Rotatable Clamping Lever for Adjustable Link Clamp Eccentric Loading
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Solution Overview
Problem
Conventional link clamps with offset levers suffer from high eccentric loading, distortion, and uneven clamping forces, limiting their ability to securely hold parts at non-front positions without requiring recalibration.
Innovation Solution
An adjustable link clamp with a rotatable clamping lever that allows for nearly infinite positioning without altering the distance between the clamping point and the housing, utilizing a ball-bearing mechanism to facilitate rotation and maintain consistent clamping pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If offset clamping levers are used to hold parts at non-front positions, then clamping versatility is improved, but eccentric loading increases causing clamp damage and uneven clamping forces
Solution Approach 1:
The clamping lever is made rotatable relative to the housing through a ball-bearing mechanism, allowing the lever to dynamically adjust its angular position while maintaining a fixed radial distance from the mounting flange. This dynamic positioning capability enables versatile clamping at different angles without inducing eccentric loading, as the lever can align radially with the mounting flange regardless of the clamping position around the part.
2Adaptability or versatility
If offset clamping levers are used to reach different clamping positions, then adaptability is improved, but clamping precision deteriorates due to lever distortion and uneven forces
Solution Approach 1:
The rotatable clamping lever allows precise angular positioning while maintaining radial alignment with the mounting flange, ensuring uniform force transmission. The ball-bearing mechanism enables smooth rotation to any angle, and the radial geometry ensures that the clamping force is always applied along the line of action passing through the mounting flange center, eliminating distortion and ensuring uniform clamping force distribution.
3Adaptability or versatility
If the clamping lever position is adjusted to clamp parts at different locations, then versatility is improved, but recalibration is required which reduces productivity
Solution Approach 1:
The rotatable clamping lever with fixed radial distance allows the lever to be rotated to different angular positions without changing its distance from the mounting flange. This means the clamp can be quickly repositioned around different parts or different locations on the same part without requiring recalibration, as the radial geometry is inherently maintained by the ball-bearing rotation mechanism.
4Device complexity
If a fixed-position clamping lever is used, then structural simplicity is maintained, but adaptability to different clamping positions is limited
Solution Approach 1:
The clamping lever is converted from a fixed position to a rotatable position through the ball-bearing mechanism, allowing the lever to assume multiple angular positions while maintaining a simple radial connection to the mounting flange. This dynamic capability provides near-infinite positioning options without significantly increasing structural complexity, as the rotation mechanism is compact and integrated into the existing clamp housing.
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 secure clamping of parts at various positions without recalibration, reducing eccentric loading and maintaining consistent clamping forces across different orientations.
Implementation Method 1
A plurality of ball bearings may be placed in the channel to facilitate rotation of the lug in the recess while preventing the lug from lifting out of the recess.
Implementation Method 2
Hydraulic clamps typically include a housing adapted for attachment to a fixture, a piston telescopically received within the housing for movement between a clamped position and a released position when hydraulic fluid is supplied to the housing
Data Source
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AI summary
A link clamp for holding a part on a fixture has a housing with a bore with a longitudinal axis; a piston received in the bore and shiftable between retracted and extended positions; a clamping lever pivotally connected to one end of the piston; and a link assembly coupled for shifting the clamping lever between clamped and released positions. The clamping lever is configured to rotate relative to the housing in a single plane substantially perpendicular to the longitudinal axis of the bore so that the clamping lever may be positioned on any side of the housing without altering the distance between the contact point of the clamping lever and the mounting flange of the housing.