CN1348731A - personalized shoe tree mold designing method - Google Patents

Abstract

The invention discloses a method for designing individualized shoe last shapes. This method first uses a three-dimensional scanner to obtain three-dimensional data of the human foot and builds a model, then compares it with a standard shoe last model, and adjusts the standard shoe last to generate a specific shoe last model that fits a specific customer's foot shape. A very well-fitting, personalized shoe is custom made to that specific last model. Compared with the existing shoe last modeling method, the present invention emphasizes the use of factory technology for personalized and comfortable design, fully considers the shortcomings of traditional methods, focuses on people's needs, adheres to the "people-oriented" design principle, and ensures It ensures a high degree of coordination between each person's feet and the shoes they wear, and creates a very important way for designing and developing personalized CAD software for shoes.

Description

Individualized Design Method for Shoe Last Modeling

Technical field

The invention relates to a shoe last shape design method, in particular to a shoe last shape personalized design method.

Background technique

With the continuous improvement of social modernization and material living standards, people's needs for the comfort and personalization of their shoes are increasing, especially for those engaged in specific occupations (such as athletes, dancers, soldiers, etc.) More urgently, the individualized design method of shoe last shape is exactly produced for this demand.

The traditional shoe manufacturing method is to simply divide shoes into several categories such as men's shoes, women's shoes, children's shoes, baby shoes and elderly shoes, and then according to specific shoe sizes (such as Chinese shoe sizes, French shoe sizes, British shoe sizes) and American shoe sizes) and specific styles to design and manufacture fixed and universal standard shoe lasts, and then mass-produce shoes based on these standard shoe lasts. Although this method is easy to operate and low in cost, it is not enough in terms of comfort and personalization. Because the size and shape of two people's feet are not exactly the same in the world, when people buy shoes, they often force their feet to adapt to the shoes that have been formed, and cannot adjust according to the actual shape of their feet. Three-dimensional data to customize shoes that fit perfectly. Therefore, the traditional shoe last modeling design method cannot guarantee the comfort and individual needs of shoes.

Contents of Invention

The purpose of the present invention is to provide a shoe last shape design method that meets the needs of comfort and individuality.

First, a 3D scanner is used to obtain 3D data of the human foot and model it, then compare it with a standard shoe last model, and adjust the standard shoe last to generate a specific shoe last model that fits a specific customer's foot shape.

Compared with the existing shoe last modeling method, the present invention emphasizes the personalized and comfortable shoe last modeling design method, fully considers the shortcomings of the traditional method, focuses on people's needs, and adheres to the "people-oriented" design principle, Its advantages are:

1) The design method we propose reflects people's comfort and individual needs for shoes.

2) The design method we proposed ensures a high degree of coordination between each person's feet and the shoes they wear. It comprehensively considers the functional beauty, comfort beauty, craftsmanship beauty and structural beauty involved in the shoe design process. .

3) The design method we proposed has changed the traditional concepts, design procedures and technical literacy of shoe last designers.

4) The design method we proposed improves the taste and grade of shoes, and creates conditions for using computers to carry out three-dimensional shoe modeling and style design.

5) The design method we propose makes full use of advanced technologies such as three-dimensional scanners, computer graphics, and computer-aided design, and embodies the perfect combination of computer technology and shoe last modeling design methods.

Description of drawings

Figure 1 is a schematic diagram of feature point extraction of human feet;

Fig. 2 Schematic diagram of the individualized design method for shoe last shape.

Detailed ways

The steps of the shoe last modeling personalized design method are as follows:

1) Utilize the three-dimensional scanner to obtain the three-dimensional data of the human foot, build and display the three-dimensional model of the human foot on the computer;

2) Extract the first metatarsophalangeal point ①, fifth metatarsophalangeal point, metatarsophalangeal point ② and metatarsophalangeal line, lumbar dimple point, tarsus point ⑤, suprascaphoid point, ankle bone ③ in the specific three-dimensional data of human feet reach the lower border point of the ankle bone, the high point of the calcaneus, and the protruding point of the heel ④, and draw the central axis of the three-dimensional model of the human foot. Compare the corresponding feature points in the last model;

3) When the error between the feature points and lines in the standard shoe last model and the feature points and lines of the specific human foot three-dimensional model exceeds a certain range, adjust the corresponding feature points in the standard shoe last model until they are consistent with the specific human foot parameters match;

4) Customize the shoe last according to the specific shoe last database.

The specific steps for drawing the central axis of the three-dimensional model of the human foot are as follows: firstly draw the central axis of the front part of the human foot (dorsal tarsal line); secondly draw the central axis of the heel of the human foot; finally draw the central axis of the sole of the human foot. The characteristic points in the specific three-dimensional model of the human foot are compared with the corresponding characteristic points in the searched standard shoe last model.

Use the 3D scanner to obtain the 3D data of all existing standardized shoe lasts, and establish a standard shoe last database.

Search the standard shoe last model corresponding to a specific 3D model of the human foot in the standard shoe last library. The main basis for searching is: shoe type, shoe size, shoe style, etc.

If the error between the corresponding feature points and lines in the existing standard shoe last model and the feature points and lines of the specific human foot three-dimensional model exceeds a certain range, then adjust the corresponding feature points and lines in the standard shoe last model until they are consistent with Specific human foot parameters fit.

Claims (5)

1. personalized shoe tree mold designing method, it is characterized in that the three-dimensional data and the modeling that at first utilize spatial digitizer to obtain people's pin compare itself and standard shoe last model then, and the standard shoe tree adjusted, meet the specific shoe last model of specific consumers pin type with generation.

2. a kind of personalized shoe tree mold designing method according to claim 1 is characterized in that its concrete steps are as follows:

1) utilizes spatial digitizer to obtain the three-dimensional data of people's pin, set up and show the three-dimensional model of people's pin on computers;

2) extract on first sole of the foot toe point in specific people's pin three-dimensional data, the 5th sole of the foot toe point, sole of the foot toe point and sole of the foot toe line, flank point, shank point, the boat and bend point, anklebone position and anklebone lower edge point, the high point of calcaneum, mid-point of heel, and the axis of drawing people's pin three-dimensional model, characteristic of correspondence point, line in the characteristic point in specific people's pin threedimensional model, line and the standard shoe last model that searches from standard shoe tree database are compared;

3) when the error of the characteristic point of the characteristic point in the standard shoe last model, line and specific people's pin threedimensional model, line surpasses certain limit, adjust characteristic of correspondence point, line in the standard shoe last model, until coincideing with specific people's pin parameter;

4) according to specific shoe tree custom database shoe tree.

3. a kind of personalized shoe tree mold designing method according to claim 1 and 2, the method that it is characterized in that the axis of said drafting people pin three-dimensional model is, at first draw the anterior axis of people's pin instep, next draws people's heel axis, draws people's pin sole axis at last.

4. a kind of personalized shoe tree mold designing method according to claim 1 and 2 is characterized in that said standard shoe tree database, is that the three-dimensional data of utilizing spatial digitizer to obtain existing all standardization shoe trees is set up.

5. a kind of personalized shoe tree mold designing method according to claim 1 and 2 is characterized in that the foundation of character pair point in the said search criterion shoe last model is: shoes kind, shoes size size, shoes style.

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