The stroke angle of the cam rotary indexer-indexing angle

The driving angle of the cam rotary indexer is also called the stroke angle, and the indexing angle may not be familiar with the cam rotary indexer. Here is a brief explanation for everyone.

The angle of the cam rotary indexer can be divided into the rotation angle of the output shaft and the rotation angle of the input shaft. For the output shaft, the rotation angle of the output shaft from the A station to the B station under the action of the input shaft, we call it The displacement angle of the output shaft, for example, for a 4-station cam rotary indexer, when the output shaft rotates one circle, the output shaft of the cam rotary indexer will move 4 times to reach 360 degrees in one circle, each displacement angle It is 90 degrees. Similarly, the displacement angle of the 2 station is 180 degrees, and the output shaft reaches one circle in the case of two rotational displacements.

The rotation displacement angle of the output shaft is what we call the drive angle of the input shaft rotation, because the rotary indexer is connected to the input shaft and the driving source, and the output shaft is driven to make intermittent movement through the rotation of the input shaft, and the output shaft is displaced and rotated. The process is the driving angle of the rotation of the input shaft. The movement of the input shaft is continuously rotating. When the output shaft is stopped, the rotation angle of the input shaft is called the angle of rest. According to the larger the drive angle, the rotary indexer operates The more stable the principle is, each rotation of the input shaft is the sum of the driving angle and the angle of repose. When the driving angle is 270 degrees, then the angle of repose is 90 degrees.

The selection of the driving angle and the angle of repose of the rotary indexer is inseparable from the requirements of the automation system for intermittent motion. In the case of high-speed operation, the driving angle will be relatively small, and in the case of heavy load and slow speed, it will be selected Larger driving angle.
For non-intermittent cam rotary indexers, servo or stepping drives are used to achieve any point stop. There is no driving angle and angle of repose. In this way, the cam rotary indexer is equivalent to a reducer.