Messages

21

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: December 30, 2009, 10:30:08 PM »

Finished drilling all the holes in the side plates.


Finished tapping the last hole in the upper beam.


Turned some 4340 spuds to mount the cylinders to the beam.

22

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: December 30, 2009, 12:27:38 AM »

I got the cylinders assembled and tested.


Did a little bit more work to the lower beam.


More work on the upper beam.


Cylinder test fit.

23

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: December 28, 2009, 07:26:36 PM »

Today I started milling up the frame for the brake. I got the sides almost done and started on the upper and lower beams.



Upper beam


Lower beam

24

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: December 22, 2009, 09:48:53 PM »

Oh, you mean it's not staying in that building? Better be one helluva cherry picker!!

All of the pieces will be bolted together. There is no way I can move it around my home shop without doing it this way. The side plates are 880lbs. and the smaller ones are around 425lbs.

25

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: December 22, 2009, 09:31:15 PM »

Thats a BIG project.  How did you get that unloaded ?  My back hurts....

JH

Magnet and crane at work. When I get it home, tractor, cherry picker and straps.

26

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: December 18, 2009, 10:45:09 PM »

I got the caps welded on the barrels and milled out a slot then drilled a few bolt holes through. I also got the wrench flats milled on the rods.







I then went and picked up the flame cuts. I had a buddy that works at a steel place get and cut me out a bunch of 1.25" HR plate.

27

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: December 11, 2009, 09:04:31 PM »

I finally got some time after work tonight to work on the cylinders again. I got the ports welded on and the Id threaded. I also ordered 2650 pounds of steel for the frame. I should have it next week.

28

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: November 26, 2009, 12:10:10 AM »

Very interesting build.

Is it a down stroking machine? I have done them with PLC controls and it gets quite tricky to synchronize Y1 and Y2 in real time. It will also be interesting to see how you handle the tooling and program libraries in Mach.

Regards

KTM

Yes, down stroking machine. The upper die holder will be riding on Hiwin 35mm linear rails so don't need to worry about synchronization.

29

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: November 24, 2009, 11:00:04 PM »

Seems your off to a great start.    Very interesting project.  What gauge metal will you be able to bend at 48 inches long?  What radius will the bend be?

Brett

It will bend 48" of 3/16" steel. Radius is dependent upon lower die v opening. V width is usually 8 times metal thickness. So for 3/16" you use a 1.5" die opening. I think it will give you around a .234 radius.

30

Show"N"Tell ( Your Machines) / Re: My CNC pressbrake build

« on: November 24, 2009, 10:06:49 PM »

Beautiful parts, it will be great to see how the project comes along.  On your 6-jaw chuck, what do you call those pads on every other jaw that act at parallels?  That would be amazingly handy, I'm not sure how I've gotten by without that!!

Dustin

It's a 4 jaw and there are 4 bars bolted on the chuck then the blocks bolted on them. I have many different length blocks for any kind of setup. The bars are tapped all along the length so you can move them up or down. We just call them chuck stops.