Challenge

Week 10 - Challenge 3 - Door Trim Lower with Engineering Features

MMareeswaran S10 Sept 2023

DOOR TRIM LOWER WITH HEAT STAKES AND THE LOCATOR:

AIM:

To create the door trim lower solid component through given class A surface and then consider the design rule to create heat stakes and locators in the door trim solid part.

Procedure:

Create the tooling axis and then check the draft analysis
Create a class B & C surface through the Class A surface
Create the solid component and check it is draft analysis.
Create heat stackes and locators considering the design rule.

Tooling axis:

A tooling axis is created on the mold in the direction of openinig and closing the mold and cavity.

I select the center surface and extract the surface and then create point on the surface. Next i created a line through the point using the point and direction line command.

Draft analysis on class A surface:

Class A surface is checked with the help of draft analysis and Tolling axis.

Given a surface angle of minimum 3 degerees, the whole component truns green. If the component truns green, Go to next operation.

Class B surface:

The Class-B surface is the secondary surface in the plastic component. Class B-Surface is extracted from the A-surface and it is offseted at 2mm in downward direction.

Some parts were missing from the created class b surface so i used extract ,extrapolate and multi sections surface commands to fix that.

finally created a Class B surace and then used the boundary command to check for any irreguler surface or gap, if there no defect, go to the next step.

Class C surface:

To create a Class-A outer boundary with the boundary command, Then Create a Class-C surface using the sweep command over the boundary.

The Class-C surface is created by giving a minimum draft angle of 3mm in the sweep command.

Now, let's combine both the Class-A and the sweep surface to get a complete Class-C surface.

Trimmed surface:

Check that the Class-B surface intersects the Class-C surface correctly.

A trimmed surface is created using the Trim command in Class-C and Class-B surface.

Solid Part;

To check the trim surface created using the boundary command, if it does not get the boundary, got a closed surface.

A solid part is created using the closed surface command on a trimmed surface.

Creating Locators:

First i created two points on the created solid part, then i created a sketch inn that solid part centered on that point using position sketch.

Then i used the sketch with help of pad command and i pad it 20mm height, made it 1mm thick and drew 0.5 degrees in the direction of the tooling axis.

I gave a 3mm chamfer with a 45 degree incline and then a 0.5mm radius fillet.

Creating Heat stakes:

To create the heat stakes, I draw a sketch on the surface. After the creation of the sketch, I pad it to 15mm height and I gave a draft angle of 0.5deg on both sides (inside and outside) and then I gave a fillet with a 0.25mm radius.