Re: [Emc-users] Thing with a square hole

Those are really nice. I have some harmonic drives from a robot. I have always thought I have enough structure left over from the robot to make a 4th axis, but I really like your casting. They have mating DC motors and the pinout is right there on the motor. There used to be a foundry fairly

Re: [Emc-users] Thing with a square hole

On 24 May 2017 at 09:13, Marcus Bowman wrote: > Which foundry did you use? AJD in Brierley Hill. He seems happiest doing one-offs. https://plus.google.com/117843202793672038457 -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed

Re: [Emc-users] Thing with a square hole

Thanks for sharing your work. It looks really nice and professional. You are ambitious. On May 24, 2017 3:20 AM, "Marcus Bowman" < marcus.bow...@visible.eclipse.co.uk> wrote: > > On 24 May 2017, at 08:29, andy pugh wrote: > > > On 23 March 2017 at 01:23, hubert wrote: > >>

Re: [Emc-users] Thing with a square hole

On 24 May 2017, at 08:29, andy pugh wrote: > On 23 March 2017 at 01:23, hubert wrote: >>I really like your Idea of using the Cam lock approach for a 4Axis >> chuck adapter. > > FWIW, I have this mechanically complete now: > http://bodgesoc.blogspot.de/2017/05/harmonic.html

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 01:23, hubert wrote: > I really like your Idea of using the Cam lock approach for a 4Axis > chuck adapter. FWIW, I have this mechanically complete now: http://bodgesoc.blogspot.de/2017/05/harmonic.html -- atp "A motorcycle is a bicycle with a pandemonium

Re: [Emc-users] Thing with a square hole

On 3 April 2017 at 22:06, hubert wrote: > Thank you for the the 3D-model of a split D1-5 model spindle nose. > What was your source of the D1-5 dimensions? I have a copy of the ISO standard. > Since I am doing this for an FHA-40C my PCD is 112MM right under the > CAMS. In this

Re: [Emc-users] Thing with a square hole

On 3/23/17 10:01 AM, andy pugh wrote: > > I have modelled the D1-5 nose and attempted to fit the 74mm PCD holes > in. It's not pretty. two of the holes are impossible, I think, and the > others need to be counterbored so deep that the heads are lower than > the D1 cams (or they have to go

Re: [Emc-users] Thing with a square hole

On 24 March 2017 at 05:20, hubert wrote: > If I am reading this manual correctly this Actuator is 4 wire > incremental pulse. What are you using for a driver? Mine is the B-version. That has 15 wires back from the encoder. (6 differential signals for ABZ and UVW and power/gnd) I

Re: [Emc-users] Thing with a square hole

On 3/23/17 5:38 PM, andy pugh wrote: > On 23 March 2017 at 22:20, hubert wrote: >> My Bad it should have been this link >> http://www.ebay.co.uk/itm/Harmonic-drive-systems-Used-FHA-40C-100-E250-AC-Servo-Actuator-/111964401976?hash=item1a11993138:g:3JsAAOSwSzdXCcXg > Don't rush

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 22:20, hubert wrote: > My Bad it should have been this link > http://www.ebay.co.uk/itm/Harmonic-drive-systems-Used-FHA-40C-100-E250-AC-Servo-Actuator-/111964401976?hash=item1a11993138:g:3JsAAOSwSzdXCcXg Don't rush into buying one. I set up a search on eBay

Re: [Emc-users] Thing with a square hole

On 3/23/17 5:06 PM, andy pugh wrote: > On 23 March 2017 at 21:45, hubert wrote: >> I am contemplating purchase of this one >> http://www.ebay.co.uk/itm/Harmonic-drive-systems-Used-FHA-17C-100-E250-AC-Servo-Actuator-/111964389396?hash=item1a11990014:g:jCQAAOSwjMJXCcGL >> If I read

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 21:45, hubert wrote: > I am contemplating purchase of this one > http://www.ebay.co.uk/itm/Harmonic-drive-systems-Used-FHA-17C-100-E250-AC-Servo-Actuator-/111964389396?hash=item1a11990014:g:jCQAAOSwjMJXCcGL > If I read it right it has 100 to one step down ratio

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 21:24, hubert wrote: > I think I will buy the camlocks and start there. I like your split > model but how would you machine the recesses for the cam lock? ball > mill? You mention making a casting. Do you think it would accommodate > the 40 MM size as well?

