Some standard content:
JB/T9608—1999
This standard is the first revision of ZBK64013—89 "Profile Cutting Machine". This standard complies with GB14870—1993 "Safety Requirements for Electric Profile Cutting Machines". This standard adds 4.7.2, 4.7.3, 5.4, 5.5, and modifies 2, 3.3.3, 8.1. This standard is prepared in accordance with GB/T1.1-1993 "Guidelines for Standardization Work Unit 1: Drafting and Expression Rules of Standards Basic Regulations for the Preparation of Standards".
This standard replaces ZBK64013—89 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Electric Tools. The drafting unit of this standard: Shanghai Electric Tool Research Institute. The main drafters of this standard: Dui Jianxin and Zheng Kaiji. Part 1: Standard
1 Scope
Machinery Industry Standard of the People's Republic of China
Profile Cutting Machine
Electric Cut-off Machines
JB/T9608-1999
Replaces ZBK64013-88
This standard specifies the basic parameters and types, technical requirements, test methods and inspection rules of profile cutting machines. This standard applies to portable electric profile cutting machines (hereinafter referred to as cutting machines) that use fiber-reinforced grinding wheels to cut round steel pipes, special-shaped steel pipes, cast iron pipes, round steel, angle steel, channel steel, flat steel and other profiles under general environmental conditions and are powered by three-phase power frequency, single-phase capacitor or single-phase series-excited (series-excited) motors to cut round steel pipes, special-shaped steel pipes, cast iron pipes, round steel, angle steel, channel steel, flat steel and other profiles (hereinafter referred to as cutting machines). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. At the time of publication of the standard, the versions shown are all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T755--1987
GB2099.1—1996
GB4343—1995
GB/T4583—1995
GB5013.4—1997
GB/T 9088--1988
GB13960-1992
GB17625.1-1998
GB17625.2-1999
JB/T4175-—1994
3 Basic parameters and types
Basic technical requirements for rotating electrical machines
Plugs and sockets for household and similar purposes
Part 1: General requirements
(eqvIEC60884:1994)
Measurement methods and allowable values of radio interference characteristics of household and similar electric and heating appliances, electric tools and similar electrical appliances (eqvC.1.SPRNO.14:1993) Engineering method for measuring noise of electric tools
Rated voltage 4 Rubber insulated flexible cables of 50/750V and below - Part 4: Flexible cords and flexible cables (idtIEC60245:1994)
Method for compiling electric tool models
Safety of portable electric tools - Part 1: General requirements (idtIEC61029-1:1990)
Limits of harmonic currents emitted by low-voltage electrical and electronic equipment (equipment input current 16A per phase) (idtIEC61000-3-2:1995)
Electromagnetic compatibility - Limits of voltage fluctuations and flickers generated in low-voltage power supply systems by equipment with rated current not exceeding 16A (idtIEC61000-3-3:1994)Fiber reinforced resin thin-blade grinding wheel
3.1 The basic parameters of the cutting machine shall comply with the provisions of Table 1. Approved by the State Bureau of Machinery Industry on August 6, 1999 178
Implementation on January 1, 2000
Rated output power
JB/T9608-1999
Table 1 Basic parameters
Rated torque
≥N·m
Maximum cutting diameter
Note: The maximum cutting diameter of the cutting machine refers to the diameter of the steel ring with a tensile strength of 390MPa (390N/mm2). 3.2 The model of the cutting machine shall comply with the provisions of GB/T9088, including The meaning is as follows: JOGOO-OO
Single-phase cutting machine
Three-phase cutting machine
Maximum outer diameter of fiber-reinforced grinding wheel, expressed in Arabic numerals Design serial number
Design unit code
Profile cutting machine (product code)
Power category code
Metal cutting category (large category code)
4 Technical requirements
4.1 General requirements
4.1.1 The cutting machine shall be manufactured according to the drawings and technical documents approved by the prescribed procedures and comply with the provisions of this standard. 4.1.2 The cutting machine shall be able to operate at rated speed under the following environmental conditions: a) The altitude shall not exceed 1000m;
b) The ambient air temperature shall not exceed 40℃ and shall not be lower than 15℃; c) The relative humidity of the air shall not exceed 90% (25℃). 4.1.3 The power supply conditions applicable to the cutting machine are as follows: a) Single-phase capacitor type and single-phase series-excited cutting machines should be able to operate at rated voltage under single-phase AC power supply with actual sine waveform and rated frequency;
b) Three-phase power frequency type cutting machines should be able to operate at rated voltage under three-phase AC power supply with actual sine waveform and actual symmetrical system and rated frequency.
4.1.4 Rated voltage and rated frequency:
a) AC rated voltage: three-phase 380V; single-phase 220, 42V. b) AC rated frequency: 50Hz.
4.2 Safety of cutting machine
4.2.1 The safety of cutting machine shall comply with the provisions of GB13960 except for the clauses supplemented and improved by this standard. 4.2.2 The surfaces of all protruding parts of the cutting machine, such as the frame, protective device, clamp, handle, etc., shall be smooth and the edges and corners shall be blunt. 179
JB/T9608—1999
4.2.3 The belt pulley, belt and other similar moving parts of the cutting machine should be equipped with a protective cover that cannot be removed by hand. 4.2.4 The cutting machine should be equipped with a grinding wheel protective cover that cannot be removed by hand. The protective cover must be made of a steel plate with a thickness of not less than 1.5mm or a material of equal strength. It is strictly forbidden to use brittle materials. After the protective cover is installed, the angle of the exposed part of the grinding wheel should not be greater than 180°. 4.2.5 The rotation direction of the cutting machine grinding wheel should be designed so that the sparks generated when the cutting machine is cutting are away from the operator. The tightening direction of the nut (or bolt) that fixes the grinding wheel should be opposite to the rotation direction of the grinding wheel. 4.2.6·The grinding wheel of the cutting machine must comply with the provisions of JB/T4175. At 1.1 times the rated voltage, the no-load speed of the cutting machine should not exceed the provisions of Table 2.
