9 reasons why cnc vertical mill hits the tool, do you know?

It is not confirmed whether the machine tool is locked or not. Because the cnc vertical mill is locked by software, it is impossible to visually see whether the machine tool is locked in the simulation interface when the automatic operation button is pressed during simulation processing. 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. Forgetting to turn off the dry run switch during processing. 2. The dry run switch is not checked. In order to save time during program simulation, the dry run switch is often turned on. Dry run means that all motion axes of the machine tool run at the speed of G00. If the dry run switch is not turned off during processing, the machine tool ignores the given feed rate and runs at the speed of G00, causing accidents of hitting the tool and hitting the machine tool. There is no reference point return after the dry run simulation. When the program is verified, the machine tool 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 The zero point coordinate is consistent with the absolute and relative coordinates. If no problems are found after the program is checked, the machining operation will be carried out, which will cause tool collisions. 3. The overtravel release direction is wrong. 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, eventually pulling the lead screw and causing damage to the machine tool. The cursor position is incorrect when the specified line is running. When a specified line is run, it is usually executed downward from the cursor position. For lathes, it is necessary to call the tool offset value of the used tool. If the tool is not called, the tool in the running program segment may not be the desired tool, and it is very likely that the tool collision 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, if it is not called, it may cause tool collision. Summarize 9 reasons: 1. Program writing error 2. Program sheet remark error 3. Tool measurement error 4. Program transmission error 5. Tool selection error 6. The blank exceeds expectations. The blank is too large and does not match the blank set by the program. 7 , The workpiece material itself is defective or the hardness is too high. 8. The clamping factor, the interference of the pad and the program is not considered. 9. The machine malfunctions, sudden power failure, lightning strikes, etc. The cnc vertical mill is a high-precision machine tool, and its anti-collision is It is very necessary for the operator to develop the habit of being careful, careful and cautious, and operate the machine tool in the correct way to reduce the occurrence of machine tool collision. With the development of technology, advanced technologies such as tool damage detection during processing, machine tool anti-collision detection, and machine tool adaptive processing have emerged, which can better protect cnc vertical mills.