MACHINING a Rotary Table alignment tool
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- Опубликовано: 26 янв 2023
- #machining #alignment #rotarytable #millingmachines
Join me in this video as I use @Blondihacks design for a rotary table alignment tool to make machining radius super easy.
This video was a must before I move onto the next project the "Hemingway Knurling tool"
If you've enjoyed this video please subscribe
/ machiningwithjoe
Link to Blondiehacks Video
• Corner Rounding and En...
I'm loving that MT3 insert kit. I taught myself machining for my job and I'm always open to learning new stuff.
Thanks Joe. Excellent video mate.
If you want to keep all ten fingers you might want to looae the gloves. In our shop you would not be allowed near any spinning machine until you took them off.
To be honest, I agree on that
Hello Joe,
If you drill and tap the 6mm hole right through the taper you can then use a long screw to jack out the taper from the rotary table if it jams in there. Easier and quicker than disturbing the table to knock the taper out.
Steve
That’s a great idea Steve however I have not got a drill bit long enough to do so. Maybe if it becomes a major problem I will look into it 👍
Nice one Joe. I Would have used a small boring bar to bore out the final dia. at 18mm then face the bottom of the recess giving you a smoother finish for your inserts & a flat bottom.. Radius's.. Radii. Never the less a nice mod for your rotary table.
Yeah I’ve got to admit after using the tool now a few times I do wish I’d of used a boring bar to get that nice inside surface finish would make putting the inserts in a nicer slip fit.
you can also make a spring loaded center point to fit anything from a center punch to a 1 inch hole.
Awesome! Looking forward to seeing this in more action.
Thank you.
Thanks for the upload
Your welcome hope you enjoyed.
Nice work Joe, adds to the versatility of that rotary unit. Enjoying your vids and good to see you back at it. Take care and cheers mate!
Thanks Howder good to hear from you hopefully you’ll enjoy the new series of videos on the knurling tool build.
Hello Joe. Thank you for showing how you went about machining this morse taper adapter. Very interesting indeed. 👏👏👍😀
Your more than welcome by all means this method worked for me but if you need a very accurate taper then I would definitely follow Ades advise.
Here's another idea to locate the Rotary table center. Use an edge finder and dro half functions. You'll get within 5 microns or better, quicker than trying to align and get the spigot into the Rotary table slot.
Hey dude yeah that’s a great method of locating. Reason I went with this method is I like the simplicity of finding rotary table centre and then having a pivot pin to locate work onto. 👍
@@MachiningwithJoe that Morse taper locating boss is not hardened, physically locating by pushing the pin into it will wear out the hole edges over time unless your very careful. But yes simple.
Great video Joe! Well done mate!
Cheers Nick glad you enjoyed
Good video. The knurler will be a neat project.
Thanks Gerald, yeah look forward to having a larger knurling tool for this bigger lathe.
Cheers Joe
Your welcome Matt
Nicely done Joe. Gilles
Thanks Gilles.
Nice one Joe , have to make one fir mm cave, one tip regarding the morse taper some suppliers sell different MT raper adapters with hardened tapers and unhardend bits you can machjne
Hi Joe , this is great that you are moving on like this , I have the same rotary table by the way , really good , can I offer a little advise if I may . when you clock in the angle with your compound you did it well. the issue is that morse tapers are very fussy to lock and release properly so accuracy is really important . Maybe next time try this, centre drill a piece of stock in the chuck . then set up the centre to clock by putting the point in the centre drilled hole and then use a tailstock centre in the hole in the back of the morse taper to set the angle to be clocked between centres. ensure that your tailstock is well clocked first. this will put the part that you are clocking true to the axis of the lathe . you can check this by rotating the part before clocking the angle . then simply clock it in as you did and much closer results will come . Not a criticism at all and you will get close the way you did it . only trying to help. please don't take offence , certainly none meant only admiration you having a go . Cheers and keep it up , Ade
Hi Ade, thank you for the comment as a self taught hobbyist advise from people like yourself is priceless. How you have described the setup and process makes complete sense for getting really accurate and like for like tapers. I will definitely be giving this method ago next time I have to cut a taper. All the best and great work on that little engine so far.
