Dental Prosthesis Holding Rotation for Multi-Angle Cutting

Solution Overview

Problem

Existing cutting machining devices for dental prostheses are limited in shape and orientation due to restricted cutting directions, which hampers efficiency and accuracy in machining.

Innovation Solution

A cutting machining device that allows three-dimensional positional changes between the machining tool and workpiece, enabling cutting from vertical directions previously inaccessible, using a holding device with a rotation portion to position the workpiece for machining from multiple planes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the machining tool cuts the workpiece from only one direction (direction parallel to plane attached to holding portion), then the cutting process is simple, but the shape and orientation of the prosthesis that can be made are limited

Engineering Contradiction:

Improvecutting process complexityVSAvoidprosthesis shape and orientation capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The holding portion is made rotatable about a rotation axis, transforming the static workpiece positioning into a dynamic system. The rotation portion allows the workpiece to be repositioned at different angular positions, enabling the machining tool to access and cut surfaces that were previously inaccessible from a single fixed direction.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention adds a rotational dimension to the workpiece positioning system. By introducing rotation about an axis perpendicular to the machining direction, the system transitions from one-dimensional linear positioning to two-dimensional angular positioning, allowing cutting from multiple directions including directions facing planes vertical to the rotation axis.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If the workpiece is rotated around a predetermined rotation axis to allow cutting from two directions, then more prosthesis orientations are possible, but cutting from a direction facing a plane vertical to the rotation axis remains impossible

Engineering Contradiction:

Improveprosthesis shape and orientation capabilityVSAvoidcutting process complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The holding portion is made rotatable about a rotation axis, transforming the static workpiece positioning into a dynamic system. The rotation portion allows the workpiece to be repositioned at different angular positions, enabling the machining tool to access and cut surfaces that were previously inaccessible from a single fixed direction.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The invention adds a rotational dimension to the workpiece positioning system. By introducing rotation about an axis perpendicular to the machining direction, the system transitions from one-dimensional linear positioning to two-dimensional angular positioning, allowing cutting from multiple directions including directions facing planes vertical to the rotation axis.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Productivity

If multiple workpieces are held by a holding portion, then production efficiency is improved, but the shape and orientation restrictions remain

Engineering Contradiction:

Improveproduction efficiencyVSAvoidprosthesis shape and orientation capability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The holding portion is designed to simultaneously hold multiple workpieces while incorporating rotation capability. This multi-functional design allows the same holding mechanism to both increase productivity through batch processing and expand versatility through rotational repositioning, enabling diverse prosthesis shapes and orientations to be produced from multiple workpieces on the same occasion.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20240207023A1Cutting machining device, holding device, and machining method

Publication Date: 2024.06.27 KURARAY NORITAKE DENTAL

AI summary

A cutting machining device for a dental prosthesis cuts a block shaped workpiece with a machining tool by changing a relative positional relationship between the machining tool and the workpiece in three dimensions. The workpiece includes a plane (A1 plane) to which a base for attachment to the cutting machining device is fixed, and the cutting machining device includes a holding device as a positioning portion that positions the workpiece with respect to the machining tool so that the workpiece is cut from a vertical direction with respect to a facing plane (A2 plane) that faces the A1 plane.