{"id":55,"date":"2024-09-26T16:59:23","date_gmt":"2024-09-26T20:59:23","guid":{"rendered":"https:\/\/wp.stgeorges.bc.ca\/vincentz\/?p=55"},"modified":"2024-10-09T12:03:40","modified_gmt":"2024-10-09T16:03:40","slug":"erw","status":"publish","type":"post","link":"https:\/\/wp.stgeorges.bc.ca\/vincentz\/2024\/09\/26\/erw\/","title":{"rendered":"Cad blog post:"},"content":{"rendered":"\n
By Vincent Zhao | 9\/26\/2024
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Here, I\u2019ll walk through my experience with the first two tutorials of my CAD learning journey: Introduction to Part Design and Introduction to Parametric Feature-Based CAD. <\/strong>These tutorials focused on foundational skills like sketching and extruding, which are important for turning 2D drawings into 3D models.
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After completing the sketch, the next step was to take that 2D drawing and extrude it into a 3D object. The tutorial provided step-by-step instructions on how to select the sketch and use the “extrude” feature to transform it into a solid object. Based on the tutorial, I was able to correctly follow it up to now.<\/p>\n\n\n\n

However, I encountered a frustrating challenge during this phase. The instructions were somewhat unclear, and when I tried to extrude the sketch, it did not yield the correct result. I later realised that the layout had to be drawn from a flipped, which was not what the tutorial showed.<\/p>\n\n\n\n

After a short while, I was able to do it:<\/p>\n\n\n\n

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Revolve exercise: <\/strong><\/h2>\n\n\n\n

The next practice was by far the most difficult and confusing task so far, as the tutorial instructions were difficult to follow and demanded specific results from brief directions. 
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Initially, I was stuck on designing the 2d shape and had a very difficult time correctly formatting the dimensions. For an even line with the midpoint centered on the Y axis, two lines of equal distance need to be drawn, and a line drawn over them for that to occur – which was one of the biggest obstacles.<\/p>\n\n\n\n

However, shortly after figuring out the proper setup, I was able to correctly map it out and extrude the shape into a thin cylinder:


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Assembly exercise:<\/strong><\/h2>\n\n\n\n

Next, I moved onto the assembly tutorial<\/p>\n\n\n\n

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This section was also quite frustrating and weird to initially setup, especially with the triad manipulator\u2019s Z axis, and aligning the Z axis to the diagram.<\/p>\n\n\n\n

But in the end, I managed to successfully complete it and got the correct mass:<\/p>\n\n\n\n

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Water bottle<\/strong><\/h2>\n\n\n\n

After this tutorial, I decided to begin and design my own product to test my knowledge. With a simple design and only some materials, I found that it would be a good display of skills to design a simple water bottle.   <\/p>\n\n\n\n

These are some reference photos online:<\/p>\n\n\n\n

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The premise of a water bottle is very straightforward. For the outline, I simply create a basic water bottle shape, then use the revolve tool to turn the bottle into a solid bottle. <\/p>\n\n\n\n

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Then, with some guidance from my peers, I was able to properly set up the shell tool, and then added fillet layers to the design to make it look more natural – for the ideal hollow water bottle shape! <\/p>\n\n\n\n

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This is the outline of my bottle, now all that’s left is to make the cap in other parts studio and then put them together to demonstrate assembly skills.<\/p>\n\n\n\n

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This is what it looks like after I extruded a small cylinder shape to make a fitting hole for the water bottle. I even extruded out the bottom to make it hollow and an actual cap which I could put onto the bottle base. <\/p>\n\n\n\n

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I realized that the cap was smaller than the bottle, so now I had to measure the top of the bottle to make sure that it is the size of the inner circle of the cap, which is 1.412243 cm * 2 = 2.824486 cm<\/p>\n\n\n\n

After some redo\u2019s and trial and error periods, I was able to finalize the bottle, and put them into the assembly together<\/p>\n\n\n\n

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After some tweak ups and coloring, I am finished building the main parts and assembly: <\/p>\n\n\n\n

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Then finally, to finish, I made a mechanical drawing with the bill of materials for future aspiring water bottle engineers to replicate this grand mechanism that I designed.<\/p>\n\n\n\n

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Here is my process of showing how I mated the two parts together, with a slider and limits.<\/p>\n\n\n\n

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