External diameter measuring apparatus of annular object and measuring method thereof

Abstract

The invention discloses an external diameter measuring apparatus of an annular object and an external diameter measuring method of the annular object. The measuring apparatus comprises a template chart; one or more annular grooves are formed on the template chart; and the external diameters and the internal diameters of the annular grooves are determined according to the standard size and the tolerance of the annular objects to be measured. The sections of the grooves are U-shaped or rectangular, and the depths of the grooves are larger than the radiuses of the annular objects. According to the external diameter measuring apparatus of the annular object and the external diameter measuring method of the annular object provided by the invention, a bead ring is pressed in the measuring grooves in the measurement process, because the annular measuring grooves take effects in template correction when the bead ring is pressed in the measuring grooves, the measuring apparatus is specifically suitable for the measurement of external diameter of the bead rings in which the specific value of D / d is very large, the method is simple, and the judgment is precise and quick. In the batch detection, the measurement result is reliable, and the labor productivity is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of measurement, and relates to an outer diameter measuring device, in particular to an outer diameter measuring device of a ring-shaped object; meanwhile, the invention also relates to a measuring method of the outer diameter measuring device of the ring-shaped object. Background technique [0002] At present, the measurement of the outer diameter of the ring traveler whose circumference is closed is mostly measured by a general-purpose measuring caliper or a diameter micrometer. In batch testing, circular through gauges or stop gauges are made according to the outer diameter tolerance of the traveler for testing. The above two detection methods are used when the ratio of the outer diameter D of the traveler to the diameter d of the steel wire is very large, for example, when it is greater than 100, not only the measurement accuracy is low, but also the speed in batch detection is very slow, and the detectio...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a device for measuring the outer diameter of a circular object, so as to overcome the shortcomings of inaccurate measurement and low efficiency when measuring batches of travellers with existing general-purpose measuring tools or stop gauges; Improve the reliability of measurement results and greatly improve labor productivity

[0005] In addition, the present invention also provides the measuring method of the outer diameter measuring device of the above-mentioned annular object, to overcome the shortcomings of inaccurate measurement and low efficiency when the existing general-purpose measuring tools or non-going gauges detect batches of travellers; The reliability of the results greatly improves labor productivity

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