The general WEDM in Guangdong machining factory is a typical two axis CNC machine tool, which can only be used for cutting various two-dimensional graphics, and its processing range is narrow. How to broaden the processing range of ordinary WEDM machine tools, so that it can better meet the objective production needs, has been the concern of the majority of WEDM users. Based on many years of practical work experience of Guangdong machining plant, this paper introduces the method of spiral machining on ordinary WEDM.
The realization of spiral motion
Spiral motion is composed of linear motion and rotary motion. In order to realize the spiral machining on the ordinary WEDM, Guangdong machining factory must not only use one axis (x axis or Y axis) of the WEDM to obtain the linear motion, but also use the other axis (Y axis or X axis) and necessary auxiliary devices to make the workpiece rotate. The steps are as follows:
1. According to the model of the stepping speed change device (including gearbox and stepping motor) used in the existing WEDM machine tool, directly go to the manufacturer to buy another set or make one by yourself. If it is made by ourselves, the main parameters (including the parameters of the stepping motor and the speed ratio of the gearbox) should be the same as the original, which can simplify the programming of the specific processing in the future. At the same time, pay attention to:
2. The meshing gears in the gearbox should be meshed without clearance. In order to ensure the machining accuracy, reverse clearance is absolutely not allowed. In order to eliminate the gear meshing clearance, Guangdong Machinery Factory usually adopts the structure of double thin gears superimposed and tension spring added in the middle.