A system for generating a custom shoe model

Abstract

The application discloses a kind of generation systems of custom shoe model, including custom shoe last automatic generation module, shoe component custom generation module, additive design generation module, for according to the shoe last model of target shoe and user foot shape model, automatically generate the custom shoe last model matching user foot shape model;And at least one shoe component model is generated based on custom shoe last model;Again, introduce DfAM design in shoe component model, add cell structure;The generation system of custom shoe model of the application greatly improves design efficiency, realizes the automation of design, provides efficient, low-cost design mode for the business of large-scale custom shoes;It can also realize the lightweight, personalized design of custom shoes due to the whole digital design process and input and output;It can be conveniently interfaced with front-end data acquisition mode, back-end and digital manufacturing end interface, can support various new business models based on Internet.

Description

Technical Field

[0001] This invention relates to the field of custom shoe manufacturing, and more specifically to a system for generating custom shoe models. Background Technology

[0002] With the development of technology and the improvement of living standards, people's requirements for shoes have gradually shifted from single function to comfort and personalization. Therefore, customized shoe technology has a promising market prospect. However, in the current shoe manufacturing industry, customized shoes usually require manual intervention and drafting. From the shoe last to drawing a two-dimensional design, and then to obtaining a three-dimensional customized shoe model, it usually takes 2 to 3 days, which is labor-intensive, time-consuming, and inefficient. If the shoe designer raises opinions requiring modifications, the drafting process has to be repeated. In practice, this iterative process occurs at least 3 times, resulting in a modeling process for a single customized shoe taking 7 to 10 days.

[0003] The emergence of 3D printing technology has provided a new direction for the development of customized shoes, and can simplify the drawing steps in the design process to some extent. However, at present, the design and production of customized shoes still often rely on the experience of technicians, and it is still difficult to automate the design of customized shoes. Summary of the Invention

[0004] This invention aims to provide a system for generating customized shoe models, enabling automated design and adjustment of shoe lasts based on user foot data, and generating customized shoe print models. Furthermore, the introduction of Design for Additive Manufacturing (DfAM) can further achieve lightweight and personalized designs for customized shoes.

[0005] Specifically, a custom shoe model generation system includes a custom shoe last automatic generation module, a shoe component customization generation module, and an additive design generation module;

[0006] The custom shoe last automatic generation module is used to automatically generate a custom shoe last model that matches the user's foot shape model based on the shoe last model of the target shoe and the user's foot shape model.

[0007] The shoe component customization generation module includes at least one shoe component generation module, used to generate at least one shoe component model from a customized shoe last model. The shoe component generation module includes, but is not limited to, a customized sole generation module, a customized upper generation module, and a complete shoe generation module; the shoe component model includes, but is not limited to, a customized sole model, a customized upper model, and a customized complete shoe model.

[0008] The additive design generation module includes at least one DfAM structure generation module for adding cell structures to at least one shoe component model; the DfAM structure generation module includes, but is not limited to, a DfAM sole structure generation module, a DfAM upper structure generation module, and a DfAM whole shoe structure generation module.

[0009] Preferably, the custom shoe last automatic generation module includes a custom shoe last generation module, which is used to adjust the shoe last model of the target shoe model according to the shoe feature data so that it fits the user's foot shape model and generates a custom shoe last model.

[0010] Preferably, the customized shoe last generation module takes shoe feature data and at least one foot deformation simulation parameter as input, adjusts the shoe last model of the target shoe to match the size of the user's foot model; sets and adjusts fine-tuning parameters to adjust the shoe last model of the target shoe to fit the user's foot model; and generates a customized shoe last model.

[0011] Preferably, the user foot model used in the customized shoe last automatic generation module is a user foot shape simulation model when wearing shoes.

[0012] Preferably, the customized shoe last automatic generation module further includes a foot shape simulation module; the foot shape simulation module raises the heel of the user's foot shape model based on the front-to-back heel difference or side profile bottom edge line of the shoe last model of the target shoe; adjusts the foot shape feature parameters of the user's stationary foot shape model so that the curve of the foot bottom surface matches the bottom surface of the shoe last model of the target shoe; adjusts the foot shape feature parameters of the user's foot shape model based on shoe feature data such as the single-side width compression amount and the metatarsal girth scaling amount of the target shoe, so that the width of the forefoot narrows and the height increases; and generates a user's foot shape simulation model.

