Hydraulic Braking Device with Internal Memory for Screwdriver Test Benches
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Solution Overview
Problem
Existing test benches for industrial screwdrivers lack the ability to dynamically adjust braking parameters based on up-to-date features of the brakes, leading to potential inaccuracies in testing and maintenance challenges.
Innovation Solution
Integration of an internal memory within each brake to store parameters such as transfer function, non-linear system features, diagnostic indicators, serial number, and operating log, allowing for real-time data access and adjustment of braking settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If brakes are decoupled and controlled individually with solenoid valves, then braking control precision is improved, but device complexity increases due to multiple valves and distribution blocks
Solution Approach 1:
The hydraulic system is segmented into individual brake units, each with its own solenoid valve and control circuitry. This allows independent control of each brake while maintaining a shared hydraulic pump and reservoir, balancing precision with complexity management
Solution Approach 2:
The system dynamically adjusts braking force for each individual brake through electronically controlled solenoid valves, enabling real-time adaptation of braking parameters based on test requirements and actual brake performance feedback
2Device complexity
If nominal parameters are used for brake control, then device complexity is reduced, but reliability decreases due to parameter drift over time
Solution Approach 1:
The system incorporates feedback mechanisms where actual brake performance parameters are continuously monitored and compared against nominal values. The electronic control unit adjusts solenoid valve actuation based on this feedback to maintain accurate braking control despite parameter drift
Solution Approach 2:
The system allows dynamic modification of control parameters based on actual brake conditions. Instead of fixed nominal parameters, the electronic control unit adjusts hydraulic pressure, flow rates, and solenoid valve duty cycles to compensate for wear, temperature changes, and other factors affecting brake performance
3Reliability
If brakes are replaced frequently to maintain accuracy, then testing reliability is improved, but productivity decreases due to maintenance time
Solution Approach 1:
The system performs preliminary diagnostics and parameter adjustments during idle periods or between tests. The electronic control unit pre-calibrates brake parameters and detects potential issues before they affect testing accuracy, reducing the frequency of maintenance interventions
Solution Approach 2:
The brake system incorporates self-diagnostic capabilities and automatic parameter adjustment features that maintain accuracy without requiring frequent manual intervention. The system monitors its own performance and makes real-time corrections, extending maintenance intervals while preserving testing reliability
Data Source
Figure 1~2
Figure 3
AI summary
Hydraulic braking device for testing industrial screwdrivers, said braking device being arranged on a braking simulation bench, said braking device being controlled by an actuator and by a hydraulic control circuit which supplies pressure to the device on the basis of the indications of an electronic elaboration unit (U) of said bench. Such a braking device is provided with coupling means (A) for said screwdriver to be subjected to test and measurement transducers (TR) controlled by said processing unit, suitable for measuring the torque exerted by the screwdriver and the rotation angle, and such a device comprises a memory which can be read and/or written by the bench electronic elaboration unit.