Week 11 - Project - A pillar Design with Master Section
AIM
• To create A Pillar Design with the master section given as
the intersection sketch with the Class A surface
• And create the tooling axis and perform the Draft
analysis for the final solid part.
Class A
• Class A is an aesthetic surface with the highest quality
finish.
• Most Class A Surfaces for an Automotive Component are
made using AUTODESK ALIAS.
• It is taken as a reference by the Automotive Plastic
Designer to create CLASS B, CLASS C surfaces.
• It provides the style team's look for the component,
which the part design engineer uses to develop the
component with all of the engineering requirements.
• Check for continuity of the given surface using Join or
Boundary commands.
Tooling axis-Bisecting line Method
• Using a dummy tooling axis, the bisecting line method is
essentially used to identify the correct tooling axis.
• When using the bisecting line method, a line is utilized
to either bisect the two lines or indicate an error,
indicating that the two lines are parallel.
• We intersect the surface with the appropriate plane to
determine whether or not the surface is tool able.
• This produces a drawing with two lines, which we can
then bisect to produce a third line at the intersection of
the two lines.
Side Core Axis
• Using the bisecting line method or create using
the given master section.
• We created the side clearance axis for the dog
house.
Draft Analysis of class A
• Use the Featured Draft Analysis tool in the tools
to now analyse the draft.
• After locating the compass and aligning it with
the tooling axis, click on the lock symbol after
aligning, and then click again on the surface
after opening the draft analysis tool box.
Creating Class B Surface
• First, offset the surface to 2.5mm, some errors
may occur and some parts got removed.
• Click keep all sub-elements.
• And use fill, sweep, boundary, extrapolate, and
trim commands to close the patches.
• Then join all together.
Creating Class C Surface
• At first extract the boundaries of the Class A
surface and B surface.
• After that use the sweep option to create
the C surface
Final output
• Now trim the Class A, Class B and Class C
surfaces to get the desired output.
• And make it as a solid body using close
surface feature in part workbench.
DOG HOUSE
• A plastic design element called a "dog home" is
employed.
• Dog homes are a supporting element.
• In order to strengthen their robustness, snaps,
locators, and screw bosses may occasionally be
put on them.
• Draft analysis is applied to dog homes to
minimise component breakage during ejection
from the mould chamber.
• On the B-surface, a dog house and other
engineering elements are constructed.
DOG HOUSE Creation
• Dog houses are made to prevent the SINK MARK
that screw bosses leave on CLASS-A surfaces and to
address the length problems that arise when
attaching screw bosses to other components.
• It is especially helpful when the part needs screw
bosses that are perpendicular to the direction of
tooling.
• C thickness should be 40% of the main wall
thickness T
• Minimum width of the dog house is 12 mm.
• Height of B should be 3-6 mm
FINAL OUTPUT
Final Draft analysis
• Use the Featured Draft Analysis tool in the
tools to now analyse the draft.
• After locating the compass and aligning it
with the tooling axis, click on the lock
symbol after aligning, and then click again
on the surface after opening the draft
analysis tool box.
• Do this for both the axis and analyse A B C
surfaces and Dog House.
CLASS A+B+C SURFACE
PART BODY
DOG HOUSE PART
DOG HOUSE
TREE STRUCTURE
