Machsupport Forum

General CNC Chat => Show"N"Tell ( What you have made with your CNC machine.) => Topic started by: sandcrab on November 23, 2010, 11:24:40 PM

Title: Grid Plates
Post by: sandcrab on November 23, 2010, 11:24:40 PM

I'm over from Backyardmetalcasting so I made a pattern and poured a couple grid plates for the Series 1.

wood pattern
(http://i287.photobucket.com/albums/ll142/sandcrab_photo/Gridplatepattern.jpg)

One poured, one to go
(http://i287.photobucket.com/albums/ll142/sandcrab_photo/Gridplate1.jpg)

Raw casting
(http://i287.photobucket.com/albums/ll142/sandcrab_photo/Gridplatecasting.jpg)

It took 8 hrs to gnaw this out adjusting code and learning to program, but the last one took about an hour :).
(http://i287.photobucket.com/albums/ll142/sandcrab_photo/Gridplatemachining.jpg)

Title: Re: Grid Plates
Post by: Tweakie.CNC on November 24, 2010, 07:22:14 AM

Excellent work my friend.

The more we learn the faster we get  ;D

Tweakie.

Title: Re: Grid Plates
Post by: sandcrab on December 12, 2010, 08:14:18 PM

Thanks Tweakie,

The final machining on the gridplates after mounting them to the table. This is the limit of the X, Y travel,


(http://i287.photobucket.com/albums/ll142/sandcrab_photo/Gridplatesurfacing.jpg)


The next item is a rotary table. This is an Ebay find with a 5" 3 jaw Rohm chuck. It is servo driven, and since I am running the Campbell box with Geckos I figure the easiest/ cheapest way is to convert it to stepper.

(http://i287.photobucket.com/albums/ll142/sandcrab_photo/Rotary.jpg)

I haven't been able to sort out the NEMA numbers for the mount, it mics at 1.100" ctc, which I interpret to be NEMA 11, but in the dimensional drawings for various steppers the bolt centers are different.

This particular question may be in the wrong thread, so I'll look around and move it if necessary.

Title: Re: Grid Plates
Post by: N4NV on December 12, 2010, 10:32:27 PM

I'd keep the servo and get a Gecko servo drive.  I have 4 machines, 3 with servos and one with steppers.  I prefer the servos.

Vince

Title: Re: Grid Plates
Post by: sandcrab on December 13, 2010, 12:25:37 PM

N4NV, That would be a possibility. I looked at Geckos, and might be able to replace the fourth axis stepper Gecko with a servo Gecko. I need to determine the specs for the servo motor itself.

This unit has a proximity limit switch. I can see having it for orientation, but how is it disabled for spiral cuts that require multiple revolutions?