RE: [CAD_CAM_EDM_DRO] Re: Sherline Mill
Posted by
Carol & Jerry Jankura
on 2001-10-26 16:36:40 UTC
Hi, Bill:
I've done the same thing to a Sherline 2000 mill.
| I have a Sherline Mill that I am converting to CNC. I have a couple of
| questions I hope somebody can answer for me.
|
| (1) I have 100 oz Steppers for X, Y and a 190 oz Steeper for Z. Will
| these work satisfactory with this size of Mill?
Most likely. I bought the Sherline steppers because they were double ended
(I wanted to have the hand wheels for manual as well as automatic
operation). They're rated around 100 oz-in.
| (2) What about the lead screws that come with the Mill. Are these
| satisfactory for CNC work? Will backlash be a problem with this Factory
| screw?
Many people are using Sherline's for CNC. Backlash is a problem only if your
software does not allow for compensation. If it does, The sherlines will
work quite well.
| (3) I am planing to use a Camtronics 3Axis 2Amp Chopper Driver Board.
Assuming that you require no more than 2 amps for the motors, the Camtronics
will do well for you. I'm using that board with my system. My concern would
be the current required by the 190 oz-in motor.
Other comments:
Be careful of the computer speed. I tried running TurboCNC on a Zenith
486DX2-50Mhz system and found that the motors would stall quite easily at
relatively low speeds. Then, I ran the same software on my Sony Pentium-III
450 Mhz notebook and found that everything was smooth. I think that the
Zenith probably did not provide a uniform pulse train, but I've got to get
the scope out and look at the step pulses to be sure. I've had good luck
using the VectorCAD-9.0 that's available at low cost to list members coupled
with ACE Converter that Yeager offers for free and TurboCNC which is a
shareware product ($10.00 gets you the source code if you like to play with
TurboPascal. BTW, I've also gotten TurboCNC to compile using the
Delphi-Release 1 command line compiler)
-- Jerry Jankura
Strongsville, Ohio
So many toys, so little time....
I've done the same thing to a Sherline 2000 mill.
| I have a Sherline Mill that I am converting to CNC. I have a couple of
| questions I hope somebody can answer for me.
|
| (1) I have 100 oz Steppers for X, Y and a 190 oz Steeper for Z. Will
| these work satisfactory with this size of Mill?
Most likely. I bought the Sherline steppers because they were double ended
(I wanted to have the hand wheels for manual as well as automatic
operation). They're rated around 100 oz-in.
| (2) What about the lead screws that come with the Mill. Are these
| satisfactory for CNC work? Will backlash be a problem with this Factory
| screw?
Many people are using Sherline's for CNC. Backlash is a problem only if your
software does not allow for compensation. If it does, The sherlines will
work quite well.
| (3) I am planing to use a Camtronics 3Axis 2Amp Chopper Driver Board.
Assuming that you require no more than 2 amps for the motors, the Camtronics
will do well for you. I'm using that board with my system. My concern would
be the current required by the 190 oz-in motor.
Other comments:
Be careful of the computer speed. I tried running TurboCNC on a Zenith
486DX2-50Mhz system and found that the motors would stall quite easily at
relatively low speeds. Then, I ran the same software on my Sony Pentium-III
450 Mhz notebook and found that everything was smooth. I think that the
Zenith probably did not provide a uniform pulse train, but I've got to get
the scope out and look at the step pulses to be sure. I've had good luck
using the VectorCAD-9.0 that's available at low cost to list members coupled
with ACE Converter that Yeager offers for free and TurboCNC which is a
shareware product ($10.00 gets you the source code if you like to play with
TurboPascal. BTW, I've also gotten TurboCNC to compile using the
Delphi-Release 1 command line compiler)
-- Jerry Jankura
Strongsville, Ohio
So many toys, so little time....
Discussion Thread
Bill Blackburn
2001-10-23 11:43:40 UTC
Re: Sherline Mill
Dan Statman
2001-10-23 12:21:56 UTC
Re: [CAD_CAM_EDM_DRO] Re: Sherline Mill
ccs@m...
2001-10-23 13:48:08 UTC
Re: [CAD_CAM_EDM_DRO] Re: Sherline Mill
Carol & Jerry Jankura
2001-10-26 16:36:40 UTC
RE: [CAD_CAM_EDM_DRO] Re: Sherline Mill