Regarding tool collision accidents on CNC lathes, personal accidents or equipment accidents may occur if the safe operating procedures for lathes are not followed. During the processing, since most of them are equipped with safety doors, the safety doors are required to be closed during processing, and the operator does not directly operate the machine tool, so the probability of personal accidents is very small, but the probability of equipment accidents is greater than that of other mechanical processing. Many, because ordinary machine tools are processed by the operator manually operating the machine tool based on his or her own operating experience.
The CNC lathe automatically controls the machine tool for processing through the processing program. It is not directly controlled by humans, but is controlled by the program. When operating machine tools, technicians often make mistakes in programming, inputting, and correcting errors. The coordinate system or tool compensation is entered into the wrong direction. Carelessness when operating machine tools can cause tool collision accidents. If a tool collision occurs during the use of a CNC lathe, it will not only bring great psychological pressure to the operator, but also cause huge economic losses. So how to prevent and prevent it?
Because CNC equipment is expensive and difficult to repair, and the high precision, efficiency, and automation of processed parts are mainly guaranteed by the accuracy of machine tools, once an equipment accident occurs, the accuracy of machine tools will be seriously reduced. In fact, the occurrence of tool collision accidents is regular. Because software is used for locking during online cnc machining service. During simulated processing, when the automatic operation button is pressed, it is not possible to intuitively see whether the machine tool has been locked on the simulation interface. live. There is often no tool setting during simulation. If the machine tool is not locked and running, tool collision is easy to occur. Therefore, before simulating processing, you should go to the running interface to confirm whether the machine tool is locked. Forgot to turn off the air transport switch during processing. Because during program simulation, the dry run switch is often turned on to save time.
There is no return to the reference point after dry running simulation. When verifying the program, the CNC lathe is locked and the tool is running simulated relative to the workpiece (the absolute coordinates and relative coordinates are changing). At this time, the coordinates do not match the actual position. You must use the method of returning to the reference point to ensure The mechanical zero point coordinates are consistent with the absolute and relative coordinates.
When the CNC lathe overtravels, you should press and hold the overtravel exemption button and move it in the opposite direction manually or hand-cranked to eliminate it. However, if the removal direction is reversed, damage to the machine tool will occur. Because when overtravel release is pressed, the overtravel maintenance of the machine tool will not work, and the travel switch for overtravel maintenance is already at the end of the stroke. At this time, it is possible that the workbench will continue to move in the overtravel direction, eventually breaking the screw and causing damage to the machine tool. When running, it is often executed downward from the position of the cursor. For lathes, it is necessary to call the tool offset value of the tool used. If the tool is not called, the tool in the running program segment may not be the desired tool, and a tool collision accident may occur due to different tools. Of course, in machining centers and CNC machining brass parts machines, the coordinate system such as G54 and the length compensation value of the tool must be called first. Since the length compensation value of each knife is different, if it is not called, it may cause knife collision.
Therefore, we must master the programming skills of CNC lathes and use various methods to verify the program. The length compensation and radius compensation of the coordinate system and tool are set correctly. We must be careful during the operation to prevent unnecessary mistakes, which can effectively prevent To prevent the occurrence of tool collision, better maintain CNC lathes.