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New machine gloat (lots of pics)

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  • #91
    At this point I'm pretty much going to have to make one.... but the Atlas 10-12" (commercial model) has the correct gear. I may just snag one of those in the future, and make a housing out of bar stock that looks like South Bend.

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    • #92
      Originally posted by 754 View Post
      I had mentioned tilting the gear for cutting, I should also mention, I believe it should be plunge cut, so teeth are curved to fit screw with more contact.. could be wrong , but it won't wear fast.
      That's best for gears with some pressure on the teeth. I have done that, and assume it would be better in most cases, although cutting with a proper worm hob is the best.

      I believe that all the SB thread dials had ordinary helical gears, no plunge cut. There is essentially no pressure and little wear involved.
      1601

      Keep eye on ball.
      Hashim Khan

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      • #93
        Originally posted by J Tiers View Post

        That's best for gears with some pressure on the teeth. I have done that, and assume it would be better in most cases, although cutting with a proper worm hob is the best.

        I believe that all the SB thread dials had ordinary helical gears, no plunge cut. There is essentially no pressure and little wear involved.
        I have seen people use ordinary spur gear for them, and tilt the housing a bit to get the helix angle. But the problem for me is finding a gear that is wide enough not to get caught in the keyway and chewed up.

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        • #94
          Originally posted by nickel-city-fab View Post

          I have seen people use ordinary spur gear for them, and tilt the housing a bit to get the helix angle. But the problem for me is finding a gear that is wide enough not to get caught in the keyway and chewed up.
          If one gear is too thin, why not use two doubled up?

          -js
          There are no stupid questions. But there are lots of stupid answers. This is the internet.

          Location: SF Bay Area

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          • #95
            Originally posted by Jim Stewart View Post

            If one gear is too thin, why not use two doubled up?

            -js
            Yeah its possible but I'd rather avoid that unless I have to.

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            • #96
              Not a big deal, just pin them
              for appearance and to same time, you may want to buy a printed housing, and make or source a gear.
              Last edited by 754; Yesterday, 07:00 PM.

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              • #97
                Originally posted by 754 View Post
                Not a big deal, just pin them
                for appearance and to same time, you may want to buy a printed housing, and make or source a gear.
                Yeah, it would sure be easier, but what's the fun in that? I figured source a gear and make the rest. Probably learn a bunch along the way.

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