What should I do if the vmc cnc milling machine hits the knife? How to solve it? Vmc cnc milling machine hitting a knife is a topic that I don’t want to mention and cannot avoid. It is said that those who have not encountered this situation are novices. Many people should have encountered a vmc cnc milling machine hitting a knife, but they don’t know how to do it. Let's take a look together.
As a manufacturer of vmc cnc milling machine or a processing company, we often hear about accidents of vmc cnc milling machine hitting a knife. If the operator does not abide by the safety operation regulations, personal accidents or equipment accidents will occur. In the vmc cnc milling machine, 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 small, but the probability of equipment accidents is greater than that of other mechanical processing. Many, because ordinary machine tools are processed manually through the operator's own operating experience; vmc cnc milling machine is automatically controlled by the processing program for processing.
Machining center hitting knife
1. Cause analysis and prevention of knife collision with vmc cnc milling machine
1. Programming errors
The process arrangement is wrong, the process undertaking relationship is not considered thoroughly, and the parameter setting is wrong. example:
A. The coordinates are set to zero at the bottom, but the top is 0 in practice;
B. The safety height is too low, causing the tool to be unable to lift the workpiece completely;
C. The margin for the second opening is less than that of the previous knife;
After the program is written, the path of the program should be analyzed and checked;
2. Incorrect remarks in the program sheet
Example: A. The number of one-sided bumps is written as four-sided;
B. The clamp distance of the vise or the protrusion distance of the workpiece are marked incorrectly;
C. Unknown or wrong remarks on the extension length of the tool will cause the tool to hit;
The procedure sheet should be as detailed as possible;
The principle of replacing the old with new should be adopted when changing the procedure list: destroy the old procedure list.
3. Tool measurement error
Example: A. Tool setting data input does not consider tool setting;
B. Tool installation is too short;
Use scientific methods for tool measurement, and use more accurate instruments as much as possible;
The length of the installed knife is 2-5mm longer than the actual depth.
4. Program transmission error
The program number call is wrong or the program has been modified, but the old program is still used for processing;
The on-site processor must check the detailed data of the program before processing;
For example, the time and date the program was written, and simulated by the bear clan.
5. Wrong tool selection
Example: A.R4 becomes D8
6. The blank exceeds expectations, and 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. Clamping factors, spacer interference but not considered in the program
9. Machine failure, sudden power failure, lightning strikes, etc.
