Messages

1

General Mach Discussion / Re: Running 4th axis independently from xyz

« on: October 20, 2007, 05:37:02 AM »

Hi Chip

The motors are DCNC -57-610-01 (1Nm) and the ball screw size are x axis  880 mm  y axis 800mm.
I do not know about the timer and the board.

The information I have on the board is:

2.1 Amp bipolar chopper driver
Step direction type controller
0.4 A up to 2.1amp/phase max bipolar
up to 44v motor voltage
logic TTL compatible 5v
Two different chopper methods
motor current & chopper frequency easily set with trim pots

Hi Chad
Thanks for the link.

For all you not in the know England has a rugby match tonight. It probably is not a big deal in the wide world but it seems to matter big time in the UK.

Tom


Tom

2

General Mach Discussion / Re: Running 4th axis independently from xyz

« on: October 18, 2007, 05:05:48 PM »

Thank you vmax549  and chip for your encouraging posts.

I am from England so phone call is out, but thanks all the same.

As I have no experience in electronic  I do have problem to understand unless descriptions are thourough and clear.
This evening  I spent reading up about switches and LM555 and I believe I should be able to obtain these within a few days.
I did not build the electronics on my cnc unit but bought a plug and play unit with motors readyl wired, hence I am uncertain about wiring the connections.

I have made a diagram which I hope I will be able to attach. It shows the existing wiring between the z axis motor and the controller.
Would it be possible to indicate which wires goes to which terminals.

Again many thanks Tom

 

3

General Mach Discussion / Re: Running 4th axis independently from xyz

« on: October 17, 2007, 04:58:04 PM »

Thanks for your comments.
If it was possible to run the turntable with a stepper motor I could use it as if it was a lathe but could also use it for indexing. At present I would have to remove the motor and turntable to fit a rotary table for indexing which would be avoided if there was a way to use a stepper motor. But I guessed it would not be possible.

Tom

4

General Mach Discussion / Running 4th axis independently from xyz

« on: October 17, 2007, 05:05:25 AM »

Is there a way to run a fourth axis continuous and independently from xyz axis within the Mach environment?
At present I have a large motor running a slow turntable within the xyz envelope but I would like to
replace this with a smaller one and wondered if I could use a stepper motor.

Tom

5

G-Code, CAD, and CAM discussions / Re: Can one use a combination of G52 and G41

« on: July 04, 2007, 04:52:10 PM »

Hi Graham

Thank you very much for your clear guidance. I got it working perfectly.

6

G-Code, CAD, and CAM discussions / Can one use a combination of G52 and G41

« on: July 03, 2007, 05:17:34 PM »

I have just taken delivery of my router and need to learn G Coding quickly. I get an error in Mach3 when running g52 and G41 together. I have tried the cutter offset code on different lines without success. It works well if I only use G41 or only G52 but not together. I have placed an extract of the code below. Can someone put me in the right direction?

Tom

g90 g40
g52 g41p4 x36.235 y130
G1 ( code for lead in)