GB 18955-2003 Woodworking tools safety milling cutters, circular saw blades
Some standard content:
The third and fourth clauses of this standard are mutually initiatory, and the rest are mandatory. GB18955—2603
This standard is formulated based on the European standard EN8471:1S97 Safety requirements for woodworking tools: Part 1, Standard knives and steel saw blades. It is basically consistent with EN8471 in terms of technical content, and adds the balance requirements for carbide mesh saw blades. From the implementation of this standard, 4.1, 4.2, 5.3 of this standard shall be modified or adjusted. The safety requirements for milling cutters and saw blades specified in clause 1 of this standard shall be subject to this standard. Annexes A and B of this standard are both appendices of the standard. This standard is issued by the China Machinery Industry Joint Branch. This standard is under the responsibility of the State Machinery Research Institute. The drafters of this standard are Zheng Jujian and Zheng Jian. This standard was first issued on January 1, 2005. Scope
Woodworking tool safety milling cutters, circular saw blades
GH18955—2003
This standard applies to the hazards caused by the use of this type of machine, and describes the dangers that can be eliminated or reduced by designing the tool and providing protection:
This standard covers the main tools (milling cutters with holes, pliers and milling cutters integrated with the main body) and saw blades, but does not include the relevant hazards of the shank of the milling cutter, the hazards of the service life, etc. This standard does not apply to small drill bits, standard cutters with a diameter of less than 16mm, and tools used on lathes and copy lathes with larger cutting tools.
2 Normative references
The clauses in the following documents are regarded as clauses of this standard through reference in this standard. For documents with a date of publication, all subsequent versions (excluding erroneous contents) or versions are not applicable to this standard. However, the parties who reach an agreement on the standard may use the latest versions of these documents. For documents without a date of publication, the latest version shall apply to this standard. B/T1800-41093 Limits and fits of tolerance grades and limit deviations of holes and shafts Determination of allowable imbalance of rotor balance quality G/T925919A8
GB12557-2000 Safety general purchase of woodworking machine parts (B/T13573-1995 Woodworking face
GH/T14568·1993 Carbide mesh saw on wood GB/T14857.1-:9 Woodworking Basic terminology H1153791994 Technical Basic terminology of machine tools GB/T16755-1997 Safety of machinery Safety standard 1S0515:1991 Machining of hard cutting materials with chip removal Application of cutting group and application group: Expression method 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
This standard
Tmllling 1ool ror Woodworking is a kind of rotary tool (such as forming knives, flat knives and tools on press machines). Generally speaking, it feeds the tool in a straight line along its axis of rotation and processes various shapes on wood or other materials by cutting chips. Some of them are: parallel to the axis of rotation: perpendicular to the axis of rotation; the combination of the two forms is the tool form: the body is the tool, welding tool: assembly tool: GR189552003. ||The CEC issued
saw blade (woodworking) cireular saw blade farwoodworkiug a kind of rotary saw blade, which can be used to cut wood and similar materials by cutting longitudinally or transversely, and it can cut on both the surface and the surface at the same time, and can be:
integral tool;
welded tool or
combined tool.
mepiece1not
integral tool
see (:B/T14897.1-1994 2.15
welded tool
ubmprwite tnnl (tpped tool>
5 GE/T 11897.1 1934 2. 16
Assembly tool
mplextool
GB/T 14897. [ - 1994 2.16.3.6
Combination tool
tool set.
See GB/T14897.12.17.
Tool body borty
See GE/T 14657.1—1994 3 t.3. 8
Cutting part
euHingparl
See 3.5 in GR/T 14697.1-:934,
cutting diameter (radius) cutting diapulerdcugrydign) For tools with various blades, the cutting diameter (cutting radius) refers to the largest value (see Figure 1). New
1T8.2.1.23
Figure 1 Cutting diameter
Reverse cutter (maximum feed per tooth) delectur (calnter-kaife) A projection: It is detachably mounted or firmly attached to a part of the cutter or cutter body by bonding, or is a projection inherent in the cutter body, which provides a measure of the chip thickness (see Figures 2h, d, e and 2). 2
The difference between the radius of the front cutting circle and the radius of the back bearing is = (2). d
Figure 2 Reverse cutter
The length of the clamping element Lclampnglength
The part of the clamping element that is exposed on the body (see Figure 3). 3.13
The radial cutting edge measurement c, radial cutting qeprjecting GB18955—2003
The radial cutting edge measurement c must be the difference between the cutting edge measurement in the reverse direction (non-measuring tool) or in the normal direction (measuring tool) and the cutting edge measurement in the normal direction (see Figure [ and Figure 2). Note: The definition of the cutting edge in H.13 (3.1) is the limit of the cutting thickness: 3.4
The axial projection of the cutting edge G, nxla)cuttingedgeProjectingGB189552003
The distance between the axial cutting edge and the body of the axial disc in the axial direction (Fig. 2a) or the reverse direction (Fig. 2d), 3.15
roondformtoal
Guoying cutting tool
This tool body is shaped in any section from its rotating axis, and the limit of the cutting thickness is achieved by the tool, see Fig. 2:) and 43.
