Parallel Kinematic Riveting with Segmented Tool Heads
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Solution Overview
Problem
Current automatic riveting systems require high-precision, expensive multi-tool heads with complex positioning mechanisms, leading to high maintenance costs and frequent breakdowns due to the lack of precision in anthropomorphic robots used for repetitive tasks.
Innovation Solution
An enhanced automatic riveting system utilizing a set of separate single-function heads fixed on a parallel kinematic machine, which performs precise positioning movements, eliminating the need for complex tool-holder head-changing mechanisms and allowing for precise tool alignment at the work point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a rotating multi-tool head with complex positioning mechanisms is used, then multiple functions can be performed at the same work point, but the device complexity and cost increase significantly
Solution Approach 1:
The patent divides the multi-tool head into separate single-function heads, each performing one specific operation (drilling, countersinking, rivet insertion, etc.). These simplified heads are mounted on individual linear axes of the parallel kinematic machine, eliminating the need for complex rotating mechanisms while maintaining multi-functionality through sequential positioning of the simplified components.
2Manufacturing precision
If high-precision materials and mechanisms are used in the multi-tool head, then repetitive positioning precision is improved, but the cost and maintenance requirements increase
Solution Approach 1:
The patent replaces the complex mechanical positioning system of the rotating multi-tool head with a parallel kinematic machine that uses coordinated linear movements along multiple axes. This substitution transfers the positioning precision requirement from the tool holder mechanism to the machine's linear axes, which are simpler to manufacture and maintain while achieving the same positioning accuracy.
Data Source
AI summary
An enhanced automatic riveting system of the type used in robotized precision facilities to perform multiple functions, such as boring, reaming, rivet insertion, riveting, cleaning, etc. at a single work point, using the same equipment, characterized by the fact that it uses a multi-tool head, which does not move itself but is fixed on a parallel kinematic machine, which carries out all the combined positioning movements of the multi-tool head, performing the relevant position corrections between the different physical locations of the separate tools placed in the tool-holder head.