Re: [Emc-users] Thing with a square hole

On 3/23/17 4:13 PM, andy pugh wrote: > On 23 March 2017 at 20:33, hubert wrote: >> I found this >> http://harmonicdrive.de/mage/media/catalog/category/1018853_FHA_C_en.pdf >> reference on harmonic drives >> and noticed the 25 or 32 etc in the model number seemed to reflect >>

Re: [Emc-users] Thing with a square hole

On 3/23/17 3:14 PM, andy pugh wrote: > On 23 March 2017 at 17:01, hubert wrote: >> I have a Grizzly G0709 lathe and they offer these as spare parts. >> >> http://www.grizzly.com/parts/P07090108?utm_campaign=zPage_source=grizzly.com > Do they list the entire spindle? It would

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 20:33, hubert wrote: > I found this > http://harmonicdrive.de/mage/media/catalog/category/1018853_FHA_C_en.pdf > reference on harmonic drives > and noticed the 25 or 32 etc in the model number seemed to reflect > approximately the internal bore of the hollow

Re: [Emc-users] Thing with a square hole

On 3/23/17 2:09 PM, andy pugh wrote: > On 23 March 2017 at 18:15, hubert wrote: >> SkyFire the builder of my mill offers a complete >> ready to hook to my Mesa 7I86 8" Harmonic Drive for about $2000. It >> isn't my dream solution, but doesn't break my bank either. > Looking at

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 17:01, hubert wrote: > I have a Grizzly G0709 lathe and they offer these as spare parts. > > http://www.grizzly.com/parts/P07090108?utm_campaign=zPage_source=grizzly.com Do they list the entire spindle? It would save some machining. -- atp "A motorcycle is

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 18:15, hubert wrote: > SkyFire the builder of my mill offers a complete > ready to hook to my Mesa 7I86 8" Harmonic Drive for about $2000. It > isn't my dream solution, but doesn't break my bank either. Looking at the spec and the screws holding the rotary

Re: [Emc-users] Thing with a square hole

On 3/23/17 10:01 AM, andy pugh wrote: > On 23 March 2017 at 01:23, hubert wrote: >> How are you approaching this project? I am assuming that you >> are starting with a plate that will be attached to the 4th axis and >> machining that plate to accept the cam lock studs and cam

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 17:49, hubert wrote: > If you look in the GO790 Manual or parts list it shows the part. Here is a way to make a nose with "embedded" screw heads. http://a360.co/2mUXk6s You can see inside with the "explode" slider. I might even make mine this way, it will

Re: [Emc-users] Thing with a square hole

Should be GO709 http://www.grizzly.com/products/g0709/parts On 3/23/17 12:49 PM, hubert wrote: > If you look in the GO790 Manual or parts list it shows the part. > > > On 3/23/17 12:20 PM, andy pugh wrote: >> On 23 March 2017 at 17:01, hubert wrote: >>> I have a Grizzly G0709

Re: [Emc-users] Thing with a square hole

If you look in the GO790 Manual or parts list it shows the part. On 3/23/17 12:20 PM, andy pugh wrote: > On 23 March 2017 at 17:01, hubert wrote: >> I have a Grizzly G0709 lathe and they offer these as spare parts. >>

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 17:01, hubert wrote: > I have a Grizzly G0709 lathe and they offer these as spare parts. > http://www.grizzly.com/parts/P07090108?utm_campaign=zPage_source=grizzly.com Pity there is no picture to be sure that it is the right part. -- atp "A motorcycle is a

Re: [Emc-users] Thing with a square hole

I have a Grizzly G0709 lathe and they offer these as spare parts. http://www.grizzly.com/parts/P07090108?utm_campaign=zPage_source=grizzly.com On 3/23/17 10:01 AM, andy pugh wrote: > On 23 March 2017 at 01:23, hubert wrote: >> In my >> case I can get a complete set(6 ea) of

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 01:23, hubert wrote: > In my > case I can get a complete set(6 ea) of locks from my Lathe source for US > $36. Link? -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and

Re: [Emc-users] Thing with a square hole

On 23 March 2017 at 01:23, hubert wrote: > How are you approaching this project? I am assuming that you > are starting with a plate that will be attached to the 4th axis and > machining that plate to accept the cam lock studs and cam locks. In my > case I can get a complete

Re: [Emc-users] Thing with a square hole

Andy I really like your Idea of using the Cam lock approach for a 4Axis chuck adapter. In my case I have 3 chucks for my lathe that uses D1-5 spindle so it gives much versatility If I could also use them on my 4th Axis. How are you approaching this project? I am assuming that you are

Re: [Emc-users] Thing with a square hole

On 22 March 2017 at 23:33, Dave Cole wrote: > OK... 4th axis chuck.I get it. Well, to be clear, a 4th-axis spindle-nose -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and

Re: [Emc-users] Thing with a square hole

OK... 4th axis chuck.I get it. Thanks, Dave On 3/22/2017 9:18 AM, Eric Keller wrote: > 3(?) of them hold the chuck on the spindle. When Andy first asked > about it, it didn't sink in what he was asking about. My lathe was > much nicer when I replaced the cams on the spindle, before that it

Re: [Emc-users] Thing with a square hole

On Wednesday 22 March 2017 10:39:11 andy pugh wrote: > On 22 March 2017 at 12:48, Dave Cole wrote: > > Andy, where does that part go in a 4th axis assembly? > > I have a D1-4 spindle on my lathe, and several chucks, collets, > faceplates etc to suit. So the plan is to

Re: [Emc-users] Thing with a square hole

On 22 March 2017 at 12:48, Dave Cole wrote: > Andy, where does that part go in a 4th axis assembly? I have a D1-4 spindle on my lathe, and several chucks, collets, faceplates etc to suit. So the plan is to make my 4th axis with a D1-4 face so that I can use the same

