Re: [Emc-users] Relatively cheap harmonic actuator
Le lun. 28 déc. 2020 à 00:27, andy pugh a écrit : > On Sun, 27 Dec 2020 at 22:23, Jérémie Tarot wrote: > > > > > I think there is an order of populated PCBs in progress. > > > > > > > Oh really? Please tell me where should I put my money to join the happy > > few! > > > I saw it on the gitter. > > I thought about a Kickstarter when I had my batch of 50 made. But then > realised that I didn't know quite enough to support the buyers. > That's why I hopped for one of the masters over there to raise hand because I surely don't either Question is, would it be different for a "simple" group buy? I wouldn't like to be banned from the channel because I somehow brought new users there. Even worse if all those guys start barking at me because they get ignored. (And, yes, I know I wrote most of the docs, that was just me documenting > what I had learned making mine work) > And you're sincerely thanked for that, too I think that the situation is that the STMBL is the dream drive for many > retrofits, As well as for all Open Source machine builders, and surely many others as feature wise it's already a killer with still room for improvement! but the actual designers have all the drives they will ever need > for their own use, and were never in it to make a product, or to make > money. > This I begin to understand but that's such a pity that I hardly can resign to it. So the incentive to make the next-stage drive is low. They probably feel > that they should, and will, but how many projects do you have at that level > right now? > To many for sure, but this one is a stepping stone on the road to fully open source machines. Then we'll need encoders, motors and spindles... ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
On Sun, 27 Dec 2020 at 22:23, Jérémie Tarot wrote: > > I think there is an order of populated PCBs in progress. > > > > Oh really? Please tell me where should I put my money to join the happy > few! I saw it on the gitter. I thought about a Kickstarter when I had my batch of 50 made. But then realised that I didn't know quite enough to support the buyers. (And, yes, I know I wrote most of the docs, that was just me documenting what I had learned making mine work) I think that the situation is that the STMBL is the dream drive for many retrofits, but the actual designers have all the drives they will ever need for their own use, and were never in it to make a product, or to make money. So the incentive to make the next-stage drive is low. They probably feel that they should, and will, but how many projects do you have at that level right now? -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
Le dim. 27 déc. 2020 à 23:08, Andy Pugh a écrit : > > > > On 27 Dec 2020, at 21:51, Andrew wrote: > > > > > > Suppose I'd like to get a few STMBLs. Have they resolved the obsolete > IRAMS > > problem? > > I think it’s complicated. What's most complicated is project communication! It's an heartbreaker There is a design using something else, but it hasn’t been released. > Read this for so long on gitter that I'm beginning to think it's a legend... And, another user has found a supplier with sizeable stocks. Unless I'm wrong that' s here: https://www.rocelec.com/part/INFIRAM256-2067A2 I think there is an order of populated PCBs in progress. > Oh really? Please tell me where should I put my money to join the happy few! I even have proposed to crowdfund a batch to help finance the mythical next version. Not even had an answer. I have collected (hopefully) all needed infos but I haven't the knowledge and skills to build the drives myself. I see the day coming when I'll send money to China because in years I won't have been able to get a handful of these. This makes me really sad. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
> On 27 Dec 2020, at 21:51, Andrew wrote: > > > Suppose I'd like to get a few STMBLs. Have they resolved the obsolete IRAMS > problem? I think it’s complicated. There is a design using something else, but it hasn’t been released. And, another user has found a supplier with sizeable stocks. I think there is an order of populated PCBs in progress. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
нд, 27 груд. 2020 о 23:32 Andy Pugh пише: > > Can STMBL pass the encoder value to LinuxCNC? > > Yes, and very conveniently as a Mesa smart-serial device. > That's reasonable. But the doc says it supports sserial input, so I was not sure. > > In fact the STMBL low-voltage board probably has a role as an encoder > interface board, ignoring the power driver board. > Suppose I'd like to get a few STMBLs. Have they resolved the obsolete IRAMS problem? ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
