Clamping Bolt Mechanism With Intermediate Piston Force Amplification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clamping devices require large and strong spring elements to achieve high preload forces, which are inefficient and may not be practical for all applications.
Innovation Solution
A clamping device design that transfers preload force indirectly through intermediate pistons and reinforcing elements, using geometry and arrangement to amplify the force by a factor V, allowing for higher preload without strong spring elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If spring elements act directly on the piston, then the structure is simple, but the preload force is limited
Solution Approach 1:
An intermediate piston is introduced between the spring elements and the main piston to serve as a force amplifier. The intermediate piston receives the spring force and transmits it through reinforcing elements to the main piston, enabling higher preload forces without requiring larger springs. This intermediary mechanism resolves the contradiction by decoupling the direct force transmission path.
Solution Approach 2:
The piston system is segmented into two independent pistons: an intermediate piston that interacts with the spring elements and a main piston that applies the amplified force to the locking elements. This segmentation allows the spring elements to work at optimal dimensions while achieving higher overall force through the force amplification mechanism.
2Force
If larger and stronger spring elements are used, then higher preload force is achieved, but the device size and weight increase
Solution Approach 1:
The intermediate piston acts as a force amplifier that enables standard-sized spring elements to generate higher effective preload forces. By introducing this intermediary mechanism, the system achieves the force multiplication effect without requiring proportionally larger and heavier spring elements, thus resolving the contradiction between force output and component weight.
Solution Approach 2:
The system changes the mechanical parameters through the force amplification factor V, where the effective force on the piston is V times the spring force. This parameter transformation allows standard spring elements to produce higher preload forces, avoiding the need for oversized springs and reducing overall system weight.
3Force
If larger and stronger spring elements are used, then higher preload force is achieved, but the device volume increases
Solution Approach 1:
The intermediate piston and reinforcing elements form a force amplification system that allows compact spring elements to generate high preload forces. This intermediary mechanism enables the system to achieve higher forces within the same volume constraints, resolving the contradiction between force output and device volume.
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 design achieves a higher preload force with the same spring force and travel, enhancing the clamping capability and efficiency of the device.
Implementation Method 1
spring elements which act directly on the piston of the clamping device in order to pre-tension it into the clamping position
Implementation Method 2
reinforcing elements which transmit at least part of the pretensioning force from the intermediate piston to the piston
Data Source
Figure 1
Figure 2
Figure 3
AI summary
To create a clamping device for clamping a clamping bolt arranged on a workpiece or on a workpiece carrier, wherein the clamping device comprises locking elements, a piston for moving the locking elements towards a longitudinal center axis of the clamping device, a first housing part and a second housing part, and a preloading device for clamping the piston into a clamping position, which makes it possible to generate a higher preload force, which preloads the piston into its clamping position, even without the use of larger and stronger spring elements, it is proposed that the preloading device comprises an intermediate piston which, when the piston moves from a release position to the clamping position, moves at least partially in the same direction as the piston, and that the clamping device comprises reinforcing elements.which transfer at least part of the preload force from the intermediate piston to the piston.