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Type: Posts; User: machinedude

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  1. Re: new desk top build first tests of movement.

    no you are correct but that is fixed, i had trouble getting the tandem axis set up right at first.
  2. Re: new desk top build first tests of movement.

    starting my first real project with this machine to give it a real test actually making something. i would probably go about doing these different if i had more to work with but it was a good test on...
  3. Re: new desk top build first tests of movement.

    i have not really had a ton of time to play around with cutting on this machine. i jogged across some aluminum and quickly realized the need to close this machine in. even with it closed in it still...
  4. new desk top build first tests of movement.

    i started this a few months back but it started with me buying a cheap $350 machine because i was curious what you could get for so little, and the short answer is not a whole lot :) but it inspired...
  5. Re: converting an old beat up grinder into a horizontal mill

    my spin on the air cylinder as a counter balance. works the same way the Haas system works just not as heavy duty. the Haas machines are dealing with a lot of weight so they did an air over oil...
  6. Re: converting an old beat up grinder into a horizontal mill

    by the time i added the pinion gear and adjusted the gear spacing with the clearance of the ball screw mounting points the back driving went away but i bought a large air cylinder to balance the...
  7. Re: converting an old beat up grinder into a horizontal mill

    i found a sizing tool from ABB that was helpful. what i landed on was aa 2:1 ratio on the Y Axis seems the servo's should work fine with the screw i have and the weight of the head which is roughly...
  8. Re: converting an old beat up grinder into a horizontal mill

    problem solving on my own this is the only thing i could find on speed limitations of spur gears. if this is what i am after then in my case with a 1.25 pitch diameter of the smaller gear it seems to...
  9. Re: converting an old beat up grinder into a horizontal mill

    It's still going to be a few weeks before i get into the drive and lead screw to raise and lower the head but i started to take a look in more detail. The original machine used spur gears at a 4:1...
  10. Re: converting an old beat up grinder into a horizontal mill

    got the encoder mount sorted out and figured i would post some pictures.

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  11. Re: converting an old beat up grinder into a horizontal mill

    started working on the cooling for the motor and took some quick pictures while i was testing fits of everything. So I figured i would share some progress pictures. still work to do but it's moving...
  12. Re: converting an old beat up grinder into a horizontal mill

    i think i have what i need as far as an encoder for this kind of set up. i am no expert on the electrical side of this stuff but always seem to fumble my way through it sooner or later :) i won't...
  13. Re: converting an old beat up grinder into a horizontal mill

    material costs these days are no joke. 1 foot of 3" 1/4 thick wall DOM tube was over $40 and the 2 3/4" 1/4 thick wall was over $37 for a foot. just shy of $100 with shipping for 2 feet of tube....
  14. Re: converting an old beat up grinder into a horizontal mill

    looks like it is in good shape is all. much better than the one i have. i got mine for $250 and it worked as is so i did not waste to much time on it since i was making money with it right away. i...
  15. Re: converting an old beat up grinder into a horizontal mill

    1:1 ratio and the motor shaft has the room to make mounting easy enough was my thoughts. as for two fans i have a bunch of them sitting around so i figured 2 can't hurt. i honestly don't know how...
  16. Re: converting an old beat up grinder into a horizontal mill

    i have been waiting for 3 weeks for some DOM tube so i can make outer race spacers and this material still has not shipped yet? prices are a bit out of control on tube and everything else for that...
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    Re: School me on air collets

    this machine looks like a scratch build honestly. i have never owned a Tormach so i just have a basic understanding of what they have done, with the TTS they use a master collet that never comes out...
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    Re: School me on air collets

    an R8 collet is just 1 form of collet. what you are talking about is a power drawbar which come in a few different flavors. the only two options for a R8 i can think of is what Tormach uses with a...
  19. Re: converting an old beat up grinder into a horizontal mill

    i started working on the casting bores for the new spindle. this casting seemed to be hard when it came to machining so i'm not sure if it was hardened or not? roughing in the bores was not to much...
  20. Re: converting an old beat up grinder into a horizontal mill

    i would think you are right in the need for some kind of reduction to increase the torque taking a guess. so i would take the comment with a grain of salt from DMM without knowing all the details of...
  21. Re: converting an old beat up grinder into a horizontal mill

    after getting into the shop at home i checked some weights and the over all weight is less than i thought it was. i think 200lbs to 225lbs is closer to a finished weight, the columns were lighter...
  22. Re: converting an old beat up grinder into a horizontal mill

    i may not need any kind of counterweight so as of now my plan is to just try without one and see how it does? i plan on using 750W servo's all around with a 5mm pitch screw so they can handle the...
  23. Re: converting an old beat up grinder into a horizontal mill

    it was the only thing i could find that was big enough to make it from and i did not want to have to buy something. i did not really have a budget for this project so any way to save is a plus. takes...
  24. Re: converting an old beat up grinder into a horizontal mill

    i wish i could move faster and get things done but spindles are are precise and that takes time. i wanted to have the head bored out and start thinking about putting things together but the rework...
  25. Re: converting an old beat up grinder into a horizontal mill

    i managed to get a decent amount done over the weekend but not as much as i would have liked too. i added some drive dogs to the spindle finished up the labyrinth seal and mounting to the casting for...
  26. Re: converting an old beat up grinder into a horizontal mill

    i guess i should have included a picture of the cast iron head the original spindle was in but did not think to include it. since the head was set up for a grinding wheel rather than a cutter spindle...
  27. Re: converting an old beat up grinder into a horizontal mill

    thought i had the inside nailed down but once i took my shaft out and test fit the draw bar i soon realized i had to go back in and rework the section that allows the pull stud clamp to open up. i'm...
  28. Re: converting an old beat up grinder into a horizontal mill

    this just a progress pictures over the last 3 1/2 months of me working here and there on the weekends. the mechanics of the lower end is pretty much sorted out, the Y axis for a horizontal...
  29. converting an old beat up grinder into a horizontal mill

    this project has been going on for a few months now when time permits. this all started when my employer decided to get a different small surface grinder since this one has seen better days. by the...
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    Re: Designing a new router called Brevis-HD

    i hope we all last at least that long :)
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