| 摘要 |
PURPOSE: A roller-workpiece fixing device for a machine tool is provided to safely couple a jig to a roller-workpiece because hitting a hammer wrench with a hammer is not necessary. CONSTITUTION: A roller-workpiece fixing device for a machine tool comprises a jig(110), a screw unit(120), and a hydraulic nut(200). The jig is mounted in a machining tool(10). The jig supports a roller-workpiece by fitting and loading along a longitudinal direction. The screw unit is formed in the central part of the jig. The hydraulic nut is joined to the screw nut. The hydraulic nut fixes the roller-workpiece by pressing. The hydraulic nut comprises a screwing unit, a pressing unit, and a nut unit. The screwing unit is joined to the screw unit. The pressing unit is joined to the outer circumference of the screwing unit. The pressing unit faces the roller-workpiece. The pressing unit comprises a groove forming an accommodation space accommodating a fluid between the pressing unit and screwing unit.
|
