Hub Remover Tool with Threaded Insert for Seized Hubs
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Solution Overview
Problem
The corrosion and seizing of hub assemblies to suspension arms due to dissimilar metals make it difficult to separate them effectively.
Innovation Solution
A hub remover tool comprising a hub remover plate, a threaded insert, and a pusher screw assembly, which includes a screw, ball bearing pivot, and pusher pin, designed to securely attach to the hub assembly and suspension arm, allowing for the separation of the hub assembly from the suspension arm using a drive tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional removal methods are used on corroded and seized hub assemblies, then the tool structure remains simple, but the removal effectiveness deteriorates due to corrosion and seizing
Solution Approach 1:
The tool is divided into multiple functional components: a hub remover plate for positioning, a threaded insert for engagement, and a pusher screw assembly for applying force. This segmentation allows each component to address specific aspects of the removal problem, improving overall reliability while keeping individual components relatively simple.
Solution Approach 2:
The threaded insert acts as an intermediary element between the hub remover plate and the pusher screw assembly, providing a threaded engagement that allows the pusher screw to apply rotational force effectively to the hub assembly without direct contact between the plate and screw.
2Reliability
If force is applied to separate corroded hub assembly from suspension arm, then removal effectiveness improves, but the risk of damage to surrounding components increases
Solution Approach 1:
The hub remover plate features a precisely positioned opening that localizes the application of force to a specific area of the hub assembly. The pusher screw assembly applies force through a controlled threading mechanism that concentrates force where needed while distributing it appropriately across the engagement surfaces, reducing the risk of damage to surrounding components.
Solution Approach 2:
The tool is designed to engage with the hub assembly in a predetermined manner through the opening and threaded insert configuration, allowing force to be applied in a controlled sequence that prevents sudden or uncontrolled force application that could damage surrounding components.
3Force
If a threaded insert with pusher screw assembly is used, then the ability to overcome corrosion and seizing improves, but the device complexity increases
Solution Approach 1:
The threaded insert combines multiple functions into a single component: it provides threaded engagement with the pusher screw assembly, serves as a structural connector between the hub remover plate and the pusher mechanism, and creates the necessary force application interface. This merging reduces the number of separate components needed while maintaining effective force application capability.
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
Facilitates the efficient removal of hub and bearing assemblies from vehicle suspension arms by providing a secure attachment and rotational force to overcome corrosion and seizing issues.
Implementation Method 1
The pusher screw assembly may further include a ball bearing pivot and a pusher pin, where the ball bearing pivot is received within an axial bore at a first end of the screw
Data Source
AI summary
A tool for removing a hub assembly from a suspension arm of a vehicle may include a hub remover plate, an insert, and a pusher screw assembly. The hub remover plate may comprise a front surface, a rear surface opposite the front surface, an arcuate section extending between the front surface and the rear surface. The hub remover plate may also include a slot and an opening that extending through the hub remover plate. An insert may comprise a first portion that is configured to be received within the opening of the hub remover plate, a second portion that includes a shoulder that is configured to contact the rear surface of the hub remover plate, and a threaded axial bore extending through the insert. The pusher screw assembly may include a screw, where the screw is configured to be received in the threaded axial bore of the insert.