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  1. JNieman

    Machining before plating

    Same as looslib. Hard-coat anodizing has larger buildup and that's almost always accounted for, unless it's comparatively large tolerances, but if the plating is less than 10% of the tolerance I might not worry about it. Depends on your expectations from your machines and machinists, on...
  2. JNieman

    Machining

    You guys must have 90deg drill heads much smaller than any I've seen, given the dimensions of the part. I think it would be wiser to redesign unless mass production justifies specialized tooling that won't directly inflate the component price dramatically.
  3. JNieman

    Calculate maximum mass of an workpiece on a vertical CNC turning machine

    Worse comes to worse, a safe test is to chuck it up. Assure the part is secured adequately. Command the spindle to 5 RPM and watch the spindle load monitor as you do. That will tell you a lot. Then you can try it at 50 RPM. Or whatever sounds good for testing. Asymmetric mass will be a big...
  4. JNieman

    Calculate maximum mass of an workpiece on a vertical CNC turning machine

    Any forces used in workholding shouldn't have any effect on the capacity of the machine. The only time you worry about workholding clamping forces is to ensure they are adequately compensating for any cutting forces in any vector. Whether you have a pie jaw chuck clamped or loose, the mass is...
  5. JNieman

    chamfer VS radius in the modern era

    Good point - I was assuming milling. For radii on lathes, it'd be the same tools, most likely, and not any different than wiggling the wheels a bit differently on the manuals. I had my mind tunnel-visioned into milling as that's where the differences are significant. OP, might want to...
  6. JNieman

    chamfer VS radius in the modern era

    Universally speaking, whether manual or CNC controlled, chamfers are much more efficient to machine. Speaking only of EXTERNAL features: The benefits of a chamfer is that one tool can machine MANY different sizes of chamfers at the same angle. This is truth for CNC or manual machines. The...
  7. JNieman

    Press fitting neodymium magnets`

    Seems like you're really hellbent on pressing neodymium itself directly into anodized aluminum. Have you thought about making the hole oversized and sleeving it with some kind of nylon or thermoplastic? The only other way I can see it working too well, without chipping the magnets, is to...
  8. JNieman

    Press fitting neodymium magnets`

    I was just about to type a suggestion about pressing metal-clad neodymium magnets instead. Since you're truly married to the pressing-in of them, it seems.
  9. JNieman

    Press fitting neodymium magnets`

    Magnets with either a threaded hole or threaded stud integrated are very common. Then of course there is the option to use adhesives.
  10. JNieman

    Monitoring the wear of tools

    Renishaw toolsetter probes are the bees knees but only measure geometric size changes. This is a great function but does not cover all wear situations. As @MikeHalloran notes, there are spindle sensors that can detect common symptoms. Typically spindle load is used to detect tool condition...
  11. JNieman

    Inadequately Dimensioned Drawings from Customers.

    It is also easily doable in UG/NX.
  12. JNieman

    Inadequately Dimensioned Drawings from Customers.

    The last resort is measuring a print to scale dimensions from. I can sometimes import a PDF, if supplied, into CAD software and 'trace' over it to get pretty close. Usually I'll have enough dimensioned data to align and scale the print to meet the lines I've drawn from dimensioned data. That...
  13. JNieman

    Solution to move a load between hangars

    Overhead bridge cranes in metal buildings are popular for a pretty good reason.
  14. JNieman

    Machine to Disentangle Wires Properly

    An ounce of prevention is worth a pound of pain 'fixes'.
  15. JNieman

    single point thread rolling

    Sorry, I can't be of any help. I am equally confused as you are. This might be something that has to be clarified by your customer. If you do find an answer to clarify this phrase, please share - I am very curious.
  16. JNieman

    single point thread rolling

    I don't understand any difference in effect there. Unless it means it's a single-start thread that is continuously rolled, which would be logical, but oddly (to me) stated.
  17. JNieman

    single point thread rolling

    I can't imagine how single point thread ROLLING could work, unless it was coupled with pretty rigid workpiece support opposite the 'rolling tool' which would sort of defeat the purpose of single pointing a thread. If you have to have a support on the other side, why not just have multiple...
  18. JNieman

    Antique Industrial Galore

    Yes, mostly museum pieces. Like ornerynorsk, I'd love the Ward. If it's in decent shape, I would think there'd be a good market for it - especially someone skilled (or willing to pay someone who is) in scraping and reconditioning the machine. Big heavy machines like that still do a lot of...
  19. JNieman

    choice among Heeks and PyCAM

    I'm not overly fond of using open source or 'free' CAM software. I much prefer something professional grade that has support. When the post processor is going screwy, and there's a looming deadline, it's good to have someone you can count on to assist with technical problems. Trying to avail...
  20. JNieman

    How to plan a machining site in that makes parts for a production site ?

    The problems you detail about parts tracking and inventory management are largely solved by the most basic organization and tracking. In the USA, at least, it's extremely common for even small business manufacturing to be ISO:9001 certified which includes requirements for tractability. One of...

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