CAJ | 학술논문

旨在探究刀尖圆弧半径、倒棱角度和后角对刀具寿命的影响情况，用国外 PcBN 复合片制作了切削 GCr15轴承钢用刀具。采用正交试验得出了 PcBN 刀具使用寿命影响因素的主次顺序分别为倒棱角度、刀尖圆弧半径和后角，并分析了产生此结果的原因。最后用得到的最优参数重新进行了切削试验，其切削结果与正交试验所得结果一致，确定了合理的刀具几何参数为刀尖圆弧半径0.8mm、倒棱角-15°、后角6°，此时 PcBN 刀具的寿命最高。
지재탐구도첨원호반경、도릉각도화후각대도구수명적영향정황，용국외 PcBN 복합편제작료절삭 GCr15축승강용도구。채용정교시험득출료 PcBN 도구사용수명영향인소적주차순서분별위도릉각도、도첨원호반경화후각，병분석료산생차결과적원인。최후용득도적최우삼수중신진행료절삭시험，기절삭결과여정교시험소득결과일치，학정료합리적도구궤하삼수위도첨원호반경0.8mm、도릉각-15°、후각6°，차시 PcBN 도구적수명최고。
The article aimed to explore the impact of corner radius,chamfer edge angle and relief angle on tool life,which was made by the foreign PcBN compact for cutting GCr15 bearing steel.The primary and secondary factor was chamfer edge angle,corner radius and relief respectively on the service life of the PcBN cutting tool with the orthogonal test,and the causes of this result was analyzed.Finally,the optimal parameters were obtained by re-cutting tests, the cutting results were consistent with the results of orthogonal experiment to determine a reasonable tool geometry parameters for the corner radius 0.8mm,chamfered edge angle-15°,relief angle 6°,in this case the PcBN cutting tool was supreme.