Mobile Cart Trunnion Axis Control for Chassis Cutting Sync
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Solution Overview
Problem
Current manufacturing systems face challenges in efficiently rotating and processing vehicle chassis during various stages, such as cutting and measurement, due to limitations in trunnion axis control and synchronization between different components.
Innovation Solution
A manufacturing system incorporating a mobile cart with rotatable mounting assemblies and a docking station, featuring mechanical and pneumatic couplings, encoders, and a control module that enables precise rotation of the vehicle chassis about a trunnion axis, synchronizing with cutting and measuring robots to prevent twisting and ensure accurate cutting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile cart with rotatable mounting assemblies is used to rotate the vehicle chassis, then the flexibility and positioning capability are improved, but the device complexity increases
Solution Approach 1:
The mounting assembly is divided into multiple independent rotatable components including a first rotatable member and a second rotatable member, each capable of independent rotation. This segmentation allows flexible positioning of the vehicle chassis while keeping each individual component relatively simple in structure.
Solution Approach 2:
The mobile cart with rotatable mounting assemblies serves multiple functions: it can transport the vehicle chassis, rotate it to different orientations, and position it at various angles. This multi-functionality reduces the need for separate dedicated devices for each operation, thereby improving adaptability without proportionally increasing complexity.
2Stability of the object's composition
If mechanical coupling is used to connect mounting assemblies for rotation, then the structural integrity is improved, but the difficulty of detecting and measuring rotational positions increases
Solution Approach 1:
Encoders are introduced as intermediary devices between the mechanical coupling and the control system. These encoders convert mechanical rotational positions into electrical signals that can be easily detected and measured, solving the measurement difficulty while maintaining the structural integrity of the mechanical coupling.
Solution Approach 2:
The patent replaces pure mechanical position detection methods with electrical/electronic encoding systems. The encoders provide precise digital measurement of rotational positions, substituting complex mechanical measurement mechanisms with more reliable and easier-to-read electronic systems.
3Manufacturing precision
If the trunnion axis is synchronized with cutting and measuring robots, then the manufacturing precision is improved, but the device complexity and control requirements increase
Solution Approach 1:
The control module receives feedback from encoders on the mounting assemblies and uses this information to control the cutting and measuring robots. This closed-loop feedback system ensures that the robots are precisely positioned relative to the vehicle chassis orientation, maintaining high manufacturing precision while managing control complexity through automated feedback processing.
Solution Approach 2:
The control module integrates the control of multiple devices (first rotatable member, second rotatable member, cutting robot, and measuring robot) into a single coordinated system. By merging these control functions, the system achieves precise synchronized operation without requiring separate complex control systems for each device.
4Measurement precision
If encoders and control modules are added to measure and control rotation, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The encoders automatically measure and report their own rotational positions without requiring external measurement devices. Each encoder is self-contained and provides its own feedback signal to the control module, eliminating the need for additional complex measurement systems while maintaining high measurement precision.
Data Source
AI summary
A manufacturing system configured for processing a workpiece. The manufacturing system includes a mobile cart with: a first mounting assembly and a second mounting assembly both configured to support the workpiece, and the first mounting assembly further configured to rotate the workpiece; and a first mechanical coupling in cooperation with the first mounting assembly such that rotation of the first mechanical coupling rotates the first mounting assembly. A docking station includes a second mechanical coupling and a motor configured to rotate the second mechanical coupling, the second mechanical coupling configured to cooperate with the first mechanical coupling such that rotation of the second mechanical coupling rotates the first mechanical coupling and the workpiece supported by the first mounting assembly and the second mounting assembly.