Gear Drive Rotary Lamination for Iron Core Manufacturing

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Solution Overview

Problem

Conventional apparatuses for manufacturing iron cores for rotating electric machines face inefficiencies in transferring driving force due to belt tension and elongation, leading to prolonged setup times and inability to handle higher speeds or larger sizes effectively.

Innovation Solution

The apparatus employs a driving force transfer section formed by a plurality of gears between the servomotor and rotary lamination section, along with a rotary position establishment device using a pin and actuator to accurately set the rotary position, reducing setup time and enhancing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an endless cog belt is used to transfer driving force from the servomotor to the blanking die, then the driving force can be transferred, but the transfer is not efficient or prompt due to belt tension, elongation, and deterioration

Engineering Contradiction:

Improvedriving force transfer reliabilityVSAvoidtime to establish rotary position

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent removes the endless cog belt from the driving force transfer mechanism and replaces it with a direct connection between the servomotor and the blanking die. This extraction of the problematic belt component eliminates the issues of belt tension, elongation, and deterioration, enabling prompt and efficient driving force transfer while significantly reducing the time required to establish the rotary position.

Inventive Principle:

Principle #2Taking out (Extraction)

2Adaptability or versatility

If a belt-based driving force transfer system is used, then the blanking die can be rotated, but the system cannot respond to higher stamping speeds or larger iron core sizes

Engineering Contradiction:

Improveadaptability to higher speeds and larger sizesVSAvoidstamping process speed

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent replaces the belt-based mechanical transmission system with a direct drive mechanism where the servomotor is directly connected to the blanking die. This substitution eliminates the intermediate belt component that limited speed and size adaptability, enabling the system to respond effectively to higher stamping speeds and larger iron core sizes while improving overall productivity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Speed

If the driving force is transferred through a belt, then rotation is achieved, but the belt tension and elongation cause delayed establishment of rotary position

Engineering Contradiction:

Improverotary position establishment speedVSAvoidbelt tension strength

Core Design Contradiction:

SpeedVSStrength

Solution Approach 1:

The patent extracts and removes the belt from the driving force transfer path, replacing it with a direct mechanical connection. This eliminates the belt's inherent weaknesses regarding tension and elongation, allowing the rotary position to be established immediately and accurately without the delays caused by belt elasticity and tension variations.

Inventive Principle:

Principle #2Taking out (Extraction)

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 rapid and accurate establishment of the rotary position, allowing for higher processing speeds and larger iron core sizes by efficiently transferring driving force through gears, independent of belt-related issues.

Implementation Method 1

The driving force transfer section is formed by a plurality of gears arranged between the drive source and the rotary lamination section

Methodology Applied

Scientific EffectGear: Gear

Implementation Method 2

the rotary lamination section includes a rotary position establishment device configured to establish a rotary position of the rotary lamination section

Methodology Applied

Scientific EffectMechanical actuation: Mechanical Force

Data Source

PatentUS10536059B2Apparatus for manufacturing iron core for rotating electric machine

Publication Date: 2020.01.14 TOSHIBA IND PROD & SERVICES CORP

AI summary

The apparatus for manufacturing an iron core for a dynamo-electric machine according to an embodiment of the present invention is provided with a rotary layering part for layering while rotating an iron core material punched from an electromagnetic steel sheet, a drive source for generating a drive force for rotating the rotary layering part, and a drive force transmission part for transmitting the drive force generated by the drive source to the rotary layering part. The drive force transmission part is configured from a plurality of gears arranged between the drive source and the rotary layering part. The rotary layering part is provided with a rotation position establishing means for establishing the rotation position of the rotary layering part.