Modular Hydraulic Chuck Segmentation for Repairability
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Solution Overview
Problem
Existing hydraulic chucks face inefficiencies due to permanent joints that are prone to oil leakage, requiring the entire chuck to be replaced, which is costly and time-consuming.
Innovation Solution
A modular hydraulic chuck design featuring an expansion sleeve, a plurality of pistons, and an actuator ring, allowing for varying clamping force by hydraulically expanding the expansion sleeve through the actuation of the pistons.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic chucks use permanent brazed or welded joints, then structural integrity is maintained, but the entire chuck must be replaced when oil leakage occurs, increasing cost and downtime
Solution Approach 1:
The hydraulic chuck is divided into separable modular components including the body, expansion sleeve, and piston assembly that can be detached and replaced independently. The expansion sleeve features an external cylindrical surface that interfaces with the body through a detachable connection, allowing the sleeve to be removed and replaced without replacing the entire chuck assembly.
Solution Approach 2:
The design enables selective replacement of worn or damaged components such as the expansion sleeve or piston assembly while retaining the main body and other functional components. This allows recovery and reuse of durable parts while discarding only the damaged elements, reducing overall replacement costs.
2Ease of manufacture
If hydraulic chucks use fixed clamping force design, then manufacturing is simpler, but flexibility in adapting to different workpiece requirements is reduced
Solution Approach 1:
The hydraulic chuck incorporates a piston assembly with multiple pistons arranged in series along the expansion sleeve, enabling variable clamping force through differential piston movement. The pistons have different cross-sectional areas, allowing selective engagement to provide multiple clamping force levels while maintaining a relatively simple cylindrical structure.
3Reliability
If hydraulic chucks replace entire units upon component failure, then reliability is maintained, but cost and time efficiency deteriorate
Solution Approach 1:
The hydraulic chuck is divided into separable modular components including the body, expansion sleeve, and piston assembly that can be detached and replaced independently. The expansion sleeve features an external cylindrical surface that interfaces with the body through a detachable connection, allowing the sleeve to be removed and replaced without replacing the entire chuck assembly.
Solution Approach 2:
The design enables selective replacement of worn or damaged components such as the expansion sleeve or piston assembly while retaining the main body and other functional components. This allows recovery and reuse of durable parts while discarding only the damaged elements, reducing overall replacement costs.
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 the replacement of damaged components without replacing the entire hydraulic chuck, provides flexibility in clamping force, and increases torque due to the large surface area used during clamping.
Implementation Method 1
The actuator ring may be configured to actuate the plurality of pistons in the at least one piston chamber to hydraulically expand the expansion sleeve to provide a varying clamping force within the bore
Data Source
AI summary
A hydraulic chuck may include an expansion sleeve, a plurality of pistons, and an actuator ring. The expansion sleeve may include a bore. The plurality of pistons may be axially mounted in at least one piston chamber of the expansion sleeve. The actuator ring may be rotatably mounted relative to the expansion sleeve. The actuator ring may be configured to actuate the plurality of pistons in the at least one piston chamber to hydraulically expand the expansion sleeve to provide a varying clamping force within the bore.