Lab06_StudentsInstructions

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School

Simon Fraser University *

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Course

106

Subject

Mechanical Engineering

Date

Dec 6, 2023

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pdf

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3

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IAT106 1 of 5 IAT106: Spatial Thinking and Communicating Week 06 Lab Auxiliary Views, Cross-Sections, and Assemblies In this lab, you will complete exercises on auxiliary views, cross-sections, and creating assemblies in CAD. The lab is divided into three parts. For Part I and II, your TA will complete a sample exercise, and then you will complete others on your own. Your TA will guide you through the exercises for the CAD component in Part III. Part I: Auxiliary Views (Chapter 6) A face will often not be parallel to any of the primary planes in a multi-view drawing, which results in no view that is true shape and size. Usually, you will want a view of true shape and size, so you will need to construct an auxiliary view. Follow along with the TA using the image below. You do not need to hand this exercise in. TA Demo: Fig 6.17 exercise #1 (pg. 355) For each exercise listed below, sketch the given views and create a partial auxiliary view for the inclined surface. You should use graph paper for these exercises. Label the points of interest, label the fold lines and keep your construction lines. Each drawing should occupy half a page. In-class: Fig 6.17 exercise #5 (pg 355) Homework: Fig 6.18 exercise #4 and #10 (pg. 356)
2 of 5 Part II: Cross-sections (Chapter 8) As you saw in the lecture, the interesting parts of an object are often hidden by the object’s surfaces. A cross-sectional view of the object is needed to communicate design intent in this situation. Follow along with the TA using the image below. You do not have to hand in this exercise. TA Demo: Fig 8.57 exercise #12 (pg. 462) Sketch the given views for each exercise listed below and create a cross-section for the given cutting plane. You should use graph paper for these exercises. Each drawing should occupy half a page. In-class: Fig 8.57 exercise #5 (pg. 462) Homework: Fig 8.57 exercise #8 and 15 (pg. 462 and 463) Part III: Assemblies in CAD This week you’ll learn to compose multiple parts in CAD to assemble a functioning object. Exercise : Start the OnShape learning path by clicking here: https://learn.onshape.com/learn/learning-path/introduction-to-cad The TA will help you find the tutorial. You will have to do three courses within this learning path, i.e., Introduction to Assembly Design. It will take about 60 minutes to complete these courses. If you can’t finish it in the lab, you can complete it after lab. Submit the links of the OnShape document via Canvas before the next lab.
IAT106 3 of 5 Submission Instructions All homework exercises are due next week as indicated in Canvas. Upload the images from your sketches to the Lab06 container and submit the hard copies to your TA before the next week’s lab. For the CAD assemblies, copy the sample file available under Week 06 submissions folder and name it by following the convention: <YourSFUuserID>_<lab section>. Assigned Readings from the Textbook Auxiliary Views: Ch 6: 6.1 to 6.2.7 and 6.3.4 Cross-sections: Ch 8: 8.1-8.2 and 8.4.1 - 8.4.6 Criteria Item Due Individual or Team Criteria Activity Mark Part Mark Total Auxiliary views next lab Individual 1.2 view alignment 0.1 fold and construction lines 0.25 named vertices in all views 0.25 accurate shape 0.6 Cross-sections next lab Individual 1.2 view alignment 0.1 section cut lines hash marks 0.1 0.1 centerlines 0.2 no hidden lines 0.2 accurate shape 0.5 CAD assembly next lab Individual 1.6 Subtract 0.5 for every incorrect mate Test animation 1.5 0.1 TOTAL 4
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