Friends who are engaged in the numerical control industry must be familiar with programming. The quality of programming directly affects the quality and efficiency of workpiece processing. As a high-precision machining center, CNC Machining Center v1165 cannot be sloppy in programming.
First of all, understand a problem, that is, the function of writing NC programs-why do you want to write NC programs?
The machining center is an automated machine tool. During processing, according to the requirements of the workpiece pattern and the processing process, the amount of movement, speed and sequence of actions, spindle speed, spindle rotation direction, tool head clamping, tool head loosening and cooling of the used tools and various components are operated. The program list is compiled in the form of the specified numerical control code and input into the special computer of the machine tool. Then, the numerical control system compiles, calculates, and logically processes the input instructions, outputs various signals and instructions, and controls each part to process various workpieces with different shapes according to the prescribed displacement and sequential actions. Therefore, the programming of the program has a great influence on the effectiveness of CNC machine tools. It can also be said that it will be difficult to write a machining center without a CNC program.
What does a CNC program look like?
The CNC machine tool must input the instruction codes representing various functions into the CNC device in the form of a program, which is processed by the CNC device, and then sends out pulse signals to control the operation of the various moving parts of the CNC machine tool, so as to complete the processing of the parts.
After determining the processing technology, you must understand before programming:
1. Workpiece clamping method;
2. The size of the workpiece blank: in order to determine the processing range or whether multiple clamping is required;
3. The material of the workpiece: in order to choose which tool to use for processing;
4. What are the tools in stock: Avoid modifying the program during processing because there is no such tool. If you must use this tool, you can prepare it in advance.
The main points of programming are-design the knife path
The path of the tool is the path and direction of the tool relative to the workpiece in the index control process. The reasonable choice of the processing route is very important, because it is closely related to the processing accuracy and surface quality of the parts. When determining the path of the knife, the following points are mainly considered:
1. Ensure the machining accuracy requirements of the parts.
2. Convenient for numerical calculation and reduce programming workload.
3. Seek the shortest processing route, reduce the empty tool time to improve processing efficiency.
4. Try to reduce the number of blocks.
5. To ensure the roughness requirements of the workpiece contour surface after processing, the final contour should be processed continuously in the last pass.
6. The path of the tool's advance and retreat (cut-in and cut-out) should also be carefully considered, in order to minimize stopping at the contour (a sudden change in cutting force causes elastic deformation) and leaving tool marks, and avoid vertical downward on the contour surface Knife and scratch the workpiece.
