Three-dimensional homogeneous entity nondestructive measuring device and method

Abstract

The invention discloses a three-dimensional homogeneous entity nondestructive measuring device and method. On the basis of the relation between force and moment balance and entity mass in a lever balancing system, figuring out the mass of each sheet of the measured entity C1 according to static balancing theory through measuring stress variations of different positions of the entity in the lever balancing system; establishing an equation set of the mass of each sheet and the contained micro unit body and an equation set of a gravity center coordinate; solving the equation set through intelligent calculation; obtaining the mass and spatial value of each unit body; and obtaining three-dimensional digital information of the measured entity C1 through graphic reconfiguration. The three-dimensional homogeneous entity nondestructive measuring device and method, disclosed by the invention, belongs to the mechanical non-contact measurement, an has the advantages of simple equipment, low cost,capability of realizing automatic measurement, high measuring speed, less measuring data and simplicity in reconfiguration and can be singly used for detecting defects of interior air holes of mechanical parts; and the measuring accuracy is higher than the measuring accuracy of the traditional domestic equipment.

Description

technical field [0001] The invention relates to a three-dimensional homogeneous entity measuring method and device, in particular to a three-dimensional homogeneous entity non-destructive measuring device and method. Background technique [0002] With the in-depth development of modern manufacturing technology, rapid prototyping technology, and reverse engineering technology, the theoretical research on 3D solid nondestructive measurement technology and the development of high-precision, low-cost 3D solid nondestructive measurement technology have more and more important practical significance. Both the contact probe measurement method and the optical non-contact measurement method of three-dimensional entities that appeared in the early days of product reverse engineering technology cannot measure the internal contour of the object, and there are blind spots in optical measurement. Although the existing nuclear magnetic resonance imaging and CT scanning methods can measure ...

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Problems solved by technology

This not only complicates the structure of the measurement device, but also increases the cost and difficulty of operation; moreover, a wide variety of data acquisition methods will not only affect the measurement speed but also introduce more measurement errors, resulting in reduced measurement accuracy and measurement stability.

In addition, the above-mentioned digital measurement device for 3D homogeneous solids can only perform non-destructive measurement and contour reconstruction for general homogeneous solid bodies and homogeneous 3D solids with internal contours that communicate with the outside. It is a homogeneous entity whose internal contour is not connected to the external, and there is nothing to do

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