Development of an oscillating grinding machine tool based on error analysis

Abstract

Oscillating grinding machine tool is the core equipment when machining crankshaft pin journal, which directly determines the final quality. This paper describes the development of an oscillating grinding machine tool based on error analysis. First, the error analysis of oscillating grinding for crankshaft pin journal is carried out, including the effect on machining accuracy caused by each error and corresponding error sensitivity. The results show that the tracking error of X-axis has the greatest influence on the grinding accuracy of pin journal, thus, the grinding carriage feed system is the critical component of an oscillating grinding machine tool, which should be given priority during the development process. Next, the development of an oscillating grinding machine tool is described. The whole structure is given, and the grinding carriage feed system is emphatically presented involving drive mode and assembly method. Other components of the oscillating grinding machine tool are also introduced. Finally, some grinding experiments are performed on the prototype, and the results show that all workpieces are qualified under different conditions, which verify the performance of the developed oscillating grinding machine tool.