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In the case of processing with the highest processing efficiency, the rough machining efficiency is reflected and the surface after processing is rough. In actual processing, this high-current machining is rarely needed. Therefore, it can be said that this so-called maximum processing efficiency is not significant for evaluating the processing efficiency of a machine tool.
Generally speaking, the rough machining efficiency of wire-cutting machine tools is not much different. The difference in machining efficiency is mainly reflected in the finish machining. Finishing requires the use of multiple stages of processing conditions, and its processing efficiency is related to many complex factors such as processing conditions, processing allowances, and processes. Different types of processing will have large differences in efficiency, so it is difficult to accurately evaluate the precision of finishing with specific indicators.
We usually use a number of specific application examples to compare, that is, under the same processing conditions, the same processing requirements, and the final total processing time compared. It is worth mentioning that this kind of comparison can only be processed in the objective condition, using the process method and electrical parameters of the wire cutting machine itself, and cannot be interfered by human intervention, so as to reflect the difference in machining efficiency. Because processing efficiency and human adjustment have a great relationship.
For example, when machining a cavity, it takes 20 hours to use the machine's default program to perform the processing. By adjusting the program, the processing time can be controlled to 8 hours. This is very common. However, the more advanced the machine tool, the smaller the adjustable space, and the more adaptable its processing. For complex and variable processing types, the overall processing efficiency will show obvious advantages. The "maximum processing efficiency" indicator can only be used to evaluate the maximum roughing efficiency of a machine tool. In actual production, the level of processing efficiency often depends on the finishing efficiency of the machine tool, and the finishing efficiency can be evaluated through objective application comparison.
For the characteristics of wire-cutting machine tools to improve the processing speed, the following efforts should be made:
1 increase the energy of a single pulse, the pulse amplitude and peak current, in order not to make the load flow of the wire is too large, you should increase the pulse interval accordingly, so that the current average will not increase too much.
2 Maintain the dielectric constant and insulation strength of the coolant, maintain a high spark explosion force and cleaning ability, and minimize the short-circuiting effect of the erosion on the pulse.
3 Improve the mechanical accuracy of the wire guide wire system because narrow slits always go faster than wide slits, and straight seams always go faster than creases.
4 Properly increase the wire speed, speed up the water speed that the molybdenum wire brings into the gap, increase the amount of water, and discharge the erosion material more effectively.
5 increase the water envelope of the outside of the gap on the silk, that is, let the water in the wire driven speed, the speed of the water on the cleaning of the gap is strong.
6 Improve frequency tracking sensitivity and increase pulse utilization.
7 Reducing the commutation time of wire moving motor, quick start, and increase effective machining time.
Promote efficient machining of wire-cutting machine tools
Different wire cutting machine markings have different maximum machining efficiencies, and users often fall into a misunderstanding: The machine that thinks that the larger the labeling data is processed is faster. In fact, the maximum machining efficiency is mainly related to the maximum machining current of the machine tool. The greater the machining current of the machine tool, the higher the maximum machining efficiency.