Robot for measuring straightness of stepped hole

Abstract

The invention discloses a robot for measuring the straightness of a stepped hole for solving the technical problem that the straightness parameter of the stepped hole cannot be measured by a non-contact measurement method mentioned in the prior art mentioned in the background art. The technical solution adopted is as follows: the robot for measuring the straightness of the stepped hole comprises acontractile deep hole self-centering mechanism placed in the hole, a plurality of traveling mechanisms for driving the contractile deep hole self-centering mechanism to move in the stepped hole, a laser measuring head, a photoelectric processing system for collecting a laser signal of the laser measuring head, and a PSD position adjusting mechanism for adjusting a light receiving position of thephotoelectric processing system. The robot for measuring the straightness of the stepped hole has the advantages of implementing a wedge-shaped elastic supporting mechanism with a flexible adjustmentdetermining axis, implementing the sliding support of the end part of a measuring rod, adapting to the change of the aperture and spanning a ladder with a certain height through the traveling mechanisms, thereby adapting to the measurement of the straightness of deep holes, blind holes and stepped holes.

Description

technical field [0001] The invention relates to a tool for measuring the straightness of holes, in particular to a robot for measuring the straightness of stepped holes. Background technique [0002] There are stepped holes with different diameters in vehicles, airplanes, ships, petroleum equipment and large medical equipment. The processing and testing technology of these hole parts directly affects the accuracy of the deep hole parameters of the parts. Straightness measurement is a basic item in aperture geometric measurement, and is the basis of aperture roundness and coaxiality measurement, and is highly valued in production. [0003] The straightness error of deep hole refers to the deviation of the actual axis of the aperture from the ideal axis. At present, the traditional measurement methods of aperture straightness mainly include straightness plug gauge, snap gauge, arm method, inductive strain gauge and other methods. very big. Moreover, the test is more inconv...

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