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Messages - resonance

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1
Solved!
I had to activate (green tick) the Dir LowActive on the Spindle line in Motor Outputs.

On my TB6600 card I have this config:
Under Motor Output I have Spindle on Step Pin N. 16, Dir Pin N. 1, Dir LowActive on Green, Step Low Active on Red, Step Port on 1, Dir Port on 1.
Under Output Signals I have Output N.1 on Green, Port N. 1, Pin Number 14 Active Low on Red
Under Spindle Setup I have PWM Base Freq. at 500 and Min PWM at 0%.

This is with the Chinese 2W laser that sells for about 100 dollars on Ebay.

2
Hello to everyone!
I've got a 4 axis milling machine connected to the 6600 board, spindle is manually turned on, not connected to the board (I use the milling machine mostly for engraving brass pieces).
I've recently bought a 2W chinese laser, one of those that come with a small router, to engrave metal tags an similar things.
I've taken the laser off the original controller and thanks to a friend I've connected it to the relay and a 12V power brick.
I've found a way to turn it on with the relay and to change the "power" of it with PWM, now when I set it at S0 it turns off and S100 is 100% on.
I've modified a post processor for Aspire so that I can vary turn on and off the laser with S commands while moving the all the axis, including the Z one.

PROBLEM: when M3 is issued the steppers stop working, DRO's move but the steppers seem to be lacking power.

If I manually turn the "spindle" off (hitting F5) the steppers start working again.

Any clue?

Thanks!

3
General Mach Discussion / Hit hard with the turret on the spindle... Damn!
« on: February 04, 2016, 03:54:05 AM »
Thanks!


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4
General Mach Discussion / Hit hard with the turret on the spindle... Damn!
« on: February 04, 2016, 03:21:16 AM »
Thanks for the replies!
I was wondering: what are the improvements between versions .057 and .066?
I understand there are issues that I would gladly avoid but am I risking to loose new features when going back to .062?


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5
What is a reasonable alternative that is not too hard to learn?


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6
mc: that explains why I had this crash. And this is VERY annoying as today I read the manual, again, and the only procedure it's required after and E-Stop is the homing (which I always perform).
I paid for the software and I expect it to be SAFE. Every issue like this MUST be either solved or clearly stated in the manual. I spent about 250 euro to repair everything. More that the software itself!!!!

Not to mention all the other times the software crashed the lathe in the past!!!

Rich: I tried to call you today but skype for some reason doesn't want to work... I'll try later today.

Lathe is back, for now, I am not satisfied yet so I booked a complete overhaul of it, it's being modified to be a slant bed with linear bearings. Once completed it will finally rock. So far it's manageable but the spindle not being perfectly concentric and the carriage still bearing a lot of mechanical backlash make it a pain to obtain what you want.

Luckily most of the previous รจ issues are now solved.

French horn players... They wouldn't understand the difference between a mouthpiece and a tea spoon. :)

I'm on the dreadful German screen the German guys included with the lathe. Awful version, very complicated, password protected... A nightmare but I can make it work.
(I know how to bypass the password of any screen, by the way, too easy to be true...)

I'm running .066, I'd like to go to the .062 but so far, at least, the lathe is working (barely). I'm trying to get the .062 on the laptop so if it doesn't work I still have the big computer working.


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7
Hey guys, here's the problem: after setting up a quite complex trail of operations (center drilling, peck drilling, boring, chamfering, internal relief, threading, turning, parting) and having perfectly set all the tools' positions in the tool table I felt like I could finally turn the piece.
I did make one part and I was very satisfied but then I hit the E-Stop (stupid move, I literally sat on the jog shuttle...).
Anyway, I simply hit the reference button and the machine went to the limit switches as usual.
Now, being the limit switches VERY precise I normally don't need to make any further check and I can continue machining. This time I decided to see if all was right and I went with my master tool (number one) to the stock to check the Z and the X.
Something very strange happened: I was off by about 30mm on the Z and 45mm on the X!
I said: "you son of a...!!! You wanted to screw me!!! Not this time, I'm smarter than you!"
So I made a new facing cut to zero the Z and a light turning on the stock to zero the X.
Feeling satisfied for having dodged death I started the next part and then disaster!
As soon as I hit the start button Mach3 changed the DRO to some strange values and run full speed into the spindle!!!!
ER40 clamping nut is now thinner, the two bolts that keep the turret have been stripped, tool holder shattered, tool wheel lost its position, gibs need to be adjusted again and a puddle of tears to be moped from the floor...

4 hours later the lathe was back in business and I decided to investigate why this happened. So I set every tools' positions again in the tool table, I machined one part and then I hit the E-Stop on purpose to recreate the previous nightmare.
I click the reference button again and the machine goes to the limit switches. And then I see the same problem again: the position of the master tool is not right!
This time I decide not to reference X and Z with a facing and turning operation but I instead make an M6T0202 tool change and then an M6T0101. (I change from tool 1 to tool 2 then back to tool 1).

After this double tool change everything is correctly positioned.

Now the question is: why??????????????


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8
Mach Screens / Help with tool changer macro
« on: January 01, 2016, 08:21:13 AM »
Hello guys, I finally received my repaired lathe.
It's been a long wait but now it is finally, mechanically, ok.

Problem is the screenset or the macro pump provided by the company who made the conversion sucks: the first referencing doesn't work most of the times.
Sometimes it pushes the tool changer wheel out and not back in, sometimes it doesn't go towards the limit switches, sometimes it halts for no reason...
After a successful referencing sometimes it doesn't react to M6T0x0x tool change command. Sometimes it does it without loving to the tool change X/Z position.
Sometimes it looses some parameters...
It's a total mess and this German company who made the screen set and macro pump doesn't help.

I was wondering if any of you had something for a 2 axis lathe with the A axis for the tool changer. The lathe has limit switches, two servo motors and a stepper for the A axis.

Please help! :(


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9
General Mach Discussion / Rippled finish only when cutting arcs
« on: December 23, 2015, 10:31:35 AM »
Yeah, I suspected that. The lathe is now traveling towards my place, should be here before the 31st. Then I'll have the opportunity to play a bit the servo parameters.
Thanks!


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10
General Mach Discussion / Rippled finish only when cutting arcs
« on: December 23, 2015, 02:44:49 AM »
Here's a photo




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