Week 9 - Attachment Feature Creation - Challenge 2

ATTACHMENT FEATURE CREATION_CHALLENGE-2

OBEJECTIVE:

To Create the Dog House for Door tirm plastic Component from the given Class-A surface.To Create the tooling axis for the given Class-A Surface meeting the requirements of the draft angle.To Attach B side Features in the component. And also to perform the Draft analysis on the model.

GIVEN:

Thus the following as the Input of this components Class-A Surface and its thickness becomes 2.5 mm.

TOOL USED: CATIA V5

STAGE_1: TOOLING AXIS CREATION

The Tooling Direction which one is the direction that the mold pulls apart. The mold is built in two separate halfes of like Cavity side and the Core side. The Core pulls out from the Cavity along with the certain direction which is called as Tooling direction or Tooling Axis.

From this given Class-A surface has cleared with Y-component side. So here I create the tooling axis as followed by along with the Y direction by using of point-direction line definition.

STAGE_2: DRAFT ANALYSIS FOR CLASS-A

By using of Feature Draft Analysis with the Minimum draft angle of 3 deg along with the above tooling axis. Thus the results shown here as following as,

STAGE_3: SURFACE MODELING

STEP_1: CLASS-B SURFACE CREATION

Class-B surface, In which can be easily defined as the thickness of the part and it is not visible which is inside surface of the Class-A. For the following Door trim component thickness as 2.5 mm from the Input data. While offseting Class -A for 2.5 mm of thickness directly by applying Offset surface definition And then we B-side of the following one which have some of its patch holes/no surfaces avail in the minimal fillet regions. Then the patchs will be created into simplified surfaces to be obtain the complex one which Class-B surace.

Commands used: Extract,Untrim,Extrapolate,Offset, Split & Trim,Edge fillet.

STEP_2: CLASS-C SURFACE CREATION

By defining the Class-C surface with respect to the Class-A surface. From the Class -A surface edge boundaries used to performed to create the Class-C surface.

Command Used: Swept surface-along with the draft direction & along with surface ref, Multi-Section Surface, Boundary definition, Curve smooth, Extrapolate, Trim, Line definition, & Join Definition.

STEP_3: JOIN CLASS-A & C

By using of Join Definition.

STEP_4: FINAL TRIMS

By using of Trim Definition. Here we obtain the closed surface body of Door tirm.

STAGE_4: SOLID PART_CLOSE SURFACE

By using of Close surface Definition.

STAGE_5: ATTACHMENT FEATURE CREATION & ITS DRAFT ANALYSIS

STEP_1: DOG HOUSE CREATION

Dog house is an engineering feature used in plastic trim design. Dog houses are used as supporting feature. Sometimes other engineering features like snaps; locators etc. are mounded on them to increase their strength.

Dog houses are subjected to draft analysis to prevent breakage of the component during ejection from mould cavity. Dog house and other engineering components are built on B-surface.

Design Considerations are,

• Uniform wall thickness
• Corner Radius
• Draft Angle

Given:

Thus the following sketch becomes Positioned sketch and also Iso-constrained.

By using of Swept surface definition.

By using of Split definition.

By using of Thicksurface Definition.

By using of Draft Definition.

By using of Extrapolate definition.

By using of Split definition.

By using of Union trim Boolean Operation.

By using of Translate Definition thus the copy of another Dog House becomes moved along with Point to Point.

STEP_2: DRAFT ANALYSIS FOR DOG HOUSE

By using of Feature Draft Analysis Definition with the Draft angle of 0.5 deg along with the Side core Axis.

STAGE_6: DRAFT ANALYSIS FOR FINAL COMPONENT

By using of Feature Draft Analysis Definition with the Draft angle of 1.5 deg to be performed along with the Main Tooling axis.

VIEW ORIENTATIONS:

ISO VIEW

SIDE VIEW

SECTION VIEW

TREE STRUCTURE:

CONCLUSION:

Thus the Door Trim with the Dog house Component successfully created by using CATIA v5 from the given Class-A surface.

And the followings also,

Tooling axis for the given Class-A Surface and its Draft analysis to be completed.

B side Attachment Features in the component & its Draft analysis for both the Dog House along with Side Core Axis and the Final component completed.