Adjustable Workholder for Complex Curved Surface Polishing

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Solution Overview

Problem

Conventional polishing mechanisms on robot arms struggle to polish workpieces with complex curved surfaces due to positioning limitations, failing to access all areas of the workpiece.

Innovation Solution

An adjustable workholder with a polishing member, elastic member, and adjusting sleeve allows for axial sliding and angular adjustment of the polishing member relative to the robot arm, enabling effective polishing of curved surfaces by overcoming seizure and minor positioning errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed polishing mechanism is used on a robot arm, then the structure is simple and easy to operate, but it cannot polish all areas of workpieces with complex curved surfaces due to positioning limitations

Engineering Contradiction:

Improvepolishing coverageVSAvoidworkholder structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The workholder transforms from a fixed structure to a dynamic adjustable structure. The polishing member can be adjusted axially along the center line and rotated around the center line, allowing the robot arm to polish complex curved surfaces by changing the position and angle of the polishing member during the polishing process

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The workholder is divided into multiple adjustable components including the polishing member, adjusting sleeve, and elastic member. This segmentation allows independent adjustment of each component to achieve optimal polishing position and angle for different workpiece geometries

Inventive Principle:

Principle #1Segmentation

2Reliability

If the polishing member is fixed relative to the robot arm, then the device complexity is low, but it cannot overcome positioning errors and seizure on curved surfaces

Engineering Contradiction:

Improvepolishing continuityVSAvoidadjusting mechanism

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The elastic member provides dynamic compliance to the polishing member, allowing it to automatically adjust to positioning errors and maintain continuous contact with the workpiece surface during polishing, preventing seizure and ensuring polishing continuity

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The workholder allows changing of geometric parameters (position and angle) of the polishing member relative to the robot arm. This parameter adjustment capability enables the system to adapt to positioning errors and maintain reliable polishing operation on complex surfaces

Inventive Principle:

Principle #35Parameter changes

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 solution ensures comprehensive polishing of workpieces with complex curved surfaces by allowing the polishing member to adjust its position and angle, improving polishing quality and accessibility.

Implementation Method 1

an elastic member 25... the elastic member 25 resists the polishing member 21

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS8715040B2Workholder

Publication Date: 2014.05.06 SHENZHENSHI YUZHAN PRECISION TECH CO LTD

AI summary

A workholder includes a connecting member, a polishing member mounted on the connecting member, an elastic member sleeved on the connecting member, and a fixing assembly for movably receiving the connecting member. An end of the elastic member resists the polishing member, and the other end of the elastic member resists the fixing assembly, such that the connecting member is moveable to adjust a position of the polishing member when polishing.