Conical Tool Holder Clamping With Built-In Ejection Release
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Solution Overview
Problem
Existing tool holders, such as those with conical receiving openings, often require high force for tool insertion and pose difficulties in tool removal, leading to potential sticking issues.
Innovation Solution
A tool or workpiece holder with a clamping device featuring two displaceable clamping elements and an ejection mechanism, utilizing conical clamping and expression surfaces to facilitate easy insertion and removal, with an actuating element that adjusts the clamping elements to ensure precise alignment and prevent tilting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conical receiving openings are used for tool insertion, then tool holding stability is improved, but tool removal becomes difficult and tools may become jammed
Solution Approach 1:
The clamping device is divided into two separate clamping elements (20, 21) that can move independently relative to each other and to the holder body. This segmentation allows one element to provide stable clamping while the other facilitates tool ejection, resolving the contradiction between holding stability and removal ease.
Solution Approach 2:
Instead of relying solely on friction from conical surfaces for both insertion and removal, the invention inverts the approach by providing an active ejection mechanism that pushes the tool out from the clamping elements, reversing the typical passive removal approach.
2Force
If high force is applied for tool insertion into conical receiving openings, then secure tool holding is achieved, but tool removal becomes problematic due to sticking
Solution Approach 1:
The ejection elements (44) with conical upper ejection surfaces are pre-positioned on the underside of the first clamping element to automatically push the tool out when the clamping elements move into the release position, preventing sticking before it occurs.
Solution Approach 2:
The ejection elements act as an intermediary mechanism between the clamping elements and the tool, facilitating smooth tool removal by providing a controlled pushing force that overcomes the friction and sticking forces generated during high-force insertion.
3Manufacturing precision
If clamping elements are made displaceable for precise alignment, then clamping precision is improved, but device complexity increases
Solution Approach 1:
The two clamping elements serve multiple functions: they provide precise clamping when engaged, facilitate tool ejection when moved to release position, and can independently adjust to compensate for manufacturing tolerances in the holder body, achieving universal functionality without proportionally increasing 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
Enables simplified and force-efficient tool or workpiece removal by allowing the clamping elements to move into a release position, pushing the tool out via the ejection device, thus preventing sticking and ensuring easy extraction.
Implementation Method 1
conical clamping surfaces for pressing the tool or workpiece into the receiving opening
Implementation Method 2
ejection elements having a conical upper ejection surface... pressing the tool or workpiece arranged in the receiving opening out of the receiving opening
Data Source
Figure 1~2
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AI summary
The invention relates to a tool or workpiece holder (1) with a receiving body (2) and a clamping device (3) for clamping a tool or a workpiece in a receiving opening (4) of the receiving body (2), wherein the clamping device (3) comprises a first clamping element (20) displaceable in a receptacle (24) of the receiving body (2) transversely to a central axis (23) of the receiving opening (4) and a second clamping element (21) displaceable relative to the first clamping element (10) transversely to the central axis (13) of the receiving opening (2) by means of an operating element (22) with conical lower clamping surfaces (27, 28) on the two clamping elements (20, 21) for drawing the tool or workpiece into the receiving opening (4). According to the invention, a release device (44, 45) for pressing the tool or workpiece out of the receiving opening (4) is arranged on the first clamping element (20) when the clamping elements (20, 21) are moved into a release position.