Messages

141

General Mach Discussion / If I don't have a none integrated graphics board what happens?

« on: February 16, 2011, 05:51:08 PM »

As the title says, Is some weird Sh%t going to happen?
ray.

142

dspMC/IP Motion Controller / Re: Research For My upcoming Build

« on: February 16, 2011, 05:42:35 PM »

Hey Rufi, point me in the right direction I would love to talk to somebody, anybody Re: Fanuc especially with your first version.  Even Machmotion haven't done Fanuc.
Ray.

143

General Mach Discussion / Re: Spindle pulley setup?

« on: February 16, 2011, 05:27:18 PM »

If I tick the reverse in the box it does reverse, I just want to know if I have to go into the config, spindle pulleys screen every time to change it from #1 to #2?
Ray.

144

General Mach Discussion / Re: Spindle pulley setup?

« on: February 15, 2011, 10:43:02 PM »

I should say I'm using a VFD and DSPMC.

145

General Mach Discussion / Spindle pulley setup?

« on: February 15, 2011, 09:41:49 PM »

Bridgeport style mill with high/low with reverse back gear.
I set pulley#1 25-550rpm and ticked the reverse box,  set pulley #2 560-3800 If pulley#2 in selected in the config, spindle pulleys It says that way all the time as can be seen in settings screen.
When I change from high to low do I have to go into the config, spindle pulleys and change it to #1?
If I am in pulley #2 and in MDI I select s200m03 it doesn't change from #2 to #1 in settings screen, so if I change gear it still thinks it's #2 and goes backwards.
Ray.

146

General Mach Discussion / Re: .300" overshoot at 40"/min when using feed hold

« on: February 13, 2011, 11:47:23 PM »

So should it be allowed to restart after pressing program stop and make a B line to the look ahead point and run from there like nothing happened.
Ray.

147

General Mach Discussion / Re: Problems with axis accuracy - MachTurn

« on: February 13, 2011, 11:32:24 PM »

How do you measure .5 micron? And you said you are using a leadscrew..
Ray.

148

General Mach Discussion / Re: .300" overshoot at 40"/min when using feed hold

« on: February 12, 2011, 05:25:52 PM »

I understand what you are saying. I don't have a problem with this but I know my customers will. If you watch a really good CNC operator lets say on a lathe, he only uses the cycle start, feed hold and FRO. Imagine coming up to a shoulder, he would be using the cycle start and feed hold and may have the FRO set below max rapid, he needs to know that the will stop when he wants it to, not overrun. I am using a closed loop system and I'm not loosing postion when in rapid and I stop dead, I don't get a following error at 120"/min.
I did some more tests. Now, for some reason I can press program stop and then cycle start again (couldn't do that yesterday) and what happens is It must look at the look ahead blocks (lets say 100 blocks) restarts ignores all the blocks between the stop point and starts a 100 blocks ahead like nothing happened except the spindle turned off, and I don't loose postion.
I know It's not a big ticket item like Fanuc and that's why I am testing it, big price difference and I think it's great.
I have a milltronics with servos and encoders and a 386SX computer and stops on a dime in feed hold.
I am not knocking it, but I have never seen a control PC or otherwise stop like this.
Ray.

149

General Mach Discussion / Re: .300" overshoot at 40"/min when using feed hold

« on: February 11, 2011, 09:57:15 PM »

So if I move at 120"/min in jog and remove my finger from the jog botton it stops dead and I don't loose postion why would it loose position at 40"/min? I have a milltronics with a 386sx computer with servo's & analogue feedback that can stop dead in feed hold.
I think Mach3 is great value and has lots to offer but I need the closed loop system and don't want to loose pulses that's why I went with the DSPMC. I have high hopes for this system but you could not use it in an industrial application.
Is there any way I can use the program stop and then restart the program, i know I will not loose postion.
Imagine approaching your job at just 40"/min and pressing feed hold, at .300" overshoot the damage is done.
Ray.

150

General Mach Discussion / .300" overshoot at 40"/min when using feed hold

« on: February 11, 2011, 08:55:59 PM »

As the title says. Using DSPMC, bridgeport style mill, 30inch/lb servo motors with encoders and tach feedback.
Spoke with Rufi and he said the acc/dec was fixed and hopes to make it the same as Mach3, I'm lost for words...
I can jog at 120inch/min in rapid and stop on a dime. I can press the program stop in program and it stops instantly(it would be nice if I could restart, but it will not ) but in feed hold at 40"/min it overshoots  .300" before it stops and that's not a complex move with lots of data.
G01 f40. x-20.
I suck at integrating pc's to machine tools , but with over 30 years in the CNC machine tool business I know there is a problem, but with what?
I would love to get some feed back.
Ray.