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Shells & Threads: A Comprehensive Guide to Effective Sketching and Modeling Techniques

Dive into the intricacies of modeling with "Dressing Up in Shells & Threads." This guide covers sections IE 1225, emphasizing effective sketching techniques that adhere to specific constraints. Learn how to utilize the bottom face for unique shaft designs and explore the importance of drafting and mirroring. The tutorial also introduces essential tools for thread analysis and circular patterns, helping you create complex geometries efficiently. Follow carefully laid-out steps for constructing grooves, pockets, and arrays, ensuring you save your work as you experiment with parameters!

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Shells & Threads: A Comprehensive Guide to Effective Sketching and Modeling Techniques

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  1. Dressing Up “In Shells & Threads” IE 1225 Sections 3.6/3.7 J. Voss & R. Lindeke

  2. Start With a Center Axis and Profile following constraints!

  3. Shelling out the shaft: use the Bottom Face “to remove”

  4. Likely The Pad is Reversed to Pass Through the Part!

  5. As a Wireframe View:

  6. With 2 Draft (and reversed Arrow) using the top face as Neutral!

  7. Make a Circle – Pocket it through the “Pad” – then Fillet the Inside Edge of the Pad

  8. So we did learn how to add Threads (a Bit late!)

  9. Thread Analysis Tool was Hidden along the lower Icon Set

  10. Circular Patterns in Modeling too! (Subset of Transformations in this environment)

  11. The Counter bored Hole – here we need 4 instances – which includes the original! (unlike in Sketcher) This whole thing was quick and easy – hope one like it appears on the Mid-Term next Wednesday!

  12. Set the Lines at the Complement of the Angles Shown at this step in the tutorial: (86.538 & 83.077 respectively)

  13. While Profiling – Use Computed Angles – Set Lengths for the ‘top-arc’ Note the Construction Elements (circles and lines)

  14. Be careful while working it out – Set the Angles as CONSTRAINTS after profiling (last to be sure)!

  15. Seriously COOL! – But Reverse Direction! Hum … Better save here – too much time is invested!

  16. After Mirroring: (about ZX Plane)

  17. Build Constrained Rectangle – ‘Groove’ it using H-Axis

  18. Making another Circular Pattern: Pick the Pocketed Slot as Object – and Top face of the Pad of the (original) tooth as reference element

  19. Build this sketch – Then Quick Trim to get Pocket Patterns – Pocket up to last – And Mirror about ZX plane

  20. For the “Keyed Hole” – sketch the circle – add a rectangle – constrain it then quick trim the circle inside the rectangle and the rectangle inside the circle!

  21. Build the Slot (draw and constrain a rectangle) – then Pocket it build a ‘Rectangular’ Array with 5x2 elements

  22. After Getting the “Correct” Rectangular Pattern – play around with parameters and see the effect – but be careful – save your part before embarking on this trip!!!

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