ROTATION TABLE DEVICE

摘要

A rotation table device includes a casing, a rotation member, a braking member, a brake disk, and a target braking member, and a pressure adjustment unit that maintains the pressure inside the casing so as to be higher than the atmospheric pressure by air supplied from a purge air supply port, wherein the braking member includes a communication portion formed as a groove or a hole causing an inner space of a contact surface of the brake disk to communicate with an outer space thereof.

主权项

1. A rotation table device comprising:
a casing; a rotation member rotatably supported by the casing; a clamping mechanism configured to prohibit the rotation of the rotation member; and a pressure adjustment unit configured to maintain the pressure inside the casing to be higher than the atmospheric pressure by air supplied from a purge air supply port and prevent the intrusion of a cutting fluid, a work attachment portion at one end of the rotation member, and,the clamping mechanism comprising:
a braking member configured to be operated in the axial direction of the rotation member by air or working oil; a brake disk installed not to be rotatable with respect to the rotation member; a target braking member fixed to the casing, and, the braking member comprising: a first communication portion formed as a groove or a hole that causes an inner space of a contact surface with respect to the brake disk to communicate with an outer space at the opposite side to the contact surface.