Method for manufacturing injection product model

Abstract

The invention discloses a method for manufacturing an integrated injection product model. The method comprises the following steps of: (1) acquiring data, (2) processing the data, (3) reconstructing the model, and (4) manufacturing the model. The step (1) comprises the substeps of breaking off deep and shallow parts of a groove until the groove is deformed and then acquiring the data; the step (2) is used for treating an easily deforming region around the product in the following way: 1) manufacturing an original shape point cloud model on a deforming part of a soft edge of the periphery according to an original shape, 2) then producing an auxiliary surface, 3) unfolding an entity, and 4) finishing a curved surface and fitting scanning points on the break-off deforming parts; the step (3) comprises the following substeps: splitting the product model, then properly dragging the model until a final counter-deformation model of an integrated injection product meeting a precision requirement is obtained and eventually obtaining the product entity model according to the final counter-deformation model. According to the method, the model manufacturing cost can be reduced, the product manufacturing speed can be increased, the product handover time is shortened, and the product quality is improved.

Description

technical field [0001] The invention relates to a method for making a model of an integral injection molding product, in particular to a method for making a model of a precision integral injection molding product based on fitting and positioning anti-deformation processing. Background technique [0002] With the rapid development of economy and technology, product design is applied in all aspects of production and life at the same time. The forward design process is a process from scratch. The designer first conceives the shape, performance, strength and practical performance of the product, and then uses hand-drawn sketches or computer graphics to the original clay and plaster modeling. It is a slow production process and the final product is completed. Forward design of products; reverse engineering technology refers to the process of measuring the real object or model with a certain measurement method, and reconstructing the CAD 3D model of the real object through the thr...

AI Technical Summary

Problems solved by technology

[0004] At present, in the reverse design of products such as sunroofs, side windows, front windows, and tail windows that are integrally molded, it is necessary to pay attention to multiple links, such as the Santa Fe triangle window, DW1191 and other complex product designs. 3D laser scanning first, because there are many features and curved surfaces, the difficulty is how to scan and fit the point cloud, and how to design a complete and qualified digital model with millions of points through reverse thinking, such as this kind of products, especially It is the edge, because the wall is thin, the material is soft, the product is easy to deform and twist, the reference is difficult to find, the position of the closed point cloud is not accurate, and the data point processing is difficult. In the subsequent design process, it is completely in accordance with the denatured product. The data points are designed, the surface is not smooth, the appearance of the product is not good, and there will be distortion when reflecting light, but after the edge is adjusted and smoothed locally, the size cannot be controlled, and the length of the edge of the injection molded product is different

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