Things have moved on! You would be better downloading the following files:-
Manual
Parts
Schematic
And the two RELS-V3 files

Bear in mind that the RELS does not allow feeding or threading at thousands of rpm. However it covers just about all of the threads you might want with the capability of adding more. You can work in metric or imperial. Any taper from parallel to 45 degrees Internal or External. Only 5 buttons plus a reset. Threading can be plunge or 29.5 degrees. Allows for checking the thread at the end of an auto cycle then further cuts if needed. 0 to 3 spring passes can be set in Auto. Threading is performed at constant cut area. Not difficult for a layman to build. Not expensive. Encoder controlled so it can handle speed droops during a threading pass. Arduino Mega based so simple to download. Arduino IDE is required for upload and Open Office required for the spreadsheet file used to generate the parameters for YOUR machine.
Any problems just yell.

Richard

On 21/07/2020 18:56, Ralph Hulslander wrote:

Darn I bet?RELS_Metric_2-32.ino? is the RELS files, duh!

Ralph
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

?I just checked to ensure that the Spreadsheet file was not locked and it is not so I am not sure why you are? not seeing the calculations change after changing the parameters. I did note a single cell error in the spreadsheet which I have fixed. Please download RELS_V3.00i.ods and work with that.

I would suggest you rethink your parameters.
An entry for Z pitch of 3.175mm suggests you have a very large stepper driving the screw. You will see that the entry for pitch is that "seen" by the stepper. In other words after any timing belt reduction if used. My leadscrew has a 3mm
pitch but is driven 2:1 so is entered as 1.5mm.
It is unusual to run your motors at full step.
Your encoder needs to installed with a "step up" belt drive. 800ppr will give poor resolution.
Basically the numbers that you are suggesting will give a very poor setup.
However if just simulating on the bench then no matter. Just check all of the error messages in the spreadsheet. If the message indicates that a thread, feed-rate, or taper is unacceptable a sketch running those derived tables will have un-determinable results!!!!!!!

Good luck
Richard

?

On 21/07/2020 22:29, Ralph Hulslander wrote:

Thanks Richard, I see you uploaded new files. THANKS!!

I started looking at the spreadsheet and really got confused.

I "thought" that if I changed the parameters they would update through the tables but apparently not.

I have 8 TPI 3.175mm

Encoder 800 ppr

Z Stepper steps 200(? might change)

X Stepper steps 200(?)?

I still need to mount the Z & X steppers but thought I would do a desktop simulation.

I can use a PWM module for the spindle encoder pulse.

Actually it is really hot outside so I am able to steal some time to work on ths. I am supposed?to be working

in the garden or doing the hundreds of things I need to finish outside.

You will probably hear a lot of yelling and screaming and cussing and hair pulling.

But thanks again! This will really be so cool to get operating. We need videos of RELS in action.

Ralph

On Tue, Jul 21, 2020 at 3:13 PM Richard <edelec@...> wrote:

Things have moved on! You would be better downloading the following files:-
Manual
Parts
Schematic
And the two RELS-V3 files

Bear in mind that the RELS does not allow feeding or threading at thousands of rpm. However it covers just about all of the threads you might want with the capability of adding more. You can work in metric or imperial. Any taper from parallel to 45 degrees Internal or External. Only 5 buttons plus a reset. Threading can be plunge or 29.5 degrees. Allows for checking the thread at the end of an auto cycle then further cuts if needed. 0 to 3 spring passes can be set in Auto. Threading is performed at constant cut area. Not difficult for a layman to build. Not expensive. Encoder controlled so it can handle speed droops during a threading pass. Arduino Mega based so simple to download. Arduino IDE is required for upload and Open Office required for the spreadsheet file used to generate the parameters for YOUR machine.
Any problems just yell.

Richard

On 21/07/2020 18:56, Ralph Hulslander wrote:

Darn I bet?RELS_Metric_2-32.ino? is the RELS files, duh!

Ralph
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

Re pitch yes 0.396875mm but I expect you will have problems. What stepper are you using and how are you driving it?
Best to use Open Office for the moment. We are working to make the Spreadsheet acceptable to both Open Office and Excel.
Richard

On 22/07/2020 18:03, Ralph Hulslander wrote:

Thanks Richard, I was using Excel not Open Office. I do have Open Office so I will try again.

re: " My leadscrew has a 3mm?pitch but is driven 2:1 so is entered as 1.5mm.?"?

