Novel CNC wire cutting machine

Abstract

The invention relates to a novel CNC wire cutting machine which can effectively improve the coordinate accuracy of a horizontal plate and a longitudinal plate. The novel CNC wire cutting machine comprises a machine tool body, a workbench, a wire walking mechanism, a high-frequency pulse power supply, a liquid supply system and an electrode wire. The workbench comprises a horizontal plate, a longitudinal plate and a displacement device. The horizontal plate is arranged on the top face of the machine tool body through the displacement device. The longitudinal plate is arranged on the top of the horizontal plate through the displacement device. The displacement device comprises a bottom plate and a top plate. A thread rod is fixed at the end of the top plate in a parallel mode. A middle rotating shaft is vertically arranged on the bottom plate. A worm wheel is arranged on the middle rotating shaft through a bearing. The worm wheel is meshed with a thread face of the thread rod. A motor box is arranged on the bottom plate. The motor box comprises a speed reducing motor, a worm and a worm adjusting sleeve. One end of the worm is arranged at the output end of the speed reducing motor. Spiral-shaped gear teeth meshed with the worm wheel are arranged on the worm. The thickness of the gear teeth are gradually increased from one end to the other end in the axial direction. The other end of the worm moves relatively in the axial direction in a worm adjusting sleeve.

Description

technical field [0001] The invention relates to a numerically controlled machine tool, in particular to a novel CNC wire cutting machine. Background technique [0002] CNC wire cutting machine, also known as CNC wire cutting machine tool, uses a moving metal wire (molybdenum wire, tungsten wire or copper wire, etc.) Pulse current to generate pulse discharge for cutting processing; during the processing, the electrode wire passes through the pre-drilled small hole on the workpiece, and is driven by the wire-feeding mechanism to move axially through the guide wheel, and the workpiece passes through the insulating plate Installed on the workbench, the CNC device moves along the X and Y coordinate directions according to the instructions of the processing program to synthesize the required plane trajectory such as straight lines and arcs. While moving, discharges are continuously generated between the wire electrode and the workpiece. Corrosion phenomenon, the working fluid is ...

AI Technical Summary

Problems solved by technology

[0002] CNC wire cutting machine, also known as CNC wire cutting machine tool, uses a moving metal wire (molybdenum wire, tungsten wire or copper wire, etc.) Pulse current to generate pulse discharge for cutting processing; during the processing, the electrode wire passes through the pre-drilled small hole on the workpiece, and is driven by the wire-feeding mechanism to move axially through the guide wheel, and the workpiece passes through the insulating plate Installed on the workbench, the CNC device moves along the X and Y coordinate directions according to the instructions of the processing program to synthesize the required plane trajectory such as straight lines and arcs. While moving, discharges are continuously generated between the wire electrode and the workpiece. Corrosion phenomenon, the working fluid is injected through the nozzle to take away the galvanic corrosion products, and finally leaves the slit trajectory line cut by the filament on the metal workpiece, so as to meet the processing requirements of separating one part of the metal from another part of the metal; the existing The most advanced CNC wire cutting machine, its workbench includes a transverse plate and a longitudinal plate, the transverse plate and the longitudinal plate are superimposed on each other through the roller shaft, and the movement in the two coordinate directions of X and Y is realized through the traction device, but this method not only coordinates The precision is limited, and the moving speed of the horizontal plate and the vertical pole cannot be adjusted. At the same time, during the wire cutting process, because the traction device does not have the function of limiting, it is easy to cause the table to shake and affect the processing accuracy of the workpiece.

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