For the option | Do the following |
|---|---|
Module (Normal Plane) | Enter a value for the module expressed in the normal plane (MN). The module is the pitch diameter divided by the number of teeth. |
Pressure Angle (Normal Plane) | Enter a nominal pressure angle (α) in current modelling Units (default value = 20.0 deg) expressed in the normal plane. The angle between the line of action and the common tangent to the pitch circles at the pitch point is the pressure angle. |
Axis of Rotation | Axis of Rotation of Gear 1 and Gear 2 can be one of the following: ■Orientation ■Pick (Marker) ■Global Z ■Global X ■Global Y |
GEAR PAIR | |
Name | Enter the name for Gear 1 and Gear 2. ■New ■Existing: Use the Select Gear options to load the existing gear. |
Center Location | Enter the coordinates or Pick (Markers, View location and so on.) |
No. of Teeth | Enter the number of teeth (Z) for Gear 1 and Gear 2. |
Gear Width | Enter the face width for Gear 1 and Gear 2 (only used for graphics). |
Bore Radius/Ring Radius | Enter the radius for the hole in the external gear or outer radius for internal gears. Note: Internal gear option is supported only for gear 2. |
Profile | Select how the involute profile should be described using the Standard Involute Profile parameters (Profile Shifting, Addendum Factor and Dedendum Factor) or if the parameters for the Modified Involute Profile (Tip Radius, Root Radius and Tooth Thickness) should be used. ■Standard ■Modified |
If you select Standard Profile, the following three options will be displayed: | |
Profile Shift Coeff. | Enter a value for the Profile Shift Coefficient (Addendum Modification Coefficient) for the gear (positive or negative value). Default value = 0.0. If this field is left blank, no profile shifting will be used. |
Addendum Factor | Enter a value for the Addendum Factor (default value = 1.0). The Addendum Factor is used to calculate the Addendum: Addendum (Normal) = Module (Normal) * Addendum Factor |
Dedendum Factor | Enter a value for the Dedendum Factor (default value = 1.25). The Dedendum Factor is used to calculate the Dedendum: Dedendum (Normal) = Module (Normal) * Dedendum Factor |
If you select Modified Profile, the following three options will be displayed: | |
Tooth Thickness (along the pitch circle) | Enter a value for the tooth thickness at the pitch circle in the transversal plane. Must be less than 10 times the value of module. For module = 2, tooth thickness needs to be <20, not 0.2. Tip: The Tooth Thickness for Internal Gear is the "Space Width". |
Tip (Outside) Radius | Enter a value for the tip radius. For an external gear this is the outermost radius, for an internal gear the innermost. The addendum circle, or outside circle, is the circle that contains the tips of the teeth, and its radius is the outside radius (tip radius). In the database navigator this will appear as 'tip_rad'. |
Root Radius | Enter a value for the root radius. The dedendum circle, or root circle, is the circle that contains the ends of the tooth spaces, and its radius is the root radius (foot radius). In the database navigator this will appear as 'foot_rad'. |
Geometry Settings | ■Profile points Defines the number of points for the half tooth profile (the other half is mirrored) through which a curve is fit. Note: Increasing this value may improve resolution of geometry especially for larger gear teeth but at the expense of increased time to create gear pair. ■Layers Defines the number of "layers" of the helical gear width should be divided into. This number should increase with increasing helix angle and gear width. For helix angle equal to 0 degrees (spur gear) this value will be automatically set to 2, otherwise the value specified in this field is used. Note: Increasing this value may improve resolution of geometry especially for larger gear teeth but at the expense of increased time to create gear pair. |