Table 2 No-load speed
Working linear speed of installed grinding wheel
Maximum no-load speed of cutting machine
The cutting machine should have a mechanism to adjust the cutting angle. This mechanism should not be loose during normal use of the tool. 4.2.7
4.2.8The power switch installed on the cutting machine should be able to completely disconnect the power supply and should be an automatic reset switch without a locking device, that is, when the operating part of the switch is released, the motor can be automatically powered off immediately. 4.2.9The plug of the cutting machine should comply with the provisions of GB2099.1. The plug of Class I cutting machines should be made into one piece with the power cord; its insulation should be able to withstand a voltage withstand test with a waveform of an actual sine wave, a frequency of 50Hz, and a voltage value of 3750V for 1min, and no breakdown or surface flashover should occur. 4.2.10·The flexible cable or cord connecting the cutting machine and the power supply shall comply with the provisions of GB5013.4, or the performance of the flexible cable or cord shall not be lower than that of GB5013.4.
4.3 Appearance quality of the cutting machine
The outer shell of the cutting machine shall not have obvious defects, and the coating shall not have delamination and peeling. The nameplate of the cutting machine shall be firmly placed on the shell without curling. 4.4 Grinding wheel clamping plate
4.4.1 There shall be two clamping plates for the grinding wheel of the cutting machine. The outer diameter D of the two clamping plates and the contact surface B between the two clamping plates and the grinding wheel shall be the same size, and the depth H of the rigid groove left between the clamping plate and the contact surface of the grinding wheel shall not be less than 1.5mm (see Figure 1). 180
JB/T9608-1999
The dimensions of the two clamping plates shall comply with the provisions of Table 3. Figure 1
Table 3 Dimensions of clamping plate
Outer diameter of clamping plate DI≥
Dimension of contact part between clamping plate and grinding wheel B≥200
4.5 Precision of cutting machine
4.5.1 The radial runout value of the cylindrical surface of the cutting machine shaft extension should not exceed 0.04mm. 4.5.2 The axial runout value of the main shaft of the cutting machine should not exceed 0.25mm. 4.5.3 The plane of the grinding wheel should be vertical, and the angle deviation should not exceed 2°. B
4.5.4 The cross section of the material being cut should be smooth and flat. There should be no obvious signs of misalignment. When the clamp fixes the jaws at 0°, the cross section of the material being cut should be perpendicular to its axis, the angle deviation should not exceed 3°, and the width of the cut should not exceed 1.5 times the thickness of the grinding wheel. 4.5.5 The fixed clamp of the cutting machine should be designed to be adjustable, and its adjustment angle range should not be less than 45°. 4.6 Noise
The average value of the no-load noise sound pressure level (A-weighted) of the cutting machine measured at the surface of the measuring egg at a distance of 1m from a minimum rectangular block surrounding the cutting machine as a reference box should not exceed the allowable value specified in Table 4. Table 4 Allowable noise value
Cutting machine specifications
Noise value
Single-phase series excited machine
Single-phase asynchronous machine
Three-phase asynchronous machine
4.7 Electromagnetic compatibility
4.7.1 Radio and television interference level
a) The continuous interference voltage level of the phase line or neutral line to the ground measured in the frequency range of 0.15~30MHz shall not exceed the allowable value specified in Table 5;
b) The continuous interference power level absorbed by the power line radiation and absorption clamp measured in the frequency range of 30~300MHz shall not exceed the allowable value specified in Table 6.
4.7.2, Harmonic current
0.15~0.35
>0.35~5.00
>5. 00~30.00
30~300
JB/T9608—1999
Table 5 Continuous interference voltage
Table 6 Continuous interference power
a) The steady-state harmonic current of the cutting machine shall not exceed the limit specified in Table 7. 66~59
Interference voltage
dB(μV)
Decreases linearly with the logarithm of frequency
Interference power
dB(PW)
Increases linearly with frequency45~55
Table 7 Steady-state harmonic current limit
Harmonic order
Maximum allowable harmonic current
Odd harmonics
Even harmonics
15≤39
8≤40
0.225×15/n
0.345×8/n
b) For 2nd to 10th even harmonics and 3rd to 19th odd harmonics, within any 2.5min observation period, the transient harmonic current value allowed not exceeding 15s is 1.5 times the steady-state harmonic current limit specified in Table 7. 4.7.3 Voltage fluctuation and flicker
When the cutting machine is connected to the low-voltage power grid, the voltage fluctuation and flicker caused by it shall meet the following requirements: P value shall not be greater than 1.0;
Pl value shall not be greater than 0.65;
Steady-state relative voltage change d. shall not exceed 3%; the maximum relative voltage change dmx shall not exceed 4%; the voltage change characteristic value d(t) shall not exceed 3% in 300ms. If the voltage change is caused by a manual switch or the occurrence rate is less than once per hour, P. and Pit. shall not be assessed. The steady-state relative voltage change d., the maximum relative voltage change dmax, and the voltage change characteristic value d(t) shall be multiplied by a coefficient of 1.33. 4.8 Commutation spark
The spark under the brush of a single-phase pulsating cutting machine at rated voltage, no load and rated load shall not exceed Level 2 specified in GB/T755. 4.9 Input power and current
4.9.1 The input power of the cutting machine at rated voltage and rated load should not exceed 120% of the input power value indicated on the nameplate. 4.9.2 If the current value is marked on the nameplate of the cutting machine, the current at rated voltage and rated load should not exceed 120% of the current value indicated on the nameplate.
4.10 Temperature rise
JB/T9608—1999
At rated load, the temperature rise of the cutting machine shall not exceed the values specified in Table 8: Table 8 Temperature rise limits
E-class insulation winding
B-class insulation winding
F-class insulation winding
Normal use non-gripped housing
Handles, buttons and similar parts that are continuously held in normal use: metal
Note: When the altitude of the test site or the place of use is different from the specified environmental conditions, the correction of the winding temperature rise limit shall be carried out in accordance with the provisions of GB/T755. 4.11 Overtorque
The cutting machine shall be able to operate normally after the overtorque test of 1.5 times the rated torque for 15s in the hot state. 4.12 Length of power cord
The length of the power cord of the cutting machine from the power cord inlet to the plug (excluding the pins) should be no less than 2.5m. 4.13 Rust prevention
The steel brush springs, screws, etc. of the cutting machine should be surface treated to prevent rust. The grounding screws and pads should be tested for rust prevention.
5 Test method
5.1 Appearance inspection
Inspect the appearance quality of the cutting machine through observation and manual test. The inspection results should comply with the provisions of 4.2.2, 4.2.3, 4.2.7, 4.2.8 and 4.3. 5.2 Noise test
The noise test of the cutting machine shall be carried out in accordance with the provisions of GB/T4583. The test results shall comply with the provisions of 4.6.
