The remainder of the wire-cut workpiece is cut repeatedly, first dealing with the electrical conductivity of the workpiece. Because in the high-precision wire cutting, the walking route of the wire electrode will reciprocate along the processing track. Let us introduce the skills used in the repeated cutting process of the middle wire.

  In order to ensure that the workpiece to be processed has a high machining accuracy, the wire cutting process relies on the remaining part of the workpiece to conduct electricity to ensure normal electrical processing. However, when the remainder of the workpiece is cut, the cut part detaches from the parent body, the circuit is suspended, and processing cannot continue. The operator must artificially create the manufacturing environment and conditions to meet the conductivity requirements. The processing method of pasting a copper sheet between the cutting part and the parent body and inserting the copper sheet in the cutting gap can be used to create positioning conditions and conductive conditions.

  Paste the connecting copper sheet between the cutting part and the base metal, so that the remaining part of the workpiece can be fixedly connected with the base metal during cutting, so as to ensure that the wire cutting has a good positioning condition. Ensure excellent processing quality. It can be done according to the following process:

  1、Cut the thin copper plate into long strips according to the size of the workpiece, and then fold it to ensure the length of the folded part.

  2、Then, the copper sheet processed by the above two processes is inserted into the gap formed by the electrode wire processing, and at the same time, the surface of the workpiece is coated with instant quick-drying glue.

  Since the WEDM presses the workpiece during cutting, copper plugs are used to ensure conductivity and fixation. The copper plug is too loose, which damages the appearance of the workpiece and destroys the geometric tolerance. Therefore, glue can be used to ensure the fixing of the cut part to the base material. When WEDM is used to machine small workpieces of high hardness, precision, and complexity, it is a useful method to fine-cut the remainder of the wire-cut workpiece as described above. The method is economical and simple, and is helpful to improve the quality of wire cutting finishing.