Week 9 - Project - A pillar Design with Master Section

A-PILLAR DESIGN USING A MASTER SECTION AND DRAFT ANALYSIS

• OBJECTIVE:
• To do Draft analysis and Design A-Pillar with the engineering features with the help of the master section, Class-A, Class-B, Class-C, and Tooling axis.

1. TOOLING AXIS

• Firstly, we have to create a tooling axis which is essential for designing the component and also for draft analysis.
• To create the tooling axis, I'm choosing bisecting method.
• With the help of the direct method, I had to create a tooling axis that probably clears all the surface of class A.
• Now, let's check the draft analysis of class A and the component Door Trim with dog house (refer to the below-given pic).

• DRAFT ANALYSIS OF CLASS A SURFACE:
• Results: At 2.98 draft angle, the Class A surface clears well. (Refer to the below-given pic).

2. CLASS-B SURFACE:

• Class B surface is used for plastic molding purposes. For providing the product, a Class-B surface is used mostly.
• After creating the tooling axis next, I will make the Class B surface.
• Refer to the pic below, which shows the Class-B surface.
• For making a Class B surface, I will use the following command:

1. Boundary: Select the required boundary if required.
2. Extraction: In this, no boundary is required, so go to extract the flat surface of class A.
3. Untrim: After extraction, Untrim those surfaces.
4. Extrapolate: extrapolate those surfaces.
5. Trim: trim those extrapolated surfaces to get the desired surface.

3. CLASS-C SURFACE:

• Class C surface generally connects the Class-B surface to the Class A surface.
• Referring to the below pic, Class-C Surface is shown.
• To create a Class -C surface use the following command:

1. Boundary: pick the boundary for the next operation.
2. Swept: swept the selected boundary.
3. Extrapolate: surface can't join properly, so I used to extrapolate those surfaces.
4. Trim: trim those extrapolated surfaces and get the required surface.
5. Join: now join those surfaces with each other and form a single surface.

• A+C surface:

4. Final Operation to get A-Pillar:

• Firstly, Select the join operation and join the class A and class C surfaces.
• Trim those joined with the class B surface.
• After that, I got the final A-Pillar.
• As the surface is hollow from the inside, for this go to the part workbench and select the close surface.
• After that analyze the output surface with draft analysis.
• So, in this way, we got our final design as A-Pillar (Referring to the pic below).

• DRAFT ANALYSIS OF A-Pillar:
• Results: At 2.98 draft angle the surface of the A-pillar cleared well but some portions were not cleared. (Refer to the given pic below).

• DESIGNING OF ENGINEERING FEATURES:

• Dog House:

• Referring to the given master and designing the Dog house.

• Create the Dog House for the Door Trim considering the design rules mentioned in the video.

• Consider the thickness of the part to be 2.5 mm.

  "C" is where the doghouse contacts the backside of the surface.