When doing CNC Machined Parts, we often encounter the problem of collision with the machining center. This not only affects the machining efficiency, but it may also even destroy the workpiece, and it may cause personal accidents.
CNC Machined Parts
General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, Precision CNC Milling, CNC machining boring and milling machine, etc. CNC machining CNC is also called computer gong, CNC machine tool. Actually, it is a kind of name in Hong Kong. It reduces the number of tooling a lot. CNC machining of complex shapes does not require complicated tooling. CNC machining is a new type of processing technology. It is the preparation of processing programs, that is, the manual conversion into computer programming. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification. The process specifications of NC machine tool machining and traditional machine tool machining are generally consistent, but significant changes have also occurred. Machining method that uses digital information to control part and tool displacement. It is an effective way to solve the problems of variable parts, small batches, complex shapes, high precision, etc., and to achieve high efficiency and automatic processing. CNC machining generally CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. The feed route for finishing is basically performed along the contour of its parts. Therefore, the focus of determining the feed route is to determine the feed route for rough machining and empty stroke. So what are the reasons for collisions in CNC machining centers?
Incorrect input of cutter compensation is the most common cause of the collision
1. Coordinate input error in 60
2. Incorrect input of workpiece coordinate G54, etc.
3. The length G43 compensates for H input errors or call errors
4. The radius G41 compensates for D input errors or call errors
5. G40 or G49 or G80 input error
1. Incorrect procedure
2. Incorrect knife
3. Wrong processing coordinates
4. did not return to the origin
5.Handwheel or manual direction error
Special procedures can also cause collisions
1. There is more than one tool change in the program (it will collide due to incorrect tool compensation)
2. The program returns to the machining cutting point after cutting the tool at the mechanical reference point (hitting the plate or screw)
3. The program starts off with a slash (Z appears before H)
4. The safety height is relatively low (bumping plate or nut)
CNC machining has the following advantages:
① Reduce the number of tooling a lot and do not need complicated tooling to process parts with complex shapes. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification.
② Stable processing quality, high processing accuracy and high repeat accuracy, adapt to the processing requirements of the aircraft.
③ The production efficiency is higher in the case of multi-variety and small batch production, which can reduce the time for production preparation, machine tool adjustment and process inspection, and reduce the cutting time due to the use of the optimal cutting amount.
④ It can process complex profiles that are difficult to process by conventional methods, and even machining parts that cannot be observed.
The disadvantage of CNC machining is that the cost of machine tools and equipment is high, requiring a high level of maintenance personnel.
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