JB/T 8046.1-1999 JB/T 8046.1-1999 Machine tool fixture parts and components boring sleeves JB/T8046.1-1999 Standard download decompression password: www.bzxz.net

ICS 25. 080. 01
Standard of the Machinery Industry of the People's Republic of China
Parts and units of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06 Issued
State Machinery Industry Bureau
2000-01-01 Implementation
Standard of the Machinery Industry of the People's Republic of China
Parts and units of jigs and fixturesBoring holder
This standard specifies mirror holders with specifications of 20~160mm. Referenced Standards
JB/T 8046.1—1999
Replaces JB/T-8046.1—1995
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were 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/T 699--1988
GB/T 830—1994
GB/T 94391988
JB/T 7940.41995
JB/T 8044—1999
JB/T8046.3-1999
3 Dimensions
Technical conditions for high-quality carbon structural steel
Slotted cylindrical head axial screws
Gray cast iron grades and mechanical properties
Press-fit oil cup
Technical requirements for machine tool fixture parts and components
Machine tool fixture parts and components Boring sleeve screws
The dimensions are shown in the following figure and table.
Approved by the State Machinery Industry Bureau on August 6, 1999 268
Implemented on January 1, 2000
Two grooves m0.:
Basic size
Limit deviation H6
Limit deviation H7
Basic size
Limit deviation g5
Limit deviation 6
JB/T 8046.11999
GB/T7940.4
GB/T830
JB/T8046.3
100110
Basic size
D, knurling
D, knurling front
Matching screw
22.524.526.5||tt ||GB/T830wwW.bzxz.Net
JB/T8046.1-1999
Table (end)
M10×8
GB/T830
M12×8
JB/T8046.3
The tolerance zone of d or D, the fit barrier between d and the outer diameter of the rod or D and the inner diameter of the bushing can also be determined by design. 2 When the tolerance zone of d is H7, the roughness of the d hole surface is R,0.8. 4 Technical conditions
4.1 Material: 20 steel according to the provisions of GB/T699. HT200 according to the provisions of GB/T9439.
M16×8
JB/T8046.3
4.2 Heat treatment: 20 steel carburizing depth is 0.8~1.2mm, 55~60HRC: HT200 is subjected to aging treatment after rough machining. 4.3 When the tolerance band of d is H7, =0.010: When the tolerance band of d is H6, when D<85, 0.005: D≥85, 0.010. 4.4 The sharp angle of the oil groove is blunted after grinding.
4.5 Other technical conditions shall be in accordance with the provisions of JB/T8044. 5 Marking
5.1 Marking example:
d=40mm, tolerance zone H7, D=50mm, tolerance zone g5, H-60mm A-type boring sleeve: mirror sleeve A40H7×50g5×60JB/T8046.1—1999270
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