YG类硬质合金刀精车奥氏体不锈钢的刀具几何参数优化.doc

PAGE 2012 届本科毕业论文（设计） 论文题目：YG类硬质合金刀精车奥氏体不锈钢的刀具几何参数优化 学生姓名： 所在院系： 机电学院 所学专业： 机械设计制造及其自动化 导师姓名： 完成时间：2012年 5 月 10 日 PAGE \* MERGEFORMAT ii 摘 要 奥氏体不锈钢是常温下具有单相奥氏体组织的不锈钢。其组成成分中含铬、镍元素较多。奥氏体不锈钢的切削加工性能很差，所以其加工质量的提高难度很大。它在切削加工时, 存在较多的的因素促使刀具磨损, 如加工硬化、热传导率低等, 极易使刀具出现磨损现象。如崩刃、磨损等。因而, 奥氏体不锈钢属于一种较典型的难加工材料。在切削加工时, 必须合理选择刀具的品种和切削条件。因此在加工时要通过采取一些措施提高工件的加工质量。在此，主要从刀具的几何参数方面入手，利用正交实验法，通过实验优化刀具的几何参数，使得工件在精车时的加工质量提高。 关键词：奥氏体不锈钢，精车，正交实验法，刀具几何参数。 Abstract Austenitic stainless steel at room temperature is with single-phase austenitic stainless steel of the organization. Its composition containing cr, ni element more. Austenitic stainless steel cutting processing performance is very poor, so its processing the improvement of the quality of very difficult. When it was cutting processing, there are many factors to promote the tool wear, such as processing hardening, low heat conductivity, is extremely easy to make tools appear wear phenomenon. Such as collapse, wear of the blade. Therefore, austenitic stainless steel belongs to a kind of typical difficult-to-machine materials. In cutting processing, must be selecting cutters and the variety of cutting conditions. Therefore in the process can take some measures to improve the processing quality. In this, mainly from the aspects of geometric parameters of the cutting tool, using the orthogonal experiment method, through the experiment of optimizing tool geometric parameter, makes the car in the fine processing quality improved. Keywords：Austenitic stainless steel， Turning， Orthogonal experiment， Tool geometry 目 录 TOC \o 1-3 \h \z \u TOC \o 1-3 \h \z \u HYPERLINK \l _Toc324519478 1 绪论 PAGEREF _Toc324519478 \h 1 HYPERLINK \l _Toc324519479 1.1 奥氏体不锈钢的机械性能和加工特性 PAGEREF _Toc324519479 \h 1 HYPERLINK \l _Toc324519480 1.2 提高奥氏体不锈钢加工质量的方法 PAGEREF _Toc324519480 \h 1 HYPERLINK \l _Toc324519481 1.3 刀具材料的选择 PAGEREF _Toc324519481 \h 2 HYPERLINK \l _Toc324519482 1.4 对刀具几何参数的要求 PAGEREF _Toc3245194