Apparnetly there are a couple styles of stripper plates, with thicker stock you can make L shaped guides that mount on the bottom plate that keep the sheet from lifting up with the punch, the other kind is like a spring loaded plate that holds the stock down.
@craigsmachineshop20404 жыл бұрын
Thanks, yeah I think I will be going with stripper springs on the guide posts and a stripper plate mounted to the top of the die.
@johnnyquick71282 жыл бұрын
As someone who grew up around a family owned machine shop, I enjoy videos like this. Don’t know how you can stand breathing that mist and smoke, but good video.
@craigsmachineshop20402 жыл бұрын
Thanks! Yeah, I finally got an air cleaner in the shop.
@mr.hermitsquid26947 ай бұрын
Great video! I learned a lot. I do not know much about machining, but I am trying to do a project similar for a museum, and am trying to learn. This was a good start, so thanks!
@LAWAUTO3 жыл бұрын
I have made a few punch/die sets. You might try using loner pins to hold the blocks parallel and shorter top plates to clear the pins sticking out. Also make pockets around the pins for some die springs to open the punch from the die. Mark the center to locate the press.
@craigsmachineshop20403 жыл бұрын
What are loner pins?
@LAWAUTO3 жыл бұрын
@@craigsmachineshop2040 You can use hardened shafting and cut them to the length you need to go through the two blocks. McMaster Carr has shafting and longer dowel pins.
@GregsGarage4 жыл бұрын
That seemed surprisingly straight forward. Well done.
@craigsmachineshop20404 жыл бұрын
Thanks, yeah it's turning out to be easier than I thought.
@tenacioustinkerer7661Күн бұрын
At 3:00 you’re testing hole fitment with a gauge pin; are you gradually upsizing that by changing the hole size in the gcode directly or are you using another type of command? Thank you!
@piccilos4 жыл бұрын
Really enjoyed watching you go thru and find the best way to make something efficiently
@craigsmachineshop20404 жыл бұрын
Thanks! I always enjoy finding a faster or less expensive way of doing things.
@Daniel-vq9zb4 жыл бұрын
Looks like it's going good Craig, for future projects it's a industry standard to have the press fit of your pins on the core side of the tool, generally you leave them sticking up above the core this adds some level of protection I case of drops or knocking the plate over.
@Ohmcrazy24 жыл бұрын
Cool. If you ever find yourself needing a bit more tonnage, it’s possible to reduce the tonnage required by adding a “rooftop” or inverted rooftop angle profile to the punch face. Of course it will tend to deform the part slightly which may be undesirable. Depends on how steep you make it. 1 or 2 degrees might be enough to help yet not deform the part. Just something to consider...
@craigsmachineshop20404 жыл бұрын
Thanks Daniel. Yeah, I should have tried that on this die. I'm kind of afraid to on the real die set in case the holes aren't accurate and I can't get the pins out. Lol. I was planning on attaching the pins to the base plate with screws from the bottom.
@craigsmachineshop20404 жыл бұрын
I was thinking about making the punch concave but that's a lot of 3D machining of tool steel. Any idea of percentage of tonnage saved?
@Daniel-vq9zb4 жыл бұрын
@@craigsmachineshop2040 it looks like you got pretty good alignment on this one, if you want to make this one into a press on the core side just take a ball bearing larger the the hole diamater, put it on the hole and hit it a couple times with a hammer, the pin will press right in
@craigsmachineshop20404 жыл бұрын
Tricks of the trade huh. :) I'll have to give it a try, thanks!
@farooqalikhan840011 ай бұрын
Good work
@brucegiroux4 жыл бұрын
You might try to build the relief at a taper instead of a step. The taper will strengthen the shearing face and eliminate the sharp stress riser in the step. Great work. I always enjoy watching others make money in a home garage/shed.
@craigsmachineshop20404 жыл бұрын
Thanks Bruce! How is that typically done, with a taper endmill?
@brucegiroux4 жыл бұрын
@@craigsmachineshop2040When machining the relief, set the part at an angle and use a conventional end mill. Another way and maybe much easier with a CNC is to step mill the taper in increments from the bottom side of the die cavity. Yet another method would involve a hand grinder. Years ago I used the above methods except I didn't have access to the CNC so I manually set different depths of cuts to form a rough tapper in the relief. I hope this gives you some ideas you can implement into your design if needed.
@craigsmachineshop20404 жыл бұрын
Thanks for thg he tips.
@tates112 жыл бұрын
For thinner parts just the punch could be made and Urethane used for the die. There is no need for any alignment. Here is a link to the method - kzfaq.info/get/bejne/mrVxicZ7lqmnnY0.html PRECISION THIN COMPLEX PARTS THE EASY WAY.
@davehammond97963 жыл бұрын
Flip the part over before punching to put burr's on the same side.
@craigsmachineshop20403 жыл бұрын
Thanks!
@KENTEKELLER3 жыл бұрын
What tool steel did you use? Also, what is the sound that your Harbor Freight press makes, and why are you not cranking it by hand?
@butterflyj68511 ай бұрын
Thanks Craig! Do you think a 20 ton hydraulic press will work doing this on 24 ga stainless steel?
@David-cd2ye4 жыл бұрын
Hi Craig Just wondering, about how much clearence you left between the die gravity and the punch part of the die Nice build great work
@craigsmachineshop20404 жыл бұрын
Thanks David. The overall clearance between the die and the punch was about .014, or about .007 from edge to edge. The punch was .375 thick and the die from face to cavity was .125. So I had an extra .250 to push the blank into the cavity.
@simon94479 ай бұрын
@@craigsmachineshop2040 hi Craig, Really great video! I do have a question. Could you not just do it in cad and laser cut it? I am probably oversimplifying it I imagine. Thanks again for the video. Regards, Simon.
