Export tooth shape dialog box

You can create actual tooth profile with respect to your specific defined backlash. The tooth profile is computed and exported to a sketch in a newly created part. The model is not associated with the spur gear set. The sketch also contains all of the important circles head, root, pitch and base.

Access:

Select already inserted spur gears set, right-click and select Export tooth shape.

Export

Select the Pinion or Gear geometry to export.

Specify desired precision as a distance deviation of the curves from the exact analytical profile. Tolerance specified affects noticeably how many spline points are generated.

Tool shift adjustment

You can adjust total tool shift with respect to the tool shift specified in the spur gear generator (tooth correction). The backlash specified for a given gear modifies the total tool shift that is required to achieve the desired geometry of the gear.

Desired Backlash

Select a type of the backlash. Depending on your selected option (Circular, Normal, Center, Angular), the appropriate edit field is available to enter the value of backlash.

For helical gears, normal and circular backlash is considered in a cross section with the normal direction of the tooth surface, such as normal backlash j nn and circular backlash j nt .

Specify the value of a desired backlash of a given gear, and modify the allowance from the ideal tooth profile. An invalid backlash highlights in red color. Range of the accepted backlash is from 0 to center backlash, which is approximately equal to module * unit tooth clearance.

Backlash tool shift

Backlash tool shift is computed as a result of Center backlash. It is an adjustment of the tool shift to achieve desired backlash.

Total tool shift

Represents a total tool shift from a normal position that incorporates nominal tool shift from calculation of gear set (tooth correction) as well as backlash tool shift. It determines exact position of the tool while the gear is manufactured.

Tip: See the Engineer's Handbook for backlash types and calculation formulas.