| 摘要 |
A vice jig that can accommodate a multiplicity of similarly sized and shaped work pieces provides by a hydraulic piston mechanism an even pressure on all such work pieces upon closure of the vice, in spite of variations in the specific sizes of those work pieces and of the cavities in which the work pieces are held. the invention can accommodate a number of work pieces that is fewer than the number of cavities provided therefor, without there occurring any ejection of any such pistons or of hydraulic fluid.
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