morse taper

[dw dwParticipant @dwdw40549]

My myford lathe has a 2 morse taper tailstock. I have drill with a 3 morse taper. Any idea if there is a tool/sleeve to let me put the 3MT drill into the 2MT tailstock. I have looked on net only found 3mt accepting 2mt drills. All the best DW.

[dw dwParticipant @dwdw40549]

[HopperParticipant @hopper]

ARC EuroTrade sells them. Search for Morse Taper Shank Extension Sockets.

Or you can chuck up the drill in a suitable sleeve and turn the shank down to MT2?

Edited By Hopper on 14/10/2016 10:37:39

[Brian GParticipant @briang]

If there is enough space between the tailstock and the workpiece for the 3MT drill and its shank, you might use a "Jump Sleeve" like this **LINK** (usual disclaimer – I am sure there are plenty more out there). If you haven't got one already you will also need an extraction wedge.

Brian

[Ian ParkinParticipant @ianparkin39383]

Generally the morse taper will come out of the chuck and then you could buy or make a new spindle with a mt2 and whatever end to suit the chuck

The spindles/arbours are only a £5 or so

Edited By Ian Parkin on 14/10/2016 11:42:16

[dw dwParticipant @dwdw40549]

thanks for all the replies, spent so long on the net that I didnt think I would find anything. Am new to lathes so think making a MT might be beyond me. Rgds DW.

[Nigel McBurney 1Participant @nigelmcburney1]

Using a jump up sleeve i.e. 2 to 3 Morse on a Myford is a bit naughty ,it will severely strain the tail stock,a drill jammed could damage the key and keyway in the tailstock.The best way would be to mount the drill on the saddle, hardened sleeves are available which are parallel on the o/dia and have a morse taper on the I/dia, A block of steel /iron or even ally can be mounted on the cross slide and a hole bored from the main spindle (which gives correct centre height) to suit the sleeve, the sleeve can be secured by set screws or other means,I would not use the power feed on a small lathe ,on larger lathes it was quite usual, I have a Dickson tool post on my Colchester master,one tool holder is bored 2 mt and can be useful if a lot of holes in tough material have to be drilled with saddle power feed as it does save extra wear on the tail stock,

[dw dwParticipant @dwdw40549]

Thanks Nigel for the warning, I have ordered a jump up sleeve, but will give what you say about cross slide mounting some thought as that does sound less stressful.

Edited By dw dw on 17/10/2016 09:21:32

[Brian WoodParticipant @brianwood45127]

Hello DW,

​One extra tip to bear in mind as well if you are intending to drill using a holder on the X slide—use the tailstock to push from the other side rather than use the hand feed for the saddle, it is kinder on all components and all the thrust will be in line with the bed and headstock bearings that are built to handle it. Feed gently too, I have no idea how big your 3 MT drill is, but the extra cutting length of the big drill lips will add to the loading and on break through could very easily snatch badly.

Regards
​Brian

[old AlParticipant @oldal]

Why cant you bore the hole

[Clive HartlandParticipant @clivehartland94829]

If you have a center in the end of the drill morse taper, the using a Drive dog, clamp it on the drill, maybe grind a small flat on the drill. Then set up the drill on the center in the tailstock and bring up to the work and let the tail of the drive dog rest on the top slide. and feed in using the tail stock very carefully and slowly. Ensure you have enough length on top slide to complete the cut. No need of MT ext.

Clive

[dw dw 1Participant @dwdw1]

Clive there is a center in the drill end but I am confused as to where the drill goes, in the chuck or in the tailstock (cant fit it in tailstock as drill has 3MT end)?

Rgds Dw.

[dw dwParticipant @dwdw40549]

Morse adaptor 3 down to 2 in lathe. Any ideas if this set up will be too much for the myford 7? Rgds DW.

[mick70Participant @mick70]

did at club i belong to but was very gentle was only 24mm hole.

i was prob over cautios but bid build up to it in sizes.

[dw dwParticipant @dwdw40549]

[dw dwParticipant @dwdw40549]

So very slowly & using many smaller drill holes to build up to full bore. Rgds DW

[Clive HartlandParticipant @clivehartland94829]

Dw, the tail stock center supports the end of the drill, the Drive dog tail rests on the flat surface of the top slide. Feed the drill to the job in the chuck and then apply feed by the tail stock.

Clive

[Martin ConnellyParticipant @martinconnelly55370]

Dw think of it a bit like the method used to keep a tap normal to a hole using a sprung centre in the end of the tap only in this case with a solid centre.

**LINK**

Martin

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