The wire cutting machine itself is highly demanding to use, so it is necessary to know more about it. Today, Xiaobian will introduce you to the machining and processing skills of several wire cutting machines.
In order to create an artificial environment and conditions to meet the electrical requirements, a method of bonding copper between the cut portion and the mother body and plugging the copper sheet in the cutting gap can be used to cause artificial positioning conditions and conductive conditions, so that spark machining is performed. It can be continued. The specific practices and skills are as follows:
A copper piece is attached between the cut portion and the parent material. The purpose is to ensure that the remaining part of the workpiece is fixed to the parent material during cutting, so as to ensure good positioning conditions of the wire cutting, thereby ensuring excellent processing quality of the workpiece, which can be carried out according to the following steps.
1 Firstly, according to the size of the machined workpiece, the thin copper sheet (the thickness is determined according to the condition of the wire electrode and the shape of the processing part) is cut into a strip shape, and then folded, and the well is ensured that the folded portion is long and short. The purpose of using a short copper piece is to reduce the thickness of the copper piece, so that the upper nozzle is closer to the workpiece processing part, so as to improve the processing precision;
2 Then the bent portion of the folded piece of copper is hammered flat with a small hand hammer, and repaired into a shape as shown in Fig. 3 with a brocade;
3 When inserting the copper piece into the processing part, insert the bc section into the gap according to Figure 4, and flatten the ad section so that the upper nozzle is closer to the workpiece to ensure the machining accuracy. After processing, straighten it to remove the copper piece from the gap. In this case, it should be noted that when the copper piece is bonded with 502 glue, it should be away from the remaining parts of the workpiece, so as to prevent the 502 glue from seeping into the threading hole of the guide wire just below it, causing the threading hole to be blocked. In addition, the position of the bonded copper piece should be considered symmetrically distributed, and it should be ensured that it is plugged at the same time to avoid the deviation of the workpiece, which affects the processing quality of the workpiece.
4 The copper sheets processed above are then inserted into the gap formed by the wire electrode processing, and 502 glue (ie, epoxy resin instant quick-drying glue) is dropped on the surface of the workpiece. Due to the high-pressure flushing of the EDM wire cutter, the workpiece is subjected to high pressure. If the copper plate is simply plugged to ensure conduction and fixation, the following problems are easily caused: (a) the copper sheet is too loose, and it is worried about fixing. Unreliable, unstable conductive; (b) The copper sheet is too tightly packed, and it is worried about damaging the surface of the workpiece and damaging the geometrical tolerance. Therefore, 502 glue is used to ensure that the cut portion is fixed to the parent material.