Non-Circular Deformable Sleeve for Radial Tool Fixation
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Solution Overview
Problem
Existing tool holders in processing devices often fail to provide sufficient radial fixation, leading to potential movement and misalignment of tools during processing.
Innovation Solution
A non-round, deformable sleeve is used to securely fix tools by accommodating their shape, either by engaging with a recess or through a rotating element that deforms to prevent radial movement, ensuring a secure axial and radial hold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional round holder is used to hold the tool, then the structure is simple and easy to manufacture, but the radial fixation of the tool is insufficient
Solution Approach 1:
The holder is designed with a non-circular (polygonal) cross-section instead of a conventional round shape. This asymmetric geometry creates corresponding asymmetric contact surfaces that engage with the tool, providing positive radial fixation while maintaining structural simplicity
Solution Approach 2:
The holder features localized non-circular sections at specific positions along its length, while other portions remain cylindrical. This allows the asymmetric fixation feature to be applied only where needed for tool retention, without complicating the entire holder structure
2Strength
If the sleeve wall thickness is increased for strength, then the structural integrity is improved, but the deformation capability for clamping is reduced
Solution Approach 1:
The sleeve has varying wall thickness along its length, with thinner walls in the deformation zone to enable clamping action and thicker walls in other zones to maintain overall structural integrity and strength
Solution Approach 2:
The sleeve is pre-formed with a non-circular cross-section that is slightly larger than the tool diameter, allowing it to elastically deform outward when the tool is inserted and then spring back to create a firm clamping force
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 provides a reliable and repeatable clamping mechanism that prevents radial deflection and rotational movement of tools, enhancing processing precision and stability.
Implementation Method 1
the sleeve being deformed when the rotating element is rotated so that the tool is fixed in the radial direction
Implementation Method 2
the wall thickness of the sleeve is not too thick, so that deformation is permitted
Implementation Method 3
The tool ends with an end face in the bore, which is beveled and interacts with a cross stop
Data Source
Figure 1~3
AI summary
The invention relates to a device for machining workpieces, comprising a tool (3, 3.1) that is connected to a support (1) via a clamping device. The invention is characterized in that the support (1) is associated with an out-of-round, deformable cylinder (6) which receives the tool or which engages in a recess (12) in the tool (3.1).