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  1. grinderguy

    Where to buy oval point set screws?

    We make similar items for machine tool builders and fastener supply houses. www.advanced-grinding.com Robert Setree www.advanced-grinding.com
  2. grinderguy

    tool nose offset

    This link is to a drawing showing the tool geometry http://www.cnczone.com/forums/attachment.php?attachmentid=392 Bob Robert Setree www.advanced-grinding.com
  3. grinderguy

    tool nose offset

    BobM3 is making a little sense to me. This is a link to an example. http://www.cnczone.com/forums/showthread.php?t=961&page=2&pp=15 . Notice the g2 line has 2 "z" s which means it will not work. I may understand this by decerning the difference between the drawing certerline of the raduis and...
  4. grinderguy

    tool nose offset

    I am using xz on a 2 axis lathe. I am trying I am using a tool with a .031 nose radius to generate a .125 radius. The machine moves .125-.031=.094r to make the part .125 radius. The start and stop points of the radius are what I need to generate. Robert Setree www.advanced-grinding.com
  5. grinderguy

    tool nose offset

    When traveling in z direction the left quadrant of the radius is the leading edge and the lower quadrant is trailing by the raduis amount. As you go thru a larger radius the machine actually moves in the part raduis- the tool raduis. The start and stop points are changed by the tool tip...
  6. grinderguy

    tool nose offset

    I need to draw in autocad the same radius offset that is created by g41 and 42 in cnc gcode. As you do a g2 and g3 raduis the actual tool position is not actually offset by the amount of radius. How do you draw the g2,g3 with raduis comp in AutoCad? Robert Setree www.advanced-grinding.com
  7. grinderguy

    mazak offerings?

    When I was just starting my shop it was in a poorly heated space. We used to add kerosine into the dark cutting oil because the oil when cold was too thick to pump. Well that worked ok for a few months. Then one day when my brother turned off the motor the field colapsing set the machine on...
  8. grinderguy

    Wanted: Qualified Tester for VMC

    I don't think a mechanic or engineer or testing is the answer. This is where I would call a lawyer. Robert Setree www.advanced-grinding.com
  9. grinderguy

    Wanted: Qualified Tester for VMC

    My machines show a large load during acceleration and decel. When running free the numbers you are getting are too high. The gauge is wrong or the spinle bearings have problems. If my machine had noticeable vibrations and it was new I would be enforcing the warrenty. I would like to know who...
  10. grinderguy

    Who can grind cones in the U.K?

    We are not in the U.K. but we do this. Inside or outside? This can be done with a univeral centertype grinder. This machine is in nearly every grinding room> Robert Setree www.advanced-grinding.com
  11. grinderguy

    Tooling vs. grinding forces - How to predict?

    I need more detailed information. Robert Setree www.advanced-grinding.com
  12. grinderguy

    Seeking best finishing process for 303SS shaft...

    Any process that puts chrome plating on stainless steel is tough to do. The plater may tell you he can "level" the finsh. Many times the plating just makes the flaws look worse. Electopolish has looked very good to me. Many of the medical parts I grind are later electropolished. Maintaining...
  13. grinderguy

    Recommend a worm thread grinding machine

    Excello, XLO, and Maag are the machinery names that come to mind. I have some of these machines for sale. You should also be thinking about the equipment you will use to measure the worms, that is the gauging equipment. Robert Setree www.advanced-grinding.com
  14. grinderguy

    Cutting Splines

    Splines on automotive shafts are generally rolled. Very expensive dies and equipment. The next procedure is "hobbing" with something like a Barber Coleman hobber. Determining what you want to make can be very difficult because the pressure angle on an automotive part may not be a common angle...
  15. grinderguy

    surface roughness profilometer

    I have several profilometers I would like to fix. I have mitutoyo surftest III and Bendix. Does anyone know where to get electrical schematics or maintenance manuals? Where do you buy a replacement stylus? Robert Setree www.advanced-grinding.com
  16. grinderguy

    Is there a need for undercut in cylindrical grinding a shoulder?

    I quote grinding jobs with shoulders. The lowest cost, cheapest, is with an under cut in the face and journal where we just touch the face. It takes a little longer to avoid the face than to touch it. Many customers will allow you to plunge into the radius when the drawing does not show it...
  17. grinderguy

    Monitoring of dresser an grinding wheel ?

    We are in the grinding business and "sound" means more to us than anything else. I have not needed anything new for several years, but when I do I will be looking at vibration and or acoustic type methods. Bob 502-452-9851 Robert Setree www.advanced-grinding.com
  18. grinderguy

    Visual Difference in Surface Finish

    The finish generally gets finer as the belt wears. I use stock removeal and temp. to determine when to change the belt. The surface comparator standards in books like MSC's can give you a visual. This is very hard to specify or communicate. If I were making the part and I do make parts...
  19. grinderguy

    Centerless sphere grinding?

    I would ask Landis in Hebron Ky. or Royal Master. I tried to use this process a few months ago and found very little help. My parts were better done on a chucking grinder because they had a stud. The ball bearings are done on double disk grinders, Landis Gardner , Waynesboro Pa.. Bob Setree...
  20. grinderguy

    Dowels for locating machine parts

    We ream tapered holes with hand reamers. They are normally "in stock' items with perishable tool companies. It takes very little skill to ream the holes. Aligning the components in dificult. Robert Setree www.advanced-grinding.com

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