平面铣削的准备（Preparation of surface milling）.docVIP

平面铣削的准备（Preparation of surface milling） Preparation of surface milling Preface In order to ensure the smooth progress of the surface milling, there is a clear estimate of the whole process before the start of the milling process. For example, is the rough milling or milling? Will the machined surface be used as a benchmark? What is the change of surface roughness and dimensional accuracy in milling process? In addition, the cutting parameters of milling cutters need to be selected correctly. This paper analyzes the key points that need to be considered. The I. selection of milling cutters The price of the cutter is more expensive. A cutter with a diameter of 100mm may cost more than $600, so it should be carefully chosen so as to meet the needs of the actual machining. The First of all, consider the number of teeth when you select a milling cutter. For example, a coarse tooth mill with a diameter of 100mm has only 6 teeth, while a tooth cutter with a diameter of 100mm can have 8 teeth. The size of the pitch will determine the number of cutter teeth involved in the cutting process at the same time, which affects the smoothness of the cutting and the requirement of the cutting rate of the machine tool. Each milling machine manufacturer has its own rough, toothed, and face milling cutters. In In heavy duty roughing milling, too much cutting force causes chatter of the less rigid machine tools. This chatter results in chipping of cemented carbide blades, which shortens tool life. Selection of coarse teeth milling machine can reduce the power requirements of the machine. So, when the spindle hole specifications is small (such as R-8, 30#, 40#, can use the taper hole) coarse cutter for milling effectively. The The coarse tooth milling cutter is mostly used for rough machining because it has larger chip holding groove. If the chip groove is not large enough, it will cause the chip difficult or the friction between the chip and the workpiece and the workpiece will increase.