CAD Specialist Mechanical Design and Engineering Flashcards

What is the purpose of a 'revision block' on an engineering drawing?

Answer: Tracking changes made to the drawing after initial release, including revision letter, description, and date

A revision block records the history of changes to a drawing after its initial release, tracking each revision with a letter, description, date, and approver.

What does 'FEA' stand for in mechanical CAD simulation?

Answer: Finite Element Analysis

FEA (Finite Element Analysis) is a computational method that divides a model into small elements to simulate stress, strain, thermal, and other physical behaviors.

In mechanical CAD, what is a 'loft' feature?

Answer: A feature that blends between two or more profiles at different locations to create a complex shape

A loft creates a smooth transition between two or more cross-sectional profiles at different locations, producing complex organic or aerodynamic shapes.

What is 'sheet metal flat pattern' used for in CAD?

Answer: Generating a 2D drawing of a formed sheet metal part as if unfolded flat for cutting

A sheet metal flat pattern unfolds a formed sheet metal part into its flat blank shape, which is used for CNC laser or punch cutting before bending.

In mechanical design, what is the purpose of a 'counterbore' hole?

Answer: A hole that widens at the top to allow a flat-headed screw to sit flush or below the surface

A counterbore is a cylindrical flat-bottomed enlargement at the top of a hole, allowing a socket head cap screw or bolt head to sit flush or below the part surface.

What is the role of ANSI/ASME Y14.5 in mechanical CAD and drafting?

Answer: It is the US standard governing GD&T symbols, rules, and application on engineering drawings

ANSI/ASME Y14.5 is the US national standard that defines all rules, symbols, and interpretation guidelines for Geometric Dimensioning and Tolerancing on engineering drawings.