In order to ensure the quality of the product, we need to be careful in the operation to reduce the probability of error. Therefore, there are many matters needing attention when operating. But many new users don’t know what matters should be paid attention to when operating. What are the precautions for machining?
- The clamping method of mechanical parts processing should reasonably choose the positioning datum and clamping scheme
When setting our benchmark, we should follow the two principles of “benchmark unification” and “benchmark coincidence”.
- In large-scale machining, all surface processing should be completed in one positioning and clamping as far as possible. Therefore, it is necessary to select a positioning method that is easy to process all surfaces of the workpiece.
- When determining the position of the workpiece on the worktable, we must consider the influence of the processing of each position, the length of the tool and the stiffness of the tool on the machining quality.
- The fixture used in machining should be assembled by common parts and can be adjusted as far as possible, which can effectively shorten the production preparation cycle.
Problems needing attention in arranging large machining sequence
(1) In order to arrange the machining sequence, we must follow the basic principles of “surface before hole” and “rough first and then fine”.
(2) Determine the tool point and tool change point, once determined, not suitable for replacement.
(3) According to the centralized process of cutting tools, the same tool can be avoided to be reused, and the times and time of tool replacement can be reduced.
(4) For the hole system with very high coaxiality requirement, the hole system in other coordinate positions should be processed after the completion of all the processing of the hole system after one positioning, which can effectively eliminate the error caused by repeated positioning and improve the coaxiality of the hole system.
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