Patent ID: 6083084
Filing Date: 2000-07-04
Classification: B24B

Abstract:
A machining apparatus for machining a workpiece with a machining tool, comprising:a cold gas stream supply device including a cooling gas nozzle through which a cold gas stream having a temperature lower than an ambient temperature of the machining apparatus is supplied to a machining point for cooling at said machining point;a regulating wheel for rotating the workpiece;a work rest blade disposed between said regulating wheel and a grinding wheel as said machining tool, said work rest blade cooperating with said regulating wheel to support the workplace such that the workpiece is rotated by frictional contact with said regulating wheel, said grinding wheel being rotated in contact with the workpiece to grind the workpiece; anda work holder for holding the workpiece, said work holder being interposed between said regulating wheel and said grinding wheel and being located on one of opposite sides of the workpiece remote from said work rest blade, said cooling gas nozzle being provided on said work holder so that said cold gas stream is delivered from said cooling gas nozzle toward a grinding point as said machining point between said grinding wheel and the workpiece.