车削氧化锆工程陶瓷中刀具几何参数对刀具磨损的影响

为研究刀具几何参数对车削可加工陶瓷的刀具磨损影响,以氧化锆工程陶瓷为加工对象,以刀具的体积磨损量作为刀具在不同几何参数下磨损程度的衡量标准,通过YG6刀具的外圆车削实验,研究了刀具前角、后角以及刀尖圆弧半径对刀具磨损的影响.实验结果表明:刀具的磨损形式主要是黏着磨损,并伴有部分磨粒磨损;刀具体积磨损量随前角变大,先缓慢减小而后急剧增加;随后角变大,先急剧减小而后缓慢增加;随刀尖圆弧半径变大,逐渐减小.刀尖圆弧半径相对于前角和后角对刀具体积磨损的影响较小.

Influence of Tool Geometry Parameters on Tool Wear in Turning Zirconia Engineering Ceramics

Taking zirconia engineering ceramics as processing object, the volume wear of the tool is used as the standard to measure the wear degree of the tool under different geometric parameters. Through the external cylindrical turning experiment with YG6 tool, the effects of the rake angle, the back angle and the corner radius on the tool wear were analyzed in this paper. The experimental results show that the wear form of the tool is mainly adhesive wear and is accompanied by partial abrasive wear; the tool volume wear decreases slowly and then increases rapidly with the rise of rake angle, decreases sharply and then increases slowly with the rise of back angle, and decrease gradually with the rise of the corner radius.