Wheel Polishing Apparatus for Automated Back Cavity Contour Following

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Solution Overview

Problem

Conventional deburring methods for vehicle hubs are inefficient in polishing the back cavity of wheels, leading to suboptimal coating quality and requiring labor-intensive manual polishing, which poses health hazards due to dust generation.

Innovation Solution

A wheel polishing apparatus comprising a frame, servo electric cylinders, guide rails, motors, and a polishing head that allows for automated polishing by rotating the wheel and moving the polishing head along the cavity's contour, ensuring constant contact and efficient polishing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual polishing is used to ensure coating quality, then coating quality is improved, but labor intensity increases and dust hazards are generated

Engineering Contradiction:
Improvecoating qualityVSAvoiddust hazards
Core Design Contradiction:
Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The patent replaces manual mechanical polishing with an automated polishing head that moves along guide rails. The polishing head is driven by a servo motor and controlled by a PLC system, eliminating manual labor and associated dust hazards while maintaining polishing quality through automated control.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The polishing system is self-controlled through automated programming and PLC control. The polishing head automatically follows the contour of the wheel back cavity using guide rails and maintains constant contact pressure through spring mechanisms, enabling the system to perform polishing without human intervention.

Inventive Principle:
Principle #25Self-service

2Device complexity

If conventional deburring machines are used, then equipment simplicity is maintained, but polishing effectiveness deteriorates due to back cavity configuration

Engineering Contradiction:
Improveequipment simplicityVSAvoidpolishing effectiveness
Core Design Contradiction:
Device complexityVSManufacturing precision

Solution Approach 1:

The polishing head is designed to be movable along the guide rails rather than fixed, allowing it to dynamically adapt to the complex contour of the wheel back cavity. The spring-loaded mechanism provides constant contact pressure while accommodating variations in the cavity shape, improving polishing effectiveness without requiring overly complex equipment.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent introduces a multi-axis movement system where the polishing head can move horizontally along guide rails and vertically adjust its position. This multi-dimensional movement capability allows the polishing head to access and polish all surfaces of the back cavity, including hard-to-reach areas, thereby improving polishing effectiveness.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If automated polishing is implemented, then productivity is improved and labor intensity is reduced, but device complexity increases

Engineering Contradiction:
Improvepolishing efficiencyVSAvoidapparatus complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The automated polishing system is divided into modular components: a polishing head unit, guide rail system, servo motor, and PLC control system. Each component performs a specific function and can be independently adjusted or maintained, reducing overall system complexity while enabling automated operation and improving productivity.

Inventive Principle:
Principle #1Segmentation

4Area of stationary object

If the polishing head follows the contour line of the back cavity, then polishing coverage is improved, but mechanism complexity increases

Engineering Contradiction:
Improvepolishing coverageVSAvoidmechanism complexity
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The guide rail acts as an intermediary between the simple linear motion of the servo motor and the complex contour of the back cavity. The guide rail translates the linear motion into contour-following movement, allowing the polishing head to cover the entire back cavity surface without requiring a complex programmed motion system.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9724796B2Wheel polishing apparatus
Publication Date: 2017.08.08 CITIC DICASTAL CO LTD
  • US9724796B2 patent drawing
  • US9724796B2 patent drawing
  • US9724796B2 patent drawing

AI summary

The present invention relates to a wheel polishing apparatus composed of a frame, motors, servo electric cylinders, a polishing head, guide rails and the like. A wheel is fixed onto the clamp on the platform, a motor I rotates the platform and the wheel via the main shaft, a motor II rotates the polishing head via the drive shaft; the canting servo electric cylinder can realize the relative movement of the polishing head along the contour line of the back cavity of the wheel via the canting guide rail, the horizontal servo electric cylinder can realize constant contact between the polishing head and the back cavity of the wheel via the horizontal guide rail. The invention can realize the function of automatically polishing the back cavity of the wheel, which has desirable effects and advanced process and high degree of automation, and is characterized by simple construction and low cost.