5.3 Measurement of radio and television interference level The measurement of the interference level of the cutting machine to radio and television shall be carried out in accordance with the provisions of GB4343. During measurement, the cutting machine shall be operated continuously without load with the grinding wheel. The test results shall comply with the provisions of 4.7.1.
5.4 Harmonic current measurement
The harmonic current measurement of the cutting machine shall be carried out in accordance with the provisions of GB17625.1. During measurement, the cutting machine shall be operated continuously without load with the grinding wheel. The measurement results shall comply with the provisions of 4.7.2.
5.5 Voltage fluctuation and flicker measurement
The voltage fluctuation and flicker measurement of the cutting machine shall be carried out in accordance with the provisions of GB17625.2. During measurement, the cutting machine shall be operated continuously without load with the grinding wheel. The measurement results shall comply with the provisions of 4.7.3.
5.6 Accuracy inspection
5.6.1 Inspection of radial runout of the cylindrical surface of the shaft extension The cutting machine is passed through a low voltage or other appropriate method to make the shaft extension rotate slowly for three circles, and the measurement is carried out with a dial indicator. The average value of the difference between the maximum and minimum values on the dial indicator for three times. It is the radial runout value of the cylindrical surface of the shaft extension. 183
The inspection result shall comply with the provisions of 4.5.1.
5.6.2 Inspection of axial movement of the main shaft
JB/T9608—1999
Install a test sleeve (see Figure 2) on the main shaft extension of the cutting machine, start and stop the cutting machine three times for a short time, and measure with a dial indicator. The measuring point should be located on the axis of the sleeve, and take the average value of the axial movement measured three times. The inspection result shall comply with the provisions of 4.5.2.
5.6.3 Inspection of the verticality of the chassis working surface and the fixed jaw plane of the clamp and the grinding wheel plane. When the cutting machine is in a stationary state, use a universal angle ruler to measure the verticality of the chassis working surface and the fixed jaw plane of the clamp (at 0°) and the chassis working surface and the grinding wheel plane. The measurement result shall comply with the provisions of 4.5.3.
5.6.4 Inspection of the incision width and cross-section quality of the cut material Use a cutting machine to cut a 45# round steel with the maximum cutting diameter corresponding to each specification specified in Table 1. When the round steel is cut to a depth of half its diameter, use a vernier caliper to measure the width of the incision, and then continue cutting until the round steel is completely cut off. Use a universal angle gauge to measure the verticality of the cross section to its axis. At the same time, check the cutting quality of the cross section by observation. The inspection of the nesting should comply with the provisions of 4.5.4.
5.6.5· Inspection of the clamp adjustment angle range
When the cutting machine is in a stationary state, loosen the fastening screw on the fixed clamp, turn it to the maximum angle, and use an angle gauge to measure the rotation angle of the fixed clamp.
The measurement results should comply with the provisions of 4.5.5 and 4.2.7. 5.7 Inspection of the grinding wheel clamping plate
Remove the two clamping plates of the grinding wheel and use a vernier caliper to measure the outer diameter of the clamping plate and the size of the contact surface between the clamping plate and the grinding wheel. The inspection results should comply with the provisions of 4.4
5.8 No-load speed measurement
After the cutting machine with a grinding wheel runs at no-load for 15 minutes at rated voltage, increase the voltage to 1.1 times the rated voltage and measure the no-load speed of the cutting machine.
The measurement results should comply with the provisions of Table 2.
5.9 Commutation spark inspection
The single-phase series-excited cutting machine runs at no-load for 15 minutes at rated voltage. When no-load and during test 5.11, observe the fire under the brush. During the inspection test, only the commutation spark at no-load is inspected. The inspection results should comply with the provisions of 4.8.
5.10 Input power, current and working parameter measurement Under rated voltage, the applied torque of the cutting machine reaches the minimum value of rated torque specified in Table 1. If the output power has not reached the minimum value of rated output power specified in Table 1, the load of the cutting machine shall be increased continuously to make the output power of the cutting machine reach this value (when the specified rated input power and rated torque are greater than the minimum value specified in Table 1, the specified rated output power or rated torque shall be loaded as well). After the cutting machine runs for 15 minutes, the input power, current, torque and output power of the cutting machine shall be measured. The test results shall comply with the provisions of 3.1 and 4.9. 5.11 Temperature rise test
5.11.1 Applied load:
JB/T 9608-1999
Under rated voltage, apply torque according to the load determined in 5.10. If the input power of the cutting machine is less than the rated input power indicated on the nameplate, the load shall be increased to make the input power of the cutting machine reach the rated input power indicated on the nameplate. The temperature rise test is conducted by applying the load with the torque under the input power.
5.11.2 Running time:
Continuously run under the conditions of 5.11.1 until the temperature rise of each part of the cutting machine reaches the actual stable state. After the temperature rise of each part of the cutting machine reaches the actual stable state, the temperature rise of the winding is measured by the resistance method, and the temperature rise of other parts is measured by the thermometer method. The test results shall comply with the provisions of 4.10.
5.12 Overtorque test
When the temperature rise of the cutting machine reaches the stable state, increase the torque at the rated voltage so that its output torque reaches 1.5 times the load torque measured in 5.10.
The test lasts for 15s.
The test results shall comply with the provisions of 4.11.
5.13 Inspection of protective cover
The inspection results shall comply with the provisions of 4.2.4 by observing and measuring the thickness of the protective cover and the angle of the exposed part of the grinding wheel with a vernier caliper and an angle ruler.
5.14 Voltage withstand test for Class I cutting machine plugs Attach metal foil to the knob on the outer surface of the plug body, then apply a test voltage of 3750V between the plug pins and the metal foil for 1 min.
The test results shall comply with the provisions of 4.2.9.
5.15 Power cord inspection and length measurement
Measure the length of the power cord from the power cord entry hole of the cutting machine to the plug surface (excluding the pins) and check the power cord specifications. The measurement results shall comply with the provisions of 4.12 and 4.2.10. 5.16 Rust test
Inspect the screws and steel brush springs by observation; perform a rust test on the grounding screw on a separately provided part. The test results shall comply with the provisions of 4.13.
