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Re: Spindle sensors

Art
 

Jerry:

Better tracking of the spindle speed changes that may occur. The
variations depend on the machine, the spindle and quite a few factors, so
for some there is an advantage, for others there is none.

Art
www.artofcnc.ca
Re: ShopBot conversion.

 

--- In mach1mach2cnc@..., "podunkmofo822" <podunk@v...>
wrote:
Steve,




I looked into upgrading my control box & even w/ trade in I think
they
wanted something like $2,000 for the new one. I think it would be
cheaper to look for some other controller (I don't think xylotex
would
handle that motor size) or try to figure out at what point that
controller is sending step & direction and jump in at that point.
I
am not that technical so my theory may be total crap but it sounds
logical.
Steve,

Your theory is correct. Ted Hall explained to me that there is a
point on the controller board that can be used to attach to step and
direction software. Not being technical myself, I can't remember
where that point is. Nor can I remember if he said I can use the
original drivers or would have to replace the drivers.

The original ShopBot drivers are 1/4 step and induce considerable
low speed resonance. In addition to the much more efficient Mach2
interface, you should get better overall performance with 10
microstep drivers like Gecko 201. The cost to replace the control
box with Gecko 201s and Mach2 should be not more than USD $850.00.

The real time tool path display and the ability to start a program
from any line are worth the price of Mach2 on their own.

Steve
Re: Spindle sensors

 

I've got the sensor here working with 8 triggers and a wider one
for index. I'm working on a four thread start, 2.5 tpi device as
shown in "Bloy's Photos". So far I have a steady rpm reading of 291.
I got this reading with the single trigger/pulse, and also the 8
trigger/pulse setup. I want to go slow for this project and so far
have been able to get the machine to "go through the motions" using
the g-codes that Steve sent. Now I've got to change all the
settings to conform to my use here. It's a puzzle, but I think Art
and Steve have provided the pieces I need to get and idea of
the "picture".
John

--- In mach1mach2cnc@..., Scott Wilson <swilson@d...>
wrote:
yeah i had to slow my big one down....at 2k rpm...the
instantaneous
reverse threw a 100 amp spike down the line.

Steve Blackmore wrote:

On Fri, 05 Mar 2004 11:33:06 -0000, you wrote:


Since Art and Steve and others have proven Mach2 can cut threads
with a single spindle pickup, I'm wondering what advantage
there is
to multiple signals per revolution?
Hi Jerry

The only advantage I can see is for those wanting to work at low
revs.

1 slot works well at 400-1100 rpm (only speeds I've tested
thoroughly). Below 350rpm Mach2 reads rpm erratically for me.

I would think that more slots would work better at low speed but
could
become a bit of a problem at "production" CNC speeds. As has
been said
here by others, even 1000rpm is slow for "real" CNC threading.

I'll try and get my multi-slot disc finished this weekend and
give it
a try - but the only thing I'm really expecting is increased
processing overhead.

--
Steve Blackmore
Re: ShopBot conversion.

Robert Campbell
 

Steve,

I would be interested in working with you and help you build a new Mach2
controller for your Shopbot.

I would like to offer a Mach2 conversion kit which would include our Sound
Logic Mach2 breakout board.

I would also like to provide a conversion kit for the Shopbot plasma system.
The kit would include both our THC (torch height control) board set and our
breakout board.

Bob Campbell
Bob@...
www.campbelldesigns.com
Breakout board
THC board sets
CNC router plans
Stepper Motors

----- Original Message -----
From: "podunkmofo822" <podunk@...>
To: <mach1mach2cnc@...>
Sent: Friday, March 05, 2004 12:31 PM
Subject: [mach1mach2cnc] Re: ShopBot conversion.


Steve,




I looked into upgrading my control box & even w/ trade in I think they
wanted something like $2,000 for the new one. I think it would be
cheaper to look for some other controller (I don't think xylotex would
handle that motor size) or try to figure out at what point that
controller is sending step & direction and jump in at that point. I
am not that technical so my theory may be total crap but it sounds
logical.