[0013] Preferably, the custom sole generation module is used to generate a custom sole model by inputting a custom last model, a target shoe design drawing, and shoe design parameters.

[0014] Preferably, the customized sole generation module extends the sole side profile of the target shoe design drawing along the width direction of the customized last model, extracts the trajectory of the upper curve of the sole side profile, and generates the inner surface model of the sole; extracts the trajectory of the lower curve of the sole side profile to generate the bottom surface model of the sole, and connects the edges of the two to generate the customized sole model.

[0015] Preferably, the custom upper generation module is used to generate a custom upper model by inputting a custom last model, a target shoe design drawing, and shoe design parameters.

[0016] Preferably, the customized upper generation module extends the curved surface of the customized shoe last model at the ankle upwards to a point higher than or equal to the highest point of the curve at the shoe opening of the side profile of the target shoe design drawing; the curved surface at the ankle of the extended customized upper model is cut using the curve at the shoe opening of the side profile ...

[0017] Preferably, the DfAM sole structure generation module is used to add cell structures to the customized sole model, which is output by the customized sole generation module, or the midsole model or outsole model, as input, and with reference to the user's foot stress data.

[0018] Preferably, the cell structure is derived from a lattice database, which is a simulation-based database containing the relationship between cell geometric parameters and mechanical properties.

[0019] Preferably, the cell structure is selected from one or a combination of Diamond surface, Gyroid surface, Dprime surface, Split P surface, I-WP surface, Lidinoid surface, Neovius surface, Scherk surface, and Schwarz surface.

[0020] Compared with existing technologies, the beneficial effects of this invention are: the technical solution of this invention greatly improves design efficiency, realizes design automation, and provides an efficient and low-cost design model for large-scale customized shoe businesses. Due to the fully digital design process and input / output, it can easily interface with front-end data acquisition modes and back-end digital manufacturing terminals, supporting various new internet-based business models. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a standard shoe last model, a user foot shape model, and a customized shoe last model in one embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a user's foot shape simulation model wearing shoes in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a customized shoe sole model in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of a customized shoe upper model in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of a customized shoe model including a DfAM structure in one embodiment of the present invention;

[0026] Figure 6This is a schematic diagram of a cell structure in one embodiment of the present invention;

[0027] The icons are labeled as follows: Standard shoe last model 1, User foot shape model 2, Foot girth 3, Custom shoe last model 4, Side profile bottom edge line 5, User foot shape simulation model while wearing shoes 6, Target shoe design drawing (marked 7), Shoe sole side profile 8, Shoe upper side profile 9, Inner surface model of shoe sole 10, Shoe sole bottom surface model 11, Custom shoe sole model 12, Curved surface at the ankle 13, Curve at the shoe opening 14, Custom shoe upper model 15, Custom shoe model 16, Cellular structure 17, Porous mesh structure 18. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0029] Specifically, a custom shoe model generation system includes a custom shoe last automatic generation module, a shoe component customization generation module, and an additive design generation module;

[0030] The custom shoe last automatic generation module is used to automatically generate a custom shoe last model that matches the user's foot shape model based on the shoe last model of the target shoe and the user's foot shape model. The custom shoe last model matches both the shape and other parameters of the user's foot shape model and the shoe feature data of the target shoe. The shoe feature data is selected from one or more of the following: toe shape, bottom edge line of the shoe last side profile, shoe last extension, single-side width compression, and instep scaling.

[0031] In one or more embodiments, such as Figure 1 As shown, the shoe last model of the target shoe is the standard shoe last model 1, where only the model of the right or left foot needs to be input. The user foot model 2 is selected from the foot model collected in a static or dynamic state of the user, and can be obtained through conventional methods such as molding and 3D scanning. The input format of the target shoe last model 1 and the user foot model 2 can be STL format or other formats used to describe mesh models. The customized shoe last automatic generation module includes a customized shoe last generation module, used to adjust the target shoe last model 1 according to the shoe feature data to fit the user foot model 2, generating a customized shoe last model 4. Preferably, the input end of the customized shoe last automatic generation module can also be equipped with a Boolean value controller to identify whether the input model is a left or right foot, thereby improving the degree of automation.

