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Type: Posts; User: 706jim

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  1. Replies
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    Interesting how VDF positions the drive motor so...

    Interesting how VDF positions the drive motor so that the machine footprint is extended from what pretty much everyone else does. We had an older VDF which required dropping a lever on the feedbox to...
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    Well I think your end product looks just lovely!...

    Well I think your end product looks just lovely! Casting turned out well too. Not many take this task on these days.
  3. I took a course on a Fanuc 3000C back in 1978....

    I took a course on a Fanuc 3000C back in 1978. All we had was a control turning a couple of servos. Not a lot to be learned there. Many years later we now have several Haas mills and simulator...
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    No idea of what money they're asking for this...

    No idea of what money they're asking for this thing. IMO, you would be better off looking at a real machine a few years old if you actually expect it to make anything. And from what I can see it's a...
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    1/4" endmill 4" long. Yikes! I once used a...

    1/4" endmill 4" long.

    Yikes!

    I once used a 1/4" two inch long 4 flute HSS to cut a slot. Only cutter I had that would reach. It deflected enough when climb milling to cut the far side of the...
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    Has anyone here ever seen a Fanuc system 7M? One...

    Has anyone here ever seen a Fanuc system 7M? One of these appeared with a Makino VMC in 1979 where I worked. The TV was actually a separate unit mounted on top of one of the control cabinets.

    And...
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    Some time ago I posted a short video of our tech...

    Some time ago I posted a short video of our tech tapping holes in mild steel using an impact wrench. Until I witnessed it I didn't believe it would work. Seems that the vibrations loosened up the...
  8. When I started work at my college, all of the...

    When I started work at my college, all of the machines were glued to the floor with a product I think was called "Unisorb". The boss thought it was a great idea. I think it would have been maybe for...
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    While I'm not familiar with your Colchester...

    While I'm not familiar with your Colchester lathe,I know that the acceptability of reversing the feedbox while it is rotating is largely dependent on its rpm which of course is related to spindle rpm...
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    Most of my programming was done at a school. To...

    Most of my programming was done at a school. To simplify calculations for imperial taps I just multiplied TPI by 10 for the rpm. So 10-24 would rotate at 240rpm and 10ipm feed. 3/4-10 100rpm 10ipm...
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    From my experience selling things, you should put...

    From my experience selling things, you should put the asking price in the ad.

    Or otherwise don't bother placing the ad.
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    When I was attending university, my mentor was an...

    When I was attending university, my mentor was an engineer from England. There, engineers had to be able to run brakes, punch presses, lathes etc and possibly pour castings. In other words, have a...
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    The Graziano could be used as a semi production...

    The Graziano could be used as a semi production machine. The five position stops could be set up so that a repetitive job would require less measuring. Not a turret lathe, but faster than measuring Z...
  14. I never thought about heat. Mine is in an...

    I never thought about heat. Mine is in an unheated garage. It works ok when cold but there are times when it spins slowly in the neutral position. As this machine led a sheltered life in a warm...
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    The five position lever on the feed rod is to set...

    The five position lever on the feed rod is to set Z axis automatic feed stops. The "cam" lever under the feed direction selector is to set the resistance that the auto feed will kick out at, hence...
  16. Looks like it's been dropped. Was this shipment...

    Looks like it's been dropped. Was this shipment insured?
  17. I recall being asked by a supervisor why we...

    I recall being asked by a supervisor why we didn't stop our Whitney punch press to remove a sheet metal corner slug. Whitney taught us to just nibble the whole thing out if it was ten hits or less.
    ...
  18. Thread: Tapping m6x1.0

    by 706jim
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    I've said it before: There has to be more...

    I've said it before: There has to be more interaction between designers and builders. This is just the latest example.
  19. And DON'T TALK to anybody!

    And DON'T TALK to anybody!
  20. You beat me to it! Minimum Z is just that in a...

    You beat me to it! Minimum Z is just that in a G76, but the 1/2 width of the insert has to be considerd if you set your offset to tool tip center.

    Like I do.....
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    As a student I discovered that methanol and...

    As a student I discovered that methanol and acetone worked well for tapping aluminum. One benefit it the rapid evaporation rate that helped the chips fall right off of small taps. It makes sense that...
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    U and W for incremental commands. X and Z for...

    U and W for incremental commands. X and Z for absolute. G90 G91 are not used for absolute and incremental. Hope this helps.
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    My Sag 14 came with a 4 KW motor about 5.4 hp....

    My Sag 14 came with a 4 KW motor about 5.4 hp. I've replaced it with a 3 hp motor and this has worked out well. If that lathe actually has a 20 hp motor, you would need to use that power...
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    We had a Westinghouse control on a Whitney punch...

    We had a Westinghouse control on a Whitney punch press. Punched tape, no CRT G00 interpolation only.
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    Not doing what you've suggested I could notice a...

    Not doing what you've suggested I could notice a small pause between sub iterations. I will give this a try.

    Thanks!
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