if cutting side on to get a profile see http://www.cambam.co.uk/ free
download but windows (I have seen it cut a gear last year at a show)
the latest release has the involute form but side on means chunky
gears to make room for the endmill
Dave Caroline
---
On Wed, 2009-05-13 at 18:17 +0200, Peter blodow wrote:
> Hello Kirk,
> I wonder how much fuss you guys are making about gear cutting.
... snip
> I managed to buy module 0.5 to 2 sets of 8 cutters each, in beautiful
> wooden boxes, almost unused, from a machine factory which had to move
> out of the
Hello Kirk,
I wonder how much fuss you guys are making about gear cutting.
Small machine (table mill):
Last year I bought a small, but high precision table mill with most of the
gears missing, so I had to make them myself. They are module 0.8. I
bought a set of 8 cutters in ebay from an ukrainian
At 11:11 AM 5/13/2009, you wrote:
>On Wed, 2009-05-13 at 05:29 -0400, Mark Wendt (Contractor) wrote:
>... snip
> > Kurt,
> >
> > Can you read in .dxf's? If you want, you could send me the
> > gear drawings of the gears you're interested in, and I can save them
> > in AutoCad 2003 as dxf's
On Wednesday 13 May 2009, Alpha wrote:
>try this site.
>
>Just type in the gear size and it will make you a cad drawing.
>http://www.rushgears.com/Tech_Tools/PartSearch3/partSearch.php
>
Unforch, the site doesn't like FF newer than 2.00.20, and reports that no
viewer is available for my OS of choi
On Wed, 2009-05-13 at 05:29 -0400, Mark Wendt (Contractor) wrote:
... snip
> Kurt,
>
> Can you read in .dxf's? If you want, you could send me the
> gear drawings of the gears you're interested in, and I can save them
> in AutoCad 2003 as dxf's and send them back to you.
>
> Mark
Tha
On Wed, 2009-05-13 at 09:07 +0100, Dave Caroline wrote:
... snip
> see the g code I posted (in [Emc-users] [OT] Fun with Math thread) for
> 4 axis all it needs is a fly cutter ground to your rack form (near
... snip
> It wont take too much to add the few missing starting points and later
> to amend
try this site.
Just type in the gear size and it will make you a cad drawing.
http://www.rushgears.com/Tech_Tools/PartSearch3/partSearch.php
--
The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your
pro
>
> >Sorry I don't have a .dwg compatible CAD program, so I can't
> view these
> >gear files. From the links I have received, it's turning out
> that it's
> >not that difficult to generate the gear profile ounce you have the
> >pitch diameter and pitch determined, so the drawings might
> not
At 01:23 AM 5/13/2009, you wrote:
>On Wed, 2009-05-13 at 07:24 +1000, Frank Tkalcevic wrote:
> > > On Tue, 2009-05-12 at 15:30 -0400, Douglas Pollard wrote:
> > > > I don't know where to tell you to look but the metric gear info is
> > > > out there somewhere for little or no money.
> > >
> > > I
On Wed, May 13, 2009 at 6:13 AM, Kirk Wallace
wrote:
> On Tue, 2009-05-12 at 22:03 -0500, Stuart Stevenson wrote:
>> Kirk,
>> I have software (FAPT) that will generate the tooth profile using
>> the information out of the machinery's handbook charts. I would be
>> happy to input the data and se
On Tue, 2009-05-12 at 22:22 -0400, Kent A. Reed wrote:
> Gentle persons:
>
> Kirk and others may find the following references to be useful:
>
> 1) "The Involute Curve, Drafting a Gear in CAD and Applications," by
> Nick Carter. http://www.cartertools.com/involute.html
>
> 2) "Direct Gear Desi
On Wed, 2009-05-13 at 07:24 +1000, Frank Tkalcevic wrote:
> > On Tue, 2009-05-12 at 15:30 -0400, Douglas Pollard wrote:
> > > I don't know where to tell you to look but the metric gear info is
> > > out there somewhere for little or no money.