5.17 Other test methods
5.17.1 When the cutting machine is subjected to the durability test, a simulated wheel with an outer diameter and mass similar to the original grinding wheel shall be used to replace the original grinding wheel. 5.17.2 When the single-phase series-excited cutting machine is tested for irregular belt operation, the grinding wheel should be removed. 5.17.3 The remaining test methods not specified in this standard shall be carried out in accordance with the corresponding chapters and articles of GB13960. 6 Inspection regulations
6.1 Each cutting machine must pass the test of the quality management department before it can leave the factory. When leaving the factory, it should be accompanied by documents proving the quality of the product. 6.2 The items specified in this standard are type test items, of which those marked with "*" are inspection test items. After the product is finalized, if the structure and materials have not changed, the items marked with "**" may not be carried out in the subsequent type tests. Appearance inspection*
Marking inspection**
Stability test
Electric shock protection inspection**
Noise test
Measurement of radio and television interference levels
Measurement of harmonic current
Measurement of voltage fluctuation and flicker
Starting test
Protective cover inspection**
Check of clamp adjustment angle range**
JB/T9608—1999
Check of radial runout of shaft extension cylindrical surface and axial movement of main shaftCheck of grinding wheel clamping plate**
Check of angle between chassis working surface and fixed jaw plane of clampCheck of angle between chassis working surface and grinding wheel planeMeasurement of no-load speed
Commutation spark inspection* (Only for single-phase series-excited cutting machine)Measurement of input power, current and working parametersTemperature rise test
Over-torque test
Discharge Leakage current measurement
Moisture resistance test
Insulation resistance measurement
Withstand voltage test
Durability test
Abnormal operation test
Mechanical hazard inspection**
Mechanical strength inspection
Grounding device inspection
Structural inspection*·*
Internal wiring inspection
Component test (including withstand voltage test for Class II plugs)*Power cord length inspection
Power connection inspection
Flexible cable or cord tensile test
External wire terminal inspection*Strength
Screw and connection inspection**
Inspection of creepage distance, electrical space and insulation penetration distanceHeat resistance, flame resistance and anti-scratch test**Rust resistance test
6.3 Inspection method
6.3.1 The test shall be carried out in the order of the test items listed in 6.2. 6.3.2 Except for the relevant tests that require the use of the provided parts (such as screws for rust prevention tests, etc.), the remaining test items should be carried out on the same prototype and pass all tests.
If the prototype needs to be disassembled for relevant tests, another prototype can be added. 7. Marking and packaging
7.1 Marking
7.1.1 The nameplate of the cutting machine should be marked with the following items: a) product name (profile cutting machine);
b) profile cutting machine model;
c) clamp adjustment angle (°);
d) rated voltage, V;
e) power type symbol;
JB/T9608—1999
f) rated input power, W or kW; or rated current, A;g) no-load speed, r/min,
h) Class I structure symbol (marked on Class III cutting machines);
i) moisture resistance symbol (marked only when required);
k) factory batch code.
7.1.2. The direction of rotation of the grinding wheel shall be indicated by a protruding or recessed arrow or other clear and durable means. 7.1.3 The grounding terminal of a Class I cutting machine must be marked with a symbol and shall be easily recognizable and durable. It is also not allowed to place this mark on screws, removable washers or other parts that may be removed when connecting wires. 7.2 Documents that should be attached to each cutting machine when it leaves the factory 7.2.1 Product certificate
7.2.2 Operation and maintenance instructions
The following contents should be explained in the instructions: a) Relevant description of the characteristics and uses of this model of cutting machine; b) There should be an independent chapter to explain the safety technical requirements for the use of the cutting machine and the precautions for operation and use. The content should include: The grinding wheel used should be intact and there should be no cracking sound when tapping the grinding wheel with a wooden hammer. If the used grinding wheel has been stored for more than one year, a rotation strength test should be carried out and it can only be used after passing the test. The safe working linear speed of the grinding wheel used.
Before using the cutting machine, it is necessary to confirm that the profile to be cut has been clamped in the clamp before cutting can be carried out, and the appropriate cutting feed speed should be controlled according to the different shapes, materials and diameters of the profile to be cut. When the cutting machine is in use, there should be no flammable or explosive gases and items at the operation site, and it is strictly forbidden to operate with the protective cover removed. c) Relevant maintenance matters.
7.3 The packaging, transportation and storage of the cutting machine shall comply with relevant regulations 8 Warranty period and spare parts
8.1 Warranty period
The user shall follow the provisions of the use and maintenance instructions of the cutting machine manufacturer. Under the condition of correct transportation, storage and use of the cutting machine, the warranty period of the cutting machine is stipulated by the manufacturer. If the cutting machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge.
8.2 Accessories
When the cutting machine leaves the factory, it should be accompanied by special tools for disassembling and installing the grinding wheel and a spare fiber-reinforced grinding wheel. The single-series excitation cutting machine should also be accompanied by a spare brush.10. If the input power of the cutting machine is less than the rated input power indicated on the nameplate, increase the load so that the input power of the cutting machine reaches the rated input power indicated on the nameplate. Apply the load with the torque under the input power to conduct the temperature rise test.
5.11.2 Running time:
Continuously run under the conditions of 5.11.1 until the temperature rise of each part of the cutting machine reaches the actual stable state. After the temperature rise of each part of the cutting machine reaches the actual stable state, the temperature rise of the winding is measured by the resistance method, and the temperature rise of other parts is measured by the thermometer method. The test results shall comply with the provisions of 4.10.
5.12 Over-torque test
When the temperature rise of the cutting machine reaches the stable state, increase the torque at the rated voltage so that its output torque reaches 1.5 times the load torque measured in 5.10.
The test lasts for 15s.
The test results shall comply with the provisions of 4.11.
5.13 Inspection of protective cover
Measure the thickness of the protective cover and the angle of the exposed part of the grinding wheel by observation and by using a vernier caliper and an angle ruler. The inspection results shall comply with the provisions of 4.2.4.
5.14 Voltage withstand test of plug of Class I cutting machine. Attach metal foil to the knob on the outer surface of the plug. Then apply a test voltage of 3750V between the plug pin and the metal foil for 1 min.
The test results shall comply with the provisions of 4.2.9.
5.15 Inspection and length measurement of power cord
Measure the length of the power cord from the power cord inlet of the cutting machine to the plug (excluding the pins) and check the specifications of the power cord. The measurement results shall comply with the provisions of 4.12 and 4.2.10. 5.16 Rust test
Inspect the screws and steel brush springs by observation; perform a rust test on the grounding screw on a separately provided part. The test results shall comply with the provisions of 4.13.
