A manufacturing method of flange type linear bushing by laser and linear bushing manufactured by the above method

Abstract

Disclosed herein are a flanged type linear bushing formed by coupling of an outer sleeve and a flange and a manufacturing method of the same. The manufacturing method includes the steps of: machining an edge of an outer sleeve at a predetermined angle for a smooth coupling between a flange and the outer sleeve; forming a recess on the outer periphery of the outer sleeve in uniform depth and widthin consideration of thickness of the outer sleeve for permitting an easy laser welding after coupling the flange and the outer sleeve with each other; machining an inside edge of flange along with inner circle of flange in a form corresponding to the recess formed on the outer sleeve to permit the easy laser welding; coupling the flange and the outer sleeve manufactured by the above steps; and welding the coupled portion, where the recess formed on the outer sleeve and the structure formed on the flange are coupled with each other, with high energy beam, or welding the coupled portion with high energy beam of good linearity while feeding filler metal of a predetermined diameter to the coupled site at a predetermined speed. The present invention can improve productivity through automation of process, obtain dimensional stability and precision, and reduce manufacturing costs by reducing the number of manufacturing processes.

Description

Technical field [0001] The present invention relates to a method for manufacturing a flanged linear bushing, and a flanged linear bushing manufactured by the method. The method includes: processing the edge of an outer sleeve at a predetermined angle so as to The outer sleeve is smoothly connected; the flange and the outer sleeve are connected; the connecting part is welded by a high-energy beam, or the connecting part is welded by a high-energy beam with better linearity, and at the same time, filler metal is supplied to the weld. Background technique [0002] Flanged linear bushings are usually manufactured by cold forging methods, brazing methods, bonding methods, shrink fitting methods, threaded connection of outer casing and flange, wedge and nut assembly methods, and stop ring fixing methods. Because the manufacturing process is more complicated, the cold forging method has more problems. If a uniform and stable structure cannot be obtained by releasing the stress generate...

AI Technical Summary

Problems solved by technology

Brazing is one of the most common methods used in metal joining, but the problem with brazing is that it degrades the base due to deformation of the material and decarburization during the brazing process due to the high temperatures required for the copper melt to flow. Increase the strength of the base metal, reduce surface hardness, and increase brittleness

In addition, the bonding method has many problems due to difficulty in controlling proper surface roughness, dimensional tolerance, maintenance of a clean surface, and environmental pollution due to bonding materials

The problem with the method of threading the outer casing and flange is that it is expensive to machine because of the high precision that must be done in the process, and the screw joint may loosen during use

[0003] The problem with the wedge and nut assembly method and the snap ring fixing method is that it is difficult to make a product of good quality because the machined part is complicated, and the manufactured product cannot remain the same because the dimensional deviation of the parts often makes assembly difficult standard quality

[0004] Moreover, another problem of the cold forging method and the brazing method in the conventional manufacturing method is that since the surface of the flanged linear bush should be turned, heat-treated, surface-treated and ground in the integral form of the flanged linear bush, Therefore, the machining process is more complicated and difficult to apply to the automatic processing of mass production

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