What is the main workflow of CNC machining?


Author: MULAN -Plastic Molding Manufacturer

General CNC machining usually refers to precision machining, CNC machining lathes, CNC machining milling machines, CNC machining boring and milling machines, etc. 1. CNC lathe feed processing route refers to the path that the turning tool moves from the tool setting point (or the fixed origin of the machine tool) until it returns to this point and ends the processing program, including the path of cutting processing and cutting in and out of the tool, etc. Non-cutting empty travel path. 2. The feed route of finishing machining is basically carried out sequentially along the contour of its parts. The focus of determining the feed route is to determine the feed route of rough machining and empty stroke.

3. In CNC lathe processing, the determination of the processing route generally follows the following principles, which should ensure the accuracy and surface roughness of the processed workpiece. 4. Make the processing route the shortest, reduce the idle travel time, improve the processing efficiency, simplify the workload of numerical calculation as much as possible, and simplify the processing program. For some reusable programs, subroutines should be used. 5. CNC index control machine tools are programmed and controlled by CNC machining language, usually G code.

The CNC machining G code language tells the CNC machine tool which Cartesian position coordinates to use, and controls the tool feed speed and spindle speed, as well as tool changer, coolant and other functions. 1. After receiving the program sheet, each operator must clearly see the name, number, material, length, width, and height of the workpiece blank, the clamping method of the workpiece, the placement direction of the workpiece, etc. marked in the program. 2. Before placing the workpiece, clean the burrs around the workpiece for fine materials before going on the machine to calibrate the meter. 3. Drag the X, Y, Z respectively for the meter calibration. For the levelness of the three directions, the error should be controlled within 2 wires. After the calibration table is divided, it must be checked again to confirm that it is correct before the mechanical plant can be input into the reference value. 4. Calipers must be used to clamp the tool The measuring tool is guaranteed to be accurate. For the flying knives used for finishing (30R5, 20R5, 20R0.8, 16R0.8, 12R0.8), use the edge-finding method to measure the diameter of the tool. When using 1~10MM knives for finishing, the meter error must be recorded. Within 1~2 wires 5, before transmitting each program to the machine tool for processing, use relevant software to check whether the tool path, tool size, and tool length are consistent with the program, and then transmit and process after confirmation. For each finishing program, the spindle should be warmed up at high speed for 10-15 minutes before starting machining. 6. When starting machining and lowering the tool, check whether there is any irrelevant data in G60. If so, it must be cleaned before proceeding. During processing, when the tool is about to cut into the workpiece, you should check whether the residual value is consistent with the height of the lower knife before allowing the tool to cut into the workpiece. Observe the processing status of the tool, if the blade is found to be damaged, it should be replaced in time, when it is found that the processing force is too large, stop and contact the programmer to change the program. 8. Ensure a reasonable match between the tool speed and the feed rate of the machine tool during processing. 9. When finishing, you must first observe whether the surface of the workpiece is smooth enough before continuing to process. 10. After the processing is completed, you should know the programming After each program sheet is completed, the total working hours and personal signature should be recorded.

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