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无心外圆磨削是机械加工中一种高效率、高质量的磨削方法。早在轴承、汽车、拖拉机、机床工具、油泵油嘴、纺织机械、航空、电机和仪表制造业中得到了广泛的应用,现在又发展到用无心磨削精加工发动机中的凸轮轴、曲轴和电机主轴等大中型零件。它比多砂轮外圆磨削具有更高的质量(如圆度和同轴度)和效率,例如精磨6个轴颈的球墨铸铁凸轮轴,从铸件一次磨到成品,磨削余量为3～3.5mm,表面粗糙度达R_α0.4μm,单件时间为35s。在机械制造业中,凡具有批量生产的中、小型圆柱形的轴、孔或回转型的成形表面等零件,若采用外圆无心磨削,则产品质量会更高更可靠,效率也更高,较为经济合理。但上述效果的获得,无心磨床的调整技术非常关键。
Inadvertent cylindrical grinding is a high efficiency, high quality grinding method in machining. Has been widely used in bearings, automobiles, tractors, machine tools, oil nozzle, textile machinery, aviation, electrical and instrumentation manufacturing, but now has also been developed to use cautious grinding engine camshaft, crankshaft and motor Spindle and other large and medium-sized parts. It has higher quality (such as roundness and concentricity) and efficiency than multi-grinding wheel cylindrical grinding, such as grinding of 6 journal ductile iron camshaft, grinding from the casting to the finished product, the grinding margin 3 ~ 3.5mm, surface roughness R_α0.4μm, single piece of time is 35s. In the machinery manufacturing industry, mass production of medium and small cylindrical shaft, hole or rotary forming surface and other parts with cylindrical grinding centerless, the product quality will be more high and more reliable, more efficient , More economical and reasonable. However, the above effects are obtained, and the adjustment technique of the centerless grinding machine is very crucial.