Messages

211

Works in progress / Re: Password Protected Pages

« on: June 30, 2018, 10:06:23 AM »

You can create password  protection "indirectly" for a  Mach3 screenset.
You will need to create a custom screen set and create custom scripting to accomplish it.
Nothing is bullet proof.

Not sure where I have put that info in my storage vaults.

RICH

212

General Mach Discussion / Re: "Software Limits" in Status during Ref All Home

« on: June 25, 2018, 03:56:47 PM »

nothing has been working or worked out... any help from anyone. Need help pls reply.

thx

NOTE:
This post from faisalno5 moved from "Re: New people welcome !! Come in here and introduce your self!"
RICH

213

General Mach Discussion / Re: Lathe Spindle Synchronisation

« on: June 24, 2018, 09:20:30 AM »

Not all Hall affect sensors are the same in their ability to trigger depending on rpm.
So read the spec's on it. A reed hall sensor would be to slow. Optical sensors work but the hall's
make for an easier instalation.

The motor rpm should be +-1 rpm , and if you measure it make sure your rpm measuring device has
a  % resolution that allows to that +- value.

The rpm should be manualy set for the motor. DO NOT have the motor constantly adjusting itself
when threading. Mach adjusts in the NEXT pass / pathing move  for variations in motor slow down.
You don;t want the two fighting each other!
Even though Mach threading has  the ability to address a rather large slowdown, it is not the way to
do threading. Adjust cut type and / or depth of cut to address motor torque available.

Mach synchronises the threading  / feedrate based on the it's true rpm dro and watches the rpm
for changes during threading. Spindle speed averaging just uses start and few other readings of the rpm
to set the feedrate for the next thread pass.

The more motor HP you have the better you will find that spindle slow down won't be a problem.
All depends on the material, depth of cut, cut type etc and this is covered in the threadnig on the lathe wirte up.
Accurate axis screws with no backlash is most desired.

RICH

214

General Mach Discussion / Re: FEED ADJUST MACH 3 LATHE

« on: June 24, 2018, 08:45:48 AM »

I use a modified screen for the lathe.
It has the same + and -  increase / decrease increment arrow buttons which reflect the initial incement
FRO value as the generic screen. Note that you input the increment value in the dro, say 5 ipm, then
when you press the + arrow button it will show 10 ipm and so on in increments of 5.
 
I  added a slider from the mill screen STD code 21 and also a 100% FRO button.
So if I click the 100% the FRO value will change to MAX Velocity set in in motor tuning for the axes.
I can also use the slider and even though it may allow 250% you can only increase feedrate to 100%
or your max velocity. The feed rate value will change in the DRO showing the set / current federate.
 Now note that in my configuration "Lock rapid fro to feed fro" is checked.
G48 and G49 act as toggle for turning FRO on and off and is modal.

So the feedrate can be changed during a G0 or G01 when in G94 mode.
Don't have time to see what happen when in G95 mode, and would not use in that mode anyway,
since G95 is for turn only and it has to do with threading where feedrate is based on real time rpm along
with a feedrate relative to the thread being cut.

If  I get a chance I'll check out the G95 mode but will guess  fro won't  work in that mode.

Till Whenever,
RICH

215

General Mach Discussion / Re: Threading problem, strange motion, Please help!

« on: June 23, 2018, 07:09:40 AM »

Fusion,
Glad it's working.
I didn't forget this thread just dealing with so many things and didn't have the time to get into a detailed look.

I did find that, when simulating, that there were additional moves shown in the graphic screen and didn't matter if G76 or G32 was used for threading.
Additionally , depending on how one selects a the start point of the threading the graphics would change, and BTW that was using you XML file.
To get a "cleaner" graphics display of the gcode produced you select a start, referenced / tool change location, with a  3x the lead away from physical
location of the material and I didn't get goofy display. Note that it's a screen issue and you should not actually have an actual axis move as shown on the screen. I know the above is not clear but, again, just don't  have time to write it all up / explain  in detail.

That's why I said to actually do a thread!

Anyway, it's working for you and life is good......

RICH

216

General Mach Discussion / Re: Turn, OD Taper wizard question

« on: June 17, 2018, 06:00:44 PM »

Mike,
The Turning wizard has a number of wizards which you can use.
Use the OD Taper 2 wizard for what you want to do. If I recall correctly, angle input value is  the "total angle"
not just one side.

