Date   
Re: Support flange

Richard <2rn@...>
 

Hi Tony,

I agree with Gregg, using the ESX25 collet holder works very nice an accurate clamping within 0.02mm accurate.

‎https://www.emcomachinetools.co.uk/EnterShop/tabid/268/CategoryID/70/List/1/Level/a/ProductID/267/Default.aspx?SortField=UnitCost%2cProductNumber

Fit ER25 ‎collets range 2-16mm, you'll enjoy the clamping accuracy and no marks on the product. 

Best regards, 
Richard

Verzonden vanaf mijn BlackBerry 10-smartphone.
Van: A & J Gregg ajgregg6@... [Emco_cnc_users]
Verzonden: dinsdag 2 september 2014 19:15
Aan: Emco_cnc_users@...
Beantwoorden: Emco_cnc_users@...
Onderwerp: Re: [Emco_cnc_users] Support flange

 

Hi.Tony.

The adapter which you speak of is not used with the main spindle.
Chucks, collet chucks etc., do fit directly on the end of the spindle
with the retaining bolts into the end of the spindle. The adapter is
used to mount on the cross slide or Milling Table to mount those chucks
etc. there on it as if it was the spindle nose. There is a Number 2
Morse taper in the end of the spindle, but it is a non standard one so
you may have to modify the length of the taper to fit. It is many
years since I modified one, and I cannot remember the actual change.

If you want to use collets on the machine, the best way is to use a
collet chuck which fits the end of the spindle with bolts into the end
of the spindle like the main chuck fits. This is probably more accurate.

Jim Gregg

On 9/2/2014 11:39 PM, tonyrapax@... [Emco_cnc_users] wrote:
>
>
> Hello guys!
>
> While trying to put an MT2 collet holder into the main spindle (with no
> result...) in noticed that the support flange seems to be permanently
> attached to the main spindle.
>
> Is it normal? I can't see any screw or other means of taking it apart
> from the lathe even though you can buy a replacement one: Support Flange
>
>
>
> Support Flange
>
>
>
> View on www.emcomachinetools.co.uk
>
>
>
> Preview by Yahoo
>
> Any clue?
>
> I am asking as the arbor in my MT2 collet holder is too tight and don't
> get stuck into the spindle. So I was wondering if removing it I might
> have had access to the tapered spindle...
>
> Ciao!
>
>
>
>




Re: Support flange

A & J Gregg
 

Hi.Tony.

The adapter which you speak of is not used with the main spindle. Chucks, collet chucks etc., do fit directly on the end of the spindle with the retaining bolts into the end of the spindle. The adapter is used to mount on the cross slide or Milling Table to mount those chucks etc. there on it as if it was the spindle nose. There is a Number 2 Morse taper in the end of the spindle, but it is a non standard one so you may have to modify the length of the taper to fit. It is many years since I modified one, and I cannot remember the actual change.

If you want to use collets on the machine, the best way is to use a collet chuck which fits the end of the spindle with bolts into the end of the spindle like the main chuck fits. This is probably more accurate.

Jim Gregg

On 9/2/2014 11:39 PM, tonyrapax@... [Emco_cnc_users] wrote:


Hello guys!

While trying to put an MT2 collet holder into the main spindle (with no
result...) in noticed that the support flange seems to be permanently
attached to the main spindle.

Is it normal? I can't see any screw or other means of taking it apart
from the lathe even though you can buy a replacement one: Support Flange
<https://www.emcomachinetools.co.uk/EnterShop/tabid/268/CategoryID/70/List/1/Level/a/ProductID/400/Default.aspx?SortField=UnitCost%2cProductNumber>


Support Flange
<https://www.emcomachinetools.co.uk/EnterShop/tabid/268/CategoryID/70/List/1/Level/a/ProductID/400/Default.aspx?SortField=UnitCost%2cProductNumber>


View on www.emcomachinetools.co.uk
<https://www.emcomachinetools.co.uk/EnterShop/tabid/268/CategoryID/70/List/1/Level/a/ProductID/400/Default.aspx?SortField=UnitCost%2cProductNumber>


Preview by Yahoo

Any clue?

