Inventor Plastic Part Design: Creating Injection-Moulded Components
Getting this right can significantly improve both the quality of your output and the efficiency of your workflow. This guide covers the practical details you need, structured so you can follow along step by step or jump to the specific section that addresses your current question.
Design Considerations for Injection Moulding
Assembly constraints in Inventor define the physical relationships between parts. Mate constraints bring faces together, insert constraints align cylindrical features, and motion constraints define mechanical linkages. A well-constrained assembly accurately represents how the real mechanism moves.
The stress analysis tools in Inventor provide a first-pass assessment of structural performance without leaving the CAD environment. While they do not replace dedicated finite element analysis software for critical applications, they catch obvious problems early in the design process.
Inventor’s part modelling workflow follows a sketch-feature-assembly pattern that mechanical engineers find intuitive. Sketches define 2D profiles, features extrude, revolve, or sweep those profiles into 3D geometry, and assemblies bring parts together with constraints that define how they relate spatially.
Drawing production in Inventor is closely integrated with the 3D model. Drawing views are associative — they update automatically when the model changes. This eliminates the traditional problem of drawings that do not match the current design, provided you maintain the model-drawing link.
Adding Draft Angles to All Faces
Inventor’s part modelling workflow follows a sketch-feature-assembly pattern that mechanical engineers find intuitive. Sketches define 2D profiles, features extrude, revolve, or sweep those profiles into 3D geometry, and assemblies bring parts together with constraints that define how they relate spatially.
Assembly constraints in Inventor define the physical relationships between parts. Mate constraints bring faces together, insert constraints align cylindrical features, and motion constraints define mechanical linkages. A well-constrained assembly accurately represents how the real mechanism moves.
- Frame Generator: Automates the creation of structural frameworks from sketched wireframes using standard section profiles
- Content Centre: A library of standard parts (bolts, bearings, structural sections) that can be inserted directly into assemblies
- iLogic: Rule-based automation that responds to parameter changes with predefined design logic
- Sheet metal environment: Specialised tools for creating sheet metal parts with bends, flanges, and automatic flat pattern generation
If you are looking for a cost-effective way to get started, Autodesk Inventor Professional 2023/2024/2025/2026 for Windows is available for CA$69.99/year from GetRenewedTech. This provides a legitimate licence at a fraction of the typical retail price, making it accessible for individuals and small businesses.
Designing Ribs and Bosses for Structural Support
Drawing production in Inventor is closely integrated with the 3D model. Drawing views are associative — they update automatically when the model changes. This eliminates the traditional problem of drawings that do not match the current design, provided you maintain the model-drawing link.
iLogic rules automate repetitive design tasks by responding to parameter changes with predefined logic. When a user changes one dimension, iLogic can automatically adjust related dimensions, suppress or unsuppress features, and update material specifications. This is particularly valuable for configurable products.
Drawing production in Inventor is closely integrated with the 3D model. Drawing views are associative — they update automatically when the model changes. This eliminates the traditional problem of drawings that do not match the current design, provided you maintain the model-drawing link.
The stress analysis tools in Inventor provide a first-pass assessment of structural performance without leaving the CAD environment. While they do not replace dedicated finite element analysis software for critical applications, they catch obvious problems early in the design process.
Creating Snap Fits and Clip Features
Inventor’s interoperability with AutoCAD is seamless for most workflows. DWG files can be imported as sketches, and Inventor drawings can be exported to DWG format for collaborators who use AutoCAD rather than Inventor.
The stress analysis tools in Inventor provide a first-pass assessment of structural performance without leaving the CAD environment. While they do not replace dedicated finite element analysis software for critical applications, they catch obvious problems early in the design process.
The Content Centre in Inventor provides a library of standard parts — bolts, nuts, washers, bearings, and structural sections — that you can insert directly into your assemblies. Using standard parts from the Content Centre rather than modelling them from scratch saves time and ensures dimensional accuracy.
The stress analysis tools in Inventor provide a first-pass assessment of structural performance without leaving the CAD environment. While they do not replace dedicated finite element analysis software for critical applications, they catch obvious problems early in the design process.
- Frame Generator: Automates the creation of structural frameworks from sketched wireframes using standard section profiles
- Stress analysis: Built-in finite element analysis for quick structural verification without leaving the CAD environment
- iLogic: Rule-based automation that responds to parameter changes with predefined design logic
- Content Centre: A library of standard parts (bolts, bearings, structural sections) that can be inserted directly into assemblies
If you are looking for a cost-effective way to get started, Autodesk Inventor Professional 2023/2024/2025/2026 for Windows is available for CA$69.99/year from GetRenewedTech. This provides a legitimate licence at a fraction of the typical retail price, making it accessible for individuals and small businesses.
Wall Thickness Analysis for Mouldability
Inventor’s part modelling workflow follows a sketch-feature-assembly pattern that mechanical engineers find intuitive. Sketches define 2D profiles, features extrude, revolve, or sweep those profiles into 3D geometry, and assemblies bring parts together with constraints that define how they relate spatially.
The Content Centre in Inventor provides a library of standard parts — bolts, nuts, washers, bearings, and structural sections — that you can insert directly into your assemblies. Using standard parts from the Content Centre rather than modelling them from scratch saves time and ensures dimensional accuracy.
Simulating Mould Fill with Inventor
The stress analysis tools in Inventor provide a first-pass assessment of structural performance without leaving the CAD environment. While they do not replace dedicated finite element analysis software for critical applications, they catch obvious problems early in the design process.
Sheet metal design in Inventor uses a specialised environment where bends, flanges, and punched features are defined parametrically. The flat pattern — the unfolded shape that will be cut from sheet stock — is generated automatically and updates when you modify the folded design.
Inventor’s part modelling workflow follows a sketch-feature-assembly pattern that mechanical engineers find intuitive. Sketches define 2D profiles, features extrude, revolve, or sweep those profiles into 3D geometry, and assemblies bring parts together with constraints that define how they relate spatially.
Sheet metal design in Inventor uses a specialised environment where bends, flanges, and punched features are defined parametrically. The flat pattern — the unfolded shape that will be cut from sheet stock — is generated automatically and updates when you modify the folded design.
Conclusion
The practical value of getting this right extends beyond the immediate task. A well-executed approach here improves the quality of everything that depends on it downstream — from the documents you produce to the efficiency of your daily workflow. Start with the basics described in this guide and build from there. For an affordable way to access the software discussed in this article, Autodesk Inventor Professional 2023/2024/2025/2026 for Windows is available for CA$69.99/year from GetRenewedTech.
