On Fri, 24 Jul 2020 at 22:26, Matthew Herd wrote:
> In your second video you mention that the step generator for the rotary axis
> is tied to the spindle motion. What HAL pins need to be connected? Do you
> have an interface with a selectable ratio or do you just change the ratio in
> the
Hi Andy,
In your second video you mention that the step generator for the rotary axis is
tied to the spindle motion. What HAL pins need to be connected? Do you have
an interface with a selectable ratio or do you just change the ratio in the HAL
file?
Matt
> On Jul 24, 2020, at 5:17 PM,
On Fri, 24 Jul 2020 at 21:43, andrew beck wrote:
> How hard is it to set up the hobbing and is it something I can just change
> in and out as needed. My cnc mill would be perfect.
Yes, my milling machine can be a vertical mill, a horizontal mill or a
gear hobbing machine depending only on
Hey Andy I like it.
How hard is it to set up the hobbing and is it something I can just change
in and out as needed. My cnc mill would be perfect.
On Sat, Jul 25, 2020, 4:42 AM Chris Albertson
wrote:
> On Fri, Jul 24, 2020 at 9:01 AM Jon Elson wrote:
>
> > On 07/24/2020 02:09 AM, andrew beck
On Fri, Jul 24, 2020 at 9:01 AM Jon Elson wrote:
> On 07/24/2020 02:09 AM, andrew beck wrote:
> > Greg can you educate me on what what gear cutters are enough for most
> gear
> > cutting needs?
I think the answer depends on if you are a job-shop accepting any and all
orders from customers or
> From: andy pugh [mailto:bodge...@gmail.com]
> On Fri, 24 Jul 2020 at 12:14, Gene Heskett wrote:
>
> > > Did my list of suppliers of involute gear cutters make it to the list?
> > > The conversation continued round it as if the question remained
> > > unanswered.
> >
> > I don't recall seeing
On 07/24/2020 02:09 AM, andrew beck wrote:
Greg can you educate me on what what gear cutters are enough for most gear
cutting needs? Fusion 360 has a nice gear profile generator I can use.
But I'll have to model all the cutters after that I think... Thinking keep
them pretty simple with no
On Fri, 24 Jul 2020 at 14:58, Matthew Herd wrote:
> Let’s say I were to purchase a hob like this one:
>
> https://www.ebay.com/itm/DP16-PA14-5-Gear-Hob-Cutter/302306779664
>
> How do I determine the lead angle?
It is always engraved on the hob.
--
atp
"A motorcycle is a bicycle with a
Hi Andy,
Let’s say I were to purchase a hob like this one:
On Fri, 24 Jul 2020 at 12:23, andrew beck wrote:
>
> Oops sorry Andy yep I missed it. Just had a look now. Sounds like I need
> to set up one of my cnc mills as a gear hobber
Those are zero-lead profiled cutters. You can use those on any mill
(or lathe, in many cases)
You can also use the
On Friday 24 July 2020 07:17:36 andy pugh wrote:
> On Fri, 24 Jul 2020 at 12:14, Gene Heskett
wrote:
> > > Did my list of suppliers of involute gear cutters make it to the
> > > list? The conversation continued round it as if the question
> > > remained unanswered.
> >
> > I don't recall seeing
Oops sorry Andy yep I missed it. Just had a look now. Sounds like I need
to set up one of my cnc mills as a gear hobber
On Fri, Jul 24, 2020, 8:30 PM andy pugh wrote:
> On Fri, 24 Jul 2020 at 08:33, Gregg Eshelman via Emc-users
> wrote:
> >
> > For gear cutting every pitch or module has
On Fri, 24 Jul 2020 at 12:14, Gene Heskett wrote:
> > Did my list of suppliers of involute gear cutters make it to the list?
> > The conversation continued round it as if the question remained
> > unanswered.
>
> I don't recall seeing it Andy.
https://www.amazon.com/s?k=involute+gear+cutter
On Friday 24 July 2020 04:26:47 andy pugh wrote:
> On Fri, 24 Jul 2020 at 08:33, Gregg Eshelman via Emc-users
>
> wrote:
> > For gear cutting every pitch or module has either one hob that cuts
> > any number of teeth, which requires a machine able to synchronize
> > rotation of the hob and
On Fri, 24 Jul 2020 at 08:33, Gregg Eshelman via Emc-users
wrote:
>
> For gear cutting every pitch or module has either one hob that cuts any
> number of teeth, which requires a machine able to synchronize rotation of the
> hob and blank, or a set of 8 different single tooth cutters, each of
For gear cutting every pitch or module has either one hob that cuts any number
of teeth, which requires a machine able to synchronize rotation of the hob and
blank, or a set of 8 different single tooth cutters, each of them marked with a
range of the number of teeth on a gear they're suitable
Greg can you educate me on what what gear cutters are enough for most gear
cutting needs? Fusion 360 has a nice gear profile generator I can use.