5.17 Other test methods
5.17.1 When the cutting machine is subjected to durability test, a simulated wheel with an outer diameter and mass similar to the original grinding wheel shall be used to replace the original grinding wheel. 5.17.2 When the single-phase series-excited cutting machine is subjected to the non-normal belt operation test, the grinding wheel shall be removed. 5.17.3 Other test methods not specified in this standard shall be carried out in accordance with the corresponding chapters and articles of GB13960. 6 Inspection regulations
6.1 Each cutting machine must pass the test of the quality management department before it can leave the factory. When leaving the factory, it shall be accompanied by documents proving the quality of the product. 6.2 The items specified in this standard are type test items, among which those marked with "*" are inspection test items. After the product is finalized, if the structure and materials have not changed, the items marked with "**" may not be carried out in the subsequent type test. Appearance inspection*
Marking inspection**
Stability test
Electric shock protection inspection**
Noise test
Measurement of radio and television interference levels
Measurement of harmonic current
Measurement of voltage fluctuation and flicker
Starting test
Protective cover inspection**
Check of clamp adjustment angle range**
JB/T9608—1999
Check of radial runout of shaft extension cylindrical surface and axial movement of main shaftCheck of grinding wheel clamping plate**
Check of angle between chassis working surface and fixed jaw plane of clampCheck of angle between chassis working surface and grinding wheel planeMeasurement of no-load speed
Commutation spark inspection* (Only for single-phase series-excited cutting machine)Measurement of input power, current and working parametersTemperature rise test
Over-torque test
Discharge Leakage current measurement
Moisture resistance test
Insulation resistance measurement
Withstand voltage test
Durability test
Abnormal operation test
Mechanical hazard inspection**
Mechanical strength inspection
Grounding device inspection
Structural inspection*·*
Internal wiring inspection
Component test (including withstand voltage test for Class II plugs)*Power cord length inspection
Power connection inspection
Flexible cable or cord tensile test
External wire terminal inspection*Strength
Screw and connection inspection**
Inspection of creepage distance, electrical space and insulation penetration distanceHeat resistance, flame resistance and anti-scratch test**Rust resistance test
6.3 Inspection method
6.3.1 The test shall be carried out in the order of the test items listed in 6.2. 6.3.2 Except for the relevant tests that require the use of the provided parts (such as screws for rust prevention tests, etc.), the remaining test items should be carried out on the same prototype and pass all tests.
If the prototype needs to be disassembled for relevant tests, another prototype can be added. 7. Marking and packaging
7.1 Marking
7.1.1 The nameplate of the cutting machine should be marked with the following items: a) product name (profile cutting machine);
b) profile cutting machine model;
c) clamp adjustment angle (°);
d) rated voltage, V;
e) power type symbol;
JB/T9608—1999
f) rated input power, W or kW; or rated current, A;g) no-load speed, r/min,
h) Class I structure symbol (marked on Class III cutting machines);
i) moisture resistance symbol (marked only when required);
k) factory batch code.
7.1.2. The direction of rotation of the grinding wheel shall be indicated by a protruding or recessed arrow or other clear and durable means. 7.1.3 The grounding terminal of a Class I cutting machine must be marked with a symbol and shall be easily recognizable and durable. It is also not allowed to place this mark on screws, removable washers or other parts that may be removed when connecting wires. 7.2 Documents that should be attached to each cutting machine when it leaves the factory 7.2.1 Product certificate
7.2.2 Operation and maintenance instructions
The following contents should be explained in the instructions: a) Relevant description of the characteristics and uses of this model of cutting machine; b) There should be an independent chapter to explain the safety technical requirements for the use of the cutting machine and the precautions for operation and use. The content should include: The grinding wheel used should be intact and there should be no cracking sound when tapping the grinding wheel with a wooden hammer. If the used grinding wheel has been stored for more than one year, a rotation strength test should be carried out and it can only be used after passing the test. The safe working linear speed of the grinding wheel used.
Before using the cutting machine, it is necessary to confirm that the profile to be cut has been clamped in the clamp before cutting can be carried out, and the appropriate cutting feed speed should be controlled according to the different shapes, materials and diameters of the profile to be cut. When the cutting machine is in use, there should be no flammable or explosive gases and items at the operation site, and it is strictly forbidden to operate with the protective cover removed. c) Relevant maintenance matters.
7.3 The packaging, transportation and storage of the cutting machine shall comply with relevant regulations 8 Warranty period and spare parts
8.1 Warranty period
The user shall follow the provisions of the use and maintenance instructions of the cutting machine manufacturer. Under the condition of correct transportation, storage and use of the cutting machine, the warranty period of the cutting machine is stipulated by the manufacturer. If the cutting machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge.
8.2 Accessories
When the cutting machine leaves the factory, it should be accompanied by special tools for disassembling and installing the grinding wheel and a spare fiber-reinforced grinding wheel. The single-series excitation cutting machine should also be accompanied by a spare brush.10. If the input power of the cutting machine is less than the rated input power indicated on the nameplate, increase the load so that the input power of the cutting machine reaches the rated input power indicated on the nameplate. Apply the load with the torque under the input power to conduct the temperature rise test.
5.11.2 Running time:
Continuously run under the conditions of 5.11.1 until the temperature rise of each part of the cutting machine reaches the actual stable state. After the temperature rise of each part of the cutting machine reaches the actual stable state, the temperature rise of the winding is measured by the resistance method, and the temperature rise of other parts is measured by the thermometer method. The test results shall comply with the provisions of 4.10.
5.12 Over-torque test
When the temperature rise of the cutting machine reaches the stable state, increase the torque at the rated voltage so that its output torque reaches 1.5 times the load torque measured in 5.10.
The test lasts for 15s.
The test results shall comply with the provisions of 4.11.
5.13 Inspection of protective cover
Measure the thickness of the protective cover and the angle of the exposed part of the grinding wheel by observation and by using a vernier caliper and an angle ruler. The inspection results shall comply with the provisions of 4.2.4.
5.14 Voltage withstand test of plug of Class I cutting machine. Attach metal foil to the knob on the outer surface of the plug. Then apply a test voltage of 3750V between the plug pin and the metal foil for 1 min.
The test results shall comply with the provisions of 4.2.9.
5.15 Inspection and length measurement of power cord
Measure the length of the power cord from the power cord inlet of the cutting machine to the plug (excluding the pins) and check the specifications of the power cord. The measurement results shall comply with the provisions of 4.12 and 4.2.10. 5.16 Rust test
Inspect the screws and steel brush springs by observation; perform a rust test on the grounding screw on a separately provided part. The test results shall comply with the provisions of 4.13.
