Method of measuring outer diameter tolerance and ovality of thin-walled loop

Abstract

The invention discloses a method of measuring an outer diameter tolerance and the ovality of a thin-walled loop. A measuring table (2) is horizontally fixed above a base (1) through a sunk screw (3). A gauge frame (6) is linked with a gauge support (5) and used for fixing a measuring gauge (4) through screw bolts (7). Two moving fulcrums (8) are initially adjusted to supporting stations based on the outer diameter of a standard thin-walled loop and a measuring head of the measuring gauge is directed at zero. The measuring range of the gauge is adjusted within 0 to 2h. The standard thin-walled loop is taken out and replaced by the to-be-measured loop (9) which is rotated along the lateral fulcrum direction and the vertical fulcrum direction by at least two laps. The maximum value A and the minimum B are read out from the gauge. If (A+B) / 2<=h and A-B<=h1, errors of the measured outer diameter tolerance and the measured ovality of the measured thin-walled loop are in compliance with the machining requirement. The errors of the outer diameter tolerance and the ovality of the measured thin-walled loop can be measured once and the method of measuring the outer diameter tolerance and the ovality of the thin-walled loop is suitable for thin-walled loops with large and small outer diameters.

Description

technical field [0001] The invention belongs to the technical field of bearing ring detection, in particular to a method for measuring the outer diameter tolerance and ellipticity of a thin-walled ring. Background technique [0002] Bearing rings are generally divided into inner rings or outer rings. Thin-walled rings are called thin-walled rings. In addition to being difficult to process, thin-walled rings are prone to deformation before assembly, especially when the size is small. Large, thin-walled ferrules are more prone to deformation. [0003] For thin-walled ferrules and general ferrules with small outer diameters, special instruments are usually used to measure their outer diameter tolerance and ovality. [0004] For thin-walled ferrules with large outer diameters, the above-mentioned special instruments may deform the thin-walled ferrules because the measurement range cannot be reached, or the measurement force of the special instruments is large, which directly le...

AI Technical Summary

Problems solved by technology

[0004] For thin-walled ferrules with large outer diameters, the above-mentioned special instruments may deform the thin-walled ferrules because the measurement range cannot be reached, or the measurement force of the special instruments is large, which directly leads to inaccurate measurement results and affects Finished quality of thin-walled ferrules

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