| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid-pressure actuator carrying out space saving of a device, avoiding damage of a shock absorber, and capable of carrying out service life elongation. SOLUTION: The shock absorber 19 is integrated with first and second driving pistons 17a, 17b reciprocating in first and second cylinder chambers 13a, 13b of the oscillating actuator 10. By this, a work W can be protected from impact by operating the shock absorber 19 in stroke ends of the driving pistons 17a, 17b. Since dead space of the driving piston is used, it can be hollowed while avoiding enlargement to carry out weight reduction and space saving, and damage of the shock absorber 19 can be positively avoided. Bending moment with respect to the driving pistons at impact absorption is suppressed to carry out service life elongation of the oscillating actuator 10. COPYRIGHT: (C)2008,JPO&INPIT
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