Drawings in SolidWorks
In SolidWorks, a Drawing is a 2D representation of a 3D model (part or assembly) used to communicate design intent, manufacturing details, and dimensions. Drawings are created from 3D CAD models and include standard views such as front, top, side, isometric, and section views. SolidWorks drawings provide detailed annotations, GD&T (Geometric Dimensioning and Tolerancing), material specifications, and bill of materials (BOM) for assemblies.
Key features of Drawing in SolidWorks:
- Generate 2D drawings directly from 3D models.
- Create multiple views (orthographic, isometric, detailed, section).
- Add dimensions, tolerances, and annotations.
- Insert tables like BOM, hole tables, and revision tables.
- Update drawings automatically when the 3D model changes.
- Export in industry-standard formats like PDF, DXF, and DWG for manufacturing.
3D Drawing (3D Modeling) in SolidWorks
A 3D model is the digital representation of a part or assembly in three dimensions (length, width, height).
- File Type: .SLDPRT for parts, .SLDASM for assemblies.
- Tools Used:
- Sketching (2D sketches as a base)
- Features like Extrude, Revolve, Loft, Sweep
- Fillet, Chamfer, Shell, Pattern, etc.
- Applications:
- Used for product design, prototyping, simulation, and manufacturing.
- Can be directly exported to CAM software for machining or 3D printing.
Benefits of 3D Modeling
- 3D visualization of product before manufacturing.
- Detect interferences in assemblies using Interference Detection.
- Perform motion studies and stress analysis (FEA).
2D Drawing in SolidWorks
A 2D drawing is a detailed engineering drawing generated from the 3D model. It contains dimensions, tolerances, and annotations for manufacturing.
Key Points:
- File Type: .SLDDRW
- Created From: 3D models (Parts or Assemblies).
- Views Included:
- Front, Top, Side views
- Isometric view
- Section views
- Detail views
- Annotations:
- Dimensions (linear, angular, radial)
- Tolerances (GD&T)
- Surface finishes
- Weld symbols
- Notes and material specifications
Dimensions & Annotations:
- Add linear, radial, and angular dimensions.
- Include tolerances, surface finishes, weld symbols, and notes.
Bill of Materials (BOM):
For assemblies, BOM tables are generated automatically.
Comparison of 3D Model vs 2D Drawing
| Feature | 3D Model | 2D Drawing |
|---|---|---|
| Purpose | Design, simulation, visualization | Documentation for manufacturing |
| File Types | .SLDPRT, .SLDASM | .SLDDRW |
| Content | Solid models with geometry and motion | Views, dimensions, BOM, notes |
| Usage | Prototyping, analysis, CNC, 3D printing | Shop floor, fabrication, assembly |
| View | 3D interactive model | 2D paper/print layout |
| Feature | 3D Model | 2D Drawing |
| Purpose | Design, simulation, visualization | Documentation for manufacturing |
| File Types | .SLDPRT, .SLDASM | .SLDDRW |
| Content | Solid models with geometry and motion | Views, dimensions, BOM, notes |
| Usage | Prototyping, analysis, CNC, 3D printing | Shop floor, fabrication, assembly |
| View | 3D interactive model | 2D paper/print layout |
Workflow in SolidWorks
- Create 3D Model → Using Sketch + Features in Part Mode.
- Assemble Parts → In Assembly Mode.
- Generate 2D Drawings → From 3D models using Drawing Mode.