1. Good day all.

    Some time ago I asking about Digitizing.

    For one of my current project I need to know the bolt hole patten of a gearbox bell housing, so that I can design and make a suitable adaptor plate.

    Here is a picture of the gearbox bell housing in quesion.

    Sorry about the quick MS Paint drawing .

    Does anyone have any Probing / Digitizing scripts that will do this job, or does anyone know how to make Probing / Digitizing scripts?

    Or is there a better way of doing this?

    Thanks for your time.

    Best Regards.
    "If first you don't succeed, redefine success"

  2. #2
    If it's just the bolt holes you're after then I would just measure between them with a calliper and add the radius of each hole to get the centre distance. Should be plenty near enough for this.

    Could you use the existing one as a template, drill through it and put a bolt through each hole after drilling to stop it wandering.

  3. #3
    but if you DO want to have a go via probing there are numerous ways you can do it. A simple way (not the most optimized) is to jog your probe down into the hole roughly in the centre (but doesn't really matter). Probe west, note the X returned - NOT the current position displayed. (in Mach for example the X trip point will be in gcode var 2000 your controller/interpreter may differ). Now probe east, note the X position. G0 or G1 mid way between your recorded points. Now probe north and south and note the Y trip points (in Mach gcode var 2001) then move to the mid point of your recorded Y trips. Voila - your at the centre - or at least as accurately as your probe allows and your holes are circular. The probe command in Mach is G31.

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