Self-Centering Vise with Floating Spindle Adjustment
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Solution Overview
Problem
Existing self-centering vises for machining fixtures lack precise centering adjustment mechanisms integrated into the central support structure, which can lead to inaccuracies in holding and positioning workpieces during machining processes.
Innovation Solution
The design incorporates a threaded spindle with a central boss that floats within a central support, allowing for adjustment via fine-threaded collars, and a locking mechanism to secure the spindle's position, enabling precise centering of sliding blocks and clamping surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional self-centering vise design is used with integrated adjustment mechanism in sliding blocks, then the structure is simpler, but the centering adjustment precision is insufficient
Solution Approach 1:
The adjustment mechanism is segmented from the sliding blocks and integrated into the central support structure. The central support is divided into adjustable components (collars) and fixed components (mounting screw), allowing independent adjustment of the spindle position relative to the support, thereby achieving precise centering without complicating the sliding block structure.
Solution Approach 2:
The central support structure acts as an intermediary between the threaded spindle and the sliding blocks. By adjusting the position of the spindle within the central support through collars and mounting screw, the centering precision is improved without directly modifying the sliding blocks, thus maintaining structural simplicity while achieving high precision.
2Adaptability or versatility
If the threaded spindle position is fixed in the central support, then the structure is more stable, but the centering adjustment capability is lost
Solution Approach 1:
The central support structure incorporates adjustable collars and a mounting screw that allow the threaded spindle position to be dynamically adjusted along the longitudinal axis. Once the desired centering position is achieved, the mounting screw locks the spindle in place, providing stability. This dynamic adjustment mechanism enables both centering adaptability and position stability.
Solution Approach 2:
The position parameter of the threaded spindle relative to the central support is made adjustable through the collars and mounting screw mechanism. By changing the longitudinal position parameter of the spindle, precise centering can be achieved while maintaining structural stability through the locking mechanism.
3Manufacturing precision
If fine-threaded collars are used to adjust spindle position, then the centering precision is improved, but the adjustment mechanism becomes more complex
Solution Approach 1:
The fine-threaded collars are merged with the central support structure, integrating the adjustment function into the support itself rather than adding separate adjustment mechanisms to the sliding blocks. This combination achieves high centering precision while maintaining overall structural simplicity.
Solution Approach 2:
The central support structure serves multiple functions: it provides structural support for the threaded spindle, enables precise centering adjustment through fine-threaded collars, and secures the spindle position through the mounting screw. This multi-functionality reduces the need for separate adjustment mechanisms, thereby achieving high precision without excessive 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
This solution provides a precise and secure method for centering and clamping workpieces, enhancing the accuracy and reliability of machining operations by allowing for fine adjustments and secure locking of the spindle's position within the central support.
Implementation Method 1
Fine-threaded collars are threaded into the central support that fully enclose and constrain the central boss on the threaded spindle. The longitudinal position of the threaded spindle within the central support can therefore be adjusted by adjusting the positions of the fine-threaded collars
Implementation Method 2
A gap in one side of the central support allows the adjustment of the collars to be locked by tightening a central support mounting screw
Data Source
AI summary
A tooling fixture that provides a self-centering vise to hold a work piece is described. The design provides a means to allow a centering adjustment of the clamping surfaces that is integrated into the central support structure for the threaded spindle.