Date   
Re: Emco 120 Project

Croonen
 

very intresting project the only thing I regret on you project that you still work whit printer poorts I works for my Emco project turing machines whit the LeaveBoy77 controllers it works very good and it works on USB for the tool changer you need a 4 axis controller. I only use this controllers at the moment I have use the most things that there are on the market but about price quailty is this at the moment the best board on the market.



2014-03-09 3:25 GMT+01:00 <jpiazza@...>:

 

I have a Emco120 project I would like to sell. I bought the project thinking I would have time to work on it,but that isn't going to happen. Here is a link for pictures. http://jdpiazza.com/pages/Emco120/Emco120.html
If you have an interest leave a message
Thanks.


Emco 120 Project

highcompression2000
 

I have a Emco120 project I would like to sell. I bought the project thinking I would have time to work on it,but that isn't going to happen. Here is a link for pictures. http://jdpiazza.com/pages/Emco120/Emco120.html
If you have an interest leave a message
Thanks.

Re: Emco compact 5 PC Shipping weight

Myron Angeloff
 

The weight is over 100Lbs. Don't know exactly.


On Wed, Mar 5, 2014 at 8:51 AM, <tuce233@...> wrote:
 

Thanks for the info Myron that helps out a lot just need to find out the units weight and will be ready to get it shipped.

Thanks again for the help,

Steve


Re: Emco compact 5 PC Shipping weight

tuce233@...
 

Thanks for the info Myron that helps out a lot just need to find out the units weight and will be ready to get it shipped.

Thanks again for the help,

Steve

Re: Emco compact 5 PC Shipping weight

Myron Angeloff
 

Hi

Dimensions for Compact 5 PC:

Length - 27"

Height - 10"

Deep - 24"

Regards
Myron


On Tue, Mar 4, 2014 at 8:19 PM, <tuce233@...> wrote:
 



 


Hi, I'm new here and new to CNC. I just purchased a emco compact 5 PC and was wondering if anyone could tell me the weight, how deep the unit is along with the length and Height so I can have it shipped.


 Thanks,

Steve



Emco compact 5 PC Shipping weight

tuce233@...
 



 


Hi, I'm new here and new to CNC. I just purchased a emco compact 5 PC and was wondering if anyone could tell me the weight, how deep the unit is along with the length and Height so I can have it shipped.


 Thanks,

Steve


Re: Help with code for compact 5 cnc

m.wg@...
 

Hi Mark
I converted the program to mm and it functioned OK.

If you check in the Photos there are some pics showing the Emco standard tool post on a C5 lathe. There are 2 types, 1 has a central dovetail to secure in the block and the other an offset dovetail, both blocks are the same size but obviously the tool holders are not interchangeable.
Size of the block is 55mm square and 40mm high, there are 2 ground Vee's to accurately locate the toolholder so tool offsets remain constant between changes.
The block is mounted by a single M12 skt cap bolt to a 10mm thick plate which measures 60x80mm that is secured to the crosslide using the same fixings as the Auto tool turret with 4 M5x16 setscrews. 
For external threading I use a 12mm square Toolholder with replaceable tips but also have used carbide tipped tools on various size shanks.
For internal threads I use a selection of ground round section HSS for the smaller sizes, carbide tipped for larger and deeper bores., always try for the best rigid set-up and take very small cuts per pass, always use "springing cut" passes on internal threads as you do when boring.
The above statement is true for the Tool turret also, you can split any bushes you use to accommodate round tools in the turret socket, make sure the split is at 90 degrees to the tool securing screws before tightening then the split bush will clamp the tool securely. You may have to reduce the wall thickness on thick walled bushes by partly cutting lengthwise through the wall opposite the slit to allow closure.
Looks like you will have fun doing those fin cuts, .031" is going to be a delicate tool. All I can suggest is you grind the tools from square HSS stock leaving as much material below the tip as possible, grind the minimum length at .031" and only use a touch of clearance angles, top rake (7-10 deg ?) will help to form a nicely coiled swarf especially if kept lubricated. Set the tool at exact centre but if that doesn't work you may find better results with the tool a few thou below centre. Take some trial runs with the same material before putting your cylinders to the test, for starters infeed at 10mm/min using 200 rpm. Suggest you use G95 in case the tool jams, gives you the chance to manually back off.
Keep us informed reference feed rate and spindle speeds you finally use for cutting the fins.

