Lead ring and its processing technology

Abstract

The invention discloses a wire leading ring and a processing technology thereof. The processing technology comprises the steps of step I, obtaining a wire leading ring blank through a pressing molding method; step II, sintering the wire leading ring blank; step III, carrying out rough processing on the wire leading ring blank in the step II; step IV, carrying out drilling processing on the wire leading ring in the step III, so as to process a threading hole in the surface of the wire leading ring; step V, carrying out reciprocating grinding on the threading hole processed in the step IV in the depth direction of the threading hole till the extension direction of a line formed on the side wall of the threading hole through grinding is parallel to the depth direction of the threading hole; step VI, carrying out finish processing on the wire leading ring in the step V; and step VII, carrying out polishing treatment on the wire leading ring in the step VI. The threading success rate of the wire leading ring obtained through the method can reach 99.8%.

Description

technical field [0001] The invention relates to the field of slow-moving wire-walking parts processing, more specifically, it relates to a lead ring and its processing technology. Background technique [0002] Slow-moving wire is a kind of CNC machining machine tool that uses continuously moving thin metal wires as electrodes to perform pulse spark discharge on workpieces to generate high temperatures above 6000 degrees to etch metal and cut workpieces. The principle of slow wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. [0003] In order to be able to play a good role in guiding the wire, the lead ring is one of the indispensable parts on the slow wire walking machine. At present, the process of producing lead rings in the factory includes: 1. First, press the lead rings; 2. Roughly grind the lead rings; 3. Process the threading holes for the metal wires on the lead rings...

AI Technical Summary

Problems solved by technology

[0004] However, in the lead ring processed in the above process, since the aperture of the threading hole is relatively small, the extension direction of the lines at the sidewall of the threading hole is perpendicular to the extending direction of the threading hole, so when the metal wire passes through the threading hole, the metal wire and the threading hole There is a large friction force between the side walls of the hole, which makes it difficult for the wire to pass through the threading hole, resulting in a greatly reduced threading success rate

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