I am asking as the arbor in my MT2 collet holder is too tight and don't
get stuck into the spindle. So I was wondering if removing it I might
have had access to the tapered spindle...

Ciao!



Support flange

Antonio rapacciuolo
 

Hello guys!

While trying to put an MT2 collet holder into the main spindle (with no result...) in noticed that the support flange seems to be permanently attached to the main spindle.

Is it normal? I can't see any screw or other means of taking it apart from the lathe even though you can buy a replacement one: Support Flange

Any clue?

I am asking as the arbor in my MT2 collet holder is too tight and don't get stuck into the spindle. So I was wondering if removing it I might have had access to the tapered spindle...

Ciao!

 

Re: EMCO F1 CNC (frame+motor+steppers+vice) for sale or trade

fredoavelo
 

Hi do you have some photos of it it, i live in france (61) maybe i'm interested

best regards

Frédéric

Re: EMCO F1 CNC (frame+motor+steppers+vice) for sale or trade

bastiensphoto@...
 

I have looked into it ... i dont have the funds nor the time to do such project.
I also have Compact 5 CNC i might let go if i get a good offer ...


New file uploaded to Emco_cnc_users

Emco_cnc_users@...
 

Hello,


This email message is a notification to let you know that
a file has been uploaded to the Files area of the Emco_cnc_users
group.


File : /stepdrvconverter.asm
Uploaded by : fredoavelo <darc2me@...>
Description : convert 2wires to 4 wires steppermotor controler board with an 8pins PIC


You can access this file at the URL:
https://groups.yahoo.com/neo/groups/Emco_cnc_users/files/stepdrvconverter.asm


To learn more about file sharing for your group, please visit:
https://help.yahoo.com/kb/index?page=content&y=PROD_GRPS&locale=en_US&id=SLN15398


Regards,


fredoavelo <darc2me@...>

Re: Spindle motor repair/replacement?

Geim
 

Could be the brushes, how do the look if you take them out?
Do you want to stick to the DC motor, or are you considering a 3 phase AC replacement with a VFD 
In the latter, you probably need a B14 flanged (small) motor on a type 63 frame, like this one: Elektromotor Drehstrommotor 0,25 kW 3000 U/min B14 klein

Marinus 

 

Spindle motor repair/replacement?

KR Lynn
 

I have a Compact 5 PC with a spindle motor that fairly suddenly sounds like it's going bad. Hard to describe the sound. When I have a machine turned off and turn the spindle in it's normal direction of rotation, there's a repetitive, muffled knock that happens 2-3 times per turn in the same place every time. I don't hear it when I reverse direction. 

Any thoughts?

What are the options for replacing a motor? Is repair a possibility?

Thanks in advance for any replies.

Re: Compact 5 PC lathe

KR Lynn
 

Thanks for the reply. I just saw it. I was scanning emails. I haven't figured out how this group works yet.
Yes, the steppers still moved the right amount, just almost imperceptibly.
I never jog over 19.3 (or thereabouts). It just happens. When I close the program and re-open, all is well again.

Re: ESX25

Antonio rapacciuolo
 

Yes, I did what you described. I spent the entire day taking most of the stuff apart and back together again. Something was loose, it took me 1 hour to tighten the "things" that keep the carriage close to the main rails! The bolts are in a nightmare position!!!! Then I re-tightened the turret but there is a point where if you keep turning the carriage can't move anymore. Why? It shouldn't touch anything else... Moreover, the four screws on the right side of the turret carriage act in a strange way: if I tighten too much the one closer to me the bed can't travel past a certain point while the other three don't make any difference... Anyway, once everything has been put back together everything seems to be much more rigid. Tomorrow I'll try to tighten the 3 bolts that keep the ESX25 in position but I desperately need new and MUCH sturdier ones, mines destroyed under my masculine power in a matter of seconds... :) Do you know of you can buy them in a different and stronger material? I don't trust going any tighter than they are now. Same applies to the rest, is there a supplier of strong screws? Thanks!

Re: ESX25

m.wg@...
 

