{"id":501,"date":"2022-11-30T17:47:34","date_gmt":"2022-11-30T17:47:34","guid":{"rendered":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/?p=501"},"modified":"2022-11-30T17:51:28","modified_gmt":"2022-11-30T17:51:28","slug":"designing-the-hubs-and-wheels-for-the-fire-fighting-robot","status":"publish","type":"post","link":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/2022\/11\/30\/designing-the-hubs-and-wheels-for-the-fire-fighting-robot\/","title":{"rendered":"Designing the Hubs and Wheels for the Fire-Fighting Robot"},"content":{"rendered":"

As part of the final project for my first-year engineering class, I had to design one of the wheels for the fire-fighting robot. The wheel had to fit on a 28BYJ-48 stepper motor and have a hole on the side for a 3 mm screw. I used this image<\/a> from Cookie robotics for the dimensions of the stepper motor. However, due to the way 3D-printing works and other variables, just copying the dimensions for the wheel’s hub will not let it fit over the stepper motor. Since the size I tell it to print is not what comes out. As a result, I had to print multiple variations and edit each one slightly until I printed a hub that would fit. Since I had to print multiple versions, I only printed the hub of the wheel instead of the entire thing to speed up the print and save material. I changed the inner width of the hub for each iteration until it would fit comfortably on the motor. Furthermore, I changed the total diameter on the final version so the screw would have more material to grip onto. I used this formula for determining the size I should print the next hub:<\/p>\n

How big to create a part in CAD = (What you originally told it to print) \/ (size it actually printed) * (Size it should have printed)<\/p>\n

It took four different iterations until I found the correct dimensions. My final dimensions are a total diameter of 11 mm, an inner height of 5 mm, and an inner width of 3.3 mm. Here are all of my different attempts, with the final hub design being on the far right.<\/p>\n

\"\"<\/p>\n

After finding the correct dimensions for the hub, I could move on to designing and printing the entire wheel. I designed the with a pattern of oval holes to remove excess material and speed up print time. Here is the final product.<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

As part of the final project for my first-year engineering class, I had to design one of the wheels for the fire-fighting robot. The wheel had to fit on a 28BYJ-48 stepper motor and have a hole on the side for a 3 mm screw. I used this image from Cookie robotics for the dimensions […]<\/p>\n","protected":false},"author":1821,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[8,9],"tags":[],"class_list":["post-501","post","type-post","status-publish","format-standard","hentry","category-engr-199","category-fire-fighting-robot"],"_links":{"self":[{"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/posts\/501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/users\/1821"}],"replies":[{"embeddable":true,"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/comments?post=501"}],"version-history":[{"count":8,"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/posts\/501\/revisions"}],"predecessor-version":[{"id":513,"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/posts\/501\/revisions\/513"}],"wp:attachment":[{"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/media?parent=501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/categories?post=501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/portfolio.wcu.edu\/jclay2-engr\/wp-json\/wp\/v2\/tags?post=501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}