I have a 8TPI (3.175) Z leadscrew the stepper motor will have a (motor 8 rpm leadscrew 1 rpm)

re: "

Z Leadscrew Pitch mm

1.5000

If a gear or timing belt drive is used enter the pitch as “seen” by the stepper for one revolution

"

So should I enter 0.396875 (3.175/8) Ralph

On Wed, Jul 22, 2020 at 2:15 AM Richard <edelec@...> wrote:

?I just checked to ensure that the Spreadsheet file was not locked and it is not so I am not sure why you are? not seeing the calculations change after changing the parameters. I did note a single cell error in the spreadsheet which I have fixed. Please download RELS_V3.00i.ods and work with that.

I would suggest you rethink your parameters.
An entry for Z pitch of 3.175mm suggests you have a very large stepper driving the screw. You will see that the entry for pitch is that "seen" by the stepper. In other words after any timing belt reduction if used. My leadscrew has a 3mm
pitch but is driven 2:1 so is entered as 1.5mm.
It is unusual to run your motors at full step.
Your encoder needs to installed with a "step up" belt drive. 800ppr will give poor resolution.
Basically the numbers that you are suggesting will give a very poor setup.
However if just simulating on the bench then no matter. Just check all of the error messages in the spreadsheet. If the message indicates that a thread, feed-rate, or taper is unacceptable a sketch running those derived tables will have un-determinable results!!!!!!!

Good luck
Richard

?

On 21/07/2020 22:29, Ralph Hulslander wrote:

Thanks Richard, I see you uploaded new files. THANKS!!

I started looking at the spreadsheet and really got confused.

I "thought" that if I changed the parameters they would update through the tables but apparently not.

I have 8 TPI 3.175mm

Encoder 800 ppr

Z Stepper steps 200(? might change)

X Stepper steps 200(?)?

I still need to mount the Z & X steppers but thought I would do a desktop simulation.

I can use a PWM module for the spindle encoder pulse.

Actually it is really hot outside so I am able to steal some time to work on ths. I am supposed?to be working

in the garden or doing the hundreds of things I need to finish outside.

You will probably hear a lot of yelling and screaming and cussing and hair pulling.

But thanks again! This will really be so cool to get operating. We need videos of RELS in action.

Ralph

On Tue, Jul 21, 2020 at 3:13 PM Richard <edelec@...> wrote:

Things have moved on! You would be better downloading the following files:-
Manual
Parts
Schematic
And the two RELS-V3 files

Bear in mind that the RELS does not allow feeding or threading at thousands of rpm. However it covers just about all of the threads you might want with the capability of adding more. You can work in metric or imperial. Any taper from parallel to 45 degrees Internal or External. Only 5 buttons plus a reset. Threading can be plunge or 29.5 degrees. Allows for checking the thread at the end of an auto cycle then further cuts if needed. 0 to 3 spring passes can be set in Auto. Threading is performed at constant cut area. Not difficult for a layman to build. Not expensive. Encoder controlled so it can handle speed droops during a threading pass. Arduino Mega based so simple to download. Arduino IDE is required for upload and Open Office required for the spreadsheet file used to generate the parameters for YOUR machine.
Any problems just yell.

Richard

On 21/07/2020 18:56, Ralph Hulslander wrote:

Darn I bet?RELS_Metric_2-32.ino? is the RELS files, duh!

Ralph
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

These are the steppers I have but I could get different ones if I get another stimulus?check.

?

I have thought of getting some NEMA 34 steppers and driving the leadscrew directly.

Ralph?

On Wed, Jul 22, 2020 at 3:00 PM Richard <edelec@...> wrote:

Re pitch yes 0.396875mm but I expect you will have problems. What stepper are you using and how are you driving it?
Best to use Open Office for the moment. We are working to make the Spreadsheet acceptable to both Open Office and Excel.
Richard

On 22/07/2020 18:03, Ralph Hulslander wrote:

Thanks Richard, I was using Excel not Open Office. I do have Open Office so I will try again.

re: " My leadscrew has a 3mm?pitch but is driven 2:1 so is entered as 1.5mm.?"?

