, optical system and mechanical system. The first domestic use of ruby laser to process natural diamond wire drawing die was successful. Later, it was applied to the processing of the compression zone and the sizing zone of the polycrystalline die drawing die. Practice has proved that the performance of ruby laser drilling machine mainly depends on high-quality ruby. The output spot of ruby should be round and the center point should be stable and clear.
The leap of laser processing wire drawing dies started after the advent of a continuous laser with a microprocessor using YAG material (aluminum garnet). By inputting the die hole program prepared in advance into the computer, the rough machining of the entire die hole can be automatically completed, which greatly simplifies the molding process and ensures various required standard shapes of the die hole.
The range of laser perforation is 0.01-1 mm, and the ratio of hole depth to aperture can reach 50 to 100. The perforation efficiency is high, and it is suitable for rough machining of small hole drawing dies within 1mm.
Electrochemical machining is to use the electrochemical cathodic dissolution of metal in the electrolyte to process the workpiece into shape. This method is mainly used in the processing of cemented carbide wire drawing dies. Since the polycrystalline die is composed of various metals and diamonds, the reaction between electrodes during electrolytic machining is quite complicated, so this method is not suitable for the processing of polycrystalline die wire drawing dies. .