Coaxiality detection apparatus

Abstract

The invention provides a coaxiality detection apparatus, relating to an apparatus which establishes a virtual axis to substitute a reference axis needing to be measured and employs a depth gauge to detect coaxiality deviations of various apertures and depths. A cross bar is provided with a vertical stick which is taken as a virtual reference axis for measurement. A locating piece and a jacking block are connected to the cross bar through taper pins. The cross bar is provided with connection holes used by the locating piece and the jacking block to move according to a measurement dimension. The jacking block is provided with a spring and a steel ball which are used by the jacking block to carry out short distance adjustment on the cross bar. The spring is positioned through a fastening screw. The depth gauge is installed on the vertical stick through a rule base which is fixed on the vertical stick through a taper pin. According to the invention, the vertical stick is used as the virtual reference axis, the virtual axis is established to substitute the reference axis needing to be measured, there is no need to find a relative position of the reference axis in a detection process, the coaxiality deviations of various apertures and depths are measured through the depth gauge, a structure is simple, operation is convenient, a measurement result is accurate, and the apparatus is especially suitable for a coaxiality deviation detection occasion.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a coaxiality detection device. Background technique [0002] The known coaxiality detection device adopts three-coordinates instrument to locate or manufacture mandrel, and adopts common axis method, straightness method and distance finding method to measure multiple cross-sectional circles respectively on the measured element and the reference element, and then Construct a straight line from the center of these circles according to the measured element and the datum element, and use the straight line constructed by the datum element as the common axis, then calculate the coaxiality of the datum cylinder and the measured cylinder to the common axis, and then calculate the coaxiality Deviation. Using existing measuring devices, coaxiality will be affected by many factors, such as the operator's own skills, understanding of measuring devices, drawings, process requirements, dete...

AI Technical Summary

Problems solved by technology

Using the existing measuring device, the coaxiality will be affected by many factors, such as the operator's own skills, understanding of the measuring device, drawings, process requirements, detection error of the measuring device, processing state of the workpiece, surface roughness, and detection methods The selection of the workpiece, the placement of the workpiece, the external environment, etc. will bring errors to the measurement, resulting in a large deviation in the calculated deviation value.

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