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Chapter 7. Power Presses. Stamping. One example of a product produced on a power press. http://www.advproducts.com/image/stamping/2-600.jpg. http://en.wikipedia.org/wiki/Progressive_stamping_die. Gap-Frame Presses. Also called “C-frame” presses OBI – Open-back inclinable

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Chapter 7 l.jpg

Chapter 7

Power Presses


Stamping l.jpg
Stamping

One example of a product produced on a power press

http://www.advproducts.com/image/stamping/2-600.jpg



Gap frame presses l.jpg
Gap-Frame Presses

  • Also called “C-frame” presses

  • OBI – Open-back inclinable

  • OBS – Open-back stationary


Straight side presses l.jpg
Straight-Side Presses

  • Typically used for higher production volumes with higher precision required.

http://www.toolingsystemsgroup.com/ats/images/ATS_open.jpg


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Mechanical

Capacities to 6,000 tons

Force varies throughout the stroke

Limited/difficult overload protection

Hydraulic

50,000 + ton capacities

Large force available at the top of the stroke

Overload protection

Mechanical Vs. Hydraulic


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https://www.getransportation.com/general/locomotives/specsheets.asphttps://www.getransportation.com/general/locomotives/specsheets.asp


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50,000 tons?https://www.getransportation.com/general/locomotives/specsheets.asp

The Loewy 50,000 ton press during construction. One of eighteen columnar plates (circa 1954).


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Rigidityhttps://www.getransportation.com/general/locomotives/specsheets.asp


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Double Action Presshttps://www.getransportation.com/general/locomotives/specsheets.asp

Blankholder Slide

Draw Slide


Die cushions pressure pads l.jpg
Die Cushionshttps://www.getransportation.com/general/locomotives/specsheets.asp(pressure pads)

  • Pneumatic or Hydraulic

  • Apply pressure to flat blanks for drawing

  • Serve as liftout or knockout devices

http://www.daytondiecushions.com/Flash2.htm


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Other Press Typeshttps://www.getransportation.com/general/locomotives/specsheets.asp

  • Hydraulic Forming

  • Multiple-Slide

  • Turret Punch


Hydraulic forming machines and dies l.jpg
Hydraulic Forming Machines and Dieshttps://www.getransportation.com/general/locomotives/specsheets.asp

  • Pressures range between 5,000 and 45,000 psi


Multiple slide forming l.jpg
Multiple-Slide Forminghttps://www.getransportation.com/general/locomotives/specsheets.asp

http://www.franklinfastener.com/images/fourslide004.jpg


Turret punches l.jpg
Turret Puncheshttps://www.getransportation.com/general/locomotives/specsheets.asp

  • Punch/Laser Machine


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