Hydraulic Chuck Flexible Seal Segmentation
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Solution Overview
Problem
Conventional hydraulic chucks with circular seal rings face issues with inadequate sealing under high pressure, leading to oil leakage and premature wear due to deformation and high-temperature friction.
Innovation Solution
The hydraulic chuck employs flexible seal members with annular segments, neck segments, and U-grooves to effectively seal the gap between the fixed and rotary seats, allowing pressurized oil to flow and then restore to prevent contact and deterioration during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circular seal rings are used to seal the gap between fixed seat and rotary seat, then sealing structure is simple, but sealing effectiveness is insufficient under high pressure causing oil leakage
Solution Approach 1:
The seal member is divided into multiple functional segments: a first annular segment fixed to the fixed seat, a second annular segment that contacts the rotary seat, and a neck segment connecting them. This segmentation allows each part to perform its specific function - the first segment provides stable mounting, the neck segment provides flexibility for deformation under pressure, and the second segment provides sealing contact with the rotary seat.
Solution Approach 2:
The neck segment is designed with flexible material properties that allow it to deform under high oil pressure. This flexibility enables the seal member to adapt to the pressure differential and maintain effective sealing contact between the fixed and rotary seats, preventing oil leakage while withstanding high pressure conditions.
2Reliability
If seal rings are designed to constantly seal the gap during rotation, then sealing is maintained, but seal rings wear out quickly due to friction and high temperature
Solution Approach 1:
The seal member transitions from a static sealing configuration to a dynamic one where the second annular segment moves relative to the rotary seat during rotation. The flexible neck segment allows the seal member to accommodate rotational movement while maintaining sealing effectiveness, reducing friction and heat generation that would otherwise cause premature wear.
Solution Approach 2:
The seal member is designed to periodically contact and separate from the rotary seat during operation. The flexible structure allows it to engage when needed for sealing and retract during rotation, creating a periodic action pattern that maintains sealing effectiveness while minimizing continuous frictional contact and heat generation.
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
This configuration ensures effective sealing during operation while preventing seal member deterioration, enhancing the chuck's ability to grip and release workpieces without oil leakage and extending the service life of the seal members.
Implementation Method 1
the seal members are deformed by the pressurized oil so as to seal up the gap to prevent leakage of the pressurized oil
Implementation Method 2
a gap through which the pressurized oil flows is formed between an outer surface of the rotary seat and an inner surface of the fixed seat
Data Source
AI summary
A hydraulic chuck includes a chuck body, a fixed seat, a rotary seat and a plurality of flexible seal members. The fixed seat is fixedly mounted to the chuck body. The rotary seat is rotatably mounted to the fixed seat and cooperates with the fixed seat to define a gap therebetween. Each of the seal members has a first annular segment fixedly mounted to the fixed seat, a neck segment extending from the first annular segment and through the gap, and a second annular segment connected to an end of the neck segment distal from the first annular segment, and disposed adjacent to the rotary seat.