CNC lathe processing according to the program automatic processing, the degree of complexity of the shape of the parts, high processing accuracy, stable quality is the main difference between CNC machine tools and ordinary machine tools in production practice, but also the biggest advantage of CNC machining. And how to give full play to these advantages, YONTON’s operators need to master the programming knowledge and operation skills, but also a deep understanding of some key points of CNC machining, but also know the steps of CNC lathe machining like the back of their hand.
The steps of CNC lathe machining include the analysis of the parts diagram, first of all, we must correctly analyze the parts diagram, determine the processing position of the parts, thoroughly understand the technical requirements of the drawings, standardization, and strictly follow the processing process requirements, and each process of CNC machining should be carried out in strict accordance with the process division. Select CNC machine tools according to the shape of the part and processing content and scope, to determine the type of machine tool.
The clamping method of the workpiece directly affects the processing accuracy and efficiency of the product, more communication, more understanding, and the correct clamping of the workpiece in a due diligence attitude. There are many factors to consider when clamping for machining: first of all, positioning. The first thing to consider when positioning the workpiece is positioning accuracy. Both to meet the accuracy requirements, but also to consider the convenience of workpiece installation and clamping. Correct positioning, high positioning accuracy, no over-positioning, which is the role of positioning; clamping firm, is the role of clamping. These are two concepts and should not be confused. Of course, positioning and clamping are related and inseparable. Positioning is convenient and clamping is convenient. Likewise, positioning and clamping must not interfere with the tool. This is also a real problem. Therefore, when positioning a workpiece, consider the whole picture. The more comprehensive you think, the fewer mistakes you will make. Then there is the consideration of the effect of cutting forces. The more parts that can be machined at once as long as the cutting forces can be tolerated, the better, which is important for improving productivity in practice. At this stage, the machining sequence and steps are determined by the craftsman. As it involves the cooperation with other parts, the accuracy guarantee of different processing methods, the consideration of assembly requirements, and other issues. There is also the choice of tools that should meet the requirements of machining quality and efficiency, i.e. try to use large diameter tools, especially for rough machining, as soon as possible within the capacity.
After the programming is completed, a program trial run should be performed before machining on the CNC lathe to check whether the program is correct and then operate the machine for machining. In fact, the most direct and effective inspection method is the test cut inspection. However, in order to avoid excessive waste of material, test cutting can be carried out after the tool runs normally. During the test cut, the tool can be raised and the tool radius compensation value can be increased. This is because the previous work, which can be described as preparatory work, is the preparation for this step. It is important to remember that “unchecked programs should not be machined directly”.
