JB/T 4316.2-1999 This standard is a revision of JB 4317-86 "Accuracy of Straight Tooth End Discs". During the revision, only editorial modifications were made in accordance with relevant regulations, and the main technical content has not changed. This standard is part of the JB/T 4316 "Straight-tooth end chainring" series of standards. This series of standards includes the following two parts: JB/T 4316.1-1999 Straight-tooth end chainring series parameters and dimensions JB/T 4316.2-1999 Straight end chainring Tooth end gear disc accuracy inspection This standard only specifies the accuracy requirements and inspection methods for straight tooth end gear discs (hereinafter referred to as gear discs). This standard applies to gear discs used for circular indexing of metal cutting machine tools. This standard was first published in 1986. JB/T 4316.2-1999 Accuracy Inspection of Straight Tooth End Chain JB/T4316.2-1999 Standard Download and Unzip Password: www.bzxz.net

ICS 25.060.99
J58
JB
Machinery Industry Standard of the People's Republic of China
JB/T4316.1~4316.21999
Spur end chainring| |tt||1999-05-20 Released
National Machinery Industry Bureau
Released
2000-01-01 Implementation
JB/T 4316.2—1999||tt ||Foreword
This standard is revised on the basis of JB4317-86 "Accuracy of Spur End Disc". This standard is consistent with the technical content of JB4317-86, and has only been re-edited in accordance with relevant regulations. This standard is part of the JB/T4316 "Spur End Chain" series of standards. This series of standards includes the following two parts: Parameters and dimensions of straight tooth end chainring series
JB/T 4316.11999
Accuracy inspection of straight tooth end chainring
JB/T4316.2- -1999
This standard replaces JB4317-86 from the date of implementation. Appendix A of this standard is an appendix to the standard.
This standard is proposed by the National Metal Cutting Machine Tool Standardization Technical Committee. This standard is under the jurisdiction of the Combination Machine Tool Branch of the National Metal Cutting Machine Tool Standardization Technical Committee. The unit responsible for drafting this standard: Dalian Combined Machine Tool Research Institute. This standard was first published in 1986.
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Machinery Industry Standard of the People's Republic of China
Spur end chainring
Accuracy inspection
This standard stipulates Accuracy requirements and inspection methods for spur-end gear discs. This standard applies to spur-end toothed discs (referred to as toothed discs) used for circular indexing of metal cutting machine tools. Reference standards
2
JB/T 4316.2—1999
replaces JB4317-86
The provisions contained in the following standards are incorporated by reference in this standard. Standard provisions. At the time of publication of this standard, Edition 4 shown was 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/T17421.11998 General Inspection of Machine Tools Part 1: Geometric Accuracy Accuracy Grading of Machine Tools under No-Load or Finishing Conditions
3
The accuracy of the gear disc is divided from low to high There are three grades: ordinary grade, precision grade (M) and high precision grade (G). 4 Accuracy Inspection
4.1 Inspection on "Tooth Contact Accuracy" and "Indexing Accuracy" When the number of actual working stations of the tooth plate is certain, only the indexing accuracy of the actual working stations can be tested (can be found in The starting position of the best indexing accuracy is marked with "O") and the contact accuracy of the teeth; when the number of working stations for the gear disc is uncertain, select any three starting positions to test the above two items of the stations specified in Table 1 Accuracy.
Table!
The number of teeth on the plate
60:72
120:144
180;240
360;720
4.2 will be upper and lower After carefully cleaning the chainring, carry out the following inspections. Approved by the State Machinery Industry Bureau on 1999-05-20 14
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JB/T4316.2—1999
Appendix A
(standard appendix)
Inspection Tools and instruments
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