Hydraulic Punch Chamber With Self-Regulating Piston Pressure
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Solution Overview
Problem
Existing workpiece processing apparatuses using hydraulic pressure have complex hydraulic-pressure control mechanisms, including pumps and relief valves, which complicate the structure.
Innovation Solution
A workpiece processing apparatus utilizing a hydraulic chamber with a piston and resilient member to control hydraulic pressure without a relief valve, allowing for simpler structure and pressure regulation through the resiliency of the resilient member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex hydraulic-pressure control mechanism including pump and relief valve is used, then hydraulic pressure can be controlled, but device complexity increases
Solution Approach 1:
The invention extracts and removes the relief valve from the hydraulic pressure control mechanism. The piston is configured to move between a retracted position and an extended position, and the relief valve is intentionally omitted from the system. This extraction simplifies the device structure while maintaining hydraulic pressure control functionality through the piston's movement between positions.
Solution Approach 2:
The piston serves dual functions: it controls hydraulic pressure by moving between retracted and extended positions, and it automatically prevents excessive pressure buildup through its own movement characteristics. The system uses the piston's inherent mechanical properties rather than external control components to regulate pressure, making the system self-regulating and simpler.
2Device complexity
If no relief valve is provided, then device complexity is reduced, but hydraulic pressure may be excessively increased
Solution Approach 1:
The relief valve is extracted from the system, and the piston's movement between retracted and extended positions serves as the pressure regulation mechanism. The piston naturally limits maximum pressure through its mechanical configuration without requiring an additional relief valve component.
Solution Approach 2:
The system changes the pressure regulation approach from using a relief valve (pressure release mechanism) to using piston position (volume displacement mechanism). By changing the controlling parameter from pressure threshold to positional state, the system achieves pressure control without excessive pressure buildup while maintaining structural simplicity.
3Quantity of substance
If liquid is supplied from outside continuously, then hydraulic chamber remains filled, but ease of operation decreases
Solution Approach 1:
The hydraulic chamber is designed to be filled with liquid before operation, and the closed structure maintains the liquid without requiring continuous external supply. The system serves itself by retaining the liquid through its sealed configuration, eliminating the need for ongoing external liquid supply operations.
Solution Approach 2:
The liquid is supplied and the hydraulic chamber is filled in advance before the processing operation begins. This preliminary action ensures the chamber is properly filled with liquid, and the closed structure maintains this state throughout operation, eliminating the need for continuous supply during the process.
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 apparatus achieves hydraulic pressure control without the need for a relief valve, preventing excessive pressure and eliminating the requirement for external liquid supply, resulting in a simpler and more efficient processing system.
Implementation Method 1
the piston receives a pressing force directed into the hydraulic-pressure generation chamber via a resilient member
Implementation Method 2
the piston is moved in accordance with the pressing force and increases hydraulic pressure of the liquid
Data Source
AI summary
A workpiece processing apparatus comprises a base member formed with a hydraulic chamber fillable with liquid, a punch and a piston. The hydraulic chamber has a workpiece processing chamber and a hydraulic-pressure generation chamber. The punch is movable between an initial position which is apart from the workpiece processing chamber and a received position at which the punch is partially received in the workpiece processing chamber. When the punch is moved from the initial position to the received position, the punch presses the workpiece into the workpiece processing chamber. The piston is partially received in the hydraulic-pressure generation chamber and receives a pressing force directed into the hydraulic-pressure generation chamber in a course of movement of the punch from the initial position to the received position, and the piston is moved in accordance with the pressing force and increases hydraulic pressure of the liquid.