Announcement

Collapse
No announcement yet.

make one? (BP slotting head)

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • make one? (BP slotting head)

    maybe a 6" stroke version.

    if i double what i think it'll cost to make, i'm still under the coast of a good (full) broaching set.

    does the original slotting head have a clapper? what if i make one without?

    i hear they can be had for cheap, but not 'round these parts -- plus it might make an interesting project.

    thoughts? warnings?
    -tony

  • #2
    Tony,
    Never made one but a few years ago I supplied a load of old machine parts to a retired guy who did build one.
    Main items were an angle plate and a machine slide that was about 7" - 8" wide and probably had a working stroke of 5" or so.
    I did see it when it was done but it was a while ago.
    I could call round and get some pics if you want.

    John S.
    .

    Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



    Comment


    • #3
      If you can find some pictures, I too am interested.

      David

      Comment


      • #4
        Won't be shiney
        .

        Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



        Comment


        • #5
          pictures would be great.

          i don't want to make make my stroke-adjust that intricate, probably just a set of spiraling holes. shouldn't be too hard... maybe 5 positions, tops.

          tricky part will be mounting it to the BP turret.. that cast hole is hollow inside! i dont plan on making provision for tilting the head.. so getting the mount square/perpendicular might be tricky.

          all else fails: shims!
          -tony

          oh.. if i make it only one speed (say, 100 strokes/min) -- bad idea? 99% of the time it will be cutting keyways 4mm to 12mm wide. the usual lot is about 100mm long. figure a 120mm max stroke, at 100strokes/min should be okay?

          i'll be using HSS blanks (from the lathe).. i can't imagine 500 strokes/min being a good idea. then again, i've never used a slotter/shaper.

          *any* input = golden.

          Comment


          • #6
            I don't have a b/p manual but I know that somewhere I have seen an exploded view of my shaper head. I can't promise anything but I will keep looking.

            ------------------
            Paul G.
            Paul G.

            Comment


            • #7
              paul,
              already have the exploded drawings, thanks tho.
              i'm curious to get general shaper/slotter info.

              ie:
              1. how many strokes/min?
              2. how to sharpen a shaping tool?
              3. should i provide rake angle in the toolholder, or grind the tool?
              4. if i dont have a clapper, is it a big deal?

              -tony

              Comment


              • #8
                Don't get too excited about the BP slotting head - yes they are handy at times, but I would much prefer to broach a keyway if possible. I guess you need a press as well as a broach set, but a press is pretty useful too!

                Most of the slotting I did was about 2" deep, there was always some tool deflection, and it was easy to stall the slotter - they are light weight.

                So, handy, but in my opinion, not a very precise method of machining.

                Comment


                • #9
                  Come to think of it, I do have shaper drawings on a bp cdrom.. NOW, finding that rascal will be a chore. If I do I'll post the picture.

                  David

                  Comment


                  • #10
                    Man I could have used one today, had to do a 1/4 keyway on a 1 1/8 blind bore. Did it on the lathe and about wore out my arm and back.

                    Comment


                    • #11
                      I ran across this looking at something else. It is a combo machine made by Arboga, but shaper head is simple. It might give some of you ideas. http://www.lathes.co.uk/arboga/page5.html
                      Jim H.

                      Comment


                      • #12
                        Somebody put a Volstro head on ebay, and put a $350 buy it now. It was sold before I got to it. I wanted one to add to my dustcollectors.
                        My Bp head doesn't have a clapper box.
                        David from jax

                        ------------------
                        Have gun, will travel.
                        A serious accident is one that money can't fix.

                        Comment


                        • #13
                          Not sure you'd call it a clapper box, but there's something resembling one built into the ram on one we have at work. Peter S nailed it. They are a lightweight tool, ours stalls out in steel taking .003 cuts with a 1/16" wide parting tool. You'll grow old trying to finish a 3/8" keyway with one.
                          Pete

                          Comment

                          Working...
                          X