Fitting an X-axis power feed to a Warco VMC mill

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Fitting an X-axis power feed to a Warco VMC mill

Home Forums Help and Assistance! (Offered or Wanted) Fitting an X-axis power feed to a Warco VMC mill

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  • #201467
    John Hinkley
    Participant
      @johnhinkley26699

      I've just spent two hours trying to fit the Warco-supplied power feed to my new Warco VMC mill, which arrived on Friday. For the life of me, I can't get the damn thing to go on! It's supplied with a casting which is for a Bridgeport that is obviously not needed. The "installation" manual shows a picture which indicates that it's just a matter of bolting it on and adjusting various gaps with the supplied shims. For a start, the threads in the end of the table are what seems to be a non- metric thread. The supplied bolts are, I think, 1/4 x 20 tpi and they don't go in th'ole. There also appear to be bits missing or different from the diagram e.g. the needle roller bearing inner race. Anybody care to offer some advice, please, before I completely lose patience with it?

      Obviously, I'll be on the phone to Warco on Monday morning, but in the meantime, I'd like to try to get on with it.

      Thanks,

      John

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      #32551
      John Hinkley
      Participant
        @johnhinkley26699
        #201474
        BC Prof
        Participant
          @bcprof

          I too had some issures when fitting the unit to my VMV in March last year. It is not as, the advertismnet suggests ,a simple bolt on addition

          From memory after throwing away the alloy casting for fitting to a Bridgeport I had to clean up the threads with taps

          Mine seemed to be OK for tpi but the holes was undersize . The bits supplied fitted OK but I had to machine about 6 mm from the end of the to allow the threaded collar to fit onto the endo of the leadscrew . It took some time to get the shim seltection correct to allow the correct clearence for the gear. Google Align to get help on setting up the clearence . The documentation gives he correct angular fee play needed between the gears . It is critical and took me several attempts to get it correct.

          I had an additional problem in that the transforner unit had a fault. The live 110V out to the socket was trapped under the terminal by the insulation. No Volts = No current = No power = Big Sulk .

          #201483
          John Hinkley
          Participant
            @johnhinkley26699

            Thanks, Brian. I was beginning to think that I'd been given the wrong unit. The only identification on the box is 3884 – but that isn't a valid Warco number, apparently. I don't give much for my chances of getting a suitable tap locally tomorrow, though. I'll still ring Warco on Monday, just in case I've missed something glaringly obvious.

            John

            #201486
            Lathejack
            Participant
              @lathejack

              Hi John.

              I have fitted a few of these Align table drives, not from Warco but from other suppliers. They all came with the hardened inner race for the needle roller bearing, which was needed. If yours is missing then did the box the drive unit came in show any signs of being already opened and the contents tampered with? It is not unheard of with some items.

              One job that can need doing before shimming the mesh of the bevel gears, but is sometimes overlooked, is to remove the table feedscrew end float relative to the table.

              If there is some feedscrew end float that is not removed first then the carefully shimmed gear mesh can alter as the table travels from left to right and back. As the table changes direction this forces the feedscrew mounted gear in and out of mesh with the table mounted drive unit gear.

              My earlier Taiwanese made Warco VMC has castellated nuts on the ends of the feedscrew which are used to carefully adjust the ball race bearings. The Align kit should also contain shims to adjust the the clearance between the handwheel dial and the drive unit body, a small clearance here keeps grease in and dirt and swarf out of the drive gears.

              Edited By Lathejack on 22/08/2015 20:20:05

              Edited By Lathejack on 22/08/2015 20:21:08

              Edited By Lathejack on 22/08/2015 20:21:49

              Edited By Lathejack on 22/08/2015 20:31:32

              #201502
              John Hinkley
              Participant
                @johnhinkley26699

                To Lathejack,

                Thanks for the info. My initial posting is, now that I go back and re-read it, a bit ambiguous. The inner race for the needle roller bearing is present, it's just that it is shorter than that shown in the accompanying diagram. Perhaps I'm missing a spacer, or haven't found it yet. I had a look at the Align video on youtube and that explained the shimming quite well. I'm going to have another go tomorrow but the lack of a 1/4 inch UNC tap will prevent me doing a great deal. At least I will be able to make a start by checking the backlash on the feed screw. Thanks for the heads-up on that one! I have to go to Dunstable on Monday afternoon so I think Chronos will be getting a bit more of my money as they stock taps in this size.

                John

                #201545
                BC Prof
                Participant
                  @bcprof

                  Hi John

                  Took my power feed off this morning to check what I had done . I knew that is wasn't a straight "bolt it on "

                  I made a 10.5mm spacer to fit onto the shaft and inside the needle roller bearing.so my assembly order is,

                  10.5mm long spacer , steel inner for needle roller bearing ,three shims to set gear clearence ,gear assembly,

                  dial assembly ,handle, tab washer , casellated nut.

                  I took the opportunity to clean up the edge of the scale assembly and to slightly inder cut it so that it forms a

                  better seal against muck getting into the gears.

                  With the spacer in place the axial load is transfered ,via the inner of the needle rollers not the cage, to the inner

                  of the ball bearing so tightening up the castellated nut does not affect the gear setting.

                  Warco tec support were very helpfu when i asked about having to machine the brass gear shaft l

                  Hope this helps

                  #203459
                  John Hinkley
                  Participant
                    @johnhinkley26699

                    Well, I got that all sorted, although I've yet to try it under power. I have today managed to mount the mill on its stand and had a brief look at the way in which I can mount the dro glass scales.. The one for the Y-axis is a 150mm unit. The Warco spec says that the travel is 152mm. I was prepared to sacrifice 2mm for the sake of simplicity. However, when I measured the ACTUAL travel – it turns out to be 170mm. My problem, then, is:

                    1. Do I limit the travel to 150mm and lose what might be a valuable 20mm in the process?

                    2. Get another glass scale of, say 200mm, and have a bit in hand? (Next size up from Warco is 300mm.) Or,

                    3. Something else?

                    Also, as I'm living in rented accommodation, I'm limited as to what I can do to the electricity supply in the garage. It's ¼ the size of my last garage so space is at a premium, too. I have provided myself with four outlets, two for the lathe and its light, leaving two for the Mill, power feed and DRO system. The power feed transformer unit is supplied with a 240V mains input lead which has terminals attached, i.e. no plug. Do I assume, therefore, that this can be wired into the Mill power distribution panel at the rear of the mill? If so, can anyone tell me where to make the connections, please? If not, I will wire the lathe light into the lathe supply plug to free up a socket.

                    John

                    #204737
                    Jon
                    Participant
                      @jon

                      1 Check the actual available travel of the scale. Marked 150 may well offer more then just centre up.

                      The Align units run off 110Volt and need a transformer £50 to £80. Mines wired direct in to the box no American plugs available. Personally would run it off the same socket as the DRO.

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