Topics

1

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

« on: November 24, 2009, 09:54:16 PM »

I have been planning this for a long time. I just have not had the time or money to start on the project. I have changed my mind on the design many times. I think I finally have it down the way I want. for the most part it is going to look like any other C-frame style brakes with a few improvements.

Specs:

48" wide
58 tons
6" inches of ram travel
2 axis servo backgage
Mach 3 control with a Dynomotion motion controller for the  control of the +-10V analog Parker Proportional valve.
5hp, 2.5GPM pump.

I will be building the entire thing including the cylinders. ( That's what I do for a living.)

I am going to start of with building the 2 cylinders first. The cylinder are 5" bore, 3" rod, and 6" stroke.

Pile of Parts



Rough machining of the base heads. I will finish machine them after I weld them to the barrel.


Pistons are next.


Checking the threads with a Go gauge.



Rod heads next.



Piston rods next




Weld prep on the barrel.

 

2

General Mach Discussion / Z stalling issues.

« on: May 03, 2009, 11:18:10 PM »

I have a cnc plasma table running a CandCnc mp1000c THC, Mach3 2.63 and I am having problems with the Z stalling. After the first cut it lifts up and rapids to the next spot fine but on the second cut on a part the Z stalls when it tries to lift up before it rapids to the next cut. It only happens when the torch has been on. I can dry run everything with the torch off and it does not stall. I normally run the Z at 75ipm for velocity and 15 for accel. The problem goes away if I lower the Velocity to 30 and accel to 1. Version 2.63 makes my computer freeze a lot so I loaded 3.042.020 and the freezing goes away but no mater what velocity and accel I try the Z still stalls so I went back to 2.63 and just deal with the computer freezing all the time. Any Ideas?

Ryan