Adaptive Hub Burr Removal via Parallel Robot Control

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Solution Overview

Problem

Conventional burr removal methods are inefficient and lack precision due to a fixed angle between the brush and the back cavity of aluminum alloy hubs, making it difficult to effectively remove burrs in the back cavity, which affects the attractiveness and corrosion resistance of the hubs.

Innovation Solution

A self-adaptive hub burr removing device comprising a workbench, columns, a brush, a spindle, a spindle box, a cross beam, a spindle motor, a controller, a clamp, a parallel robot, and displacement sensors that allow real-time adjustment of the hub's position and angle to maintain close contact between the brush and the hub's back cavity, ensuring effective burr removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a fixed angle between the brush and back cavity is used, then the device structure is simple, but the burr removing precision and efficiency are low

Engineering Contradiction:
Improveburr removing precisionVSAvoiddevice structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies dynamics by making the hub angle adjustable during the burr removing process. The parallel robot enables real-time posture adjustment of the hub, changing from a fixed angle configuration to a dynamic, adjustable angle system. This allows the brush to adapt to different back cavity shapes, improving burr removing precision while maintaining reasonable device complexity through automated control.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements parameter changes by allowing the hub angle to vary during operation. The parallel robot adjusts the hub's posture parameters in real-time based on the back cavity shape, transforming the rigid fixed-angle parameter into a flexible variable parameter. This enables adaptation to different geometric configurations while maintaining systematic control.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If a fixed angle between the brush and back cavity is used, then the device structure is simple, but the burr removing efficiency is low

Engineering Contradiction:
Improveburr removing efficiencyVSAvoiddevice structure complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The parallel robot introduces dynamic adjustment capability to the hub posture, enabling real-time angle changes during the burr removing process. This dynamic configuration allows the system to adapt to different back cavity geometries, significantly improving burr removing efficiency. The automation of the adjustment process maintains productivity gains without proportionally increasing operational complexity.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements feedback control through the displacement sensor that detects the hub surface position and provides real-time feedback to the controller. This closed-loop feedback system enables automatic posture adjustment of the hub, improving burr removing efficiency by ensuring optimal brush contact angles without requiring complex manual intervention.

Inventive Principle:
Principle #23Feedback

3Adaptability or versatility

If the brush angle is unadjustable, then the device operation is simple, but the adaptability to different back cavity shapes is poor

Engineering Contradiction:
Improveadaptability to back cavity shapeVSAvoidoperation simplicity
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system applies self-service through automatic posture adjustment. The displacement sensor continuously monitors the hub surface position and the parallel robot automatically adjusts the hub angle accordingly, eliminating the need for manual intervention. This self-adjusting mechanism enhances adaptability to different back cavity shapes while maintaining ease of operation through automated control.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The displacement sensor provides real-time feedback on the hub surface position, enabling the controller to automatically adjust the hub posture via the parallel robot. This feedback loop creates an adaptive system that responds to different back cavity geometries autonomously, improving versatility without complicating the operational interface.

Inventive Principle:
Principle #23Feedback

4Extent of automation

If real-time posture adjustment is implemented, then the automation level is high, but the device complexity increases

Engineering Contradiction:
Improveautomation levelVSAvoiddevice structure complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical adjustment with an automated parallel robot system controlled by a controller receiving input from displacement sensors. This substitution of manual operation with automated electromechanical control achieves high automation levels. The complexity is managed through the use of a standardized parallel robot mechanism and integrated control system, which automates complex motions through coordinated control rather than mechanically complex linkages.

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

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 device achieves high automation, efficiency, and precision in burr removal, suitable for large-batch production, with the displacement sensors providing real-time feedback for precise adjustments, ensuring the brush remains in contact with the hub's back cavity.

Implementation Method 1

More than three displacement sensors are arranged in the brush and are ultrasonic displacement sensors

Methodology Applied
Scientific EffectUltrasonic displacement sensing: Ultrasound

Implementation Method 2

The parallel robot is a Stewart parallel platform

Methodology Applied
Scientific EffectParallel mechanism motion control: Stewart Platform

Implementation Method 3

the brush is driven to rotate by the spindle motor... ensuring that the brush is always in close contact with back cavity of the aluminum alloy hub, thereby achieving a good burr removing effect

Methodology Applied
Scientific EffectMechanical abrasion: Abrasion

Data Source

PatentUS11383343B2Device for removing burrs from aluminum alloy hub
Publication Date: 2022.07.12 CITIC DICASTAL CO LTD
  • US11383343B2 patent drawing

AI summary

Disclosed is a device for removing burrs from an aluminum alloy hub. The device includes a workbench, columns, a brush, a spindle, a spindle box, a cross beam, a spindle motor, a controller, a parallel robot, and a displacement sensor. Columns are fixedly connected to the workbench, and the cross beam is connected to the columns and a position of the cross beam can be adjusted along the columns; the spindle box is connected to the cross beam, and moves horizontally on the cross beam; the spindle, the spindle motor and the controller are mounted on the spindle box, and the brush is mounted at the end of the spindle; the brush is driven to rotate by the spindle motor and controlled by the controller; and the displacement sensor is mounted in the brush. The parallel robot can implement precise adjustment, and can perform real-time posture adjustment according to the instruction of the controller to ensure that the brush is always in close contact with the back cavity of the hub.