Messages

201

General Mach Discussion / Adding buttons for Scripts

« on: November 03, 2012, 09:54:23 AM »

I've just added a laser cross hair to my router table.
The center of the cross image offset from the center of my spindle is -52.79mm in X and -0.375 in Y.

So I must add a Button and as assign a script to it.

Any guidance would be appreciated, I use the standard Mach3 screen and have not messed with it yet.

Thanks

George

202

General Mach Discussion / Re: Gear cutting. Shaper motion

« on: October 26, 2012, 02:02:08 PM »

Thanks for the reply.

I'll try it om aluminum first.

203

General Mach Discussion / Gear cutting. Shaper motion

« on: October 26, 2012, 07:49:33 AM »

Has anyone used their gantry with a 'fixed' preformed tool to cut gear wheels. Much like a shaper machine.
I have some involute gear cutters but they are far too big for my spindle. I thought I could afix a special shaped tool to my gantry and use back/forward (shaper) motion to cut my gear. The part would be rotated on my 4th axis at the required incremental degrees.

Thanks

George

204

General Mach Discussion / Re: Need help with my new 4th Axis

« on: October 11, 2012, 05:27:51 PM »

Thanks for the help Hood.

Having built my 4th axis I now have to find something to do with it 

The whole exercise has led me to revisit my setup. X,Y and Z are all set at 400 steps/per. No mistake it works fine and I have produced a lot of good work with it.

I'm confused because I see mention of setups with 1000 or 2000 in the Mach3 book, this is leading me to think I'm not getting the best from my machine.

I need to go back and check all my settings so I may have one or two more questions for you.

Cheers

George

205

General Mach Discussion / Re: Need help with my new 4th Axis

« on: October 11, 2012, 04:58:41 PM »

Yep, its fine, I did a quick test using the 'cut spline wizard' 
Now is there a requirement to put a 'home' switch on a rotary axis ? I could possibly use a mag sensor or an opto ?

George

ps. Played Carnoustie a wee while back... Greeeaat!

206

General Mach Discussion / Re: Need help with my new 4th Axis

« on: October 11, 2012, 04:30:23 PM »

Thanks Hood, works out at 200x10x6/360 =33.33333 steps per degree

George

207

General Mach Discussion / Re: Need help with my new 4th Axis

« on: October 10, 2012, 05:57:29 PM »

Yes please, any help at all would be great.

George

208

General Mach Discussion / Need help with my new 4th Axis

« on: October 10, 2012, 05:16:53 PM »

I've been using Mach3 for a few years now. I have a 3 axis router. I  decided to make myself a 4th Axis (A) (rotational) got a nice 4 inch 3 jaw chuck on it.
I have done the basic configuration by selecting ports and pins (I us the CNC4PC board)
It runs fine (CW & CCW) on my jog keys that I have set up but I don't know how to set it up yet. It has a 6:1 step down. Need some basic help please.

I do not have any limit or home switches on this new axis (not sure if I need them)


Thanks in advance....

George

209

General Mach Discussion / Re: High Speed Servo as Spindle - My Solution

« on: October 10, 2012, 05:03:30 PM »

Post moved to correct area.

Appologies

210

Modbus / Spindle Tacho Dro for CNC4PC

« on: April 22, 2012, 05:53:43 PM »

Using a CNC4PC i/o board and a Mitsibushi Fr-D720S inverter with a 400hz spindle motor,
Can anyone point me in the right direction if they have added a tacho to the chinese spindles to give an acurate readout of spindle RPM on a DRO.
Do I need modbus? smoothstepper? etc

Thanks

George.