A wire-feeding mechanism and method for a wire-cutting machine

Abstract

The invention discloses a wire winding mechanism and a wire winding method of a wire cutting machine. The wire winding mechanism comprises a base plate, a wire storage barrel, a first guide wheel, a second guide wheel, a third guide wheel, a fourth guide wheel and a wire electrode, wherein a guide rail device, a pulley block tensioning device, a tension stroke indicating plate and a pointer are arranged on the base plate; the pulley block tensioning device comprises a balancing weight, a fixed pulley block, a movable pulley block, a movable pulley block fixed plate and a guide rail device limit block; the guide rail device comprise a guide rail and a sliding block; the fixed pulley block, the guide rail, the tension stroke indicating plate and the guide rail device limit block are fixed to the bottom plate; the movable pulley block, the balancing weight and the pointer are fixed to the movable pulley block fixed plate; the movable pulley block fixed plate is fixed to the sliding block of the guide rail device; the sliding block is fixed to the guide rail and slides along the guide rail; the guide rail device limit block is arranged at the tail end of the lower part of the guide rail. The wire winding mechanism and the wire winding method of the wire cutting machine have the advantages that the structure is simple, the manufacturing is simple, the cost is lower, the machining precision and the processing efficiency of wire cutting are better improved, and the economic benefits are higher.

Description

technical field [0001] The invention relates to the field of wire-cutting machine tools, in particular to a wire-feeding mechanism and method for constant tension of the wire-cutting machine. Background technique [0002] The wire cutting machine is a CNC machine tool that uses the reciprocating motion of the electrode wire to process the conductive body. During the processing, the electrode wire needs to reciprocate to facilitate heat dissipation and remove processing waste. The accuracy and size of the surface of the workpiece have a direct impact. In the traditional wire-feeding mechanism, due to the discharge of the electrode wire and its own force, the electrode wire will relax, which directly affects the tension of the electrode wire, resulting in uneven force on the electrode wire, resulting in deformation of the electrode wire and affecting the quality of the processed workpiece. Indicates the roughness, which affects the processing accuracy; At present, there are m...

AI Technical Summary

Problems solved by technology

In the traditional wire-feeding mechanism, due to the discharge of the electrode wire and its own force, the electrode wire will relax, which directly affects the tension of the electrode wire, resulting in uneven force on the electrode wire, resulting in deformation of the electrode wire and affecting the quality of the processed workpiece. Indicates the roughness, which affects the processing accuracy; At present, there are many solutions to the constant tension of the wire-cutting machine during the operation of the wire-cutting machine, but the structure of the constant-tension wire-feeding mechanism of most wire-cutting machines is relatively complicated, or the requirements for electromechanical control are relatively high. high, which makes the manufacturing more complicated and the cost is higher; although the hammer type constant tension wire walking method has a simple structure, due to the large inertia of the counterweight, the initial tension of the electrode wire is too large during operation, which is easy to cause the electrode wire Phenomenon of pulling off

At the same time, due to the short maximum length of the current tensioning mechanism that can tension the electrode wire, during the wire cutting process, when the wire cutting machine tool needs to adjust the machine head upward or downward along the Z-axis direction, it is often necessary to loosen the electrode first. After adjusting the machine head up or down along the Z-axis direction, and then reinstalling it, this operation is not only time-consuming and laborious, but also requires certain professional skills to complete, which seriously affects the processing efficiency of wire-feeding wire cutting.

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