钢球精密研磨机理及研球工艺研究

发布时间：2018-03-03 12:34

本文选题：研磨　切入点：轨迹　出处：《河北工程大学》2014年硕士论文　论文类型：学位论文

【摘要】：球轴承是众多领域（如汽车、军工和航天等）中机械装备的重要基础件，而钢球是球轴承的关键零件。优质的球轴承应具备低振动、长寿命以及高可靠性等性能，要实现这些性能，需使球轴承各组成部件（外圈、内圈、保持架和滚动体）全部有较高的加工精度，但钢球的影响最为突出。随着轴承行业的快速发展，对钢球精度的要求也在逐步提高。研磨是钢球加工的最后一道工序，直接决定着钢球表面的最后质量和精度。本文主要从磨粒损耗、切削轨迹、力学模型、运动规律、动力学分析和优化等几个方面对钢球精密研磨机理及研球工艺进行研究。在分析钢球研磨机理时，对三个阶段的磨削特点分别进行了对比；为了能够提高钢球表面的研磨质量，对磨粒切削钢球表面的轨迹进行分析，获得了切坑重叠的方法，并通过磨粒与钢球之间受力情况，建立起研磨力学去除模型。为对运动钢球进行深入地研究，建立三接触点的运动方程，并揭示其运动规律；同时对单颗钢球进行两个沟槽面方向的动力学分析，有效地防止钢球在研磨盘中发生打滑、碰撞现象。最后，针对钢球的研磨功率，，给出了计算公式，并确定其影响参数，为降低经济成本提供了理论参考。通过本文的研究，可以提高钢球研磨的精度和效率，从而为节约成本、降低球轴承噪声、延长使用寿命、增强可靠性等方面奠定了良好基础。
[Abstract]:Ball bearing is an important part of mechanical equipment in many fields (such as automobile, military industry and spaceflight etc.) and steel ball is the key part of ball bearing. High quality ball bearing should have low vibration, long life and high reliability, etc. To realize these properties, all components of ball bearing (outer ring, inner ring, cage and rolling body) need to have high machining accuracy, but the influence of steel ball is the most prominent. With the rapid development of bearing industry, Grinding is the last working procedure of steel ball processing, which directly determines the final quality and precision of steel ball surface. In this paper, the wear loss, cutting path, mechanical model and motion law of steel ball surface are mainly discussed in terms of wear loss, cutting path, mechanical model and motion law. The dynamic analysis and optimization of the ball precision grinding mechanism and ball grinding process were studied. In order to improve the grinding quality of steel ball surface, the track of abrasive grain cutting steel ball surface is analyzed, and the method of pit cutting overlap is obtained, in order to improve the grinding quality of steel ball surface, the grinding characteristics of three stages are compared respectively when analyzing the grinding mechanism of steel ball. In order to deeply study the moving steel ball, the motion equation of the three contact points is established and its motion law is revealed by establishing the model of grinding mechanics removal through the force between the abrasive particle and the steel ball. At the same time, the dynamics analysis of two grooves on a single ball is carried out to prevent the ball from sliding and colliding in the grinding disk. Finally, according to the grinding power of the ball, the calculation formula is given, and the influence parameters are determined. It provides a theoretical reference for reducing economic cost. Through the research in this paper, the precision and efficiency of steel ball grinding can be improved, which lays a good foundation for saving cost, reducing noise of ball bearings, prolonging service life and enhancing reliability.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH133.33;TG580.68

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