Week 9 - Project - A pillar Design with Master Section

Project - A pillar Design with Master Section

NOTE: THE CHALLENGE IS WORKED ON CATIA 2021 BUT DURING THE COMPLETION CATIA HAD SOME ERRORS AND STOPPED WORKING(LICENSE ISSUES), FOR ME THOUGH IT'S WORKED ON 2021, WON'T OPEN ON ANYTHING OTHER THAN CATIA 2021 VERSION TO REWORK, SO PLEASE CONSIDER THE LIMITATIONS THAT I'M FACED

Aim :

To create the 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.

Objective :

Create the required Tooling axis by using master section and bisecting method.
Design the Class-B and Class-C surfaces and close all three surfaces.
Design the Dog house and its internal parts as given Drafts and master section sketch.
Draft analysis for the final solid part and side core Draft analysis.

1] Master Section

• Master sections are the guides for design requirements that decide the component packaging after technical (Styling, Concept, or Class-A) surfaces. Creating this master section should need 5 to 6 years of experience.
• This helps you to decide the feasibility, clearance, packaging, and fixation strategy before working it on a 3D. We have a master section.

2] DRAFT ANALYSIS

• For molded or cast parts, the draft angle is the amount of taper perpendicular to the parting line. It is measurable in degrees. Because plastic shrinks and sticks on molding surfaces as it cools, we draft the walls of the plastic part so that it ejects or breaks free from the molding surfaces more easily and without dragging. To reduce the risk of damage to the parts and ensure ejection, a functional injection molding part must have drafts on both the cavity and core sides.

Nominal values for Draft angles

• 3 Degrees is a nominal draft angle.
• 5 Degrees can also be manufactured. Increasing the manufacturing cost.
• 7 Degrees is considered for Textured surface parts.

Importance of Draft in injection molding

• Reduces the possibility of part damage due to friction during the release.
• Reduces mold wear and tear.
• Ensures a uniform, smooth, unscratched finish.
• Ensures the integrity and uniformity of other surface finishes and textures.
• Reduces overall cooling time by reducing or eliminating the need for unusual ejection setups.

Steps followed for Draft Analysis

• The created part must be changed to the material mode in the display frame.
• Compass is enabled and placed in the direction of the Tooling Axis.
• The lock command is then used to fix the compass along the tooling axis.
• Color codes are classified and Draft angle is applied.
• Running point analysis is used to display permissible draft angle.

3] TOOLING AXIS

In injection molding, the Class A surface is first analyzed to determine the axis or tooling direction that separates the molds. Tooling direction is critical for plastic product design because it determines mold direction.

4]TOOLING AXIS CREATION

• The tooling axis here created is by selecting one of the natural axes as it clears the draft.
• Here, the tooling axis is created by extracting one of the surfaces for creating a point and a new axis is created at that point.
• So, a flat face is extracted and created a point at its center. Axis is also created at that point.
• Now, the line is created using line tool and giving the line type as point-direction and selecting the point and direction for creating the tooling axis and tooling axis is created along x directions.

Then the class A B C are created then Dog house is made on the solid surface and draft analysis each part separately