| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a machine working device suitable for forming an engraved pattern face on a surface of a work-piece.SOLUTION: A machine working device 1 performs finishing work of an engraved pattern face P to be formed on a surface of a work-piece S by numerically controlling relative position setting and movement of a no-rotary engraving tool 2 and the engraved pattern face P. The engraving tool 2 has a blade tip part 20 having a tip 20a which is formed forwards at an acute angle, and a fitting part 21 which is so attached to a main shaft part 4 suspending from above that the main shaft part 4 and a central axis Ce of the engraving tool 2 are coincident with each other. The tip 20a is formed in a linear or circular arc shape from a tip center point 20aa to a tip end point 20ab which are so provided as to be positioned on the central axis Ce of the engraving tool 2.</p> |