Do you mean you have reduced the diameter at one end from 30mm to 14,5mm for 30mm length and then mounted that 14.5mm length in the collet with 70mm projecting from the collet ?
If so is the 1mm run-out at the end of the 70mm projection ?
If this is the case IMHO it seems you are going to experience difficulty in rough turning and finishing the brass to your desired shape held only in a collet.
In all cases it is best to check the collet chuck taper for true running with s dial gauge and then using a groundbar (drillstock) in the collet check the bar for run-out with the collet closed tightly.
There are several sources of collet chucks and collets, some seem better than others but you usually only get the accuracy you pay for.

ESX25

Antonio rapacciuolo
 

Hello!
Here's my new issue!
I bough the collet holder/plate, the ESX25, I bought the ER25 Collet set and I today finally prepared 3 brass bars 100mm long and 30 wide making a 30mm long x 14.5 diam portion so that I can hold on it with a 14-15mm collet.
Problem is that it doesn't stay centered, it has about 1mm of X wobbling, how can that be?
Tony

Spindle

Mike mal <mike.mal46@...>
 

How do i connect the standard motor to an electronic relay to run on mach 3 for my compact 5 pc lathe ?

Re: Motor is slipping

Antonio rapacciuolo
 

Fixed it... The bed was full of brass chips.... :)

Re: EMCO F1 CNC (frame+motor+steppers+vice) for sale or trade

Croonen
 

So the best you can do is a retrofit from the machine I have done 3 of that kind machines, and this will be cheaper then to buy a complete new box whit al the parts in it.nand let run it on mach3


2014-08-12 16:50 GMT+02:00 mjeuring@... [Emco_cnc_users] <Emco_cnc_users@...>:

 

Too bad you don't live in Europe, would love to buy such a project :-)


Motor is slipping

Antonio rapacciuolo
 

Now that I have solved all the other problems a new one just surfaced... I noticed it yesterday and at first I thought it was a software one: every now and then the X movements back to zero failed to happen and this led to the following movement to hit on the internal side of the trumpet mouthpiece (the cup). At first I thought it was due to the post processor truncating the trailing zeros. Out of pure chance the failed movements were happening when it was in a position like 3.000 (truncated to 3. ). So I changed the post processor to output "3.000" but then the times it happened increased... Then I realized that this morning I relocated the revolving turret (when I bought it the holes where way out of alignment) thanks to the video I found on YouTube. To add thickness I used a stack of paper until I got to the desired height. Now I'm wondering if for some reasons the paper might have a role in it or if some brass/aluminum/Delrin dust can have slipped in the X axis screw thus preventing the movement from time to time. Any idea? Did it happen to you guys? Thanks!

Re: EMCO F1 CNC (frame+motor+steppers+vice) for sale or trade

Geim
 

Too bad you don't live in Europe, would love to buy such a project :-)

EMCO F1 CNC (frame+motor+steppers+vice) for sale or trade

bastiensphoto@...
 

Hi,

i have an EMCO F1 CNC i need to get red before the winter ... (i don't really have to room for it)

it have the frame the spindle motor, the steppers and the vice, it look in good shape, but all the electronic is missing so i have never turned it on ... 

one picture: http://i61.tinypic.com/wjypok.jpg

I have more picture if needed

i'm not really sure how much its worth ...

im willing to trade it for a small (mini) manual lathe

im locate in California (bay area)

email: bastiensphoto@...

 

Re: Trumpet player needing help!

Antonio rapacciuolo
 

Update: I gave up on trying to make Bobcad understand cutting passes for SPLINES, I just transform the intended path from Archicad (my wife is an architect...) into a Polyline (you can do it by selecting the SPLINEs, clicking of Polyline button and then use the "Magic Wand" to click on the path again) and then export it to a DXF.
Import it into Bobcad and it will be easy to choose the parts you need (be it lines and/or arcs).

