MEC106 Engineering Drawing
Course Work
To be Released on Friday, 14th November, 2025
Due on Sunday, 14th December, 2025, 23:59
Assignment Regulations
l This is an individual course work. Each student MUST submit one soft copy (pdf format) of the requirement documentation via Learning Mall by the due date.
l A University assignment cover sheet (provided on Learning Mall) must be used as the front page of your assignment, and make sure that your name, student ID and email are clearly written on the cover sheet.
l You may refer to reference textbooks and lecture notes to answer problems, however, the assignment should be your own work.
l Where you do make use of other references, please cite them in your work. Students are reminded to refer and adhere to plagiarism policy and regulations set by XJTLU.
l Students may make non-substantive use of AI, which is limited to tasks such as grammatical corrections, formatting adjustments, or generic suggestions
l Submissions maybe accepted up to 5 working days after the deadline has passed; a late penalty of 5% will be applied for each working day late without an extension being granted. Submissions over 5 working days late will not be marked. Emailed submissions will NOT be accepted without exceptional circumstances.
Assessment Weighting
This assessment counts for 100% of the final mark of the module.
Aims
This project aims to test the students’ skill and ability to understand engineering drawing standards, read and generate engineering drawings of components and assemblies via computer-aided tools. Engineering drawings are a basic means to view, communicate and document engineering designs, a common language for engineers and professionals. 3D modelling of an engineering solid via CAD software is the basis of engineering design. It can be originated from imagination, hand sketches or a formal drawing. Engineering drawing is a combination of graphic communication and word language containing four basic elements including orthographic views (sections), dimensioning (tolerance), title block and general notes. Engineering standards include proper line usage, sheet and scale selection, and formal letter style. If the object is correctly positioned relative to the projection planes, the dimensions of features will be represented in true size or in a selected scale in one or more of the views. Part detail drawings provide the most accurate description of 3D objects and structures for engineering, manufacturing and construction requirements. Last but not least, assembly drawings are used to both describe how parts are put together and explain the function of the entire unit. In order to generate a proper assembly drawing, special attention should be given to general dimensions and fit tolerance, in addition to the elements required by engineering drawing. There should also include a table to contain all required components and their quantity.
Learning Outcomes
On completion of this assignment, you should be able to:
1. demonstrate a clear understanding of the standards in engineering drawing;
2. apply orthographic projection to view and analyze engineering solids;
3. propose the isometric representation of engineering components;
4. apply spatial-visual thought, spatial imagination, exploration and innovation.
Design Examples
The risk to lose full or partial points or marks would be affected, if students do not follow the instructions and the given grading information.
In an engineering drawing, four elements are essential to depict all the details including views, dimensions, title block and general notes. The views are generated through projection of 3D model to imaginary planes. Orthographic view (and side views if applicable) are used to depict all details of the 3D model. Dimensions including all the sizes and shape, tolerance and necessary Geometric dimensioning and tolerancing should be given upon the views according to engineering standards. Necessary information should be included in the title block and general notes.
Part drawings (also known as component drawings or detail drawings) provide detailed information about the individual units. Assembly drawings are a type of technical drawing used to represent items that consist of more than one component. They show how those components fit together. Examples of part drawing and assembly drawing are given as follows in Figure 1 and Figure 2, respectively.
Figure 2
All elements should be included in generating an engineering drawing and each element should accord with standards.
Design Questions
The questions contain three sections. You need to provide answers to all three questions.
Section A (30%)
Figure 3 shows an engineering drawing of a bearing seat. Please create the 3D model of this component using a CAD software. Display 5 pictures visualized from different angles of the 3D model. Please also specify useful information and details displayed in Figure 3 which are essential for manufacturing the component but cannot be visualized from the 3D model by texts.
Figure 3
Figure 4 displays the isometric view of a 3D model of a gear shaft. The 3D model is given on Learning Mall Core Page. Please generate a detail part drawing of the component with proper graphic and text description.
Hint: Please mind the tolerance where the gear fits with other parts.
Figure 4
Section C (40%)
Figure 5 displays the isometric view of a 3D model ofa hydraulic pump. The 3D model is given on Learning Mall Core Page. Please generate an assembly drawing of the assembly with proper graphic and word description. Please use proper views, dimensioning, title block and general notes that accord with engineering standards. Don’t forget about the table of components.
Figure 5
Deliverable
A formal file (pdf format) should be generated to accompany the design submitted to Learning Mall.
Please only include your solution to the questions in your report.
In Section A, please answer with pictures and word languages. Present 5 images and use single column, 1.25x line-space, 2.54cm for page edges for the text description. The font should be Times New Roman and font size for content should be 11pt.
In Section B, only one part detail drawing should be submitted. Please choose suitable sheet size and keep the original size of your drawing.
In Section C, only one assembly drawing should be submitted. Please choose suitable sheet size and keep the original size of your drawing.
Please bind the above files into a single file named with “MEC106 your name” . Please make sure you use the University assignment cover sheet (provided over Learning Mall) as the first page and make sure that your name, student ID and email are clearly written on the first page.
Grading Information:
Please scan, or photo your completed design and put/integrate them with the report in one pdf file (clearly presented). Please choose the size of the drawing sheet and keep the size of the sheet in your report.
1. Section A (30%)
1) Design Layout (20%):
Please present 3D view of the component. All details should be displayed thoroughly.
2) Engineering details for manufacturing (10%):
Please use text to describe all details that cannot be visualized from the 3D model.
2. Section B (30%)
1) View (15%)
Please use adequate views to present all the details of the object (selection from orthographic, auxiliary and section views).
2) Dimensioning (10%):
Depict the component with full dimensions that accord with engineering standards. Use your engineering judgement to identify places that require tolerance and geometric dimensioning and tolerance. Make such annotations on the drawing according to engineering standards.
3) Title block and general notes (5%)
Provide proper information in the title block and general notes.
3. Section C (40%)
1) View (20%)
Please use adequate views to present all the details of the object (selection from orthographic, auxiliary and section views).
2) Dimensioning (10%):
Depict the assembly with general dimensions that is needed to put all components together. Annotate all fitting tolerance.
3) Title block, general notes and table of components (10%).
Provide proper information in the title block and general notes. List all components in the table of components (BOM).