Woodturner's Resource
Woodturner's Resource  
  • Featured Artist    • Websites   Support Wr
Tutorials, Projects & Tips   • Event Calendar   • Tool and Book Store
  Home Page Forum HelpSearch Map TPT Resources LoginRegister
 
Page Index Toggle Pages: 1
Send Topic Print
Stuck Live Center (Read 327 times)
 
Steve Doerr
WR Addict
*****
Offline


Wood is one of God's hidden /> /> canvases.

Posts: 779

Joplin, Missouri, USA
Joplin
Missouri
USA

Gender: male

Rikon 70-050VS
Jet 1642 EVS 2HP
Robust American Beauty
Stuck Live Center
Dec 10th, 2017 at 1:35pm
 
I recently purchased a morse taper adapter to use in my tail stock when using my Oneway Coring System.  I used it the other day for the first time and now my live center is stuck in the adapter.  The adapter has a slot designed to assist in getting the live center out, the problem is, the shaft on the live center does not extend down into the opening.  I've tried to use a screw driver and hammer to knock the live center out, but have had no success.  Any suggestions or ideas would be greatly appreciated. (It's the live center my wife usually uses  Embarrassed)
Back to top
  
WWW  
IP Logged
 
George Hurlburt
WR Champion
*****
Offline


WR Rocks!

Posts: 140

El Dorado, KS, Kansas, USA
El Dorado, KS
Kansas
USA

Gender: male

Robust, Vicmarc 175 and Nova DVR
Re: Stuck Live Center
Reply #1 - Dec 10th, 2017 at 1:56pm
 
I use a brass rod to knock out tail centers. A photo might help here. I don't know whether a squirt of liquid wrench or such would help? Other extreme ideas ice or hot air dryer gun.
Back to top
  
George Hurlburt  
IP Logged
 
Ed Weber
WR Administrator
WR Patron
*****
Offline



Posts: 5,295

Wilton, California, USA
Wilton
California
USA

Gender: male

JET 1642
Grizzly G0584
Re: Stuck Live Center
Reply #2 - Dec 10th, 2017 at 2:02pm
 
Well George took the words right out of my mouth.
Quit hammering screwdrivers and I think we could use some photos.

What adapter?
What live center?
Back to top
  
 
IP Logged
 
Bill Moschler
Full Member
**
Offline


WR Rocks!

Posts: 89

Knoxville, Tennessee, USA
Knoxville
Tennessee
USA

Gender: male
Re: Stuck Live Center
Reply #3 - Dec 10th, 2017 at 7:43pm
 
I am guessing that there is no through hole in the adaptor through which to insert a rod to drive it out along the axis?  The slot sounds like you would use a wedge to drive the adaptor out.  But the wedge would not hit the end of the center because it does not reach the slot?  Maybe a steel bearing the right diameter dropped in the hole behind the center? Or several of them.  Then you need to find a drift key the correct size.  Or 2 of them.  As you drive the key in the slot it pushes the center out.

If it is a good adaptor and it works well like this I think just to leave it in there and order a new center would be the best overall solution instead of tearing something up.  You do not want to have to take this in and out regularly anyway.

Another solution might be to saw the adaptor in half at the slot and drive the center out.  Then order a center the correct size without the adaptor if such exists.


From McMaster Carr catalog:

Morse Taper-Mount
Shank Removal Tools

Separate Morse taper shank cutting tools from machinery spindles and Morse taper adapters. These tools are also known as drill drifts or drift keys. To use, simply insert the removal tool into the spindle slot and tap with a hammer to release the cutting tool.

For Morse
Taper Number      Lg.      Material            Each
1      4 1/2"      Steel      2796A11      $9.29
2      5 3/4"      Steel      2796A12      10.55
3      7 7/8"      Steel      2796A13      11.78
4, 5      9 1/4"      Steel      2796A24      16.29
Back to top
« Last Edit: Dec 10th, 2017 at 9:28pm by Bill Moschler »  
 
IP Logged
 
Don Stephan
WR Addict
*****
Offline


WR Rocks!

Posts: 1,691

Cincinnati, Ohio, Ohio, USA
Cincinnati, Ohio
Ohio
USA

Gender: male
Re: Stuck Live Center
Reply #4 - Dec 10th, 2017 at 7:55pm
 
Can you slip metal washers in the slot to pad out the live center shaft until the washers are beyond the slot, and then drive the live center out?
Back to top
  
WWW  
IP Logged
 
Steve Doerr
WR Addict
*****
Offline


Wood is one of God's hidden /> /> canvases.

Posts: 779

Joplin, Missouri, USA
Joplin
Missouri
USA

Gender: male

Rikon 70-050VS
Jet 1642 EVS 2HP
Robust American Beauty
Re: Stuck Live Center
Reply #5 - Dec 10th, 2017 at 10:53pm
 
Thanks everyone for your ideas and input.  I have attached a picture so you can see what I was talking about.

I have solved the problem by using a crescent wrench as a wedge between the live center and the adapter.  I took a hammer and tapped the wrench handle lightly until it came out.  To prevent this from happening in the future, I'll us a bolt with a nut to extend the length of the live center so that I can use a wedge to pop out the live center.
Back to top
  
WWW  
IP Logged
 
Ed Weber
WR Administrator
WR Patron
*****
Offline



Posts: 5,295

Wilton, California, USA
Wilton
California
USA

Gender: male

JET 1642
Grizzly G0584
Re: Stuck Live Center
Reply #6 - Dec 11th, 2017 at 10:44am
 
That's a tricky task indeed, with no good way or where to clamp securely and limited access to the striking area without risking damage you did well to remove it  Thumbs Up
In my shop if presented with the same situation I probably would have resorted to using a pickle-fork.
Back to top
  
 
IP Logged
 
Grant Wilkinson
Senior Member
****
Offline



Posts: 494

Ottawa, Ontario, Canada
Ottawa
Ontario
Canada

Re: Stuck Live Center
Reply #7 - Dec 11th, 2017 at 11:15am
 
I have a live centre extender similar to yours. Your idea of extending the length of the centre's morse taper will work well. I do exactly that when I need to use the extender.
Back to top
  

Grant Wilkinson
Ottawa ON
 
IP Logged
 
Len Mullin
Active Member
***
Offline


WR Rocks!

Posts: 140

Miramichi, New Brunswick, Canada
Miramichi
New Brunswick
Canada

Re: Stuck Live Center
Reply #8 - Dec 11th, 2017 at 8:49pm
 
Steve, I mentioned this on another site, But I'm going to mention it here in case not everyone here visits the other site. I suggested that a ball-joint fork might work, it would work similar to what you used.
Len
Back to top
  
 
IP Logged
 
Ed Weber
WR Administrator
WR Patron
*****
Offline



Posts: 5,295

Wilton, California, USA
Wilton
California
USA

Gender: male

JET 1642
Grizzly G0584
Re: Stuck Live Center
Reply #9 - Dec 11th, 2017 at 10:53pm
 
Len Mullin wrote on Dec 11th, 2017 at 8:49pm:
I suggested that a ball-joint fork might work


Ed Weber wrote on Dec 11th, 2017 at 10:44am:
In my shop if presented with the same situation I probably would have resorted to using a pickle-fork.


Multimedia File Viewing and Clickable Links are available for Registered Members only!!  You need to Login or Register
Back to top
  
 
IP Logged
 
Page Index Toggle Pages: 1
Send Topic Print