Very nice pictorial of your excellent work!
Here is the cross slide set-up; the Bronze handwheel was todays effort; the alumi support was also made today (tool post is beside the cross slide)
The circle you can see is the referance locator for the compound slide; it keeps it on center as you swing the compound through the arc; an 8mm screw locks the compound
Looking right down the cross slides center; the small setscrew deep down is the adjustment for backlash; there is a small teflon button under the screw; it presses the leadscrew into the nut to reduce the backlash; the other 2 cap head screws hold the nut under for the leadscrew
Compound slide being attached; the 6mm allen key is in the locking 8mm caphead
Here is a bottom shot of the compound; the locating ring can be seen; the 2 small holes in the alumi handle extention are for gaining access to the locking 6x32 setscrews that lock the handwheel and the leadscrew adjuster
The compound on the cross slide; the allen key has locked the compound at an angle to show how tapers can be cut; the bronze insert in the middle is the nut for the 1/4"x20 leadscrew (0.05"/rev)
The final normal setting for the compound slide; the access hole for the taper setting is now closed as it's quite far ahead of this position; also helps to keep crap out of the allen head; tool post is on; the round guide bars for the main way are visible too; these are Thompson shafting; held with 4mm capheads into a CNC machined 90dgr each side of the main bed; these are accurate to within 0.001
Shot of the collet set-up; also in the shot is the main leadscrew bearing (just under the collet chuck) this will support the 7/16"x20 (0.05/rev) leadscrew
The collet chuck still need 2 holes drilled into it for tightening; the adjusters for the main carrage can be seen too with locking nuts; these again like the leadscrews have teflon buttons to help maintain accuracy; the cross slide has smaller set screws for the same reason (2 small holes just above the main section of the carrage)
Drive end of the spindle; the 1.125 dia is threaded ready to hold the 8 step pulley; the main bearing can be seen; another is right behind the collet chuck; the spindle can take 0.650" through; the run out is 0.0004" at this time; once the drive is complete I'll grind it totally true with a pencil grinder in the tool post
I'm also going to add chinese scales and make the ShumaTech DRO; there will be a tail stock added and a 90dgr block to make the compound into a vertical slide; the tool post will be removed and a small vice added to hold small parts
Top speed wil be over 12,000 and lowest speed will be just over 1400 with 8 steps
One day (after my NC mill) I'll CNC it
I should add; the project was designed in SurfCam 2001; the machines used to make the parts were a Supermax 56 and a Fanuc wire
I don't work at that place anymore (projects like this are not allowed; and I had to hide it all the time); my new place the boss says "hey just build whatever you want" (in my time) The Mill project is coming nicely in SurfCam 2002 and I'll post a photo of the shaded surfaces soon
Last edited by Stevie; 02-15-2004 at 02:39 PM.
Very nice pictorial of your excellent work!
Very nice pictorial of your excellent work!
Bloy2004 does some really nice work and knows what nice work is, so that is a nice compliment to which I fully agree.
Nice work on the knurling, speaking of which I will post a question on in the correct forum.
Wow I must say that I'm very impressed. Its nice to work in a shop that will let you do your own projects in your spare time. Keep up the good work and post us on future progress.
It really is Superb workmanship and plan. Great pictorial representation to boot. Talent is easy to recognized in the work it does and as a novice I can see it here.
The round ways are interesting, did you build the ways or is it a part of an existing machine?
Phil, Still too many interests, too many projects, and not enough time!!!!!!!!
