Clear the scope of CNC operator’s job responsibilities

1. After starting the machine, the three axes must be reset to zero, and the machine tool guide rail oil and cutting oil must be checked frequently for adequacy or other abnormalities. 2. Before putting the workpiece on the machine, you must clearly read the requirements of the program sheet and the size, reference direction, and placement of the workpiece. If there is any discrepancy or unclearness, you must communicate with the programmer and make sure it is clear before going on the machine. 3. When calibrating the workpiece, the flatness and verticality should be within the tolerance of 0.02MM. When touching the number of points, first read the programming program sheet clearly, whether it is to take the number in the middle or to take the number from one side. Check it more than once to avoid similar processing errors. The problem is that the tool calibration must be accurate and the value must be set after the tool calibration. 4. Before running the program, check whether the size and type of the tool in the program match the tool written on the program sheet. If there is any discrepancy, feedback to the programmer for processing. 5． When roughing the workpiece, the workpiece must not be far away from the machine tool. After the roughing is completed, the machine tool must be cleaned, and the tool must be polished after calibration and inspection. Knives or blades must be replaced when worn. (For the light knife, the tool handle must match the error of the tool to ensure that the error is between 0.01 and 0.03MM. If the error is large, ask a programmer to change it in time to avoid rework or overcutting caused by the accuracy error of the part.) 6. During processing, the next processing tool and the next processing workpiece must be prepared. The tool must be clamped to prevent it from falling out. The tool should be installed as short as possible. If the tool is installed long, the knife will flick out, swing greatly, the knife will break easily, and the parts will be easily overcut. 7． When processing electrodes, you must check whether the electrode number corresponds to the processing formula. (Be sure to read clearly the markings and roughness/precision on the bottom of the electrode, or write them in a visible place on the electrode with a colored pen. You should also check them when you get off the machine to avoid mistakes) 8. After the workpiece is processed, the processing dimensions, appearance, etc. must be detected and recorded according to the quality inspection content. The steel material must be measured when sweeping the surface. The scanning must be accurate. Only parts that are qualified can be removed from the machine. Especially parts processed externally must be removed from the machine. Finally, be sure to clean up the batches and the like to avoid complaints from suppliers. 9． If you have any problems or discover problems during operation, you must report them to the programmer or superior supervisor in a timely manner, and do not make your own decisions. 10． All lost and damaged tools, workpieces or cutters must be kept, and the operator must write down the cause of the error (such as under what circumstances the tool broke, whether it was worn or broken by excessive margin, and provide a good solution Give it to the programmer to avoid

a similar situation happening next time) and write a scrap form, which will be signed and approved by the supervisor, and then handed over to the warehouse for safekeeping. 11. Workpieces, tools or cutting tools must be neatly placed in designated locations and must not be placed randomly. 12． The shift handover must be clearly explained and the handover records must be kept. The machine head table must be accurately filled in and the processing hours must be counted. 13． Clean the machine tool and work area 10 minutes before leaving get off work every day, perform machine tool maintenance 30 minutes before leaving get off work every Saturday, and perform thorough maintenance on the inside of the machine tool every three months. 2. CNC machining quality issues 1. Use the knife reasonably. When processing steel and copper materials, the use of bare knives must be strictly distinguished. For steel materials, use knives made of gong steel, and for gong and copper materials, use knives made of gong knives. Because the prices of the knives are different, tools with more wear cannot be used with bare knives. In this way It will seriously affect the quality of the workpiece (operators should pay attention to this). The margin of the light knife should be reasonable, which will improve the smoothness of the workpiece and the service life of the tool. (Pay attention to this when programming) 2. Before processing, use a calibration meter to check whether the tool swing is within the allowable tolerance range. The tool head and locking tip must be blown clean with an air gun or wiped with a cloth before processing. Dirty dirt has a certain impact on the accuracy and quality of workpieces. (The inner surface of the car head should also be wiped clean frequently) 3. When clamping, pay attention to see whether the name and model of the workpiece and the program sheet are the same, whether the material size matches, whether the clamping height is high enough, and use a caliper to count. 4. The program sheet must be consistent with the direction of the reference angle marked by the mold master, and then check whether it is correct with the 3D drawing. Especially for workpieces that have been drilled for water transportation, be sure to see clearly whether the 3D drawing and the workpiece are for water transportation. If there is anything unclear, please promptly report it back to the programmer or ask a fitter master to check the 2D drawings to see if the 2D and 3D reference angles are consistent. 5. The program list must be standardized, including the model number, name, program name, processing content, tool size, feed amount, especially the safe length of the tool clamping, the reserved margin for each program, and the light knife, which must be clearly stated. Clearly, the place where the R surface and the flat surface should be connected should be marked on the program sheet. The operator should increase the processing by 0.02~0.05MM before processing. After a few cuts, stop to see if the connection is smooth and touch it with your hands. Whether the gong is raised or not, if not, then lower the gong. 6. There must be a 2D or 3D figure of the doll on the program sheet, and the six-sided data of "X length, Y width, Z height" must be marked. If there is a plane, the "Z" value must be marked, so that the operator can easily check whether the data is correct after processing. Correct, if there is a tolerance, please indicate the tolerance data

. 7. The operator must strictly control the machine tool processing speed. The F speed and S spindle speed must be reasonably adjusted to each other. When the F speed is fast, it must be faster relative to the S spindle. The feed speed must be adjusted in different areas. After the steel material is roughened (30F/R5) and processed, the gauge and touch count must be recalibrated. After processing, check the quality before dismounting the machine. The processing must be perfect in one go. 8. Make a good tool reference table, including the total length of the tool, the length of the straight body, the length of the blade, the length and model of the flying knife handle, and use it as a reference for programming.

(Especially the flying knife handle, the tool must be calibrated when bare cutting) 3. CNC work progress and management 1. The use and management of tools must be strictly distinguished between bare knives for copper and steel materials, and each operator is assigned a rough knife, Light knives should be distinguished by boxes. Light knives for gongtonggong and steel materials should be used and placed separately. Gongtonggong's knives cannot be used to remove gongs and steel materials. 2. The cutter head and locking nozzle should be cleaned of copper and iron filings every time the cutter is installed. The fixtures and tools should be placed neatly. Different tools should be designated in the same placement area and placed neatly. The concept of tidiness should always be adhered to. . 3. The operator should reasonably adjust the F speed feed and S speed. During processing, he should be prepared for the next step, including clamping the workpiece and the cutting tools for the next step, and do the preparation work while saving the machine down time. This improves production efficiency. After the addition, the workpiece must be blown clean of copper and iron filings, oil stains, and smoothed out. The workpiece must be placed on the pallet in the CNC finishing processing area and the next department to be processed shall be notified.