CAD Wire Path Design Tool for Orthodontic Bending

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Solution Overview

Problem

Designing complex wire shapes, particularly three-dimensional wire shapes, is challenging due to the difficulty in visualizing and intuitively selecting dimensions, leading to a trial-and-error process, especially when fitting wires to pre-existing three-dimensional shapes like the human mouth for orthodontic applications.

Innovation Solution

A CAD system that receives a solid model, allows user input to select points on the surface, calculates points in space for wire shaping, and generates a part program file for a wire bending machine to create the wire shape, including features for collision detection and template-based design adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional manual wire bending methods are used, then flexibility in creating custom wire shapes is maintained, but manufacturing precision and repeatability deteriorate

Engineering Contradiction:
Improvewire shape precisionVSAvoidautomation system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical wire bending with an automated CNC wire bending machine controlled by computer software. The system uses digital modeling and automated control to substitute human craftsmanship with programmable machinery, achieving consistent precision through digital instructions rather than manual skill.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent transforms the wire bending process from manual parameter adjustment to digital parameter control. Wire shapes are defined by digital coordinates and parameters in CAD software, which are then automatically translated into machine instructions, allowing precise control of bend angles, radii, and positions through programmable parameters.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If complex three-dimensional wire shapes are designed manually, then design flexibility is maintained, but design time and complexity increase

Engineering Contradiction:
Improvewire shape design easeVSAvoiddesign time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The patent uses digital copying and representation of wire shapes through 3D CAD modeling. Instead of manually visualizing and designing complex three-dimensional forms, the system creates digital models that can be manipulated, visualized from multiple angles, and modified through software interfaces, making the design process more intuitive and efficient.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent transitions from two-dimensional drafting to three-dimensional digital modeling for wire design. The CAD system allows designers to work with full 3D representations of wire shapes, enabling better spatial visualization and more efficient manipulation of complex geometries compared to traditional 2D methods.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If trial-and-error methods are used for wire shape fitting, then adaptability to pre-existing structures is achieved, but productivity and time efficiency deteriorate

Engineering Contradiction:
Improvewire shape production efficiencyVSAvoidwire fit accuracy
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent performs preliminary digital fitting and collision detection before actual wire manufacturing. The software allows users to visualize the wire shape in relation to the target structure, detect potential collisions, and adjust the design virtually, eliminating the need for physical trial-and-error iterations and ensuring accuracy before production.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements automated feedback through collision detection algorithms and digital visualization. The system provides immediate feedback on whether the designed wire shape will collide with the target structure or other components, allowing real-time adjustments to ensure proper fit and eliminate the uncertainty inherent in manual trial-and-error methods.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS10809697B2Wire path design tool
Publication Date: 2020.10.20 ADVANCED ORTHODONTIC SOLUTIONS
  • US10809697B2 patent drawing
  • US10809697B2 patent drawing
  • US10809697B2 patent drawing

AI summary

A system and a method is provided in which a CAD system receives a solid model and receives user input to select points on the surface of the solid model, to create a wire part program file based on the selected points, and to transmit the wire part program file to a bending machine. The wire part program files is configured such that the bending machine will manufacture a wire based on the wire part program file.