CAD & Manufacturing TutorialsHow to Create Parametric Models in SolidWorks – A DesignWithAjay Workflow

At Ajay Industries, parametric modeling isn’t just a feature—it’s a philosophy. Whether you’re designing shredder components, gear housings, or 3D-printed fixtures, parametric models allow you to adapt, scale, and iterate without starting from scratch. This tutorial walks you through our proven workflow for creating parametric models in SolidWorks, ensuring your designs are flexible, production-ready, and easy to maintain.

What Is Parametric Modeling?

Parametric modeling uses dimensions, constraints, and equations to control geometry. Instead of manually editing each feature, you define relationships that automatically update when inputs change.

Benefits include:

• Faster design iterations
• Consistent geometry across variants
• BOM-ready accuracy
• Scalable for manufacturing and customization

DesignWithAjay’s Parametric Workflow in SolidWorks

1. Start with a Purpose-Driven Sketch

• Use centerlines and symmetry to reduce redundancy
• Apply geometric constraints (e.g., horizontal, perpendicular)
• Dimension key features with intent (e.g., blade spacing, shaft diameter)

Tip: Use construction geometry to guide layout without affecting the final model.

2. Define Global Variables

Go to Tools > Equations > Manage Equations Create variables like:

Create variables like:

Blade_Spacing = 25
Shaft_Diameter = 40
Housing_Thickness = 5

These variables control multiple features and make your model instantly scalable.

3. Link Dimensions to Variables

Instead of typing fixed values, use:

= “Blade_Spacing”

SolidWorks will automatically update all linked features when the variable changes.

4. Use Equations for Smart Relationships

Example:

Housing_Width = Shaft_Diameter * 2 + 20

This ensures your housing always adapts to shaft size.

Tip: Use conditional equations for design variants (e.g., if blade count > 30, increase motor mount size).

5. Build Assemblies with Mate References

• Predefine mate references in parts like bearings and couplings
• Use Top-Down Design to control child components from the main assembly
• Apply In-Context Features for adaptive geometry

Real-World Example: Parametric Shredder Frame

Design Goal: Scalable twin-shaft shredder frame Variables Used:

• Shaft_Distance
• Blade_Count
• Frame_Height Outcome: One model supports 3 product variants with zero manual edits

What You Get with Every DesignWithAjay CAD File

• Fully parametric SolidWorks models (.SLDPRT, .SLDASM)
• Global variable sheets and equations
• BOM-ready drawings with linked dimensions
• Exploded views and revision history
• STL and STEP exports for prototyping