Week 9 - Attachment Feature Creation (Ribs & Screw Boss) - Challenge 1
AIM: Attachment Feature Creation (Ribs & Screw Boss) of door handle
Objectives:
- Design of ribs for drill handle following the design rules. Rib root thickness analysis should be carried out.
- Design of screw boss for drill handle following the design rules
- Work on to write a detailed report based on the draft analysis result and add the images required
- Performing draft analysis on the final component
Tooling axis: The Tooling Direction is basically the direction that the mold pulls a part. The mold is built in two separate pieces. Basically, we have a Cavity side and Core side. The Core pulls apart from the Cavity and that's Tooling Direction. Creating a line is called tooling axis.
Create a point by visualizing in all axis for this model we can create a point on surface and line in Y direction. Were Y axis chosen by visualizing hence Y is the tooling direction.
Draft analysis of class A surface for feasibility check
Class B surface:
Take offset of class A surface of 2.5mm and hide class A surface now for offset part we get some gaps at fillets while offsetting it so we need to close that gaps. Now, take multiple extract wherever the gaps are visible then take boundary and create curves extrapolate them and trim out the unnecessary part add edge fillet after trimming the part doing it individually. Follow same procedure to fill every gaps. After filling extrapolate the surface for 4mm.
Class C surface:
Take the class A surface create a boundary curve and hide a surface A sweep that curve for at an angle of 90 degree with respect to surface with some extra length. Unhide Class A surface join both sweep surface and Class A surface trim unnecessary part.
Create closed component using Close surface tool in Part design
Rib design:
Ribs provide a means to economical stiffness and strength in molded parts without increasing overall wall thickness.
Guidelines for Ribs:
Draft , thickness, height, thickness at top, optional Radius.
Screw Bose design:
Draft, thickness, height to diameter ratio, radii
After creating of these Ribs and Screw Bose add them to main body Door handle give edge fillet as per given instructions.
dimensions after using intersection tool
Final component is formed
Check the feasibility of final component using feature draft analysis.
Tree strcture
