» » I need a "bicycle" help!I need a "bicycle" help!I need
» a
» » "bicycle" help!I am taking the mechanical desktop class and i have
» a
» » project to do in 2 weeks. I want to model a bicycle but i do not know
» » where to begin. Please help!
»
» Hello pleasures,
»
» This advice assumes that you know how to use MDT. They are things to
» consider.
»
» I ssume your have a bike that you will measure parts from or possibly you
» have a set of drawings with dimentions of a bike assembly (even better).
»
» Since you will be designing an assembly, you need to consider which
» approach to take. There are two:
»
» Bottom Up Assembly Approach
» In a "bottom up" approach, large or complex assemblies are broken down
» into smaller subassemblies and components. Each component is designed as
» a separate part by one or more designers. The component parts can be
» archived in a library of files. This is the most efficient way to create
» and manage large or complex assemblies.
»
» Each part is inserted into the active part creating a component instance
» and thus an assembly. The component becomes the child of the active part
» and can then become the active part. Because an instance of the actual
» part is used, you can have it update automatically if the archived part is
» modified or you can modify the archived part by activating and modifying
» its component instance.
»
» Top Down Assembly Approach
» In a "top down" appraoch all components are typically designed by the same
» person within a single part. Many modeling apps allow you to create and
» design a component while you are in the assembly part - switching amoung
» components to edit as you go along. This is also called "In Context"
» assembly design. You can work on a component (i.e., the sprocket) within
» the context of the assembly. This is an advantage, as you can consider
» form, fit and function of the component as it relates to the assembly
» (i.e., how the sprocket mounts to the sprocket assembly).
»
» As a beginner, it may be easier for you to use the "Bottom Up" approach
» and design each part of the bike as separate parts files and them create
» an assembly where you insert and align each component as required. I say
» this because the bike likely will already be designed (unless you plan on
» designing a unique bike as you go).
»
» Try not to get caught up in modeling all of the minute features of each
» part (i.e., every fillet and chamfer), initially anyway. After you
» complete the assembly you can always go back and edit some of the parts to
» complete their definition. Also, this is good advice to prove out the
» structure of the assembly (i.e., mating constraints).
»
» That's it for now.
» I'll try to ad more as time goes on.
» Good luck!
»
» Thanks for using the Q&A Board! ;-)
»
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Thank you! :-)