What's new

Search results

  1. W

    Power HackSaw

    Here is an old thread with some more info/pictures. Interesting to note that yours has a wooden connecting rod too... https://www.practicalmachinist.com/forum/threads/video-of-millers-falls-saw.114373/
  2. W

    Video of Brown and Sharpe 00 screw machine running

    On a brown and sharpe machine like this it takes the same amount of time to switch to a slower speed as it does to reverse the spindle, so the only real gain from an opening die is being able to pull the die off faster than the pitch of the thread.
  3. W

    Video of Brown and Sharpe 00 screw machine running

    Backwards rotation is not faster per se. I think the confusion comes from the fact that most screw machines have one forward and one reverse speed which can be geared or belted to run at different speeds. Typically the thread being cut is right hand, whether with a tap or die. The threading...
  4. W

    Video of Brown and Sharpe 00 screw machine running

    The finished piece is 1.115 long. I did not have any length variation, but the end forming tool which rounds the end of the piece would control the length, not so much the stop. I only allowed about 0.01-0.015 for the end form tool to clean up when I set the stop, so it must have been feeding...
  5. W

    Video of Brown and Sharpe 00 screw machine running

    The die holder has axial float to allow for slight deviations in feed vs. lead, and the spindle does reverse. The die is a split button type. All operations other than threading are done in reverse at 1977RPM, threading is forward at 400 RPM. There is a view of the forward/reverse clutch...
  6. W

    Video of Brown and Sharpe 00 screw machine running

    The older machines would double index by placing a second pin on the Geneva crank, but then you would be limited to three tools as it would double index every time. The newer machines did away with that option. Although there is wasted motion, there is no wasted time, as during the indexing of...
  7. W

    Video of Brown and Sharpe 00 screw machine running

    Made a small run of parts in my 1950's Brown and Sharpe screw machine recently and thought others may be interested in seeing it run. Material is 5/16 dia 12L14 steel, thread is 1/4-28. This part has a 16 second cycle time. https://m.youtube.com/watch?v=ga9T70S1XTg
  8. W

    WANTED! 14-18 x ~80 Engine Lathes, Excellent Condition Only, TOP $$$ paid

    Looking for American made heavy engine lathes, LeBlond, American, Lodge and Shipley, and possibly Monarch. Prefer taper attachment, hard ways, MUST be in excellent condition. Will pay top dollar for the right machines.
  9. W

    wide bed Leblond video

    Here is a short video of the wide bed Leblonde lathe that came from the NY power authority with a pretty large work piece. The part is a drum from a machine that makes molded paper items (like the four place coffee carriers). We are turning the journal for a repair sleeve. leblond lathe - YouTube
  10. W

    Synchronized hydraulic cylinders?

    Only going up 3 inches...
  11. W

    Synchronized hydraulic cylinders?

    The fixed end of the cylinders is linked, but not the rod ends as on your tractor. The percentage of load has no effect on the fact that the cylinder with the least resistance will move first. I cannot have a guide rail afixed to anything, as this unit is mobile. Right now I have it so that...
  12. W

    Synchronized hydraulic cylinders?

    Steve- If you take a pump and tee it to two identical cylinders with no load one will move before the other. A difference of a few pounds resistance in the packing alone will cause the oil to go the easiest way first. On your tractor the cylinders are not truly independent as there is a loader...
  13. W

    Synchronized hydraulic cylinders?

    tolerance on tilt is pretty large in reality, but for the sake of discussion let's say it is small. 2500 lbs 60" x 60" x 30" tall
  14. W

    Synchronized hydraulic cylinders?

    Hu, Interesting idea. I am now thinking four 5T standard cylinders all being pushed down upon by a standard 20T cylinder. Each of the 5Ts would be plumbed to an individual 5T lift cylinder, which would make them move evenly. Just like you describe, but all off the shelf parts (other than a...
  15. W

    Synchronized hydraulic cylinders?

    GoeD, Not quite sure what you mean by "in series".
  16. W

    Synchronized hydraulic cylinders?

    The mechanical options are out due to configuration/space constraints. The thought of four identical pumps was the first obvious solution, but cost and space are prohibitive. I was hoping someone had a down and dirty cheap method. The idea of a flow divider is just what I am looking for, but...
  17. W

    Synchronized hydraulic cylinders?

    I have a project that requires four Enerpac single acting cylinders to lift an apparatus about 3 inches. One cylinder is located at each corner of the load, which is symmetrical in shape and weight distribution. This is a permanent installation, and something that will be operated frequently...
  18. W

    Removing tapered pins

    It seems that a good portion of the pins that I have removed have already been attempted by someone else who gave up. Usually the small end, if protruding from the hub, is mushroomed over. I grind the small end flush, then give the big end a sharp blow. This does two things: it get s the pin...
  19. W

    Have any cool metalworking photos?

    Here is a CBN boring tool cutting a drill bushing to a custom size.
  20. W

    Wide Bed/Big Swing Leblond Lathe & Cinncinnati Hypro Planer Mill

    Adam, That is a good question. We did give the planer mill some thought. There are a couple of reasons why we didn’t buy the planer mill. We are currently out of space for any new machinery that size. In other words something must go out to make room for anything new. That was the case...
Back
Top