Patent ID: 7905692

Claim:
A processing machine with a reciprocation device, wherein the processing machine comprises at least one angle adjusting mechanism, the reciprocation device is configured to take an arbitrary angular position by means of the at least one angle adjusting mechanism, and the processing of a workpiece is carried out by combining movements caused by a drive of said at least one angle adjusting mechanism of the processing machine and a drive of the reciprocation device, and wherein said reciprocation device comprises a base, a guide, a slide, and a weight canceling mechanism for giving to the guide a force for canceling the weight of the guide, said base is fixed to the at least one angle adjusting mechanism, said guide is supported on the slide through a bearing, said slide has a cutting tool and a cutting tool mechanism, is lighter in weight than said guide, is supported on the guide through the bearing, and is driven by the reciprocation device drive so as to be moved in an axial direction opposite an axial direction in which the guide is moved by the reciprocation device drive with respect to the base.