Linear Motor Housing Composite Design for Compact Propulsion

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Solution Overview

Problem

Conventional linear motor housings for intelligent conveyor systems are bulky and costly, making them unsuitable for space-constrained environments and limited budgets in laboratory testing settings.

Innovation Solution

A linear motor housing with reduced dimensions and lower material costs, constructed using a combination of stainless steel and extruded aluminum, featuring a rectangular top plate and side plates with electromagnetic and eddy current shielding, and coupling components for continuous propulsion and alignment, allowing for flexible and efficient transportation of carrier vehicles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If conventional linear motor housings are constructed entirely of rigid stainless steel materials, then strength and durability are improved, but the profile size becomes large and construction cost increases

Engineering Contradiction:

Improvehousing strengthVSAvoidhousing profile size

Core Design Contradiction:

StrengthVSVolume of moving object

Solution Approach 1:

The housing combines stainless steel top plate with aluminum side plates and mounting base, creating a composite structure that reduces overall volume and material cost while maintaining necessary strength through material complementarity - stainless steel provides surface durability and magnetic shielding, aluminum provides structural support with reduced weight and size

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

Different portions of the housing use different materials optimized for their specific functions: stainless steel for the top plate where surface finish and magnetic shielding are critical, aluminum for side plates and base where structural support is needed but full stainless steel strength is not required, achieving local optimization of both strength and size

Inventive Principle:

Principle #3Local quality

2Strength

If conventional linear motor housings are constructed entirely of rigid stainless steel materials, then strength and durability are improved, but construction cost increases

Engineering Contradiction:

Improvehousing strengthVSAvoidconstruction cost

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The design uses less expensive aluminum materials for portions of the housing where full stainless steel construction is not necessary, reducing overall construction cost while maintaining adequate strength and functionality through the composite structure

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Ease of operation

If the top plate surface roughness is reduced to facilitate carrier propulsion, then friction is reduced and propulsion efficiency is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improvepropulsion efficiencyVSAvoidsurface roughness control

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The surface roughness parameter is specifically controlled within the range of 0.2-0.4 μm, optimizing the balance between propulsion efficiency (reduced friction) and manufacturing feasibility, ensuring smooth carrier movement while maintaining practical manufacturability

Inventive Principle:

Principle #35Parameter changes

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 solution provides a compact, cost-effective transportation system that maintains rigidity and flexibility, reducing construction costs while ensuring efficient operation and alignment, suitable for space-limited environments.

Implementation Method 1

The linear motor housing may include electromagnetic shielding material applied to the rectangular top plate and the two side plates

Methodology Applied

Scientific EffectElectromagnetic shielding: Faraday Cage

Implementation Method 2

In another embodiment, eddy current shielding material is applied to the rectangular top plate

Methodology Applied

Scientific EffectEddy current damping: Eddy Current Damping

Data Source

PatentEP3488245B1Linear motor housing construction

Publication Date: 2022.10.12 SIEMENS HEALTHCARE DIAGNOSTICS INC

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AI summary

A system for transporting a carrier vehicle using linear motors comprising a linear motor housing shaped to hold one or more linear motors includes a rectangular top plate. A left side plate is connected adjacent to a first longitudinal edge of the rectangular top plate and a right side plate is connected adjacent to a second longitudinal edge of the rectangular top plate. The linear motor housing further includes a plurality of coupling components operable to couple the linear motor housing to one or more adjacent linear motor housings in a manner that facilitates continuous propulsion of the carrier vehicle across the rectangular top plate of the linear motor housing and rectangular top plates corresponding to the one or more adjacent linear motor housings.