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Thread: My Invicta 4M arrived
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27th September 2010, 03:54 PM #91SENIOR MEMBER
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27th September 2010 03:54 PM # ADSGoogle Adsense Advertisement
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27th September 2010, 07:13 PM #92GOLD MEMBER
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OMG Graziano I so knew that. I have some bulk brake clean that did wonders on the mill. I just needed someone to remind my stupid ass to use it.
Thanks
Stuart
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27th September 2010, 07:45 PM #93SENIOR MEMBER
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27th September 2010, 10:41 PM #94GOLD MEMBER
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I'll see what I can do Graziano.
Gear box is back on, I'll see if it holds oil tomorrow. I'm going to use the same oil as the lathe LOMA32, I hope the little glass tub oil level thingy doesnt leak. Wired the motor up, it seems to work ok.
I'm going to leave the "insides" so it maybe back together toworrow and cutting something, fingers crossed.
Stuart
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28th September 2010, 10:38 AM #95Mechanical Butcher
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To return briefly to the subject of these couplings, there's a downloadable copy of Hirth's USA patent: Shaft coupling - US 1660792 A - IP.com
There aren't any calculations, but it does state that the crests and roots of the teeth are made to converge on the coupling's centre line.
Machinery's Handbook has tables for the required angles for various teeth number, etc. Again, no actual calculations.
So, the requirement would seem to be to tilt the face of the blank to be cut vis a vis the cutter. But the PM photos don't seem to show this. Maybe it's not quite to Hirth's spec?
Jordan
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28th September 2010, 11:25 AM #96GOLD MEMBER
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Damn him, it seems Mr Hirth beat me by 84 years. Thanks nadroj I'll have a flip through Machinery's Handbook .
Ok next crazy idea. Has anyone ever put a grinding head on a shaper and made a surface grinder. Ok so you wouldnt be able to control the depth to the nearest 0.0001". I'm just talking about knocking off the "high" spots left from cutting.
Now out to the shed.
Stuart
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28th September 2010, 01:51 PM #97Distracted Member
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28th September 2010, 02:42 PM #98Dave J Guest
Hi Stuart,
I asked about this because I had a brain wave and thought of it. But it has already been done back in the 40's or 50's so it's not new. RC gave some info if you search the forum for my shaper thread you will find it. I found another one online and I will dig it out for you.
Mine is getting closer to a grinder, as I picked up 3 good 6inch bench grinders at the markets on the weekend. I have been looking for ages and then I find 3 at one time one was $20 one $25 and the last as they were packing up $15. The other 2 will be dedicated grinders for HSS and polishing. The mate was on my back to sell him one because I now have 5. I told him to get up early and go to the markets, but he is still usually in bed from a hang over, he can't have it both ways.
I also plan on putting a DRO on the shaper because I have a spare one in the cupboard off my old mill and a few different scales I picked up on ebay, so 0.01 could be possible out of the 0.005 read out resolution maybe.
Dave
PS
Still have not found the guy with the tube, it's always the way. I will be going to Moriset on the weekend where he usually is and the weather is looking fine.
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28th September 2010, 08:11 PM #99Senior Member
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YES!
I ran my shaper for a while then moved it. Of course I pumped all the little spring-lid oil cups full of oil before I used it (partly lubrication, partly over-compensation for previous owner's neglect).
Underneath there was a perfect match to the open area of the inside of the casting which painted the concrete with oil. Most of it came up with liberal applications of kitty litter (go for the home brand stuff) but the stain is still there.
A tray would also be useful if you wanted to add a coolant pump...
The grease you put on the big gear wheel should have tackifiers in it as well- other wise it will melt with the heat and fling off which will make more mess, but more importantly, deprive the gear of lubrication.
The early bird catches the worm! Don't get me wrong, I like a beer, but one's drinking should never interfere with the addiction of buying tools....
Now that is an awesome idea. Modern technology could breath new life into these machines.
One axis should definitely be added to the depth adjustment. This might be a drama because it moves with the slide and either flexible cabling or sliding contacts would be required.
Of course, turning your shaper into a cyborg might not appeal to you and if you have to rely too much on new technology to achieve the same results as the masters of yore aren't you missing the point?
If you aren't drilling a huge number of new holes to mount your scales I'm sure it would be okay. I've often considered adding a few adjustable limit switches to the cross slide so it turns off at a pre-determined point. Not hard to do - run low voltage (eg 24V AC) through the switches which activate a contactor with a 24V AC coil. The switch side of the contactor controls the motor current. Power is provided by a 240 to 24V AC transformer from Jaycar etc.
Working out the position of those limit switches with the help of a DRO would be truly awesome.
Watch here for the next installment of 'Pimp your Shaper'.....
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28th September 2010, 11:20 PM #100GOLD MEMBER
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Dave I should have realised all the good ideas for shapers would have been thought of years ago. I'll dig up the thread and have a look thanks. I was thinking about something like this, but with a remote motor.
http://www.micro-machine-shop.com/tool_post_grinder.htm
Using the spindle off and old saw table.
Still maybe I have enough jobs going on just now, I'll just wait until you work all the bugs out of yours
Your mate sounds lazier than me!!
As far as the tube goes, don't sweat it, the day I walk out to my shed and say "well everything is done except for the coolant system" I'll hold it against you...... that you have a little while before that's going to happen lol
Gerbilsquasher Now I'm thinking trays with kitty litter in them . I doubt I'll bother with coolant although if I do make it a grinder I'll need it.
I hadn't given the gears much thought yet. Wouldn't all grease have tackifiers? I was thinking wheel bearing grease, but like I said hadn't given it much thought.
The cross feed stop idea is great. Will be dead easy on mine because of the inverter all the controls will be 12V or 24V anyway. It will mean adding an extra level so it doesn't switch back on when you wind it off the stop.
Now to other news, IT WORKS!!!!!!!!!!!!!!!
Put some oil in the gearbox and the ram back on. (anyone have any idea how far up the glass tube the oil level should be? Think I'll err on the side of "to full")
Hope the oil isn't all over the floor in the morning.
Gearbox is noisy as but everything seems to move as it should.
Didn't cut anything because I haven't put any grease on the gears but all the oiling is done.
Still need to clean the vice and table
Stuart
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29th September 2010, 12:51 AM #101Dave J Guest
Stuart,
That link is dead.
Dave
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29th September 2010, 01:06 AM #102GOLD MEMBER
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Fixed I think
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29th September 2010, 01:24 AM #103Dave J Guest
I am just going to try a 6inch bench grinder mounted with new bearings in it.
Cheap and easy.
The spot where the tool slide is big enough to mount it strait on mine.
I have been offered a surface grinder for $800, will see what happens.
Dave
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29th September 2010, 04:08 PM #104GOLD MEMBER
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It shapes!!!!!!!!!
The wiring is still a mess.
0 effort went into the cutter. Its the cutter that was in the second tool holers I bought at a market.
Doesnt sound the best at each end of the stroke but maybe thats because the side cover is off(and its a long time since I heard one of these working anyway)
I'll see if I can get a video together
Thanks for your help guys.
Stuart
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29th September 2010, 11:53 PM #105GOLD MEMBER
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Made a finishing tool, I think it came up ok for a first attempt. Not the best picture I ever took though I'll try for a better picture tomorrow. The video I took is 56meg
Dave I found your thread, that link RC gave you is pretty much what I was thinking of, you might be right though, the belt to use a spindle with a remote motor might be worth more than a bench grinder.
Stuart
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