Process for machining isolated steel belt of slewing bearing steel ball

Abstract

The invention discloses a process for machining an isolated steel belt of a slewing bearing steel ball, comprising the steps of: machining strip materials by the procedures of feeding bar materials, leveling and milling end faces; roughly rounding: roughly rounding the strip materials to process arced strip materials with the radiuses approaching that of product rings; welding: carrying out butt welding on the arced strip materials to obtain rings with the radiuses approaching that of the product rings; finely rounding: finely rounding the rings till a finally required cylindricity of a product is obtained; cutting orifices: sequentially carrying out laser cutting on the finely rounded rings to obtain rolling-body orifices; and boring: boring and trimming the rolling-body orifices to obtain the diameter of the orifice required finally. In the invention, because the process is regulated in that the rolling-body orifices are subjected to laser cutting after fine rounding is carried out, the strength of the strip materials is consistent along the length direction; elastic deformation and plastic deformation of the materials are uniform and consistent in the processes of roughly rounding and finely rounding and no inflection points are generated along an arc direction, so that ribbed roundness of a workpiece is effectively avoided; and reshaping is not needed so that the cylindricity precision of products is ensured.

Description

technical field [0001] The invention relates to the technical field of steel ball isolation steel belts for slewing bearings, and more specifically, to a processing technology for steel ball isolation steel belts for slewing bearings. Background technique [0002] Slewing bearing rolling element isolation steel belt is generally used for steel ball slewing bearings of wind power generation equipment and some large construction machinery equipment. There are several window holes for accommodating the rolling elements at intervals, the function is to keep the rolling elements at a certain interval in the circumferential direction, so as to improve the lubrication conditions of the rolling elements and reduce the noise and vibration of the bearing. Generally, the outer dimension is larger, the number of rolling element window holes is larger, and the accuracy requirements of the window hole position, cylindricity and the cylindricity of the overall annular isolation steel belt ...

AI Technical Summary

Problems solved by technology

Because the rolling element window hole is processed on the strip material, there is a difference in the bending strength of the strip material, that is, the material strength of the window hole part is lower than that of the non-window hole part, so the arc surface is formed more in the process of rough rounding and fine rounding. Prismatic cylindrical surface, resulting in product cylindricity not meeting the design requirements

In order to meet the product design requirements, some manufacturers have added a shaping process after fine rolling, which increases the product cost, and the operation is cumbersome, labor-intensive, low production efficiency, and unstable product quality

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