Constant-tension wire moving mechanism with automatic wire feeding function

Abstract

The invention discloses a constant-tension wire moving mechanism with an automatic wire feeding function, which comprises a wire release and retract device, a tension regulation device and an automatic wire feeding device. The constant-tension wire moving mechanism is characterized in that: a first-stage tension regulation device and a second-stage tension regulation device are arranged between the wire release and retract device and the automatic wire feeding device; automatic wire breakage and wire feed are realized by setting the automatic wire feed mechanism, automatic retrieving of broken wires and waste wires can be realized, the operation is convenient, time and labor force are saved, the wire feeding efficiency and production efficiency are improved, and the wire feeding quality is increase; two stages of tension control are realized by setting the first-stage tension regulation device and the second-stage tension regulation device, changes of preceding stage wire coil tension are effectively controlled, the constant tension of the metal wire is ensured, and the processing accuracy of parts is improved.

Description

technical field [0001] The invention relates to a wire feeding mechanism of a low-speed wire cutting machine, in particular to a constant tension wire feeding mechanism with automatic wire threading function. Background technique [0002] As we all know, the wire cutting machine uses the moving wire as the tool electrode, and passes a pulse current between the wire and the workpiece, and uses the corrosion of the pulse discharge to cut the workpiece. It is often used in precision machining to ensure the quality of the parts after processing. precision. Since the metal wire is used as the working electrode, whether the wire running is stable or not directly affects the machining accuracy of the parts. The common method is to ensure the stable and uniform running of the wire by applying a constant tension to the metal wire, so how to ensure the constant tension operation of the metal wire It becomes a design difficulty of wire cutting machine. At present, the tension control...

AI Technical Summary

Problems solved by technology

In the wire feeding mechanism, the change of tension in every link of the wire operation will affect the tension in the processing area, especially the change of the winding radius of the wire coil, which has the most obvious impact on the tension, generally between 100 grams and 150 grams. If it cannot be effectively controlled, the constant tension of the wire cannot be guaranteed, which will directly affect the machining accuracy of the parts

Moreover, the wire cutting machine will break or replace the wire during use. The current wire cutting machine is mostly manual or semi-automatic when threading the wire, which seriously affects the efficiency and quality of the wire threading and reduces the production efficiency.

Images