Processing Technology of Micro Guide Rail

Abstract

The invention discloses a machining technology of a minisize guide rail. By means of the machining technology, the wear resistance of the guide rail can be improved, and brittle fractures cannot be caused. The machining technology comprises the following steps of 1 round steel spherifying and degrading, wherein round steel is bearing steel; 2 acid pickling, wherein acid pickling is conducted on a product obtained through the step 1 to remove an oxidation layer on the surface of the product; 3 drawing forming, wherein hole drilling is conducted on the minisize guide rail after drawing forming. According to the machining technology of the minisize guide rail, due to the fact that a structure of an induction coil is adopted, high-frequency heat treating equipment can quench the two side faces of the minisize guide rail in a targeted mode, the hardness of the side faces of the minisize guide rail is improved in a targeted mode, and therefore the minisize guide rail achieves the good wear resistance; the middle of the minisize guide rail is relatively low in hardness and has the good toughness, and therefore the condition that the brittle fractures occur in the using process of the minisize guide rail can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of micro-guide rail processing, and in particular relates to a micro-guide rail processing technology. Background technique [0002] Micro guide rails belong to a class of linear guide rails with smaller specifications. Due to the manufacturing defects of the prior art, the micro guide rail is either poor in wear resistance or prone to brittle fracture. At present, the existing micro guideway production process includes the step of spheroidizing and degrading the round steel, the pickling process step, the drawing forming step, the drilling step and the quenching step. Wherein, the punching step is completed in the quenching step. Because the quenching step improves the hardness of the workpiece, if the drilling step is after the quenching step, then due to the increased hardness of the workpiece, higher requirements are placed on the drill bit when drilling, and even the workpiece cannot be drilled. In o...

AI Technical Summary

Problems solved by technology

Since the quenching step increases the hardness of the workpiece, if the drilling step is after the quenching step, due to the increased hardness of the workpiece, higher requirements are placed on the drill bit during drilling, and even the workpiece cannot be drilled.

In order to solve this problem, the hardness requirement should be appropriately reduced, but the wear resistance of this miniature guideway is poor

If the drilling step is first, higher hardness can be obtained to obtain good wear resistance. Since the micro guide rail is relatively narrow, the wall thickness is relatively thin after drilling. The current quenching process is for the entire micro guide rail. Quenching is carried out on the surrounding surface, so that the hardness of the drilling position of the micro-guide rail is correspondingly increased, so that the micro-guide rail is prone to brittle fracture at the drilling position

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