磁性磨粒的制备技术研究

磁力研磨是一种新的研磨工艺,本文从磁力研磨加工过程中磁性磨粒的磨削机理出发,进一步论述了磁性磨粒的性能要求和制备技术,并通过实验尝试了磁性磨粒的制备.     

磁性磨粒的制备技术研究

磁力研磨是一种新的研磨工艺，本文从磁力研磨加工过程中磁性磨粒的磨削机理出发，进一步论述了磁性磨粒的性能要求和制备技术，并通过实验尝试了磁性磨粒的制备。     

Some Key Technologies of a New-type CNC Curve Grinding Machine

This paper presented a new-type CNC curve grinding machine, in order to conquer the disadvantages of conventional NC curve grinding machine and improve surface quality, dimensional accuracy and machining efficiency. The new-type grinder adopts some high and new technologies: ① the normal tracing device could make grinding wheel coincide with the normal direction of the machining points in work piece, and improve surface quality and dimensional accuracy; ② the digital image on-line recognition system could monitor machining process and compensate wheel wear in real time; ③ linear motor drive mechanism could realize the exact adjustment of the grinding head digitally and increase the machining efficiency. The math models of normal tracing and circular tolerance zone were presented. The experimental results show that the new-type CNC curve grinding machine equipped with the three devices mentioned above is easy to realize the precision grinding of any complex curve, and improve surface quality, dimensional accuracy and machining efficiency.     

磁性磨料对磁力研磨效果的影响

概述了磁性的特征及结构组成，并且用实验证明了混合磁性磨料中铁粉的直径参数和重量百分比参数对磁力研磨效果的影响，最终得出两者皆存在最佳值。     

磁性磨料对磁力研磨效果的影响

概述了磁性磨料的特性及结构组成,并且用实验证明了混合磁性磨料中铁粉的直径参数和重量百分比参数对磁力研磨效果的影响,最终得出两者皆存在最佳值.     

Temperature modeling in end grinding of coated workpieces

Grinding is an energy-intensive process in which the heat generated can cause various types of thermal damage to workpiece. Many theoretical, empirical or numerical models have been developed to predict grinding temperature. However, these models are not directly applicable for coated workpieces. Tools or other parts are coated with hard materials like tungsten carbide, ceramics or polycrystalline diamond to increase their surface hardness and prolong their life expectancy. In this paper, an empirical model is proposed to predict the maximum grinding temperature of coated workpieces. Experimental and numerical studies are carried out to validate the model. The results indicated that the new model is able to accurately predict grinding temperature.