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Type: Posts; User: dazp1976

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  1. Isn't the H6 DB25 connector on the centroid acorn...

    Isn't the H6 DB25 connector on the centroid acorn the 5v output option for 5v stepper drive connection?
    Then you have the 24v header option for compatible drives like some servos etc.

    This makes...
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    Likely down to having close to the same...

    Likely down to having close to the same inductance.
    I've noticed that closed loop steppers are around fhe 2mh mark often.
    With open you have to sift through a lot of crap ones to find one that's...
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    Re: Advice wanted on controller upgrade

    The cheap boards like the one from makerstore work pretty well. I used one for years with par-port connection.
    If running 50v I would get DM860T drivers from stepper online.
    If you get any spikes,...
  4. If using a 3mm cutter the code would give you a...

    If using a 3mm cutter the code would give you a 3.6mm hole if runout is 0.
    3.7mm if runout is 0.05mm.
    The only way to get a 3mm hole from a 3mm cutter is a direct plunge.
    Surprised fusion didn't...
  5. Yep. With 0.3mm helix he'd need to use a 2.4mm...

    Yep. With 0.3mm helix he'd need to use a 2.4mm cutter or less to make a 3mm hole.
    Still doesn't explain the outer edges of the part being smaller.


    As said. Post your code.
  6. Sorry. In my previous post I meant 0.2mm. I...

    Sorry.
    In my previous post I meant 0.2mm. I read it wrong.
    I must say that a difference of 0.2mm per radius is a fair bit.
    It's a bit odd.
    Check through your cam settings and see if it's...
  7. Re: Inside dimensions bigger, outside dimensions smaller Mach3

    OK so think of it like this.
    If your machine isn't travelling slightly far enough or cutter is slightly bigger then:
    On holes if it doesn't go far enough letf it will cut more off the right. If it...
  8. Forget the PWM (pulse width modulation) this...

    Forget the PWM (pulse width modulation) this requires an extra pwm to analogue converter module to change the signal to voltage.
    0-10v pin goes into AVI (Analoge Voltage Input).
    GND pin simply...
  9. Re: Where to start with flood cooling on a DIY CNC

    Exit filter to catch chips and return pipe going back into tank.
    Is a good place to start planning.
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    Try this:...

    Try this:
    https://drufelcnc.com/doc/DrufelCNC_STB5100_manual.pdf

    Looks exactly the same and shows your 10v pin is the PWM type speed control and the AVI/GND are the analog (0-10) type control.
  11. Which means that one circuit is NO (normally...

    Which means that one circuit is NO (normally open) and one circuit is NC (normally closed/ shorted). Just for technical jargon sake.
  12. Re: Looking for ideas for a spindle motor positioner

    Why not just get a shorter probe.
    One day you might not "catch" the motor unit or even damage yourself with a jerky movement while catching.
    Also any concerns of potential tramming loss would...
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    Re: What is best cnc machine for noob.

    Manual Mill conversion is about it.
    PM25 size Mill as a minimum.
    RF45 size as suggested ideally for most versatility.

    DO NOT touch the sieg x2 size stuff.
  14. Re: E STOP POWER INVERTED ON MOTION CONTROL BOARD VMX24

    Broken wire maybe?.
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    Re: WHERE TO BUY LATHE SPINDLE IN EUROPE

    Why?.
    I've basically gave up on Europe for cnc/machining related stuff. (except for the odd electronics board).
    Supply of parts is terrible. Which in turn also means if they do have owt, it's...
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    A small PWM analog converter board. Looks...

    A small PWM analog converter board.

    Looks something like this:

    https://opencircuit.shop/product/PWM-to-Analog-0-10V-Converter-Module

    Some vfd's may have a jumper setting inside that you can...
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    Re: Teknic Servo drive Power supply

    (copy this into google search) SST-E545-RCX-4-2-D pdf

    Should give you the data sheet for the servo drive series as top result.
    It actually shows they have 2 inputs on the drive for 24-90DC...
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    Re: help please :)

    Which bob?
    The blue relay one?.
    Could be the jumper for P17 is set for relay and not axis.
    You can either run the relay or have a 5th axis. Can't use both at same time.
  19. Re: How do I add a 10 seconds delay after starting the spindle

    Try playing with the spindle 'delay spin up/down' options on the spindle setup page.
    Mine is set for 10 seconds on CW and CCW spin up, 8 secs for spin down.

    So mine:
    Machine is at home pos>...
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    Re: DMM Servo Tuning

    Shows this in the manual


    - Check that the encoder feedback cable
    is securely plugged from the servo motor
    to the JP3 port of the servo drive.
    - Check for any mechanical irregularities
    that...
  21. Re: .007" egg-shaped holes while circle-milling

    0.007" that's like 0.17 ish in mm. That's a lot for it to be a backlash problem alone.
    Sounds like something is loose or needs a lot of adjustment.
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    Re: DC Servo for Mach3 spindle

    You're not talking about lowering a router spindle to 3000rpm are you?.
    They're not really meant to go below 8k because of burn out.
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    Re: DC Servo for Mach3 spindle

    You are correct. My Lichuan seems a basic setup but feels well made.
    These things certainly have some balls in them!.

    Like Craig says, If you can find a good servo and drive somewhere for...
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    Re: DC Servo for Mach3 spindle

    Downside is the loss of rpm's.
    Pay attention to the notes on page 17 in the U series section:
    Such as:

    B. The motor can be operated at any point on the graph below
    4000 RPM. Higher speeds can...
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    Re: DC Servo for Mach3 spindle

    I'm looking at having a go at my own cat/bt spindle holder myself at some point.
    I want to have a go at an atc build but don't want to base it on TTS system for the R8 head I have at present.
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    Re: Mach3 Documented Bug List

    It's not so much about bugs.
    It's algorithms and codings.
    The software is too old and compact to be able to handle the extra features and information.
    Mach4 was written entirely from scratch so is...
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    Re: DC Servo for Mach3 spindle

    6nm or (600n-cm) constant. Peak of 18nm or (1800n-cm).
    Or 850 / 2550 oz-in.
    Voltage rated 220.
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    Re: DC Servo for Mach3 spindle

    Says it in the bloody spec page on P16
    https://www.kollmorgen.com/en-us/pro...sc-catalog-en/

    The fact it's only 53mm long says enough.
    rated:
    Cont 3000rpm (max6k)
    watts= 284
    vdc= 43.4
    Stall...
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    Re: DC Servo for Mach3 spindle

    You mention the motor but what driver are you going to be using?.
    Looking at the power output of motor (rated watts-284) I'm not convinced it's good for a spindle. More of an axis unit.
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    Re: Choosing the right stepper motor ?

    I just do that to avoid any damage from voltage spikes (just in case). Some supplies show a +/- 10% margin.
    Like with toroidal, their idle voltage is higher than when their loaded so I allow for...
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