© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Die( 금형 ) for Sheet metal
• Single operation1. Stamping Die2. Press Machine
• Die is used for multiple station operation of shearing, bending and drawing.
1. Progressive Die2. Transfer Die
http://www.youtube.com/watch?v=q5Wlr6Co5SI&hl=ko
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Stamping Die ( 프레스 금형 )
• Automotive panel forming process: Drawing → Trimming → Hemming → Punching
• Draw die = upper die + lower die + blank holder
Lower die
Blank holder
Upper die
Draw diehttp://www.youtube.com/watch?v=ydoEJnwMlnk Press
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Press Machine ( 프레스 )
Crank press Hydraulic press
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Progressive Die ( 순차이송 금형 )
• Multiple operation such as punching, bending, blanking.
http://www.youtube.com/watch?v=BDIYBloDydM&hl=ko
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Part analysis (Unfolding) Strip layout
Punch Die set
Progressive Die Design
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Transfer Die ( 트렌스퍼 금형 )
• The large sheet metal part is transferred to next station after an operation by transfer machine.
http://www.youtube.com/watch?v=MTPQfEwxtf8&hl=ko
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Design Considerations ( 설계 )
• Guidelines for design issues of sheet-metal forming operations:
1. Punching2. Bending 3. Progressive-die operations4. Deep drawing
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
FEM
diede.es
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
Economics ( 경제성 )
• Cup-shaped part can be produced by deep drawing, spinning.
• Automotive or aircraft panel can be produced by drawing, stretch forming.
500 1,000 2,000 3,000 4,0001
Number of parts
Co
st p
er
pa
rt
Drawing
Spinning
© 2011 Su-Jin Kim GNU© 2011 Su-Jin Kim GNU
Sheet-Metal FormingSheet-Metal FormingManufacturing ProcessesManufacturing Processes
References
• 삼도프레스 : www.samdopress.co.kr 장비• AMADA: www.amada.co.kr 장비• IDETEC: www.dietec.co.kr 프래스금형