@craigsmachineshop20409 ай бұрын
@@simon9447 Thanks! Laser-cutting machines are extremely expensive and the lead time for laser cutting is too long. Punching them is actually far faster and cheaper once you have the equipment.
@NuttyforNissan4 жыл бұрын
Congratulations works well.
@craigsmachineshop20404 жыл бұрын
Thanks!
@ganaag2462 Жыл бұрын
Hi, please advise me. I will stamp 4 mm copper sheet. I have 10 tons mannual jack. Is it can do stamp? or 20 tons jack?
@roylucas10274 жыл бұрын
Great job.
@craigsmachineshop20404 жыл бұрын
Thanks Roy!
@thaisonbui30192 жыл бұрын
What kind of steel do you use that can't cut iron without heat treatment ?
@gordon60294 жыл бұрын
Hey Craig I gotta ask. What are you planning on making with all these punch and dye sets?
@craigsmachineshop20404 жыл бұрын
I make specialty electrical covers.
@charleygrossnicklaus42783 жыл бұрын
awesome vide thank you for sharing
@johnkemas7344 Жыл бұрын
What type of steel did you use for the punch and die set? Did you have it properly tempered and to what Rockwell hardness?
@craigsmachineshop2040 Жыл бұрын
It was just a test set. It was mild steel unhardened. I do have the final die set now. I think it was D2 hardened. Not sure what Rockwell. I made the overall die set and outsourced the hardened parts.
@sriramreigns76484 жыл бұрын
Excellent sir.. But when you finished blanking why u have pireced one hole at centre of blank 🤔
@craigsmachineshop20404 жыл бұрын
It's a screw hole.
@leeackerson25794 жыл бұрын
Craig, you didn't mention hardening the die set. What steel did you use that will allow you to punch 16ga steel without much wear?
@craigsmachineshop20404 жыл бұрын
It was just a test die set. I used cold-rolled steel and didn't harden it. Cut pretty well though huh. I will be making the final dies out of A2 and farm out the hardening and tempering. They will be used in production.
@jaishetty85864 жыл бұрын
Have you considered tapering the punch by 1 degree or so ? that reduces the pressure as one side attacks the material slightly earlier, like a scissor action ? Keen to know your thoughts..
@craigsmachineshop20404 жыл бұрын
I was trying to figure how to do it but I recently realized that I can machine it and then just put some precision shims under the parallels. I will give it a try. What do you think?
@matthewpage96172 жыл бұрын
Craig do you have any other videos on the hole punch or other tools you have on the other presses
@@craigsmachineshop2040 hi Craig nicely done, where are you based,whats your whatsapp number
@craigsmachineshop20404 жыл бұрын
@@aswellmakando1724 Thanks, Phoenix Arizona. What is WhatsApp
@aswellmakando17244 жыл бұрын
@@craigsmachineshop2040 WhatsApp is an app on the phone it's one of cheapest communication system u can download it from play store on your
@hansbeamer57253 жыл бұрын
Hi Craig. Great videos n how much did you get your cnc for.
@craigedinger96293 жыл бұрын
Thanks, about $9K with shipping
@hansbeamer57253 жыл бұрын
Thanks for the reply. I really appreciate your time . Do they ship to West Africa.
@craigedinger96293 жыл бұрын
@@hansbeamer5725 Not sure, check with Tormach
@hamzabh86864 жыл бұрын
Great !!, can a converted mill reach the same quality as your torchmach ?
@craigsmachineshop20404 жыл бұрын
Thanks! Sam at CNC4XR7 has converted a Precision Mathews and he does really well with it.
@uphillwish3 жыл бұрын
Wonder where to buy this die set?
@kursorlinde4 жыл бұрын
magnificent
@craigsmachineshop20404 жыл бұрын
Thanks!
@dawotrade43422 жыл бұрын
good
@kanataltay68663 жыл бұрын
super
@MrUtubeobia2 жыл бұрын
How do you know what tonnage press you will need?
@craigsmachineshop20402 жыл бұрын
Unipunch has a calculator. www.unipunch.com/support/calculators/tonnage-calculator/
@jakeprosser-WATER-HEATERS4 жыл бұрын
That has to be aluminum, for the milling bit to carve it?
@kkknotcool4 жыл бұрын
Aluminum would be too soft.
@kkknotcool4 жыл бұрын
Most tool and die are milled and tool steel which is heat treated after milling, then ground.
@craigsmachineshop20404 жыл бұрын
No, carbide endmills will cut steel, stainless steel, tool steel...
@kkknotcool4 жыл бұрын
@@craigsmachineshop2040 soft carbide alloys.
@kkknotcool4 жыл бұрын
@@craigsmachineshop2040 soft carbide alloys.
@1233felix3 жыл бұрын
What is the capacity of your press ?
@craigsmachineshop20403 жыл бұрын
20 ton
@1233felix3 жыл бұрын
@@craigsmachineshop2040 thanks
@aquilagoneca21624 жыл бұрын
what material is that?
@craigsmachineshop20404 жыл бұрын
1018 Cold Rolled Steel
@aquilagoneca21624 жыл бұрын
@@craigsmachineshop2040 thank you Sir much appreciated 👍
@ypthechampion32072 жыл бұрын
Hi Craig , can you make me a punching set for something i do in aluminum sheet? any email or cell number where i can send you the measure, pictures , all information of what I need? Thanks you much.
@craigsmachineshop20402 жыл бұрын
Sorry, I only make tooling for in-house use.
@sounshimlapuri3 жыл бұрын
How remove scrap , pin very lose, make auto matic tool
@craigsmachineshop20403 жыл бұрын
Yeah, one of these days I will get back to making it.