垂直磨削中磨削参数对磨削痕迹分布的影响
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1.湖南科技大学机电工程学院,难加工材料高效精密加工湖南省重点实验室,湘潭 411201;2.中山联合光电科技股份有限公司,中山 528437

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TH162

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国家自然科学基金面上项目(52175401);湖南省研究生科研创新项目(QL20210239)


Influence of Grinding Parameters on Grinding Traces Distribution in Cross Grinding
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1.Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material,School of Mechanical Engineering, Hunan University of Science and Technology,Xiangtan 411201;2.Union Optech (Zhongshan) Technology Co., Ltd.,Zhongshan 528437

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    摘要:

    针对垂直磨削中磨削痕迹分布规律不明晰而使得磨削表面质量难以准确控制的问题,开展垂直磨削中磨削参数对磨削痕迹分布规律影响的研究。依据单颗磨粒磨削痕迹分布方程、仿真分析和探讨了砂轮转速、工件转速、进给速度、转速比和相移对磨削痕迹分布的影响,基于磨削参数对磨削痕迹分布和残留高度的影响,优选出了磨削痕迹分布相对合理的磨削参数组合,并进行磨削加工对比实验。结果表明,垂直磨削法中,磨削参数通过改变磨削痕迹的长度、间距、数量、位置关系和分布情况等影响磨削后工件的表面质量。其中,相移的大小会影响磨削痕迹的首尾相接与相互错开情况,直接决定着磨削纹理的形成与否,进而成为影响磨削后工件表面质量的关键因素;此外,尽管磨削参数中工件转速相差很小,但磨削痕迹分布状况会出现显著的差异,进而导致工件表面纹理和破碎情况显著不同及表面粗糙度Ra存在59~125 nm的差距。因此,基于磨削参数对磨削痕迹分布的影响,合理的匹配磨削加工参数可大幅提高工件表面质量。

    Abstract:

    Unclear distribution of grinding traces in cross grinding leads to difficult control of grinding surface quality. To identify grinding traces distribution pattern in response to process parameters, the influence of main grinding parameters on surface quality was investigated. According to the grinding traces distribution formula of single abrasive diamond,the influence of the wheel speed,workpiece speed,feed rate,speed ratio and phase shift on the grinding traces distribution was analyzed and discussed. Based on the influence of grinding parameters on grinding traces distribution and scallop height,optimal grinding parameters combination was selected,and comparative grinding experiments were carried out. The results show that changes of grinding parameters would affect traces length,spacing, quantity,position and distribution in cross grinding therefore influence the ground surface quality of the workpiece. In particular,the extend of phase shift affects position relationship of grinding traces from end-to-end to staggered and directly determines how the grinding marks are formed. It is one of the key factors affecting the ground surface quality.In addition,small difference of workpiece speed in grinding experiment generates significant variation in grinding traces distribution with distinguished surface texture and cracks on workpiece and discrepancy in surface roughness Ra values between 59 to 125 nm. Therefore,based on the influence of grinding parameters on the grinding traces distribution,the surface quality of workpiece could be greatly improved with reasonable matching of grinding process parameters.

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陈冰,李顺顺,罗良,邓朝晖,姚洪辉.垂直磨削中磨削参数对磨削痕迹分布的影响[J].宇航材料工艺,2022,52(6):33-43.

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  • 收稿日期:2021-09-26
  • 最后修改日期:2021-11-12
  • 录用日期:2021-12-03
  • 在线发布日期: 2022-12-23
  • 出版日期: 2022-12-30
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