Vist my websites - http://pminmo.com & http://millpcbs.com
Hi Guys; thanks for the kind words (although some of the parts I'm "Embarrassed" about; could have made them better; I rushed them to get them out of sight again)
pminmo: no it's not part of anything else; I designed it to be that way; the cuts are 0.250" X 0.250" the round stock is 0.500" the Supermax cut the rabbits and I simply screwed the stock in place (quick way to make ways)
The Saddle is wire CNC EDM'ed to match the centers; 4 adjustment screws with the teflon buttons to keep it all nice and tight (tool makers love tight things ;-) )
Ken; the knurl is one of the things i could have done better; the cross slide one was tough as the stock I used only just made the part; I had nothing to hold on; the knurl puts soo much pressure on the bronze it was almost coming out of the 3 jaw (it was a scrap piece I used)
The mill project will be much better as now there will be no pressure to hide it; I've got it 50% designed; I have designed some parts a little different just like the Lathe project; after more than 35years in a trade you do learn something; and I'm almost to that age when stuff starts to fade from memory; the changes are to the head slide/motor area; I think it will be interesting to some
The lathe will be fully digital; I was going to go the chinese scale route; but after finding the linear optical encoder strips by US Digital I'll simply make my own fully enclosed DRO/slides using extruded alumi; plus the compound is only 2 1/2" of travel; so the optical route is much better
On another note for the lathe project; before i do go the whole hog CNC way; I'd like to try to make it stepper powered for the ways; but have it use a manual jog; is there a way to move the steppers with a jog dial; and have multiple resolutions by using a selector switch working in tandem with the jog dial; I'd love to have 0.1-0.010-0.001-0.0001" switchable and have the jog dial marked accordingly; even better would be 2 full sep jog dials (saddle and cross slide) the saddle could be swichable to the compound stepper
So has anyone tried this on a small scale; the full sized Supermax had the exact same setup for manual milling and for zero pick-up
For those interested in the CNC mill project; the travels will be 10" Z 10" Y and 26 or 28" X not exactly small; but still benchtop; I want it big enough for several projects i have in mind; one is a super small fully CNC mill using #17 sized steppers with 2X2X4" travels and a spindle speed of 100,000 rpm
Interesting,one is a super small fully CNC mill using #17 sized steppers with 2X2X4" travels and a spindle speed of 100,000 rpm
What will you use it for? Or just a show peice?
I like your lathe so far. Tool and Die makers always impress me because they are very fussy by nature, so the work they do is always impressive.
I wish it wouldn't crash.
actually the size would be ok for quite a few projects; you could even make a small RC aircraft engine with that size; granted a lathe would also be needed; but imagine the carbs and stuff it would make
Small engravings was my first thoughts on it; plus the "wow" that really works factor
I guess after seeing the 4mm ball screws you can get; my mind started to grind
As my regular job is not really Tool and Die anymore (just regular old General Machine work) I need to keep my hand in with design and toolpaths
I was working on a 12ft long stellite coated auger shaft this week; the flights and some of the working areas of shaft got re-welded up and needed to be re-machined to size 5.250" dia; with 0.125"/side stellite; needed a 63 finish (tough to get) I used a Makita hand belt sander 1"x30" to get the final finish; worked really good too; run the lathe in reverse (80rpm) and sand with Alumi oxide belts; don't go below 120grit and the stellite will spring to life
The Mill project will be all steel for the main frames of the machine; most likely 1/4 plate mig welded and stress releaved (over-night soak)
Another thought on the lathe; I'll be adding drilled holes with a div head; every 10dgr around the rear part of the collet chuck; with a indent shaft i can then lock the spindle ever 10dgr; I also bilt a small 2 way slide to mount above the spindle; this has a 30,000rpm air powered 1/4" spindle; with this i can machine stuff like hex's while the part is still on center; I have some 25mm anti-aircraft guns to make in 1/48th scale and the muzzle has 6 flash ports; I'll have to use a 0.01"ball mill to make them
Last edited by Stevie; 02-16-2004 at 08:47 PM.
I'm almost to that age when stuff starts to fade from memory
I knew we had something in common
I got a feeling this is going to be a great thread.
Don't quit on us now Stevie.
Ken; this July 22nd I'll be 51
Started my apprenticeship in England when I was 15; got payed 5 pounds a week; thats about 25cents/hour; and still managed to get blind drunk every Thursday and Friday night (hehehe)
blind drunk every Thursday and Friday night
And I bet every Saturday morning you said "I am never going to do that again" Right?