Electric spark surface hardening machine tool

Abstract

An electric spark surface strengthening machine tool, including a vibrator with a tool electrode clamped and a pulse power supply, is characterized in that: a bed including a workpiece clamping device, a carriage traveling mechanism and a transmission device is provided; the transmission device includes a geared motor , a belt reduction mechanism and a worm gear reducer, the large pulley of the belt reduction mechanism is set on the chuck shaft of the workpiece clamping device; the output of the worm gear reducer is connected with the lead screw of the carriage travel mechanism; There are several groups of sliding rails on the carriage that can be adjusted in the range of 0°-90°. The vibrator is slidably set on the sliding rails. Next, contact with the surface of the workpiece with a certain pressure. The invention solves the technical problem that the tool electrode contacts the workpiece with a constant pressure and vibrates to discharge, and can form a continuous, uniform, stable quality, and flawless large-area strengthening layer on the surface of the workpiece.

Description

Technical field: [0001] The invention relates to a metal processing equipment which acts on a workpiece with high concentration of current, in particular to an electric spark surface strengthening machine tool for processing the surface of a circular cylindrical workpiece. Background technique: [0002] EDM surface strengthening treatment mainly utilizes the thermal energy of a series of pulsed spark discharges generated between the metal workpiece and the tool electrode separated in space and time, so that the tool electrode material used as the anode is melted and coated on the surface of the metal workpiece used as the cathode. The working principle forms a strengthening layer different from the material properties of the metal workpiece itself to improve the mechanical and chemical properties of the workpiece surface such as wear resistance, corrosion resistance, and heat resistance. Because it can use materials with high mechanical and chemical properties as tool electr...

AI Technical Summary

Problems solved by technology

This not only has high labor intensity, low work efficiency, and poor uniformity of coating thickness, but also the applied pressure cannot be kept constant, which affects the stability of the quality of the reinforced layer.

Because of the lack of mature special electric spark surface strengthening machines that can achieve high-efficiency mechanized operations like lathes, milling machines, planers, and grinding machines, this advanced process has not been widely used, especially in major workpieces (such as cast iron for rolling mills) roll)

Images