Holder Device Radial Sleeve Segmentation
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Solution Overview
Problem
Existing holder devices with pressure medium systems face challenges in machining precision and interference issues due to the long and thin structure required for pressure transmission, leading to difficulties in enhancing circularity and deviation precision, and necessitate diameter-reducing machining for the device body.
Innovation Solution
A holder device design where the sleeve and support portion are separate from the device body, allowing for small-diameter machining only on the support portion, enabling the use of different materials for optimal deformation control and improved compression/expansion functions, with the pressure guide passageway and chamber formed between the sleeve and support portion, facilitating easier machining and uniform pressure distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the holder device uses a long and thin structure for pressure transmission, then the device can grasp long and thin objects, but the machining precision (circularity and cylindricality) deteriorates
Solution Approach 1:
The holder device is divided into three main segments: device body, sleeve, and support portion. The sleeve and support portion are provided separately from the device body, allowing each component to be manufactured independently with optimal dimensions and tolerances. This segmentation enables the device body to maintain high machining precision while the sleeve can be designed as a long and thin component for grasping without compromising overall manufacturing quality.
2Ease of manufacture
If the device body undergoes diameter-reducing machining to accommodate pressure chamber, then the pressure chamber can be formed, but the structural strength and rigidity deteriorate
Solution Approach 1:
The pressure chamber is positioned in the radial dimension rather than requiring axial length reduction. The sleeve includes a pressure chamber surrounded by an annular gap, allowing pressure application without compromising the axial structural integrity of the device body. This dimensional repositioning enables pressure chamber formation while maintaining the device body's strength and rigidity.
3Ease of manufacture
If the sleeve and support portion are provided separately from the device body, then the machining complexity is reduced, but the device complexity increases
Solution Approach 1:
The device is segmented into modular components (device body, sleeve, support portion) that can be manufactured separately using simpler processes. The sleeve and support portion are provided separately from the device body, allowing each to be optimized for its specific function. This segmentation reduces the machining complexity of individual components while the overall device complexity is managed through standardized assembly interfaces.
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 eliminates the need for diameter-reducing machining on the device body, enhances machining precision, and allows for rigid grasping of objects with improved compression/expansion functions, while enabling uniform pressure application to the object.
Implementation Method 1
a pressure medium held within the pressure chamber to deform the tool insertion portion, thereby to apply a pressure to a grasped portion of the cutting tool for grasping thereof
Implementation Method 2
a pressure guide arrangement for transmitting a supplied pressure along an axial distance between a pressure chamber and a pressure generator
Implementation Method 3
the elastic sleeve is deformable in a radial direction so as to clamp and fix a tool by an action of a pressure medium held within the pressure chamber
Data Source
Figure 1
Figure 2~3
AI summary
Provided is a holder device that uses a pressure medium suitable for grasping a long and thin object to be grasped, that does not require thinning of a device body, and that enables a material suitable for deformation of a sleeve to be used in a part where a pressure chamber is formed. A holder device capable of deforming in a radial direction in which an object (7) to be grasped will be clamped and fixed by the action of a pressure medium, the holder device comprising a device body (2), a sleeve (3) that is disposed at the tip of the device body (2) and that grasps the object (7) to be grasped, a pressure chamber (8) provided encircling the sleeve (3), and a support part (9) that is linked to the device body (2) and that forms the pressure chamber (8) together with the sleeve (3).