Hi To All,
I need a clarification or rational regarding the attached figures/drawings;
The first figure 24-6, shows that the 20 basic x 12 basic true profile opening can vary in location more than its orientation or size...I get that. It also states that the upper segment controls the location relative to Datums A & B and orientation relative to Datum B.
The second figure 24-7, control 1 upper segment states "controls the orientation relative to Datums A & B and location of the opening relative to Datums B & C."
Given that the DRFs are similarly constructed, why does the upper segment control location of the opening relative to Datums A & B in Figure 24-6; yet in Figure 24-7, the upper segment controls the location of the opening relative to Datums B & C? In fact for controls 2 & 3 in Figure 24-7 orientation of the opening is again controlled by Datums B & C. Why not Datum A & B?
What am I missing?
Thank you for your assistance..
Marty
I need a clarification or rational regarding the attached figures/drawings;
The first figure 24-6, shows that the 20 basic x 12 basic true profile opening can vary in location more than its orientation or size...I get that. It also states that the upper segment controls the location relative to Datums A & B and orientation relative to Datum B.
The second figure 24-7, control 1 upper segment states "controls the orientation relative to Datums A & B and location of the opening relative to Datums B & C."
Given that the DRFs are similarly constructed, why does the upper segment control location of the opening relative to Datums A & B in Figure 24-6; yet in Figure 24-7, the upper segment controls the location of the opening relative to Datums B & C? In fact for controls 2 & 3 in Figure 24-7 orientation of the opening is again controlled by Datums B & C. Why not Datum A & B?
What am I missing?
Thank you for your assistance..
Marty
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