> >
> > I thought you where wrong here because I was
On Tue, 2009-05-12 at 22:03 -0500, Stuart Stevenson wrote:
> Kirk,
>I have software (FAPT) that will generate the tooth profile using
> the information out of the machinery's handbook charts. I would be
> happy to input the data and send you the profile in G-code.
> Stuart
Thank you Stuart. I
Kirk,
I have software (FAPT) that will generate the tooth profile using
the information out of the machinery's handbook charts. I would be
happy to input the data and send you the profile in G-code.
Stuart
On Tue, May 12, 2009 at 9:22 PM, Kent A. Reed wrote:
> Gentle persons:
>
> Kirk and othe
Gentle persons:
Kirk and others may find the following references to be useful:
1) "The Involute Curve, Drafting a Gear in CAD and Applications," by
Nick Carter. http://www.cartertools.com/involute.html
2) "Direct Gear Design for Spur and Helical Involute Gears," by
Alexander L. Kapelevich an
> On Tue, 2009-05-12 at 17:24 -400, Frank Tkalcevic wrote:
>
> > On Tue, 2009-05-12 at 15:30 -0400, Douglas Pollard wrote:
> > > I don't know where to tell you to look but the metric gear info is
> > > out there somewhere for little or no money.
> >
> > I thought you where wrong here because I wa
> On Tue, 2009-05-12 at 15:30 -0400, Douglas Pollard wrote:
> > I don't know where to tell you to look but the metric gear info is
> > out there somewhere for little or no money.
>
> I thought you where wrong here because I was getting nearly
> goose eggs, but I tried Googling "metric gear rack
Kirk,
Are you wanting to develop the CAM algorithms for gear generation
or are you just wanting the G-code for a specific gear profile?
Stuart
On Tue, May 12, 2009 at 3:10 PM, Kirk Wallace
wrote:
> On Tue, 2009-05-12 at 15:30 -0400, Douglas Pollard wrote:
>> I don't know where to tell you to
On Tue, 2009-05-12 at 15:30 -0400, Douglas Pollard wrote:
> I don't know where to tell you to look but the metric gear info is out
> there somewhere for little or no money.
I thought you where wrong here because I was getting nearly goose eggs,
but I tried Googling "metric gear rack profile" and
Kirk Wallace wrote:
> On Tue, 2009-05-12 at 14:21 -0400, Douglas Pollard wrote:
>
>> Kirk Wallace wrote:
>>
>>> On Sat, 2009-05-09 at 11:45 -0700, Kirk Wallace wrote:
>>>
>>>
I would like to make gears, but I need to know the tooth shape in order
> ...snip
>
On Tue, 2009-05-12 at 14:21 -0400, Douglas Pollard wrote:
> Kirk Wallace wrote:
> > On Sat, 2009-05-09 at 11:45 -0700, Kirk Wallace wrote:
> >
> >> I would like to make gears, but I need to know the tooth shape in order
...snip
> My 1974, 19th Edition, Machinerys handbook, has British metric
Kirk Wallace wrote:
> On Sat, 2009-05-09 at 11:45 -0700, Kirk Wallace wrote:
>
>> I would like to make gears, but I need to know the tooth shape in order
>> to make a form tool or cut an outline. This is what I came up with, if
>> there are any mistakes or bad assumptions, please let me know.
>>
On Sat, 2009-05-09 at 11:45 -0700, Kirk Wallace wrote:
> I would like to make gears, but I need to know the tooth shape in order
> to make a form tool or cut an outline. This is what I came up with, if
> there are any mistakes or bad assumptions, please let me know.
>
> I referenced:
> http://en.w
On Mon, 2009-05-11 at 06:05 -0500, Jack Coats wrote:
> I would like to make a rack that matches an involute gear.
>
> I guess we could just put in a radius of a 'very large' number, rather than
> infinity.
