After talking about the idea for a while, to clarify, you will naturally draw a stricture or a diagram to show what the product would look like. You have heard the saying “a picture is worth a thousand words,” well, in engineering, a good drawing is worth even more! Technical drawings, or engineering drawings, are important in conveying useful information to other engineers or machinists in a standard, acceptable manner to allow the readers of these drawings to visualize what the proposed product would look like.
More significantly, information such as the dimensions of the proposed product, or what it would look like when viewed from the pop or from the side or the front is provided. The drawings will also specify what type of material is to be used to make this product. If you are in Aerospace, Mechanical, Biomedical, or the Efficient Energy Generation and Conversion stream of the Sustainable and Renewable Energy Engineering program, as part of Year 2 a whole course (MAMA 2001) will be dedicated to studying in detail elementary descriptive geometry and various engineering drawing techniques.
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II ? Problem Statement: Imagine that you have been given the Job to design a “bearing flange mount”. Your and-drawn conceptual design sketch might look something like the drawing shown in Figure 1. Free-hand sketches like these are often used in the initial stages of a project because they can be done quickly and modified easily as the design evolves. Eventually sketches have to be turned into proper engineering technical drawings if the part is to be manufactured.
In this laboratory assignment, the flange mount bearing design (described in Chapter 15 of the textbook and shown as a sketch below) is to be transformed into a technical drawing suitable for manufacturing. Figure 1: Flange mount and bearing conceptual design. 1 Laboratory 3 I Intestinal: Flange Mount Bearing Ill ? Steps and Calculations: Use Intestinal to create orthographic working drawings of the bearing flange mount and shaft following the instructions in Chapter 15 of the textbook. You will produce two drawings. The first drawing will be similar to Figure 15. 1, but with two differences. First, for your drawing, change the length of 10. 00 in Figure 15. 91 too new length equal to 10. ##, where”##” are the last two digits of your student number. This length can be changed with the offset command to ‘offset the vertical line’ 10. ## divided by 2, instead of 5, units to produce Figure 15. 46 as described on page 272. The second difference between your drawing and Figure 15. 91 is that your drawing should not include the errors in Figure 15. 91. Before you start your drawing, check Figure 15. 1 for errors. You are to produce a drawing like Figure 15. 91, but correcting any errors you find, using the tutorial in Chapter 15 as a guide (Section 15. 3). The second drawing will be of the bearing flange mount. Figure 15. 139 shows a drawing, however, there may be errors in the drawing. You are to produce a drawing like Figure 15. 139, but correcting the errors, using the tutorial in Chapter 15 as a guide (section 15. 4). Of course, in a real-world situation you will not have step-by-step instructions for creating your working drawing.
Using your experience from the bearing flange mount exercise, provide engineering drawings for each of the three components for which you calculated the volume and surface areas in Lab 2. These components are shown below in Figures 2 to 4. Refer to Chapters 12 to 15 of your textbook for guidance on how to produce engineering drawings. Include only the most essential dimensions and follow the dimensioning rules outlined in class and in your textbook. Make sure to show all hidden lines and centre lines. The drawings must have an appropriate title block; a template is available on culture.
Hole radii in the two figures are 1 CM. Figure 2 2 Laboratory 3 Figure 3 Figure 4: The precise dimensions of this component are given below: The base of the rectangular block is 8. 0 CM x 10. 0 CM A circular protrusion (diameter 4. CM and height 3. 0 CM) is connected to the base such that the symmetry axis is normal to the top face plane and intersects the geometric centre of the base. There is a hole through the center of the protrusion that extends through the base to the bottom of the base. The diameter of the hole is 2. 0 CM, and the depth of the hole is 5. CM. There are 4 through-holes, one at each corner of the rectangular top face: Diameter = 0. 5# CM. Replace “#” with the last digit of your student number (Note: these 4 holes go all the way through the base) The center of each of the 4 through-holes is 0. # CM from each edge. Replace “#” with the second last digit of your student number IV ? Report Requirements and Deliverables: Your report shall include the title page from the lab template, your working drawings of the bearing mount and shaft, and your working drawings of Figures 2, 3, and 4.