For the option: | Do the following: |
|---|---|
Gear Element Name | Enter the name of the worm gear element. |
Construction Frame | Select the reference frame for creating gear. Gear rotation axis will be aligned with 'Z' of the reference frame. |
Symmetric | ■Yes ■No |
Property File | You can reference to available property file to specify input parameters for gear and force. |
Geometry Tab | |
No. of Teeth | Enter the number of teeth (threads) for the worm gear element and Worm Wheel. |
Module | Enter the value for module. |
Face Width | Enter the axial length of the Worm and Worm Wheel. |
Bore Radius | Enter the radius for the hole in the worm and wheel (only used for graphics). |
Hand of Helix | ■LH/RH Select if the Worm thread should be Left Hand (LH) or Right Hand (RH). |
Reference Diameter | Specify the reference diameter for the Worm element. |
Flank Form | Specify which flank type should be used to generate the Worm element. Available types are: ■ZA ■ZI ■ZN |
Pressure Angle | Enter a nominal pressure angle in current modelling Units (default value = 20.0 deg) expressed in the normal plane. The pressure angle is the angle between the line of action and the common tangent to the pitch circles at the pitch point is the pressure angle. |
Profile | Select how the involute profile should be described using the Standard Involute Profile parameters (Profile Shifting, Addendum Factor & Dedendum Factor) or if the parameters for the Modified Involute Profile (Tip Radius, Root Radius & Tooth Thickness) should be used. ■Standard ■Modified |
If Standard profile is selected, the following options will be displayed: | |
Profile Shift Coeff. | Enter a value for profile shift coefficient for the worm 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 = 1.2). The Dedendum Factor is used to calculate the Dedendum: Dedendum (Normal) = Module (Normal) * Dedendum Factor |
If Modified profile is selected, the following options will be displayed: | |
Tooth Thick | Enter a value for the tip diameter. |
Addendum R. | Enter a value for the root diameter. |
Deddendum R. | Enter a value for the tooth thickness at the reference circle in the normal plane. |
Geometry Settings | ■Profile Points Defines the number of points for the half tooth profile (the other half is mirrored). Default value is 10 points. The total number of points in the axial direction to create one thread will be: Thread Points = 2 * Number of Profile Points + 2 ■Circumference Point Multiplier (Worm Element only) Specifies the number of points around the circumference of the worm element, by using the following equation: (Thread Points - see above) Circumference Points = Circumference Point Multiplier * Thread Points * Teeth Number. |
Mass Properties Tab | |
Define Mass By | ■User Input If you do not want Adams View to calculate mass and inertia using a part's geometry, material type, or density, you can enter your own mass and moments of inertia. ■Geometry and Density You can change the material type used to calculate mass and inertia or simply specify the density of the part. ■Geometry and Material Type The geometry defines the volume and the material type defines the density. |
If you select User Input, the following options will be displayed: | |
Mass | Enter the mass of the gear part. |
The parts are located at the center of the gear, with the z-axis as the rotational axis. | |
Inertia | |
Ixx/Iyy/Izz | Enter the values that define the principal mass-inertia components of the gear part. |
Ixy/Izx/Iyz | Enter the values that define the deviational (cross-product) mass-inertia components of the gear part. |
If you select Geometry and Density, the following options will be displayed: | |
Density | Enter the density value. |
Inertia Geometry | ■ Exact Define mass by default 'density' option, Adams View uses the part's density and the volume of the geometry to calculate its mass and inertia. ■Approximate Approximate volume of the gear element is calculated based on addition of gear blank (cylinder or cone) dimension and involute thread volume. Bore volume is subtracted from this calculated volume. For cylindrical gears, the cylindrical gear blank dimension is considered whereas front and rear cone dimensions are considered in case of bevel and hypoid. Rack considers the base width and trapezoidal teeth volume. The approximately calculated volume is multiplied by density to calculate mass. Approximate method has significant gain in performance over material and exact-density options. However, the calculated values are slightly less than other methods. |
If you select Geometry and Material Type, the following options will be displayed: | |
Material Type | Enter the material type to be used inertia calculation. |
Connection Tab | |
Type | Select one of the following: ■Rotational ■Compliant ■Fixed ■None |
Rotational | The gear and attachment part is connected with revolute joint. |
Compliant | The gear and attachment part is connected with Adams Bushing. |
Fixed | The gear and attachment part is connected with fixed joint. |
None | No joint is created between gear and attachment part. You can create joint manually or put a bearing between gear and attachment part. |
Body | Enter the name of the body. |