论文部分内容阅读
图1所示的工件为某矿山机械关键零件铰接梁,该工件的对称位置有4组孔,每组孔的形位精度及尺寸精度均要求较高,因此加工时有一定难度。在采取常规镗削方法加工上述每组孔时,如果采用调头加工的办法,由于工件校正、机床回转精度等因素的影响,很难保证每组孔的尺寸和位置精度,且加工效率低,所以,应采用不调头的方法加工上述各孔。由于工件尺寸
The workpiece shown in FIG. 1 is an articulated beam of a key part of a mining machine. The symmetrical position of the workpiece has four holes, and the shape and the dimensional accuracy of each hole are required to be high. Therefore, it is difficult to process. When adopting the conventional boring method to process each group of holes, if the method of turning head machining is adopted, it is difficult to guarantee the size and position accuracy of each hole and the processing efficiency is low due to the influence of workpiece correction and machine slewing accuracy , The above-mentioned holes should be machined without turning the head. Due to the size of the workpiece