Question

Please help me answer this question? Please note that no dimensions were given. Thank you so much

04-BS-15 Engineering Graphics & Design Process May 2012 QUESTION 1 For the part shown below, Sketch an appropriate set of orthographic views, using third-angle projection. (10 marks) values in the dimensions. (10 marks) could be used to create this geometry using parametric, feature-based solid modelling CAD a) b) Fully dimension the sketch in part a) using professional standards. Use "xx' in place of numerical c) Describe and sketch an appropriate sequence of feature-based solid modelling operations that d) Describe and discuss appropriate manufacturing methods for this part, and any issues that might software. (15 marks) arise. (15 marks)

Answer 1

#1)

a) and b)

5 1.00 2.00 RO.25 ROUND 3 sides 2.00 1.00 0.30 4OFF 2 0.50 0.25 DEEP 40FF 8 0.50 8 4.00 5.00 3 C:

c) Step 1: Extrude a cylinder with a hole at the desired height from the base of the part

Step 2: draw a base plate such that its end matches the end face of the cylinder

Step 3: extrude a rectangular column from the base plate to the cylinder. Use the "upto next surface" option for extrusion to parameterize the height of the column

Step 4: Use the hole wizard to create counter bore hole at the corners of the base plate

Step 5: Use the round tool to round the edges shown

Step 6: Extrude Cut an inset on the back face of the part as shwn

0.50

d) The first option would be to machine the part. The base plate and the column can be simply cut from a sheet. Te inset on the column can be done by metal removal using milling and the cylinder can be turned on a lathe The part can then be assembled by welding together all the components.

However, the amount of welding required would induce a lot of thermal stresses and can make the final part very skewed

If there is batch quantity required, the part can be manufactured using casting. However, it would be difficult to get the desired finish and sharp corners. Also including the cost of the die, the process can be expensive for small batches.