Re: [CAD_CAM_EDM_DRO] Re: Lathe threading

Hi Dan,

The tool has a radius end which is not greater than the radius of the
minimum diameter of the thread. The control program knows the size of the
tool and the control program does the rest. What seems to happen is the tool
only cuts on the radius part and the thread is produced by multi-pass
contouring.

I can't check this for you, as the controller has just let some smoke out,
but I could scan the pages from the manual if you require.

Regards,

Terry

----- Original Message -----
From: "Dan Mauch" <dmauch@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, July 01, 2002 5:23 PM
Subject: RE: [CAD_CAM_EDM_DRO] Re: Lathe threading


|
| Hmm I can see how you can use a cutter with less than 60 degree included
| angle if the tool is positions so that one side is parallel to the 30
| degree side of the thread but then this would leave the other side and
| an incorrect angle. Can you provide more details on how this 35 degree
| cutter is set up and used for 60 degree threads?
| Dan
| -----Original Message-----
| From: James Owens [mailto:wotisname@...]
|
| Hi,
|
|
| In CNC mode the machine uses a one bit encoder mounted on the spindle
| and
| provided a cutting tool with less than the included angle of the thread
| is
| used a perfect thread is formed. e.g if the thread is a 60 degree
| included
| angle a tool of less than 50 degrees can be used to cut the thread. I
| use a
| 35 degree tool because this is included in the tool list and I haven't
| worked out how to program different tools yet.
|
| Regards,
|
| Terry
|
|
|
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| OFF Topic POSTS: General Machining
| If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
| http://www.metalworking.com/news_servers.html
|
| http://groups.yahoo.com/group/jobshophomeshop I consider this as a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
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