Hydraulic Distributor for Industrial Screwdriver Test Benches
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Solution Overview
Problem
Existing test benches for industrial screwdrivers face reliability issues due to shared hydraulic circuits, leading to inconsistent braking responses across different brakes, affecting the accuracy and repeatability of screwdriver testing.
Innovation Solution
Incorporating a hydraulic distributor with solenoid valves to selectively control and adjust pressure individually for each brake, allowing dedicated control and maintaining desired pressure levels, thereby ensuring precise and reliable braking performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a shared hydraulic circuit with a common pressure regulating valve is used to feed multiple brakes, then the device complexity is reduced and ease of manufacture is improved, but the reliability and measurement precision of braking responses deteriorate due to inconsistent pressure distribution across different brakes
Solution Approach 1:
The shared hydraulic circuit is segmented into individual independent circuits for each brake. Each brake receives pressurized fluid through its own dedicated hydraulic circuit with an independent pressure regulating valve, eliminating the interference and inconsistency caused by the common circuit while maintaining manageable system complexity through modular architecture
Solution Approach 2:
Each brake is equipped with locally optimized pressure regulation capabilities through individual pressure regulating valves. This allows each brake to maintain its own optimal pressure level independently, ensuring that local braking performance is not compromised by the varying demands or characteristics of other brakes in the system
2Ease of operation
If a shared hydraulic circuit with a common pressure regulating valve is used, then the ease of operation is improved through centralized control, but the measurement precision and reliability of individual brake testing deteriorate due to pressure fluctuations affecting multiple brakes simultaneously
Solution Approach 1:
The hydraulic control system is segmented into independent control channels, with each brake having its own pressure regulating valve. This segmentation allows centralized control logic to operate independently on each channel, ensuring that measurement precision for one brake is not affected by pressure fluctuations in other brakes while maintaining ease of operation through standardized control procedures
Solution Approach 2:
Each brake circuit incorporates feedback mechanisms through its dedicated pressure regulating valve, which continuously monitors and adjusts the pressure for that specific brake. This feedback loop ensures stable and precise pressure maintenance for each brake independently, eliminating the cross-interference that occurs in shared circuits where pressure changes in one brake affect others
3Reliability
If individual pressure regulating valves are assigned to each brake, then the reliability and measurement precision of braking responses are improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The hydraulic system is divided into modular independent circuits, with each circuit containing a complete set of control components for one brake. This segmentation improves reliability by isolating each brake's performance to its own circuit while managing complexity through standardized modular units that can be manufactured and assembled systematically
Solution Approach 2:
Each independent hydraulic circuit is designed with universal components that can be standardized across all brakes. The pressure regulating valves, conduits, and control mechanisms follow uniform design specifications, allowing the same component types to serve multiple brakes. This universality reduces manufacturing complexity and cost despite the increased number of components, as standardized parts can be produced in volume and assembled through repeatable procedures
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution ensures consistent and precise braking responses across different brakes, enhancing the reliability and accuracy of screwdriver testing by maintaining actual pressure closer to the desired level, improving the overall testing process.
Implementation Method 1
a hydraulic distributor (D) is present between said brakes and said pressure regulating valve, said hydraulic distributor comprising solenoid valves able to select and activate each brake to which it is connected
Implementation Method 2
said hydraulic distributor comprising solenoid valves able to select and activate each brake
Data Source
AI summary
System for verifying the proper functioning of industrial screwdrivers placed on a test bench that has a plurality of hydraulic brakes (F), with which the screwdriver is associated, suitably controlled by a hydraulic circuit comprising one pump (P), which withdraws the fluid from a reservoir (T) and provides it to a pressure regulating valve (VP), which in turn provides it to the brakes. Each brake is provided with measuring transducers (TR), connected to an electronic driver board (SP). A computer (U) communicates with such card and comprises a suitable driving program stored thereon, the driving program, once an operator has selected the brake to be used for testing the screwdriver, being able to progressively increase the braking capacity of the brakes by adjusting the pressure, until reaching a complete stop of the electronic screwdriver.