Rotary indexing apparatus

摘要

A rotary indexing apparatus includes a base 1, a table 5 rotatably supported on the base, a drive unit 18 for rotating the table, and a clamp ring 8 fixed to the base to surround the table. Interference fit is established between the clamp ring 8 and the table 5 in order to clamp the table. Pressurised oil is supplied via passage 11 to surface 10 to deflect the clamp ring in order to unclamp the table.