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What would this be called (regarding stamped metal)?
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Registered User
Join Date: Sep 2000
Location: Irvine, CA
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Those small holes towards the left and right of the sheet of stamped metal are called what (the technical name)? What purpose do they serve? I'm assuming that they are not there as a linking mechanism, right? Perhaps some sort of structural feature?
Assume that these holes were found on a metal frame of an LCD monitor and not a washing machine as the image name implies.
Thanks.
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Posting Junkie
Join Date: Jun 2001
Location: Baltimore, MD
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That's where you put the shoelaces.
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Posting Junkie
Join Date: Jun 2001
Location: Baltimore, MD
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Alternatively... ventilation?
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Clinically Insane
Join Date: Jun 2001
Location: Chicago, Bang! Bang!
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Do you have a less shitty picture?
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Registered User
Join Date: Sep 2000
Location: Irvine, CA
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OK, this would apply to any piece of stamped metal so here is another picture of something else I found online.
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Administrator
Join Date: Jun 2000
Location: California
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Holes are stamped out for ventilation, to reduce weight & expense, and to allow model options. ie - same part used in 5 slightly different models. I don't know a technical name for the holes.
In the first pic, they're probably there for water bleedout - they're too small for effective ventilation. In the 2nd pic, they're probably for all the above reasons.
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Clinically Insane
Join Date: Jun 2001
Location: Chicago, Bang! Bang!
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I'm going to guess they're for pinning it down durning manufacturing, but I don't know for sure.
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Registered User
Join Date: Sep 2000
Location: Irvine, CA
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Thanks for the replies, but does anyone know the technical term for them? Some of them are not just holes, but can be beveled in such a way that it looks like a flat top volcano.
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Mac Elite
Join Date: Nov 2003
Location: The back of the room
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Some may be Cleko (klee-ko) holes. Pin devices would be inserted through aligned holes in multiple parts in several locations creating a ready to weld assembly.
Cleko - Wikipedia, the free encyclopedia
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Mac Elite
Join Date: Aug 2001
Location: Near Boulder, CO
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Typically when they are beveled it is to increase stiffness, they can be made individually with a dimple die or on a stamping machine.
Here is a company that sells individual dies targeted at the automotive sector
http://www.jmrmfg.com/tag/speed-hole/
They can be called speed holes or many other names, but it's essentially a beveled hole made on a punch press. Benefits are increased rigidity and reduced weight.
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Registered User
Join Date: Sep 2000
Location: Irvine, CA
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Thanks, I decided to use "protrusion holes" because they all protrude a little bit (in my instance).
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Posting Junkie
Join Date: Apr 2007
Location: Iowa, how long can this be? Does it really ruin the left column spacing?
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The correct term would be "dimple die-," "flare-," or "bellmouth-" hole.
"Bevel" is not the correct term if what you're referring to matches the above picture. Beveling involves adding a chamfer to the edge of a hole. A hole with a protrusion as you describe it is created by flaring sheet metal using an aforementioned dimple die.
Implementing flared holes into a sheet metal design saves weight due to the reduction in material while increasing stiffness due to the increase in cross sectional area.
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