I have a 8TPI (3.175) Z leadscrew the stepper motor will have a (motor 8 rpm leadscrew 1 rpm)

re: "

Z Leadscrew Pitch mm

1.5000

If a gear or timing belt drive is used enter the pitch as “seen” by the stepper for one revolution

"

So should I enter 0.396875 (3.175/8) Ralph

On Wed, Jul 22, 2020 at 2:15 AM Richard <edelec@...> wrote:

?I just checked to ensure that the Spreadsheet file was not locked and it is not so I am not sure why you are? not seeing the calculations change after changing the parameters. I did note a single cell error in the spreadsheet which I have fixed. Please download RELS_V3.00i.ods and work with that.

I would suggest you rethink your parameters.
An entry for Z pitch of 3.175mm suggests you have a very large stepper driving the screw. You will see that the entry for pitch is that "seen" by the stepper. In other words after any timing belt reduction if used. My leadscrew has a 3mm
pitch but is driven 2:1 so is entered as 1.5mm.
It is unusual to run your motors at full step.
Your encoder needs to installed with a "step up" belt drive. 800ppr will give poor resolution.
Basically the numbers that you are suggesting will give a very poor setup.
However if just simulating on the bench then no matter. Just check all of the error messages in the spreadsheet. If the message indicates that a thread, feed-rate, or taper is unacceptable a sketch running those derived tables will have un-determinable results!!!!!!!

Good luck
Richard

?

On 21/07/2020 22:29, Ralph Hulslander wrote:

Thanks Richard, I see you uploaded new files. THANKS!!

I started looking at the spreadsheet and really got confused.

I "thought" that if I changed the parameters they would update through the tables but apparently not.

I have 8 TPI 3.175mm

Encoder 800 ppr

Z Stepper steps 200(? might change)

X Stepper steps 200(?)?

I still need to mount the Z & X steppers but thought I would do a desktop simulation.

I can use a PWM module for the spindle encoder pulse.

Actually it is really hot outside so I am able to steal some time to work on ths. I am supposed?to be working

in the garden or doing the hundreds of things I need to finish outside.

You will probably hear a lot of yelling and screaming and cussing and hair pulling.

But thanks again! This will really be so cool to get operating. We need videos of RELS in action.

Ralph

On Tue, Jul 21, 2020 at 3:13 PM Richard <edelec@...> wrote:

Things have moved on! You would be better downloading the following files:-
Manual
Parts
Schematic
And the two RELS-V3 files

Bear in mind that the RELS does not allow feeding or threading at thousands of rpm. However it covers just about all of the threads you might want with the capability of adding more. You can work in metric or imperial. Any taper from parallel to 45 degrees Internal or External. Only 5 buttons plus a reset. Threading can be plunge or 29.5 degrees. Allows for checking the thread at the end of an auto cycle then further cuts if needed. 0 to 3 spring passes can be set in Auto. Threading is performed at constant cut area. Not difficult for a layman to build. Not expensive. Encoder controlled so it can handle speed droops during a threading pass. Arduino Mega based so simple to download. Arduino IDE is required for upload and Open Office required for the spreadsheet file used to generate the parameters for YOUR machine.
Any problems just yell.

Richard

On 21/07/2020 18:56, Ralph Hulslander wrote:

Darn I bet?RELS_Metric_2-32.ino? is the RELS files, duh!

Ralph
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

It is extremely difficult to make recommendations for motors for an ELS system when a few thousnd miles away!
I have no idea of the condition of your lathe. All I can say at the moment is that a 3Nm stepper with a 2:1 drive works well on the Z drive on my Viceroy Lathe. Having checked on the net I feel that a similar setup would probably be OK on your lathe as it looks similar in size. If you have not yet bought the motor then a 4Nm Nema 24 would also be an option, still with a 2:1 drive.
As far as the X axis goes my lead screw has a 2.5mm pitch and I fitted a 1.8Nm stepper direct drive. PSU is 48vDC.
Richard

On 23/07/2020 15:45, Ralph Hulslander wrote:

Richard, I am really leaning towards getting a larger stepper motor for my 8 tpi leadscrew.

I have not mounted the stepper I have.

Do you or anyone have a recommended stepper for the 8 tpi leadscrew?

I would imagine with a larger motor I would direct drive and not use a gear.

I have used in the past.?

I can use the steppers I have when I do my 4x12 mini lathe.

Also I am "thinking" about using the??for my X drive would that work or do I need a larger motor for X as well?

