3D Product CAD Software and Tools 2 — Questions and Answers
Question 1: What is 'parametric constraint' in CAD sketches?
- A rule (dimension or geometric relation) that fixes the size or position of sketch elements (Correct answer)
- A limit on the number of features allowed in a model
- A rendering quality setting
- A file size restriction for cloud storage
Correct answer: A rule (dimension or geometric relation) that fixes the size or position of sketch elements
Parametric constraints define relationships between sketch entities — such as equal length, parallelism, or specific dimensions — ensuring the sketch behaves predictably when values change.
Question 2: What is a 'configuration' in SolidWorks and how is it used in product design?
- A variant of a part or assembly with different dimensions or features stored within a single file (Correct answer)
- A rendering preset for different lighting setups
- A saved camera view for design reviews
- A material library preset
Correct answer: A variant of a part or assembly with different dimensions or features stored within a single file
Configurations let designers store multiple size variants (S, M, L), color options, or feature variations within one file, driving the design table or design variants.
Question 3: What is a 'design table' in parametric CAD software?
- A spreadsheet embedded in the CAD file that drives multiple configurations by defining dimension values (Correct answer)
- A furniture design module
- A comparison table of material properties
- An assembly bill of materials
Correct answer: A spreadsheet embedded in the CAD file that drives multiple configurations by defining dimension values
A design table (typically an Excel spreadsheet) defines values for dimensions and features across multiple configurations, enabling rapid management of product variants.
Question 4: What is 'top-down design' in CAD assembly modeling?
- Designing parts within the context of the assembly so components reference each other's geometry (Correct answer)
- Starting with the highest-level components before adding detail
- A design process beginning with market research
- Modeling from the top surface of a product downward
Correct answer: Designing parts within the context of the assembly so components reference each other's geometry
Top-down assembly design creates part geometry by referencing other components in the assembly context, ensuring interfaces, fits, and alignments are captured by design.
Question 5: What is the purpose of a 'drawing' document in SolidWorks or similar CAD software?
- To create 2D orthographic projections with dimensions and GD&T for manufacturing communication (Correct answer)
- To create a 3D rendered image of the model
- To export the model to STL for printing
- To write assembly instructions in text
Correct answer: To create 2D orthographic projections with dimensions and GD&T for manufacturing communication
A CAD drawing document generates annotated 2D views (front, side, section, detail) from the 3D model, serving as the official engineering communication to manufacturers.
Question 6: What is 'PDM' (Product Data Management) software used for in professional product design teams?
- Managing CAD file versions, access control, and revision history across a design team (Correct answer)
- Generating product marketing data
- Running FEA simulations on large assemblies
- Managing supplier invoices
Correct answer: Managing CAD file versions, access control, and revision history across a design team
PDM systems like SolidWorks PDM control who can check out and modify files, track revision history, and ensure team members always work from the latest approved design.
3D Product CAD Software and Tools 2
What is 'parametric constraint' in CAD sketches?