Segmented Linear Motor Drive for Parallelism Adjustment

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Solution Overview

Problem

Existing driving simulation test apparatuses face challenges in achieving accurate parallelism adjustment between linear motors and linear movement guides, leading to difficulties in ensuring high acceleration and deceleration performance due to accumulated errors in the alignment of multiple elements.

Innovation Solution

The apparatus employs a translational mechanism with linear motors and guides aligned on multiple bases, allowing for concentrated placement of drive and guide portions on each base, facilitating parallelism adjustment and reducing error accumulation, using coreless linear motors and symmetric wiring duct arrangements to enhance performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If a linear motor drive system with multiple linear motors and linear movement guides is used to improve acceleration and deceleration performance, then the acceleration and deceleration performance is improved, but the difficulty of parallelism adjustment increases due to accumulated errors across multiple elements

Engineering Contradiction:

Improveacceleration and deceleration performanceVSAvoidparallelism adjustment difficulty

Core Design Contradiction:

SpeedVSEase of operation

Solution Approach 1:

The translation drive mechanism is divided into multiple independent translation drive units, each comprising a linear motor and its corresponding linear movement guide. Each unit can be adjusted independently for parallelism, and the accumulation of errors across multiple units is minimized by allowing individual adjustment of each unit's parallelism.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A translation guide mechanism is introduced as an intermediary between the linear motors and the movable body. This guide mechanism includes multiple linear movement guides that work in conjunction with the linear motors to provide both guidance and a reference for parallelism adjustment, facilitating easier alignment.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Speed

If multiple linear motors and linear movement guides are arranged to achieve high acceleration and deceleration, then the acceleration and deceleration performance is improved, but error accumulation occurs in the alignment of multiple elements

Engineering Contradiction:

Improveacceleration and deceleration performanceVSAvoidalignment precision

Core Design Contradiction:

SpeedVSManufacturing precision

Solution Approach 1:

The system is segmented into multiple independent translation drive units, each with its own linear motor and linear movement guide. This segmentation allows for localized adjustment and reduces the propagation of alignment errors across the entire system, as each unit can be calibrated independently.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system incorporates feedback mechanisms through the translation guide mechanism that provides reference alignment information. This feedback allows for real-time monitoring and adjustment of parallelism, compensating for manufacturing tolerances and reducing accumulated errors.

Inventive Principle:

Principle #23Feedback

3Ease of operation

If the structure is simplified by using fewer adjustment steps, then the ease of operation is improved, but the acceleration and deceleration performance may be compromised

Engineering Contradiction:

Improveadjustment simplicityVSAvoidacceleration and deceleration performance

Core Design Contradiction:

Ease of operationVSSpeed

Solution Approach 1:

By segmenting the drive system into independent units with standardized interfaces, the adjustment process is simplified while maintaining the capability for high performance. Each unit can be adjusted independently using the same procedure, reducing complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The translation drive units are designed with universal characteristics, where each unit serves multiple functions: providing drive force through the linear motor, guiding movement through the linear movement guide, and serving as an independent adjustment element for parallelism. This multi-functionality simplifies the overall system while maintaining performance.

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 configuration enables high acceleration and deceleration capabilities while ensuring precise parallelism, reducing feed resistance and thrust force variations, and simplifying the adjustment and maintenance of the translational mechanism.

Implementation Method 1

a first translational drive portion that includes one or more linear motors that extend along the first direction, and makes the movable body perform translational movement in the first direction

Methodology Applied

Scientific EffectLinear motor: Linear Motor

Data Source

PatentUS10515565B2Driving simulation test apparatus including a movable body capable of translational movement

Publication Date: 2019.12.24 TOSHIBA MASCH CO LTD

AI summary

A driving simulation test apparatus includes a movable body, a first translational drive portion that extends along a first direction, a first translational guide portion that extends along the first direction, and a plurality of first bases that extends along the first direction and is spaced from each other in a second direction. The first translational drive portion and the first translational guide portion are aligned in the second direction on each of the plurality of first bases, and the first translational drive portion includes a plurality of first translational drive portions arranged on each of the first bases.