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2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
Introduction to Net-Shape Manufacturing
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
Introduction to Net-Shape Manufacturing
An example
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
Introduction to Net-Shape Manufacturing
Geometrical ParametersTool geometry
Workpiece geometry
Process ParametersDie and tool motion
TemperatureLubrication
Material
Material ParametersWorkhardening
Strain rate sensitivityAnisotropy
Temperature
INPUT
PROCESS MODELING
Process Analysis And Optimization
Loads, energies, stresses, strains, temperature,
metal flow (geometrical change)
Primary product Requirements
Forming limits
Secondary product requirements
Tolerance, surface property etc.
Equipment
Capacity limitations
CONSTRAINTS
OUTPUT
Determination of process
geometry and process
performance
condition
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
Analysis and control in Metal Forming
• Metal flow• Forging load• Forging energy
Flow stress/Forge ability
Frictionconditions and
coefficient
Data onbillet material
Ram velocity
Billet/forginggeometry
volume, thickness
Die temperature,cooling
Interface,lubrication
Strain rate
Contact timeunder pressure
TemperatureDistribution in
forging
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
Machined part geometry transfer
via IGES
Forging design
Finisher design
Blocker design
FEM simulation
Modificationneeded
CNC machinethe dies
Preliminary design
VerificationAlpid system
Alpid system
Expert system
CAD/CAM procedure of forging die design
2011-2 Net-Shape Manufacturing
사출성형 CAE S/W의 이용
경험과 직관에 의존
제품 DESIGN 설계, DRAWING
금형제작
시사출 금형수정
수정사항 선정
양산
O.K
-Delivery system-Cooling channel
layout
-사출조건
Yes
No
- 기존사출성형의 제품생산 Flow
Mechanical EngineeringYonsei University
2011-2 Net-Shape Manufacturing
- CAE가 적용된 사출성형의 제품생산 Flow제품 DESIGN 설계, DRAWING
CAE Simulation-Delivery system-사출조건-Cooling channel layout
금형제작
시사출
O.K
Simulationagain?
금형수정
수정사항 선정
-금형수정에 필요한 시간, 비용의 절감
-우수한 품질의 제품생산 가능
양 산Yes
Yes
No
No
Mechanical EngineeringYonsei University
2011-2 Net-Shape Manufacturing
Bonding and Packing
Schematic illustrations of IC packing
Chip-on-board attachment
Mechanical EngineeringYonsei University
2011-2 Net-Shape Manufacturing
Transfer-molding Press Schematic
Mechanical EngineeringYonsei University
2011-2 Net-Shape Manufacturing
Runner design
Mechanical EngineeringYonsei University
Parting Line
Primary Runner
Sect. A-A
Optimum Cross Section
Bottom Half of Mold
Sect. B-B
Top Half
Bottom Half
Gate
Primary Runner
L.F.
Secondary Runner
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University
2011-2 Net-Shape ManufacturingMechanical EngineeringYonsei University