Regards, Marcus

Re: Help with code for compact 5 cnc

mastuart1@...
 

Thanks Marcus for your help.    I got the program to work and just juggle the numbers some and got a part made to correct size.   I think I understand now what the problem was. It looks like some of the number of the diameter the program cant divide in half when it changes it to radius.     My machine has not been used in a

while and has developed a problem with the turret rotation.    I think I am going to take the motor off temporarily

and make a shaft and hand wheel to operate the tool changer until I can fix the control board. 

 I have another question or two .    Can I take my tool changer off and will a tool post like you have bolt on?

Do you know what kind of tools others are using to do internal threading and boring with the tool changer? 

Are they using round boring bars and threading tool mounted in the round holes in the turret?   If so where are they getting the tools that are the right diameter so you don't have to use adaptor bushings.   

One more question.  Are you using yours to do any cylinder finning?   I need to do 24 cylinders with 15 slots .031 wide .125 deep.    If so do you have any suggestion of  rpm for 1.375 dia leaded steel and what feed per rev.     

 

Thanks again Mark

Emco CNC 5 help needed

rthoracing
 

I have a CNC 5 that's been running great for years.
But now I have a problem I have not been able to solve.
The computer freezes & both axis motors stop moving during automatic cycle.
The display stops moving on the current command line.
No alarm or message.
Spindle continues to run & display speed.
It's just like a "Feed Hold" was pressed.
Machine has a tool changer, spindle relay & a video display. 

At first the problem only happened occasionally.
Now It happens almost every cycle.
I know very little about electronics.
Any and all help would be appreciated.

Thank you,

Rick


Re: Yahoo Group page layout changes

m.wg@...
 

Hi Henk, thanks for the tip, now using a Bookmark link for each group, at least don't have to keep changing options when getting the group page, straight to the messages in Slim view.
Rgds, Marcus

Re: Compact 5 CNC - Mach3 conversion

sam
 

I think I will go the same way for the spindle drive, thanks.

Does any body know if the timing pulley and belt are 2mm or .080". I am replacing the steppers and the new ones have 8mm shafts, too big to use the pulley from the old stepper and I do not want to turn them down.
Thanks
Sam

Re: Yahoo Group page layout changes

Henk Verschuren
 

Hi Marcus,

I use this link in my favorites to go directly to the messages:
https://groups.yahoo.com/neo/groups/Emco_cnc_users/conversations/messages

Regards,
Henk

Yahoo Group page layout changes

m.wg@...
 

Hi All, 

Can anyone inform me how to change the page view on Group pages ? 
I prefer SLIM view for messages so to reduce the crap adverts, have to change this on every visit to any of the groups I belong to.
Also now the messages don't appear until you click CONVERSATIONS, this is all a PITA doing it on all groups every visit, perhaps Yahoo want to stop people viewing so often, they are certain to succeed with me.

Thanks, Marcus

Re: Help needed. How to rebuild ball screw

Dan Groot <dan@...>
 


There is a guy on ebay that I got newer emco ball nuts and screws from.He's a reputable guy.I could send you his contact info if you want, I tried the same thing you did and got the same results.

----- Original Message -----
Sent: Saturday, February 22, 2014 8:22 AM
Subject: Re: [Emco_cnc_users] Re: Help needed. How to rebuild ball screw

I finally managed to get the balls in, but I think I lost a few. I will never do this exercise in frustration again. It seems to turn easily with no play, but I'll know for sure when it is in place and working. Thanks for all the comments.

Re: Compact 5 CNC - Mach3 conversion

Croonen
 

hello I have done retrofit whit 5 Emco machines on Mach3 and I am busy whit the 6 one I always let stay the DC spindelmotors on it but I make a small modification on the spindelboard and I put a small pcb in that I have made for to control the DC spindel motor whit Mach3 are another program but you have to put a PWm signal in the small PCB board so I can change the speed in the spindel from 400 till 4000 rpm.
The old stepmotors for that I place new in it and new power supply whit a LeaveBoy 77 USB controller.
The only thing that is not so stable on the Leaveboy 77 card is the speed masseurment.

it si not a problem to separte the DC  spindel board from the rest of the elektronics.

greetings Benny


2014-02-22 15:48 GMT+01:00 <westmount_sam@...>:

 

I dismantled my new to me compact 5, cleaned up years worth of rust and junk, and put it back together. Everything is smooth and tight now. This lathe had seen very little use in a school, with practically no wear. The DC motor runs fine and the spindle rotation is smooth, but that is the only electrical part working. The speed indication remains on zero and although the lights come on, the steppers are not getting any power. In any case my original intent was to scrap all the cnc parts including the steppers, and do a clean install with mach3.
I have a couple of questions:
1- Should I keep the DC drive, is it easy to separate from the rest of the electrics.
2- I guess many have gone this way before me, I would appreciate links to good write ups of the conversions.