Re: [Emc-users] Thing with a square hole

3(?) of them hold the chuck on the spindle. When Andy first asked about it, it didn't sink in what he was asking about. My lathe was much nicer when I replaced the cams on the spindle, before that it was problematic to get a chuck on and off. On Wed, Mar 22, 2017 at 8:48 AM, Dave Cole

Re: [Emc-users] Thing with a square hole

Andy, where does that part go in a 4th axis assembly? Is that a cam lock component ?? Thanks, Dave On 3/22/2017 5:40 AM, andy pugh wrote: > On 22 March 2017 at 02:55, Chris Albertson wrote: >> I missed the beginning of this thread. But the thing used to cut

Re: [Emc-users] Thing with a square hole

On 22 March 2017 at 02:55, Chris Albertson wrote: > I missed the beginning of this thread. But the thing used to cut square > internal corners is a "broach". Yes, I know. And I have both used and made them in the past.

Re: [Emc-users] Thing with a square hole

I missed the beginning of this thread. But the thing used to cut square internal corners is a "broach".It looks a littler bit like a saw. It cuts by moving laterally like a saw or file.I think the most common use is to cut a keyway into the side of a hole that is bored through the center

Re: [Emc-users] Thing with a square hole.

Use a rotary broach. The cutters can be found at reasonable prices. The holders tend to be stupid expensive. Fortunately there's plenty of DIY info on how to build your own. -- Check out the vibrant tech community on one

Re: [Emc-users] Thing with a square hole.

On 20 March 2017 at 17:43, John Figie wrote: > I just saw this last week. Hemingway kits has a compact rotary broach > kit. I am not sure if it can handle a 10mm square. That was my next plan. AvE has a very quick and dirty variant on Youtube too. But for this project,

Re: [Emc-users] Thing with a square hole.

I just saw this last week. Hemingway kits has a compact rotary broach kit. I am not sure if it can handle a 10mm square. https://youtu.be/O2glVyU0_C0 John On Mar 20, 2017 12:03 PM, "Jon Elson" wrote: > On 03/20/2017 10:26 AM, andy pugh wrote: > > On 20 March 2017 at

Re: [Emc-users] Thing with a square hole.

On 03/20/2017 10:26 AM, andy pugh wrote: > On 20 March 2017 at 14:37, Dave Caroline wrote: >> you dont need space for an edm machine the fella down the road >> probably accepts folding paper, price depends on qty, I get taps burnt >> out for a tenner > Well, I just

Re: [Emc-users] Thing with a square hole.

On 20 March 2017 at 14:37, Dave Caroline wrote: > you dont need space for an edm machine the fella down the road > probably accepts folding paper, price depends on qty, I get taps burnt > out for a tenner Well, I just found some with a google search I haven't tried

Re: [Emc-users] Thing with a square hole.

On Monday 20 March 2017 10:19:49 andy pugh wrote: > On 20 March 2017 at 14:14, Dave Caroline wrote: > > probably easiest to EDM the square > > I would need to find space for the EDM machine. I do EDM on my little HF mill Andy. But I connect the EDN power wires so

Re: [Emc-users] Thing with a square hole

Andy - The guys at the shop where I last worked beside used to slightly grind the flutes of a standard end mill, leaving (say) 6mm of flute length for cutting pockets. That way, the "higher up" flutes did not re-cut swarf, and thus deflect the tool, and there was no tool rubbing on the higher up

Re: [Emc-users] Thing with a square hole.

you dont need space for an edm machine the fella down the road probably accepts folding paper, price depends on qty, I get taps burnt out for a tenner Dave -- Check out the vibrant tech community on one of the world's

Re: [Emc-users] Thing with a square hole.

> Sent: Monday, March 20, 2017 10:21 AM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] Thing with a square hole. > > You could mill a 10mm wide x 5mm deep slot in two rectangular bars, then > silver-braze them together. > Might not be strong enough, depends

Re: [Emc-users] Thing with a square hole.

You could mill a 10mm wide x 5mm deep slot in two rectangular bars, then silver-braze them together. Might not be strong enough, depends on if the OD is big enough to leave a reasonable joint area. Welding would probably leave a hardened zone and be miserable to machine afterwards. John On

Re: [Emc-users] Thing with a square hole.

On 20 March 2017 at 14:14, Dave Caroline wrote: > probably easiest to EDM the square I would need to find space for the EDM machine. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses,

Re: [Emc-users] Thing with a square hole.

On 20 March 2017 at 14:09, Eric Keller wrote: > make a square broach? https://www.youtube.com/watch?v=MYI1slVGziU It's a blind hole (and needs to be). I have thought about making a wobble-broach. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed

Re: [Emc-users] Thing with a square hole.

probably easiest to EDM the square Dave Caroline -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot

Re: [Emc-users] Thing with a square hole.

make a square broach? https://www.youtube.com/watch?v=MYI1slVGziU On Mon, Mar 20, 2017 at 9:58 AM, andy pugh wrote: > I want to make some D1-4 cams for a 4th-axis project. > These need a 10mm square hole (but 3/8 would be fine too). > I don't think I can polygon-bore a