Worm Gear Sets

Worm gear sets include a worm and worm gear.

Worm Gears

Click the worm gear point object from the Machine Components tool set to insert a worm gear.

 

Parameter	Description
Circular Pitch	Enter the circular pitch
Number of Teeth	Enter the number of teeth
Pitch Diameter (Ref.)	Displays the pitch diameter of the gear, based on the pitch and number of teeth
Pressure Angle	Enter the pressure angle
Number of Starts (Worm)	Select the number of starts of the worm
Pitch Dia (Worm)	Specify the worm pitch diameter
Tooth Profile	Select the type of tooth profile
Face Width	Enter the width of the gear face
Draw Recess	Select Draw Recess to draw a recessed web, and specify the 2D parameters
Web Thickness	Enter the web thickness
Recess Diameter	Enter the recess diameter
Recess Corner Radius	Specify the recess corner radius
Recess Fillet Radius	Indicate the recess fillet radius
Draw Hub	Select to include a hub and then specify the 2D parameters
Hub Diameter	Enter the hub diameter
Hub Projection (Left / Right)	Specify the amount of projection for the hub on both the left and the right; a negative value indicates that the hub face is recessed
Hub Corner Radius	Enter the hub corner radius
Hub Fillet Radius	Enter the hub fillet radius
Draw Bore	Select to draw a bore and then specify the 2D parameters
Bore Diameter	Enter the bore diameter (2D and 3D)
Keyway	If a keyway is present, select the square, rectangular, or custom size; otherwise, select None. The square and rectangular selections apply the ASME-recommended size based on the bore diameter.
Width/Height	For custom keyway sizes, enter the width and height values of the keyway
Web Configuration	Select the gear configuration and then specify the 2D parameters, if any. When Holes are selected, their size can be specified as a percentage or diameter value.
Number	Indicate the number of holes or spokes for the gear (does not apply to Plain web configurations)
Size (10 - 100%)	For Holes (Percent) and Spokes web configurations, enter the percentage of the recess opening occupied by the holes or spokes
Center Distance	When Holes is selected for the web configuration, specify the distance between the hole centers
Hole Diameter	When Holes is selected for the web configuration, indicate the size of the holes
View	Select the 2D view
Show Center Lines	Select to draw the 2D gear with center lines

Worms

Click the worm point object from the Machine Components tool set to insert a worm.

 

Parameter	Description
Pitch Diameter	Enter the pitch diameter
Axial Pitch	Enter the axial pitch
Pressure Angle (deg.)	Enter the pressure angle in degrees
Number of Starts	Select the number of starts
Tooth Profile	Select the type of tooth profile
Face Width	Enter the width of the worm face
Draw Hub	Select to include a hub and then specify the parameters
Hub Diameter	Enter the hub diameter
Hub Projection (Left/Right)	Specify the amount of projection for the hub on both the left and the right; a negative value indicates that the hub face is recessed
Draw Bore	Select to draw a bore and then specify the parameters
Bore Diameter	Enter the bore diameter
Keyway	If a keyway is present, select the square, rectangular, or custom size; otherwise, select None. The square and rectangular selections apply the ASME-recommended size based on the bore diameter.
Width/Height	For custom keyway sizes, enter the width and height values of the keyway
View	Select the 2D view
Show Center Lines	Select to draw the 2D worm with center lines