PROBLEM TO BE SOLVED: To simplify a displacement mechanism of a vice, and reduce the cost thereof.;SOLUTION: In a work machining device comprising a fixed vice 14 provided on a pass line PL, an upstream movable vice 16 and a downstream work machining means (18), the movable vice comprises a slide base 36 which is supported by a guide bar 42 and advanced/retracted to/from the fixed vice, a fixed jaw 28 which is fitted to the slide base in a displaceable manner with a second side reference surface 28a and a second bottom reference surface 28b abutted on a work 12, a second movable jaw 30 which is disposed on the second fixed jaw and advanced/retracted to/from the second side reference surface, a first displacing means 38 which is interposed between the slide base and the second fixed jaw and energized when the movable vice is advanced to outwardly displace both second reference surfaces to both first reference surfaces, and a second displacing means 40 which is energized when the movable vice is retracted to inwardly displace both second reference surfaces relative to both first reference surfaces.;COPYRIGHT: (C)2001,JPO
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