General type body-in-white three-dimensional measuring and positioning device and positioning method

Abstract

The present invention discloses a general type body-in-white three-dimensional measuring and positioning device and a positioning method. The device comprises a bottom plate, a main positioning mechanism and a body-in-white vehicle supporting mechanism, wherein the main positioning mechanism and the body-in-white vehicle supporting mechanism are arranged on the bottom plate. The main positioning mechanism comprises a supporting sleeve rod and a plurality of rotatable main positioning pins. The lower end of the supporting sleeve rod is provided with a supporting disc. The plurality of rotatable main positioning pins are arranged at the upper end of the supporting sleeve rod. The supporting disc is provided with a spherical cavity and a rectangular groove which is inwardly extending along the axis of the supporting sleeve rod. The two shorter side surfaces of the rectangular groove are tangent to the spherical cavity. The spherical cavity is internally provided with a connection swivel piece matched with the spherical cavity. The lower side of the bottom plate is correspondingly provided with a locking oil cylinder corresponding to the supporting sleeve rod. The piston rod of the locking oil cylinder upwardly passes through the bottom plate to be in threaded connection with the connection swivel piece. The main positioning mechanism and the bottom plate are flexibly connected, so that main positioning pins can be conveniently aligned with positioning holes in a body-in-white vehicle. The device and the method can be applied to the body-in-white three-dimensional measurement of multiple types of vehicles, and the advantages of simple conversion procedure and high positioning efficiency are realized. Meanwhile, the positioning mechanism is not easily damaged.

Description

technical field [0001] The invention relates to a measuring device, in particular to a supporting and positioning device for three-coordinate measurement of a body in white, which is applicable to various vehicle types. Background technique [0002] In the process of automobile manufacturing and production, in order to control the quality of the body, it is necessary to accurately measure the body in white to ensure that the dimensions of each part of the body meet the design requirements. In the prior art, the measurement of the body-in-white is usually accomplished by using a three-coordinate measuring machine. First of all, we need to place the body-in-white on a measurement positioning bracket so that the body-in-white can be positioned reliably, so as to determine the measurement origin of the body-in-white, and then use the corresponding three-coordinate measuring instrument to accurately measure the quality control points of the body-in-white , to determine whether t...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing three-coordinate measurement and positioning device of the body-in-white cannot be used universally between different models, the preparation workload is large and the efficiency is low when switching the measurement model, and the gap between the positioning hole of the body-in-white and the positioning mechanism For the problems of difficult alignment and easy damage due to collision, a general-purpose body-in-white three-coordinate measurement positioning device and positioning method are provided. , High positioning efficiency, and the positioning mechanism is not easy to damage, which is beneficial to prolong the service life

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