MAE 455 COMPUTER-AIDED DESIGN AND DRAFTING LAB EXAM PRACTICE QUESTIONS 1. Create the part shown, with the given dimensions (in mm): • the hole on the side has a bottom 10 mm from the shaft centerline • the keyway width is 10 mm • add a pattern of 10 holes at a 30 mm radius on the flange. The holes should be 10 mm in diameter. • save the part file as shaft_mixid.prt. 402. Download the part lab_exam_practice_q2.prt. Modify the notch from a V shape to a U shape as shown. Modify the sketch only. 3. Download the part lab_exam_q3.prt. Modify the revolved section to incorporate a 6 mm radius groove as shown. The groove must be constrained to remain 40% of the way from the center to the edge of the flange. You must modify the existing sketch. You are not allowed to add new features. Fully constrain the sketch. Save the part as “lab_exam_q3_mixid.prt.” 204. Use NX expressions to control a parameter Y as a function of X as shown in the graph. Set X to be 6 when you submit the part. 5. Download the part lab_exam_practice_q5.prt. Correct the problematic feature. The part should look as shown in Figure 5. Save the part as "lab_exam_practice_q5_mixid.prt". Figure 5. Cover 6. Download the part lab_exam_practice_q6.prt. Move the connecting lines to make the surface shape more triangular on the sides, as shown in Figure 6. Save the part as "lab_exam_practice_q6_mixid.prt". Figure 6. Loft X Y 0 2 3 4 0 2 5 7 10 10 1 1 3 4 67. Download the part lab_exam_practice_q7.prt. Edit the loft to change the shape from that shown in Figure 7(a) to that shown in Figure 7(b). Be sure to edit the loft feature. Do not create a new feature (it is possible to tell if the feature is a new one.) Save the part as “lab_exam_practice_q7_mixid.prt”. (a) (b) Figure 7. Twisted Loft (a) before, (b) after. 8. Download the parts BLOCK_1x2_BLUE and BLOCK_1x6_RED. Create the assembly part Floor_mixid.prt. Use bottom up design techniques to add the pieces and mate them as shown in Figure 8(a). Figure 8. (a) Single Floor Sub- assemblyName it: Floor_userid(b) Tower AssemblyName it:Tower_userid10 109. Create an assembly Tower_mixid.prt using three Floor sub-assemblies and one 1x2 piece. Constrain the sub-assemblies and 1x2 piece as shown in Figure 8(b). 10. Create an exploded view arrangement of the Floor sub-assembly. 11. Download the part BLOCK_1x6_RED. Create the assembly part Link_mixid.prt. Use bottom up design techniques to add the pieces and mate them as shown in Figure 11(a). Figure 11. Sub-assembly and Assembly for Links 12. Create an assembly TwoLinks_mixid.prt using two Link sub-assemblies. Constrain the sub-assemblies as shown in Figure 11(b). 13. Create an arrangement of the Links sub-assembly called “exploded view”. 10 5 5 (a) Single Link Sub- assemblyName it: Link_userid(b) Two Link AssemblyName it: TwoLinks_userid5 514. Download the part lab_exam_practice_q14.prt and save it as “lab_exam_practice_q14_mixid.prt”. • Create the sketch shown in Figure 14(a) on the horizontal datum plane. • Extrude upwards and intersect the top wing surface in order to get the shape for the hatch as shown in Figure 14(b). • Use “Shell” to create the 0.1 in. thick hatch solid. • Hide the wing solid if necessary. (a) (b) Figure 14. (a) Sketch for cutting hatch, (b) the hatch. 15. Download the part wing_master_shape.prt. This is the control part to give the shape for a wing design. • Create a new wing assembly part “wing_assy_mixid.prt.” • Add the wing_master_shape part to the wing assembly. • Create a new (empty) part called “wing_hatch_mixid.prt,” and add this part to the wing assembly. • Use associative copy (Wave Geometry Linker) to add the top surface of the wing from the wing shape master part to the wing hatch part. 10