Hydrostatic Bearing Position Detection via Guide Pin
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Solution Overview
Problem
Existing bearing arrangements face challenges in allowing a rotor component to perform circular back-and-forth oscillatory motion relative to a stator component with coordinated cavities of increasing and decreasing volumes, while effectively managing oil flow and pressure for precise control of motion and lubrication.
Innovation Solution
A bearing arrangement with a stator and rotor component, featuring a guide rail or guide curve oriented at an angle, a back-and-forth guide pin, and a two-way valve arrangement to control oil flow between cavities, ensuring hydrostatic lubrication and precise control of oscillatory motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rotor component performs circular back-and-forth oscillatory motion relative to a stator component with coordinated cavities, then the bearing arrangement achieves precise control of motion and lubrication, but the device complexity increases due to the need for precise coordination of cavities and control mechanisms
Solution Approach 1:
The patent combines the position detection function with the existing bearing structure by integrating a detection component that interacts with the guide rail or guide curve. The detection component is merged into the bearing arrangement, sharing the same structural space and working in conjunction with the guide rail/curve and guide pin mechanism, thereby achieving precise position detection without proportionally increasing overall device complexity.
Solution Approach 2:
The patent introduces a detection component as an intermediary element that bridges the mechanical motion of the rotor and the measurement system. This detection component converts the mechanical position information (through its interaction with the guide rail/curve and guide pin) into detectable signals, enabling precise position detection while maintaining the simplicity of the core bearing structure.
2Ease of operation
If a guide rail or guide curve is oriented at an angle and a back-and-forth guide pin is used, then the control of oscillatory motion precision is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The guide pin is designed to move back-and-forth along the angled guide rail or guide curve, and its own motion along this predefined path automatically generates the desired oscillatory motion control. The system uses the geometric relationship between the guide pin, guide rail/curve, and rotor to self-regulate the motion, reducing the need for external control mechanisms and lowering manufacturing precision requirements for additional components.
3Reliability
If a two-way valve arrangement is used to control oil flow between cavities, then the hydrostatic lubrication performance is enhanced, but the device complexity increases
Solution Approach 1:
The two-way valve arrangement is designed to perform multiple functions: controlling oil flow between cavities, maintaining hydrostatic lubrication, and potentially regulating pressure. By making the valve multi-functional, the patent reduces the need for separate components for each function, thereby enhancing hydrostatic lubrication performance while minimizing the increase in device complexity.
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
Enables precise control of the rotor's oscillatory motion and amplitude, providing strong hydrostatic lubrication to absorb radial, axial, and bending forces, enhancing the bearing arrangement's performance and adaptability.
Implementation Method 1
a number of cavities (minimum two) that are formed with an increasing volume, at least in terms of a volume, and a decreasing volume, at least in terms of a volume, during rotation of the rotor component in an initial direction
Implementation Method 2
providing strong hydrostatic lubrication to absorb radial, axial, and bending forces
Data Source
AI summary
The bearing assembly, consisting of a stator component (S1) and a rotor component (R1), where the rotor component is adapted for a back-and-forth oscillatory movement (P, −P) relative to the stator component, whereby a number of cavities (301 and 302; 303 and 304) coordinated along the outer periphery of the rotor component and the inner periphery of the stator component, formed with an increasing volume (301 and 302) and a decreasing volume (303 and 304), respectively, during rotation of the rotor component in an initial direction (P) from an initial position (IP) and towards a final position (FP), while the cavities allow the volumes to decrease and increase during a rotational motion of the rotor component in a second direction (−P) in relation to the stator component (S1). The invention specifies that the above-mentioned bearing arrangement is to be adapted to interact with an instrument (M1) in order to determine, with the help of at least two components, the momentary position of the rotor component in relation to the stator component.