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Usually when processing high-precision parts, slow wire cutting machines are widely used. This equipment has many varieties, the operation of each machine tool is similar, although some basic operation content and requirements and fast wire EDM machine has similarities, but slow wire cutting machine processing workpiece performance is much better than fast wire cutting machine. Dongguan ganzoo Prototype Manufacturing Co., Ltd. can undertake all kinds of precision CNC Machining, aluminum alloy small batch processing, batch aluminum alloy processing, aluminum alloy parts CNC production, aluminum parts machining, robot metal parts processing. Kaifu company has more than ten years of rich experience in aluminum alloy CNC precision machining manufacturing industry, the company has high-precision CNC milling, high-precision CNC lathe, CNC engraving, Sheet Metal processing, wire cutting, spark discharge, laser Rapid Prototyping and vacuum mold and other equipment, exquisite professional technical team, perfect production process and quality control system. Let's introduce the process preparation for the operation of wire cutting slow wire walking machine tools.
1. Technical performance analysis of workpiece materials
Different workpiece materials, due to their different melting points and gasification points, cannot be processed in the same way, otherwise they will get products whose quality does not meet the requirements. Therefore, the selection must be based on the actual surface quality. To achieve high precision, you need to choose cemented carbide materials, and you cannot choose stainless steel or high-carbon steel that is quenched, otherwise you cannot meet the requirements.
2. Optional working fluid
Spark discharge needs to be carried out in a liquid medium with certain insulation properties, and the insulation performance of the working fluid can compress the discharge point channel after breakdown, thereby limiting the spark discharge point in a smaller channel radius, forming an instant and local high temperature, so that the metal that has not been vaporized melts, and the discharge gap can be quickly restored after the discharge to become an insulating state. The insulation performance is too low, and the electrolysis does not form a breakdown spark release point; The insulation is too high, the discharge gap is small, chip evacuation is difficult, and the speed will be reduced.
3. Selection and correction of electrode wire
Slow wire EDM wire cutting processing electrode wire mostly uses brass wire, copper wire, brass plus aluminum, brass plus zinc, etc. For static EDM wire cutting processing, to ensure that the tension of the electrode wire is increased as much as possible under the premise of continuous wire, you can also choose to use molybdenum wire or tungsten wire.
4. Processing of wire piercing holes
In the actual production and processing, in order to prevent the internal participation in stress deformation of the blank of the workpiece and the thermal stress deformation caused by the discharge, whether it is a closed workpiece of the die or a convex workpiece, it should first be processed in the appropriate position. The wire cutting slow wire walking machine tool has a certain diameter of wire piercing hole for closed cutting to avoid open cutting.
5. Clamping and alignment of workpieces
The workpiece that is ready to be processed by the slow wire EDM machine needs to determine the datum in the previous processing, and the correct clamping and alignment can be made on the slow wire EDM machine. It is necessary to make full use of machine tool accessories to clamp the workpiece. For some complex structure, easy to deform workpieces for clamping, if necessary, can design and manufacture special fixtures.