> On 27 Dec 2020, at 21:10, Andrew wrote: > > > Can STMBL pass the encoder value to LinuxCNC? Yes, and very conveniently as a Mesa smart-serial device. In fact the STMBL low-voltage board probably has a role as an encoder interface board, ignoring the power driver board. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
Is there some kind of standard naming scheme for these devices? ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
нд, 27 груд. 2020 о 23:00 Andy Pugh пише: > > I run my B variant with an STMBL drive. > The STMBL docs say that Hiperface _could_ be supported but needs a module > to be written. > > They also say EnDat is almost supported... but I'm currently looking for another drive to support EnDat. Yaskawa might. Can STMBL pass the encoder value to LinuxCNC? ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
> On 27 Dec 2020, at 20:47, Andrew wrote: > > M1024 code is Multi-turn absolute, HIPERFACE® protocol. > I'm not sure how to read them to LinuxCNC. I run my B variant with an STMBL drive. The STMBL docs say that Hiperface _could_ be supported but needs a module to be written. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
нд, 27 груд. 2020 о 22:12 andy pugh пише: > > Another couple of harmonic actuators 32 and 40 size > > https://www.ebay.com/itm/313352791688 > > https://www.ebay.com/itm/313352797664 > > Note that these are the "C" variant so have a less convenient encoder > than the B variant. > > (The earlier B variant has quadrature + Hall sensors, the C uses an > absolute encoder) > > Yes. M1024 code is Multi-turn absolute, HIPERFACE® protocol. I'm not sure how to read them to LinuxCNC. However, HIPERFACE combines RS485 multiturn information and 1VPP sin/cos signal. The latter can be read. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
> On 27 Dec 2020, at 20:38, Jérémie Tarot wrote: > > What makes absolute encoders less convenient? I'd have thought the opposite > as the avoid homing? Well, they are better _if_ you can figure out how to get the data into LinuxCNC. ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
Le dim. 27 déc. 2020 à 21:12, andy pugh a écrit : > > Note that these are the "C" variant so have a less convenient encoder > than the B variant. > > (The earlier B variant has quadrature + Hall sensors, the C uses an > absolute encoder) > What makes absolute encoders less convenient? I'd have thought the opposite as the avoid homing? ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
On Sun, 27 Dec 2020 at 20:01, Andrew wrote: > > Another couple of harmonic actuators 32 and 40 size > https://www.ebay.com/itm/313352791688 > https://www.ebay.com/itm/313352797664 Note that these are the "C" variant so have a less convenient encoder than the B variant. (The earlier B variant has quadrature + Hall sensors, the C uses an absolute encoder) -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
Another couple of harmonic actuators 32 and 40 size https://www.ebay.com/itm/313352791688 https://www.ebay.com/itm/313352797664 Look pretty nice вт, 1 вер. 2020 о 14:17 andy pugh пише: > https://www.ebay.co.uk/itm/164363134065 > > It looks to have had a hard life, but there are others on there at 10x > the price. > > These are a really useful device, as they integrate a servo, harmonic > drive and a very strong crossed-roller slewing ring in one package. > > Basically a 4th-axis all ready to go. > > I nearly bought this one myself, but I already have one doing good > service as my 4th axis. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1912 > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
That is interesting. I wonder if it is China's version of drop shipping but on used items. Sellers list the items they never actually own and a larger wholesaler is handling the logistics to the buyer. I know it is common place in the US for sites like Ebay and Amazon. From: andy pugh Sent: Wednesday, November 4, 2020 3:59 AM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Relatively cheap harmonic actuator On Sat, 5 Sep 2020 at 16:20, Tom Smart wrote: > > Did anyone order one of these drives from this listing? I ordered one and go > an email today saying they only had 2 left and they were both faulty so > canceled my order. Which is odd, as that same listing now says that they have 10 @ £525 and a different vendor name, with the _exact_ same photo has 5 at half the price. Compare: https://www.ebay.co.uk/itm/233587431605 https://www.ebay.co.uk/itm/154176967758 -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
