I don't think the epoxy idea will fly ... or more to the point, I think it will fly, but the direction of departure may be less than helpful!
Capscrews, possible, but again, I think I would worry about what happened under load. If it was me, despite it being difficult, I would either do it bit by bit over a couple of weeks, taking it steady and getting it sorted in my own time and pace ... or get someone to come in and help, even if you have to pay them. If I was not on a different continent I'd be round in a jiffy with the spanners! I've never been anything but failed to be impressed by the kindness of strangers, sometimes you just have to ask in the right places. On Mon, 27 Jun 2022 at 17:22, Ralph Stirling <ralph.stirl...@wallawalla.edu> wrote: > What kind of ceiling clearance and structure do you have over the Mazak? > Would it be possible to rig up a hoist in place to lift the spindle? > > -- Ralph > > On Jun 27, 2022 9:00 AM, dave engvall <dengv...@charter.net> wrote: > CAUTION: This email originated from outside the Walla Walla University > email system. > > > 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://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fnam04.safelinks.protection.outlook.com%2F%3Furl%3Dhttps%253A%252F%252Flist&data=05%7C01%7Cralph.stirling%40wallawalla.edu%7C94a9d69d8d4d4724258d08da58562f6e%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637919424448312013%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=tKVqHOZINKjGG7P0kGeNS85ilw%2BTqb4xmecNKJ5EiWQ%3D&reserved=0 > >> 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://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C01%7Cralph.stirling%40wallawalla.edu%7C94a9d69d8d4d4724258d08da58562f6e%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637919424448312013%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Zg%2BVglEy1H69c1sl8kQaPbPUBmjU8%2BtgwLLSPraMrhs%3D&reserved=0 > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > > https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C01%7Cralph.stirling%40wallawalla.edu%7C94a9d69d8d4d4724258d08da58562f6e%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637919424448312013%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Zg%2BVglEy1H69c1sl8kQaPbPUBmjU8%2BtgwLLSPraMrhs%3D&reserved=0 > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > > https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=05%7C01%7Cralph.stirling%40wallawalla.edu%7C94a9d69d8d4d4724258d08da58562f6e%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C0%7C637919424448312013%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=Zg%2BVglEy1H69c1sl8kQaPbPUBmjU8%2BtgwLLSPraMrhs%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
