形貌重构砂轮磨削试验研究

设计了一种金刚石纤维切削装置，用其对白刚玉砂轮进行断续飞切来加工出断续微沟槽，从而实现砂轮的表面形貌重构。采用原始砂轮及形貌重构砂轮分别进行GCr15淬硬轴承钢的常温干式、浇注式磨削的对比试验研究，探讨了形貌重构砂轮的磨削性能。试验结果表明：相较于原始砂轮，在相同的试验条件下形貌重构砂轮在磨削时其磨削力和磨削温度均可以显著降低。通过常温干式、浇注式润滑条件下的磨削对比试验验证了形貌重构砂轮可以更有效地将磨削液带入磨削区进行润滑冷却。

Grinding Experimental Study of Topography-reconstructing Grinding Wheels

In order to reconstruct topography of grinding wheels, a diamond fiber cutting device was designed to process intermittent micro-grooves on white corundum grinding wheel surfaces through intermittent fly-cutting method.The comparative experiments of normal temperature dry and pouring grinding of GCr15 hardened bearing steel were carried out using original wheels and topography-reconstructing grinding wheels.The effects of topography-reconstructing wheels on grinding performance were investigated.The experimental results show that compared with the original grinding wheel, either the grinding force or the grinding temperature of topography-reconstructing grinding wheel may be significantly reduced under the same conditions.Through the normal temperature dry and pouring grinding experiments, it is verified that the topography-reconstructing grinding wheel may effectively bring the grinding fluid into the grinding zones for lubrication and cooling.