GB/T 5342-1985 Indexable face milling cutter GB/T5342-1985 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Indexable face milling cutters
Facemiling cutters with indexable insertsUDC 621.914
GB 5342-—85
This standard applies to taper shank face milling cutters and sleeve face milling cutters with carbide indexable inserts. The "type and size" part of the sleeve face milling cutter in this standard is formulated with reference to the international standard ISO6462-1983 "Face milling cutters with indexable inserts-Dimensions", and is divided into three types: A, B, and C according to their fixing methods. 1 Type and size
The type and size of taper shank milling cutters shall be as per Figure 1 and Table 1. 1.1
Morse taper
D(js14)
Basic size
L(h16)
Basic size
1.2 Type and size of sleeve-type face milling cutters
Morse taper shank
1.2.1 Class A milling cutters use
a hexagon socket screw to fix the milling cutter on the end key drive arbor. Its type and size shall be as per Figure 2 and Table 2. Issued by the National Bureau of Standards on August 31, 1985, implemented on July 1, 1986, D (js16) Basic dimensions (H7) Basic dimensions Note: Dimensions with brackets should not be used as much as possible. GB534285 = 90°D,D
d minimum
Kr=45°, 60
75° or 90
Number of teeth (reference)
1.2.2 Class B milling cutters use a slotted screw to fix the milling cutter on the end key drive arbor. Its type and size are in accordance with Figure 3 and Table 3. 121
D(js16)
Basic size
: Dimensions with brackets should be avoided as much as possible.
GB5342-85
k = 90 D,D D
d, minimum
45*, 60
75 or 90
(reference)
1.2.3C type milling cutter is installed on the 7/24 taper shank centering tool bar, and the milling cutter is fixed on the milling machine spindle 1 with four hexagon socket screws. 1.2.3.1 The type and size of the milling cutter with diameter D=160, 200 and 250mm are in accordance with Figure 4 and Table 4122
D (js16)
Activity: The ones with calcium numbers are least used.
GB 5342--85
6075° or 90
The milling cutter body can be formed with a countersunk seat
or a circular groove (as indicated by the dotted line)
b(H12)
2The type and size of the milling cutter with a first diameter D=315, 400 and 500mm shall be in accordance with Figure 5 and Table 51.2.3.2
GB 5342-85
Cup = 45°, 60 °
75° or 90°
The sharp tool body can be made with a countersunk seat
or an A-shaped groove (as shown by the dotted line)
D(js16)
Basic dimensions
Basic dimensions
Note: Dimensions in brackets should not be used as much as possible. +0.03
b(H12)
Basic dimensions
1.3 The end face keyway is in accordance with GB6132-85 "Interchangeable dimensions of milling cutters and milling cutter arbors". 1.4 The end key drive arbor is in accordance with JB352883 " 7:24 Taper Shank with End Key End Milling Cutter Arbor Dimensions". 20
(reference)
1.5 7/24 Taper Shank Centering Cutter Arbor shall be in accordance with GB3837.3-83 "Machine Tool 7:24 Taper Connection Tool Taper Shank" 1.6 The type and size of the milling cutter blade shall be in accordance with GB2076-80 "Rules for Representing the Model of Indexable Inserts for Cutting Tools" and 1GB2081-80 "Cemented Carbide Indexable Gate Blades for Milling Tools" with priority. 1. The code and representation rules of the milling cutter shall be in accordance with Appendix A of this standard: Examples of Marking for Rotatable Face Milling Cutter (Supplement). 2 Technical Requirements
2.1 The milling cutter blade shall not have cracks or chipping, and the other parts shall not have defects such as cracks, notches and rust that affect the performance. 2.2 The position tolerance of the milling cutter blade positioning surface and the milling cutter shank (or end face) shall be in accordance with Table 6. 121
Normal (or radial) run-out of the main cutting edge
Instantaneous run-out of the end edge
End face run-out of the supporting end face
Radial run-out of the shank
GB5342—85
= 63 ～ 160
糊邻芮
20～315
Note: ") When checking runout, the taper shank milling cutter is based on the common axis; the taper shank milling cutter is positioned with the inner hole and the end. ②) The check of the blade circle runout should be carried out on the cutting agent. The precision of the blade installed on the professionally produced milling cutter shall not be lower than Class 1C (according to GB2081-80)
The surface roughness (according to GB1031-83) shall not be higher than: 2.4
The outer circle of the shank of the taper shank milling cutter: Ra0.63um. The inner hole and the surface of the cargo milling cutter: Ra1.25um. The cutter body is made of alloy steel, and its hardness: 2.5
The head of the taper shank milling cutter is not less than HRC45, and the shank is HRC35~0. The sleeve milling hole is not less than HB220, and the positioning hardness of the direct contact with the blade is not less than HRC45. The hardness of the other parts under the milling cutter: the positioning element is not less than HRC50: the tightening element is not less than HRC40
2.6 The tightening of the milling cutter chip should be reliable to ensure that the blade does not loosen or move during the cutting process. 2.7 Each part of the knife should be able to be replaced.
2 Test method
400-500www.bzxz.net
The blade for the knife performance test is P20 hard alloy (according to GB207581 "Special hard alloy classification and classification code"), and the test material is 45 steel with a hardness of HB170~200. 3.2 No coolant is used during the test.
3.3 The test cutting agent specification is in accordance with Table 7.
Cutting speed
150~12 0
Feed rate mm||tt| ... 4.2 Packaging
The milling cutter should be treated with rust prevention before packaging, and the packaged milling cutter should be protected from damage. 2
1 Milling cutter diameter
D =80, 100, 125, 160, 200,
25.315.400, 500, 630
3 Number of milling cutter teeth
28, 36, 44
2 Type of milling cutter installation
GB5342—85
Appendix A
Example of marking for indexable face milling cutters
(Supplement)
4 Cutting direction of milling cutter
Blade clamping method
Monthly piece after Australian block Clamping
Clamping before insert change
6 Main offset of insert
7 Insert shape
8 Insert cutting edge angle
9 Insert cutting edge length
0 Insert wiper edge cutting edge angle
GB5342--85
Appendix B
Three-point positioning dimensions of indexable inserts
(reference)
This appendix complies with the provisions of Appendix B in GB5340-85 Indexable End Mills. Additional remarks:
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard was drafted by the Chengdu Tool Research Institute of the Ministry of Machinery Industry. The main drafter of this standard was Lu Fuying.
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