Datamation mapping method applying to flat pattern workpieces

Abstract

The invention discloses a datamation plotting method applied to a planar workpiece. The method involves a conventional XY platform, a camera control PC and a software. The XY platform drives a camera to perform equidistant stepping displacement, picks up and samples images of corresponding local parts of a parent part and sends sample pictures together with XY coordinate parameters corresponding to image pickup-sampling stages into the PC for storage so that the shape of the parent part is divided into a plurality of local orthogonal projection sample pictures; the PC orderly restores and arrays the sample pictures on the screen of the PC according to the XY coordinate parameters and splices again a whole orthogonal projection picture for the parent part; and by utilizing the picture processing software of the PC, a plotting line graph of the parent part of the workpiece is formed by employing a person to carry out outlining, tidying and smoothly connecting in the orthogonal projection spliced picture of the parent part so that a foundation is laid for subsequent scale and digitalized workpiece processing. The method has the advantages of simple involved apparatuses, convenient operation and use, high measurement accuracy, strong adaptability, low cost, etc.

Description

technical field [0001] The invention relates to the technical field of measurement and mapping of workpieces and samples in reverse engineering, in particular to a non-contact data-based surveying and mapping method. Background technique [0002] In the process from original design to large-scale production of industrial products, it is generally necessary to use reverse engineering, that is, to obtain parameters and data suitable for mechanized and automated processing by measuring and mapping the original designed workpiece or hand-made sample, as basis for subsequent production. At present, there are four commonly used measurement and mapping methods for master parts in reverse engineering: manual copying, optical scanning ceremony, touch number system, and laser three-dimensional scanning. Among them, the manual copying method is the most primitive and backward. Only relying on manual copying and conversion, the accuracy is poor and random, and it is no longer suitable ...

AI Technical Summary

Problems solved by technology

Among them, the manual copying method is the most primitive and backward. Only relying on manual copying and conversion, the accuracy is poor and random, and it is no longer suitable for the needs of large-scale production and processing; the optical scanning ceremony is only suitable for small thickness and light weight. Thin sheet workpieces and samples are easily limited by the size of workpieces and samples, so the application area is narrow and the versatility is poor; although the touch number system is not bad in accuracy and versatility, because it works by point touch, the operation The use is cumbersome, the measurement speed is slow, and the cost of the equipment used is relatively expensive; although the laser three-dimensional scanning method has high precision and a wide range of applications, the equipment is extremely expensive and belongs to special equipment. The penetration rate is low, and it is difficult to be widely used in general enterprises.

In the actual processing and production process, although most of the workpieces and samples are three-dimensional components, a large part of them are planar components with equal thickness or uniform thickness. For such types of workpieces and samples, optical scanning Ceremonial measurement cannot be adapted, the measurement efficiency of the touch number system is low, and the cost of laser 3D scanning measurement is high

How to carry out simple, efficient, accurate, and low-cost measurement and mapping of flat workpieces and samples is a problem that traditional technologies have not yet fully resolved

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