Method of inspecting 3d scanned data using parametric tolerance

Abstract

There is provided a method of inspecting 3D scanned data using parametric tolerances, with the method including setting the number of parametric tolerance objects to be equal to that of allowable tolerances in the design data of an inspection object, connecting the design data of the inspection object with the predetermined parametric tolerance object without directly inputting the allowable tolerance of each field into the design data of the inspection object, and automatically changing the allowable tolerance value of the field connected to the design data when the parametric tolerance value is changed. Consequently, each tolerance value corresponding to a design data field does not need to be edited all over again when a range of the allowable tolerance is changed according to the design modification. The allowable tolerance used in the design data is classified and set as the parametric tolerance and the design data is connected with the predetermined parametric tolerance classified according to the allowable tolerance. Then, measurement data of the inspection object measured through a scanner and the design data are compared and inspected. Subsequently, a report is generated or the parametric tolerance is modified and recalculated according to the parametric tolerance. Accordingly, an allowable tolerance value can be automatically modified without modifying the allowable tolerance value of the design data all over again when an allowable tolerance zone of the design data is changed.

Description

technical field [0001] The present invention relates to inspection of 3D (three-dimensional) scan data using parametric tolerance, in particular, to a method of inspecting 3D scanning data using parametric tolerance, the method comprising the following steps: setting the number of parametric tolerance objects to be equal to that of the object to be inspected The number of allowable tolerances of the design data, associating the design data of the object to be inspected with a predetermined parameter tolerance object without directly entering a value for the allowable tolerance of each domain, and when the parameter tolerance value changes, by changing only the parameter tolerance Delta values ​​to automatically modify the tolerance values ​​for domains associated with design data. Thus, when the range of allowable tolerance is changed due to design modification, it is not necessary to edit all again corresponding to each tolerance value of the design data field. Background t...

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Problems solved by technology

However, because this method involves directly entering each allowable tolerance after selecting the corresponding measurement part of the design data, there is a complication in the working process

[0008] In addition, in the above method, there is a problem that when the product designer changes the allowable tolerance, it is necessary to repeat the process of modifying the design data of the inspected object all over again.

[0009] Therefore, a method for inspecting 3D data using parametric tolerances is proposed to solve the problem of requiring users to edit all the design data of the inspected object again when the allowable tolerances of the product are changed, and to allow systematic maintenance of the allowable tolerances

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