When a wire cutting machine is delivered to the household, the "machining performance" of the machine tool is basically finalized, and the structure of the molybdenum wire positioning "guidance system" guide wheel assembly determines the quality of the wire cutting surface to a certain extent. From the analysis of the working principle and working environment of the guide wheel assembly, we can have actual reference value for keeping the wire cutting machine in a good state of machining surface roughness. Let’s start with the structure of the guide wheel assembly. Whether it is a fast wire feeder or a middle wire feeder modified on the basis of the fast wire feeder structure, the guide wheel assembly is divided into two parts: “main pulley assembly” and “auxiliary guide wheel assembly”. Whether it is the main pulley assembly or the auxiliary pulley assembly, it is composed of the following main components: Guide roller sleeve, guide roller, bearing, sleeve, nut.

The development of science and technology has promoted the development of the industry, and has played a huge role in the processing of molds, especially complex molds, especially the EDM (hereinafter referred to as wire cutting) processing method because it can process complex straight-through and small taper. It is not limited by the hardness of the workpiece, and can process materials with higher hardness, which has been widely used in mold processing.

It has been several years since the WEDM has entered the market. In fact, the name of WEDM is not yet included in the national standard CNC machine tool product naming, and some are just reciprocating wire cutting machine tools. It is a term created by the manufacturer to distinguish it from the previous wire cutting by adding functions to the traditional wire cutting.

In mold processing, wire-cut wire cutting is generally the last process, so it has high requirements for machining accuracy. If the mechanical accuracy of the machine tool is not good, it will directly affect the processing quality of products and molds, and eventually lead to loss of users and loss of the market. Therefore, How to judge the mechanical accuracy and structure, advantages and disadvantages is very important when selecting the type of wire cutting machine.

The cutting speed and surface quality of WEDM are contradictory. It is very difficult to obtain a high cutting speed and a good surface quality in one cutting process. Low-speed wire-cut wire EDM (LS-WEDM) has a high level of comprehensive technology, and it does not achieve the process index by one cut, but uses multiple cutting processes, that is, the first cutting uses a larger pulse Energy and current machining to obtain a higher cutting speed, at this time, the quality of the machined surface is not unnecessarily required; for the second and third cutting, the fine cooperation unit and the fine machining standard are used for step-by-step polishing to obtain Ideal machining quality and machining accuracy. Due to the limitation of its own characteristics and equipment conditions, the high-speed wire-cut wire EDM (HS-WEDM) has not been able to be popularized and applied for many times so far, so its comprehensive technology level is far lower than that of LS-WEDM. .

Taper device is one of the key components and core technologies of CNC wire cutting machine tools. With the wire-feeding machine products The continuous upgrading of tapered cutting accuracy has put forward higher requirements. Therefore, a high-precision taper device is designed, which solves the problems of rigidity, reliability, transmission accuracy and protection from the structural performance. Through application and verification, its geometric accuracy and numerical control motion accuracy have been steadily improved, and it can complete the processing of high-precision taper cutting and multiple cutting.