JB/T 7970.1-1999 JB/T 7970.1-1999 Disc gear milling cutters Part 1: Basic types and dimensions JB/T7970.1-1999 Standard download decompression password: www.bzxz.net

ICS25.100.20
Machinery Industry Standard of the People's Republic of China
JB/T7970.1-1999
Disc Gear Milling Cutters
Part 1: Basic Types and Dimensions
Published on May 20, 1999
IB/T79701-1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
7970.1-1999
This standard is a revision of JB/T7970.1-95 (formerly GB9063.1-88) "Disc Gear Milling Cutters" This standard is a part of the JB/T7970 series of standards for disc gear milling cutters. The series of standards includes the following two parts: JB/T7970.1—1999
JB/T7970.2—1999
Disc gear milling cutters
Disc gear milling cutters
Part 1: Basic types and dimensions
Part 2: Technical conditions
This standard replaces JB/T7970.1—95 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Tool Standardization. The responsible drafting unit of this standard is Chengdu Tool Research Institute. The main drafters of this standard are Chen Qitao and Shen Shichang. Mechanical Industry Standard of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Disc Gear Milling Cutter
Part 1: Basic Types and Dimensions
This standard specifies the basic types and dimensions of disc gear milling cutters. This standard applies to disc gear milling cutters with a reference tooth angle of 20° and a module of 0.3~16mm. 2 Referenced Standards
JB/T7970.1-1999
Replaces JB/T7970.1-95
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/T6132-1993 Interchangeable Dimensions of Milling Cutters and Milling Cutter Arbors Basic Types and Dimensions
The basic types and dimensions of disc gear milling cutters are as specified in Figure 1 and Table 1. C
a) m0.3~0.9
Approved by the State Machinery Industry Bureau on May 20, 1999c) m 7~ 16
b) m1~6.5
Implemented on January 1, 2000
Module series
JB/T 7970.1-1999
JB/T 7970.1-1999
Each module milling cutter consists of a set of 8 or 15 cutter numbers. The range of the number of teeth of the gear milled by each cutter number is listed in Table 2.
Milling cutter number
Marking example
Module 10mm, No. 3 disc gear milling cutter is marked as: 4
Gear milling cutter m10—3
JB/T7970.1—1999
≥135
The keyway size and tolerance of the milling cutter shall comply with the provisions of GB/T6132. For milling cutters with a module not greater than 2mm, it is allowed not to have a keyway. 6
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Mechanical Industry Standard
Disc Gear Milling Cutters
Part 1: Basic Types and Dimensions
JB/T 797011999
Published and distributed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijingbzxz.net
Postal Code 100044)
Format 880×12301/16
Print Sheet XX Number of Words XXX,XXX
First Edition in XX Month, 1999
First Printing in X Month, 1999
Print Quantity 1-500
Price XWXXX Yuan
99-401
6611026
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