If a CNC lathe encounters a knife accident, and does not comply with the safety operation regulations of the machine tool, personal accidents or equipment accidents may occur. In the process of processing, because most of the safety doors are installed and the safety doors are required to be closed during processing, 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, because ordinary machine tools are It is processed by the operator with own operating experience manually operating the machine tool.
The CNC lathe is processed by the automatic control of the processing program. It is not directly controlled by humans, but controlled by the program. When operating the machine tool, technicians often make mistakes in programming, input and modification, coordinate system or tool compensation. Careless operation of the machine tool can cause tool collision accidents. During the use of CNC lathes, if tool impact occurs, it will not only bring great psychological pressure to the operator, but also cause economic losses. So how to avoid and prevent it?
Because the price of CNC equipment is not cheap and the maintenance is difficult, the high precision, high efficiency and high automation of the processed parts are mainly guaranteed by the accuracy of the machine tool. Once an equipment accident occurs, the accuracy of the machine tool will be severely reduced. In fact, the occurrence of tool collision accidents is regular, because CNC machining is locked by software. It is not intuitive to press the automatic operation button during simulation processing and see whether the machine tool is locked on the simulation interface. During the simulation, there is usually no tool setting. If the machine does not lock the operation, it is easy to collide with the machine. Therefore, before simulating processing, it is necessary to check whether the machine tool is locked on the operation interface. Forgot to turn off the air freight switch during processing. In order to save time, in the process of program simulation, the idle running switch is often turned on.
There is no reference point after the dry run simulation. When checking the program, the CNC lathe is locked, and the relative workpiece machining of the tool is in the simulation operation (absolute coordinates and relative coordinates are changing). At this time, the coordinates are inconsistent with the actual position. Therefore, the method of returning to the reference point must be adopted to ensure that the machine The zero point coordinates are consistent with absolute coordinates and relative coordinates.
When the small 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 release direction is opposite, the machine tool will be damaged. Because when the overtravel is released, the overtravel protection of the machine tool does not work, and the travel switch of the overtravel protection is already at the end of the travel. At this time, the worktable may continue to move in the overtravel direction, and finally the lead screw is pulled out, causing the machine tool to damage the specified straight line operation, which is usually executed from the position where the cursor is located. For lathes, it is necessary to call the tool deviation value of the tool used. If the tool is not called, the tool for running the program part may not be the required tool, which may cause a collision accident due to different tools. Of course, in the machining center and CNC milling machine, the coordinate system such as g54 and the length compensation value of the tool should be called first. Since the length compensation value of each tool is different, if it is not called, it may cause tool collision.
Therefore, we need to master the programming skills of small CNC lathes, and use various methods to verify whether the program, coordinate system, tool length compensation, and radius compensation are set correctly. Be careful during the operation to avoid unnecessary errors, which can effectively avoid The impact of the tool can better protect the CNC lathe of the machine tool.