Wheel Fastening Assembly With Thrust Bearing for Precise Robot Tracking
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Solution Overview
Problem
Wheeled mobile robots often experience imprecise movement due to unsecured wheels, leading to low productivity and potential damage.
Innovation Solution
A wheel fastening system comprising a chassis, motor, wheel, screw, and thrust bearing, where the screw secures the wheel to the motor shaft and the thrust bearing provides axial support, ensuring the wheel maintains its position and direction during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the wheel is not properly secured to the motor shaft, then the structure is simpler and easier to assemble, but the movement direction becomes imprecise and productivity decreases
Solution Approach 1:
The wheel fastening system is divided into separate functional components: a fastening mechanism (screw or clamp) for securing the wheel to the motor shaft, and a thrust bearing for axial support. This segmentation allows each component to perform its specific function effectively, ensuring precise movement direction while maintaining ease of assembly and disassembly.
Solution Approach 2:
The thrust bearing is pre-installed in the motor housing to provide axial support before the wheel is mounted. This preliminary action ensures that when the wheel is secured to the motor shaft, the axial forces are already supported, enabling precise movement from the start without requiring complex adjustment mechanisms.
2Stability of the object's composition
If the wheel is not properly secured, then assembly is faster and easier, but wheel position stability deteriorates leading to deviation during movement
Solution Approach 1:
The fastening system separates the wheel mounting function from the axial support function. The wheel can be quickly mounted using a simple fastening mechanism, while the thrust bearing independently handles axial position stability. This segmentation maintains ease of assembly while ensuring stable wheel position during operation.
Solution Approach 2:
The thrust bearing acts as an intermediary component between the wheel and the motor housing. It mediates the axial forces and maintains the wheel's axial position without interfering with the simplicity of the wheel fastening mechanism. This intermediary element ensures position stability while keeping the assembly process simple.
3Reliability
If basic wheel mounting is used without additional fastening components, then the device is simpler, but wheel security is insufficient causing potential damage
Solution Approach 1:
The reliability function is segmented into two independent subsystems: a fastening mechanism (screw or clamp) that secures the wheel radially to the motor shaft, and a thrust bearing that supports axial loads. This segmentation ensures wheel security through multiple independent mechanisms without creating a complex integrated system, as each component remains relatively simple and standardized.
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
The system stabilizes the wheel's position, preventing deviation and ensuring precise movement, thus enhancing productivity and preventing damage.
Implementation Method 1
The screw 4 passes through the hub 31 of the wheel 3 and is coupled to the shaft 21 of the motor 2 to secure the wheel 3 to the shaft 21
Implementation Method 2
The thrust bearing 5 is an interference fit between the wheel 3 and the side wall 121 of the cover 12 of the chassis 1. The thrust bearing 5 withstands axial loads applied to the wheel 3.
Data Source
AI summary
A wheel fastening system for a wheeled mobile robot includes a chassis, a motor, a wheel, and a thrust bearing. The motor is disposed in the chassis, and the motor turns a shaft connected to the wheel. The thrust bearing is an interference fit between the wheel and the chassis and provides axial support for the wheel to hold the position of the wheel. The wheeled mobile robot does not deviate from a chosen path during movement.