Irregular Guide Contour for Rapid Clamping Systems
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Solution Overview
Problem
Conventional rapid clamping systems face challenges in maintaining high tilting moment transmission and optimizing radial locking forces, as the force required to keep clamping bolts in a radial locking position depends on spring stiffness, leading to varying pressures needed for opening the system, and clamping balls fail to prevent deflection under high tilting moments.
Innovation Solution
The rapid clamping system employs an irregular guide contour with different angles of inclination for the inclined guide, allowing for optimized transmission ratios and compensating for path-dependent spring forces, ensuring high tilting moment transmission and optimized clamping forces through varying crank sections and angles of inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If springs with high stiffness are used to maintain high radial locking forces, then the locking reliability is improved, but the pressure required to open the system increases
Solution Approach 1:
The patent applies parameter changes by varying the angle of inclination along the guide contour. The guide contour has different sections with different angles: a first section with a smaller angle for high locking forces and a second section with a larger angle for easier opening. This changes the mechanical advantage parameter dynamically along the motion path, allowing high locking reliability while reducing opening pressure requirements.
Solution Approach 2:
The guide contour is designed with dynamically varying transmission ratios. The angle of inclination is not constant but changes along the displacement path of the clamping bolt. This dynamic geometry allows the system to provide high locking forces when needed (smaller angle section) while requiring less opening pressure (larger angle section), resolving the contradiction between locking reliability and opening force.
2Ease of operation
If clamping balls are used instead of clamping bolts, then the ease of operation is improved, but the ability to transmit high tilting moments deteriorates
Solution Approach 1:
The patent uses clamping bolts with a curved guide contour instead of spherical clamping balls. The curved guide contour provides the smooth motion and ease of operation associated with curved surfaces, while the bolt geometry (as opposed to a ball) maintains the ability to transmit high tilting moments. The curvature is controlled and directional, providing guidance while preserving moment transmission capability.
3Device complexity
If a constant angle guide is used, then the device complexity is reduced, but the manufacturing precision of clamping forces deteriorates
Solution Approach 1:
The guide contour is segmented into different sections, each with a specific angle of inclination. The first section has a smaller angle optimized for locking, and the second section has a larger angle optimized for opening. This segmentation allows each section to be optimized for its specific function, achieving precise clamping forces without excessive overall complexity.
Solution Approach 2:
Different sections of the guide contour have different local properties (different angles of inclination). The first section is designed with a smaller angle for high locking forces, while the second section has a larger angle for easier opening. This local differentiation optimizes the clamping force precision for each operational phase without requiring the entire guide to be overly complex.
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 ensures consistent and high tilting moment transmission while optimizing clamping forces, allowing for efficient locking and unlocking of the clamping pin, even under high loads, by varying the transmission ratio and frictional forces based on the guide contour's design.
Implementation Method 1
a piston which is loaded from one side by springs
Implementation Method 2
at least one clamping bolt arranged to be displaced, in particular, at least substantially perpendicular to the piston axis and motionally coupled to the actuator in both directions of motion via an inclined guide
Data Source
AI summary
The invention relates to a rapid clamping system (50), comprising a clamping housing (12), with a piston (18) acted on from one side by springs (15) and which may be pressurised from the other side, with an actuator (60) arranged on the piston (18) to follow the piston movement, with at least one clamping bolt (32) arranged to be displaced perpendicular to the piston axis (28), in a working coupling acting in both directions of displacement with the actuator (60) by means of an inclined guide (52), whereby, with the springs (16) extended, the clamping bolt (32) takes up a locking position for locking a clamping pin (14) which may be introduced in the clamping housing (12) and which adopts an unlocking position for removal of the clamping pin (14) on corresponding pressurization of the piston (18). The invention is characterized in that the inclined guide (52) has an irregular guide contour (54) with varying angles of inclination (α, β, γ, δ) relative to the piston axis (28) to achieve varying translation ratios.