Experimental Investigation of the Attainable Limiting Surface Roughness in the Ultra Precision Cutting of Various Kinds of Materials

各类材料超精密切削所能达到的极限表面粗糙度的实验研究

基本信息

批准号：
09650142
负责人：
YASUI Heiji
金额：
$ 0.51万
依托单位：
KUMAMOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

项目摘要

This research aims to investigate experimentally the attainable limiting surface smoothness in the ultra precision cutting of various kinds of materials. The relationship between the cutting condition and the surface roughness for face-turning of various kinds of materials is investigated experimentally. The turned surface is observed with micrograph and SEM.The surface roughness is measured with WYKO and AFM.The main results obtained are as follows :1) The ultra precision face-turned workpiece surface consists of the micro-defect such as micro-hole and scratch, the grain boundary of material, the feed transcription groove of bite edge radius and the micro-waviness due to the machine characteristics and circumstance conditions such as the room temperature, floor vibration and so on.2) Within the range of a critical feed rate, the surface roughness becomes small as the feed rate is small. Over the critical feed, on the other hand, the surface roughness converges into a terminal constant … More value.3) The cutting speed and depth of cut have little influence on the attainable limiting surface smoothness.4) The attainable limiting surface smoothness is dependent on the workpiece material and range from 9nm (Rmax) to 5nm (Rmax), excluding the micro-defect formed in Al-Mg alloy.5) The grain boundary step and micro-turbulence of bite edge shape is below 5nm and 2nm, respectively.6) In the limiting ultra-precision cutting of Ni-P amorphous material and gold, no and little formation of the grain boundary step is observed. As the result, the surface roughness of those materials becomes smaller than other materials such as Al alloy and OFHC copper.7) According to the observation for the extremely micro-area of 500nm square, the ultra-precision face-turned surface of various kinds of work pieces excluding the gold consists of a plenty of particles. In the gold, on the other hand, the cutting grooves are observed.8) In the ultra precision cutting of the stainless steel, the bite edge wear is confirmed to be aggressively even in the good cutting condition for it. Less

这项研究旨在通过实验研究各种材料的超精确切割中可实现的限制表面平滑度。实验研究了切割条件与表面粗糙度之间的关系，以实验研究各种材料的面部转变。 The turned surface is observed with micrograph and SEM.The surface roughness is measured with WYKO and AFM.The main results obtained are as follows :1) The ultra precision face-turned workplace surface consists of the micro-defect such as micro-hole and scratch, the grain boundary of material, the feed transcription groove of bite edge radius and the micro-waviness due to the machine characteristics and circumstances conditions such as the room temperature, floor vibration and so on.2）在临界进料速率的范围内，表面粗糙度变小，因为进料速率很小。 Over the critical feed, on the other hand, the surface roughness converges into a terminal constant … More value.3) The cutting speed and depth of cut have little influence on the attainable limiting surface smoothness.4) The attainable limiting surface smoothness is dependent on the workplace material and range from 9nm (Rmax) to 5nm (Rmax), excluding the micro-defect formed in Al-Mg alloy.5) The grain boundary step and咬合边缘形状的微扰动分别低于5nm和2nm。6）在限制Ni-P无定形材料和金的超精确切割中，观察到晶粒边界步骤的几乎没有形成。结果，这些材料的表面粗糙度比其他材料（例如Al yloy and ofHC铜）都小。7）根据对500nm平方的极度微区域的观察，超精确的脸部转弯表面的各种工作片，不包括很多颗粒，包括很多颗粒。另一方面，在黄金中，观察到切割凹槽。8）在不锈钢的超精确切割中，即使在良好的切割条件下，咬合边缘的磨损也会积极进取。