JPS6265103U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a sectional view of a rotary chuck according to the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, FIG. 3 is another embodiment, and FIG. 4 is a prior art. 1...Rotating chuck, 2...Double acting cylinder, 6
...Annular recess, 6a...Bottom cylindrical surface, 7...Supply ring, 7a...Inner cylindrical surface, 6b, 6c, 7b
, 7c... End face, 13, 14... Pressure fluid port, 18... Cylinder chamber, 19, 20... Channel.

Claims (1)

[Scope of utility model registration request] A supply ring is loosely fitted into an annular recess on the outer periphery of the rotating body so as to be relatively rotatable, and a pair of pressure fluid ports are provided on this supply ring, and pressure is supplied from these pressure fluid ports to a double-acting cylinder that rotates integrally with the rotating body. In the pressurized fluid supply device configured to supply fluid, an annular flow path is formed on either the bottom cylindrical surface of the annular recess and the inner circumferential cylindrical surface of the supply ring opposing the bottom cylindrical surface of the pressure fluid port. communicate with one side, and
Concurrent annular grooves that are concentric with the axis of the rotating body are formed on either one of the end surfaces of the annular recess sandwiching the supply ring and the opposite end surfaces of the supply ring, so that the pressure fluid port The rotary body has one end of two passages communicating with each cylinder chamber of the double-acting cylinder opened to the annular passage and one of the annular grooves, respectively. Pressure fluid supply device to dynamic cylinder.