Fixture?

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  • Fixture?

    Good Day To All,

    I'm not sure who is on today, due to the holiday.

    Typical fixtures in the past, have had tooling balls.

    I know have a few fixtures without tooling balls, instead they have the following;
    i) 3 datum targets on the fixture base, no coordinates.
    ii) 3 "busing" type of holes, in a straight line, with coordinates.
    This is a right hand / left hand fixture, so I would use two of the three "bushing" holes at a time.

    How does one correctly align this type of a fixture.

    I thank you in advance for your time and assistance in this matter.

    Best Regards,
    ZydecoPete

    sigpic

  • #2
    Hi Pete the best way is to create an iterative alignment taking 1 point in each of the datum targets an then the 2 circles the datum targets are there to establish the plane an the 2 circles are to establish rotation an one of the circles will be your pickup.

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    • #3
      In general Jessejames is correct. The only thing that needs to be added is to get the fixture drawing and part drawing and determine how the targets are to be determined.

      For example, do two of the targets act independently of the third(Left vs Right).

      It would also be advisable after probing the fixture targets to probe the part locating features and make sure that they meet the fixture dimensions - or actually use them to establish your initial datums for the part.
      Links to my utilities for PCDMIS

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