GB/T 3478.9-1995 Cylindrical spur involute spline measuring rod GB/T3478.9-1995 Standard download decompression password: www.bzxz.net

UDC621.886.6
National Standard of the People's Republic of China
GB/T 3478. 1~3478. 9--1995
Cylindrical spur involute splines
Straight cylindrical involute splines1995-07-12Promulgated
Implementation on 1996-05-01
Promulgated by the State Administration of Technical Supervision
National Standard of the People's Republic of China
Cylindrical spur involute splines
Straight cylindrical involute splinesMeasuring pin
GB/T 3478.9—1995
This standard adopts ISO4156 "Cylindrical spur involute splines-Metric module-Flank fits-General, dimensions and inspection" Part 3 "Inspection".
Subject content and scope of application
This standard specifies the dimensions and technical requirements of measuring rods for measuring the tooth width and tooth thickness of cylindrical spur involute splines. This standard is used to measure measuring rods for cylindrical spur involute splines with a module of 0.25 to 10 mm, a number of teeth of 10 to 100, and a standard pressure angle of 30°, 37.5° and 45°.
2 Reference standards
Preferred numbers and priority number systems
3 Measuring rod dimensions
3.1 The types and dimensions of measuring rods are shown in Figure 1 and Table 1. 3.2
When the measuring rod dimensions exceed the values ​​in Table 1, they can be selected according to R40 in GB321 standard. Type I
Approved by the State Administration of Technical Supervision on July 12, 1995 The rest
Implemented on May 1, 1996
Diameter of measuring rod DR
Basic size I
Limit deviation
GB/T 3478.9—1995
Table 1 Dimensions of measuring rods
Types of measuring rods
Diameter of measuring rod DR
Basic size
Limit deviation
GB/T3478.9—1995
Continued Table 1
Types of measuring rods
3.3 The tolerance of the diameter of the measuring rod shall comply with the principle of inclusion. 4 Technical requirementsWww.bzxZ.net
4.1 The measuring surface of the measuring rod shall not have defects such as rust, black spots and scratches that obviously affect the quality and appearance of use, and the two end surfaces shall not have rust and cracks.
4.2 The measuring rod can be made of wear-resistant materials such as alloy tool steel and carbon tool steel. 493
GB/T 3478.9—1995
4.3 The hardness of the measuring surface of the measuring rod should be 664~～825HV. 4.4 The measuring rod should be subjected to stability heat treatment.
5 Marking and packaging
5.1 The measuring rod should be marked with:
The registered trademark of the manufacturer;
b. The basic size of the measuring rod diameter.
When the diameter of the measuring rod is less than 16 mm, it is allowed to hang a label with the above mark. 5.2 The product box should be marked with
a. The product name, the manufacturer's name and registered trademark; b. The basic size of the measuring rod diameter.
5.3 The measuring rod should be treated with anti-rust treatment such as oiling before packaging and properly packaged. The product shall not be damaged during shipment due to poor packaging. 5.4 The product box should be accompanied by a product certificate. The product certificate should have the standard number, product serial number and production date of this standard, and the stamp of the inspection department.
Additional Notes:
This standard is proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the Machinery Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry, Chengdu Tool Research Institute, Changchun Automobile Research Institute, Harbin Dong'an Engine Factory and other units.
The main drafters of this standard are Zhan Zhaoping, Qiu Deyu, Tian Qizhu, Chang Baoyin, and Ming Cuixin. 494
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