Segment Collet Locking Mechanism for Replaceable Segments
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Solution Overview
Problem
The manufacturing process of segmented collets is complex, costly, and error-prone due to multiple steps, and existing solutions require the entire collet to be replaced when individual segments or the coupling ring is defective, making it difficult to maintain or replace specific components.
Innovation Solution
A segmented collet design featuring a coupling ring formed from securing sections and web sections, with radially oriented recesses and securing elements that allow for secure attachment and easy replacement of clamping segments, using materials like elastomers or plastics and manufacturing methods like selective laser sintering or injection molding for cost-effective production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a vulcanized coupling ring is used to connect clamping segments, then the segments are securely held together, but the manufacturing process becomes complex, costly, and error-prone
Solution Approach 1:
The patent replaces the chemical vulcanization process with a mechanical locking system. Instead of using elastic material that requires heat and pressure curing, the invention uses locking elements (such as pins, clips, or interlocking features) that mechanically secure the coupling ring to the clamping segments through simple assembly operations, eliminating the complex vulcanization machinery and process control requirements
Solution Approach 2:
The coupling ring is divided into multiple independent coupling segments that can be separately manufactured and then assembled with corresponding clamping segments. Each segment contains its own locking elements, allowing for modular assembly where segments are connected through standardized locking interfaces, simplifying both manufacturing and maintenance
2Manufacturing precision
If clamping segments are precisely arranged in a mold for vulcanization, then the desired position is achieved, but the manufacturing process becomes more complex and costly
Solution Approach 1:
The coupling segments are pre-formed with integrated locking elements and positioning features before assembly. The clamping segments are also pre-prepared with corresponding receptacles and locking surfaces. This preliminary preparation of individual components with built-in positioning features eliminates the need for complex mold arrangements during assembly, as each component brings its own positioning capability
Solution Approach 2:
The patent introduces standardized locking elements and positioning features as intermediary components between the coupling ring and clamping segments. These intermediaries provide precise positioning and secure connection through simple mechanical interfaces, replacing the need for precision mold arrangements and complex alignment procedures
3Reliability
If the entire segmented collet is replaced when a segment or coupling ring is defective, then reliability is maintained, but material waste and cost increase
Solution Approach 1:
The collet system is divided into independent, replaceable coupling segments that can be individually removed and replaced. Each coupling segment is designed as a discrete module with its own locking mechanism, allowing defective segments to be exchanged without affecting the integrity or functionality of the remaining segments, thereby enabling partial replacement rather than complete collet replacement
Solution Approach 2:
The patent enables selective replacement of only the defective coupling segments while retaining and reusing the functional segments. The standardized locking interfaces allow for easy removal of damaged segments and installation of new ones, recovering the value of functional segments and reducing material waste from discarding the entire collet assembly
Data Source
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AI summary
The invention relates to a segment collet chuck with at least two clamping segments (1), each having a receptacle (2) in which a coupling ring (3) connecting the clamping segments (1) to one another is received. For connecting the coupling ring (3) to the clamping segments (1), locking means (30) are provided both for limiting the axial movement and for fixing the clamping segments (1) in their circumferential position relative to the coupling ring (3). The invention further relates to a coupling ring (3) for a segment collet chuck.