JB/T 8045.3-1999 Machine tool fixture parts and components quick change drill bushings

JB/T 8045.3-1999 This standard is a revision of JB/T 8045.3-95 "Quick-change drill sleeves 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 quick-change drill sleeves with specifications greater than 0 to 85 mm. This standard was first issued in 1981 as GB 2265-80, first revised to GB/T 2265-91 on April 30, 1991, and adjusted to JB/T 8045.3-95 in April 1996. JB/T 8045.3-1999 Quick-change drill sleeves for machine tool fixture parts and components JB/T8045.3-1999 Standard download decompression password: www.bzxz.net

ICS 25. 080. 01
Machinery Industry Standard 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 Machinery Industry Bureau
2000-01-01 Implementation
1 Scope
Machinery Industry Standard of the People's Republic of China
The'parts and units of jigs and fixturesQuick change bit holder
This standard specifies the quick-change drill sets with specifications greater than 0 to 85 mm. 2 Reference standards
JB/T8045.3—1999
JB/T8045.3—1995
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 699—1988
GB/T 1298—1986
JB/T 8044—1999
Technical conditions for high-quality carbon structural steel
Technical conditions for carbon tool steelbzxZ.net
Technical requirements for machine tool clamps and their parts and components
JB/T8045.5—1999
Machine tool clamp parts and components drill sleeve screws
3 Dimensions
The dimensions are shown in the figure and table below.
Network efficiency belt 0.
Approved by the State Machinery Industry Bureau on August 6, 1999 and implemented on January 1, 2000
Basic size
>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
Limit Deviation
Basic Size
Limit DeviationLimit Deviation
JB/T8045.3-1999
110|104
1When used as (expanded) sleeve, the tolerance zone of d is recommended as follows:124
JB/T 8045.5
Matched Screw
JB/T 8045.5
Use the tool J specified in GB/T1132-1984 "Straight Shank Machine Reamer" and GB/T1133-1984 "Taper Shank Machine Reamer". When reaming H7 hole, take F7; when reaming H9 hole, take E7. When reaming (expanding) other precision holes, the tolerance zone is selected by the design. 2 Marking example of the hinge (expansion) sleeve: d = 12mm tolerance band is E7, D-18mm tolerance band is m6, H = 16mm quick change (expansion) sleeve: hinge (expansion) sleeve 12E7×18m6×16JB/T8045.3—1999262
Technical conditions
JB/T8045.3—1999
4.1 Material: d≤26mmT10A shall comply with the provisions of GB/T1298. d>26mm20 steel shall comply with the provisions of GB/T699.
4.2 Heat treatment: T10A is 58~64HRC; 20 steel carburizing depth is 0.8~1.2mm, 58~64HRC. 4.3 Other technical conditions shall comply with the provisions of JB/T8044. 5 Marking
5.1 Marking example:
Quick-change drill sleeve with tolerance zone F7, D-18mm, tolerance zone k6, H=16mm: drill sleeve 12F7×18k6×16JB/T8045.3—1999263
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