Engineering Graphics
Consider the following part drawing. The perpendicularity tolerance of the protrusion on the plate, if diameter B is at LMC, is diameter __________ units.
0.3
Consider the detail drawings of the two parts of an assembly shown above. An analysis of the functionality of the parts has been performed, and it has been determined that the most important requirement is that Part 1 mates well with Part 2. Based on this information, what would be the best geometric controls to be applied in the boxes with a red question mark?
Each box with red question mark should have a perpendicularity control.
Consider the following part drawing. The perpendicularity tolerance shown is diameter 0.1 units if datum A is at MMC
False
General "+/-" tolerances apply to basic dimensions.
False
Position controls do not require datums.
False
The specification for position for the three holes on a "Support Plate" are as shown below. From the above, datum features for hole location are A, B and D.
False
The specification for position for the three holes on a "Support Plate" are as shown below. From the above, hole # 1 always has a position tolerance of 0.006 units (diameterwise).
False
The specification for position for the three holes on a "Support Plate" are as shown below. From the above, if all hole diameters are 0.377 units, the part would be acceptable.
False
The specifications for position for the center point of three holes on a "Support Plate" are as follows: For hole 1: From datum C: x_basic = 1.000, and from datum B y_basic = 1.000. For hole 2: From datum C: x_basic = 7.000, and from datum B y_basic = 2.000. For hole 3: From datum C: x_basic = 1.000, and from datum B y_basic = 3.000. The "Support Plate" was made and measured. The location of the center point of the three holes were as follows: For hole 1: From datum C: x = [x] , and from datum B y = [y]. For hole 2: From datum C: x = 7.009, and from datum B y = 1.994. For hole 3: From datum C: x = 0.999, and from datum B y = 3.020. What is the "diameter position error, Z" for hole 1?
Formula = 2* square root ((x-1)^2 + (y-1)^2) Answer = 2.82
The radial deviation from true position of the axis of a pin is 0.020 in. If the position tolerance calls for a diametral tolerance of 0.025 in @ RFS, is the actual pin located within position tolerance? Select the appropriate answer below.
No
Consider the drawing below. The part is made and the the hole marked as "H" is 9.0 mm diameter, and datum C is 9.1 mm diameter. What is the location tolerance of hole "H"?
There are two bonus tolerances because neither hole H nor hole C is at maximum material condition. One is 9-8.9 and the other is 9.1-8.9 (note maximum material condition is 8.9 diameter for both hole H and C). Thus the total location tolerance for hole H is 0.14+0.1+0.2 = 0.44 mm
Basic dimensions are placed in boxes.
True
Consider the following part drawing. The perpendicularity tolerance shown is diameter 0.1 units if diameter B is at MMC.
True
Primary views must show hidden lines.
True
The specification for position for the three holes on a "Support Plate" are as shown below. Based on drawing proportions, the choice of primary and secondary datum features follows the rule that the primary datum feature should be the largest surface area, and secondary datum features should have smaller surface areas than the primary.
True
The specification for position for the three holes on a "Support Plate" are as shown below. From the above, all holes have a size (diameter) tolerance of +/-0.006 units.
True
The specification for position for the three holes on a "Support Plate" are as shown below. From the above, basic dimensions are properly enclosed in boxes.
True
The specification for position for the three holes on a "Support Plate" are as shown below. From the above, hole # 3 is both within diameter tolerance and position tolerance.
True
The specification for position for the three holes on a "Support Plate" are as shown below. From the above, the part is missing specification for overall size.
True
