Vibratory Creep Feed Grinding

振动蠕动进给磨削

基本信息

批准号：
06650158
负责人：
WADA Tadahiro
金额：
$ 0.38万
依托单位：
Nara National Collage of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650158/
关键词：
Grinding Grinding Wheel Grinding Force Creep Feed Grinding Vibratory Feed Wheel Wear Grinding Fluid Burn Mark

项目摘要

In creep feed grinding, the maximum grain depth of cut becomes smaller, and so the cutting force on an effective edge becomes smaller. Then the loading and grazing often occurs on the working face of the grinding wheel. Because of a long arc of contact, the temperature at the grinding point rises with the increase of cutting force. Consequently thermal damage such as a burn mark is often made on a workpiece. In order to prevent the formation of the burn mark, vibratory creep feed grinding is proposed in this study. The workpiece was forced to vibrate in the table feed direction, that is to say, the frequency fis 30Hz and amplitude 2A is from 0.32 to 1.5mm. In order to clarify the effectiveness of the vibratory creep feed grinding, the grinding performance are experimentally investigated. The main results obtained are as follows : (1) The grinding power in the vibratory creep feed grinding becomes smaller than that in the conventional creep feed grinding. (2) Vibratory creep feed grindi … More ng is effective for the prevention of the burn mark in case of down-cut grinding of SKH4 and SUS304 under the wheel depth of cut 3mm and the table speed 0.179mm/s. However, the wheel wear in vibratory creep feed grinding becomes larger than that in the conventional creep feed grinding. (3) In the vibratory creep feed grinding of SKH4, the burn mark was prevented under the amplitude 2A of 1.0mm or 1.5mm. Moreover the radial wheel wear in the vibratory creep feed grinding of SHK4 with WA abrasive grinding wheel becomes smaller than that in the conventional creep feed grinding, (4) In down-cut vibratory creep feed grinding, more grinding fluid is supplied to the wheel-workpiece contact area than in the conventional creep feed grinding. However, in up-cut vibratory creep feed grinding, the amount of grinding fluid supplied does not increase. (5) In vibratory creep feed grinding, both radial wheel wear and vertical grinding force increase with the increase of the wheel depth of cut under the same metal removal rate. Less

在蠕动进给磨削中，最大切粒深度变小，因此有效刃上的切削力变小，然后由于接触弧长，在砂轮工作面上经常发生加载和擦伤。磨削点的温度随着切削力的增加而升高，在工件上经常会产生烧伤痕迹，为了防止烧伤痕迹的形成，本研究提出了振动蠕动进给磨削。工件被迫沿工作台进给方向振动，即频率为30Hz，振幅为2A，为0.32至1.5mm。为了阐明振动蠕动进给磨削的有效性，对磨削性能进行了实验研究。如下： (1) 振动蠕动进给磨削中的磨削功率比传统蠕动进给磨削中的磨削功率小。 (2) 振动蠕动进给磨削是有效的。在砂轮切深 3mm、工作台速度 0.179mm/s 下进行 SKH4 和 SUS304 顺切磨削时，可防止烧痕。但是，振动蠕动进给磨削中的砂轮磨损比普通砂轮磨损要大。 (3)SKH4的振动蠕动进给磨削中，在1.0mm或1.5mm的振幅2A下，防止了烧痕。采用WA磨料砂轮的SHK4振动蠕动进给磨削中砂轮径向磨损比传统蠕动进给磨削小，(4)在下切振动蠕动进给磨削中，更多的磨削液供给到砂轮与工件接触处(5) 在振动蠕动进给磨削中，两个径向在金属去除率相同的情况下，砂轮磨损和垂直磨削力随着砂轮切深的增加而增大。