Dental Workpiece Holding Apparatus with Split Sleeve Clamping
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Solution Overview
Problem
Existing dental workpiece holding apparatuses face challenges in securely holding dental workpieces without causing damage due to high pressure loading, complex configurations, and the need for multiple components, often resulting in unwanted deformation or overloading.
Innovation Solution
A holding apparatus featuring a split sleeve with a clamping surface that distributes securing force over a large region of the workpiece, using a relative movement between the fixing device and holding element to create a force-locking connection, and optionally incorporating guide or wedge surfaces for precise alignment and compensation of dimensional differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive mounting is used to fix the blank to the carrier body, then the workpiece can be securely held, but the process becomes complicated and expensive, leaving residues behind
Solution Approach 1:
The invention extracts the adhesive substance from the holding system, replacing it with a mechanical positive locking connection where mushroom-shaped projections on the blank engage directly with corresponding openings in the carrier body, eliminating residues and simplifying the process
Solution Approach 2:
The mushroom-shaped projections act as an intermediary mechanical element between the blank and carrier body, providing a positive locking connection without requiring adhesive substances, thus resolving the contradiction between secure holding and process simplicity
2Ease of manufacture
If mechanical positive locking connection with mushroom-shaped projections is used, then adhesive-free holding is achieved, but the blank configuration becomes complicated and loading on the projections is high
Solution Approach 1:
The invention modifies only specific local regions of the blank (adding mushroom-shaped projections at engagement points) rather than complicating the entire blank configuration, allowing adhesive-free holding while maintaining simplicity of the overall blank design
Solution Approach 2:
The mushroom-shaped projections are pre-formed on the blank during blank production, so that when the blank is mounted, the positive locking connection is automatically achieved without requiring complex assembly operations or modifying the blank configuration later
3Ease of operation
If direct clamping with clamping claws is used, then the workpiece can be held, but high pressure acts on a small region causing deformation or overloading
Solution Approach 1:
The clamping force is segmented and distributed to multiple mushroom-shaped projections around the blank periphery rather than concentrating it on a single point, reducing pressure on any one region and preventing deformation while maintaining clamping capability
4Reliability
If multiple components are used for fixing action, then secure holding is achieved, but the device complexity increases
Solution Approach 1:
The invention combines the holding and fixing functions into a single integrated carrier body structure with built-in mushroom-shaped openings, eliminating the need for separate clamping devices, adhesives, or multiple components, thus achieving secure holding with minimal complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a structurally simple and secure hold for dental workpieces, reducing the risk of damage and deformation while allowing for easy handling and processing, with the ability to clamp multiple workpieces simultaneously using a single fixing device.
Implementation Method 1
the inside surface of the split sleeve forms a clamping surface for the workpiece. By a relative movement of the fixing device with respect to the holding element, the workpiece can be braced against the holding device by the clamping surface
Implementation Method 2
optionally incorporating guide or wedge surfaces for precise alignment and compensation of dimensional differences
Data Source
AI summary
A holding apparatus for an in particular dental workpiece includes a holding element and a fixing device. The workpiece can be fixed to the holding apparatus by a relative movement of the fixing device with respect to the holding element. The fixing device or the holding element has a split sleeve, and the inside surface of the split sleeve forms a clamping surface for the workpiece. Upon the relative movement of the fixing device with respect to the holding element, the workpiece can be braced against the holding device by the clamping surface.