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针对整体结构件加工过程中存在的装夹难的问题,提出了一种利用磁粉颗粒传递夹持力的装夹方案。介绍了磁粉夹持系统夹持的基本原理,分析影响磁粉夹持系统夹持力大小的各种因素,确定了磁粉颗粒的摩擦系数、磁感应强度和磁粉填充区域为主要的影响因素。通过实验测定了不同目数的磁粉颗粒的摩擦系数,并利用实验平台测定了电流大小、磁粉填充高度与夹持力大小的关系,根据实验数据确定了磁粉颗粒的目数,得出了磁粉填充高度、电流大小与垂直和水平夹持力的函数关系。
Aiming at the problem of difficult fixture during the machining of the whole structural parts, a clamping scheme that uses the magnetic powder particles to transmit the clamping force is proposed. The paper introduces the basic principle of the clamping of the magnetic powder clamping system, analyzes various factors that affect the clamping force of the magnetic clamping system, and determines the friction coefficient, the magnetic flux density and the magnetic powder filling area as the main influential factors. The friction coefficients of magnetic particles with different mesh numbers were determined experimentally. The relationship between the current, the filling height of magnetic particles and the holding force was determined by the experimental platform. The mesh numbers of the magnetic particles were determined according to the experimental data. Height, current size as a function of vertical and horizontal clamping force.