| 摘要 |
PROBLEM TO BE SOLVED: To supply a device that gets no dust mixed with hydraulic oil, has little variation of clamping power due to change of oil temperature, has no oil leak from the clamping power transmission connection/separation part, and needs no strong pushing force to the clamping power transmission connection/separation part. SOLUTION: A screw pump unit is assembled in a hydraulic fixture assembly to drive a piston drive nut 16 of the screw pump unit by a sliding nut runner unit mounted on a fixed base 55. The sliding nut runner unit has a leg-mounted nut runner 28, a slide mechanism to shift the leg-mounted nut runner, and a socket 25 to connect a nut runner output shaft with the piston drive nut. COPYRIGHT: (C)2004,JPO
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