GB/T 3478 consists of the following nine parts under the general title Straight cylindrical involute splines - Metric module, side fit:
——Part 1: Generalities;
——Part 2: 30° pressure angle dimensions tables;
——Part 3: 37.5° pressure angle dimensions tables;
——Part 4: 45° pressure angle dimensions tables;
——Part 5: Inspection;
——Part 6: 30° pressure angle M and W values;
——Part 7: 37.5° pressure angle M and W values;
——Part 8: 45° pressure angle M and W values;
——Part 9: Measuring pin.
This part is Part 9 of GB/T 3478.
1 Scope
This part of GB/T 3478 specifies the dimensions and technical requirements of measuring pin for measuring the space width and tooth thickness of straight cylindrical involute splines.
This part is applicable to the measuring pins for measuring the straight cylindrical involute splines with module of 0.25mm~10mm, number of teeth of 10~100, and standard pressure angles of 30°, 37.5° and 45°.
2 Normative references
The following documents contain provisions which, through reference in this part of GB/T 3478, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the normative document applies.
GB/T 321 Preferred numbers - Series of preferred numbers
3 Dimensions of measuring pin
3.1 See Figure 1 and Table 1 for the types and dimensions of measuring pins.
