Spinning Forming Plate With Ring-Shaped Projection
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Solution Overview
Problem
When heating the peripheral portion of a plate during spinning forming, the reduced heat conduction distance leads to increased temperature and decreased stiffness, causing deformation, which can result in contact issues between the plate and the heater.
Innovation Solution
A spinning forming method that incorporates a ring-shaped projection on the plate's peripheral portion to increase heat capacity, allowing localized heating while pressing a processing tool against the transform target portion, thereby preventing excessive temperature and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the plate is locally heated near the peripheral portion, then the transform target portion can be heated effectively, but the peripheral portion temperature increases and stiffness decreases causing deformation
Solution Approach 1:
The invention applies local quality by adding a ring-shaped projection specifically at the peripheral portion of the plate. This projection increases the local heat capacity and thermal mass at the peripheral region, allowing it to absorb heat without excessive temperature rise. The projection acts as a thermal buffer that maintains structural integrity while enabling effective heating of the transform target portion nearby.
Solution Approach 2:
The ring-shaped projection is prepared in advance on the plate before the spinning forming process begins. This preliminary structural modification ensures that the peripheral portion has sufficient heat capacity to withstand the heating process without deforming, preventing the stiffness reduction problem before it occurs during the actual heating and forming operation.
2Manufacturing precision
If the peripheral portion is heated, then forming can be performed near the outer peripheral surface, but the reduced heat conduction distance causes excessive temperature and deformation
Solution Approach 1:
The ring-shaped projection provides localized thermal management at the peripheral portion, creating a region with enhanced heat capacity. This allows the heating process to proceed with sufficient temperature control, enabling precise forming operations near the outer peripheral surface without the peripheral portion overheating or deforming due to the short heat conduction distance.
3Stability of the object's composition
If a ring-shaped projection is added to increase heat capacity, then peripheral portion deformation is suppressed, but the device complexity increases
Solution Approach 1:
Instead of modifying the entire plate structure, the invention uses a localized ring-shaped projection only at the peripheral portion where thermal management is needed. This minimal structural addition provides the necessary heat capacity and stability while maintaining simplicity in the rest of the plate design, thus balancing structural stability with device complexity.
Solution Approach 2:
The plate structure is segmented into two functional parts: the main plate body for forming operations and the ring-shaped projection for thermal management. This segmentation allows each part to perform its specific function efficiently, with the projection providing thermal stability without complicating the overall plate design or forming process.
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 method effectively suppresses deformation of the peripheral portion, enabling precise forming near the outer peripheral surface with increased stiffness, ensuring accurate shaping and reducing material costs by using a projection that can be either integrally provided or separately joined.
Implementation Method 1
For example, the transform target portion of the plate may be heated by induction heating
Implementation Method 2
a portion of the plate which is pressed against the mandrel by a spatula (processing tool) is heated by high frequency induction heating
Implementation Method 3
a release margin (conduction distance) of heat released from the heated position toward an outer side in a radial direction decreases
Data Source
AI summary
In a spinning forming method, a plate including a peripheral portion at which a ring-shaped projection is provided is used, the projection projecting in a thickness direction of the plate. Further, while rotating the plate, a transform target portion of the plate is locally heated, and a processing tool is pressed against the transform target portion to transform the plate. According to this configuration, a heat capacity of the peripheral portion of the plate can be increased. With this, when heating the vicinity of the peripheral portion of the plate, the peripheral portion can be prevented from becoming high in temperature. As a result, deformation of the peripheral portion of the plate can be suppressed.