5.17 Other test methods
5.17.1 When the cutting machine is subjected to durability test, a simulated wheel with an outer diameter and mass similar to the original grinding wheel shall be used to replace the original grinding wheel. 5.17.2 When the single-phase series-excited cutting machine is subjected to the non-normal belt operation test, the grinding wheel shall be removed. 5.17.3 Other test methods not specified in this standard shall be carried out in accordance with the corresponding chapters and articles of GB13960. 6 Inspection regulations
6.1 Each cutting machine must pass the test of the quality management department before it can leave the factory. When leaving the factory, it shall be accompanied by documents proving the quality of the product. 6.2 The items specified in this standard are type test items, among which those marked with "*" are inspection test items. After the product is finalized, if the structure and materials have not changed, the items marked with "**" may not be carried out in the subsequent type test. Appearance inspection*
Marking inspection**
Stability test
Electric shock protection inspection**
Noise test
Measurement of radio and television interference levels
Measurement of harmonic current
Measurement of voltage fluctuation and flicker
Starting test
Protective cover inspection**
Check of clamp adjustment angle range**
JB/T9608—1999
Check of radial runout of shaft extension cylindrical surface and axial movement of main shaftCheck of grinding wheel clamping plate**
Check of angle between chassis working surface and fixed jaw plane of clampCheck of angle between chassis working surface and grinding wheel planeMeasurement of no-load speed
Commutation spark inspection* (Only for single-phase series-excited cutting machine)Measurement of input power, current and working parametersTemperature rise test
Over-torque test
Discharge Leakage current measurement
Moisture resistance test
Insulation resistance measurement
Withstand voltage test
Durability test
Abnormal operation test
Mechanical hazard inspection**
Mechanical strength inspection
Grounding device inspection
Structural inspection*·*
Internal wiring inspection
Component test (including withstand voltage test for Class II plugs)*Power cord length inspection
Power connection inspection
Flexible cable or cord tensile test
External wire terminal inspection*Strength
Screw and connection inspection**
Inspection of creepage distance, electrical space and insulation penetration distanceHeat resistance, flame resistance and anti-scratch test**Rust resistance test
6.3 Inspection method
6.3.1 The test shall be carried out in the order of the test items listed in 6.2. 6.3.2 Except for the relevant tests that require the use of the provided parts (such as screws for rust prevention tests, etc.), the remaining test items should be carried out on the same prototype and pass all tests.
If the prototype needs to be disassembled for relevant tests, another prototype can be added. 7. Marking and packaging
7.1 Marking
7.1.1 The nameplate of the cutting machine should be marked with the following items: a) product name (profile cutting machine);
b) profile cutting machine model;
c) clamp adjustment angle (°);
d) rated voltage, V;
e) power type symbol;
JB/T9608—1999
f) rated input power, W or kW; or rated current, A;g) no-load speed, r/min,
h) Class I structure symbol (marked on Class III cutting machines);
i) moisture resistance symbol (marked only when required);
k) factory batch code.
7.1.2. The direction of rotation of the grinding wheel shall be indicated by a protruding or recessed arrow or other clear and durable means. 7.1.3 The grounding terminal of a Class I cutting machine must be marked with a symbol and shall be easily recognizable and durable. It is also not allowed to place this mark on screws, removable washers or other parts that may be removed when connecting wires. 7.2 Documents that should be attached to each cutting machine when it leaves the factory 7.2.1 Product certificate
7.2.2 Operation and maintenance instructions
The following contents should be explained in the instructions: a) Relevant description of the characteristics and uses of this model of cutting machine; b) There should be an independent chapter to explain the safety technical requirements for the use of the cutting machine and the precautions for operation and use. The content should include: The grinding wheel used should be intact and there should be no cracking sound when tapping the grinding wheel with a wooden hammer. If the used grinding wheel has been stored for more than one year, a rotation strength test should be carried out and it can only be used after passing the test. The safe working linear speed of the grinding wheel used.
Before using the cutting machine, it is necessary to confirm that the profile to be cut has been clamped in the clamp before cutting can be carried out, and the appropriate cutting feed speed should be controlled according to the different shapes, materials and diameters of the profile to be cut. When the cutting machine is in use, there should be no flammable or explosive gases and items at the operation site, and it is strictly forbidden to operate with the protective cover removed. c) Relevant maintenance matters.
7.3 The packaging, transportation and storage of the cutting machine shall comply with relevant regulations 8 Warranty period and spare parts
8.1 Warranty period
The user shall follow the provisions of the use and maintenance instructions of the cutting machine manufacturer. Under the condition of correct transportation, storage and use of the cutting machine, the warranty period of the cutting machine is stipulated by the manufacturer. If the cutting machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge.
8.2 Accessories
When the cutting machine leaves the factory, it should be accompanied by special tools for disassembling and installing the grinding wheel and a spare fiber-reinforced grinding wheel. The single-series excitation cutting machine should also be accompanied by a spare brush.15 Power cord inspection and length measurement
Measure the length of the power cord from the power cord inlet of the cutting machine to the plug (excluding the pins) and check the power cord specifications. The measurement results should comply with the provisions of 4.12 and 4.2.10. 5.16 Anti-rust test
Inspect the screws and steel brush springs by observation; perform an anti-rust test on the grounding screws on the separately provided parts. The test results should comply with the provisions of 4.13.
