Sets parameters for design of a spur gear.
Access: | Ribbon: Design tab ![]() ![]() ![]() |
Defines the spur gear. | |
Design Output | |
Selects the type of geometry calculation. Depending on your selected design guide, edit fields in the Design tab enables. | |
If you know all spur gears parameters and you want to insert spur gears model, we recommend you select Center Distance or Total Unit Correction. These options enable you to insert many entry parameters. | |
Module and Number of Teeth | Calculates the module and number of teeth according to the center distance and other input parameters. |
Number of Teeth | Calculates the number of teeth according to the center distance and other input parameters. |
Center Distance | Calculates the center distance according to all other input parameters. |
Total Unit Correction | Calculates the unit summary correction according to the center distance and all other input parameters. |
Module | Calculates the module according to the center distance and all other input parameters. |
Desired Gear Ratio | Gear ratio is the ratio between the number of teeth in mating gears. |
Internal | Switch to internal gears transmission. |
Module | Module is the ratio of the pitch diameter to the number of teeth. Not available if you select Module and Number of Teeth or Module options in the Design Guide drop-down menu. If not available, calculate module based on other parameters. |
Diametral Pitch | Diametral Pitch is the ratio of the number of teeth to the number of inches in the pitch diameter in the plane of rotation, or the number of gear teeth to each inch of pitch diameter. Normal diametral pitch is the diametral pitch as calculated in the normal plane, or the diametral pitch divided by the cosine of the helix angle. |
Center Distance | Specifies the shortest distance between centers of gears. This option is disabled when you select Center Distance in the Design Guide drop-down menu - you want to calculate center distance based on other input parameters. |
Pressure Angle | Pressure angle is the angle between a tooth profile and a radial line at its pitch point. In involute teeth, the pressure angle is often described as the angle between the line of action and the line tangent to the pitch circled. |
Helix Angle | Helix angle is the angle that a helical gear tooth makes with the gear axis at the pitch circle. You can insert only positive values from 0 to 55. to change direction you must click Flip next to the edit field. |
Helix Angle Flip | Switches the helix direction. |
Unit Correction Distribution | Specifies the method to use for calculation of the teeth correction. |
Total Unit Correction | Specifies the sum of the gear unit corrections. Not available if you select Total Unit Correction option in the Design Guide drop-down menu. If not available, calculate total unit correction based on other parameters. |
Preview | Click to display the Preview dialog box with a schematic image of spur gears dimensions. |
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 you click Calculate.
The units of the results values can be changed. Double-click the specified value you want to change.
Following output parameters are displayed in the Results pane:
Displays the reports about calculation. To open Summary of Messages at the bottom of the Calculation and Design tabs, double-click the double line at the bottom of the tabs, or click the chevron at the bottom of the tabs.
When you specify the spur gear placement, select a cylindrical face and start plane. A Graphical preview of the designed spur gear displays in the Autodesk Inventor window. The preview changes according to changes made in Spur Gears Generator.