Swing Device for Grinding Machine Belt Wear

Solution Overview

Problem

Conventional grinding machines suffer from reduced efficiency due to debris accumulation and potential burning of objects caused by a fixed sanding belt portion, leading to frequent belt replacement.

Innovation Solution

A swing device that alternates the sanding belt's contact point with objects by using a movable member, limit switches, and micro switches to change the rotation direction of the sanding belt, ensuring the sanding portion does not constantly contact the objects, thereby preventing debris accumulation and extending the sanding belt's lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the sanding belt is kept stationary relative to the objects, then the grinding process is simple and stable, but debris accumulates on the grinding portion and reduces grinding efficiency

Engineering Contradiction:

Improvegrinding efficiencyVSAvoiddebris accumulation

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The sanding belt is transformed from a stationary configuration to a dynamic swinging configuration. The sanding belt unit is made movable through a swinging mechanism that allows it to oscillate between a first position and a second position, preventing debris accumulation by continuously changing the contact point between the sanding belt and the object being ground.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The sanding belt unit performs periodic swinging motion between two extreme positions. The oscillating mechanism causes the sanding belt to alternately contact different portions of the object, creating a periodic action that prevents localized debris accumulation and maintains grinding efficiency over time.

Inventive Principle:

Principle #19Periodic action

2Productivity

If the sanding belt rotates at high speed for effective polishing, then the polishing effectiveness is improved, but the objects could be burned due to high speed grinding at the fixed portion

Engineering Contradiction:

Improvepolishing effectivenessVSAvoidburning of objects

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The sanding belt unit is transformed from a stationary configuration to a dynamic swinging configuration. The sanding belt is made movable through a swinging mechanism that allows it to oscillate between a first position and a second position, preventing debris accumulation by continuously changing the contact point between the sanding belt and the object being ground.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The sanding belt unit performs periodic swinging motion between two extreme positions. The oscillating mechanism causes the sanding belt to alternately contact different portions of the object, creating a periodic action that prevents localized debris accumulation and maintains grinding efficiency over time.

Inventive Principle:

Principle #19Periodic action

3Device complexity

If the sanding belt remains at a fixed position for grinding, then the device structure is simple, but the sanding portion wears quickly and needs frequent replacement

Engineering Contradiction:

Improvedevice structureVSAvoidsanding belt lifespan

Core Design Contradiction:

Device complexityVSDuration of action of moving object

Solution Approach 1:

The sanding belt unit is transformed from a stationary configuration to a dynamic swinging configuration. The sanding belt is made movable through a swinging mechanism that allows it to oscillate between a first position and a second position, preventing debris accumulation by continuously changing the contact point between the sanding belt and the object being ground.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The sanding belt unit performs periodic swinging motion between two extreme positions. The oscillating mechanism causes the sanding belt to alternately contact different portions of the object, creating a periodic action that prevents localized debris accumulation and maintains grinding efficiency over time.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS8197308B2Swing device for grinding machine

Publication Date: 2012.06.12 MAO SHAN MACHINERY INDAL

AI summary

A swing device for a grinding machine includes a motor located on a fixed table beside the sanding unit which includes a frame with two mandrels and a sanding belt is mounted to the two mandrels. A movable member is movably mounted to the shaft of the motor so as to move back and forth to activate two limit switches which are activated to stop the motor. The movable member is connected to a fixed plate connected to an end plate on the sanding unit and a link is connected between the fixed plate and an elongate slot of the movable member. The sanding unit together with the sanding belt swing when the movable member moves. The sanding belt swings and activates two micro switches to change the rotation direction of the shaft. The sanding belt swings to change the sanding portion contacting the objects to be polished.