| 摘要 |
The unit consists of a barrel (10) a shaft (20) is mounted moving between two positions by the operation of a jack (1). A cranked lever (30), fixed to the barrel (10) by a pivot point (301), has its cranked end (32) joined to the end (22) of the sliding shaft (20) by a linkage system (40). The free end of the lever (30) has a screw adjuster (50) whose head clamps the work piece (P) to the worktable. The linkage system (40) pivots the lever (30) and locks it in position at the end of the stroke of the shaft.
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