Thanks.


Compact 5 CNC - Mach3 conversion

sam
 

I dismantled my new to me compact 5, cleaned up years worth of rust and junk, and put it back together. Everything is smooth and tight now. This lathe had seen very little use in a school, with practically no wear. The DC motor runs fine and the spindle rotation is smooth, but that is the only electrical part working. The speed indication remains on zero and although the lights come on, the steppers are not getting any power. In any case my original intent was to scrap all the cnc parts including the steppers, and do a clean install with mach3.
I have a couple of questions:
1- Should I keep the DC drive, is it easy to separate from the rest of the electrics.
2- I guess many have gone this way before me, I would appreciate links to good write ups of the conversions.

Thanks.

Re: Help needed. How to rebuild ball screw

sam
 

I finally managed to get the balls in, but I think I lost a few. I will never do this exercise in frustration again. It seems to turn easily with no play, but I'll know for sure when it is in place and working. Thanks for all the comments.

Re: Help needed. How to rebuild ball screw

nitewatchman5
 

If the balls are a problem you may also work on the ball screw with it inside a plastic bag.
 
This trick works especially well with AR-15 Detent Pins.
 
nitewatchman

From: Ferris Uy
To: "Emco_cnc_users@..."
Sent: Friday, February 21, 2014 1:40 PM
Subject: [Emco_cnc_users] Re: Help needed. How to rebuild ball screw
 
I have rebuilt the ball screws before. After taking it apart, I removed the bearings (over a container to avoid losing any of them) and soaked them in WD40 for a few minutes. The bearings were then dried on a piece of tissue. I then proceeded to clean out the dried grease in the ball screw housing with a round brush dipped in WD40. After this, I wiped the screw threads dry.

In rebuilding the ball screw, I took some grease and wiped it on the threads within the ball screw housing. The tiny bearings will stick to the grease as you replace each one on the thread. (NOTE: There are 2 small pins that are embedded near both ends of the thread inside the ball screw housing. You will need to make sure the small bearings are installed between these 2 pins, or they will fall out). After all the bearings are installed on the thread, carefully screw on the leadscrew. It may take you a few tries to ensure that no bearings pop out of the stopper pins as you replace the leadscrew. But, with some patience you should be able to complete rebuilding the ball screw. Btw, with the bearings covered in new grease, they don't bounce off far from where you are working. Hope this helps.

Re: Help needed. How to rebuild ball screw

Ferris Uy
 

I have rebuilt the ball screws before. After taking it apart, I removed the bearings (over a container to avoid losing any of them) and soaked them in WD40 for a few minutes. The bearings were then dried on a piece of tissue. I then proceeded to clean out the dried grease in the ball screw housing with a round brush dipped in WD40. After this, I wiped the screw threads dry.

In rebuilding the ball screw, I took some grease and wiped it on the threads within the ball screw housing. The tiny bearings will stick to the grease as you replace each one on the thread. (NOTE: There are 2 small pins that are embedded near both ends of the thread inside the ball screw housing. You will need to make sure the small bearings are installed between these 2 pins, or they will fall out). After all the bearings are installed on the thread, carefully screw on the leadscrew. It may take you a few tries to ensure that no bearings pop out of the stopper pins as you replace the leadscrew. But, with some patience you should be able to complete rebuilding the ball screw. Btw, with the bearings covered in new grease, they don't bounce off far from where you are working. Hope this helps.

Re: Selling 2 stepper motors, 1 spindle motor and compelte electronic with video out/rs232

eric warner
 

Daniel -
I might be interested in this.  I have two of the Compact 5 CNC lathes and they generally work very well, however every once in a while they have a hicup and I'm thinking that having a spare set of parts to repair/replace the electronics would be a good idea.  I didn't see an e-mail address to contact you off the list so I figured I would contact you here.

Thanks,
Eric