Adjustable Slider Holder for Varying Diameter Mechanical Parts
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Solution Overview
Problem
Existing devices for holding mechanical parts, such as clamping chucks and mandrels, face limitations in accommodating pieces with varying diameters and shapes, leading to suboptimal clamping, machining defects, and the need for costly grinding to achieve acceptable tolerances, while also failing to ensure precise positioning and concentricity during machining.
Innovation Solution
A device with a slider-holder system featuring a body and head with conical areas and lateral bores, where sliders are adjusted to slide within these bores, allowing for large amplitude movement without deformation, enabling the precise positioning and clamping of pieces with varying diameters and shapes, and allowing the passage of bars, thus facilitating precise machining without grinding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional split tongs with elastic displacement are used, then the structure is simple, but the range of diameters of pieces that can be received is very limited and clamping precision deteriorates
Solution Approach 1:
The patent employs sliders that can dynamically adjust their position within lateral bores to accommodate varying piece diameters. The sliders move along with the piece during insertion and can be positioned at different heights to match the piece diameter, providing adaptive clamping for a wide range of diameters while maintaining a relatively simple overall structure.
Solution Approach 2:
The invention changes the geometric parameters of the clamping system by providing multiple lateral bores at different heights and angles. This allows the sliders to be positioned at optimal locations for different piece diameters, effectively expanding the adaptable diameter range without significantly increasing structural complexity.
2Manufacturing precision
If conventional split tongs are used for bars with diameter fluctuations, then the structure is simple, but manufacturing precision deteriorates due to suboptimal clamping
Solution Approach 1:
The sliders dynamically adapt to bars with diameter fluctuations by moving to appropriate positions within their lateral bores. This dynamic adjustment ensures that the clamping points remain optimally positioned even when the bar diameter varies, maintaining high clamping precision without requiring complex active control systems.
Solution Approach 2:
The clamping system is segmented into multiple independent sliders that can be positioned separately in different lateral bores. This segmentation allows each slider to independently adapt to local diameter variations on the bar, ensuring precise clamping across the entire workpiece even when diameter fluctuates along its length.
3Adaptability or versatility
If mandrels with jaws movable in groove without adjustment are used, then adaptability to great range of diameters is achieved, but positioning precision deteriorates
Solution Approach 1:
Unlike fixed grooves, the lateral bores in this invention are designed to work with adjustable sliders that can be positioned at different locations. This dynamic positioning capability maintains precision while achieving adaptability, as the sliders can be optimally positioned for each specific piece diameter rather than relying on a single fixed groove path.
Solution Approach 2:
The sliders act as intermediaries between the lateral bores and the piece being clamped. They provide precise positioning contact while allowing adjustment to accommodate different diameters, effectively decoupling the precision positioning function from the adaptability function and allowing both to be optimized independently.
4Manufacturing precision
If bars are ground to achieve acceptable tolerance range, then manufacturing precision is improved, but productivity deteriorates due to significant cost and time
Solution Approach 1:
The invention performs preliminary positioning action through the adjustable sliders that can be pre-positioned in the lateral bores to match the actual bar diameter. This preliminary adaptive positioning ensures precise clamping without requiring preliminary grinding of the bar, thereby maintaining manufacturing precision while significantly improving productivity by eliminating the grinding step.
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 device ensures improved positioning precision, reduces machining defects, and allows the use of bars with diameter fluctuations, eliminating the need for pre-grinding, while maintaining a rigid clamping area close to the machining zone, enhancing overall machining quality.
Implementation Method 1
the head comprising a conic area, the maintaining device comprising furthermore at least two sliders and an actuation element for said sliders
Data Source
AI summary
This invention relates to a maintaining device for mechanical pieces, comprising a slider-holder formed by a body and a head with a central bore in which a part of the piece to be maintained is placed, the piece to be maintained exceeding the head, the head comprising a conical area, the maintaining device having at least two sliders and an actuation element for the sliders, wherein the head comprises at least two lateral bores, one leading into the conical area and the other to the central bore, the sliders are placed in the lateral bores, the sliders being adjustable in the lateral bores, the sliders exceeding the conical area of the head, the actuation element of the sliders being arranged to move the sliders in the corresponding lateral bores along an axis perpendicular to a longitudinal axis of the central bore.