Non-shaped tool
nnInund farprtoo
This kind of knife is limited to the cutting thickness version of a reverse knife to bend (see Figure 2), c>, d), and) or the cross-section of the knife body is not shaped (see pressure 2)].
Adhesive fixing
adhesive fixing
The knife points are bonded together to prevent the relative position from changing. 3. 18
Separable fixing
Separable fixing
Pressure anti-loosening fixing (see Figure 3)bs
3 Friction anti-loosening fixing
This fixing is to prevent the radial changes during rotation by the shape and structure of the parts. 3. 1B.2
Farmnlackfixing (see Figure 4)
Shape anti-loosening fixing
Figure 4 Shape anti-loosening fixing
This fixing is to prevent the radial changes during rotation by the shape and structure of the parts. 3.19
The radial and axial surfaces of the reverse tool (see Figure 5) refer to the planes on the radial and axial surfaces of the reverse tool, located in front of the small space 3.20
The radial reverse angle radlal approach angle, the angle between the reverse bevel and the plane tangent to the reverse tool surface at the reverse tool edge (the plane that is tangent to the tool surface at the starting point of the reverse bevel) (see Figure 5),
The radial surface of the reverse tool and the axial bevel
The axial angle of the reverse tool Axial approach angle is the angle between the plane parallel to the tool axis and the plane parallel to the tool axis (see Figure 3. 22
kickbackvolocityratioYg/vThe ratio of the velocity of the ejected T piece to the cutting speed W3.23
woodworklngmachine
See 2.1 of CB/T15379.1994.
similarmaterials
18955—2003
Materials with similar physical and technological properties to wood (e.g. cork, bone and particleboard, fiberboard, plywood, etc.) and materials similar to wood in mechanical processing and cutting or graining, such as plastic, wood or other rigid materials. 3.25
tool
All tools for mechanical cutting, such as saw blades, band saws, saw blades, chain knives. Tool including forming processing device and non-torque cutting device
Handfeed
pure GB125572000 3.3.
Mechanical feed
see CB 12557-20003.5.
speed range speed rangec
the tool shaft or the tool can operate within the larger or smaller range. 3.29
loading and mucking
see GB12557-20003.6.
Removable motorized feed demonntable pawer feed unlt(18955-2003
see GB =2557-2UUU 3.4,
Sugar Xieeecton
12557—200u3
Rebound kxback
CB12557—20003.11.
Cutting material group code
The following material codes are recommended:
Metalworking steel contains less than 6 alloy components) HL high alloy T high quality vehicle (metal content is greater than 5%, such as 12% C) HS high speed full-scale W, Mo.V.La total content is greater than: 2%) H non-hard high alloy on silicon carbide (see 1S0513:15S1) except your gold exhibition (g130513191)
ST beast casting
multi-experience stone (see IS513:1 pure 1)
5 Dangers are listed in the table
See the table for a list of accidents! ,
Table 1 Hazard list
Control and interruption
Study
Danger level
Hazard related to health abnormalities
Danger caused by
Technical ideas
Product surface hazards
For all installations, the dynamic
of fixed pieces is not inquired. If the point is rotating. Uneven
The main
of the machine tool
knife operation method
10,000, unbalanced
Sequence/F755109,
6 Design requirements
, 1 General requirements for iron knives and saw blades in the country
Relevant provisions in the international standards
6, 1, 1.6, 1, 3,6. 2. $,7, 1.7, 2,B, 2,B 3,B. 56.1.2,6,1. 4
5, t, 2.6, 1.4
6,1,2,6.1.7
6. 1.5. 1,6.2, 4.6.3.5
63.2.6,2. 2.0.2. 3.7,2 A
6. 2. 5. 2,6, 2. 1.E 5
0.2.5.5.5
6. 1. 5. 1,0.3. 1.t. 2. 5
The materials used shall be guaranteed to withstand the specified forces and other loads according to the manufacturing instructions and maintenance. This can be ensured by calculation tests specified in 5.1. Safety requirements/measures
For knives with holes and knives integrated with the spindle, for spindle springs less than or equal to 1200C1/m, the safety factor calculated shall be at least 18955-2003
(i.e. 2% of the rated speed); the spindle speed shall be 1200r/m0 and the safety factor calculated shall be at least 2.25 (i.e. 1.5% of the rated speed).
