Collet Chuck Meandering Cross-Section Axial Stress Cushioning
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Solution Overview
Problem
Existing collet chucks face challenges in cushioning axial tensile and compressive stresses during tapping, leading to high wear on taps and thread surface deterioration, and current solutions are either complex or costly to produce.
Innovation Solution
The collet chuck features multiple circumferential grooves on the outside and inside, creating a meandering cross-section that cushions axial stresses through deflection, eliminating the need for expensive milling and ensuring stability against tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring body made of elastomer compounds or a helical elastic sleeve is arranged between the collet and the chuck shank to cushion axial tensile and/or compressive stresses, then the axial stress cushioning is improved, but the device complexity increases due to the need for guide mandrels and guide parts to stabilize against tilting
Solution Approach 1:
The collet chuck body is segmented into multiple circumferential grooves (at least two first circumferential grooves on one side, at least one further circumferential groove on the other side) that create a meandering cross-section. This segmentation allows the structure to flex axially to cushion stresses while inherently maintaining radial stability without requiring additional guide components.
Solution Approach 2:
The material thickness in the meandering cross-section area is specifically matched to the elasticity of the material to achieve the desired axial elasticity for stress cushioning. This parameter optimization allows the structure to provide both axial compliance and radial stability through the design of the meandering path itself.
2Stability of the object's composition
If conventional designs with guide mandrels and guide parts are used to stabilize the helical elastic sleeve against tilting, then the radial stability is improved, but the manufacturing cost and production complexity increase
Solution Approach 1:
The collet chuck body is segmented into multiple circumferential grooves (at least two first circumferential grooves on one side, at least one further circumferential groove on the other side) that create a meandering cross-section. This segmentation allows the structure to flex axially to cushion stresses while inherently maintaining radial stability without requiring additional guide components.
Solution Approach 2:
The meandering cross-section design is self-stabilizing against radial tilting forces. The geometry of the meandering path itself provides the stabilizing effect, eliminating the need for separate guide mandrels or guide parts that would be required in conventional designs.
3Ease of manufacture
If multiple circumferential grooves are provided to create a meandering cross-section for stress cushioning, then the ease of manufacture is improved by eliminating expensive milling work, but the manufacturing precision must be carefully controlled to achieve desired elasticity
Solution Approach 1:
The material thickness in the meandering cross-section area is specifically matched to the elasticity of the material to achieve the desired axial elasticity for stress cushioning. This parameter optimization allows the structure to provide both axial compliance and radial stability through the design of the meandering path itself.
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
This design simplifies production, reduces costs, and effectively stabilizes against axial misalignment while maintaining the desired elasticity for stress cushioning, thereby reducing wear and improving thread quality.
Implementation Method 1
The material thickness in the area of the meandering cross section of this area of the collet chuck 5 must be matched to the elasticity of the material in such a way that the desired elasticity results in the axial direction
Implementation Method 2
the cushioning is primarily effected by the deflection, which takes place in the axial direction, of the webs 25 running perpendicular to the axis
Data Source
Figure 1~4
AI summary
Chuck lining (5) comprises peripheral grooves (21, 23) formed along the periphery of the lining. Preferred Features: Grooves (21) are provided on the outer side of on the inner side and grooves (23) are provided on the other side in the axial direction between the two to form a meandering cross-section. The cross-section of the chuck lining is made partially from radially extending bars (25).