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Creating Cams

The steps to create a Cam can be explained using an example application. In this application, we can say that there is a rotary table with eight slots (360° / 8 = 45° division). Inside there is a component to be joined by ultrasonic welding. The welding tool is fed by a linear drive after the rotary table has rotated. After welding, the linear axis returns and the rotary table continues to rotate.

Work steps:

  • Rotary table turns 45° (duration: 400 ms).

  • The welding head is moved down by a vertical axis of 250 mm (duration: 200 ms).

  • Start welding (duration: 1200 ms).

  • The welding head is moved up by a vertical axis of 250 mm (duration: 200 ms).

A cycle time of 2000 ms results from total times.

The application is implemented by means of a virtual master axis that runs continuously (modulo). The end value of the axis is projected according to the cycle time of 2000 ms. The rotary table is achieved as a Cam (modulo; end value: 45°). The vertical axis is also achieved as a Cam (restricted; end value: 300 mm). The welding process is controlled by a tappet.