Hmm the lincurve component might be what I need. Thanks guys. For all the ideas
I'll have a play once I get to it next week On Tue, Aug 10, 2021, 2:52 PM Peter C. Wallace <[email protected]> wrote: > On Tue, 10 Aug 2021, andrew beck wrote: > > > Date: Tue, 10 Aug 2021 14:31:22 +1200 > > From: andrew beck <[email protected]> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <[email protected]> > > To: "Enhanced Machine Controller (EMC)" <[email protected] > > > > Subject: Re: [Emc-users] Just a little rigid Tapping Clip. With peck > tapping > > > > Andy can you think of any good ways to change acceleration on the fly? > > > If you are using the limit2 component, changing Spindle accelration > is just a matter of changing the limit2.N.maxv value on the fly > > A bang-bang way to do this would be to feed the absolute value of the > spindle > speed into the compare comp and use the compare components output to select > between 2 accelleration settings (with a mux2 component) > > A more elegant way might be to use the lincurve component to map spindle > velocitys into acceptable accelerations > > > > > I could call a custom m code in my post processor if I had to. > > > > Or is it possible to increase the deceleration if under 1000rpm? > Currently > > my spindle acceleration is running through a limit component > > > > On Tue, Aug 10, 2021, 1:45 PM John Dammeyer <[email protected]> > wrote: > > > >> I agree it would be nice to change acceleration on the fly based on the > >> G-Code. The AC Servo on the spindle responds really quickly so fast > >> acceleration is really fast. Great for the tapping. Annoying > otherwise. > >> > >> John > >> > >>> -----Original Message----- > >>> From: andrew beck [mailto:[email protected]] > >>> Sent: August-09-21 5:17 PM > >>> To: Enhanced Machine Controller (EMC) > >>> Subject: Re: [Emc-users] Just a little rigid Tapping Clip. With peck > >> tapping > >>> > >>> Quick answer before I go out. > >>> > >>> Peck Tapping breaks the chip otherwise they can break taps. Eg tap m6 > >> down > >>> 30mm you might break it. But do it in two bites you should be sweet > >>> and rpm is 400. > >>> > >>> If I somehow work out how to know if g33.1 (rigid Tapping is active) > and > >>> export that to a python script. Then I can change my spindle > acceralation > >>> briefly and tap at 1000rpm with almost no over shoot. The spindle Vfd > >> can > >>> reverse in 120degrees currently at 1500rpm > >>> > >>> But that will take some coding I think. > >>> > >>> I can change acceralation on the fly with custom m codes and halcmd > >>> currently but need to to set it up to automatically change back and > forth > >>> if rigid Tapping is active > >>> > >>> > >>> > >>> On Tue, Aug 10, 2021, 11:50 AM John Dammeyer <[email protected]> > >> wrote: > >>> > >>>> Impressive. Lots of questions. > >>>> > >>>> Why did you make two passes? Just because? Seems like the spirals > >> could > >>>> get caught and muck up the threads on the second pass. > >>>> > >>>> Was this steel or aluminium? > >>>> > >>>> What type of coolant are you using? > >>>> > >>>> Do you have an oil separator disk or belt and aeration to keep it from > >>>> getting smelly? > >>>> > >>>> I did my 10-32 tapping at 150 RPM. Still scary how fast it moves up > >> and > >>>> down. > >>>> > >>>> John > >>>> > >>>> > >>>> > >>>>> -----Original Message----- > >>>>> From: andrew beck [mailto:[email protected]] > >>>>> Sent: August-09-21 1:20 PM > >>>>> To: Enhanced Machine Controller (EMC) > >>>>> Subject: [Emc-users] Just a little rigid Tapping Clip. With peck > >> tapping > >>>>> > >>>>> M14x2 spiral flute tap. > >>>>> > >>>>> Rpm 400 > >>>>> > >>>>> Pecking 15mm.total depth 35 > >>>>> > >>>>> I can turn main power off at the wall and it will re line up with > >> tapped > >>>>> threads so long as I leave it in the vice. > >>>>> > >>>>> That's so cool. Love linuxcnc > >>>>> > >>>>> Might try a m20 tap sometime. I have 7.5kw spindle. Be interesting > >> to > >>>> see > >>>>> if it can push it lol > >>>>> > >>>>> https://youtu.be/6QX2Qm3I2Ak > >>>>> > >>>>> _______________________________________________ > >>>>> Emc-users mailing list > >>>>> [email protected] > >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>>> > >>>> > >>>> > >>>> _______________________________________________ > >>>> Emc-users mailing list > >>>> [email protected] > >>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>>> > >>> > >>> _______________________________________________ > >>> Emc-users mailing list > >>> [email protected] > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >> > >> > >> _______________________________________________ > >> Emc-users mailing list > >> [email protected] > >> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > Peter Wallace > Mesa Electronics > > (\__/) > (='.'=) This is Bunny. Copy and paste bunny into your > (")_(") signature to help him gain world domination. > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
