Frequently asked questions (Spur Gears)
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What do I do when the Strength Validity fails?
A Strength Validity fail indicates that the design calculation with the inputs provided doesn't comply with the required performance. A change in the material properties or a change in the required performance of the gear should make the Strength Validity pass.
Note:A model cannot be created if the Strength Validity fails.
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Why is the Factors option in Calculated results often disabled?
The Factors option provides a window to review all the calculation factors used for a design of spur gearing. These factors are the result of calculation when the Spur gear is being designed for Bending and Contact stresses only. This option can be selected from the Strength Calculation Method area in the Input Conditions window.
Note:To access the Input Conditions window, select the options button from the Design Parameters tab.
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What is the difference between Simple Bending Stress and Bending and Contact Stress methods of Strength Calculation?
The Simple Bending Stress method of strength calculation validates the design for Bending stress only, while the Bending and Contact stress method validates the design for Bending and Pitting stresses with the consideration of several factors given by the standards.
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I made changes to some parameters in the Design Parameters tab. How to identify between modified and unmodified parameters?
An underline is placed when any parameter is modified. All underlined parameters indicate that they are modified and a calculation is required to update the results.
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I created a spur gear using QY CAD Engineering Reference. How do I edit the part to change some of the design parameters?
Editing a part created by QY CAD Engineering Reference is allowed only in the Assembly environment. Right-clicking the part provides an option to start Engineering Reference Spur Gear Module. You can modify the parameters and click the Update button to update the parameters of the component.
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