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How to avoid the accident of CNC lathe?

Posted by: Chris Na 2021-05-26 Comments Off on How to avoid the accident of CNC lathe?

For CNC lathe tool collision accidents, personal accidents or equipment accidents may occur if the safety operation regulations of the lathe are not followed. In the process of processing, because most of them are equipped with safety protection doors, the safety doors are required to be closed during processing, and the operator does not directly operate the machine tool. Therefore, the probability of personal accidents is very small, but the probability of equipment accidents is much greater than that of other mechanical processing. , When operating the machine tool, technicians often make programming mistakes, input errors, and make corrections, and the coordinate system or tool compensation is driven into the error. Carelessness when operating the machine tool will cause a tool collision accident. If the tool crash occurs during the use of the CNC lathe, it will not only bring great psychological pressure to the operator, but also cause certain economic losses. So how to avoid and prevent it?
In fact, the occurrence of tool collision accidents can be followed regularly. Because the software is used for locking during Cnc Machining, it is not intuitive to see whether the machine tool is locked in the simulation interface when the automatic operation button is pressed during simulation processing. live. There is often no tool setting during simulation. If the machine tool is not locked and running, tool collision is very likely to occur. Therefore, you should go to the running interface to confirm whether the machine tool is locked before simulating processing. Forgot to turn off the air transport switch during processing. Because in the program simulation, in order to save time, the dry run switch is often turned on. There is no reference point return after the dry run simulation. When verifying the program, the CNC lathe is locked and the tool is in the simulation operation relative to the workpiece processing (absolute coordinates and relative coordinates are changing). At this time, the coordinates do not match the actual position. The method of returning to the reference point must be used to ensure The machine zero coordinate is consistent with the absolute and relative coordinates.
When the CNC lathe is overtravel, you should press the overtravel release button and move it in the opposite direction manually or manually to eliminate it. However, if the direction of release is reversed, it will cause damage to the machine tool. Because when the overtravel release is pressed, the overtravel protection of the machine tool will not work, and the travel switch of the overtravel protection is already at the end of the travel. At this time, it may cause the workbench to continue to move in the overtravel direction, and eventually the lead screw will be broken, causing damage to the machine tool. When the specified line is running, it is often executed downward from the cursor position. For the lathe, it is necessary to call the tool offset value of the used tool. If the tool is not called, the tool of the running program segment may not be the desired tool, and it is very likely that the tool collision accident may occur due to different tools. Of course, the coordinate system such as G54 and the length compensation value of the tool must be called first on the machining center and Cnc Milling Machine. Because the length compensation value of each tool is different, it may cause tool collision if it is not called.

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