Segmented Flywheel Coupling for Low-Wear Setting Tools
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Solution Overview
Problem
Existing flywheel-powered setting tools experience high wear and variability in coupling efficiency due to the fit between the flywheel and the driving element, leading to unpredictable setting quality and reduced tool lifespan.
Innovation Solution
The flywheel is subdivided into multiple parts with complementary V-groove geometries that allow for axial displacement and spring-biased engagement with the driving element, ensuring constant friction pairing and reduced wear, thereby maintaining consistent power transmission throughout the tool's life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flywheel is divided into multiple sections with V-grooves, then the coupling area increases and wear is reduced, but the system becomes over-constrained and not all groove flanks are engaged simultaneously
Solution Approach 1:
The flywheel sections are designed to be axially displaceable relative to each other, transforming the static constrained system into a dynamic one. This allows the sections to self-adjust their positions to achieve optimal engagement of all groove flanks simultaneously, resolving the over-constraint problem while maintaining increased coupling area for reduced wear
2Reliability
If multiple V-grooves are used to increase coupling area, then wear per surface is reduced, but manufacturing precision requirements increase to ensure proper engagement
Solution Approach 1:
The axial displacement capability of the flywheel sections provides a mechanical compensation mechanism for manufacturing tolerances. Instead of requiring extremely precise groove alignment, the sections can move axially to self-align and ensure proper engagement of all V-groove flanks, significantly reducing the stringency of manufacturing precision requirements
3Power
If the flywheel and driving element maintain a frictional connection, then power transmission is achieved, but wear and coupling efficiency variability occur over time
Solution Approach 1:
Dividing the flywheel into multiple sections with complementary V-grooves increases the total coupling area, distributing the frictional contact over more surfaces. This segmentation reduces wear per unit area and maintains more consistent coupling efficiency over time by ensuring better engagement across all contact surfaces
Solution Approach 2:
The dynamic axial displacement of flywheel sections allows the frictional connection to self-adjust and maintain optimal engagement throughout operation, compensating for wear and manufacturing variations to ensure consistent power transmission and coupling efficiency
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 design significantly reduces wear and maintains consistent coupling efficiency, extending the tool's lifespan and ensuring predictable setting quality by evenly distributing frictional forces across the coupling surfaces.
Implementation Method 1
the flywheel components (44, 45) each comprise at least one frictional geometry (47, 48), which can be frictionally connected to a complementary frictional geometry (51, 52) of the driving element (20) to create a frictional connection between the flywheel (13) and the driving element (20)
Data Source
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AI summary
The invention relates to a flywheel-driven setting device comprising a flywheel (13) which can be drivingly connected to a driving element (20) in order for a setting element to be driven into a substrate by means of the driving element (20) during a setting process. In order to create a flywheel-driven setting device in which wear is minimal during operation, the flywheel (13) is subdivided into at least two flywheel parts (44, 45) which are movable relative to each other to a limited degree in the axial direction.