Magnesium Component Truing with Datum-Guided Plastic Bending
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Solution Overview
Problem
Vehicle manufacturers face challenges in producing vehicle components made from lighter materials like magnesium or aluminum that are warped and do not comply with dimension and tolerance requirements, necessitating a method to accurately bend and true these components to meet regulatory and consumer standards.
Innovation Solution
A truing machine and process that includes holding devices to secure components at fixed datums and bending devices to apply forces at specific locations, controlled by a system that evaluates and adjusts the components to meet dimensional requirements through precise manipulation routines, using measurement devices to assess compliance and execute necessary bending operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If lighter weight materials like magnesium or aluminum are used to reduce vehicle weight, then fuel economy improves, but the components become warped and do not comply with dimension and tolerance requirements
Solution Approach 1:
The patent applies preliminary action by performing bending operations on magnesium components after casting or stamping but before final assembly. The truing machine pre-adjusts the component geometry to compensate for expected warping, ensuring the component will meet dimensional requirements after cooling and settlement. This preliminary correction prevents compliance issues from arising in the first place.
Solution Approach 2:
The patent utilizes parameter changes by applying controlled thermal and mechanical parameters to the magnesium component. The heating element raises the component temperature to increase ductility, while the bending device applies specific forces to achieve the desired shape. By adjusting these parameters (temperature, force magnitude, duration), the system transforms the component from a warped state to a compliant state.
2Productivity
If conventional casting or stamping processes are used for large-format magnesium components, then production capability is maintained, but the components are produced with warping outside dimension and tolerance requirements
Solution Approach 1:
The patent applies self-service by implementing an automated feedback control system. Measurement devices continuously monitor component dimensions during the truing process, and the control system automatically adjusts bending parameters based on real-time data. This self-regulating mechanism ensures dimensional compliance without requiring constant manual intervention, maintaining high productivity while achieving precision.
Solution Approach 2:
The patent implements feedback by using measurement devices to continuously monitor the component's dimensional status during the truing process. The control system receives this measurement data and adjusts the bending device's actions accordingly. This closed-loop feedback ensures that the component reaches the precise target dimensions while maintaining efficient production throughput.
3Manufacturing precision
If truing operations are performed on magnesium components, then dimensional compliance is achieved, but the process requires precise control and manipulation to avoid further distortion
Solution Approach 1:
The patent applies universality by designing a multi-functional truing machine that combines heating, bending, and measurement capabilities in a single integrated system. The control system manages multiple functions (temperature control, force application, dimensional measurement) through a unified interface, reducing operational complexity despite the sophisticated processes involved. This multi-functional approach achieves dimensional compliance without proportionally increasing device complexity.
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 solution effectively brings magnesium or aluminum components into compliance with manufacturer specifications, ensuring they meet dimensional and tolerance requirements, thereby addressing the warping issues and enabling the use of lighter materials while maintaining structural integrity and safety standards.
Implementation Method 1
The at least one bending device is configured to plastically deform the component
Data Source
AI summary
A machine for bending a casted or stamped component into compliance with dimension and tolerance requirements, includes a base and at least one fixed holding device coupled to the base and configured to hold a corresponding datum of the component. The machine further includes at least one bending device coupled to the base and configured to engage a corresponding bending datum of the component, and a control system configured to control the at least one fixed holding device and the at least one bending device during a manipulation routine. The at least one fixed holding device is configured to hold the component in a predetermined spatial orientation relative to the base. The at least one bending device is configured to plastically deform the component.