As a manufacturer of vertical mill cnc or a processing company, we often hear about accidents of vertical mill cnc hitting a knife. If the operator does not follow the safety operation regulations, personal accidents or equipment accidents may occur. In CNC machining centers, because 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. Therefore, the probability of personal accidents is very small, but the probability of equipment accidents is much greater than other mechanical processing., Because the ordinary machine tool is processed by the operator manually operating the machine tool with his own operating experience; the CNC machining center is automatically controlled by the machine tool for processing through the processing program. The CNC machining center is not directly controlled by people, but controlled by programs.
User:
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 wrong way. Carelessness when operating the machine tool will cause a tool collision accident. If a knife hit occurs during the use of a vertical mill cnc, it will not only bring great psychological pressure to the operator, but also cause certain economic losses. So, how can we avoid it?
Manufacturer:
Due to the high price of vertical mill cnc, the difficulty of maintenance and the high cost, and 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 can be followed regularly. Because the CNC machining center is locked by software, during simulation processing, when the automatic operation button is pressed, it is not intuitive to see whether the machine tool is in the simulation interface. Locked. 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 freight switch during processing. Because in the program simulation, in ord er 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 machining center 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 machine tool 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 coordina te 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, if it is not called, it may cause tool collision.
In short, master the programming skills of the machining center, use various methods to verify the program, the coordinate system and tool length compensation and radius compensation are set correctly, and the operation process should be observable and listen to all directions to avoid unnecessary mistakes . It can effectively avoid the phenomenon of knife collision and better protect the vertical mill cnc.
