Bionic abrasion-resistant high-reliability guide rail of cast iron rolling machine tool and manufacturing method of bionic abrasion-resistant high-reliability guide rail

Abstract

The invention relates to a bionic abrasion-resistant high-reliability guide rail of a cast iron rolling machine tool and a manufacturing method of the bionic abrasion-resistant high-reliability guide rail. A guide rail is integrated with a base of a cast iron machine tool, high-hardness cylindrical and grid-shaped units which are regularly distributed, have carbide textures and are combined with a guide rail base in a metallurgy manner are arranged on a rolling portion on the surface of the guide rail by the aid of a laser cladding method, and the units and the guide rail base of the machine tool jointly form a bionic coupling area which is provided with hard portions and soft portions at intervals and has a bionic structure. The laser cladding method includes steps of uniformly coating alloy powder on the units; directly irradiating and melting the alloy powder by the aid of laser, and quickly solidifying the melted alloy powder; and obtaining micron-sized carbide, martensite, alloy carbide, WC (wolfram carbide) or TiC which have textures different from those of the base and have hardness meeting HV (Vickers hardness) 630-1150. The bionic abrasion- resistant high-reliability guide rail and the manufacturing method have the advantages that limitation that a rail surface of a cast iron guide rail is low in hardness, cannot realize pressure resistance or abrasion resistance and cannot be used independently is broken through, and shortcomings that a steel guide rail is integrally or partially inlaid on a base of a machine tool in an original mode, production process is complicated, cost is high, and the steel guide rail falls off or is peeled off easily are overcome.

Description

technical field [0001] The invention relates to a manufacturing and processing technology for improving the service reliability of a rolling machine tool guide rail used under fatigue wear conditions. It also relates to a cast iron rolling machine tool guide rail which uses a machine tool body as a machine tool guide rail. Background technique [0002] At present, the guide rails of machine tools can be divided into three categories. One is the cast iron static pressure guide rail, which is directly processed on the cast iron bed. When working, the pressure oil is passed between the guide rail and the worktable, and the static pressure of the pressure oil plays a supporting role. Complete the task of supporting the movement of the workbench. The second is the inlaid steel rolling guide rail. There is a roller frame under the workbench. The rollers on the roller frame roll on the guide rail to make the workbench move horizontally. Because the pressure peak of the roller pres...

AI Technical Summary

Problems solved by technology

Among the three kinds of guide rails, the production process of rolling guide rails inlaid with steel is the most complicated, which greatly increases the production cost and affects work efficiency, and its reliability is relatively the worst, because the firmness of the inlaid steel guide rails directly affects the reliability of the guide rails. Work still often goes wrong, and this problem has always been the focus of machine tool guideway research

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