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Figure 1 shows top view, front view and side view of 50 mm ×30 mm × 15 mm thick

ID: 2327420 • Letter: F

Question

Figure 1 shows top view, front view and side view of 50 mm ×30 mm × 15 mm thick plate with a pattern if three 8 mm H7 tapped holes as shown.

A) Using the length, width and thickness of the plate as the basic dimensions, show the dimensions appropriately on the drawing
B) Show the location of the holes if they the t holes are equally spaced; the holes close sides are to be located at 15 mm from the edges.
C) Using the bottom surface as datum A, show the flatness tolerance on datum A to be 1/10 mm.
D) Use C as the secondary datum and show a perpendicularity tolerance as one half of one mm.
E) Use B as the tertiary datum and indicate its perpendicularity tolerance of 0.3 mm with reference to primary and secondary datums
F) Show the positional tolerance and tolerance of the three holes by a suitable feature control frame.

O O O I II I II

Explanation / Answer

Answer of the following question is as follows.

The location of the hole is20cm left hand side .

The value of tolerance is 30 micron .

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