JB/T 9905.2-1999 This standard is a revision of ZB J55 011-87 "Technical requirements for manufacturing and acceptance of centerless cylindrical grinders". This standard specifies and supplements GB/T 9061-1988 "General technical conditions for metal cutting machine tools". This standard is part of the JB/T 9905 "Centerless cylindrical grinder" series of standards: JB/T 9905.1-1999 Centerless cylindrical grinder series JB/T 9905.2-1999 Technical conditions for centerless cylindrical grinders Standards supporting this standard: GB/T 4681-1984 Centerless grinder accuracy GB/T 6470-1986 Centerless grinder parameters JB/T 9919-1999 High-precision centerless grinder accuracy inspection This standard specifies the requirements for manufacturing and acceptance of centerless cylindrical grinders. This standard is applicable to general-purpose centerless cylindrical grinding machines with a maximum grinding diameter of 20-400mm and a grinding wheel width of 100-600mm. This standard was first issued in July 1981 and revised for the first time in May 1987. JB/T 9905.2-1999 Technical requirements for centerless cylindrical grinding machines JB/T9905.2-1999 Standard download decompression password: www.bzxz.net

IC.S 25.480.50
Machinery Industry Standard of the People's Republic of China
JB9905.[99(5.2-1999
Centerless Cylindrical Grinding MachinebZxz.net
Published on 1999-05-20
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T9905.2-1999
This standard is in 7.8[501 1-87 Centerless Grinding Machine Manufacturing and Inspection Technical Requirements 3, this standard is a specific design and supplement of (R7901-1R concept brush machine general technical conditions and other standards. This standard is consistent with 2D [1B's technical specifications, and is compiled and updated according to the relevant standards. This standard is part of the J9905 Centerless Grinding Machine 3 series of standards: This series of standards includes the following two parts: /T9905. Small-1999 centerless grinding machine series JB/ T9905.2-999 Centerless external grinding machine installation conditions and this standard will be used in conjunction with the following standards: GB/T2681-1984 Grinding machine parameters GB/T147-186 Centerless external grinding machine parameters BH-995 High-grade centerless external grinding machine accuracy inspection This standard is implemented in place of JS511-87. The National Metal Cutting Machine Standardization Technical Committee proposed this standard. This standard is used in conjunction with the National Metal Cutting Machine Standardization Technical Committee. The grinding machine branch of the Technical Committee for Standardization of Cutting Machine Tools is hereby established. This standard is funded by: No internal network. Research point: This standard has ten 1: First published in 7F with JR280-81: First revised in May 187, this is the second subscription 1 Scope
Machinery Industry Standard of the People's Republic of China
Centerless External Cylindrical Milling Machine
Technical Conditions
This standard defines the requirements for the manufacture and acceptance of centerless external cylindrical milling machines: JE/T 9905.2—1999
This standard is suitable for general use of grinding diameter 20~400mm, grinding wheel flow 100~600mm, general grade and internal structure without external increase.
2 Referenced standards
The following standards contain the following provisions: The provisions of this standard shall prevail when the standard is published. At the time of publication of this standard, the versions shown are valid. All standards will be subject to revision. All parties using this standard should discuss the possibility of using the following standards to promote new versions. G1031:1995
GT 4681981
GD/T 5226.1: 1996 | tt||JB/T9919—1999
.FR/T 9924—1999
JR/T 10051—1999
3-Extreme requirements
Main parameters and their values ​​in the table
Especially grinding machine accuracy
Industrial batch electrical equipment Part 1: General technical conditions Technical conditions for the use of grinding machines
General technical conditions for the full protection of the machine tool against the wheel belt safety protection load requirements
General technical conditions for the replacement of one piece of cutting machine tools General technical conditions for the assembly of cutting machine tools Determination of the cleanliness of the cutting machine bed
Positive precision centerless foreign separation belt degree test
Dense surface waviness
General technical conditions for cutting test bed liquid music system Requirements When accepting machine tools according to this standard, GB906 must be met at the same time! The remaining acceptance items that have not been standardized by this standard and other standards such as JB/9972 and T9874 shall be inspected on a daily basis.
