Question

how to calculate module of gear​

Answer 1

16.1 Method for Determining the Specifications of a Spur Gear

Illustrated below are procedural steps to determine specifications of a spur gear.

Steps

Count how many teeth a sample spur gear has z =

Measure its tip diameter da =

Estimate an approximation of its module, assuming that it has an unshifted standard full depth tooth, using the equation:

step 3

Measure the span measurement of k and the span number of teeth. Also, measure the k –1. Then calculate the difference.

step 4

This difference represents pb = πm cos α

Select module m and pressure angle α from the table on the right.

m =

α =

Calculate the profile shift coefficient x based on the above m and pressure angle α and span measurement W.

x =

To find the calculation method, please see table 5.10 (No.2) on Page 542.

Table 16.1 Base Pitch pb

Base Pitch pb

NOTE.

This table deals with the pressure angle 20 deg and 14.5 deg only. There maybe cases where the degree of the pressure angle is different. Tooth profiles come with deep tooth depth or shallow tooth depth, other than a full tooth depth

Answer 2

Answer:

1. Count how many teeth a sample spur gear has z =

2. Measure its tip diameter da =

3. Estimate an approximation of its module, assuming that it has an unshifted standard full depth tooth, using the equation:

4. Measure the span measurement of k and the span number of teeth. ...

5. This difference represents pb = πm cos α

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