| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a chuck device which can suppress looseness of a lever when a lever pressing mechanism is provided in the chuck device and realize stable reproduction precision.SOLUTION: Respective positions of a lever 103 are set to have the same position by a lever pressing mechanism 120 relative to shafts of a lever pin 113 so as not only to allow movement distance of respective top jaws 105 to be constant but also to allow precision of grasping centering of a work piece W to be further enhanced. Further a length of the lever pressing mechanism 120 can be maintained by restoring force of a spring even though the mechanism is consumed due to repeated use and deterioration over time so that a chuck device 100 can be used in a maintenance-free state for a long term.</p> |
