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The details of producing precision mechanical components cannot be ignored.

Jun 11,2020


  When the machining factory stops the processing of precision parts, as a staff member, it is necessary to be very careful and prudent. Use a micrometer to check the tools on the spindle, ensuring that the static runout is controlled within 3μm. If necessary, re-clamp or replace the tool holder system. Whether it is a part being processed for the first time or a part being processed repeatedly, it is essential to check each tool and each segment of the program according to the drawing process, program, and tool adjustment card before processing, especially regarding tool length compensation and radius compensation in the program. If necessary, perform a trial cut again.

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  During the single trial cut in the machining factory, the rapid magnification switch must be set to a lower gear. For each tool used for the first time, it is necessary to verify whether its actual length matches the given compensation value. During program operation, pay special attention to several displays on the CNC system.

  Coordinate display: Understand the current position of the tool movement point in the machine tool coordinate system and the workpiece coordinate system, understand the movement amount of this program segment, and how much remaining movement amount is left; buffer storage display: You can see the status instructions of each segment of the program being executed and the content of the next program segment; main program and subprogram display: Understand the detailed content of the program segment being executed.

  When trial cutting in the machining factory, when the tool reaches 30~50mm from the surface of the workpiece, it is necessary to maintain a low-speed feed and verify whether the remaining coordinate values of the coordinate axes and the X, Y axis coordinate values are consistent with the drawing. For some tools that require trial cutting, use a 'progressive' method. For tools that use tool radius compensation functions, adjustments can be made from large to small while trial cutting.

  During trial cutting and processing in the machining factory, after changing tools and auxiliary tools, it is essential to re-measure the tool length and correctly adjust the tool compensation value and tool compensation number. When retrieving the program, pay attention to whether the position indicated by the cursor is reasonable and accurate, and check whether the tool and machine tool movement direction coordinates are correct. After program modification, carefully calculate and verify the modified parts.

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