JB/T 8045.1-1999 This standard is a revision of JB/T 8045.1-95 "Fixed Drill Bushings for Machine Tool Fixture Parts and Components". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard specifies fixed drill bushings with specifications greater than 0 to 85 mm. This standard was first issued in 1981 as GB 2262-80, and was first revised to GB/T 2262-91 on April 30, 1991, and adjusted to JB/T 8045.1-95 in April 1996. JB/T 8045.1-1999 Fixed Drill Bushings for Machine Tool Fixture Parts and Components JB/T8045.1-1999 Standard download decompression password: www.bzxz.net

ICS 25. 080. 01
Standard of the Machinery Industry of the People's Republic of China
The parts and units of jigs and fixtures
The parts and units of jigs and fixtures1999-08-06 Issued
State Bureau of Machinery Industry
Implementation on 2000-01-01
Standard of the Machinery Industry of the People's Republic of China
Parts and units of jigs and fixturesFixed bit holder
This standard specifies the fixed bit holder with a specification greater than 0 to 85 mm. Referenced Standards
JB/T8045.1-1999
Replaces JB/T 8045.I—1995
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T699—1988
GB/T1298—1986
JB/T8044—1999www.bzxz.net
Technical conditions for high-quality carbon structural steel
Technical conditions for carbon tool steel
Technical requirements for machine tool fixture parts and components
The dimensions are shown in the following figure and table.
Approved by the State Machinery Industry Bureau on August 6, 1999 256
Implemented on January 1, 2000
Basic size
>1.8 ~2.6
>10 ~12
>12 - 15
>15 - 18
>18-22
>22 - 26
>26 -30
>30 -35
>35-42
>42 -48
>48~50
>50 ~55
> 55 ~ 62
> 62 ~70
>70 ~78
>78~80
>80 ~85
4Technical conditions
Limit deviation F7
Basic size
JB/T8045.1-1999
Limit deviation D6
Material:
d≤26mmT10A shall comply with the provisions of GB/T1298. 4.1
d>26mm20 steel shall comply with the provisions of GB/T699.
4.2Heat treatment: T10A is 58~64HRC; 20 steel carburizing depth is 0.8~1.2mm, 58~64HRC. Other technical conditions shall comply with the provisions of JB/T8044. 4.3
5 Marking
5.1 Marking example:
d18mm,
H-16mm A-type fixed drill sleeve:
Drill sleeve A18×16JB/T8045.1—1999
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