Thanks for all of the help, the heat is letting up so I am headed back outdoors to do those hundred of things I need to do.

Ralph

On Wed, Jul 22, 2020 at 3:18 PM Ralph Hulslander via <rhulslander=[email protected]> wrote:

These are the steppers I have but I could get different ones if I get another stimulus?check.

?

I have thought of getting some NEMA 34 steppers and driving the leadscrew directly.

Ralph?

On Wed, Jul 22, 2020 at 3:00 PM Richard <edelec@...> wrote:

Re pitch yes 0.396875mm but I expect you will have problems. What stepper are you using and how are you driving it?
Best to use Open Office for the moment. We are working to make the Spreadsheet acceptable to both Open Office and Excel.
Richard

On 22/07/2020 18:03, Ralph Hulslander wrote:

Thanks Richard, I was using Excel not Open Office. I do have Open Office so I will try again.

re: " My leadscrew has a 3mm?pitch but is driven 2:1 so is entered as 1.5mm.?"?

I have a 8TPI (3.175) Z leadscrew the stepper motor will have a (motor 8 rpm leadscrew 1 rpm)

re: "

Z Leadscrew Pitch mm

1.5000

If a gear or timing belt drive is used enter the pitch as “seen” by the stepper for one revolution

"

So should I enter 0.396875 (3.175/8) Ralph

On Wed, Jul 22, 2020 at 2:15 AM Richard <edelec@...> wrote:

?I just checked to ensure that the Spreadsheet file was not locked and it is not so I am not sure why you are? not seeing the calculations change after changing the parameters. I did note a single cell error in the spreadsheet which I have fixed. Please download RELS_V3.00i.ods and work with that.

I would suggest you rethink your parameters.
An entry for Z pitch of 3.175mm suggests you have a very large stepper driving the screw. You will see that the entry for pitch is that "seen" by the stepper. In other words after any timing belt reduction if used. My leadscrew has a 3mm
pitch but is driven 2:1 so is entered as 1.5mm.
It is unusual to run your motors at full step.
Your encoder needs to installed with a "step up" belt drive. 800ppr will give poor resolution.
Basically the numbers that you are suggesting will give a very poor setup.
However if just simulating on the bench then no matter. Just check all of the error messages in the spreadsheet. If the message indicates that a thread, feed-rate, or taper is unacceptable a sketch running those derived tables will have un-determinable results!!!!!!!

Good luck
Richard

?

On 21/07/2020 22:29, Ralph Hulslander wrote:

Thanks Richard, I see you uploaded new files. THANKS!!

I started looking at the spreadsheet and really got confused.

I "thought" that if I changed the parameters they would update through the tables but apparently not.

I have 8 TPI 3.175mm

Encoder 800 ppr

Z Stepper steps 200(? might change)

X Stepper steps 200(?)?

I still need to mount the Z & X steppers but thought I would do a desktop simulation.

I can use a PWM module for the spindle encoder pulse.

Actually it is really hot outside so I am able to steal some time to work on ths. I am supposed?to be working

in the garden or doing the hundreds of things I need to finish outside.

You will probably hear a lot of yelling and screaming and cussing and hair pulling.

But thanks again! This will really be so cool to get operating. We need videos of RELS in action.

Ralph

On Tue, Jul 21, 2020 at 3:13 PM Richard <edelec@...> wrote:

Things have moved on! You would be better downloading the following files:-
Manual
Parts
Schematic
And the two RELS-V3 files

Bear in mind that the RELS does not allow feeding or threading at thousands of rpm. However it covers just about all of the threads you might want with the capability of adding more. You can work in metric or imperial. Any taper from parallel to 45 degrees Internal or External. Only 5 buttons plus a reset. Threading can be plunge or 29.5 degrees. Allows for checking the thread at the end of an auto cycle then further cuts if needed. 0 to 3 spring passes can be set in Auto. Threading is performed at constant cut area. Not difficult for a layman to build. Not expensive. Encoder controlled so it can handle speed droops during a threading pass. Arduino Mega based so simple to download. Arduino IDE is required for upload and Open Office required for the spreadsheet file used to generate the parameters for YOUR machine.
Any problems just yell.

Richard

On 21/07/2020 18:56, Ralph Hulslander wrote:

Darn I bet?RELS_Metric_2-32.ino? is the RELS files, duh!

Ralph
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer

--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer