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Summary of the causes of collisions in CNC machining centers

source: time:2019-10-23 09:09:01

In the process of CNC machining, we often encounter the problem of machining center crashing, which will not only affect the efficiency of machining, but also may destroy the workpiece, more likely to cause personal accidents. CNC machining CNC, also known as computer gong, CNC ch or CNC machine tool, is actually a method in Hong Kong. It can reduce the number of tooling in a large amount. CNC machining does not need complex tooling to process parts with complex shapes. CNC machining is a new machining technology. The main work is to prepare machining programs, that is, to change the original manual activities into computer programming. If you want to change the shape and size of parts, you only need to modify them The part processing procedure is applicable to the development and modification of new products. NC machining is a process method of machining parts on NC machine tools. The process procedures of NC machine tools and traditional machine tools are generally consistent, but there are also obvious changes. The machining method of controlling the displacement of parts and tools with digital information. It is an effective way to solve the problems of variable parts, small batch, complex shape, high precision and to realize high efficiency and automatic machining. CNC machining generally refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring milling machine, etc. The feed path of finish machining is basically carried out along the contour sequence of its parts. Therefore, the key work of determining the feed path is to determine the feed path of rough machining and empty stroke. So what are the causes of CNC machining center collision (I) tool compensation input error is the most common cause of collision. 1. Input error of coordinate offset compensation 60 Li. 2. Input error of workpiece coordinate g54. 3. Input error or call error of length G43 compensation h. 4. Input error or call error of radius G41 compensation D. 5. Input error of G40 or G49 or g80. 2. Wrong operation. 1. Wrong procedure. 2. Wrong tool installation. 3. Wrong machining coordinate. 4. Startup Failure to return to the original point 5. Hand wheel or manual direction error (3) special program (procedure) may also cause collision 1. There is more than one tool change in the program (it may collide due to tool compensation error) 2. Program (procedure) lowers the tool at the mechanical reference point and then returns to the lower tool point (pressing plate or screw) 3. Program (procedure) lowers the tool at the beginning of the oblique line (Z appears in front of H) 4 . the safety height is lower (hitting the pressing plate or nut)

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