I also spent a good 8 hours straight trying to get rid of unwanted circles when exporting with the Mach 3 Post Processor.
The IJ Inc thing worked only for the most obvious circles, to eliminate the rest I had to manually edit the post processor itself.
I made a ton of experiments but now there is NO trace of circles anymore, I didn't keep track of the changes so I may have done something unneeded but if you happen to own a Mach 3 controlled Compact 5 you can count on me if you want my own post processor!
(can I upload it to the group?)

Not bad for a complete newbie on lathes and cad/cam!
:-)


---In Emco_cnc_users@..., <tonyrapax@...> wrote :

Hello!
Thanks for the video!
I think I've seen every video on youtube regarding the Emco machine, there is some NEAT stuff!!!
Here's a due update on what is going on, most of the stuff I have fought with might seem stupid but consider that 10 days ago I had NEVER seen or operated any lathe...
1) The post processor for my retrofitted machine is NOT the Emco, since it has been retrofitted to be controlled by the Mach 3 I have to use a Mach 3 post processor... (2 days to realize that!!!)
2) If you happen to get strange circles instead of arcs when exporting from a CAM to the Mach 3 G Code change the "IJ" parameter to Incremental under general settings.
3) I've found a quick way to zero my tools and to store relative distances from each of them.
4) I've bought a few tools that are a complete set of crap... once I'm more confident on how to make stuff I'll spend some seriuos money...
5) I've ordered the EXS25 adapter plus the collet holder and a complete set of collets
6) I'm haveing a ninja lathe company making me blanks for both the cups and the backbores, already bored with a 3.5mm hole and threaded
7) The same company will make me cylindrical (15mm) "holders" for cups and backbores so that I can screw pieces together to be machined with the Emco according to my designs
8) I made y first cup today using delrin, the side tool and the reamer meeted perfectly on the "hand over" point so I'm super satified!

I still have some minor issues to solve but stuff is going well now!
So I'd like to thank you ALL for the help!

Here's the two main problems I can't solve myself right now, first one is about the D-Bit o reamer: is anyone here able to MAKE a few of them for me? It's mainly a conical one with a SLIGHT parabolic shape. I will have to make 5-10 of them, how much would you guys charge for each of them?
Second thing: is anyone able to teach me how to have an SPLINE correctly cut in Bobcad?
I'm using V24 and the program for some reason wants to cut only an arbitrary part of it...
Thanks!

Re: Trumpet player needing help!

Antonio rapacciuolo
 

Hello!
Thanks for the video!
I think I've seen every video on youtube regarding the Emco machine, there is some NEAT stuff!!!
Here's a due update on what is going on, most of the stuff I have fought with might seem stupid but consider that 10 days ago I had NEVER seen or operated any lathe...
1) The post processor for my retrofitted machine is NOT the Emco, since it has been retrofitted to be controlled by the Mach 3 I have to use a Mach 3 post processor... (2 days to realize that!!!)
2) If you happen to get strange circles instead of arcs when exporting from a CAM to the Mach 3 G Code change the "IJ" parameter to Incremental under general settings.
3) I've found a quick way to zero my tools and to store relative distances from each of them.
4) I've bought a few tools that are a complete set of crap... once I'm more confident on how to make stuff I'll spend some seriuos money...
5) I've ordered the EXS25 adapter plus the collet holder and a complete set of collets
6) I'm haveing a ninja lathe company making me blanks for both the cups and the backbores, already bored with a 3.5mm hole and threaded
7) The same company will make me cylindrical (15mm) "holders" for cups and backbores so that I can screw pieces together to be machined with the Emco according to my designs
8) I made y first cup today using delrin, the side tool and the reamer meeted perfectly on the "hand over" point so I'm super satified!

I still have some minor issues to solve but stuff is going well now!
So I'd like to thank you ALL for the help!

Here's the two main problems I can't solve myself right now, first one is about the D-Bit o reamer: is anyone here able to MAKE a few of them for me? It's mainly a conical one with a SLIGHT parabolic shape. I will have to make 5-10 of them, how much would you guys charge for each of them?
Second thing: is anyone able to teach me how to have an SPLINE correctly cut in Bobcad?
I'm using V24 and the program for some reason wants to cut only an arbitrary part of it...
Thanks!