May want to consider / learn  LazyTurn  which is free and there is a manual for it. Basic, easy to use program
to provide gcode for outside contouring.

RICH

217

General Mach Discussion / Re: Threading problem, strange motion, Please help!

« on: June 12, 2018, 05:21:29 PM »

Another weird thing it does sometimes is slowing the feed to a crawl.  In threading it has to move fast in the Z to match the pitch, but sometimes maybe even mid-pass, it slows to a snail's pace.

That is a motor power problem as it relates to the depth of cut you are taking. Note that the VFD has no feedback to maintain the rpm
under motor load.

I strongly suggest you read Threading on The Lathe writeup I did as it makes no sense to repeat what has already been noted in the writeup.

RICH

218

General Mach Discussion / Re: Threading problem, strange motion, Please help!

« on: June 11, 2018, 03:49:27 PM »

Manualy turn on and manualy set rpm of the  VFD.
I did this too. I had the spindle manually controlled at the VFD set to 400 RPM. The stepper drives and PS were disconnected. The C3 board was disconnected. The C6 board was disconnected.

So you keep it basic. Just use the VFD manually for a test. The hall effect index is used to provide input to Mach for the RPM.
So.....load Mach3 , turn on and set the vfd ( you should not see any rpm indication until the you click spindle button, then you should see rpm via the input from the index ),load the threading program and do an air test of the threading. better yet would be to just do a scribe test of the threading for a test.

I personally also prefer to have the wizard provide g32 threading code since every axis move is delineated in the code.
So maybe change the macro ( how to change the macro is in the Threading On the lathe Writeup).

RICH

219

General Mach Discussion / Re: Re: accuracy is off

« on: June 11, 2018, 09:07:11 AM »

Mike,
This is a backplot of the gcode you posted. Don't think it's the correct one for the pictures you attached ........

RICH

220

General Mach Discussion / Re: Threading problem, strange motion, Please help!

« on: June 11, 2018, 08:50:15 AM »

Fusion,

- different widths from 1/2" up to 1-1/2" with no real improvement

The turn manual provides for calculating the slotwidth. The slot width can be wider than necessary.
If too narrow the RPM may not show.  Since you changed over to a Hall effect mute point on the
width of the slot. Just manualy turn the spindle by hand and you should see the index led turn on and off
in diagnostics. I cover testing of the index in Threading on the Lathe writeup.

- I have tried Index Debounce settings from 0-1000

Index debounce is simply how many times Mach must see the index before it accepts the input.
I personaly use a value of 100,  others can get away with 10. If a high index value is used  you may
have a long waite time before the index signal is accepted and the threading begins ( changes to G95).

- motion to 50 IPM with 12 acceleration

I also use the Simple Threading Wizard . You should always click the "calc number of passes"
and it will inform you if the accel / feedrate  is not adequate based on you motor tuning for the
inputed Spindle rpm.

- I also tried version 066

Use version 062 and don't use 066 as it is problematic.

- It seems to be a noise issue

VFD's can cause noise problems. Not sure noise is your problem.....

- You have backlash enabled and thus there is motion which takes place to implement the backlash.
Suggest you turn backlash  off and see if the strange motion goes away. As far a using backlash relative to
to threading................GET RID / minimize BACKLASH if you want accurate threading.  PERIOD!

- In a effort to simplify the troubleshooting, I disconnected the C3 index board and the C6 spindle
control. So the only active component is the C10 breakout board. The spindle was turned on at the
VFD and held a rock steady 400 rpm. No stepper drives or power supply was active either.  
Even with it as bare bones as this, Mach was still making strange moves.
The C10 BOB is new.  Could it be bad? It seems to function just fine with the expecption of threading.

HMM........ the signal for RPM to Mach for RPM readout is coming from the break out board with the
VFD as the source of the signal. There can only be one signal for rpm readout when threading.
I thought that you changed from using the C3 index board to a Hall affect? So the hall affect should be
used as the single source and you also click the spindle button on to get the RPM readout.

Manualy turn on and manualy set rpm of the  VFD.

You don't want two signals fighting each other for the basis of the RPM used in threading!

Just some thoughts,
RICH