[0032] In the above embodiments, the customized shoe last generation module takes shoe feature data and at least one foot deformation simulation parameter as input, adjusts the shoe last model 1 of the target shoe to match the size of the user's foot model 2; sets and adjusts fine-tuning parameters to adjust the shoe last model 1 of the target shoe to fit the user's foot model 2; and generates a customized shoe last model 4. The foot deformation simulation parameters are derived from the deformation of the user's foot after wearing the target shoe. If the deformation of the foot matches the shoe feature data set by the shoe, the comfort of wearing the shoe can be guaranteed. The deformation simulation parameters include, but are not limited to, single-sided width compression and maximum instep height. The fine-tuning parameters are selected from at least one shoe last circumference parameter, including but not limited to the metatarsal circumference 3, instep circumference, and heel circumference of the shoe last. In the above embodiments, the customized shoe last generation module can also output parameters such as metatarsal circumference line and metatarsal circumference scaling to check whether the generated customized shoe last model fits the user's foot model and meets the design requirements.

[0033] Preferably, the user foot model used in the automatic custom shoe last generation module can also be a user foot shape simulation model when wearing shoes. The foot shape model simulates the shape of the user's foot when wearing the target shoe style, which can further improve the comfort of the custom shoes. The automatic custom shoe last generation module also includes a foot shape simulation module. For example... Figure 2 As shown, the foot shape simulation module, based on the heel-to-toe difference or side profile bottom edge 5 of the target shoe last model 1, raises the heel of the user's foot shape model 2. Then, it adjusts the foot shape feature parameters of the user's stationary foot shape model 2 to match the curve of the foot's bottom surface with that of the target shoe last model 1. Next, based on the shoe's characteristic data such as the single-sided width compression and metatarsal girth scaling of the target shoe, it adjusts the metatarsal girth 3 and other foot shape feature parameters of the user's foot shape model 2 to narrow the width and increase the height of the forefoot. Finally, it generates the user's foot shape simulation model 6. In the above embodiment, the changes in foot shape feature parameters do not exceed the last lengthening amount, and the ratio of the metatarsal girth in the user's foot shape model 2 to the metatarsal girth in the foot-wearing simulation deformation model 6 is consistent with the metatarsal girth scaling amount required by the target shoe shape.

[0034] In the above embodiments, the customized shoe last model generated by the customized shoe last automatic generation module can be used for CNC shoe last processing or 3D printing processing. The shoe last model can also be used as input data for subsequent customized sole and upper generation modules.

[0035] The shoe component customization generation module includes at least one shoe component generation module, used to generate at least one shoe component model from a customized shoe last model. The shoe component generation module includes, but is not limited to, a customized sole generation module, a customized upper generation module, and a complete shoe generation module. The shoe component model includes, but is not limited to, a customized sole model, a customized upper model, and a customized complete shoe model.

[0036] The custom sole generation module is used to generate a custom sole model based on the input custom last model, target shoe design drawing, and shoe design parameters. In one or more embodiments, such as Figure 3 As shown, the target shoe design drawing (marked 7) includes multiple views such as a side view and a bottom view, and can be derived from target shoe models such as athletic shoes and elderly shoes. It includes features such as the sole side profile 8 and the upper side profile 9, and can be a 2D drawing or a 3D model. The shoe design parameters include parameters related to the upper thickness, insole thickness, and sole shape design. The customized sole generation module extends the sole side profile 8 of the target shoe design drawing (marked 7) along the width direction of the customized last model 4, extracts the trajectory of the upper curve of the sole side profile, and generates the inner sole model 10; it extracts the trajectory of the lower curve of the sole side profile to generate the bottom sole model 11, and connects the edges of the two to generate the customized sole model 12. The inner sole model 10 and the bottom sole model 11 conform to the sole shape design parameter settings of the target shoe design drawing (marked 7). In the above embodiment, the extension route of the sole side profile 8 along the width direction of the customized last model 4 matches the bottom surface of the customized last model 4. The custom sole model 12 generated by the custom sole generation module can be manufactured using CNC machining methods, indirectly manufactured using 3D printing, or used as an input model for the additive design generation module.

[0037] The customized shoe upper generation module is used to generate a customized shoe upper model based on the input customized shoe last model, the target shoe design drawing, and shoe design parameters. In one or more embodiments, such as Figure 4 As shown, the customized upper generation module extends the curved surface 13 at the ankle of the customized shoe last model 4 upwards to a point higher than or equal to the highest point of the curve 14 at the shoe opening of the side profile 9 of the target shoe design drawing (marked 7); the curved surface 13 at the ankle of the extended customized upper model is cut using the curve 14 at the shoe opening of the side profile, removing the portion higher than the curve 14 at the shoe opening of the side profile; upper thickness parameters are added to generate the customized upper model 15. The upper model 15 generated by the customized upper generation module can be used for traditional digital weaving and cutting, or as an input model for the additive design generation module.

[0038] The shoe component customization generation module also includes a whole shoe generation module, used to combine the customized sole model 12 and the customized upper model 15 to generate a customized shoe model 16. In addition, the shoe component models output by the shoe component customization generation module also include a 3D sole outline model, a 2D unfolded upper model, a sole detail design model, a midsole model or outsole model, as well as the inner surface and bottom surface of the sole.

[0039] The additive design generation module includes at least one DfAM structure generation module for adding cellular structures to at least one shoe component model, suitable for lightweighting and customization of shoe component models. The DfAM structure generation module includes, but is not limited to, a DfAM sole structure generation module, a DfAM upper structure generation module, and a DfAM whole shoe structure generation module. In one or more embodiments, such as... Figure 5 As shown, the DfAM sole structure generation module is used to add cell structures 17 to the customized sole model 12 output by the customized sole generation module, or the midsole model and outsole model, based on the user's foot pressure data. This means the cell structures 17 replace the original structures at multiple points on the customized sole model 12, or construct a complete sole model 12 using the cell structures 17. The cell structures 17 originate from a lattice database, which is a simulation-based database containing relationships between cell geometric parameters and mechanical properties. Preferably, appropriate algorithms can be used to achieve the design goals, including but not limited to: automatic lattice structure generation algorithms based on lattice databases and simulation-driven algorithms, topology optimization algorithms, and mathematically based TPMS structure generation algorithms. The user's characteristic foot pressure data or weight data can be selected as input for simulation calculations.

[0040] In other embodiments, the DfAM upper structure generation module is used to add cellular structures to the customized upper model. The cellular structure can be a porous mesh structure 18, which can be implemented using algorithms including porous structure generation algorithms and woven structure generation algorithms. The DfAM whole shoe structure generation module is used to add cellular structures to parts such as the sole or upper of the customized shoe model. The output of the additive design generation module can be a sole, upper, or a one-piece sole and upper structure. The model output by this module supports 3D printing / additive manufacturing.

[0041] In one or more embodiments, such as Figure 6 As shown, the cell structure is selected from one or a combination of Diamond surfaces (as shown in 6A-6C), Gyroid surfaces (as shown in 6D, 6E, 6I, 6J), Dprime surfaces (as shown in 6G, 6H), Split P surfaces (as shown in 6L, 6M), I-WP surfaces (as shown in 6N), Lidinoid surfaces (as shown in 6O), Neovius surfaces (as shown in 6P), Scherk surfaces (as shown in 6F), and Schwarz surfaces (as shown in 6K).

[0042] The custom shoe model generation system of this invention allows for the development of generation algorithms for each module in the technical solution within the Rhino modeling environment using the Grasshopper visual programming tool. Specific presentation modes include, but are not limited to: software plugins, packaged standalone software, and web-based software.

[0043] The Grasshopper visual programming tool used in the Rhino modeling environment can also be replaced by programming tools in other CAD modeling software. These tools include, but are not limited to: visual scripts in the 3DGenerative Innovator character modeling environment of CATIA 3DEXPERENIENCE; Autodesk products such as the Dynamo visual programming platform in the Alias ​​modeling environment; Bentley Systems' Generative Components; and programming language tools in various CAD software environments.

