Wire cutting machine

Abstract

The invention discloses a wire cutting machine. An upper wire arm guide wheel lifting device comprises an upper wire arm guide wheel, a parallel four-bar mechanism, a movable wheel and a vertical guide plate; a wire storage cylinder device comprises a wire storage cylinder, a first transmission shaft, a second transmission shaft, a transmission wheel A, a transmission wheel B, a transmission wheel C, a transmission wheel D and a nut; and a tension control device comprises a winding cable disk, a counter weight, a swing arm and a pinch roller. Compared with the prior art, the wire cutting machine disclosed by the invention has a simple and compact structure; the upper wire arm guide wheel is convenient to adjust, and the adjustment precision is high; the wire storage cylinder operates stably; and a wire electrode is controlled by constant tension.

Description

technical field [0001] The invention relates to a wire cutting device, in particular to an improved invention of a wire cutting machine. Background technique [0002] In the prior art, the wire cutting machine has the following deficiencies: 1. In order to ensure the cutting quality of the wire cutting machine, the distance between the guide wheel of the upper wire arm of the wire cutting machine and the workpiece must be adjusted, and the guide wheel is required to be connected with the workpiece. The surface is vertical. In the prior art, the lifting device of the upper wire arm guide wheel of the wire cutting machine is composed of a column, an upper wire arm, and a lower wire arm. The adjustment of the distance between the upper wire arm guide wheel and the workpiece is the upper wire arm. The up and down is driven by screw transmission in the guide groove of the column. The disadvantages are that the pulling accuracy is poor, the operation is cumbersome, and the structu...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the wire cutting machine has the following deficiencies: 1. In order to ensure the cutting quality of the wire cutting machine, the distance between the guide wheel of the upper wire arm of the wire cutting machine and the workpiece must be adjusted, and the guide wheel is required to be connected with the workpiece. The surface is vertical. In the prior art, the lifting device of the upper wire arm guide wheel of the wire cutting machine is composed of a column, an upper wire arm, and a lower wire arm. The adjustment of the distance between the upper wire arm guide wheel and the workpiece is the upper wire arm. The up and down is driven by screw transmission in the guide groove of the column. The disadvantages are that the pulling accuracy is poor, the operation is cumbersome, and the structure is not compact; It is driven by a motor, and the motor is directly installed on the base of the wire storage drum. One shaft end of the wire storage drum shaft is connected in series with the motor shaft, and then the walking mechanism is driven by the other shaft end. The disadvantage of the above structure is , the vibration and forward and reverse inertial force of the motor will affect the smooth operation of the wire storage drum and increase the load of the wire storage drum; 3. During the continuous cutting and continuous use of the wire electrode wire of the wire cutting machine, due to temperature changes , electrode wire wear and other factors, the tension force of the electrode wire will gradually lose, which will greatly affect the processing quality of wire cutting, so a tension control device must be installed to control the constant tension of the electrode wire. In the prior art , there is a tension control device with the help of spring thrust, and a tension control device with the help of a cylindrical linear guide and spring thrust, but they all have the defects of complex structure and unstable tension

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