Why are you wearing gloves near reciprocating machinery? You want to deglove a finger instead of a little knick or cut. Unreal.
I think this has been pointed out in all his lathe videos, but I guess sometimes people think it’ll never happen to them
Why not us a boring bar to clean up the walls?
Im looking at making something similar. But my lathe is much smaller. Any tips on how I would face off the MT2 as im not sure how id hold a tapered piece.
The system works great if you have holes in the part, I'll post a couple of links ar the bottom for options without holes in your part.
I guess you have had loads of crap about wearing gloves & I am not going repeat all the safety issues. I will add though, if you want to work in a professional toolroom you will have the piss taken out of you for your first hour until you get fired. There is nothing more reassuring than giving your tools - tool holders - spindle bores - parts - vice jaws - magnetic chuck etc.. a wipe with your bare hands to know they are clean. Using gloves embedded with tiny bits of swarf & filings will not clean any mating parts enough, especially if any part is magnetic.
I would consider drilling the mt holder through so it can be jacked out instead of having to remove the whole rt to get it out. Once you have centre drilled the holder - drill half way then proceed to turn the taper. The other end can then be drilled to meet the first hole then tapped when machining the counterbore.
When setting the compound for the taper it is important that the morse taper is running true for the dti to give the corect angle.
It looke like the tailstock was out a very long way when machining the holder. Was this because the toolpost was set at a wierd angle instead of square to the spindle. Was the compound slide right forward too. If these were changed to a square set tool & the compound retracted, the tailstock could be retracted for more rigidity.
I did not understand why the holder was roughly machined to length on the rt. Could the height have been measured then faced off to the correct length below the rt surface on the lathe.
I see that you discovered that end mills in the tailstock cut oversize, a quick light pass with a boring bar to any dimension would have given a nice round concentric hole. The size could then be replicated on the buttons. A flat bottom may not be necessary, it will be constant so the button heights can be made to suit.
For the button diameters I strongly suggest a 0-25mm external micrometer for the diameters as they probably need to be slighly under for a slip fit into the mating holes.
If you don't like using a dti to find the centre of the rt then using an accurate plug in a collet can be used. One tip is to have the rt unclamped so it can float to the mating position. Much easier than trying to move the handwheels.
Hope you find the tips useful & here are some links you may find helpful.
A quick setting method for a rotary table ( rt ) - ruclips.net/video/fbwWL1facGY/видео.htmlsi=IcIugernuKVUByhQ
Setting parts to different positions - ruclips.net/video/eQC-Su5hUu8/видео.htmlsi=K9N77j0Z2QXmabRM
A quick alignment tool to set parts parallel and at a known distance from the rt centre. - ruclips.net/video/jSKzVCTiYPg/видео.htmlsi=-sgbsHdOJrnJB7wU
Watch out for calipers. You have the a good one there but they're limited in accuracy. Flex, wear, violation of Abbe's law, etc, plague calipers. For precision fits, use a micrometer. Any cheap one will work but the 1" Mitutoyo digimatic is pretty nice, if it's not too dear.
Ok for this project but neither a Endmill or slot drill will generate a true flat bottomed hole. There is generally approximately a 2 degree clearance angle between the corner and the centre of cutter
Yeah completely agree looking back wish I’d of used a small boring bar to get a better surface finish.
Wow Joe go easy on your ‘hhh’, not every consonant requires to be followed by a ‘h’ :p’hhhart, t’hhhable, c’hhhut, c’hhharry on,…
just indicate the bore ffs......
Get those gloves off......I see so many wannabe machinists on RUclips, that don't know the first thing about shop safety
If you want to really find out if your taper is good then you should blue it and make corrections. Just plonking it in and saying it feels fine is a shite procedure. I will not smash that button.