Motor-Driven Micrometer Ratchet for One-Handed Precision Measurement

Solution Overview

Problem

The difficulty in obtaining accurate and efficient micrometer measurements due to the need for an operator to hold and manually rotate the ratchet, which can affect speed and accuracy.

Innovation Solution

A device that allows for automatic micrometer adjustment using buttons instead of a rotary dial, featuring a motor-driven collet that rotates the ratchet, enabling one-handed operation and improved accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual rotation of the ratchet is used, then the operator can control the micrometer, but the operator must hold the object and rotate the ratchet simultaneously which reduces speed and accuracy

Engineering Contradiction:

Improveease of micrometer operationVSAvoidmeasurement speed

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent replaces the manual mechanical rotation system with an automated motor-driven system. A motor rotates a drive shaft that is coupled to the ratchet, eliminating the need for manual rotation. This substitution of mechanical manual operation with automated motor control directly resolves the contradiction by improving both ease of operation and measurement speed.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If manual rotation of the ratchet is used, then the operator can control the micrometer, but the operator must hold the object and rotate the ratchet simultaneously which reduces accuracy

Engineering Contradiction:

Improveease of micrometer operationVSAvoidmeasurement accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent replaces the manual mechanical rotation system with an automated motor-driven system. A motor rotates a drive shaft that is coupled to the ratchet, eliminating the need for manual rotation. This substitution of mechanical manual operation with automated motor control directly resolves the contradiction by improving both ease of operation and measurement speed.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If a rotary dial is used for adjustment, then the micrometer can be controlled, but it is located at the distal end which makes it difficult to operate while holding the object

Engineering Contradiction:

Improveoperational flexibilityVSAvoidease of micrometer operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent extracts the control function from the distal rotary dial and relocates it to buttons positioned on the main body of the micrometer near the anvil. This extraction of the control mechanism from its traditional location allows operators to control the micrometer while holding the object, resolving the contradiction between operational flexibility and ease of operation.

Inventive Principle:

Principle #2Taking out (Extraction)

4Ease of operation

If manual operation is used, then the micrometer can be adjusted, but hand heat can affect the measurement accuracy

Engineering Contradiction:

Improveease of micrometer operationVSAvoidhand heat interference

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the manual mechanical rotation system with an automated motor-driven system. A motor rotates a drive shaft that is coupled to the ratchet, eliminating the need for manual rotation. This substitution of mechanical manual operation with automated motor control directly resolves the contradiction by improving both ease of operation and measurement speed.

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

Facilitates faster and more precise micrometer measurements by allowing operators to use buttons for control, reducing the impact of hand heat and improving overall measurement efficiency.

Implementation Method 1

The motor is coupled to the collet and rotates the collet to rotate the ratchet

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS12451761B2Micrometer driver system and method

Publication Date: 2025.10.21 MEDRANO RUBEN

AI summary

Devices and methods for driving a micrometer are provided. The device includes a body, a collet, a motor, and a controller. The body is configured to be coupled to a frame of the micrometer. The collet is configured to be coupled to a ratchet of the micrometer and to rotate the ratchet. The motor is coupled to the collet and rotates the collet to rotate the ratchet. The controller controls operation of the motor.