Tool Holder Radial Damping via Elastically Deformable Means
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Solution Overview
Problem
Existing tool holders vibrate due to their construction, particularly at higher machining speeds, and current damping devices primarily act axially, leading to suboptimal damping performance.
Innovation Solution
A tool holder with a damping means featuring an elongated body in an end compartment, using radially absorbing elastically deformable elements that extend between the damping means and the compartment wall, allowing radial displacement without axial stress, and optionally incorporating ring-joint gaskets for shock prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a damping device is installed in an axial hole of a tool holder and held by elastically deformable elements acting only on the ends, then the device can be installed with simple structure, but the damping performance is suboptimal because it acts only axially without radial contact
Solution Approach 1:
The damping device is transformed from acting only in the axial dimension to acting in both axial and radial dimensions. The elastically deformable elements are configured to contact the generator of the damping device radially, enabling the device to absorb vibrations in multiple directions simultaneously, thus improving damping performance while maintaining installation simplicity
Solution Approach 2:
The generator of the damping device serves as an intermediary element that receives both axial and radial forces. By introducing this intermediate component, the elastically deformable elements can effectively transmit radial forces from the compartment wall to the damping device, enabling multidirectional damping without complicating the overall structure
2Reliability
If the elastically deformable elements are clamped between the compartment wall and the damping means, then optimal radial damping is achieved, but the device complexity increases compared to end-action only designs
Solution Approach 1:
The elastically deformable elements perform multiple functions simultaneously: they provide axial support, enable radial contact, and transmit forces in both directions. This multi-functionality reduces the need for separate components for each function, thereby improving damping effectiveness without proportionally increasing device complexity
Solution Approach 2:
The axial and radial damping functions are merged into a single integrated structure where the elastically deformable elements contact the damping device both axially and radially. This consolidation eliminates the need for separate axial and radial damping mechanisms, achieving effective multidirectional damping with minimal additional 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 effectively eliminates vibrations caused by cutting forces and machining speeds, providing simple and optimal damping without additional regulation, suitable for various tool holders with radial displacement only.
Implementation Method 1
at least one elastically deformable means, at least close to each end, where said elastically deformable means extend between the envelope of the damping means and the wall of the compartment of the tool holder, and are clamped between the wall of the compartment and the damping means
Data Source
AI summary
The present invention relates to a tool holder, such as a reaming head (1), or a milling arbor, provided with a damping means (2) in the form of an elongated body, which is arranged in an end compartment (3) of the tool holder (1), which compartment is of appropriate shape and size, and closed at its end by a body (4) for receiving a reaming head or by a milling element.Tool holder characterized in that the damping means (2) is of the type presenting only radial absorption, and it is provided with at least one elastically deformable means (5), at least close to each end, where said elastically deformable means (5) extend between the envelope of the damping means (2) and the wall of the compartment (3) of the tool holder (1), and are clamped between the wall of the compartment (3) and the damping means (2), and where the ends of the damping means extend in the compartment (3) without stress.The invention is applicable more particularly in the field of accessories for machine tools, with digital control, machining centers, flexible cells and workshops.