Assembly knives are required to undergo centrifugal force tests (see 1.3). Manufacturers are allowed to start implementing this item one year after the implementation of this standard. The test is carried out in conjunction with the instructions for use of the relevant central parts of the case or torque. Year shape inspection method: check the design book or frame. 1.3 specified test, 6.1.2 can be divided into two national regulations
6.1.2.1 shape protection inspection fixed and rate connection protection inspection fixed distribution lamps can be used under the following conditions. The rate of moving force is fixed. In addition, the color shape is loose. India is not a flat bed wood pressure wound piece: b) used for mechanical reverse feeding system to the library on the month (except for the type of work! The blade of the machine and the blade on the machine. Inspection method, inspection of the corresponding figure Kun, measurement and daily measurement of the soldiers, 6. 1.2.2 Type 1.2.2 Assembly tools (with a counter knife) should be clamped only when the counter knife is in place. The tool should ensure a positive mechanical connection between the separable tool parts (e.g. pins, flanges) and not rely solely on the friction between the parts. When pin protection is used: a) If the blade width is less than or equal to 0mm, at least 1 pin shall be used for each blade (see Figure 6); b) If the blade width is greater than 50m, at least 2 pins shall be used for each blade. When hydraulic flat bed and wooden pressure bed are fixed with screw pressure strips, see Figure 3b and Figure 4. When the door is removed, at least two screws are required for the pressure strip. Figure 6 shows the auxiliary assembly type of the knife. When it is a piece, use Figure 3). The distance between the knife strip and the knife surface exceeds the limit of mm. The test method is to check the corresponding drawings: the test chapter and all the test items are tested to check whether the assembly can only be locked when the reverse force is in place. 6.1.3 Test of assembly force tools 6.1.3.1 Test object Before assembly, the sample is subjected to a centrifugal force test at a certain temperature. The disassembled pieces of parts are counted by the therapist. The values required in the corresponding position test procedure are not considered to be consistent with the values required in the test procedure (see 6.1.3, 2). It is considered to have the strength to withstand the expected centrifugal force n, 2me12000/2inb
=1.5n12GCO /minm
-testing the rotating table
,-~for its maximum working speed
actually tighten the parts according to the pulling distance provided by the manufacturer. Tighten. Product 1.3. 2 Test procedure
1) Measure the tool length:
2) Make sure it runs at the maximum depth"
3) Make sure the tool stops rotating and measures the tool, and the measuring range displacement does not exceed 0.15m7
GE18955—2003
4) Make the tool run at the test speed for 1m;) Make sure it stops running and measures the base, and compare the measurement results with the step depth measurement results, the difference between the comparisons shall not exceed 0.15 mm.
