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Recent content by asong

  1. asong

    D+f on hob

    Thank you, lbmakem
  2. asong

    D+f on hob

    What's the meaning of "D+f" on hob? I know "WD" means whole depth. "D+f" seems the same.
  3. asong

    Gear shaper

    ok, tomorrow I will call them, see if any help.
  4. asong

    Gear shaper

    I am Chinese, and in China now. if need any help, just let know.
  5. asong

    Inline newton meter

    hi, man, how to attach pic on this?
  6. asong

    Involute Curve Autolisp Routine

    The curve diamondjim created is right. If you want it more accurate, just set the variant "pnts" bigger. There are several involute equations, his is right. Here below I attached a lisp file which creates involute curve only, it can also create "short" or "long" involute, that means: the curve...
  7. asong

    How to edit surface

    Thanks for all your comments. I will try. Thank you CarlB, M2s works.
  8. asong

    How to edit surface

    I am working on a surface which a 3D curve revolves along another straight line, and I want cut this surface with a plane to see the intersection. But solid can not do the job.
  9. asong

    How to edit surface

    Can 3D surfaces be edited like solid? subtract or union, or trim.
  10. asong

    Understanding of relation between different gears

    Hi, Gearman The gear we cut with shaper was an internal ring gear, after resharpening (like you said, it was to certain nagative value), the root diameter got smaller, the tip of planetry gear hit the root. The shaper cutter had a too big tip relief angle. here below is my post about this...
  11. asong

    Understanding of relation between different gears

    Hi, ERT Thanks for your concern, and your advice. I am an assembly processsing engineer, designing tools to assemble gear boxes. Our factory makes spur and helical gears. I think to understand gear by geometry is the base of all other respects. And all respects of gear are associated: too thin...
  12. asong

    Understanding of relation between different gears

    Gear transmission is the transmission of two partial spheres which have their own centers and axles. I believe the spur gear is the particular condition of bevel gear, when the apex is at the infinite distance and the shaft angle is 0. So equations for bevel gear can be used for spur gear. So I...
  13. asong

    pull to lock / pull to release mechanism

    I believe that will be the same as press lock and press release, just inverse the direction of it. You can see a kind of ball pen anyway, press the tip out, and press the tip back. disassemble it and see what's inside.
  14. asong

    data validation

    It works. Thanks a lot!
  15. asong

    data validation

    I hope that data validation refer cells from another sheet, but I can not make it. :-(

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