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Type: Posts; User: joeavaerage

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  1. Replies
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    170

    Re: SUPPLY CHAIN PROBLEMS

    Hi,



    Me too, just as bloody well!



    Very true. Much is made of the fact that China is the second largest economy, but that is somewhat deceptive. On the basis of GDP per capita China is...
  2. Replies
    15
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    170

    Re: SUPPLY CHAIN PROBLEMS

    Hi,



    I have observed the same thing, and yet its not a tariff, but has been effective in Japanese companies exiting China, although not always to Japan. I think that is a more creative
    way to...
  3. Replies
    15
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    170

    Re: SUPPLY CHAIN PROBLEMS

    Hi,
    but then China is a huge market for western companies, GM comes to mind, the only profit they really make comes from manufacturing in China and selling
    to Chinese customers. If the US imposes...
  4. Replies
    15
    Views
    170

    Re: SUPPLY CHAIN PROBLEMS

    Hi,



    Never a truer word spoken. We consumers are to blame for the 'everything comes out of China phenomenon', we bought the cheap clothes so that all our domestic manufacturers went bust.......
  5. Replies
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    50

    Re: Need Help and Advise Nema Motor types

    Hi,



    I think that is over the top, 23 size steppers of 200 oz.in I suspect would be ample.

    Lets do a rough calculation:

    Assume 1Nm torque (approx 190 oz.in)
    16mm diameter ballscrew...
  6. Replies
    6
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    38

    Re: Controller Advice Needed

    Hi,
    all steppers lose torque the faster they go, that's just the physics of how they work.

    Inductance (of the windings) is a good measure of how bad the torque degradation will be, the lower the...
  7. Replies
    6
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    38

    Re: Controller Advice Needed

    HI,
    don't waste your time trying to run steppers at 24V. They will have their rated torque but the torque will fall off a cliff at any speed.

    with stepper:

    Current=Torque (and heat!)...
  8. Replies
    10
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    50

    Re: Need Help and Advise Nema Motor types

    Hi,
    a stepper is just a motor, so it will not 'lift' anything...as is. It needs to be connected to some sort of linear motion actuator.

    If you want precision and reliability the ballscews are the...
  9. Re: Make my own Arduino-like microcontroller board

    Hi,
    I've been struggling to get ATmega 328PB ICs for several months due to the global shortages so I've started using AVRDx series ICs, they're good, very good,
    albeit with quite a step up with...
  10. Replies
    2
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    52

    Re: My End Mills Keeps Breaking

    Hi,
    does the broken endmills show Built-up-Edge (BUE), that is to say aluminum stuck in the flutes?

    Aluminum is 'sticky' and prone to BUE, and this is especially so if the chips are not cleared...
  11. Replies
    19
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    110

    Re: Ebay 3 phase motor find

    Hi,
    yes I think you may be right, I seem to recall Brook and Compton????

    I do definitely remember that it was totally enclosed cast iron and weighed a ton despite only being 3hp, and being...
  12. Re: Retrofit Jianken Jgl-100/3.2R24 800Hz & Fuling DZB312B005.5L2DK to old Isel ADVIC

    Hi,
    I would guess that you have a sufficient supply.

    The current draw only ever gets above 25% when you start pushing it or you manage to bury a tool in some stock, and with any sort of luck...
  13. Replies
    19
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    110

    Re: Ebay 3 phase motor find

    Hi,
    I put a VFD on our small lathe at work....after a while the motor blew up.

    I got a cheap (Chinese or maybe Indian?) motor and it lasted a week. My boss was livid and wouldn't allow me to get...
  14. Re: Retrofit Jianken Jgl-100/3.2R24 800Hz & Fuling DZB312B005.5L2DK to old Isel ADVIC

    Hi,
    the drive I linked to is the highspeed model, ie 1500Hz. The standard model is 600Hz and is more common but the highspeed model is available and usual no more than $20 difference.

