Lever operated tailstock attachment Myford

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Lever operated tailstock attachment Myford

Home Forums Manual machine tools Lever operated tailstock attachment Myford

Viewing 25 posts - 1 through 25 (of 41 total)
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  • #588762
    Ian Montana
    Participant
      @ianmontana44925

      Hi all

      Dipping my toe again into the pool of knowledge

      I have a lever operated tailstock attachment for my ML 7

      Can someone please explain what its used for

      Many Thanks

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      #14496
      Ian Montana
      Participant
        @ianmontana44925
        #588763
        ega
        Participant
          @ega

          Lucky you!

          It's a desirable replacement for the standard screw feed – quicker, more sensitive action for drilling with the ability to retract rapidly.

          #588764
          Ian Montana
          Participant
            @ianmontana44925

            They are selling for a silly sum – that makes sense because the diameter of the hand wheels and the diameter of the tail stock lead screw makes it a little difficult

            Thanks Ega

            #588767
            Baz
            Participant
              @baz89810

              I think they are advertised for silly money, not sure if they actually sell for it, I have seen a dealer in the south west advertising one for over a year now and he hasn’t sold it.

              #588769
              Robert Butler
              Participant
                @robertbutler92161
                Posted by Ian Montana on 08/03/2022 15:22:09:

                They are selling for a silly sum – that makes sense because the diameter of the hand wheels and the diameter of the tail stock lead screw makes it a little difficult

                What makes sense ???????

                Robert Butler

                #588771
                SillyOldDuffer
                Moderator
                  @sillyoldduffer

                  The lever action is excellent for drilling lots of holes quickly with no particular need for depth accuracy. A conventional tailstock provides good accuracy but slows drilling down if you're in a rush. Nice to have both.

                  Of the two, I prefer conventional because most of the drilling in my workshop is done on milling machine or pillar drill, and for most purposes they do a better job faster. Lathe drilling is still important, but – for what I do – a lever action tailstock isn't a big deal. It depends – others love 'em.

                  In the past, Myfords were often put on repetition work where accessories such as adjustable depth stops, lever tailstocks, and tailstock turret tool-holders are the bees knees. Although there must be lots of exceptions, I suspect most of us rarely do repetition work.

                  Order a copy of L.H.Sparey's "The Amateur's Lathe" : he describes and explains most Myford-era lathe work brilliantly.

                  Dave

                  #588774
                  David George 1
                  Participant
                    @davidgeorge1

                    There is a copy of the tailstock lever action being cast for the M Type lathe. I don't know if it is adjustable for other lathes as I have yet to see one in the flesh.

                    5.jpeg

                     

                    David

                    Edited By David George 1 on 08/03/2022 17:25:45

                    #588783
                    ega
                    Participant
                      @ega
                      Posted by SillyOldDuffer on 08/03/2022 16:44:08:…

                      Order a copy of L.H.Sparey's "The Amateur's Lathe" : he describes and explains most Myford-era lathe work brilliantly.

                      LHS was a convert to the advantages of the lever feed tailstock: "A few months after obtaining my ML.7 lathe I fitted this attachment … since when – if may coin a phrase – I have used no other." (from A Man and His Lathe).

                      He also points out the advantage of easier self-feeding when using taps and dies and the easier use of reamers (where feed and withdrawal should be rapid).

                      TEE Publishing may still have copies of this excellent little book.

                      #588795
                      Neil Lickfold
                      Participant
                        @neillickfold44316

                        They work well, but secondary drilling of brass with a normal drill bit, they can bite in. A split collar can be made to go onto the shaft and be used as a positioned stop in the back of the unit. They are just as fast as the rack and pinion tail stock units, and the rack and pinion gives a much longer drilling length or reach. The rack and pinion is not as sensitive as the lever one, but in saying that, I have successfully drilled 0.3mm holes for 3d printer nozzles on mine in both brass and steel. I own both having 1st bought the lever one, then bout the rack and pinion with the indexing drill holder attachment. After the one job I did with the indexer drilling, have never used it again, but have never removed the rack and pinion unit either or used the original hand wheel unit. But have kept it for the one day. My tailstock now has a sprung fit caliper holder for a cheap digital read out, and I have made a split collar to be used for a physical stop for drilling constant depth operations.

                        Neil

                        #588808
                        Ian Montana
                        Participant
                          @ianmontana44925
                          Posted by Robert Butler on 08/03/2022 16:20:02:

                          Posted by Ian Montana on 08/03/2022 15:22:09:

                          They are selling for a silly sum – that makes sense because the diameter of the hand wheels and the diameter of the tail stock lead screw makes it a little difficult

                          What makes sense ???????

                          Robert Butler

                          What it is ysed for

                          #588809
                          Ian Montana
                          Participant
                            @ianmontana44925

                            Has anyone got one fitted to their machine

                            Id appreciate a picture

                            Thanks

                            Ian

                            #588810
                            MikeK
                            Participant
                              @mikek40713
                              Posted by Ian Montana on 08/03/2022 20:11:16:

                              Has anyone got one fitted to their machine

                              Id appreciate a picture

                              Thanks

                              Ian

                              Is this it here?…

                              **LINK**

                              #588814
                              Anonymous
                                Posted by SillyOldDuffer on 08/03/2022 16:44:08:

                                …no particular need for depth accuracy

                                …most of us rarely do repetition work

                                Lever operated tailstocks often come with a stop for accurate, and fast, depth control.

