Minitype flange external ring bearing edge guard composite abrasive grinding wheel trimming method

Abstract

The invention provides a dressing method for a compound grinding wheel of a miniature flange outer ring bearing sidewall. The method is based on the principle of numerical control. Through the control of the numerical control grinding machine, the three numerical control axes are driven by the servo motor to move the carriage and the arc dresser Rotation, the single-point diamond pen is driven by the carriage and the diamond pen holder to complete eight linkage methods such as trimming the oblique line, surpassing the grinding wheel, diamond pen rotation, empty straight line, and trimming the oblique line. The line angle and the included angle of the forming grinding wheel can be adjusted arbitrarily. The dressing method of the present invention has high precision after dressing the grinding wheel, the vertical difference between the rib and the outer diameter is less than 1 μm, the transition fillet Rmax is 0.2mm, and the rib shape is only concave but not convex; the initial oblique angle α It is convenient to adjust the included angle β with the forming grinding wheel, and the dressing method is efficient.

Description

Technical field: [0001] The invention belongs to the technical field of grinding wheel shaping and dressing, and mainly relates to a dressing method of a composite grinding wheel for miniature flange outer ring bearing ribs. Background technique: [0002] Flange outer ring deep groove ball bearings are widely used in precision instruments and instrumentation industries. Flange outer ring, such as figure 1 As shown, because of its high precision and difficult processing, it has always been a difficult point in the grinding process. As the installation reference, the outer diameter and rib of the bearing are mainly ground in two ways at present: one is the grinding of the outer diameter and the rib separately, and the other is the compound grinding of the rib and the outer diameter. The dressing of the former grinding wheel is simple, such as figure 2 As shown, it is based on the principle of the turning method, and uses a single-point diamond pen to dress the outer diamet...

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Problems solved by technology

[0003] In order to solve the problem that the sharp corner of the grinding wheel produced by dressing the outer diameter and end face of the grinding wheel completed by the single-point diamond pen based on the principle of numerical control interpolation is not sharp, and the transition fillet after grinding is out of tolerance, the purpose of the present invention is to provide a micro convex The dressing method of the compound grinding wheel for flanged outer ring bearing ribs is based on the principle of numerical control. By controlling the linkage of the numerical control axes, the grinding wheel has sharp corners after forming, and the grinding precision of the miniature flanged outer ring bearing ribs is high and transitional. Rounded corner standard, one clamping can complete the grinding of outer diameter and rib at the same time

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