    2.2kW is...
  15. Re: Retrofit Jianken Jgl-100/3.2R24 800Hz & Fuling DZB312B005.5L2DK to old Isel ADVIC

    Hi,
    Deltas current model line-up is the MS300 series which comes in standard models to 600Hz and Highspeed models to 1500Hz.
    the 'H' at the tail end of the part number denotes thee highspeed...
  16. Re: Retrofit Jianken Jgl-100/3.2R24 800Hz & Fuling DZB312B005.5L2DK to old Isel ADVIC

    Hi,
    the Jianken spindles have a pretty good reputation......Fuling on the other hand do not.

    I swear by Delta products, a Taiwanese brand often manufactured in China but a decided step up in...
  17. Re: Make my own Arduino-like microcontroller board

    Hi,
    if you have no experience with uPs then starting with an Arduino so you can use the Arduino IDE is a great first step.

    Most of my uP designs require a bare metal chip, and so I use ATMega...
  18. Replies
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    438

    Re: www.machsupport.com - down ?

    Hi,
    do you suppose its possible that the Mach Forum address has fallen foul of your virus protection program?

    Craig
  19. Replies
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    110

    Re: Ebay 3 phase motor find

    Hi,
    three phase motors that are made for running off a VFD are called 'inverter ready' and attract a significant premium.

    Most ordinary three phase motors work fine but the VFD introduces high...
  20. Replies
    4
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    178

    Re: Machining Tabs?

    Hi,
    I don't know about SurfCAM but Fusion 360 has machining tabs as standard, and dammned usful they are too.

    Craig
  21. Replies
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    Re: Servo motor identification.

    Hi,
    even if you can identify the servos you have a problem trying to get compatible drives.

    Argon drives by Granite Devices for instance are servo drives made to accommodate a wide range of servo...
  22. Replies
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    Re: Slave Problem....HELP!

    Hi,
    there is a subtle difference in licencing between UCCNC and Mach.

    With Mach3 if you have a licence you can use it as often as you like on as many machines as you like.

    With Mach4Hobby, you...
  23. Replies
    8
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    Re: Slave Problem....HELP!

    Hi,



    Mach3 is NOT free, what this means is NVEM have supplied (yet another) pirate copy of Mach3 and that is why you'll get no help from the Mach Forum.

    Even were you to consider buying a...
  24. Replies
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    Re: 5x12 router build electronics?

    Hi,
    the single biggest and toughest hurdle in ANY machine is to make it rigid. If you require rigidity 'R' to machine wood without undue flexure and consequent loss of accuracy
    and vibration, then...
  25. Replies
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    Re: Manual Bed Milling Machine or CNC

    Hi,
    how it was described to me some years ago is that 'A good CNC machine and controller does not replace a skilled machinist but means that a the same skilled machinist
    can do so many more jobs...
  26. Re: Correct way to do lead in in fusion 360 CAM

    Hi,
    no its not new....and its really related to the machine rather than Fusion.

    Remember the setting is called 'Safe Retracts', and your choice is closely related to your machine. For instance...
  27. Re: Correct way to do lead in in fusion 360 CAM

    Hi,
    there are only two things that I bother with in the Post set-up. That is Safe Retracts is set to Clearance Height and Radius Arcs is set to On.
    That works perfectly with Mach4.

    Craig
  28. Re: Which CAM softwares should I consider?

    Hi,
    Fusion 360 is pretty fair, and about $600 per year, and so represents fair value.

    I used MasterCAM also, but not a legit copy either. I still prefer MasterCAM but cant afford it, so I ditched...
  29. Re: Correct way to do lead in in fusion 360 CAM

    Hi,


    I have not altered Fusion, to my knowledge it operates the way it does by default. The bottom of the toolpath is not defined, that is Fusion does not choose for you, you must
    explicitly...
  30. Re: Correct way to do lead in in fusion 360 CAM

    Hi,


    That rather sounds like the Heights are not set well. Do you use the Heights Tab of the toolpath dialogue?. Its very important that you know whether you have set the geometry to the
    top...
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