Week 9 - Project 1 - Door Trim Lower with Engineering Features

Door Trim Lower with Engineering Features.

AIM: To create the Heat Stakes and the locators considering the design rules.

OBJECTIVES: The objective is to create the Door Trim Lower 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.

PROCEDURE:

1. CREATION OF TOOLING AXIS.

• First, the given styling surface was imported into CATIA and checked for irregularities by using Join, Boundary and Disassemble option.
• Then a tooling axis was created with the centre point generated on surface in the z-direction.

2. CLASS B Creation

• By offsetting the Class A surface at 2.5mm distance (Because component thickness is 3mm).
• Somewhere surface section are break by offset the surface
• where, sections are broke are reconstruct by using Extract, Untrim and Extrapolate features
• then Combine those section to the Offset surface.
• After the Class B surface as Created

EXTRAPOLATED CLASS B

3. CLASS C Creation

• From the Class A surfaces using Boundary command to all edges of the surface
• then sweep those section by define by reference surface with guiding of boundaries
• sweep at the angle of 90 degree at distance of 4mm
• after that join all Sweep section of the surface and considered as Class C surfaces.

4. Final Door Trim Creation.

• Join Class A and Class C surfaces
• Then Trim Class B and Join of (Class A and C surfaces).

CLASS A + CLASS C

FINAL TRIM ( CLASS(A+C) - CLASS B)

5. CREATION OF CLOSED BODY

• Go to the part design and close the feature.

6. Creation Of B Side Engineering Features :

LOCATOR:

1. First, draw 2d sketch for locator in required dimension.
2. Extrude the sketch by pad comment
3. Give draft to the part
4. Then chamfer and fillets to the part.
5. Translate tool is used to translate the copied parts in required position.
6. Union trim is used merge with the main body.

HEAT STAKES:

1. Heat steaks are as well as bosses.
2. Draw 2D sketch.
3. Extrude the sketch by pad comment.
4. Give draft to the part. Copied and pasted the required number of parts.
5. Translate tool is used to translate the copied parts in required position. Positions are given oi the question.
6. Finally, heat stacks are joined with main body by union trim comment.

7. DRAFT ANALYSIS

• For plastic parts, the nominal angle value for draft analysis is 3 degree but even a 0.5-degree angle can be created for sub-assemblies like ribs and slots. (For Sheet Metal 7 degree angle is the nominal value)
• Insert – Analysis – Feature Draft Analysis
• Draft analysis was carried out by pulling the compass to the tooling axis and an inverse draft axis was carried out if required.
• After setting the compass over the tooling axis the compass must be locked to a specific direction.

CONCLUSION:

A surface and locators and heat stacks are successfully created by creating standered guide lines and drafting angle is analysed by CATIA V5 software.