[0044] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical solution of the present invention. Any simple modifications, formal changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A system for generating customized shoe models, characterized in that, It includes a module for automatically generating custom shoe lasts, a module for generating custom shoe parts, and a module for generating additive design. The custom shoe last automatic generation module is used to automatically generate a custom shoe last model that matches the user's foot shape model based on the shoe last model of the target shoe and the user's foot shape model. The shoe component customization generation module includes at least one shoe component generation module, which is used to generate at least one shoe component model from the customized shoe last model. The shoe component generation module includes a customized sole generation module, a customized upper generation module, and a complete shoe generation module; The shoe component model includes a customized sole model, a customized upper model, and a customized complete shoe model; The additive design generation module includes at least one DfAM structure generation module for adding cell structures to at least one shoe component model. The DfAM structure generation module includes a DfAM sole structure generation module, a DfAM upper structure generation module, and a DfAM whole shoe structure generation module. The custom sole generation module extends the sole side profile of the target shoe design drawing along the width direction of the custom last model, extracts the trajectory of the upper curve of the sole side profile, and generates the inner surface model of the sole; it extracts the trajectory of the lower curve of the sole side profile to generate the bottom surface model of the sole, and connects the edges of the two to generate the custom sole model. The customized upper generation module extends the curved surface of the customized shoe last model upwards at the ankle, to a point higher than or equal to the highest point of the curve at the shoe opening of the side profile of the target shoe design drawing; Cut the curved surface at the ankle of the extended custom upper model using the curve of the shoe upper side contour at the shoe opening, removing the part that is higher than the curve of the shoe upper side contour at the shoe opening. Add upper thickness parameters to generate a custom upper model; The cell structure is derived from a lattice database, which is based on simulation and contains the relationship between cell geometric parameters and mechanical properties. The DfAM sole structure generation module is used to add cell structures to the custom sole model, which is output by the custom sole generation module, or the midsole model or outsole model, as input, and with reference to the user's foot stress data.

2. A system for generating a customized shoe model as described in claim 1, characterized in that, The custom shoe last automatic generation module includes a custom shoe last generation module, which is used to adjust the shoe last model of the target shoe model according to the shoe feature data so that it fits the user's foot shape model and generates a custom shoe last model.

3. A system for generating a customized shoe model as described in claim 2, characterized in that, The customized shoe last generation module takes shoe feature data and at least one foot shape deformation simulation parameter as input, adjusts the shoe last model of the target shoe to match the size of the user's foot shape model; sets and adjusts fine-tuning parameters to adjust the shoe last model of the target shoe to fit the user's foot shape model; Generate a custom shoe last model.

4. A system for generating a customized shoe model as described in claim 1, characterized in that, The user foot model used in the customized shoe last automatic generation module is a simulation model of the user's foot shape when wearing shoes.

5. A system for generating a customized shoe model as described in claim 1, characterized in that, The customized shoe last automatic generation module also includes a shoe-wearing foot shape simulation module; the shoe-wearing foot shape simulation module lifts the heel of the user's foot shape model based on the front-to-back heel difference or the side profile bottom edge line of the shoe last model of the target shoe; and adjusts the foot shape feature parameters of the user's stationary foot shape model so that the bottom surface of the foot shape matches the curve of the bottom surface of the shoe last model of the target shoe. Based on the single-side width compression and metatarsal scaling of the target shoe, the foot shape feature parameters of the user's foot shape model are adjusted to narrow the width of the forefoot and increase its height; thus generating a simulation model of the user's foot shape while wearing the shoe.

6. A system for generating a customized shoe model as described in claim 1, characterized in that, The custom sole generation module is used to generate a custom sole model by taking the input custom last model, the target shoe design drawing, and the shoe design parameters.

7. A system for generating a customized shoe model as described in claim 1, characterized in that, The custom upper generation module is used to generate a custom upper model by taking the input custom last model, the target shoe design drawing, and the shoe design parameters.

8. A system for generating a customized shoe model as described in claim 1, characterized in that, The cell structure is selected from one or a combination of Diamond surface, Gyroid surface, Dprime surface, Split P surface, I-WP surface, Lidinoid surface, Neovius surface, Scherk surface, and Schwarz surface.

Images