exercise 1 orthographic projection isometric views unim

7/27/2019 Exercise 1 Orthographic Projection Isometric Views UNiM

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MM1DM1: Design and Manufacture

Drawing Office Exercise 1: Orthographic Projection & Isometric ViewsDrawing is a practical subject and you will learn mainly by performing the exercises. It is

expected that you will look carefully at the exercises before you come to the class such

that you can identify in advance where you will need support in the class.

These exercises contribute to the module assessment and you must hand in your workat the end of each Drawing Office even if you have not completed all theexercises. Work handed in late will not be marked without supporting extenuatingcircumstances documentation. Please ensure your name and DM1 workshop group is

printed clearly on every sheet you submit. Marked work will be returned to you at yournext Drawing Office.

Student Name

Student ID No

Student DM1 Workshop Group No XXXXXXXXXXXXXXXXX

Date of submission 22/10/2012

Exercise 1A

Accuracy (is it right?, 5 marks max per object,see over for marks scheme)

Marks out of 30

Quality of drawing (see over for marks scheme) Marks out of 5

Exercise 1BAccuracy (is it right? 4 marks max per object, seeover for marks scheme)

Marks out of 40

Quality of drawing (see over for marks scheme) Marks out of 5

Exercise 1C

Accuracy (1 mark per object, plus 4 bonus) Marks out of 20

Exercise 1 Total Mark Marks out of 100

Markers name (please write clearly!)

Additional feedback from the marker will be given on the drawings if necessary

Drawing Office Exercise 1 Coursework ReceiptPlease retain this receipt as proof your coursework was submitted. In the unlikely eventthat your coursework goes missing no credit will be given if you cannot produce thisreceipt.

Student Name

Student ID number

Student DM1 Group number

Coursework received by (write clearly)

Date

School of Mechanical, Materialsand Manufacturing Engineering

Cut or tear off using ruler


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Exercise 1A Marks SchemeAccuracy (out of 5)5 completely correct4 - mostly correct, a minor mistake3 mostly correct, a couple of minor mistakes2 some correct but areas of significant mistakes

1 mostly wrong but has attempted the drawing0 completely wrong or omitted

Drawing quality (out of 5)Good features include:

Good line quality (not too wide or too thin, not smudged)Construction lines clearly more faint and narrow than outlinesDotted lines (hidden detail) and centrelines included

Corners reasonably orthogonalCompasses used for curves

Poor features include:Line types cannot be distinguished

Lines smudged (too soft a pencil)No attempt at orthogonalityCurves poorly sketched in

Exercise 1B Marks SchemeAccuracy (out of 4)4 completely correct, orthogonal axes at correct angles, drawing correctlyoriented to axes3 minor mistakes, e.g. small features incorrectly represented2 significant mistakes e.g. isometric axes not used or at wrong angle, drawingwrongly oriented

1 poor attempt, largely wrong but has tried0 omitted or completely wrong

Drawing quality (out of 5)

Good features include:Good line quality (not too wide or too thin, not smudged)Construction lines clearly more faint and narrow than outlinesOrthogonal axes used and at approximately the right angles

Curves neatly and accurately sketched inPoor features include:

Line types cannot be distinguished

Lines smudged (too soft a pencil)No attempt at using isometric axesCurves poorly sketched inDotted lines (hidden detail) and centrelines included

Exercise 1C Marks SchemeOut of 20, 1 mark per solution plus up to 4 bonus marks for alternative solutions.


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Exercise 1A: Creating 3rd Angle Orthographic Views

For each of the objects shown below draw 3 orthogonal views (front elevation,end elevation and plan). You should use a ruler for your sketches and try to

maintain a good standard of drawing. Some marks are awarded for theappearance of your drawings and the effort you have put into creating them.

Your drawings should be approximately to scale on plain A4 or A3 paper. Includeyour name and group on each page you submit.

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Please note: Dimensioning will be covered in a later lecture; these dimensions do not conform to

recognised conventions.


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Exercise 1B: Creating Isometric Views

How to create an isometric view is explained in the lecture 1 handout. For reference, the views in exercise 1A are isometric; note that

vertical lines are vertical and horizontal lines are at 30 to the horizontal. There is no perspective and no foreshortening.

Each object below is represented by three 3rd angle orthogonal views. For each object you should create an isometric view in the boxes

provided. You should use a ruler and ideally a 30 set square although the 30 angle can be estimated if necessary.

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Student Name: Student ID number:


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Exercise 1C: Spot the deliberate mistakes!

On each of the sets of 3 orthogonal views one (or more in some cases) line (solid or hidden detail) ismissing. Add the missing lines on the sheet. You will probably need to create the isometric view tocomplete some of these exercises. In some cases there is more than one possible solution, forwhich up to 4 bonus marks can be attained.

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Student Name: Student ID number:

exercise 1 orthographic projection isometric views unim

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