JB/T 4371.2-1999 Self-tightening drill chuck accuracy inspection JB/T4371.2-1999 Standard download and decompression password: www.bzxz.net

ICS 25.060.20
352
JB
Machinery Industry Standard of the People's Republic of China
JB/T4371.1~4371.3-1999
Self-tightening drill clamp Head
Released on 1999-05-20
National Machinery Industry Bureau
Released
Implemented on 2000-01-01
JB/T4371.2—1999
Preface
Preface
This standard is a revision of JB4371.2--86 "Precision of Self-Tightening Drill Chuck". This standard is consistent with the technical content of JB4371.286, and has only been re-edited in accordance with relevant regulations. This standard is part of the self-tightening drill chuck series standards. JB/T4371 is under the general title of "Self-tightening drill chuck" and includes the following three parts:
Part 1 (i.e. JB/T4371.1): Parameters ; Part II (JB/T4371.2): Accuracy inspection; Part III (JB/T4371.3): Technical conditions. From the date of implementation, this standard will replace JB4371.2-86. This standard was proposed by the National Metal Cutting Machine Tool Standardization Technical Committee. This standard is under the jurisdiction of the Machine Tool Accessories Branch of the National Metal Cutting Machine Tool Standardization Technical Committee. The unit responsible for drafting this standard: Yantai Machine Tool Accessories Research Institute. The main drafters of this standard: Cui Meitan, Liu Xia. This standard was first published in 1986.
Scope
Machinery Industry Standard of the People's Republic of China
Self-tightening drill chuck
Accuracy inspection
This standard specifies the accuracy of self-tightening drill chuck and inspection methods. This standard applies to self-tightening drill chucks with tapered holes and threaded holes. 2 Quoted standards
JB/T4371.2-1999
replaces JB/T4371.2-86
The provisions contained in the following standards constitute this standard by citing them in this standard Standard provisions. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties using this standard should explore the possibility of using the latest version of the standard listed below. GB/T 197—1981
GB/T6090—1993
Ordinary thread tolerances and fits (diameter 1~355mm) drill chuck conical
GB/T17421.1—1998|| tt||General Inspection of Machine Tools Part 1: Geometric Accuracy of Machine Tools under No-Load or Finishing Conditions 3 Inspection Mandrels
Inspection Type 1 Mandrel Requirements for Drill Chucks See Figure 1. 3.1||tt ||GB/T6090—1993
Thrust
/0.005A
Figure 1
3.2 The requirements for the mandrel for inspection type II drill chuck are shown in Figure 2. 61
GB/T197
-1981
/0.003
4 Geometric accuracy inspection
The geometric accuracy inspection is carried out according to Table 1.
National Machinery Industry Bureau approved 001A on 1999-05-20
Figure 2
Implemented on 2000-01-01
1999
JB/T4371.2 -
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JB/T4371.2—1999
The inspection rod consists of sharp holes at both ends During support rotation inspection, the radial runout error of the cylindrical surface shall not be greater than 0.01mm. 5.1Www.bzxZ.net
5.2 The inspection diameter d and inspection length 1 shall comply with the requirements of Table 2
Drill chuck maximum clamp. Holding diameter
Inspection rod
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8
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10
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13
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mm
16
16×110| |tt||8×80
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