On Sat, 5 Sep 2020 at 16:20, Tom Smart wrote: > > Did anyone order one of these drives from this listing? I ordered one and go > an email today saying they only had 2 left and they were both faulty so > canceled my order. Which is odd, as that same listing now says that they have 10 @ £525 and a different vendor name, with the _exact_ same photo has 5 at half the price. Compare: https://www.ebay.co.uk/itm/233587431605 https://www.ebay.co.uk/itm/154176967758 -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
Did anyone order one of these drives from this listing? I ordered one and go an email today saying they only had 2 left and they were both faulty so canceled my order. Just wondering if anyone was ablento get one. From: John Dammeyer Sent: Tuesday, September 1, 2020 10:06 AM To: 'Enhanced Machine Controller (EMC)' Subject: Re: [Emc-users] Relatively cheap harmonic actuator > From: Tom Smart [mailto:smart_tow...@hotmail.com] > How large is your 4th axis made from one of these? Any pics? How complicated > was the construction? Like Andy, I've made mine complicated too. I haven't yet made a face plate either. He has a cam lock chuck on his lathe to be able to move the chuck with work held in it to the 4th axis.. I have a South Bend Heavy 10L with a screw on chuck and 5C collet spindle. I'm undecided whether I'm better to make a faceplate that can use the SB chuck/faceplate or something else. As a result the indecision means nothing has been made yet. I posted photos of the 3D printed pattern on the 8th of August. Although Andy has a spare casting the mount hole spacing doesn't match my mill and shipping cast iron from the UK was scary. http://www.autoartisans.com/mill/HarmonicDrive/D8X_5784_Plastic_Mount.jpg John ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
> From: Tom Smart [mailto:smart_tow...@hotmail.com] > How large is your 4th axis made from one of these? Any pics? How complicated > was the construction? Like Andy, I've made mine complicated too. I haven't yet made a face plate either. He has a cam lock chuck on his lathe to be able to move the chuck with work held in it to the 4th axis.. I have a South Bend Heavy 10L with a screw on chuck and 5C collet spindle. I'm undecided whether I'm better to make a faceplate that can use the SB chuck/faceplate or something else. As a result the indecision means nothing has been made yet. I posted photos of the 3D printed pattern on the 8th of August. Although Andy has a spare casting the mount hole spacing doesn't match my mill and shipping cast iron from the UK was scary. http://www.autoartisans.com/mill/HarmonicDrive/D8X_5784_Plastic_Mount.jpg John ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
I haven't got mine actually running as the 4th axis yet but I do have it turning with the STMBL AC servo drive sitting in a 3D printed mount. I've included the spec sheet. John Dammeyer > -Original Message- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: September-01-20 4:03 AM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] Relatively cheap harmonic actuator > > https://www.ebay.co.uk/itm/164363134065 > > It looks to have had a hard life, but there are others on there at 10x > the price. > > These are a really useful device, as they integrate a servo, harmonic > drive and a very strong crossed-roller slewing ring in one package. > > Basically a 4th-axis all ready to go. > > I nearly bought this one myself, but I already have one doing good > service as my 4th axis. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > � George Fitch, Atlanta Constitution Newspaper, 1912 > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users FHA-14A-17A-25B specs.pdf Description: Adobe PDF document ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
On Tue, 1 Sep 2020 at 16:16, Tom Smart wrote: > > How large is your 4th axis made from one of these? Any pics? How complicated > was the construction? https://bodgesoc.blogspot.com/2017/05/harmonic.html I made it complicated :-) -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Relatively cheap harmonic actuator
How large is your 4th axis made from one of these? Any pics? How complicated was the construction? From: andy pugh Sent: Tuesday, September 1, 2020 5:02 AM To: Enhanced Machine Controller (EMC) Subject: [Emc-users] Relatively cheap harmonic actuator https://www.ebay.co.uk/itm/164363134065 It looks to have had a hard life, but there are others on there at 10x the price. These are a really useful device, as they integrate a servo, harmonic drive and a very strong crossed-roller slewing ring in one package. Basically a 4th-axis all ready to go. I nearly bought this one myself, but I already have one doing good service as my 4th axis. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
