Mill Transmission Assembly with Rubber Damping to Reduce Nail Damage

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Solution Overview

Problem

Existing mill transmission devices generate noise and vibration during operation, which can damage the nail surface when the grinding head contacts it.

Innovation Solution

A mill transmission device comprising a shaft tube, connecting shaft rod, spring, bearing assembly, and tubular chuck, with rubber rings and rollers to reduce vibration and noise, and a design that enhances stability during rotation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single shaft rod is used for transmission, then the structure is simple, but vibration and noise increase during operation

Engineering Contradiction:
Improvestructure simplicityVSAvoidvibration and noise
Core Design Contradiction:
Device complexityVSObject-generated harmful factors

Solution Approach 1:

The single shaft rod is divided into two separate shaft rods that rotate in opposite directions. This segmentation allows each shaft rod to carry its own balancing weight, counteracting vibrations and reducing noise while maintaining transmission functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Balancing weights are added to the shaft rods to counteract the vibrations generated during rotation. The counterweights offset the harmful vibrations and noise, allowing the simple shaft rod structure to operate smoothly without excessive vibration.

Inventive Principle:
Principle #8Anti-weight (Counterweight)

2Ease of operation

If the grinding head contacts the nail surface, then polishing function is achieved, but vibration and noise increase causing damage to the nail surface

Engineering Contradiction:
Improvepolishing functionVSAvoiddamage to nail surface
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The transmission system is segmented into two shaft rods rotating in opposite directions, with each shaft rod supporting part of the grinding head. This distribution reduces the vibration and noise transmitted to the nail surface during polishing, preventing damage while maintaining the polishing function.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shaft rods are designed to rotate in opposite directions with carefully controlled vibration characteristics. By managing the mechanical vibration through opposing rotation and balancing weights, the system achieves effective polishing while minimizing harmful vibrations that could damage the nail surface.

Inventive Principle:
Principle #18Mechanical vibration

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 effectively reduces vibration and noise, ensuring stability and minimizing damage to the nail surface during operation.

Implementation Method 1

an inner wall of the first connection port A is provided with a rubber ring A in an embedded manner, and an inner wall of the second connection port B is provided with a rubber ring B in an embedded manner

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the spring is sleeved on an outer side of the connecting shaft rod

Methodology Applied
Scientific EffectSpring: Spring

Implementation Method 3

an outer side of the shaft rod sleeve is sleeved with a roller A and a roller B respectively

Methodology Applied
Scientific EffectRoller: Roller

Data Source

PatentUS20250331621A1Mill transmission device
Publication Date: 2025.10.30 WANG ZHIBING
  • US20250331621A1 patent drawing
  • US20250331621A1 patent drawing
  • US20250331621A1 patent drawing

AI summary

The present disclosure relates to the technical field of mills, and discloses a mill transmission device. In the mill transmission device, an output end of a motor is provided with a cross column that is the same as that at a top of a connecting shaft rod, and the cross column at the output end of the motor is inserted into a first connection port A, which drives a shaft tube to rotate. A rubber ring A embedded in the first connection port A is capable of reducing vibration and noise caused by rotation. Similarly, the shaft tube is detachably connected to the connecting shaft rod through a second connection port B and a rubber ring B, and the rubber ring B is also capable of reducing the noise and vibration caused by rotation of the shaft tube.