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Compumotor Division, North America:   Home > Support > Applications > Indexing Table

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Indexing Table

A system is required to plot the response of a sensitive detector that must receive equally from all directions. It is mounted on a rotary table that needs to be indexed in 3.6 degree increments, completing each index within one second. For set-up purposes, the table can be positioned manually at 5 rpm. The table incorporates a 90:1 worm drive.

Machine Objectives:

  • Repeatable indexing
  • Remote operation
  • Table speed of 5 rpm

Motion Control Requirements:

  • Jogging capability
  • Sequence select functionality
  • Capable of remote drive shutdown

Application Solution:

The maximum required shaft speed (450 rpm) is well within the capability of a stepper, which is an ideal choice in simple indexing applications. In this application, electrical noise has to be minimized to avoid interference with the detector. This can be done by using a low-EMI linear drive or by shutting down the drive after each index.

Application Solution:

The maximum required shaft speed (450 rpm) is well within the capability of a stepper, which is an ideal choice in simple indexing applications. Operating at a motor resolution of 400 steps/rev, the resolution at the table is a convenient 36,000 step/rev. In this application, it is important that electrical noise is minimized to avoid interference with the detector. Two possible solutions are to use a low-EMI linear drive or to shut down the drive after each index (with a stepper driving a 90:1 worm gear there is no risk of position loss during shutdown periods)

Product Solutions:


Parker Hannifin Corporation, Compumotor Division, 5500 Business Park Drive, Rohnert Park, CA 94928
707-584-7558 or 800-358-9068
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