>
> The square root radical would evaluate to the square root of 2, but I don't
> know what
just get(calculate or read a table) the circular pitch of the gear and
cut an acme form of that pitch on the rack
the angle is as quoted for the gear you are using, either 14.5 deg or 20
Dave Caroline
On Mon, May 11, 2009 at 12:05 PM, Jack Coats wrote:
> I would like to make a rack that matches
I would like to make a rack that matches an involute gear.
I guess we could just put in a radius of a 'very large' number, rather than
infinity.
The square root radical would evaluate to the square root of 2, but I don't
know what
I would use as the value of alpha.
Suggestions?
IHS ... Jack
O
On Sat, 2009-05-09 at 22:13 +0100, Dave Caroline wrote:
... snip
>
> If you make a generic cgode involute program I would be interested
> seeing it.
>
> Dave Caroline
It's not g-code, but is what I have so far:
http://www.wallacecompany.com/machine_shop/gears/involute_equation-1a.png
(Short URL
>There was some information on the South
> Bend lathe list where a fellow claimed that a perfect
generated tooth
> for can be cut by useing a tap running on the perifery of
a gear blank
> and feeding across the face. The blank is left to
freewheel and be
> pulled around by the tap. He clai
On Sat, May 09, 2009 at 11:22:20PM +0100, Dave Caroline wrote:
> I have a single tooth rack form carbide cutter...I feel this should be
> relatively simple to code as a generic x module x teeth 4 axis.
Involute teeth should be able to be cut with that, if you run many
passes, moving it between pas
I have a single tooth rack form carbide cutter...I feel this should be
relatively simple to code as a generic x module x teeth 4 axis. Hand
grinding the rack form on flycutters will be easy enough and you can
run the gear pairs in after making. The cycle time to make is going to
be a bit slow thoug
On Sat, 2009-05-09 at 17:10 -0400, Douglas Pollard wrote:
> Kirk Wallace wrote:
> > On Sat, 2009-05-09 at 15:07 -0400, John Kasunich wrote:
... snip
> It has been my understanding that the number eight cutter will cut a
> gear with 12 and 13 teeth. If you get below 12 teeth there has to be
> un
On Sat, 2009-05-09 at 22:13 +0100, Dave Caroline wrote:
> Hobbing is easy if you can measure the gear in some way easily, I use
> the OD as my size reference and infeed re run to size, the nice thing
> about a hobbing machine (well the one here anyway) is you can go back
> to the start and still be
Hobbing is easy if you can measure the gear in some way easily, I use
the OD as my size reference and infeed re run to size, the nice thing
about a hobbing machine (well the one here anyway) is you can go back
to the start and still be in gear and run again. As for the use of an
endmill to create t
Kirk Wallace wrote:
> On Sat, 2009-05-09 at 15:07 -0400, John Kasunich wrote:
>
>> Kirk Wallace wrote:
>>
> ... snip
>
>> I assumed the rack
>>
>>> base and top are horizontally midway between the rack center line and
>>> the 20 degree peaks, such that the X length of the rise, flat
On Sat, 2009-05-09 at 15:07 -0400, John Kasunich wrote:
> Kirk Wallace wrote:
... snip
> I assumed the rack
> > base and top are horizontally midway between the rack center line and
> > the 20 degree peaks, such that the X length of the rise, flats and falls
> > are equal. Here is my rack and pitch
Kirk Wallace wrote:
> I would like to make gears, but I need to know the tooth shape in order
> to make a form tool or cut an outline. This is what I came up with, if
> there are any mistakes or bad assumptions, please let me know.
>
I'm no gear expert, but I have a few comments. The only gears I
I would like to make gears, but I need to know the tooth shape in order
to make a form tool or cut an outline. This is what I came up with, if
there are any mistakes or bad assumptions, please let me know.
I referenced:
http://en.wikipedia.org/wiki/Gear
http://en.wikipedia.org/wiki/Involute_gear
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