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Detailed explanation of CNC machining process

2023/7/28 14:29:50 click:

CNC precision machining (Computer Numerical Control Machining) is a method of machining using computer-controlled numerically controlled machine tools, which is widely used in the manufacture of parts in various industries. It controls the machine tool to cut along the specified path through the pre-written processing program, so as to realize the processing of the workpiece.


The following editor will take you to briefly understand the process flow of CNC machining:


First, design and formulate the processing technology

Before CNC processing, it is first necessary to design the product and formulate the processing technology. According to the requirements and functions of the product, the engineer will use CAD software to carry out the engineering drawing of the product. According to the target process, the engineer will formulate a specific processing technology according to the shape, material and processing requirements of the product, including selecting appropriate cutting tools, parameters and paths .


Secondly, enter the process of writing the processing program


The processing program is the core of CNC processing, which includes the machine tool's action instructions, cutting parameters, paths and other information. Writing processing programs requires the use of CAM software to convert product design files into processing programs. When writing the processing program, it is necessary to consider the cutting performance of the material, the rationality of the process and other factors to ensure the efficiency and quality of the processing process


Then, machine set-up and tool set-up


Before NC machining, the workpiece needs to be clamped on the machine tool and suitable props should be selected for cutting. Machine tool clamping is the process of fixing the workpiece on the machine tool, which needs to consider the shape, size and processing requirements of the workpiece. Tool clamping is the process of installing the tool on the machine tool. It is necessary to select the appropriate tool type and specification and the correct installation method. The accuracy and stability of machine tool setup and tool setup have an important impact on machining accuracy and efficiency.


Next, the processing operation


After the machine setup and tool setup are complete, aluminium cnc machining operations can begin. The operator inputs the prepared machining program into the CNC machine tool controller, and then instructs the machine tool to cut according to the path and speed specified by the program through the controller. During the machining process, the operator needs to monitor the machining status and adjust cutting parameters and tools in time to ensure machining quality and efficiency.


Finally, process inspection and trimming


After the CNC machining is completed, the workpiece needs to be inspected and trimmed. Inspection can be carried out by measuring tools and equipment to detect the size, shape and surface roughness to verify whether the processed parts meet the requirements. Trimming is the process of trimming, grinding or polishing the workpiece to eliminate possible processing defects and improve the precision and surface quality of the workpiece.


In summary, the CNC machining process covers the design and development of machining processes, writing of machining programs, machine tool clamping and tool clamping, machining operations, and machining inspection and trimming. Each link requires accurate operation and strict control to ensure the efficiency of processing engineering and the quality of processed parts.