: The electrode wire wound on the wire conveying barrel moves at a certain speed along the rotation direction of the wire conveying barrel. The workpiece installed on the machine tool workbench is formed and moved relative to the electrode wire according to the predetermined control trajectory. One pole of pulse power supply is connected to the workpiece and the other pole is connected to the electrode wire. A certain discharge gap is always maintained between the workpiece and the electrode wire and the working liquid is sprayed. The spark discharge between the electrodes corrodes a certain gap, and continuous pulse discharge cuts out the workpiece of the required shape and size. medium wire-trapping technology points out here that the "middle wire-trapping" electric spark wire cutting machine has significantly improved processing quality than fast wire-trapping electric spark wire cutting , but it still belongs to the category of high-speed wire-trapping , and the cutting accuracy and finish still have a big gap with low-speed wire-trapping machines, and the accuracy and finish retention also need to be further improved.
Medium wire cutting
How to determine the processing allowance of the middle wire cutting machine:
1. Experience estimation method: Determine the processing allowance of the middle wire cutting machine tool based on experience. To prevent insufficient processing allowance and scrap workpieces, this method has a large deviation in estimation, so this method is only suitable for single-piece and small-scale production.
2. Table lookup correction method: According to practice and experimental research, record the remaining amount of rough and process allowance data in the table. When determining the processing allowance, obtain the required data and then modify it according to the actual processing conditions. When checking data, please note that the data is nominal. The processing allowance of symmetrical surfaces (axial holes, etc.) is the bilateral allowance, and the processing allowance of asymmetrical surfaces is the unilateral allowance. This method is widely used.
3. Analysis and calculation method: Calculate based on the calculation of the spare part and data of the machining part. This method can determine the spare part of the machining workpiece, but it must be carried out with test data and first-class calculation methods, so it is less used at present.
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