Machine Tool Attachments

Technical Q&A Q&A

NC Rotary Tables

Explanation of Technical Terms

What is indexing accuracy?

After indexing one rotation of the table equally according to the tooth number of the worm gear, obtain the difference between the theoretical turning angle and the measured angle. The indexing accuracy is the sum of the maximum difference in positive values and that in negative values (absolute values).

What are clamp torque?

Clamp torque is only the force of the clamping mechanism, which does not include force caused by self-locking of a worm gear. The clamp torque shown in the catalog is the figure obtained when the rated pressure (3.5 MPa for hydraulic pressure, and 0.49 MPa for pneumatic pressure) is supplied to the working fl uid. When a larger clamp torque is required, increase the pressure gradually up to the maximum allowable pressure (4.9 MPa for hydraulic pressure, 0.69 MPa for pneumatic pressure) to increase the clamp torque.

What is worm gear strength?

Worm gear strength is the allowable wheel torque when table rpm is 1 min-1. The allowable torque for the worm wheel is calculated according to the standards stipulated by the Japan Gear Manufactures Association.

Contact Us

For catalogs, drawings, and any inquiries, contact us by contact form.