MT4 query

[mark smith 20Participant @marksmith20]

[mark smith 20Participant @marksmith20]

Hi,

Has any one seen or know if there are any type of MT4 shanks or adapters that are threaded with female M16 both ends , its to possibly hold a small boring head which has a M16 threaded spigot on top.

Thanks

Edited By mark smith 20 on 05/11/2016 16:41:05

Edited By mark smith 20 on 05/11/2016 16:47:33

[Raymond AndersonParticipant @raymondanderson34407]

Never seen anything like that before. Pretty rare I would think. Might be a case of make one up yourself. Nice little project.

[mark smith 20Participant @marksmith20]

Thought so , its for a mill but my lathe is only mt3 in the head stock so would be rather puzzling to try and use some kind of soft end MT4 arbor (which are available) and drill and drill /tap for M16??

[Neil WyattModerator @neilwyatt]

Why not fit it to an MT3 blank arbor and use an MT3-4 sleeve?

The sleeve will have other uses and one day you might want to bore something on the cross slide and an MT3 boring head could be just what you need

Neil

[mark smith 20Participant @marksmith20]

Ive decided to get a soft blank end arbor for now ,at least ill be able to use it in the lathe and mini mill for now whilst i think about how to use it in the Alexander mill that uses MT4 tooling and Deckel s20 x2 butress thead for draw bar etc.

The boring bar head is a pretty nifty (and probably expensive when new)Japanese job which has a M16 threaded spigot thingy on the end ,which i`ll fix to a threaded M16 hole in the blank arbor. So it will be removable and once i get the MT4 sorted ill be able to use it in the MT3 arbor on the lathe and hopefully a different MT4 arbor on the Alexander mill.

You can buy M16 to S20x2 adapters from Germany for around 10 euros each which is why i was hoping to find a MT4 sleeve like in the original post.

One question though i need to buy one or two M16 taps. Are they usually the M16 x 2 thread in the end of tooling or the M16 x 1.5 ???? I assume they are right hand threads?

Thanks

Its like the one in the photo but mines the slightly older version that takes 10mm square shank and 10 round bars in the face.

Edited By mark smith 20 on 06/11/2016 20:59:28

Edited By mark smith 20 on 06/11/2016 21:04:38

[Nick HulmeParticipant @nickhulme30114]

Posted by mark smith 20 on 06/11/2016 20:57:42:

One question though i need to buy one or two M16 taps. Are they usually the M16 x 2 thread in the end of tooling or the M16 x 1.5 ???? I assume they are right hand threads?

Mark,

You should be able to tell what pitch the thread is by measuring the spacing between peaks, you can measure across multiple peaks and dividing the measurement,

– Nick

[Martin ConnellyParticipant @martinconnelly55370]

If you have an M10x1. 5 tap or known M10x1. 5 screw you can use that as a thread gauge to see if yourM16 is 1.5 pitch.

Martin

[mark smith 20Participant @marksmith20]

Hi,

Martin the boring head spigot is threaded M16 x 2 .

I now have some M16 x 2 taps, being most of my stuff is imperial ,like larger drills. Will a 9/16" (14.2875mm)  drill be ok instead of the recommended 14mm tapping drill for the purpose of fixing the boring head to the end of a MT3 blank soft end arbor?

thanks

Edited By mark smith 20 on 09/11/2016 12:41:35

[JasonBModerator @jasonb]

Should be fine.

[MWParticipant @mw27036]

You'll want to make/get one with the shoulder flange so you've got something to grip when you come to tighten your chuck against it. Theres no purchase for a spanner on the plain sided one.

PS; You could get away with it if you have a drawbar to grip though. But i'd say the flange can only help you, would give the chuck a nice parallel face to sit on. 

Michael W

Edited By Michael Walters on 09/11/2016 12:38:43

[mark smith 20Participant @marksmith20]

Hi Michael not sure what you mean ? You mean on the arbor so i can tighten it along with the two flats on the boring head?

Heres what i have and plan to drill tap the arbor along with recess for the bit on the boring head. The arbor is 40mm diamter compared to 30mm for the boring head.

 

Edited By mark smith 20 on 09/11/2016 12:58:50

[MWParticipant @mw27036]

Ah, sorry, Yep i did mean two flat to secure it, that is important but i also though you were comparing styles of arbour, in the sense that i thought both of them were MT's. I now realize they are two components designed to go together.

Michael W

[mark smith 20Participant @marksmith20]

Well finally got it done for now for use on the MT3 mini mill, i think when i do it for the Mt4 with Deckel thread on the Alexander mill ill add a thread ring thingy so that i can get it out of the mt4 spindle easier.

The boring head is made by KYUSHUKOGU, who ive never heard of ,it cost £45 on ebay including shipping, no idea if i got a good deal or not but its very nicely made.

Ran into another problem as i finished my pulleys on the south bend started spinning without the spindle???? Cant figure that out as they are keyed to the head stock spindle shaft.

 

Edited By mark smith 20 on 09/11/2016 17:05:55

[Brian WoodParticipant @brianwood45127]

Hello Mark,

I can't follow your pulley spinning problem at all, can you restate it please, then we might be able to comment.

​Regards
Brian

​PS Nice work on the boring head by the way, it looks very business like

[mark smith 20Participant @marksmith20]

HI Brian , thanks, I must have had a senior moment , i had used backgear for a while and had released it but forgot to engage the bull gear

[Brian WoodParticipant @brianwood45127]

Hello Mark,

That makes it all clear, thank you for clearing it up

Regards
​Brian

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