Using CNC processing equipment to process, high efficiency, good quality, but if the process design is not properly arranged, it can not reflect its advantages. From the experience of some CNC processing plants, there are some problems as follows:
- CNC machining process is too scattered
The reason for this problem lies in the fear of complexity (refers to the preparation time), simple programming, simple operation and processing, easy adjustment of tool setting by using a knife, and being used to ordinary processing. As a result, the product quality (position tolerance) is not easy to guarantee and the production efficiency can not be brought into full play. Therefore, CNC processing personnel and operators should be fully familiar with the knowledge of CNC machining, try more to master the relevant knowledge, as far as possible to use the method of process concentration for processing, more use, will naturally reflect its advantages. After adopting the centralized process, the unit processing time increases. We arrange two equipment face-to-face to realize the operation of two equipment by one person, which greatly improves the efficiency and ensures the quality.
- CNC machining sequence is unreasonable
Some CNC processing operators consider some problems in preparation, and often arrange the processing sequence irrationally. NC machining is usually carried out according to the requirements of general machining process planning, such as first coarse and then fine (tool change), first inside and then outside, reasonable selection of cutting parameters, so that the quality and efficiency can be improved.
Be careful to use G00 (g26, G27, g29) fast positioning instructions. G00 instructions bring great convenience to programming and use. However, if it is not set and used properly, it will often lead to over impact when returning to zero due to too large speed setting, the precision will be reduced, and the equipment guide rail surface will be strained. If you don’t pay attention to the return to zero route, it is easy to cause safety accidents of collision between workpiece and equipment. Therefore, when considering the use of G00 instruction, we should consider carefully, not at will.
In the process of NC machining, it is especially important to strengthen the retrieval and trial operation of the program. After the program is input into the control system, the operator should use Sch key and ↑, ↓, ←, → mobile keys for uncertain and definite retrieval, and modify the program if necessary to ensure the accuracy of the program. At the same time, before the formal implementation of the program processing, must go through the program trial run (open power amplifier), to confirm whether the processing route is consistent with the design route.
The above are some common problems and solutions when using CNC processing equipment. There may be some other problems in the actual work, but as long as the CNC processing engineers and operators gather their wisdom and master the relevant knowledge and skills of numerical control, the CNC equipment will be able to play the greatest benefit for the enterprise.
About the author