Week 8 - Challenge 2 - Base Bracket Design

MODEL 1

DRAFT ANALYSIS

• Tooling axis is to be determined by checking x, y and z direction of tooling axis.
• The best suited axis is taken, in this case z axis is taken
• A dummy tooling axis is made at the hole on the base bracket
• The problamatic area for draft is checked and a intersection line is created
• 2 lines are created on the angle of the draft present and a bisecting line is created with the 2 lines
• This bisecting line is the drafting axis
• Draft analysis is done based on this tooling axis
• The green colour represents the draft angle is within the required limit

CREATING CLOSED SURFACE

• WIth the given Class A Surface, Class B Surface is created
• First, the required surface is extracted
• Then the extracted surface is untrimmed and extrapolated with Continuity for curvature and Point continuity for Propogation mode
• This surface is offsetted for the required thickness, in this case 2.5mm
• The remaining surfaces are trimmed
• Edge fillet of 5.5 mm is used for the edges as 3mm is the required and thickness of 2.5mm gap is added to give 5.5mm edge fillet
• The Class B surface is created
• The closing of Class A and Class B surface created Class C Surface
• This is done using Sweep commmand
• The line sweep is selected
• Subtype is chenaged to Draft Direction, The Class A boundry is selected for guide curve and Tooling axis is selected for Draft direction
• Standard option is selected for both Length type 1 and 2
• Now, the desgin is changed to Part design for closed surface option