Extruded Aluminum Pressure Element for Clamping Unit Thickness Compensation
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Solution Overview
Problem
Clamping units in sheet metal processing face challenges in maintaining accurate positioning and triggering irreversibility mechanisms when dealing with varying workpiece thicknesses beyond the allowed tolerance limits, leading to structural complexity and increased costs.
Innovation Solution
A pressure element made from an aluminum alloy with a modulus of elasticity less than or equal to 69,000 MPa, manufactured through extrusion, which compensates for thickness differences up to 2.5 mm by adjusting its geometry, ensuring reliable triggering of the irreversibility mechanism without the need for complex structural modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the clamping unit is designed to accommodate workpiece thickness variations beyond tolerance limits, then the adaptability improves, but the device complexity increases due to additional compensating mechanisms
Solution Approach 1:
The patent changes the material parameter (modulus of elasticity) of the pressure element to ≤69,000 MPa and specifies extrusion as the manufacturing method. This allows the pressure element to deform elastically under load, automatically compensating for thickness variations up to 2.5 mm without requiring additional mechanical compensating mechanisms, thus improving adaptability while maintaining structural simplicity
Solution Approach 2:
The patent uses a standardized pressure element made by extrusion that can be easily replaced. Instead of designing complex adjustable or compensating mechanisms, the solution employs a simple, inexpensive pressure element that achieves thickness compensation through material deformation, reducing both device complexity and manufacturing costs
2Adaptability or versatility
If the pressure element is made from aluminum alloy with modulus of elasticity ≤69,000 MPa through extrusion, then the ability to compensate thickness variations improves, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies a maximum modulus of elasticity (≤69,000 MPa) rather than a minimum, and defines an extrusion manufacturing process. This parameter approach allows for natural variation in the extrusion process while ensuring the pressure element has sufficient elasticity to compensate for thickness variations, balancing manufacturing precision requirements with functional performance
Solution Approach 2:
The pressure element's elastic deformation capability allows it to self-adjust to different thicknesses without requiring precision adjustment mechanisms. The material properties and extrusion geometry are designed to provide automatic compensation, reducing the need for high-precision manufacturing tolerances while maintaining compensation effectiveness
3Adaptability or versatility
If structural modifications are made to compensate for thickness variations, then the adaptability improves, but the production costs increase
Solution Approach 1:
The patent achieves thickness compensation by changing the material parameter (modulus of elasticity to ≤69,000 MPa) and manufacturing method (extrusion) of the pressure element, rather than adding complex structural modifications. This approach maintains ease of manufacture and controls production costs while providing the required adaptability
Solution Approach 2:
The standardized extruded pressure element serves multiple functions: it provides the primary clamping function, compensates for thickness variations up to 2.5 mm, and can be easily manufactured and replaced. This multi-functionality eliminates the need for separate compensating mechanisms, reducing overall production costs while maintaining adaptability
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 extruded aluminum pressure element effectively compensates for significant thickness variations, ensuring the clamping unit operates reliably across a broader range while maintaining structural integrity and reducing production costs through simplified manufacturing and flexibility in design.
Implementation Method 1
an aluminum alloy by extrusion and having a modulus of elasticity (T) less than or equal to 69,000 MPa
Data Source
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Figure 4a~4b
Figure 5a~5c
AI summary
The present invention relates to a pressure element for use in a clamping unit typically used in the field of sheet metal processing, for example for manufacturing bodies for motor vehicles. The present invention also relates to a clamping unit comprising such a pressure element and a to a method for manufacturing the same. In detail, the pressure element (10,10',10",10"') for clamping unit comprises a pair of parallel elongated stems (11,11',11",11"') connected to each other by means of a bridge element (13,13',13",13"') arranged at a first end or at an intermediate position of the stems (11,11',11",11"'), at the first end there being further provided at least one elongated end portion (12,12',12",12"'), the pressure element (10,10',10",10"') being made of an aluminium alloy and is characterized in that the aluminium alloy is for extrusion and has a modulus of elasticity (T) less than or equal to 69,000 MPa.