5.17 Other test methods
5.17.1 When the cutting machine is subjected to the durability test, a simulated wheel with an outer diameter and mass similar to the original grinding wheel should be used to replace the original grinding wheel. 5.17.2 When the single-phase series-excited cutting machine is subjected to the non-aligned belt operation test, the grinding wheel should be removed. 5.17.3 Other test methods not specified in this standard shall be carried out in accordance with the corresponding chapters and clauses of GB13960. 6 Inspection regulations
6.1 Each cutting machine must be tested and qualified by the quality management department before it can leave the factory. Documents proving the quality of the product should be attached when leaving the factory. 6.2 The items specified in this standard are type test items, among which those marked with "*" are inspection test items. After the product is finalized, if the structure and materials have not changed, the items marked with "**" may not be carried out in the subsequent type test. Appearance inspection*
Marking inspection**
Stability test
Electric shock protection inspection**
Noise test
Measurement of radio and television interference levels
Measurement of harmonic current
Measurement of voltage fluctuation and flicker
Starting test
Protective cover inspection**
Check of clamp adjustment angle range**
JB/T9608—1999
Check of radial runout of shaft extension cylindrical surface and axial movement of main shaftCheck of grinding wheel clamping plate**
Check of angle between chassis working surface and fixed jaw plane of clampCheck of angle between chassis working surface and grinding wheel planeMeasurement of no-load speed
Commutation spark inspection* (Only for single-phase series-excited cutting machine)Measurement of input power, current and working parametersTemperature rise test
Over-torque test
Discharge Leakage current measurement
Moisture resistance test
Insulation resistance measurement
Withstand voltage test
Durability test
Abnormal operation test
Mechanical hazard inspection**
Mechanical strength inspection
Grounding device inspection
Structural inspection*·*
Internal wiring inspection
Component test (including withstand voltage test for Class II plugs)*Power cord length inspection
Power connection inspection
Flexible cable or cord tensile test
External wire terminal inspection*Strength
Screw and connection inspection**
Inspection of creepage distance, electrical space and insulation penetration distanceHeat resistance, flame resistance and anti-scratch test**Rust resistance test
6.3 Inspection method
6.3.1 The test shall be carried out in the order of the test items listed in 6.2. 6.3.2 Except for the relevant tests that require the use of the provided parts (such as screws for rust prevention tests, etc.), the remaining test items should be carried out on the same prototype and pass all tests.
If the prototype needs to be disassembled for relevant tests, another prototype can be added. 7. Marking and packaging
7.1 Marking
7.1.1 The nameplate of the cutting machine should be marked with the following items: a) product name (profile cutting machine);
b) profile cutting machine model;
c) clamp adjustment angle (°);
d) rated voltage, V;
e) power type symbol;
JB/T9608—1999
f) rated input power, W or kW; or rated current, A;g) no-load speed, r/min,
h) Class I structure symbol (marked on Class III cutting machines);
i) moisture resistance symbol (marked only when required);
k) factory batch code.
7.1.2. The direction of rotation of the grinding wheel shall be indicated by a protruding or recessed arrow or other clear and durable means. 7.1.3 The grounding terminal of a Class I cutting machine must be marked with a symbol and shall be easily recognizable and durable. It is also not allowed to place this mark on screws, removable washers or other parts that may be removed when connecting wires. 7.2 Documents that should be attached to each cutting machine when it leaves the factory 7.2.1 Product certificate
7.2.2 Operation and maintenance instructions
The following contents should be explained in the instructions: a) Relevant description of the characteristics and uses of this model of cutting machine; b) There should be an independent chapter to explain the safety technical requirements for the use of the cutting machine and the precautions for operation and use. The content should include: The grinding wheel used should be intact and there should be no cracking sound when tapping the grinding wheel with a wooden hammer. If the used grinding wheel has been stored for more than one year, a rotation strength test should be carried out and it can only be used after passing the test. The safe working linear speed of the grinding wheel used.
Before using the cutting machine, it is necessary to confirm that the profile to be cut has been clamped in the clamp before cutting can be carried out, and the appropriate cutting feed speed should be controlled according to the different shapes, materials and diameters of the profile to be cut. When the cutting machine is in use, there should be no flammable or explosive gases and items at the operation site, and it is strictly forbidden to operate with the protective cover removed. c) Relevant maintenance matters.
7.3 The packaging, transportation and storage of the cutting machine shall comply with relevant regulations 8 Warranty period and spare parts
8.1 Warranty period
The user shall follow the provisions of the use and maintenance instructions of the cutting machine manufacturer. Under the condition of correct transportation, storage and use of the cutting machine, the warranty period of the cutting machine is stipulated by the manufacturer. If the cutting machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge.
8.2 Accessories
When the cutting machine leaves the factory, it should be accompanied by special tools for disassembling and installing the grinding wheel and a spare fiber-reinforced grinding wheel. The single-series excitation cutting machine should also be accompanied by a spare brush.15 Power cord inspection and length measurement
Measure the length of the power cord from the power cord inlet of the cutting machine to the plug (excluding the pins) and check the power cord specifications. The measurement results should comply with the provisions of 4.12 and 4.2.10. 5.16 Anti-rust test
Inspect the screws and steel brush springs by observation; perform an anti-rust test on the grounding screws on the separately provided parts. The test results should comply with the provisions of 4.13.
5.17 Other test methods
5.17.1 When the cutting machine is subjected to the durability test, a simulated wheel with an outer diameter and mass similar to the original grinding wheel should be used to replace the original grinding wheel. 5.17.2 When the single-phase series-excited cutting machine is subjected to the non-aligned belt operation test, the grinding wheel should be removed. 5.17.3 Other test methods not specified in this standard shall be carried out in accordance with the corresponding chapters and clauses of GB13960. 6 Inspection regulations
6.1 Each cutting machine must be tested and qualified by the quality management department before it can leave the factory. Documents proving the quality of the product should be attached when leaving the factory. 6.2 The items specified in this standard are type test items, among which those marked with "*" are inspection test items. After the product is finalized, if the structure and materials have not changed, the items marked with "**" may not be carried out in the subsequent type test. Appearance inspection*
Marking inspection**
Stability test
Electric shock protection inspection**
Noise test
Measurement of radio and television interference levels
Measurement of harmonic current
Measurement of voltage fluctuation and flicker
Starting test
Protective cover inspection**
Check of clamp adjustment angle range**
JB/T9608—1999
Check of radial runout of shaft extension cylindrical surface and axial movement of main shaftCheck of grinding wheel clamping plate**
Check of angle between chassis working surface and fixed jaw plane of clampCheck of angle between chassis working surface and grinding wheel planeMeasurement of no-load speed
Commutation spark inspection* (Only for single-phase series-excited cutting machine)Measurement of input power, current and working parametersTemperature rise test
Over-torque test
Discharge Leakage current measurement
Moisture resistance test
Insulation resistance measurement
Withstand voltage test
Durability test
Abnormal operation test
Mechanical hazard inspection**
Mechanical strength inspection
Grounding device inspection
Structural inspection*·*
Internal wiring inspection
Component test (including withstand voltage test for Class II plugs)*Power cord length inspection
Power connection inspection
Flexible cable or cord tensile test
External wire terminal inspection*Strength
Screw and connection inspection**
Inspection of creepage distance, electrical space and insulation penetration distanceHeat resistance, flame resistance and anti-scratch test**Rust resistance test
6.3 Inspection method
6.3.1 The test shall be carried out in the order of the test items listed in 6.2. 6.3.2 Except for the relevant tests that require the use of the provided parts (such as screws for rust prevention tests, etc.), the remaining test items should be carried out on the same prototype and pass all tests.
