JB/T 7967-1999 JB/T 7967-1999 Involute internal spline gear shaping cutter basic types and dimensions JB/T7967-1999 Standard download decompression password: www.bzxz.net

ICS25.100
Machinery Industry Standard of the People's Republic of China
JB/T7967-1999
Involute Internal Spline Gear Shaping Cutter
Basic Types and Dimensions
Published on 1999-05-20
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T7967-1999
This standard is a revision of JB/T7967-95 (formerly GB6341-86) "Basic Types and Dimensions of Involute Internal Spline Gear Shaping Cutter".
During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. This standard replaces JB/T7967-95 from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed and managed by the National Technical Committee for Tool Standardization. The responsible drafting units of this standard are Taiyuan Gongqi Factory and Chengdu Tool Research Institute. The main drafters of this standard are Hu Hongren and Shen Shichang. Scope
Mechanical Industry Standards of the People's Republic of China
Involute Internal Spline Gear Shaping Cutter
Basic Type and Dimensions
JB/T7967-1999
Replaces JB/T 7967-95
This standard specifies the basic types and dimensions of involute internal spline gear shaping cutters with a module of 1~10mm and a standard pressure angle of 30°, which are used to process flat-top internal splines specified in GB/T3478.1~3478.2-1995 "Cylindrical Spur Involute Splines". The accuracy grades are divided into A and B. The accuracy and technical requirements of involute internal spline gear shaping cutters manufactured according to this standard shall comply with the provisions of GB/T6082-1985 "General Technical Conditions for Spur Gear Shaping Cutters".
This standard applies to involute internal spline gear shaping cutters (hereinafter referred to as gear shaping cutters). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the version 4 shown is valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T3478.1-1995 Basic tooth profile tolerance of cylindrical spur involute spline module GB/T3478.2-1995 Dimension table of 30° pressure angle of cylindrical spur involute spline GB/T6082-1985
3 Basic types and sizes
General technical conditions for spur gear shaping cutters
3.1 Gear shaping cutters are of two types: tapered shank and bowl-shaped. Taper shank gear shaping cutters (Figure 1, Table 1. Table 2), with nominal circle diameters of 25mm and 38mm. Bowl-shaped gear shaping cutters (Figure 2, Figure 3, Table 3 to Table 6), nominal circular diameters are 50mm, 75mm, 100mm, and 125mm. 3.2 The basic types and dimensions of gear shaping cutters shall be in accordance with the provisions of Figures 1 to 3 and Tables 1 to 6. Figure 1
Gear shaping cutters with tapered shanks approved by the State Bureau of Machinery Industry on May 20, 1999
Implementation on January 1, 2000
JB/T7967—1999
Nominal circular diameter 25mm
α=30°
Note: In the original cutting surface of the gear shaping cutter, the tooth height coefficient is \ (see Table A1), and the circular arc tooth thickness is equal to the nominal circular diameter 38mm in Table 2
Note: In the original section of the tooth force,
α=30°
The tooth pre-height coefficient is (see Table A2), the four-arc tooth limit is equal to L
Class cone number
Mo's short net sugar number
JB/T7967—1999
Carbon-shaped sowing gear cutter (Φ50)
Sulfur-shaped gear shaping cutter (Φ75~Φ125)
Table 3 Nominal diameter 50mm
α-30°
, the tooth top height coefficient is (see Table A3), the arc tooth is originally equal to the positive four Note: In the original section of the gear shaping cutter,
JB/T 7967—1999
Table 4 Nominal circle diameter 75mm
r=30°wwW.bzxz.Net
Note: In the original section of the gear shaping cutter, the tooth pre-height coefficient is (see Table A4), and the tooth height coefficient is equal to 2
Table 5 Nominal circle diameter 100mm
α=30°
1 In the original section of the gear shaping cutter, the tooth height coefficient is (see Table A5), and the arc tooth thickness is equal to 2. According to user needs, the inner hole diameter of the gear shaping cutter can be made into 44.443mm. Nominal circle diameter 125mm
α=30°
1 In the original section of the gear shaping cutter, the tooth height coefficient is (see Table A6). Arc tooth thickness is equal to 2
2 According to user needs, the inner hole true diameter of the gear shaping cutter can be made into 44.443mm. B
Base circle diameter 4,
JB/T 79671999
Appendix A
(Appendix of standard)
Tooth profile dimensions of gear shaping cutter
Figure A1 Projection of cutting edge on the front end face Involute tooth profile has
6 points onwards
Figure A2 Check the tooth profile in the secondary face at 2.5mm from the front end face Diagram AI
Gear shaping cutter with taper shank with nominal circle diameter of 25mm d
Note: The P value is calculated according to the gear shaping cutter in Table A7 and the corresponding number of internal spline teeth 2. Pmo
Tooth Height Coefficient
JB/T 7967-1999
Taper Shank Gear Shaper Cutter with Nominal Circular Diameter of 38mm h
Note: The P value is calculated based on the gear shaping cutter in Table A7 and the corresponding number of internal spline teeth z. Table A3
Bowl Shape Gear Shaper Cutter with Nominal Circular Diameter of 50mm h
The P value is calculated based on the gear shaping force in Table A7 and the corresponding number of internal spline teeth z. Note:
Sulphur Shape Gear Shaper Cutter with Nominal Circular Diameter of 75mm h
The P value is calculated based on the gear shaping cutter in Table A7 and the corresponding number of internal spline teeth z. :
Nominal circular diameter of 100mm bowl-shaped gear cutter h
Note: P value is calculated according to the number of teeth of the gear cutter and the corresponding internal spline in Table A7. Pna
JB/T7967-1999
Table A6 Nominal circular diameter of 125mm bowl-shaped gear cutter d,
Note: P. value is calculated according to the number of teeth of the gear cutter and the corresponding internal spline in Table A7. Table A7
Gear cutting force Nominal circular diameter mm
1 Gear cutter selection number,
2 A gear cutter can add 1 minimum number of teeth of the internal spline. P.
The number of small teeth of the internal spline that can be processed by the gear cutter 38
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