Dental Workpiece Support Compensation for Axial Alignment
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Solution Overview
Problem
Existing workpiece supports for dental machining suffer from inaccuracies in axial position alignment between the drive rotation axis and the workpiece rotation axis, leading to imbalances during rotary machining.
Innovation Solution
A workpiece support system comprising separable parts with a compensation region for material removal to form a compensation surface, allowing for precise alignment through a form-fitting connection with a seat surface, which can be adjusted to correct axial position errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a straightforward workpiece support design is used for rotary machining, then the structure is simple and easy to manufacture, but axial position alignment errors occur between the drive rotation axis and workpiece rotation axis
Solution Approach 1:
The workpiece support is divided into multiple separable parts: a first workpiece-support part with a compensation region and a second workpiece-support part with a seat surface. This segmentation allows the compensation surface to be machined separately on the first part to correct axial position alignment errors, while maintaining the overall simplicity of the support structure.
Solution Approach 2:
The compensation surface is pre-machined on the first workpiece-support part before final assembly. This preliminary action allows axial position alignment corrections to be made in advance, ensuring precise alignment when the parts are assembled together with the connecting element.
2Device complexity
If the workpiece support is designed as a single integrated part, then the structure is simple, but axial position errors cause imbalances during rotation
Solution Approach 1:
The workpiece support is segmented into multiple parts that can be assembled together. The compensation surface on the first part allows for correction of axial position errors, ensuring rotational balance while keeping the overall structure relatively simple through the use of a connecting element.
Solution Approach 2:
The compensation surface modifies the geometric parameters of the first workpiece-support part to correct axial position alignment. By changing the surface geometry through material removal, the axial position error is compensated, ensuring balanced rotation without requiring a completely complex redesign.
3Manufacturing precision
If a compensation region with material overhang is provided, then axial position errors can be corrected by material removal, but the device complexity increases
Solution Approach 1:
The compensation region is localized to a specific area on the first workpiece-support part, segmented from the rest of the structure. This allows the compensation surface to be machined in a controlled manner to correct axial position errors without requiring complete redesign of the entire device.
Solution Approach 2:
The compensation surface is created in a local compensation region rather than modifying the entire workpiece support. This local quality approach allows precise axial position correction at the specific location where it is needed, minimizing the overall device complexity.
Data Source
AI summary
A method of correcting an axial position of a workpiece support (1) used for removing material from a dental workpiece (2) which is held by the workpiece support (1) and is rotated together with the workpiece support (1) about a drive rotation axis (3) when material is being removed. The workpiece support (1) has at least two workpiece support parts (4, 5, 6) which can be separated from each other and connected to each other. One of the workpiece support parts (4, 5) has at least one compensation region (7) with a material projection (8) for introducing a compensation surface (9) by removing material, and the other workpiece support part (6) has a seating surface (10) for connecting to the compensation surface (9) in a form fitting manner.