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How to control the speed when processing plastic molds!

Update:06-07-2020
Summary:

Why the processing speed is a very important goal in in […]

Why the processing speed is a very important goal in injection molding, because it not only relates to the processing cycle of the parts, but also determines the economic cost of processing. We often say that the EDM machining speed refers to the certain mass and volume of the workpiece that is eroded in the same unit time under certain pulse parameter conditions, which can be expressed by volume machining speed or mass machining speed, respectively

Mirror polishing of plastic mold

 

On the mold steel with the same appearance roughness, the relative maximum processing speed of the electrical pulse when the electrode is worn out is an important goal to measure the electrical pulse processing and machine tool process functions. In general, the manufacturer gives the maximum processing current, the highest processing speed that can be reached under the best processing conditions. Therefore, when we practice processing, due to the ever-changing dimensions and shape of the processed parts, the processing conditions and chip removal conditions are different from the aspirations. Even when roughing in the machining center, the processing speed is often much lower than the maximum processing speed target of the machine tool. .

Each injection processing pulse discharge will leave a tiny pit on the surface of the workpiece. The size of the pit and the amount of erosion data are approximately proportional to the pulse energy, that is, the greater the pulse energy, the heat transferred to the workpiece The more there will be, the more information will be eroded. In theory, the EDM machining speed is proportional to the energy and discharge frequency of a single pulse, but in practice, the effect of a single pulse is not manifested alone, but the result of the effect of multiple pulses together. The pulse power supply is continuous The process of conveying energy to the machining gap with pulse conditions is much more complicated. The processing speed is a multivariate function related to the pulse discharge time, pulse interval, pulse discharge current, pulse waveform, processing target function, electrode data, chip removal conditions, etc.

Processing speed is very important in mold injection processing. Because this is a prerequisite for the sampling of plastic products. If the customer asks for early delivery on the basis of better quality, the processing time and speed are the most important.

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