Spinning Forming Device With Holding Rollers

Solution Overview

Problem

In spinning forming processes using a receiving jig to support the central portion of a plate, the peripheral portion often deforms, leading to inaccuracies due to lack of pressing, while using a mandrel results in minimal deformation but requires a mandrel, which is not always necessary.

Innovation Solution

A spinning forming device with a receiving jig supporting the central plate portion, a rotating shaft, a heater for induction heating, and holding rollers that sandwich the outside portion of the plate to prevent peripheral deformation, allowing the processing tool to press the target area while maintaining the plate's shape.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a receiving jig is used to support the central portion of the plate without a mandrel, then the plate can be processed without a mandrel and the transform target portion can float in the air for easier access, but the peripheral portion of the plate deforms due to lack of pressing support

Engineering Contradiction:

Improveaccess to transform target portionVSAvoidshape accuracy of peripheral portion

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The support function is segmented between the receiving jig (supporting central portion) and holding rollers (sandwiching peripheral portion). This segmentation allows the central area to be accessible for processing while the peripheral area is independently supported to prevent deformation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Holding rollers are introduced as intermediary elements that sandwich the peripheral portion of the plate. These rollers act as mediators between the processing system and the plate periphery, providing necessary support without interfering with the central processing operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Manufacturing precision

If a mandrel is used to press the plate, then the peripheral portion is supported and deformation is prevented, but the transform target portion cannot float in the air and access is restricted

Engineering Contradiction:

Improveshape accuracy of peripheral portionVSAvoidaccess to transform target portion

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The support function is segmented between the receiving jig (supporting central portion) and holding rollers (sandwiching peripheral portion). This segmentation allows the central area to be accessible for processing while the peripheral area is independently supported to prevent deformation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of using a mandrel that supports from the inside (central portion), the invention uses holding rollers that support from the outside (peripheral portion). This inverted approach to support placement achieves the opposite effect: it prevents peripheral deformation while allowing central access.

Inventive Principle:

Principle #13The other way round (Inversion)

3Ease of operation

If the peripheral portion of the plate is left unsupported, then the processing tool can freely access the transform target portion, but the peripheral portion deforms and contacts peripheral devices such as heaters

Engineering Contradiction:

Improveaccess to transform target portionVSAvoidstability of plate position

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

Holding rollers are introduced as intermediary elements that sandwich the peripheral portion of the plate. These rollers act as mediators between the processing system and the plate periphery, providing necessary support without interfering with the central processing operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The holding rollers apply preliminary support action to the peripheral portion before deformation can occur. By sandwiching the periphery throughout the process, the system prevents the harmful action of peripheral deformation and contact with peripheral devices.

Inventive Principle:

Principle #9Preliminary anti-action

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 effectively suppresses peripheral deformation of the plate during spinning forming, ensuring accurate shape formation without the need for a mandrel and maintaining stable plate rotation.

Implementation Method 1

a heater configured to locally heat a transform target portion of the plate by induction heating

Methodology Applied

Scientific EffectInduction heating: Induction Heating

Data Source

PatentEP3075463B1Spinning and shaping device and spinning and shaping method

Publication Date: 2020.09.09 KAWASAKI JUKOGYO KK

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Figure 2A~2B
Figure 3

AI summary

A spinning forming device includes: a receiving jig supporting a central portion of a plate to be formed; and a rotating shaft to which the receiving jig is attached. The spinning forming device also includes: a heater configured to locally heat a transform target portion of the plate by induction heating; and a processing tool configured to press the transform target portion to transform the plate. The spinning forming device further includes a pair of holding rollers configured to sandwich an outside portion of the plate, the outside portion being located outside the transform target portion.