4 Accessories and tools
The accessories and 1 information listed in Table 1 shall be provided randomly: Name
Diagnosis and installation
Sand snake "center rail"
Fine grinding wheel shaft
Through: Machine to quickly use the accessories, the production of the required degree of investment and financing Approved by the State Bureau of Machinery Industry on May 20, 1999, the retarders shall be designed according to the provisions of lubrication oil cleaning and slurry separation. Implementation on January 1, 2000. Safety and Health JB/1:9905.2-1999 5.1 The fixed and moving system of the micro-wheel three-axis shall be equipped with an interlocking expansion device. 5.2 The expansion cover of the second wheel shall be in accordance with JR 4/29 regulations 5.3 The electrical and hydraulic systems shall comply with the provisions of GB/T5226.1 and JE/T10051 respectively. 5.4 The machine tool safety protection shall also comply with the provisions of GB[3760 and other relevant standards. The quality of stone processing and auxiliary accessories
(.1 The axial moving guide pair of the grinding wheel dresser of the machine tool shall adopt time grinding measures. 6.2 The spare parts are important parts of the machine tool and should be aged in the T.1 room; a) CNC machine:
h) Wheel frame (optical body!:
c) Rotating body:
di support pressure
6.3 The joints and surfaces of the main guide rails of the machine tool and the corresponding accessories, the sports model of the dresser and the accessories shall be assessed according to the requirements of static pressure, sliding (rolling)
6.4 The soft parts of the soft transmission system! The soft parts should be tested in the production operation side. 6.5 The contact index between the lifting wheel clamp shaft and the inner misalignment elimination shaft is not less than B0%, and for high-precision machine tools it is not less than 85%. H should be close to the large end 6. The following joint surfaces meet the requirements of "Type Inspection Must be Fixed Joint Surface": The joint surface of the lower plane of the bracket and its machine accessories: b) The joint surface of the guide wheel dresser seat and the swivel (or guide wheel body): ) The joint surface of the double support support:
) The joint surface of the swivel and the fixed body:
The joint surface of the swivel plate and the bed or the joint surface of the fixed body and the drag plate: 0 The joint surface of the grinding wheel lifting shell and the bed
6.? The handwheel and handle operating force assessment shall be based on the following criteria: the feed handwheel shall be assessed according to the requirements of the "frequently used" handwheel; h) The adjustment handwheel shall be assessed according to the requirements of the "infrequently used" handwheel, 6. The reverse density of the hand should not be too light. Table 2 Specifications Table 2
Precision level
Machine weight [
Consultation
Note: Others have the correct size of the wheel, fertilizer, the amount of adjustment required for the mountain age. T/20
b.9 Grinding wheel three-axis transmission or electric optimization should be made with the same pulley variable coupling for dynamic balance and calibration. After calibration, the remaining balance value caused by the vibration shall not exceed the following table 3 Regulations:
Precision level
General certification
High precision
B/T.9905.2—1999
Machine inflammation
Double-distribution operation
6.10 According to the visual inspection of JB0837, the internal cleanliness of the sub-wheel parts shall be inspected according to the weight, and the energy quality and dirt shall not exceed 200mg
? Machine tool idle running test
7.! Previous appraisal
a) The machine is mainly used to give the pressure guide load. The floating of the pressure guide is measured at the predetermined point. It should be less than 0.015mm, and the difference between the four corners should be less than or equal to 0.05mm. The test is repeated for 5 times. After the static bed is established, it should be able to drag the load. The dynamic force should meet the requirements of Table 1. The test method is: install a dynamometer (or spring) at the end of the load, and move the load on the grinding wheel shaft of the machine tool in a plane parallel to the negative motion. After the static bed is established, turn the shaft by hand. The oil chamber pressure is less than or equal to m when idling. The full film feedback current of the bearing should meet the requirements of the table. 2 Machine tool temperature rise test The machine idle method shall not be less than 4, and the guide wheel and spindle shall be operated at low, high and low speeds. The operating time of each speed shall not be less than 2min, the whole set rotation time shall not be less than 30mm, then the pressure design of the maximum working speed of the operation, so that the desired temperature is reached, the belt near the shaft and filter oil pool out of the batch humidity and humidity, should not exceed the specified, the sand wheel motor running power type Jun
This selection of assembly quality see the best 10 head: the no-load consumption rate, take the average estimate as the index, the no-load running time should not exceed the index + 15%,
.4 ten feed rate inspection
Main feed rate 10 times of feed error shall not exceed the provisions of Table 6 Test item II
Each feed
10 times of feed
Error according to formula [1 with formula (2 calculation
TRT9905.2—1999
Transducer cleaning structure
Moving potential position
Each feeding error if-0-h
10 drink into the cabin cumulative course difference
Where: "The original feeding position of the second time,
5 generally small feed, mm.
1.5 Pregnant wheel dresser low speed steady semi-steady test x1%
Ordinary picking machine tool, the dynamic seat of the pregnant wheel dresser can be less than ten or equal to ±0.03m /min, no operation. For machine tools with a misalignment, when the speed of the whole wheel is less than or equal to .Mmmi, the following inspection methods should be carried out:
Inspect with 100% weight within the full width of the wheel or guide: The index should be evenly connected and the amplitude should be 8: Machine tool load test
The machine tool does not perform the test of the maximum torque and the maximum main component force of the main transmission system, only the large power test of the wheel motor is performed, and the wear test (drag check) is performed. , high-precision visual inspection machines do not carry this test, reading gold standard period
2) 1 piece is a large-size test piece for machine tools:
b) 1 piece longitudinal feed speed is as specified in design 1
) Feed single mother 0.10mm, gradually increase until the motor reaches the design specified source speed 9 Machine tool accuracy inspection
9.1 Ordinary grade precision machine tools: Orange speed inspection according to GB/T468] 9.2 High-precision machine tools, continuous speed inspection 9.3 Geometric accuracy (1, G3 and T operation accuracy P) of H1 should be reversed after the machine tool is sent to the stable group. 9.4 Component surface composition should be in accordance with the provisions of 6B/1031: General precision machine, R, not more than T.32μm: High precision machine R value is not more than 0.16μm 9.5: Auto parts surface waviness should be in accordance with the provisions of 6B/1031: General precision machine, H is 16-2.5um: High precision machine, is 0.4-06m
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