CNC milling V11 machining process
(1) Analysis of CNC milling processing technology
What do we want to process? ——Analyze the processing object.
How to process?-Determine the processing plan.
What tool to choose to complete the processing?-Determine the process equipment.
1. Analyze the sample drawing of the part and determine the blank
2. Determine the processing plan
(1) Determine the processing method.
(2) Determine the processing process and formulate the procedure.
3. Determine the process equipment
(1) Selection of tools.
(2) Design clamping and positioning methods.
4. Determine the machining process parameters and tool path
5. Develop process regulations
(2) CNC milling processing to compile CNC programs
Manual programming: The entire CNC programming process is completed manually. The requirements for programmers are high (not only must be familiar with CNC codes and programming rules, but also must have knowledge of machining technology and numerical calculation capabilities).
Computer-aided programming: The programmer only needs to send the processing information of the part to the computer in a simpler way according to the requirements of the part drawing and the provisions of an automatic programming system, and the computer automatically prepares the program, and the programming system can automatically print it out Procedure sheet and preparation control medium.
(3) CNC milling processing, input the program into the CNC system
The compiled numerical control program should be stored in the numerical control system in the form of a text file (ASCⅡ code) so that it can be called during processing. Generally, the editing function provided by the numerical control system can be used to input and store the program, or the communication function of the numerical control system can be used. Directly transfer the NC program file to the NC system.
(4) CNC milling processing verification and first piece trial cutting
Generally, the program must be checked before the formal processing. Usually, the CNC machining center can be used to check the correctness of the machine tool action and motion trajectory by idling, so as to check the correctness of the program.
(5) Principles of CNC milling processing
CNC machining (drilling and milling machining center) is to first determine the machining process and process parameters of the part according to the requirements of the part drawing, and then compile the part CNC machining program according to the programming manual, and then manually input or computer input to the CNC system of the CNC machine tool. In order to control the relative movement of the CNC machine tool and the workpiece, so as to complete the processing of the part.
(6) CNC milling parts
As shown in Figure 1-5, part processing is to first determine the processing process of the part according to the requirements of the part drawing, formulate the process card, and then compile the part numerical control processing program according to the programming requirements, and then enter the numerical control system to verify the correctness of the tool. Operate, and test the first piece, and then determine the processing of the part according to the result of the test cut, until the final processing into the finished part.
Necessary skills for CNC milling (turning and milling machining center):
1. Recognize the picture correctly
Be able to understand the three views and design the fixtures, tools and processing techniques required according to the drawings.
2. Familiar with the basic knowledge of machining
Familiar with the materials to be processed and the materials of the tools used.
3. Familiar with CNC technology, proficient in operating machining center machine tools
Different systems used by machine tools have different operating functions, and different operating panel designs.
