Assembled Forming Die With Concave Side Surfaces

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Solution Overview

Problem

Conventional forming die apparatuses face issues with die deformation and accuracy due to high pressing forces, leading to potential damage and loss of precision when using super hard metal dies, and existing solutions struggle to maintain die surface accuracy and prevent displacement during thermal expansion.

Innovation Solution

The forming die apparatus is designed with multiple die members that have concave side surfaces facing each other, allowing for controlled deformation and absorption of outward forces, preventing damage to the frame and maintaining precision by assembling die members with specific surface configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If separate die members are assembled to form the die, then the die surface can be formed by joining cut surfaces with reduced tool wear, but the die members may deform and expand outward under pressing force, causing damage to the frame

Engineering Contradiction:

Improveease of die surface formationVSAvoidstructural integrity under pressing force

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The die is divided into multiple separate die members that can be manufactured independently and assembled together. This allows the die surface to be formed by joining cut surfaces, reducing tool wear and manufacturing difficulty while maintaining the ability to replace individual members if needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Concave portions are provided on the side surfaces of die members before assembly to anticipate and accommodate the outward expansion that occurs during pressing operations. This pre-built compensation space prevents the die members from striking and damaging the frame while absorbing the deformation energy.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Temperature

If die members are positioned on a base with clearances to allow thermal expansion, then thermal expansion can be absorbed, but it becomes difficult to maintain positioning accuracy and prevent displacement during pressing

Engineering Contradiction:

Improvethermal expansion accommodationVSAvoidpositioning accuracy of die members

Core Design Contradiction:

TemperatureVSManufacturing precision

Solution Approach 1:

The base is designed with differentiated regions: recessed portions that receive and securely hold the die members in precise positions, and clearance portions that allow thermal expansion. This local differentiation enables the die members to be firmly positioned for precision work while still accommodating thermal effects during operation.

Inventive Principle:

Principle #3Local quality

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 accurate positioning and deformation of die members without damaging the frame, ensuring high precision and preventing adverse forces during high-pressure operations, thus maintaining the accuracy and integrity of the die surfaces.

Implementation Method 1

Each die member has a concave side surface facing another die member... allowing for controlled deformation and absorption of outward forces

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS9227239B2Forming die apparatus and die member

Publication Date: 2016.01.05 TOYOTA BOSHOKU KK

AI summary

A forming die apparatus includes a first die on which a die surface is formed and a second die for pressing a workpiece placed on the first die. At least one of the first die and the second die is configured by assembling a plurality of die members. Each die member has a concave side surface facing another die member.