                                Some of us do repetition work:

                                studs_me.jpg

                                nuts_me.jpg

                                All done on a lathe with a lever action tailstock.

                                Andrew

                                #588816
                                Ian Montana
                                Participant
                                  @ianmontana44925

                                  This is an excellent forum thanks for all of replies 😀

                                  #588818
                                  Robert Butler
                                  Participant
                                    @robertbutler92161
                                    Posted by Ian Montana on 08/03/2022 20:10:11:

                                    Posted by Robert Butler on 08/03/2022 16:20:02:

                                    Posted by Ian Montana on 08/03/2022 15:22:09:

                                    They are selling for a silly sum – that makes sense because the diameter of the hand wheels and the diameter of the tail stock lead screw makes it a little difficult

                                    What makes sense ???????

                                    Robert Butler

                                    What it is ysed for

                                    Ian, thanks for clarifying that, it was the justification I was struggling with, "because the diameter of the hand wheels and the diameter of the tailstock leadscrew makes it a little difficult", this didn't seem to have any relevance.

                                    On the ML7 the hand wheel and trust plate is removed and the device fitted in place. This differs from the S7 where the tailstock barrel is replaced and the attachment fitted with an integral bearing.

                                    Robert Butler

                                    #588821
                                    Georgineer
                                    Participant
                                      @georgineer

                                      I love my lever attachment, with one reservation. The handle sticks out a long way and catches me when I'm walking past in my cramped workshop. I've taken to removing the handle when not using it.

                                      George

                                      #588822
                                      Peter Spink
                                      Participant
                                        @peterspink21088

                                        I have the rack version on mine – wouldn't be without it!

                                        #588824
                                        Hopper
                                        Participant
                                          @hopper

                                          The other advantage of a lever action tailstock is it gives you a more sensitive "feel" when drilling small holes so you don't end up putting too much pressure on those small drill bits. It also allows a quicker and more sensitive "pecking" motion when withdrawing the drill momentarily to clear swarf from the flutes. Doing the same by winding the tailstock handwheel is cumbersome by comparison. The lever action is more like using a drill press laid down horizontal. Quick, easy and sensitive. Well worth having.

                                          #588829
                                          ega
                                          Participant
                                            @ega

                                            MikeK's link shows the ML7 attachment.

                                            If anyone is interested, there are photos of my customised version for the Super 7 in my Miscellaneous album (search for 645 and 646).

                                            My custom handle can be instantly released/clamped to adjust the leverage or to move it in out of the way or even removed completely to use it as a drift to release tailstock tooling.

                                            #588854
                                            Hopper
                                            Participant
                                              @hopper
                                              Posted by ega on 08/03/2022 23:18:41:

                                              MikeK's link shows the ML7 attachment.

                                              If anyone is interested, there are photos of my customised version for the Super 7 in my Miscellaneous album (search for 645 and 646).

                                              My custom handle can be instantly released/clamped to adjust the leverage or to move it in out of the way or even removed completely to use it as a drift to release tailstock tooling.

                                              So, what does one do to use a tailstock centre with a lever-action set-up? Is there a cunning way to apply carefully adjusted preload to a centre so it neither burns out nor is loose? And to lock it in that position as quickly and easily as the standard handwheel and thread set-up? Or does one have to remove the lever set-up and put the handwheel back in place? Or do you just apply the pressure with the lever and rely on the tailstock barrel lock to hold it in place under load?

                                              #588855
                                              Hopper
                                              Participant
                                                @hopper
                                                Posted by Georgineer on 08/03/2022 21:56:45:

                                                I love my lever attachment, with one reservation. The handle sticks out a long way and catches me when I'm walking past in my cramped workshop. I've taken to removing the handle when not using it.

                                                George

                                                Can it not be rotated so the lever sticks upwards?

                                                #588878
                                                SillyOldDuffer
                                                Moderator
                                                  @sillyoldduffer
                                                  Posted by Hopper on 09/03/2022 09:43:33:

                                                  Posted by ega on 08/03/2022 23:18:41:…

                                                  So, what does one do to use a tailstock centre with a lever-action set-up? Is there a cunning way to apply carefully adjusted preload to a centre so it neither burns out nor is loose? And to lock it in that position as quickly and easily as the standard handwheel and thread set-up? Or does one have to remove the lever set-up and put the handwheel back in place? Or do you just apply the pressure with the lever and rely on the tailstock barrel lock to hold it in place under load?

                                                  Good question! Lever-action is great for drilling, but what about everything else? My feeling is screw versus lever is another horses-for-courses question:

                                                  IF (lots of drilling) THEN lever ELSE screw

                                                  Dave

                                                  #588883
                                                  Anonymous
                                                    Posted by Hopper on 09/03/2022 09:43:33:

                                                    …what does one do to use a tailstock centre with a lever…

                                                    The lever operated tailstock on my cylindrical grinder uses a spring to load the dead centre.

                                                    Andrew

                                                    #588885
                                                    Hopper
                                                    Participant
                                                      @hopper

                                                      I'm thinking of having five bob each way and making a lever action "sensitive" attachment that fits into the MT2 taper in the existing tailstock, using a nice Jacobs 3/8" chuck I have kicking around. Handy for drilling small and medium holes then easily popped out to make way for a centre or bigger chuck.

                                                      Myford call them a sensitive drilling attachment but I think I will make mine a bit bigger for general use.

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