The role of gear shifting and the meshing description of shifted gears

The function of the gear shift and the meshing description of the shift gear are as follows, for reference and understanding.

The role of gear displacement:

1. The desired center distance can be obtained by displacement.

2. In a pairgearIn the case of a large gear ratio, negatively shift the large gear to make the tooth thickness thinner so that the life of the two gears is close.On the contrary, the pinion gear that is prone to wear is positively displaced to increase the tooth thickness.

3. It can prevent undercutting due to the small number of teeth during processing.

Meshing of shift gears:

The meshing of the modified gears is tangential meshing on the meshing pitch circle, which is different from the standard gears meshing under the tangent state of the indexing circle of each gear.

The pressure angle on the meshing pitch circle is called the meshing angle.The meshing angle is an important element when designing a displacement gear.The engagement angle is different from the pressure angle on the index circle (index circle pressure angle).