Dental Milling Blank Mounting for Precise Crown Alignment
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Solution Overview
Problem
Current milling machines for producing dental components, such as crowns or abutments, lack a defined connection geometry and secure clamping mechanism, leading to potential misalignment and faults in the production process.
Innovation Solution
A milling machine with a holder and a blank featuring a pin for defining the connection geometry and a surrounding mounting with openings for precise alignment and positive-locking engagement with a stop, ensuring accurate positioning and orientation of the blank within the machine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a blank is inserted into a milling machine without a defined connection geometry and secure clamping mechanism, then the device complexity is reduced, but the manufacturing precision deteriorates due to potential misalignment and faults in the production process
Solution Approach 1:
The connection geometry is predefined on the blank itself (protrusion and surrounding mounting) before the milling process begins. This preliminary definition of the connection interface ensures that when the blank is mounted in the milling machine, the alignment is already established, eliminating misalignment issues during production while avoiding the need for complex real-time adjustment mechanisms
Solution Approach 2:
The blank's own structure (protrusion and surrounding mounting) serves as the connection interface with the milling machine holder. The blank essentially defines its own mounting geometry through its protrusion feature, which engages with the holder's recess and stop, making the system self-aligning without requiring external alignment tools or complex fixing mechanisms
2Reliability
If a blank is secured via a screw connection or workpiece holder, then the reliability of fixation is improved, but the device complexity increases due to additional components required for mounting
Solution Approach 1:
The connection features (protrusion on the blank, recess and stop on the holder) are merged into the basic mounting structure itself. The protrusion and surrounding mounting form an integrated connection system that combines alignment and fixation functions into a single unified interface, eliminating the need for separate screw connections or complex workpiece holders while maintaining reliable fixation
Solution Approach 2:
The alignment and fixation function is extracted from complex external mounting devices (screws, workpiece holders) and embedded directly into the blank's own structure through its protrusion and surrounding mounting features. This extraction simplifies the overall system by removing unnecessary intermediate components while preserving the essential fixation function
Data Source
AI summary
The invention relates to a milling machine for producing a dental component, such as a crown or an abutment for example, from a blank. The milling machine includes a stop and a holder for the blank. The invention is characterized in that the holder is designed such that the holder can be surrounded by a mounting, which surrounds the holder, of the blank, and the surrounding mounting of the blank can be brought into contact with the stop for positioning purposes. The invention further relates to a corresponding blank.