Yahoo! Groups Links
Re: ShopBot conversion.

 

Steve,




I looked into upgrading my control box & even w/ trade in I think they
wanted something like $2,000 for the new one. I think it would be
cheaper to look for some other controller (I don't think xylotex would
handle that motor size) or try to figure out at what point that
controller is sending step & direction and jump in at that point. I
am not that technical so my theory may be total crap but it sounds
logical.
Re: Spindle sensors

Steve Blackmore
 

On Fri, 05 Mar 2004 11:33:06 -0000, you wrote:


Since Art and Steve and others have proven Mach2 can cut threads
with a single spindle pickup, I'm wondering what advantage there is
to multiple signals per revolution?
Hi Jerry

The only advantage I can see is for those wanting to work at low revs.

1 slot works well at 400-1100 rpm (only speeds I've tested
thoroughly). Below 350rpm Mach2 reads rpm erratically for me.

I would think that more slots would work better at low speed but could
become a bit of a problem at "production" CNC speeds. As has been said
here by others, even 1000rpm is slow for "real" CNC threading.

I'll try and get my multi-slot disc finished this weekend and give it
a try - but the only thing I'm really expecting is increased
processing overhead.

--
Steve Blackmore
Re: Spindle sensors

Scott Wilson
 

yeah i had to slow my big one down....at 2k rpm...the instantaneous
reverse threw a 100 amp spike down the line.

Steve Blackmore wrote:

On Fri, 05 Mar 2004 11:33:06 -0000, you wrote:


Since Art and Steve and others have proven Mach2 can cut threads
with a single spindle pickup, I'm wondering what advantage there is
to multiple signals per revolution?
Hi Jerry

The only advantage I can see is for those wanting to work at low revs.

1 slot works well at 400-1100 rpm (only speeds I've tested
thoroughly). Below 350rpm Mach2 reads rpm erratically for me.

I would think that more slots would work better at low speed but could
become a bit of a problem at "production" CNC speeds. As has been said
here by others, even 1000rpm is slow for "real" CNC threading.

I'll try and get my multi-slot disc finished this weekend and give it
a try - but the only thing I'm really expecting is increased
processing overhead.

--
Steve Blackmore


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Re: OCX group

 

Peter,

Since the OCX is an integral part of Art's software and he offered to help
out in any way, why not keep it within the scope of this group. Unless Art
feels otherwise, let's try and do it here - perhaps more people would learn
and/or contribute when they see how it ties into their software.

I'm willing to help and share as I'm trying to implement the OCX within VB
as well.

James

----- Original Message -----
From: "Peter" <elasebay@...>
Subject: [mach1mach2cnc] OCX group


Hello VB programmers. How about a temporary separate until we get to
the bottom of the OCX.
Raster To vector

rekmac
 

If anyone is lookig for an easy Raster to Vector converter go to

and download the ver. 2.61. Then go to files look for Raster to
Vector file.
Richard
Re: TOYS was [still can not clear E-Stop in Mach 2]

Erie Patsellis
 

I hear that alot, till they sit down to watch a movie....

erie

tagrace_99 wrote:

What a sick group we are.
Re: Beginner's Guide to OCX Implementation Request

 

Mark
You have probably done this, but is you licenses file in the Mach2
folder?
Jim

----- Original Message -----
From: "Mark Tucker" <rmtucker@...>
To: <mach1mach2cnc@...>
Sent: Friday, March 05, 2004 12:43 AM
Subject: [mach1mach2cnc] Re: Beginner's Guide to OCX Implementation Request


--- In mach1mach2cnc@..., Les Newell <les@l...> wrote:
Hi Art,

There is still something wrong. If I compile the program then run
the
exe it mostly works. If I try and run the program from within the
VB IDE
then VB bombs with a protection fault.

