Shenzhen CNC machining center operation process（3）

　 6. Analysis of Shenzhen CNC processing manufacturers to start processing

　　The execution of each program must be carefully checked whether the tool used is the tool specified in the programming guide. When starting processing, the feed speed should be adjusted to the minimum, single block execution, quick positioning, knife drop, and feed must be concentrated, and the hand should be placed on the stop button to stop immediately if there is a problem. Pay attention to the direction of the tool movement to ensure safe advancement. Knife, and then slowly increase the feed rate to the appropriate, and at the same time add coolant or cold air to the tool and the workpiece.

　　 When roughing, do not leave it too far from the control panel. If there is any abnormal phenomenon, stop the machine and check it in time.

　　 After roughing, pull the watch again to make sure that the workpiece is not loose. If there is, it must be recalibrated and touched.

　　Continuously optimize processing parameters during processing to achieve the best processing effect.

Because this process is a key process, after the workpiece is processed, it should be measured whether the main dimension value is consistent with the drawing requirements. If there is a problem, immediately notify the team leader or programmer to check and solve it. Must be sent to the inspector for special inspection.

　　 Machining type: Hole machining: Before drilling on the machining center, be sure to use the center drill to position, then drill with a drill bit 0.5~2mm smaller than the drawing size, and finally finish with a suitable drill bit.

Reaming processing: To reaming the workpiece, it is also necessary to use the center drill to position, then drill with a drill bit 0.5~0.3mm smaller than the drawing size, and finally use the reamer to ream the hole. Pay attention to control the spindle speed during reaming. Within 70~180rpm/min.

Boring processing: To perform boring processing on the workpiece, first use a center drill to position, then drill with a drill bit 1 to 2 mm smaller than the drawing size, and then use a rough boring tool (or milling cutter) to process only 0.3 mm on one side The left and right machining allowances are finally used for fine boring with pre-adjusted fine boring tools. The final fine boring allowance should not be less than 0.1mm.

　　Direct numerical control (DNC) operation: Before DNC numerical control processing, the workpiece must be clamped, the zero position set, and the parameters set. Open the processing program to be transferred in the computer to check, and then let the computer enter the DNC state, and enter the file name of the correct processing program. Press the TAPE key and the program start key on the processing machine, at this time the machine tool controller appears flashing LSK. Press the Enter keyboard on the computer to perform DNC data processing.

　　 7. Shenzhen CNC processing manufacturers analyze the content and scope of workers' self-inspection

　　The processor must read the content of the process card clearly before processing, clearly know the parts, shape, and dimensions of the drawings to be processed, and know the processing content of the next process.

　　Before clamping the workpiece, you should measure whether the size of the blank meets the requirements of the drawing. When clamping the workpiece, you must carefully check whether its placement is consistent with the programming operation instructions.

　　After rough machining is completed, self-inspection should be carried out in time to adjust the error data in time. The content of the self-check is mainly the position and size of the processed parts. Such as: whether the workpiece is loose; whether the workpiece is correctly centered; whether the size of the processed part to the reference edge (reference point) meets the requirements of the drawing; the positional size of the processed parts relative to each other. After checking the size of the position, the rough shape ruler should be measured (except for the arc).

　　After roughing self-inspection, finish machining. After finishing, the workers should conduct self-inspection on the shape and size of the processed parts: the basic length and width of the processed parts of the vertical plane; the measured base point size on the drawing of the processed parts of the inclined plane.

　　 Workers complete the self-inspection of the workpiece, and confirm that it conforms to the drawings and process requirements before removing the workpiece and sending it to the inspector for special inspection.

　　The above is the introduction of the related content of Shenzhen CNC processing. If you are interested in our products, please contact us, we look forward to cooperating with you!