Reasons for deviation of punch accuracy

Reasons for deviation of punch accuracy

Punch is a kind of equipment that we often use in industrial production. If the equipment wants to play an ideal performance, its accuracy requirements are relatively high. But when we use this equipment, we sometimes find that its accuracy has been deviated. The main reasons for the deviation of equipment accuracy are as follows, let’s take a look!

  • 1. The precision of slider and guide rail. The slider is the direct workmanship part of the punching machine, and it is generally manufactured by integral casting of cast steel or milled cnc machining of forged steel. The accuracy of the slide block and the guide rail is a whole. The open punch is generally composed of two guide rails. The guide rails are V-shaped and rectangular. V-shaped guide rails are also called four-sided guide rails. The guide rails have four contact surfaces. Rectangular rails are also called six-sided rails, and the rails have six contact surfaces. All guide rail planes should be precisely ground with a guide rail grinder, and a lever instrument should be used for measurement during the assembly process, and be scraped to ensure the accuracy of the fit.
  • 2. The bottom surface of the slider and the accuracy of the worktable. The upper mold is installed on the bottom surface of the slide block, and the lower mold and other feeding and unloading equipment are installed on the worktable. The two workbenches are made of cast steel or forged steel plates. After the casting is completed, the milling machine is used for cnc milling processing, and then the surface grinder is used for grinding to ensure the accuracy of the tilting punch. When assembling, it is necessary to use the instrument to measure, and if the error is found, it can be adjusted in time by scraping and grinding.

Once the accuracy of the punching machine deviates, it will not be able to exert its ideal performance, and the workpieces we processed with it will also not be able to use it normally. Therefore, when we find the accuracy deviation of the equipment during use, we should stop using it in time and look it up carefully. Reason, so that the problem can be solved in a targeted manner.

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Author: ANDY Minghe