The centrifugal test shall be carried out on the products with the maximum cutting diameter and the maximum cutting width. 5.1.4 Blade original length and minimum clamp length
The cutting H5 and HL are not based on the reference (see the definition in Chapter 3). The relationship between blade thickness and clamp length is determined by the formula in 6.1.1.7. The relationship between blade thickness and clamp length is determined by the formula in 6.1.4.2 and the table in Figure 8. 6.1.4.1 Integral blade or welded blade
Separable tool The minimum clamp length and minimum blade thickness shall be determined by the formula: Note: The following formula is used for the most harmful formula: a.mt1 mm
mn0.25t-0.75105mm
HiS a..-0.:25:1-1.4
T.anh=G.143++ 1.285
SP=0. 171r-+ 1. 115
where a...unit is mm
E.=(,48-3.8)m,month shape age determination
115 mm,3,15 mm used the probing force to follow the loose expansion determination Ei\tmm,t>15mm
Test method: check the corresponding diagram and visually inspect only. Practice 1:
can be piece by piece! mm cutting material full SP)
. 10,000 pieces with small quarter 3.? mm
Minimum clamping length (shape locking >..=111m or, mm relay fixing),
If the selected film is larger than the minimum thickness 2m=3.7mm, but not less than the next integer, i.e. 4nm (.7%a%4), girl 44am, the length of the two small clips is equal to the value of the previous period relative to the blade output = m, that is, = 11mm (for the shadow-shaped fixed>, or, m=15mm (for the support force detection cage). If it is known that the maximum blade extension is 15, the blade unit length is greater than the next integer (4>4), for example = 5m, then the minimum effective blade is selected according to the larger blade friction, theoretically + -22.5mm is obtained), but the blade output is maintained at 115mm, for example 1.-14.6mm for the loose surface determination), or, 4l: = 23.5mm for the joint force reduction determination). Example 2:
Given the thickness of the blade -5 cutting process set SP, the maximum blade stop length 1 = 22.5m Minimum optical length (shape) m = 14.mm, . = 22.5m (sequence: 6, 1.4.2 Physical quality alloy (HW, HC) blades should be alloy bonded blades (HW, HC) with small thickness & m and small clips. The length should be 1 as the blade. According to the requirements of tooth 8, select
blade thickness greater than 2mm, the blade length should be as follows: nh = 0, 54 1 0, 5, The unit of 4 is mm=+5, and the unit of 4 is mm. CB18955-2003 GB18955-2003: The minimum thickness of the blade is 2.05mm. GB18955-2003: The minimum optical length is 1al=4.1mm. If the thickness of the blade used is greater than the minimum thickness of 41.05mm, the length should be 1.5mm, which corresponds to the selected blade thickness of 1.5mm, and the surface should be kept at 1.1mm. If the blade thickness = 2 mm, the blade extension should not exceed 5 mm. Please check the corresponding method according to the following table. 6.1.5 Dimensions and tolerances 6.1.5.1 Inner hole tolerance The tolerance of the blade should be selected according to the following: The inner hole of the blade should be made according to G/T1800.1599. The diameter of the blade with a width greater than 1 mm can be made according to G/T130.18. The inner hole of the high-quality alloy blade and the inner hole of the front blade on the multi-blade saw machine should be made according to G/T1800.1599. 900.4-1U99 FI9, other common woodworking circular channel pieces are made according to GB/T1800,4-1599 H11. Test method: check the corresponding drawings, actual measurement. 6.1.5.2 Support surface diameter and tolerance Www.bzxZ.net
The minimum diameter of the two bearing seats is:
.m; when
) m,
The milling box surface net should be measured near the outer light of the empty bearing surface, and the tolerance should be connected to the doctor on the surface of the bearing surface. The saw blade is divided into /! 4336-1093 and GB/13573-199 yuan. The inspection method is to inspect the corresponding drawings and make actual measurements. 6. 1.6 The weight of the end is less than 15, and the shape is not suitable for connecting with the conveying device. It should be a structure connected with the parts (for example, period, etc.). Inspection method: Check the corresponding sample, measure and weave it. 6.2 Special requirements for milling cutters 6.2.1 Used for manual feed machines 6.2.1.1 Cutter form The tool used on the dynamic feed machine is a shaped tool (see 3.15) or a non-functional tool (see name. 16). This work is about the dual-purpose flat press machine 1. The planer has a shaped surface. Test the force method, check the corresponding sample, measure and tool. 6.2.1.2 Blade single output cover and loss rate ratio
The blade skin on the manual feed machine tool with a cutting speed greater than 70m is said to be fed*return and rebound force: except for the milling force and similar corridor-shaped washing knives, the standard library expansion of each light structure type in Figure 1 is carried out with this rebound test: the tool change and loss rate selection force are tested separately, except for the planer and the engraving machine used on the original machine, the medical knife used on the machine should be designed in sections. The material should be fed to the single output (with the limit of the machine (see text 3,13) and the input (see definition.M) should be arranged in the direction of the machine (see definition.M) and the return single speed ratio %/% test carried out in 6.2.1.6 should be within the limit range specified in Figure 2.
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