Week 8 - Challenge 2 - Base Bracket Design

AIM-Create the Base Bracket Plastic component through the given Class-A surface. To begin with, the tooling axis for the given Class-A Surface should be created meeting the requirements of the draft angle and at the end perform the Draft analysis on the model.

BASE BRACKET PLASTIC

Draft analysis help to draft part eaisly removable from mold. plastic part angle of draft is 0.5 to 3 degree. in sheet metal part draft angle 7 degree to more. mold part ejection from mould , draft angle to perpendicular .

in base bracket plastic part to study CLASS A SURFACE , CLASS B SURFACE, CLASS C SURFACE

STEP -1

FIRST ALL CHECK SURFACE JOIN

tooling axis-

• tooling axis define the ejection mold direction. tooling axis is z direction.
• create a point on circle and create a dummy line axis .
• dummy line and point help to create a plane
• intersect on plane , CLASS A surface.
• two line create the when ejection of part problem.
• two line bisecting the tooling axis in z direction

step -2

create the CLASS B SURFACE

EXTRACT the rib of CLASS A SURFACE

UNTRIM the all surface

extrapol the surfaces for all sides bisect the other surfaces

trim the surfaces are bisect

three surface to create the rib 1

offset from class a surface thikness of part(2.5mm)

now repeat the same step follow create the rib 2

now create the base bracket of part

extract the all surfaces of base bracket

untrim the surfaces

extrapol the sufaces

trim it

offset it 2.5 mm

now , geometrical set for final trim for create CLASS B SURFACE

CLASS B SURFACE

NOW TO CREATE THE CLASS C SURFACE

EDGES TO CREATE THE BOUNDRY

& SWEEP IT 3 DEGREE tooling axis

EXTRALPOL THE ALL SURFACES AND TRIM IT.

TWO HOLES create the boundry and sweeep it tooling axis

join the all surfaces

now

class b and class c surface trim it

FEATURE TREE

problems-

create the class c surface

solve

RESULTS- CREATE A SOLID BODY BASE BRACKET DESIGN