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Slot Width/Length Bonus?

I've attached a print and code of my program on v3.5MR2.

First question is why is PC-Dmis adding both bonus tolerances, width & length, together to calculate the true position bonus? I'm looking at a old CMM report of v3.7MR3 and it is only using bonus tolerance of the width to calculate the true position bonus...Is this a known problem in v3.5MR2?

Second, I don't fully understand boundary and if it's possible to dimension correctly in v3.5MR2...

Thanks for your help.

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  • I've attached a print and code of my program on v3.5MR2.

    First question is why is PC-Dmis adding both bonus tolerances, width & length, together to calculate the true position bonus? I'm looking at a old CMM report of v3.7MR3 and it is only using bonus tolerance of the width to calculate the true position bonus...Is this a known problem in v3.5MR2?

    Second, I don't fully understand boundary and if it's possible to dimension correctly in v3.5MR2...

    Thanks for your help.

    Well, TP and it's associated bonus has been a bug-a-boo in Pcdmis for EVER. Way back in V3.5, if I recall, I had to report the TP with ONLY the diameter and report the length as it's own dimension. Is it possible to make the length RFS and the width MMC in the same dimension?

    Also, technically (and I am sure there will be a lot of input on this) a slot is not a singular feature of size, there are TWO sizes involved, length of slot can only give bonus in the direction of the length of slot, width can only give bonus in the direction of width and so on. If the slot is square to alignment (length is along X axis for example), then dimension it as 2 TP's, one for the width and axis, one for the length and axis. Don't know how the width bonus can be applied to the length direction and vise-verse.

    Boundary, that really requires a scan to be done of the profile and then dimensioned as a profile with the correct tolerance (form & location) applied to it.
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  • I've attached a print and code of my program on v3.5MR2.

    First question is why is PC-Dmis adding both bonus tolerances, width & length, together to calculate the true position bonus? I'm looking at a old CMM report of v3.7MR3 and it is only using bonus tolerance of the width to calculate the true position bonus...Is this a known problem in v3.5MR2?

    Second, I don't fully understand boundary and if it's possible to dimension correctly in v3.5MR2...

    Thanks for your help.

    Well, TP and it's associated bonus has been a bug-a-boo in Pcdmis for EVER. Way back in V3.5, if I recall, I had to report the TP with ONLY the diameter and report the length as it's own dimension. Is it possible to make the length RFS and the width MMC in the same dimension?

    Also, technically (and I am sure there will be a lot of input on this) a slot is not a singular feature of size, there are TWO sizes involved, length of slot can only give bonus in the direction of the length of slot, width can only give bonus in the direction of width and so on. If the slot is square to alignment (length is along X axis for example), then dimension it as 2 TP's, one for the width and axis, one for the length and axis. Don't know how the width bonus can be applied to the length direction and vise-verse.

    Boundary, that really requires a scan to be done of the profile and then dimensioned as a profile with the correct tolerance (form & location) applied to it.
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