Spur Gears Component Generator dialog box - Calculation tab

This tab extends the Design tab. Calculates generator data based on selections in the Design tab.

Access:

Ribbon: Design tab Power Transmission panel Spur Gear and click the Calculation tab.

Method of Strength Calculation

Specifies the method of a strength calculation type for your calculation. The strength calculation dialog box opens when you click Factors at the bottom of the Calculation tab.

Note: The Factors dialog box is available for ANSI, ISO, DIN, and CSN calculations.

Loads

Specifies the loads and calculates the strength proportions which calculate forces, moments, and speeds from the specified power, number of revolutions, and gearing efficiency.

Efficiency

Efficiency is the torque ratio of a gear set divided by its gear ratio.

Material Values

Warning: Determines the strength parameters of material empirically and reflects the minimum values applicable for a group of materials. Although these values are close to the values obtained using measurement of particular materials, we recommend that you use parameters of material according to the material sheet or specifications of the producer for final calculations.
Material	Specifies material values you enter, or material you select from the Material Database.
	If a material is selected from the Material Database, its values are inserted automatically into the following five edit fields, and the edits fields are locked. To unlock the field, clear the check box.
Allowable Bending Stress	Specifies allowable bending stress.
Allowable Contact Stress	Specifies allowable contact stress.
Modulus of Elasticity	Modulus of elasticity (also called Young’s Module) is the ratio of unit stress to unit strain within the proportional limit of a material in tension or compression.
Poisson’s Ratio	Poisson’s Ratio is the ratio of lateral strain to longitudinal strain for a given material subjected to uniform longitudinal stresses within the proportional limit. The term is found in certain equations associated with strength of materials.
Heat Treatment	Specifies the type of treatment in a dialog box.

Inputs

Required Life

Click the arrow next to the edit field to select the values from a table.

Factors

Opens the Factors dialog box to specify Factors.

Note: The Factors dialog box is available for ANSI, ISO, DIN, and CSN calculation.

Accuracy

Opens the Accuracy dialog box to specify accuracy values.
Standard	Specifies the accuracy standard you select from the list.

(More)

Displays additional options for spur gear designate display the More Options area, click More in the right lower corner of the Calculation Tab.
Type of Load Calculation
Power, Speed Torque	Calculates the torque according to the power and speed.
Torque, Speed Power	Calculates the power according to the torque and speed.
Power, Torque Speed	Calculates the speed according to the power and torque.
Type of Strength Calculation
Check calculation	Performs a strength check calculation.
Material Design	Calculates the minimum material values that satisfy the strength condition of the current strength calculation.
Geometry Design	Design the (smallest) geometry according to the strength check.
Limit Values
Minimal Factor of Safety	Minimal required safety in contact and bending.

Results

To display the Results area on the right side of the Calculation and Design tabs, double-click the double line on the right or click the chevron.

The area displays the calculated values and the key strength check. Values are calculated when the Calculate command is pressed.

The units of the results values can be changed. Double-click the specified value you want to change.

Summary of Messages

Displays the reports about calculations. To open the Summary of Messages area at the bottom of the Calculation and Design tabs, double-click the double line at the bottom of tabs or click the chevron.

Menu Commands