砂带低速抛磨的可行性研究

Study on feasibility of abrasive belt low-speed grinding and polishing

针对生产实际中采用的砂带磨削速度普遍与工艺手册的推荐值存在较大差距的问题,以砂带粒度、磨削速度、每转进给量、工件材料四因素进行正交试验设计,确定了各个参数对零件抛光质量的影响。列举了注胚模具型芯零件砂带低速抛光的工程案例,对该零件进行了工艺分析,编制了机械加工工艺,重点介绍了成型面的砂带低速抛光工序。试验结果的极差分析表明,砂带粒度对表面粗糙度的影响最大,远大于其他三因素,然后依次为工件材料、磨削速度,影响最小的是每转进给量;工程实践结果证明,只要选用的砂带粒度合适,即使选用较低的磨削速度,也可以取得良好的抛光效果。

Aiming at the issue that it is of the actual existence of a wide gap between belt grinding speed used in the production and the recommended values of the manual process, taking the four factors, belt granularity, grinding speed, feed rate per revolution, workpiece material, the belt grinding orthogonal experiment was designed to determine the effect of each parameter on the parts polished quality. Examples of the injected embryos mold core parts low speed polishing projects were listed. The process analysis of the part was performed. The machining process was prepared. The low-speed polishing process of the molding surface belt was mainly introduced. Test results of range analysis show that, the belt granularity has the greatest effort on the surface roughness, much greater than the other three factors, followed by the workpiece material, grinding speed, and the smallest one is the feed per revolution. Project examples show that, if choosing proper belt granularity, even if using a lower grinding speed, it can also get a good polishing.