#Blogs: Mould Tools & Jigs
Universal Holding Fixtures: The Flexible Solution for Aerospace and Automotive
Learn more about universal holding fixtures and how MICADO ranks among the world leaders in the aerospace and automotive industry with innovative solutions.
What are universal holding fixtures (universal holding fixture UHF)?
In modern manufacturing of complex components for aerospace and automotive, the industry is faced with a special challenge:
How can different component geometries be clamped efficiently and precisely without having to manufacture a specific fixture for each individual part? The answer lies in universal holding fixtures.
In contrast to conventional holding fixtures that fix the component over the entire surface, universal holding fixtures rely on an intelligent system of vacuum suction cups. These adapt actively or passively to the local curvature of the component and are brought to the corresponding height by actuators in one dimension. The surface of the component to be clamped is thereby replicated at points, typically in grid spacings of 200 mm to 500 mm. The special thing: a single such fixture can be used for an entire family of parts and is therefore referred to as “universal.”
Overview of a universal holding fixture with multiple actuators and suction cups
The advantages of universal holding fixtures from MICADO:
MICADO belongs worldwide to the leading providers of universal holding fixtures and has made a name for itself in the industry through continuous innovation. The advantages of our solutions are diverse:
Flexibility and economic efficiency
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Tailor-made table size and individually positionable actuators
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One fixture for multiple component geometries
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Significant cost reduction compared to part-specific solutions
Robustness and precision
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High rigidity for demanding drilling and milling operations
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Accuracy up to 0.1 mm
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Sealed for wet machining
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Low maintenance due to high-quality components
Technological flexibility
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Stroke length up to 2 meters possible
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Multi-end-effector systems
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Swiveling suction cups
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Quick and easy replacement of actuators
Active or passive: the right solution for every requirement
Depending on the specific requirements as well as the underlying production process, MICADO offers two system variants:
Passive systems: Cost-efficient and robust
Close-up of a pneumatic actuator in action
Passive universal holding fixtures rely on pneumatically driven actuators and are characterized by their robustness:
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The actuators travel sequentially, whereby the milling machine defines the end position as a stopper
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Direct integration into the CNC machine without its own control is possible
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Very robust and reliable, even in environments with a lot of water
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Cost-efficient solution with very high precision
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Control takes place directly via the CNC machine
Active systems: Fast and flexible
Active clamping device with servo drive and BECKHOFF control/HMI
Active systems with servo drive and control offer maximum flexibility:
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All actuators travel synchronously and minimize setup time
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Retracts during milling to prevent collisions with the milling head are possible
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Active shaping: The actuators can pull or push the component into the desired shape
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Intuitive operation via HMI (Human Machine Interface)
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Ideal for complex machining cycles and frequent part changes
Individual actuator positions for optimum results
A decisive advantage of MICADO systems is the flexibility in positioning the actuators. If the components are known at the beginning of the project, the actuators can be perfectly matched to their shape and requirements.
The result is convincing:
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Reduced number of required suction cups
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Maximum clamping quality
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Precise, collision-free positioning close to the milling tool
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If necessary, simple grid positionings can also be implemented quickly and efficiently
Various end effectors for maximum adaptability
The versatility of MICADO holding fixtures is particularly evident in the selection of the end effectors. As an alternative to the proven round suction cups, an individual hard tool can be mounted at each position:
MICADO vacuum suction cups
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Freely movable
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Various sizes available
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Ideal for curved surfaces
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Uniform force distribution
Hardtools
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For surface support
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Precise component alignment
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Improved component support in the monolithic area
Prevention of vibrations during machining
This combination makes component positioning particularly easy and at the same time ensures optimal stability during machining.
Hardtool clamping device made of PU (polyurethane)
The importance of professional consulting
Above all, professional consulting is important for universal vacuum holding fixtures for project success,” emphasizes Ing. Markus Rath, Head of Tool & Fixture Construction at MICADO.
The selection of the right solution depends on numerous factors:
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Component geometry and family
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Type of machining and process
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Cycle time and production volume
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Environmental conditions
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Budget and ROI requirements
Through years of collaboration with renowned Tier-1 suppliers from the aerospace industry, MICADO has extensive know-how. Tool design always happens in close coordination with the technicians of the customers.
MICADO accompanies you through the entire project
From the first idea to final commissioning, MICADO stands by your side:
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Conception: Joint analysis of the requirements and development of the optimal solution
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Construction: Detailed design taking all relevant parameters into account
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Manufacturing: Precise implementation with high-quality components
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Commissioning: Support until successful integration into your production process
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Support: Continuous support even after project completion
Conclusion
Universal holding fixtures from MICADO offer a highly flexible, precise, and economical solution for the production of complex components in the aerospace and automotive industry. The ability to choose between active and passive systems, combine various end effectors, and position the actuators individually makes this technology an indispensable tool in modern production.
With its expertise as one of the world’s leading providers, MICADO supports companies in finding the optimal clamping solution for their specific requirements and implementing it successfully. The combination of technological innovation, professional consulting, and comprehensive service makes the difference.
