Rivet Nut Tool Pull-Force Waveform Display for Continuous Testing
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Solution Overview
Problem
Conventional pull test instruments for rivet nut setting tools can only display a single maximum tensile value and do not allow for direct observation of rapid changes in pull force, making it difficult for users to record and analyze continuous operations, leading to potential misjudgments and tool performance issues due to wear and tolerance variations.
Innovation Solution
A data display method for a test instrument that continuously displays pull force values and average values, featuring a shell body with a pull-force detector, circuit module, and multiple display areas to show waveforms and historical data, allowing for real-time observation and diagnosis of tool performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional pull test instruments display only a single maximum tensile value, then the device complexity is reduced, but the measurement precision and information completeness deteriorate because rapid changes in pull force cannot be observed
Solution Approach 1:
The display system is segmented into multiple display areas: a first display area showing real-time waveform and current value, and a second display area showing historical data and average values. This segmentation allows comprehensive measurement information to be presented without overwhelming complexity in a single display unit.
Solution Approach 2:
The solution transitions from displaying only a single scalar value (maximum tensile force) to displaying a two-dimensional waveform curve that shows pull force variation over time. This dimensional change enables observation of rapid force changes and provides much richer measurement information.
2Ease of operation
If conventional test instruments display only single values, then the ease of operation is improved, but the loss of information increases because users must manually record and calculate continuous operation data
Solution Approach 1:
The test instrument performs self-service by automatically recording, storing, and displaying continuous operation data. The device eliminates the need for users to manually record data with paper and pen, as the instrument itself captures and preserves all measurement information including waveforms and historical values.
Solution Approach 2:
The display system maintains continuous action by showing real-time waveform updates and continuously recording operation data. This ensures no information is lost during the testing process, and users can observe the complete pull force variation throughout the entire operation.
3Productivity
If test time is reduced to under 1 second for rapid pull force testing, then the productivity is improved, but the difficulty of detecting and measuring increases because rapid data changes cannot be directly observed
Solution Approach 1:
The solution replaces the human visual observation system with an electronic detection and display system. The pull-force detector and circuit module automatically capture rapid force changes, and the display device visually presents the waveform, enabling detection of fast transient events that would be imperceptible to human eyes during rapid testing.
Data Source
AI summary
A data display method of a test instrument for a rivet nut setting tool is disclosed. When the rivet nut setting tool is operated, a value of a pull force detected by the pull-force detector is transmitted to the first display area through a circuit module, and a first display area displays variation of the value of the detected pull force in waveform, and the first display area also displays an upper-limit waveform value, a waveform data unit, a current value and a historical maximum value; when the rivet nut setting tool is operated continuously, the first display area displays a continuous waveform, and the second display area displays historical data and average values of maximum pull force values.