There are also some major redrawing problems when using the OCX
from VB.
Labels don't get redrawn correctly if the main window is resized
or
another window is dragged over it. Also when you switch from one
page to
another the controls on the new page don't always get drawn and
the
controls from the previous pages don't get erased. Forcing a
refresh by
moving another window over the application sorts it out apart from
the
labels.

With Borland C++ builder the IDE doesn't crash but I get the same
redraw
problems. I also had to use SetWindowHandle to stop everythig
getting
drawn on the desktop. Also for some reason I get an access
violation
when I try to call SetProfileName()

Les
Les/Art

I thought it was my poor vb understanding but i am getting all the
faults above of which the first one (vb crashing when in ide is a
pain).
I have been writing progs and having to compile to exe to check them
which does not make debugging very easy.I also can not get the about
box to display the license,it displays "demo mode" even though
everything is in the same directory (license.dat,Project,ocx).

At least i know i am not going mad.

Regards
Mark






Yahoo! Groups Links
Re: Beginner's Guide to OCX Implementation Request

Les Newell
 

Hi Art,
The main two problems that I know of with VB are:

1) VB crashes as soon as you try running your app. This is before any calls are made to the OCX. If the same app is compiled then run as an exe then it runs OK but of course you can't debug it. As you don't have a copy of VB it could be a problem for you to find this one.

2) Graphic redraw problems. The VB demo I sent you a while back should show this. Try resizing the window or changing pages.

Sorry about the CBuilder test program I sent you last night. I thought the exe seemed very small. I will try to see why it did not compile with static libraries.

Les

Art wrote:

Hi Mark, Les..et all.
There seems to be a growing interest in useing the OCX for application
development. Unfortunately I never use VB and don't know how on a good day.
I can tell you a few things..
1) You application will read demo unitl the engine is fully started. It is
the process of starting the engine that verifies your license.
2) Errors like crashing are probably due to all the graphics involved.
Perhaps no screens should be loaded. It should be possible to InitEngine,
StartEngine, Reset, and then StraightFeed(x,x,x,x,x,x). If someone writes
such a beast and it won't feed, I will debug and let you know why it won't
run as it is. I would love to see a guide to VB'ing the ocx and will assist
all I can.
If you guys get an application that is crashing or doing something
improper, send me a non-debug version and I can use it to debug with and let
you know the trouble. I suspect that, unlike C++, VB may have trouble with
the graphics, but it should still be able to move the motors and such via
OCX control. While I did design everything as an OCX for that very reason,
till now, no-one has wanted to use it in this way. I will, of course, help
as much as I can along the way..
Thanks,
Art
www.artofcnc.ca
Yahoo! Groups Links
Spindle sensors

ozzie34231
 

Hi All,

Since Art and Steve and others have proven Mach2 can cut threads
with a single spindle pickup, I'm wondering what advantage there is
to multiple signals per revolution?

Jerry
Re: cnc plasma

Scott Wilson
 

actually back around 93-94 there was a product for sheet metal that was a 'gantry' scanner that could be used to input sheet metal or other thin items...also used as inspection system.
Re: Photo's added of my new 4th/5th axis head assembly

Art
 

Alan:

If I had a quarter for each of those that I've thrown out.....
(Before I got into this stuff anyway...)

Art
www.artofcnc.ca
Re: Beginner's Guide to OCX Implementation Request

Art
 

Hi Mark, Les..et all.

There seems to be a growing interest in useing the OCX for application
development. Unfortunately I never use VB and don't know how on a good day.
I can tell you a few things..

1) You application will read demo unitl the engine is fully started. It is
the process of starting the engine that verifies your license.

2) Errors like crashing are probably due to all the graphics involved.
Perhaps no screens should be loaded. It should be possible to InitEngine,
StartEngine, Reset, and then StraightFeed(x,x,x,x,x,x). If someone writes
such a beast and it won't feed, I will debug and let you know why it won't
run as it is. I would love to see a guide to VB'ing the ocx and will assist
all I can.

