In my past life I worked with the CNC guys at Milacron in the early 90's before the company fractured into several parts. For a period of time Siemens sold them containers full of Servo motors and drives on a regular basis. They were a huge Siemens customer. Those guys were sharp. If they could take a second out of some motion, they would do it. For a while they had their own in house developed CNC control. Siemens bought out part of Milacron for the CNC control and harvested what they could and eventually shut down that operation. Milacron split into several different directions in the 90's. For a large part of the 20th century they were a very important business in and around Cincinnati. They just couldn't figure out how to compete with the low cost machines coming in from overseas.
Dave On 11/10/2015 10:13 PM, r...@superiorroll.com wrote: > Proportionally controlled hydraulic motor, with hard stops and limit switches > at each stopping point of its travels. It takes about 2.5 seconds to make the > 180 degree rotation. That is about as fast as I can get it to go, without > having the tool shaking/rocking too badly when it stops to be exchanged or > put away. > > > Rick > > -------- Original Message -------- > Subject: Re: [Emc-users] Tool changer finally working on our mill project > From: "John Dammeyer" <jo...@autoartisans.com> > Date: Tue, November 10, 2015 9:33 pm > To: "'Enhanced Machine Controller (EMC)'" <emc-users@lists.sourceforge.net> > > I guess that depends on how fast it rotates and how the tool is gripped. It > also depends on whether the rotation is a DC motor with end stop switches or > a servo with position reporting. No point in moving and decelerating to a > stop, telling the unit to extend and then accelerating back up to the > rotation speed. > If it is DC motor based a switch half way around would serve as the > extend/retract begin indication. > On the way to the spindle the switch triggers the extend. On the way from > the spindle the switch triggers the retract. > Only when ready to store the tool does it extend again as it does now. > John > > >> -----Original Message----- >> From: Dave Cole [mailto:linuxcncro...@gmail.com] >> Sent: November-10-15 1:55 PM >> To: emc-users@lists.sourceforge.net >> Subject: Re: [Emc-users] Tool changer finally working on our mill project >> >> >> If you rotate it with it extended it will have a lot more inertia, tend >> to throw the tool, and be harder on the rotator. >> >> If it was rotated with the tool retracted originally, there is likely a >> good reason why they did that. >> >> Dave >> >> On 11/10/2015 4:36 PM, r...@superiorroll.com wrote: >>> When I was writing the ladder logic I followed the original sequence of >> events, but this does make sense, guess I've got some tweaking to do. >>> Thanks >>> >>> Rick >>> >>> -------- Original Message -------- >>> Subject: Re: [Emc-users] Tool changer finally working on our mill > project >>> From: "Pete Matos" <petefro...@gmail.com> >>> Date: Tue, November 10, 2015 3:39 pm >>> To: "Enhanced Machine Controller (EMC)" <emc- >> us...@lists.sourceforge.net> >>> John I wondered the same thing but chalked it up to clearing the > housing >>> of the carousel...altho it does appear to have room. >>> >>> Pete >>> >>> >>> On Tue, Nov 10, 2015 at 3:22 PM, John Dammeyer >> <jo...@autoartisans.com> >>> wrote: >>> >>>> Hi, >>>> Any reason why you won't push the tool holder outwards once it clears >> the >>>> carousel so that when it arrives under the spindle it's already fully >>>> extended? Would save time on tool changes. >>>> Very nice though. >>>> John >>>> >>>>> -----Original Message----- >>>>> From: Pete Matos [mailto:petefro...@gmail.com] >>>>> Sent: November-10-15 10:00 AM >>>>> To: Enhanced Machine Controller (EMC) >>>>> Subject: Re: [Emc-users] Tool changer finally working on our mill > project >>>>> >>>>> Very nice Rick....color me jealous!! >>>>> >>>>> Pete >>>>> >>>>> On Tue, Nov 10, 2015 at 12:37 PM, Rick Lair <r...@superiorroll.com> >>>> wrote: >>>>>> Here it is, after putting all the pieces together, and working the > bugs >>>>>> out, I finally got the tool change working using Andy Pugh's carousel >>>>>> component to control the tool carousel, and a pretty healthy chunk of >>>>>> ladder logic to control everything else. All using Linuxcnc 2.7. >>>>>> >>>>>> Thanks for the help guys,,, >>>>>> >>>>>> https://youtu.be/HwXmZDTMeCA >>>>>> >>>>>> More video's to come >>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>> Thanks >>>>>> >>>>>> >>>>>> Rick Lair >>>>>> Superior Roll & Turning LLC >>>>>> 399 East Center Street >>>>>> Petersburg MI, 49270 >>>>>> PH: 734-279-1831 >>>>>> FAX: 734-279-1166 >>>>>> www.superiorroll.com >>>>>> >>>>>> >>>>>> >>>>>> > ---------------------------------------------------------------------------- >>>> -- >>>>>> _______________________________________________ >>>>>> Emc-users mailing list >>>>>> Emc-users@lists.sourceforge.net >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>>>>> >>>>> >>>>> -- >>>>> Pete Matos >>>>> A and N Precision and Fabrication >>>>> Maryville, Tennessee >>>>> 865-236-8996 >>>>> > ---------------------------------------------------------------------------- >>>> -- >>>>> _______________________________________________ >>>>> 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 >>>> >>> >> > ---------------------------------------------------------------------------- > -- >> _______________________________________________ >> 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 > > > ------------------------------------------------------------------------------ > _______________________________________________ > 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
