Relate two Mates with revolute degrees of freedom. The relation creates a constant ratio of angular rotation between the Mates. If either mated part is moved, the other will move rotationally.

A gear relation creates a constant rotational ratio between two revolute Mates that rotate your gears.

To create a gear relation, select the gear relation command from the toolbar, then select the two revolute Mates associated with your gears. Enter a ratio between the two gears.

Click the checkmark to accept the gear relation.

To add the Gear relation:

  1. Click Gear Relation feature icon.

    Gear relation dialog

  2. In the dialog, confirm that Gear is selected.
  3. Select two Mates (with one degree of rotational freedom) in the main list of Mate features (or in the list of features in any of the current subassemblies). Acceptable Mates are: Revolute, Cylindrical, Planar, and Parallel. (Revolute Mates have the exact degrees of freedom required by Gear.)

    Parts/subassemblies using Cylindrical, Planar, and Parallel mates with the Gear relation require additional Mates to keep them in place.

  4. Enter the desired gear ratio.
  5. Optionally check the box to reverse the direction.

Once you select a degree of freedom for the relation, you are unable to change it unless you delete the Mate from the dialog, change the Mate type, or delete the Mate and start over.

Steps

To add the Gear relation:

  1. Tap Gear Relation feature icon.

    Gear relation dialog

  2. In the dialog, confirm that Gear is select in the Relation type field.
  3. Select two Mates (with one degree of rotational freedom) in the main list of Mate features (or in the list of features in any of the current subassemblies). Acceptable Mates are: Revolute, Cylindrical, Planar, and Parallel. (Revolute Mates have the exact degrees of freedom required by Gear.)

    Parts/subassemblies using Cylindrical, Planar, and Parallel mates with the Gear relation require additional Mates to keep them in place.

  4. Enter the desired gear ratio.
  5. Optionally tap the slider to reverse the direction.
  6. Tap the checkmark.

Once you select a degree of freedom for the relation, you are unable to change it unless you delete the Mate from the dialog, change the Mate type, or delete the Mate and start over.

Steps

To add the Rack and pinion relation:

  1. Tap Gear Relation feature icon.

    Gear relation dialog

  2. In the dialog, confirm that Gear is select in the Relation type field.

  3. Select two Mates (with one degree of rotational freedom) in the main list of Mate features (or in the list of features in any of the current subassemblies). Acceptable Mates are: Revolute, Cylindrical, Planar, and Parallel. (Revolute Mates have the exact degrees of freedom required by Gear.)

    Parts/subassemblies using Cylindrical, Planar, and Parallel mates with the Gear relation require additional Mates to keep them in place.

  4. Enter the desired gear ratio.

  5. Optionally tap the slider to reverse the direction.

  6. Tap the checkmark.

Once you select a degree of freedom for the relation, you are unable to change it unless you delete the Mate from the dialog, change the Mate type, or delete the Mate and start over.