Messages

1331

General Mach Discussion / Re: backlash and slaved axis

« on: March 31, 2015, 05:23:57 PM »

robert,
I am not aware of any answers to the questions you asked. IE; Never applied backlash to a slaved axis and don't remember ever seeing a post about it how it behaves when applied to two axes.

Suggest you try setting the backlash for each axis AND observe how it works.
If Y & A are different try it with different settings for each, or both the same, experiment....
Do this with low settings for the shuttle wheel setting and backlash speed.

RICH

1332

Tangent Corner / TURKEYS TAKING UP RESIDENCE

« on: March 31, 2015, 10:48:07 AM »

I live in a residential neighborhood. SO I go outside to take out the garbage cans. Typical Monday morning!
To my supprise these gal's have decided to take up residence and run up and down the front yards. pic 54
They follow me ( yeah .... felt like mother goose! pic 55)   and showed them  to my meighbors back yard  ( don't want their green poo on my sidewalk and the dog was going goofy when she saw them).
Still here today........just can't pick your relations or your neighbors. Guess one should look at things from their point of view.


RICH
 

1333

Show"N"Tell ( What you have made with your CNC machine.) / Re: 1/5th Scale V8 Blown

« on: March 30, 2015, 09:17:32 PM »

Neat yes, but the sound of it reaving up is even better.
Nice work....keep it up!

RICH

1334

General Mach Discussion / Re: Y axis missing steps while running gcode, smooth while jogging

« on: March 30, 2015, 09:13:50 PM »

I never heard of a drain wire! Maybe that's why my discipline was process / mechanical.

A shield provides for protecting what's inside of the shield from coupling with signals that are  outside of the
shield. Likewise it keeps signals inside the shield from being getting outside of it. If the shield was a continous metal tube
one would say that there is 100% shielding. The shield can provide a least resistive path to earth ground. You don't send the signals traveling outside the shield  to another circuit connection as that would be just coupling the interferjng signals
to some other circuit. Now what hapens inside is a different story. If an offending signal, noise ( noise is not understood by us),  is inside of the shield then it can couple and get mixed in with the signal on the wires. The uninsulated wire can offer
a less restrictive path to ground and help  minimise the the noise. So guess one could say it is "drain for the conduit"  ie; the conduit is filled with liquid and want to get rid of it...............

Yes leave the one end unconnected.

Noise can be a real bear to find and get rid off or control, but, a seperate ground system for noise is the first step to elimination.

As the saying goes is the above "clear as mud"? 

RICH
  

1335

General Mach Discussion / Re: Finding center of part using a axis

« on: March 30, 2015, 08:46:44 AM »

Do you understand how to use / code for Work Offsets?
The reason I ask is that you want to combine and automate a  bunch of operations.
There is no single code, magic button or screen set that will do that.

There are probing routines that can do a lot for helping to setup a job or can be used to find information
for manual programing. What or how you  use that information is different story.

FWIW below....
Machine is Homed and based on G54, do one operation, the next requires requires probing to find a location,
so when done with the first operation go home. Now use another Work offset , say G55 ( should not have any offsets ), do the probing and  setup required  and create the G55 Work offset for the second opertation. If duplicate operations are to be done with just a change in direction you can use  a G52 for them. Then home the machine, cancel the G52 and go back to using G54.  Just one way ....all depends on how you code it,,,,how your setup , etc.

No magic but all requires understanding of what and why YOU are doing something.

RICH

1336

General Mach Discussion / Re: Finding center of part using a axis

« on: March 30, 2015, 06:29:39 AM »

There a number of ways to find one location to another.
Using Machine Coordinates along with creating different Work Offsets to keep track of touched off / probed
points can give you the information to figure where the square is in relation to the cylinder.

If the part drawn is correctly you could always use CAD.

Check out the Wizard section for a Wizard that records points.

RICH

1337

General Mach Discussion / Re: G code editor

« on: March 29, 2015, 07:11:58 PM »

CONFIG>GENERAL CONFIG
Under Editor click the browse button and define where the editor exe file is located. ie;C:\notepad.exe
Save your settings.

Make sure when you use the editor that you save your changes to the gcode file.

RICH

1338

General Mach Discussion / Re: constant velocity same as css??

« on: March 29, 2015, 11:59:50 AM »

I don't have a variable speed drive on anything.
One of these day's.... so someone who uses one can tell you exactly how well CSS works for the lathe and mill.
Yes, the speed should change as things get smaller ie; doing a facing cut or  cut off on the lathe.

constant velocity could mean same velocity around corners

Mach will try, there is a info on CSS and associated config settings. Do a search to find.

link to info:
http://www.machsupport.com/forum/index.php/topic,7923.msg50240.html#msg50240

RICH

1339

General Mach Discussion / Re: Hall Effect or Slotted Opto?

« on: March 29, 2015, 11:51:09 AM »

No, I just stated that I don't have or use a break out board.
You must use something to get an index pulse for Mach to know the spindle speed.
 Sorry for the confusion...

RICH

1340

General Mach Discussion / Re: constant velocity same as css??

« on: March 29, 2015, 11:01:23 AM »

hmm.....
Constant velocity is constant speed, but remember that velocity is a vector so that it has direction associated with it.
But that said......
Constant surface speed would relate to movement at a rate with no change in the rate while constant velocity in Mach
relates to trying  to maintain a constant speed throughtout all the movements ie; around a turn.

My 2 cents if it's anything to ya,

RICH