GB/T 16848-1997 Accuracy of double enveloping worm gearing with straight line generatrix
1 Scope
This standard specifies the error definition, code, accuracy grade, gear blank inspection and tolerance, backlash, and drawing indication of enveloping worm with straight line generatrix, worm wheel and their worm gear pairs.
This standard is applicable to the power enveloping worm with straight line generatrix transmission with a shaft angle of 90° and a center distance of 80−1,250 mm.
2 Definitions and codes
See Table 1 for the errors, as well as the definitions and codes of backlash of the enveloping worm with straight line generatrix, worm wheel and worm gear pairs in this standard.
Table 1 Errors, as well as the definitions and codes of backlash of the worm, worm wheel and worm gear pairs
Foreword i
1 Scope
2 Definitions and codes
3 Accuracy grade
4 Requirements for gear blank
5 Inspection and tolerance of worm and worm wheel
6 Inspection and tolerance of worm gear pair
7 Requirements for backlash of worm gear pair
8 Drawing indication
Annex A (Informative) Tolerance of main base radius
Annex B (Informative) Gear blank tolerance of worm and worm wheel
