Riveting Tool Coupling Unit for Blind Rivet Adaptability
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Solution Overview
Problem
Existing riveting tools with hydraulically driven drive pistons are complex and do not allow for easy change of drawing tools, limiting their adaptability to different blind rivet nuts and screws.
Innovation Solution
A riveting tool with a coupling unit that allows easy replacement of drawing tools, featuring a positive connection in both the longitudinal and circumferential directions, enabling reliable transmission of movements and facilitating quick tool changes through the use of coupling half-shells and a guide sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a hydraulic drive unit is used to drive the piston, then the riveting tool achieves sufficient power and control, but the device complexity increases and drawing tool changeability is lost
Solution Approach 1:
The hydraulic drive system is segmented into modular components: a reusable drive piston assembly and interchangeable drawing tool assemblies. The coupling unit divides the tool into separable functional modules, allowing the complex hydraulic portion to remain fixed while simpler drawing tool portions are exchanged based on rivet requirements.
Solution Approach 2:
The drive piston and coupling unit are designed as universal components that can interface with multiple different drawing tool configurations. The standardized coupling interface allows a single hydraulic drive system to perform multiple riveting operations with different blind rivet nuts and screws by simply changing the drawing tool portion.
2Adaptability or versatility
If the drawing tool is made interchangeable for different blind rivet nuts and screws, then the adaptability improves, but the connection reliability and movement transmission may be compromised
Solution Approach 1:
The coupling unit serves as an intermediary component between the drive piston and the interchangeable drawing tool. This mediator ensures reliable positive connection through geometric interlocking features while enabling tool changes. The coupling unit translates and transmits movements reliably between the hydraulic drive and various drawing tool configurations.
Solution Approach 2:
The coupling unit is pre-configured with positive connection features (protrusions and recesses) that automatically align and secure the drawing tool in the correct position during assembly. This preliminary design of connection geometry ensures reliable movement transmission without requiring complex adjustment or alignment procedures during operation.
Data Source
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AI summary
The invention relates to a riveting tool for setting blind rivet nuts and/or blind rivet screws, comprising a hydraulically adjustable drive piston between a starting position and an end position, and a draw mandrel that is operatively connected to the drive piston and adjustable between a rivet receiving position and a setting position. To provide a riveting tool with a hydraulically driven drive piston that offers simple and good adaptability to the blind rivet screws and/or blind rivet nuts to be set, it is provided that a coupling unit (12), a draw tool (10) adapted to the blind rivet nut and/or blind rivet screw, and the draw mandrel (11) are designed for a positive-locking connection of the draw mandrel (11) to the draw tool (10) that can be released in the longitudinal and circumferential directions.