Therefore, from the perspective of maintaining accuracy, the tools and machine tools or workpieces are not allowed in the use of CNC machine tools. Below we are summarized and analyzed the cause of the collision knife.
Common collision situation
Because the CNC processing center is locked with software, when simulating the automatic run button, when the automatic running button is pressed, the simulation interface cannot intuitively see whether the machine tool has been locked. When simulation, there are often no swords. If the machine is not locked and runs, it is easy to hit the knife. Therefore, before the simulation processing, you should go to the operation interface to confirm whether the machine tool is locked.
Forgot to turn off the empty operation switch during processing. Because when program simulation, the air operating switch is often turned on in order to save time. The air transportation refers to the speed of all the motion axes of the machine tool at the speed of G00. If the operation switch is not turned off at the processing time and space, the machine tool ignores the given feed speed, and runs at the speed of the G00, causing a knife and crashing tool accident.
After the air operation simulation, I did not return to the reference point again. At the time of the verification program, the bed is locked, and the relative workpiece processing of the tool is simulated (coordinates and relative coordinates are changing). At this time, the coordinates do not match the actual position. The coordinates are consistent with and relative coordinates. If the processing operation is performed without a problem after the verification program, it will cause the knife to collide. The direction of over -range lifting is wrong.
When the machine tool is overcome, you should hold the over -range lifting button and move in the opposite direction in the opposite direction by manual or hand -shaking. However, if the dismissal is reversed, it will cause harm to the machine tool. Because when the over -range is lifted, the over -range protection of the machine tool will not work, and the itinerary switch of over -range protection is already at the end of the itinerary. At this time, it may cause the workbench to continue to move towards the overrun, and eventually pulls the screw, causing damage to the machine tool. The position of the running time is improper. When running, it is often executed down from the position of the cursor.
For the lathe, you need to call the knife bias of the knife used. If the tool is not called, the knife running the program may not be the tool that is required, and it is very likely that the knife accident is caused by different tools. Of course, you must first call the length compensation value of the coordinate system such as G54 and the knife on the processing center and CNC milling machine. Because the length of each knife is different, it may cause a knife if it is not called.
