How to punch smaller holes than sheet thickness?

  • Thread starter Thread starter Tarun Tanwat
  • Start date Start date
  • Tags Tags
    Precision
AI Thread Summary
Punching 1mm holes in a 3mm thick sheet of SS 316 is generally not feasible due to the risk of the punch bending and breaking. Alternative methods include drilling with a cobalt HSS drill or a solid carbide drill for limited applications. Water jet and laser cutting are also viable options for creating smaller holes. Electrical discharge machining (EDM) can be used, with die-sinking EDM suitable for non-cylindrical holes and fast hole drilling EDM for cylindrical ones. Overall, traditional punching methods are not recommended for this thickness and hole size.
Tarun Tanwat
Messages
3
Reaction score
0
TL;DR Summary
How to punch smaller hole than sheet thickness in stainless steel.
Is it possible to punch 1mm holes in a sheet of SS 316 of thickness 3mm. I have a CNC punching machine but not sure if this would be possible.
 
Engineering news on Phys.org
Tarun Tanwat said:
TL;DR Summary: How to punch smaller hole than sheet thickness in stainless steel.
Is it possible to punch 1mm holes in a sheet of SS 316 of thickness 3mm.
Probably not. The hole would not be parallel.

The lowest tech solution would be to drill a few holes with a Cobalt HSS drill.
Second; is to use a solid carbide drill for one hundred holes.
Third would be a water jet, and fourth, a laser.
 
Reply
  • Like
Likes DeBangis21, DaveE and berkeman
EDM
 
Tarun Tanwat said:
TL;DR Summary: How to punch smaller hole than sheet thickness in stainless steel.

Is it possible to punch 1mm holes in a sheet of SS 316 of thickness 3mm.
No. There is a formula in Manufacturing Processes for Engineering Materials by Kalpakjian for estimating the force on a punch:

Punch.jpg


From the total force, and the cross sectional area of the punch, you can calculate the compressive stress on the punch. Even if the punch had sufficient compressive strength to punch the hole, it would most likely bend sideways and break.
 
Reply
  • Like
  • Informative
Likes Ranger Mike, DeBangis21, jack action and 1 other person

Thread 'A practical way to vaporize fuel for high MPG?'

Here's a video by “driving 4 answers” who seems to me to be well versed on the details of Internal Combustion engines. The video does cover something that's a bit shrouded in 'conspiracy theory', and he touches on that, but of course for phys.org, I'm only interested in the actual science involved. He analyzes the claim of achieving 100 mpg with a 427 cubic inch V8 1970 Ford Galaxy in 1977. Only the fuel supply system was modified. I was surprised that he feels the claim could have been...
View full post »

Thread 'Technical Analysis on Titan Sub (Titanic Sub)'

TL;DR Summary: Heard in the news about using sonar to locate the sub Hello : After the sinking of the ship near the Greek shores , carrying of alot of people , there was another accident that include 5 tourists and a submarine visiting the titanic , which went missing Some technical notes captured my attention, that there us few sonar devices are hearing sounds repeated every 30 seconds , but they are not able to locate the source Is it possible that the sound waves are reflecting from...
View full post »

Similar threads

How to level SS 304 sheet metal after perforation?
Replies
3
Views
1K
Shredder Cutting Area Calculation
Replies
2
Views
4K
Is a 2 ply cylinder as strong as a 1 ply twice the thickness?
Replies
33
Views
2K
How can I get my prototype made?
Replies
3
Views
1K
Pipe Design to pump sea water from the ocean to a boiler via intermediate tanks
Replies
4
Views
2K
Punching a hole in a tape moving at relativistic speed
Replies
26
Views
1K
Calculate the strength of several polycarbonate sheets laminated together
Replies
2
Views
1K
Automotive How to optimize an interference fit for a sheet metal ring
Replies
1
Views
2K
How Do You Calculate Pressure and Flow for an Air Float Conveyor?
Replies
3
Views
1K
Calculate the thickness of a plate to withstand a specified uniform pressure
Replies
3
Views
5K

Hot Threads

Recent Insights

Back
Top