Cam-Driven Riveting Assembly for Fast, Precise Rivet Insertion
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Solution Overview
Problem
Existing riveting apparatuses in assembly plants face challenges in producing high volumes of multicomponent articles, such as hinges, efficiently and with minimal waste, while ensuring optimal functionality and speed.
Innovation Solution
A riveting apparatus with a support frame, integrated rivet insertion and riveting devices, and cam movement means that allows for precise and fast rivet insertion and deformation, utilizing electric motors for efficient operation and accommodating rivets of varying lengths through a cam system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If riveting apparatus operates at high speed to produce large volumes, then productivity increases, but manufacturing precision and functionality may deteriorate
Solution Approach 1:
The apparatus performs preliminary alignment and positioning of the rivet before insertion. The rivet is pre-positioned in the anvil and the pressing tool is pre-aligned with the rivet head, ensuring precise insertion even at high speeds. This preliminary preparation eliminates the need for complex real-time adjustments during the riveting process.
Solution Approach 2:
The patent replaces traditional mechanical positioning systems with a controlled pressing mechanism that uses regulated force application. The pressing tool applies controlled mechanical force through a defined path to deform the rivet head, ensuring consistent precision without complex mechanical guidance systems.
2Productivity
If riveting apparatus operates at high speed, then productivity increases, but reliability and optimal functionality may worsen
Solution Approach 1:
The system performs preliminary positioning of the rivet in the anvil and pre-alignment of the pressing tool before the actual riveting action. This ensures that even at high speeds, each rivet is properly positioned and the pressing force is applied correctly, maintaining reliability and optimal functionality of the assembled articles.
Solution Approach 2:
The apparatus incorporates control systems that monitor and regulate the pressing force and rivet insertion process. This feedback mechanism ensures that the riveting parameters remain within optimal ranges, maintaining product reliability and functionality even during high-speed operation.
3Adaptability or versatility
If traditional riveting apparatus is used, then device complexity is low, but adaptability to different rivet dimensions is poor
Solution Approach 1:
The patent employs a cam mechanism that converts rotational motion into controlled linear motion, allowing the pressing tool to adapt its movement path and force application to accommodate rivets of different lengths. The cam profile can be adjusted or selected based on rivet dimensions, providing versatility without requiring completely different apparatus configurations.
Solution Approach 2:
The apparatus allows changing operational parameters such as cam profile, pressing force, and stroke length to accommodate different rivet dimensions. By adjusting these parameters, the same basic apparatus can handle various rivet types and lengths, achieving adaptability without proportionally increasing device complexity.
4Productivity
If faster production lines are created, then productivity increases, but waste increases and manufacturing precision deteriorates
Solution Approach 1:
The apparatus performs preliminary positioning and alignment of the rivet before insertion, ensuring that each rivet is correctly placed. This prevents misinsertion and subsequent rejection or rework, thereby reducing material waste even during high-speed production. The preliminary preparation ensures first-time-right assembly.
Solution Approach 2:
The controlled pressing mechanism replaces less precise mechanical systems, applying regulated force to ensure proper rivet deformation and assembly quality. This reduces the occurrence of defective assemblies that would require disposal or rework, thereby minimizing material waste while maintaining high productivity.
Data Source
AI summary
A riveting apparatus for application and riveting a rivet to a component of an article being processed in a work region of the riveting apparatus is provided. The riveting apparatus includes a rivet insertion device for insertion of the rivet into the component and a riveting device for the riveting of the rivet.