But I'll have to model all the cutters after that I think... Thinking keep
them pretty simple with no helix angle or anything. And maybe plan to cut
Gear tooth shaped end mills would be real handy in many situations, especially
where you need two different sized spur gears on one part, and the smaller one
is too close to the larger one for any conventional sort of rotating gear tooth
cutting tool. In olden times those had to be cut with a
Could get the same effect as cutting teeth with a multi tooth straight hob. As
the gear is turned, the involute curves are formed as a series of facets. With
a 4th axis under CNC control you can have as many facets as you want. After
milling I'd want to run gears together for a bit with some
On Thursday 23 July 2020 19:56:37 andrew beck wrote:
> Hey Gene depends on size. And there are often MOQ or 10 pics. We
> just try work it out between us.
>
> Price wise 12mm cutter might be 25 usd.
>
> Small 5mm cutter might cost 8usd.
>
> Off the shelf 6mm endmills for stainless steel.
On Thursday 23 July 2020 19:02:47 Chris Albertson wrote:
> Gene,
>
> Better to just use a standard (replaceable at a reasonable cost) ball
> mill and let your CAM software generate the toolpath. No math
> involved.
Yes there is. I know very llittle about CAM so I'd have to write my own.
And
Hey Gene depends on size. And there are often MOQ or 10 pics. We just try
work it out between us.
Price wise 12mm cutter might be 25 usd.
Small 5mm cutter might cost 8usd.
Off the shelf 6mm endmills for stainless steel. (they are really good
quality. Almost as good as a sandvic one). Cost
Gene,
Better to just use a standard (replaceable at a reasonable cost) ball mill
and let your CAM software generate the toolpath. No math involved.
If I am making gears I'd not want to have to depend on a steady supply of
hen's teeth. If your part depends on one-off tooling you might never be
I hope to be able to do the same but on a MUCH smaller mill. I think you
can even cut helical bevel gears this same way.
One thing, I think this would go faster if you made the first pass with a
larger end mill that could cut faster then do the finish pass using the
tiny end mill.
On Wed, Jul
On Thursday 23 July 2020 16:04:46 andrew beck wrote:
> Gene I can get. Custom shaped endmills made in china easy as which is
> what I will probably do soon. I might just get some gear tooth shaped
> endmills made.. I get custom tools all the time for my tooling
> company Regards
>
> Andrew
>
Gene I can get. Custom shaped endmills made in china easy as which is what
I will probably do soon. I might just get some gear tooth shaped endmills
made.. I get custom tools all the time for my tooling company
Regards
Andrew
On Thu, Jul 23, 2020, 11:27 PM Gene Heskett wrote:
> On Thursday
On Thu, 23 Jul 2020 at 12:27, Gene Heskett wrote:
> I have spent considerable
> time looking for shaped tools/mills for such gear cutting and either
> didn't recognize it from the description or came up empty.
https://www.amazon.com/s?k=involute+gear+cutter
On Thursday 23 July 2020 06:33:08 Matthew Herd wrote:
> That’s a fascinating idea. I was pondering CNC’ing my shaper, but a
> fourth axis would be much easier. Even if you don’t have a conical
> tool bit. Albeit the surface finish might be a little rougher, it
> should work well enough for
That’s a fascinating idea. I was pondering CNC’ing my shaper, but a fourth
axis would be much easier. Even if you don’t have a conical tool bit. Albeit
the surface finish might be a little rougher, it should work well enough for
most applications.
> On Jul 23, 2020, at 6:20 AM, andy pugh
On Thu, 23 Jul 2020 at 03:41, andrew beck wrote:
> https://youtu.be/3u1bZxd-KCk
With a 4th axis (which I realise you don't have) you would be able to
generate a tooth form using the flank of the cutter in just the same
way as you can with a shaper.
(Ideally you would use a conical tool bit
Great work! Seems like a nice way to maek a gear if you’re patient.
> On Jul 22, 2020, at 10:39 PM, andrew beck wrote:
>
> Hey everyone just a quick video here. Might interest people.
>
> https://youtu.be/3u1bZxd-KCk
>
> Regards
>
> Andrew
>
>
Hey everyone just a quick video here. Might interest people.
https://youtu.be/3u1bZxd-KCk
Regards
Andrew
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