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EDM wire cutting steps and requirements

2016-02-20

        WEDM machining the workpiece size is to achieve a technology.Under certain equipment conditions, rational course is to ensure that the development process an important part of the workpiece quality.

  Analysis of the pattern of the workpiece quality assurance and workpiece integrated technical indicators is the first step of decisive significance.In blanking die, for example, when you want to pick the first digestion pattern can not or difficult to use wire electric discharge machining of a workpiece pattern, roughly the following categories:

 (1)Plus electrode wire diameter is smaller than the discharge gap narrow workpieces, or graphics within a rounded corner of the workpiece is not allowed derrick rigid electrode is formed with a discharge gap;In conformity with the wire cutting process should focus on surface roughness, dimensional accuracy, thickness of the workpiece, the workpiece material, size, with respect clearance and Chong parts thickness careful consideration.

  (2)Reasonably determine the die gap. Rational use of the die gap, is one of the key factors related to the life of the mold parts and punching burr size.Die gap of different materials generally choose the range:
  Soft punching material, such as copper, aluminum soft, semi-rigid aluminum, rubber wood, red cardboard, mica, etc., punch and die gap was 10% -15% optional punch material thickness.
  Hard punching materials such as iron, steel, silicon steel, etc., punch and die gap of 15% -20% optional punching thickness. Here are some practical experience in data processing line cutting stamping die than popular large international die gap smaller.Because the surface of a layer of wire cutting loose tissue crisp melted layer, the greater processing power parameters, surface roughness worse, the thicker the melted layer. With the increase of Punch times, the surface of this layer will gradually wore off crisp pine, are die gap increases.

       Reasonably determine the transition radius. In order to improve the life-line cable, wire round general Die, far intersection, especially round the corner transition should add a small angle.Transition circle size according blanking material thickness, shape and mold life requirements and technical conditions to consider Chong parts, as had thick Chong parts, the transition circle also increase accordingly. Generally use within 0.1-0.5㎜ range.

        For workpiece material is thinner, with a smaller gap die, stamping and allowed to increase the transition circle, in order to get a good punch and die with the gap, usually in the corner of the graphics also add a transition circle.Since the electrode Sijia track will naturally processed, including the corner radius equal to the radius of the wire plus single discharge gap transition circle.  
       When programming, according to the circumstances of ingredients, choose a reasonable clamping position while cutting determine a reasonable starting point and cutting routes. Cut from the point to be taken in the drawing of the corner, or easily repair the spur to the site. Cutting the main route to prevent or reduce the mold deformation principle, the general should consider making equipment tucked near the side of the graphics final cut easily.

       According to the program single tape production is completed, be sure to make a good program and the tape by one single proofread, proofread good with tape after the program input to the controller in order to test cut template, be sure to simple workpieces can be directly processed .To require high dimensional accuracy, punch with a small gap between the die, try cutting thin material must be used, you can check its accuracy and to engage with the gap on the cut pieces. Is found not to meet the requirements, it is timely analysis, identify problems, to modify the program until after passing the official processing die. This step is an important part of the workpiece to avoid scrapped.

       According to the actual situation, you can also enter from the keyboard, or directly transmitted to the program directly from the program controller.

       Stay tuned for detailed product information company official website: http://www.langfengmetallic.com/

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