Feeding device for rotary table of electromachining lathe

Abstract

A feeding device for a rotary table of an electromachining lathe is mounted in a central hole of a spindle of the rotary table, and comprises an insulation gland, a carbon brush shaft, carbon brush mechanisms, a fluid prevention ring, and a power inlet piece, wherein at least two stacked carbon brush holes are formed in the carbon brush shaft; one carbon brush mechanism is mounted in each carbon brush hole, and comprises a carbon brush head, an elastic piece and an adjusting piece; fastening holes are formed in the carbon brush shaft and located on at least one side of the corresponding carbonbrush holes; and a fastening piece is arranged in each fastening hole and used to press the corresponding adjusting piece. The device adopting the technical scheme has the advantages that smart structural designs of the carbon brush shaft and the components are adopted; the carbon brush heads are mounted in the carbon brush holes in the carbon brush shaft, and spaces of the carbon brush shaft andthe central hole of the spindle of the rotary table are ingeniously utilized through the stacking structure, so that precise and uniform sliding fit conduction of the carbon brush heads can be achieved; and through the adjusting pieces, the whole carbon brush mechanisms are reliable, firm and adjustable for fixation, so that the sliding fit between the carbon brush heads and the spindle of the rotary table is more reliable, poor contact is prevented, reliable feeding is ensured, and high feeding capability is achieved.

Description

technical field [0001] The invention relates to the technical field of electric discharge machining machine tools, in particular to a feeder for the turntable of the electric machining machine tool which is arranged in the middle hole of the main shaft of the turntable. Background technique [0002] Electromachining is a processing method that uses the discharge corrosion effect between the electrode and the workpiece, and generally uses a high-frequency pulse circuit for discharge. Existing EDM machine tools are usually operated by three-axis linear motion. Of the two electrode wires drawn from the control cabinet, one is connected to the spindle head that holds the electrode, and the other is connected to the workpiece or the metal magnetic attraction for placing the workpiece. On the table, the defect of this kind of EDM machine tool is that the workbench used to install the workpiece is a fixed workbench, which cannot drive the workpiece to rotate. An additional rotatin...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a power feeder for the turntable of an electric processing machine tool, the purpose of which is to solve the poor contact between the existing carbon brush and the main shaft when the processing power supply of the turntable spindle in the prior art is connected to the machine tool. , The conductive structure of the carbon brush is too bloated, etc., so that the power supply of the turntable is reliable, the structure is compact, and the internal space of the turntable can be fully utilized

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