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Model Forum / General / Models / May 2008Grinding chuck jaws
Hi all, Towards the bottom of this page http://homemetalshopclub.org/news/aug04/aug04.html is an article on grinding chuch jaws. The method seems to make some sort of sense. I have a Toledo TCT 15 Combimachine grinder (struggling to find any decent images, but look here http://www.wowowo.co.uk/top_products/5292/5292-30.htm about a 1/3rd way down). I need to somehow mount the grinder to my lathe in order to grind the jaws. My lathe is a boxford cud (4.5" center height). If I were to stick the grinder direct onto my compound slide (replace the toolpost), it will be about center height, but as the case is plastic and no flats on it, I am not sure how I would mount it. Looking for ideas (or if anyone has done something similar, perhaps some photos). On another note, when I can get it mounted, no doubt I could do cylindrical grinding... (I used to be a trained grinder before I joined the airforce). I would prefer to dress the wheel prior to grinding. I have a diamond dresser, any ideas how I would mount it in order to dress my wheel parallel? Thanks. Best regards, Dave Colliver. http://www.AshfieldFOCUS.com ~~ http://www.FOCUSPortals.com - Local franchises available > Hi all, > [quoted text clipped - 24 lines] > Dave Colliver.http://www.AshfieldFOCUS.com > ~~http://www.FOCUSPortals.com- Local franchises available If its a dremel clone, which from the piture it looks like then a couple of big hose clamps round the body securing a bar which can be clamped in the toolpost would do it As for dressing a wheel magnetic stand on lathe ways with dresser clamper to post, move carriage back and forward, use cross slide to alter DOC? Dave >> Hi all, >> [quoted text clipped - 34 lines] > >Dave Some "Milliput" or something similar can be moulded onto your grinder body to hold the bar steadier. Some clingfilm will stop it sticking. All clamped as above. -- Richard Email address is valid but remove burrs before sending! It is like a dremel, but much bigger. (I used to have a smaller one, but it somehow disappeared. It did have flats on that one that I could have clamped to). Good idea re the hose clamps. Never thought of that. I was thinking of somehow making like a bridge type of clamp, but I think that would have been unstable. Hose clamps sounds like a much better idea and quicker to implement as well. Also, good idea re the mag mounting of the diamond dresser. Best regards, Dave Colliver. http://www.AshfieldFOCUS.com ~~ http://www.FOCUSPortals.com - Local franchises available >> Hi all, >> [quoted text clipped - 43 lines] > > Dave > I have a Toledo TCT 15 Combimachine grinder (struggling to find any decent > images, but look here http://www.wowowo.co.uk/top_products/5292/5292-30.htm [quoted text clipped - 5 lines] > about center height, but as the case is plastic and no flats on it, I am not > sure how I would mount it. Here is my die-grinder toolholder, which I made initially for the purpose of de-bellmouthing some chuck jaws, its prolly a bit OTT, as is my usual way. Light alloy was what I had to hand at the time: http://www.gateho.nildram.co.uk/images/iqc_grinder_holder.jpg Incidentally, the chuck is a lot better for it.  SignatureCharles Lamont Yes, I was thinking I may have had to make something like that, but I thought for all I am doing, it probably is a bit OTT. I just wanted something quick (and efficient) just so that I can get on with building my engine... Perhaps when I eventually turn my lathe into a pseudo cylindrical grinder, I will go to a bit more length for something like this. However, it may be worth me getting an air grinder. Thanks. Best regards, Dave Colliver. http://www.AshfieldFOCUS.com ~~ http://www.FOCUSPortals.com - Local franchises available >> I have a Toledo TCT 15 Combimachine grinder (struggling to find any >> decent images, but look here [quoted text clipped - 14 lines] > > Incidentally, the chuck is a lot better for it. > Hi all, > [quoted text clipped - 14 lines] > Looking for ideas (or if anyone has done something similar, perhaps some > photos). Is that the Ferm combi-tool thingy? If so then the plastic bit next to the chuck unscrews, and you can mount the tool in something vertical with (I think, but check) an 18 x 1.5 mm threaded hole. The 18 x 1.5 mm thread seems common to many such tools, including Dremels and most dremeloids. -- Peter Fairbrother Hi Peter, Yes, it is like that ferm combi tool. (Mine has Toledo tct15 on it, which is what I wrote, but it looks like they are the same). Yes, I did notice the nose has a thread on it (didn't know what it was... thanks for clarifying). I would have thought though that just supporting on the nose wouldn't be enough as there is all the weight of the body the other side. However, if I combine that idea with Charles' idea when I come to make a more permanent mounting for it, it could be a good method for location. Best regards, Dave Colliver. http://www.AshfieldFOCUS.com ~~ http://www.FOCUSPortals.com - Local franchises available >> Hi all, >> [quoted text clipped - 26 lines] > > -- Peter Fairbrother > Hi Peter, > [quoted text clipped - 6 lines] > However, if I combine that idea with Charles' idea when I come to make a > more permanent mounting for it, it could be a good method for location. The threaded nose is intended for mounting the drill in a vertical stand, which it does quite well - but a horizontal mounting may well need some extra support at the back end. Also the m18 x 1.5 thread was originally chosen for a Dremel, which is smaller and lighter. -- Peter Fairbrother Ah, right. I wasn't aware of that... Makes sense. For a horizontal mount, it would not have been suitable. Best regards, Dave Colliver. http://www.AshfieldFOCUS.com ~~ http://www.FOCUSPortals.com - Local franchises available >> Hi Peter, >> [quoted text clipped - 15 lines] > > -- Peter Fairbrother Well, I have gone and done it now. Ground them up. I was surprised as to how much I had to take off to clean them up thoroughly. I marked each jaw with black marker then ground them. The first strikes were at the rear of the jaw and I set my dial index. By the time I had cleaned all 3 jaws, I had taken about 0.28mm off (radius). No wonder my bars were never round and I also had probs with small bar riding over the tool. (I know, a bad workman never blames his tools, I wasn't blaming them, I just never took account of this problem...) Anyhow, all done. Just have to do it again on my other lathe when I have that up and running. I fastened my grinder to a bar with some hose (jubilee) clips. This bar I mounted in my toolpost. I had problems with the grinder moving when I switched it on initially. However, when it was stable, I was then able to work with it. I think I will make a proper clamping arrangement for it. Best regards, Dave Colliver. http://www.AshfieldFOCUS.com ~~ http://www.FOCUSPortals.com - Local franchises available > Hi all, > [quoted text clipped - 29 lines] > ~~ > http://www.FOCUSPortals.com - Local franchises available |
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