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Programing with Romer Arm

WolfMan
I have a few questions about programming with Romer. I have never used it before and was wondering is programming any different from CMM or anything I need to know bedsides its accuracy and repeatability.

So my first q. is Do I need a DCC Alignm. ?

How do i go about locking an Axis, say I need to measure something At X0 Y0, how do I do it with Romer?

Any additional Information info. is appreciated.
  • I have a few questions about programming with Romer. I have never used it before and was wondering is programming any different from CMM or anything I need to know bedsides its accuracy and repeatability.

    So my first q. is Do I need a DCC Alignm. ?

    How do i go about locking an Axis, say I need to measure something At X0 Y0, how do I do it with Romer?

    Any additional Information info. is appreciated.

    Q1) Would you run any Cmm prog without a DCC alignment?

    Q2) You can have 'targets' enabled (can't remember the proper name)

    Q3) With a TP20 on the end of the arm the & with usual care the accuracy was good.

    Without the TP20 but a standard 6mm ball we got a passing nosey worker to follow instructions (beep here, beep on that etc) took 23 seconds to align to the CAD model ready to run.
  • There is no such thing as "DCC" with a Romer arm. The entire program is manual. By DCC, if you mean a refining alignment, then yes, you still want to do that.

    In "F10" (or F5, I forget) you can turn on probe auto-trigger and define a radius at which the auto-trigger can occur. Programming for a Romer Arm is basically the same as writing a program for a CMM and running it 100% manually, never switching to DCC. Almost all of the same functionality is available. Alignments work the same.
  • There is no such thing as "DCC" with a Romer arm. The entire program is manual. By DCC, if you mean a refining alignment, then yes, you still want to do that.

    In "F10" (or F5, I forget) you can turn on probe auto-trigger and define a radius at which the auto-trigger can occur. Programming for a Romer Arm is basically the same as writing a program for a CMM and running it 100% manually, never switching to DCC. Almost all of the same functionality is available. Alignments work the same.

    That is what i wanted to know, so I do ALIGN 1, then I do another Align without switching to DCC? What is the point of the second align if it is all done in Manually.

    Also what about Homing and Calibration, is that any different?
    What about threaded Holes, do I measure them like a circle?
  • The first alignment is to tell PC-DMIS where the part is in relation to the machine, in this case the arm.
    The second alignment is to refine the location of the part, typically using the datum structure.

    There is no homing of the Romer Arm.
    The Romer probes calibration is not done through PC-DMIS, but through the RDS software. You shouldn't need to change that. It is supposedly attach probe and go.

    The downside to the arm lies in the fact that all measurements are done manually. For measuring threaded holes, I would suggest using the biggest probe you can fit in the hole, or acquiring Jo-Plugs for the holes, or using single point circles.

    You should address most of these types of questions in the PC-DMIS Portable forum.
  • The first alignment is to tell PC-DMIS where the part is in relation to the machine, in this case the arm.
    The second alignment is to refine the location of the part, typically using the datum structure.

    There is no homing of the Romer Arm.
    The Romer probes calibration is not done through PC-DMIS, but through the RDS software. You shouldn't need to change that. It is supposedly attach probe and go.

    The downside to the arm lies in the fact that all measurements are done manually. For measuring threaded holes, I would suggest using the biggest probe you can fit in the hole, or acquiring Jo-Plugs for the holes, or using single point circles.

    You should address most of these types of questions in the PC-DMIS Portable forum.

    Great info thank you. I am not sure about the refining the Alignment, by refining you mean using more points right? There is nothing else to refine with manual probing.
  • Great info thank you. I am not sure about the refining the Alignment, by refining you mean using more points right? There is nothing else to refine with manual probing.

    What I mean by refining is more that when you do the initial alignment, it's common that you aren't trying to get the part exactly, perfectly aligned. You are trying to get it close enough for the DCC to take over. So, maybe you are using a quick 3-2-1 that isn't really representative of the part datum structure. The DCC alignment, is supposed to be a refinement of the manual/initial alignment. This is where you go and actually define your datums, measure them and align to them.

    With the Romer Arm, I might have a fixture, and I do a quick alignment to the tooling balls. The "DCC" or refinement is done actually using the Datum nets on the fixture.
  • I thought with romer everything is in DCC mode.

    Say i have top -A- and two edges B and C. Cant I just create one alignment why would i do the same thing twice if the datums are the same as the print
  • Anything else i need to know about romer, any othwr differances from CMM
  • If i were to measure a thread, you said that i can use one click method, do i select circle first or do i just click it and it will lnow dia size?
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