Precision metal processing parts fast wire processing technology to improve production efficiency

With the progress and development of science and technology, especially the development of high-tech represented by computer and technology, the connotation and extension of precision metal processing parts technology have undergone earth-shaking changes. CNC machining technology has made significant changes in mechanical manufacturing technology, and is a representative and excellent manufacturing technology.

At present, it has been widely used in metal parts processing, mold, steam parts and other industries. At present, many precision hardware processing manufacturers use fast wire processing technology.

Under the new situation of my country's industrial technology development, the technology of precision metal processing parts has developed rapidly. CNC machining consists of digital and symbolic information to control the machine tool to achieve automatic rotation. CNC machining has undergone long-term development and has become a broad manufacturing technology in the field of hardware machining.

CNC machining has two characteristics:

First, it can greatly improve the accuracy, including machining quality and machining time error accuracy;

Second, it can improve the repeatability of the machining quality, stabilize the machining quality, and keep the quality of the machined parts consistent.

In other words, the quality and machining time of precision hardware machined parts are determined by the CNC program, not by the machine tool operator. The molybdenum wire of the wire cutting machine is mutually controlled by the storage tube and the upper and lower wire frames. The linearity and vertical accuracy of the molybdenum wire are controlled by the guide wheels of the upper and lower wire frames, and the metal parts are processed by the pads between the upper and lower wire frames. The molybdenum wire and the processed part are connected to the positive and negative poles of the pulse power supply, respectively. Precision metal processing parts are melted by the high temperature generated by the electric discharge, and the excess part of the metal part is removed to obtain the desired part shape. Wire cutting machines are divided into slow wire routing machines and fast wire routing machines.

The machining accuracy of the slow line is high, but the cost is also high. Due to the advantages of simple structure, high production efficiency and low production cost, fast wire feeders are widely used in most hardware manufacturers in my country. Although the machining accuracy is low, it can generally meet the production needs. From the overall development trend, slow wire cutting machine is the development direction.

We usually refer to wire cutting machines as fast moving wire rod machines. Fast-travel wire processing is known for high-speed wire-travel processes during cutting. Quick-step wire processing machine is an original electric processing machine tool in my country. After decades of continuous improvement and development, it has become an important means of hardware processing. It can meet the requirements for the manufacture of complex parts such as the processing of medium and low-grade hardware parts, and has a considerable share in the medium and low-grade market.

The advantage of the fast wire processing machine is that it has a good price/performance ratio. Due to its practicality and economy, it has a large market in China. The traditional fast wire processing adopts one-time cutting processing, the processing efficiency is about 40m^2/min, the surface roughness is about Ra3.0μm, the surface line pattern is obvious, and the processing accuracy is about 0.002. In order to improve the processing quality of precision hardware parts, Manufacturers of wire-feeding machines improved the relevant parts of the machine with reference to various cutting processes, and the so-called 'medium wire-feeding machine' appeared. CNC accuracy, pulse power supply, wire feeding system and machine tool processing database have been greatly improved. The machining accuracy of hardware parts is improved, and the surface quality of the parts is improved. At present, the technical indicators of the central wire cutting machine: one-time cutting efficiency Ra≤1.0μm, surface roughness min, Ra≤1.0μm, the average efficiency is 50 μ^2/min, and the processing surface gloss has no obvious cutting stripes. The machining accuracy is 0.01. These performance metrics look good, but it should be pointed out that getting them requires making sure every link is good. Once there is a difference, such as the concentration of the working fluid, the loss of the electrode wire will change, and the stability of the processing quality will be affected. Therefore, hardware parts manufacturers must strengthen the control of each link in the process of using wire processing machines to ensure the quality of hardware parts processing.

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