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61. Figures 3.2 and 3.3 are detail drawings of the movable jaw and the hardened inserts respectively. Using the dimensional information in these figures and scaled measurements from the assembly drawing in Figure 3.1, draw detail drawings in third angle projection of the other parts. Include dimensions and tolerances. Also include geometric tolerances and surface finish specifications where you think appropriate. These are the body (part 1), the bush (part 4), the bush screw (part 5), the jaw clamp screw (part 6), the tommy bar (part 7), the plate (part 9) and the plate screw (part 10). Provide an item list detailing all the parts but which also gives information about the insert screws (part 8).

62. Using your drawing template from Question 39, reproduce the pulley system detail and assembly drawings in Figure 4.1 in third angle projection. The bolt bearing diameter is to be 20mm. The thread is to be Ml5. The bearing fit is to be a free-running fit. Using scaled measurements, draw detail drawings of the shaft, pulley and hole (local section), an assembly drawing and an item list of parts in third angle projection. Your drawings should include dimensions and tolerances (universal or specific as appropriate) sufficient for the system to be made by a subcontractor in another country. Using the information in Figure 5.6, select manufacturing processes for the bolt bearing and the pulley hole. The shaft and bolt material is mild steel. Add a GT for the two end faces of the pulley.

63. The photographs in Figure Q63 show an engineer's clamp that has been made in imperial units. The jaws are 9/16 inches square and the paper used for the background is 1cm graph paper. Using scaled measurements, convert the dimensions to the nearest logical metric units and draw an assembly drawing, detail parts drawings and an item list in third angle projection. Add dimensions and tolerances sufficient for it to be made. The materials of construction are steel.

Figure Q63
Engineering Drawing Belt Pulley

64. The photographs in Figure Q64 show a woodworking adjustable bevel which was made in imperial units. The photo shows a ruler for scaling purposes. The background is 1cm graph paper. Note that the parts photo shows four parts whereas there are really nine parts, i.e. those shown plus four rivets and the spacer plate. Using scaled measurements, convert the dimensions to the nearest logical metric units and draw an assembly drawing, detail parts drawings and an item list in third angle projection. Add dimensions and tolerances sufficient for it to be made. The materials of construction are steel. The blade is 0,067 inches thick gauge plate steel. The two sides are riveted together using four double-sided rivets. I suggest you use (j)3mm countersunk rivets with head angles of 90°. Standard rivets have maximum head diameters after forming of 1,85 shank diameter (i.e. 5,55mm). This means that, using the symbology in Section 4.3 and Figure 4.8, each side of the rivet holes is given by:

Detail Drawing Joining Welding
Figure Q64

65. Figure Q65 shows a 'site' sketch of a flange used for joining pipes that convey high-pressure liquid. It gives only basic information and the intention is that the designer will later produce full engineering drawings. The intention is that two pipes will be joined using two flange/pipe assemblies, a 1mm thick PTFE gasket (ID = 35mm) and the necessary bolts, washers and nuts. Draw a full assembly drawing, an item list, a detail drawing of the gasket, a detail drawing of the flange (prior to welding), a detailed drawing of a pipe end prior to welding and a flange + pipe welded assembly drawing in third angle projection. Dimension and tolerance the drawings sufficiently for the parts to be made.

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