Polishing Device Rotary Feedthrough Nozzle

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Solution Overview

Problem

Existing polishing devices require time-consuming movement of the polishing disc to a metering device for polishing agent application, limiting cycle time efficiency and suitability for industrial automation.

Innovation Solution

The polishing agent is supplied directly to the polishing disc through a rotary feedthrough application nozzle integrated within the support plate's central shaft, allowing computer-controlled, continuous application synchronized with the disc's movement, and optionally cooled with compressed air to minimize heat input.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the support plate with polishing disc moves to a stationary metering device for polishing agent application, then the polishing agent can be applied to the polishing disc, but the cycle time is increased due to the time-consuming movement

Engineering Contradiction:

Improvepolishing agent applicationVSAvoidcycle time

Core Design Contradiction:

Quantity of substanceVSLoss of time

Solution Approach 1:

Instead of moving the polishing disc to a stationary metering device, the invention inverts the approach by making the metering device move with the polishing disc. The application nozzle is integrated into the support plate and moves synchronously with the polishing disc, eliminating the need for relative movement between the disc and metering device.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The invention merges the metering device with the support plate by integrating the application nozzle directly into the support plate structure. This combination ensures that the metering device and polishing disc always maintain the same relative position, eliminating the time-consuming movement required in conventional systems.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If a large amount of polishing agent is applied to work into the polishing disc, then the polishing disc can be properly prepared, but the polishing agent usage increases and spattering occurs

Engineering Contradiction:

Improvepolishing disc preparationVSAvoidpolishing agent waste

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The invention applies polishing agent locally and precisely at the center of the polishing disc through the integrated application nozzle. The computer-controlled metering system delivers the exact amount of agent needed (0.2-5g) directly where it is required, avoiding excessive application and subsequent spattering while ensuring proper disc preparation.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The computer-controlled metering system monitors and adjusts the polishing agent application in real-time based on process parameters. This feedback control ensures optimal agent quantity is applied for proper disc preparation while minimizing waste and spattering.

Inventive Principle:

Principle #23Feedback

3Manufacturing precision

If the application nozzle is held in a rotary feedthrough that rotates with the support plate, then the nozzle remains in place relative to the polishing disc, but the device complexity increases

Engineering Contradiction:

Improvenozzle positioningVSAvoidrotary feedthrough mechanism

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The application nozzle is merged with the support plate structure, forming an integrated unit. This eliminates the need for separate rotary feedthrough mechanisms while maintaining precise relative positioning between the nozzle and polishing disc, as both move together as a single assembly.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The support plate serves multiple functions: it holds the polishing disc, provides structural support, and integrates the application nozzle for polishing agent delivery. This multi-functionality reduces the need for additional components like separate rotary feedthroughs, simplifying the overall device structure.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

This design significantly reduces polishing time, minimizes agent usage and spattering, enhances polishing results, and extends the service life of the polishing disc, facilitating automated and efficient surface finishing.

Implementation Method 1

the application nozzle is held in a rotary feedthrough, which may be designed as a freewheel, so that the application nozzle remains in place while the freewheel rotates with respect to the support plate and thus the polishing disc

Methodology Applied

Scientific EffectRotary feedthrough:

Implementation Method 2

optionally cooled with compressed air to minimize heat input

Methodology Applied

Scientific EffectCompressed air cooling: Cooling

Data Source

PatentUS12115620B2Polishing device

Publication Date: 2024.10.15 RUD STARCKE GMBH & CO KG

AI summary

A polishing device is held on a robot arm and has a support plate, a polishing disc held on the support plate, a drive moving the support plate in a plane, and a metering device for feeding a polishing agent to the working side of the polishing disc. An application nozzle of the metering device is guided through an open central axis of the support plate, the polishing disc having a central opening for allowing the passage of the polishing agent metered in computer-controlled manner.