If the prototype needs to be disassembled for relevant tests, another prototype can be added. 7. Marking and packaging
7.1 Marking
7.1.1 The nameplate of the cutting machine should be marked with the following items: a) product name (profile cutting machine);
b) profile cutting machine model;
c) clamp adjustment angle (°);
d) rated voltage, V;
e) power type symbol;
JB/T9608—1999
f) rated input power, W or kW; or rated current, A;g) no-load speed, r/min,
h) Class I structure symbol (marked on Class III cutting machines);
i) moisture resistance symbol (marked only when required);
k) factory batch code.
7.1.2. The direction of rotation of the grinding wheel shall be indicated by a protruding or recessed arrow or other clear and durable means. 7.1.3 The grounding terminal of a Class I cutting machine must be marked with a symbol and shall be easily recognizable and durable. It is also not allowed to place this mark on screws, removable washers or other parts that may be removed when connecting wires. 7.2 Documents that should be attached to each cutting machine when it leaves the factory 7.2.1 Product certificate
7.2.2 Operation and maintenance instructions
The following contents should be explained in the instructions: a) Relevant description of the characteristics and uses of this model of cutting machine; b) There should be an independent chapter to explain the safety technical requirements for the use of the cutting machine and the precautions for operation and use. The content should include: The grinding wheel used should be intact and there should be no cracking sound when tapping the grinding wheel with a wooden hammer. If the used grinding wheel has been stored for more than one year, a rotation strength test should be carried out and it can only be used after passing the test. The safe working linear speed of the grinding wheel used.
Before using the cutting machine, it is necessary to confirm that the profile to be cut has been clamped in the clamp before cutting can be carried out, and the appropriate cutting feed speed should be controlled according to the different shapes, materials and diameters of the profile to be cut. When the cutting machine is in use, there should be no flammable or explosive gases and items at the operation site, and it is strictly forbidden to operate with the protective cover removed. c) Relevant maintenance matters.
7.3 The packaging, transportation and storage of the cutting machine shall comply with relevant regulations 8 Warranty period and spare parts
8.1 Warranty period
The user shall follow the provisions of the use and maintenance instructions of the cutting machine manufacturer. Under the condition of correct transportation, storage and use of the cutting machine, the warranty period of the cutting machine is stipulated by the manufacturer. If the cutting machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge.
8.2 Accessories
When the cutting machine leaves the factory, it should be accompanied by special tools for disassembling and installing the grinding wheel and a spare fiber-reinforced grinding wheel. The single-series excitation cutting machine should also be accompanied by a spare brush.3 Inspection method
6.3.1 The test shall be carried out in the order of the test items listed in 6.2. 6.3.2 Except for the relevant tests that require the use of the provided parts (such as screws for rust prevention tests, etc.), the remaining test items shall be carried out on the same prototype and pass all tests.
If it is necessary to disassemble the prototype for the relevant tests, another prototype may be added. 7. Marking and packaging
7.1 Marking
7.1.1 The nameplate of the cutting machine should be marked with the following items: a) product name (profile cutting machine);
b) profile cutting machine model;
c) clamp adjustment angle (°);
d) rated voltage, V;
e) power type symbol;
JB/T9608—1999
f) rated input power, W or kW; or rated current, A;g) no-load speed, r/min,
h) Class I structure symbol (marked on Class III cutting machines);
i) moisture resistance symbol (marked only when required);
k) factory batch code.
7.1.2. The direction of rotation of the grinding wheel shall be indicated by a protruding or recessed arrow or other clear and durable means. 7.1.3 The grounding terminal of a Class I cutting machine must be marked with a symbol and shall be easily recognizable and durable. It is also not allowed to place this mark on screws, removable washers or other parts that may be removed when connecting wires. 7.2 Documents that should be attached to each cutting machine when it leaves the factory 7.2.1 Product certificate
7.2.2 Operation and maintenance instructions
The following contents should be explained in the instructions: a) Relevant description of the characteristics and uses of this model of cutting machine; b) There should be an independent chapter to explain the safety technical requirements for the use of the cutting machine and the precautions for operation and use. The content should include: The grinding wheel used should be intact and there should be no cracking sound when tapping the grinding wheel with a wooden hammer. If the used grinding wheel has been stored for more than one year, a rotation strength test should be carried out and it can only be used after passing the test. The safe working linear speed of the grinding wheel used.
Before using the cutting machine, it is necessary to confirm that the profile to be cut has been clamped in the clamp before cutting can be carried out, and the appropriate cutting feed speed should be controlled according to the different shapes, materials and diameters of the profile to be cut. When the cutting machine is in use, there should be no flammable or explosive gases and items at the operation site, and it is strictly forbidden to operate with the protective cover removed. c) Relevant maintenance matters.
7.3 The packaging, transportation and storage of the cutting machine shall comply with relevant regulations 8 Warranty period and spare parts
8.1 Warranty period
The user shall follow the provisions of the use and maintenance instructions of the cutting machine manufacturer. Under the condition of correct transportation, storage and use of the cutting machine, the warranty period of the cutting machine is stipulated by the manufacturer. If the cutting machine is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace it for the user free of charge.
8.2 Accessories
When the cutting machine leaves the factory, it should be accompanied by special tools for disassembling and installing the grinding wheel and a spare fiber-reinforced grinding wheel. The single-series excitation cutting machine should also be accompanied by a spare brush.3 Inspection method
6.3.1 The test shall be carried out in the order of the test items listed in 6.2. 6.3.2 Except for the relevant tests that require the use of the provided parts (such as screws for rust prevention tests, etc.), the remaining test items shall be carried out on the same prototype and pass all tests.
If it is necessary to disassemble the prototype for the relevant tests, another prototype may be added. 7. Marking and packaging
7.1 Marking
7.1.1 The nameplate of the cutting machine should be marked with the following items: a) product name (profile cutting machine);
b) profile cutting machine model;Www.bzxZ.net
c) clamp adjustment angle (°);
d) rated voltage, V;
e) power ty
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