If you guys get an application that is crashing or doing something
improper, send me a non-debug version and I can use it to debug with and let
you know the trouble. I suspect that, unlike C++, VB may have trouble with
the graphics, but it should still be able to move the motors and such via
OCX control. While I did design everything as an OCX for that very reason,
till now, no-one has wanted to use it in this way. I will, of course, help
as much as I can along the way..

Thanks,
Art
www.artofcnc.ca
Re: cnc plasma

Robin Szemeti
 

On Friday 05 March 2004 03:13, dk32544 wrote:
If you have a part, say a bracket, but don't have a drawing what's a
good what to get it into mach1?
To get from parts to CAM, I've been using my drawing package with a handy
add-on called 'a ruler' ... its a sort of metal stick with graduations along
the edge ... quite handy really. You can use it to get all sorts of bits of
the real world put into a CAD system. Its a fairly manual process, but it
works well.

trying to scan such things automatically is a non-starter. It is possible,
but it will take ten times as long wy the time you have converted to point
cloud data to curves etc ... for 2D parts of low accuracy (thats what plasma
is I'm afraid) probing is not an appropriate technology, unless of course
you don't mind it taking much longer than just drawing it and possibly
yielding a worse result.

--
RapidCut CNC Technology

CNC Plasma Cutter
OCX group

 

Hello VB programmers. How about a temporary separate until we get to
the bottom of the OCX.

Any ideas ?

I suggest we prototype some Functions / Subs , and come up with a
mechanism to share code in a smart way ?

We can call it the ArtsMotionOCX group.

Best regards
Peter
Re: Beginner's Guide to OCX Implementation Request

 

Hi, Mark

Do you feel like sharing VB code?
This OCX is driving me nuts.
here is what I suggest:
We agree on a name for the OXC (say ArtsMotion, or simply M like in
motion to save typing)
We agree on some common routines that one needs
We prototype the functions and Subs and then distribute them for
general testing and feed back.
We can also distribute the exe files for people that are willing to
test our code, without getting into the VB details

If you see any value in this please respond to peterd@...

best regards
peter

PS:
?? Have you used M.StraightFeed ?
I can not figure out why VB doesn't accept the syntax, according to
the object browser this is a sub but it seems to be a function






--- In mach1mach2cnc@..., "Mark Tucker" <rmtucker@l...>
wrote:
--- In mach1mach2cnc@..., Les Newell <les@l...> wrote:
Hi Art,

There is still something wrong. If I compile the program then run
the
exe it mostly works. If I try and run the program from within the
VB IDE
then VB bombs with a protection fault.

There are also some major redrawing problems when using the OCX
from VB.
Labels don't get redrawn correctly if the main window is resized
or
another window is dragged over it. Also when you switch from one
page to
another the controls on the new page don't always get drawn and
the
controls from the previous pages don't get erased. Forcing a
refresh by
moving another window over the application sorts it out apart
from
the
labels.

With Borland C++ builder the IDE doesn't crash but I get the same
redraw
problems. I also had to use SetWindowHandle to stop everythig
getting
drawn on the desktop. Also for some reason I get an access
violation
when I try to call SetProfileName()

Les
Les/Art

I thought it was my poor vb understanding but i am getting all the
faults above of which the first one (vb crashing when in ide is a
pain).
I have been writing progs and having to compile to exe to check
them
which does not make debugging very easy.I also can not get the
about
box to display the license,it displays "demo mode" even though
everything is in the same directory (license.dat,Project,ocx).

At least i know i am not going mad.

Regards
Mark
Spindle speed control

bsjoelund
 

Hi,
I have an old CNC Lathe with 3-phase 5,5kW spindle motor and I want
to control the spindle revs from MACH2.
There is one box (VFD?) that is probably out of order.
Sanken Samco-V SHV7520 (trying to find information on this one)

So what do I need? I have PC/Mach2 2 printerports.

Somekind of interface between p-port and new VFD (0-10V?)
or any other suggestions.

Looking for your advise, fantastic as always.

Bengt
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