Presumably your machine is different to mine.. I have a BT30 spindle and it had broken washers when I got the machine.
I was very relieved to simply loosen/remove two locking nuts at the top of the drawbar and the complete stack simply dropped out the bottom. On Mon, 27 Jun 2022 at 18:04, dave engvall <dengv...@charter.net> wrote: > Hi Todd and others; > Indeed it is a horrible idea but I feel backed to the wall. > > I have T lugs but they are secured by M6 shcs which is no where close to > as strong as the normal retention stud. However, I plan to use the > machine at full rpm with AlCrN coated end mill, > coolant and keep the loading low. > I don't have much to lose. My chances of living more than 10 years more > are not good and that assume health good enough to work in the shop. > > Dave > > > On 6/27/22 7:25 AM, Todd Zuercher wrote: > > Gluing a spindle taper into a spindle sounds like a truly horribly > idea. (I'd be more worried about it letting go when you didn't want it to, > than trying to get it out later if you did want to remove it, although that > also may prove problematic.) > > > > The drive lugs are usually removable/replaceable. Maybe you could make > new drive lugs that also positively engage the tool holder to retain it. > Something like a longer T shape that would capture the tool holder flange. > (Personally I'd do every thing I could to fix the spindle properly though.) > > > > Todd Zuercher > > P. Graham Dunn Inc. > > 630 Henry Street > > Dalton, Ohio 44618 > > Phone: (330)828-2105ext. 2031 > > > > -----Original Message----- > > From: dave engvall <dengv...@charter.net> > > Sent: Monday, June 27, 2022 9:57 AM > > To: emc-users@lists.sourceforge.net > > Subject: Re: [Emc-users] spindle problem > > > > [EXTERNAL EMAIL] Be sure links are safe. > > > > Update: The drive lugs get in the way of a safety disk or ring or > anything else. Epoxy looks more promising; just a semi-permanent solution. > > Note: Epoxy can always be removed with heat or chlorinated solvents > but... > > Dave > > > > On 6/27/22 6:27 AM, dave engvall wrote: > >> Back again; > >> Since crawling in under the spindle is difficult for an old stiff guy > >> I laid the iphone on the table and took a pic, rotated the spindle 45 > >> degrees and took another; nothing useful moved. However, there are > >> large socket head cap screws around the perimeter of the spindle. It > >> should be possible to make a safety cap that has a few thou clearance > >> to limit axial movement. 'Maybe' I can jury rig something. Basically I > >> have to see what kind of clearances I have. An actual thrust bearing > >> seems like asking for trouble. > >> Psychologically it would almost be easier to pick up the radiator cap > >> and run a new(er) one in. Still that brings all sorts of problems of > >> its own. Hard to win. > >> Back to the drawing table. ;-) > >> Dave > >> > >> On 6/26/22 9:10 AM, andy pugh wrote: > >>> On Sun, 26 Jun 2022 at 15:45, dave engvall <dengv...@charter.net> > wrote: > >>> > >>>> A couple of solutions present themselves but neither are ideal. > >>>> Simply use the M6 shcs that hold the dogs in place to secure the > CAT40. > >>>> Balance and adequate strength/safety would seem to present problems. > >>> Does the nose have any extra holes? There are 4 threaded holes with > >>> no obvious function on my 30INT spindle and looking around the > >>> internet I see threaded holes in some of the CAT40 spindles. > >>> It seems that you could use those to hold in a custom ER40 (or > >>> similar) adaptor. > >>> > >>> 4000 rpm probably isn't fast enough to need to worry too much about > >>> balance. > >>> > >>> > >> > >> > >> _______________________________________________ > >> Emc-users mailing list > >> Emc-users@lists.sourceforge.net > >> https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist > >> s.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C01%7Cto > >> ddz%40pgrahamdunn.com%7Cd876656d34af455849e308da58450956%7C5758544c573 > >> f47cebee96c3e0806fb43%7C0%7C0%7C637919350789204421%7CUnknown%7CTWFpbGZ > >> sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3 > >> D%7C3000%7C%7C%7C&sdata=3sMlH8RJi3F6SLfmQUSLComdi4ljNjUd3xja1Zz%2F > >> X6I%3D&reserved=0 > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C01%7Ctoddz%40pgrahamdunn.com%7Cd876656d34af455849e308da58450956%7C5758544c573f47cebee96c3e0806fb43%7C0%7C0%7C637919350789204421%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3sMlH8RJi3F6SLfmQUSLComdi4ljNjUd3xja1Zz%2FX6I%3D&reserved=0 > > > > > > _______________________________________________ > > 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
