Five Key Principles to Get Started With Design for Manufacturing
DFM reduces manufacturing complexity, leading to lower costs and higher quality
Material choice is essential to meet the required properties of the final part. When selecting materials, factors such as heat resistance, water resistance, strength, and flexibility must be considered.
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Once the manufacturing process is locked, the design phase is next. It involves accounting for factors like wall thickness, surface details, and transitions based on the selected manufacturing process. Simplicity is preferred in DFM because complex geometries can increase the risk of production failure and costs.
Maximizing the benefits of DFM depends on a thorough understanding of the manufacturing process used. For example, DFM for sheet metal might require considering bends, fillet locations, and spacing, whereas DFM for 3D printing might involve a closer examination of mechanical properties like strength and flexibility.
Manufacturing companies, including online platforms, are introducing detailed DFM software to help engineers. For instance, Hubs’ DFM tool highlights potential issues such as inconsistencies in wall thickness, sharp internal corners, and tricky-to-remove volume in CNC manufacturing. Similarly, it addresses mesh integrity and support-structure-related errors in 3D printing. Earlier this year, Protolabs rolled out its DFM tool that provides a detailed manufacturing analysis along with actionable recommendations to address the issues.
DFM eliminates guesswork from your processes and instead focuses on manufacturing simplicity right from the get-go. With this approach, designers and engineers work together to create, refine, and simplify components prior to production, leading to considerable time and cost savings.
DFM starts with choosing the correct manufacturing method. For instance, high-volume batches might require injection molding, while 3D printing would be best suited for low-volume, detailed parts. This stage also considers the properties of the parts or tools to be created.
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An increasing number of engineers are embracing design for manufacturing (DFM) to streamline their production workflow. Industry leaders such as Apple, GE, and Samsung have already adopted DFM as part of their standard practices. If you’re using the “over the wall” engineering strategy—one where the design team completes their work and then tosses it to the manufacturing team to figure out production details—it might be a good time to revise your production process.
If you’re looking to weave DFM into your process, here are five key principles that will help get you started.
Other factors that influence DFM include the availability of materials and components, design reusability, and aesthetics. The DFM process can help guide your decisions in these areas and yield benefits such as reduced costs, shorter lead times, and improved part quality.
Industrial regulations apply in many cases, depending on how the part will be used. As such, materials for food industry parts should be nonabsorbent and nontoxic, whereas aviation parts require lightweight yet durable materials.
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