Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Kathy
 
Posts: n/a
Default Spindle rebore/grind for a Denbigh horizontal


wrote in message
...
You could buy another machine for $50 to $100 in this machinery market.


That's what I would do.


  #2   Report Post  
PrecisionMachinist
 
Posts: n/a
Default Spindle rebore/grind for a Denbigh horizontal


"Kathy" wrote in message
...

wrote in message
...
You could buy another machine for $50 to $100 in this machinery market.


That's what I would do.


Yabut shipping and rigging might cost some $$$......It often costs money
just to get rid of old machinery, depending on the disposal method
chosen....And it always takes time, that could be better spent on liesure or
in doing something more profitable..........

I would try and hone/ lap it out first........Grind any big raised
wooleybuggers out by hand with a die grinder then use an old toolshank as a
lap/ checking gage........

Never hurts to become proficient with a die grinder, and in this instance
its unlikely to cause the situation to worsen........

--

SVL



  #3   Report Post  
 
Posts: n/a
Default Spindle rebore/grind for a Denbigh horizontal

You could buy another machine for $50 to $100 in this machinery market.

Wendell
"Robin S." wrote in message
om...
My boss bought an older horizontal milling machine (manual) to run a
rework job on some products we sell.

The machine is a Denbigh C-type mill with a MT4 spindle.

The original owner must have stalled the cutter/arbor several times as
the arbors and the spindle taper are heavily scored (doh!). The runout
with the supplied arbors is unacceptable, somewhere around .020" TIR.

So, we need to have a new taper created in the spindle. There are some
options:

-Have a company come in and turn/grind the taper. This would create
another MT4 spindle which is a bit of a pain as finding MT4 horizontal
arbors is a pain and I'm not sure I have the time to make another
(although I can use a MT4 milling arbor and turn a shaft to fit).

-Have a company come in and turn/grind the spindle to a NS40 which
makes tooling easily available, although we may have some issues
(serious issues) using the supplied vertical head. Also, not sure if
there's enough meat to create an NS40 taper in the spindle.

-I could create a fixture to hold a grinding spindle/boring tool and
regrind/bore the spindle myself. This method is time intensive and
could turn out to be very expensive.

-Buy an MT4 reamer and do it that way. I'm concerned that the taper is
so chewed that a reamer would catch and gouge the spindle (they we're
more fudged than before) or that the spindle will be too hard.

So, does anyone know of a company in/around Toronto that can
grind/bore spindles on machines (I don't want to remove the spindle).
Also, any ideas on how much this will cost?

Thanks for any thoughts.

Regards,

Robin



  #4   Report Post  
Robin S.
 
Posts: n/a
Default Spindle rebore/grind for a Denbigh horizontal


wrote in message
...
You could buy another machine for $50 to $100 in this machinery market.


Poopie on that. It was bought for about $300 Cnd. Rigging and a (1) cutter
cost more than that. I don't think my boss has the time to look for another.

SVL, never thought of lapping with another tool shank. Good idea. I don't
think I can get it to original, but it'll probably be better than it is
right now.

Regards,

Robin


Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bent Spindle? Paul Weber Metalworking 8 August 26th 03 01:41 PM
Curious micrometer design Eide Metalworking 9 August 8th 03 01:49 PM


All times are GMT +1. The time now is 06:01 PM.

Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2004-2024 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"