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18.06.26
Lean Engineering: User-centred product development in mechanical engineering
The mechanical engineering sector is under constant pressure: markets are becoming more fragmented, customer expectations are rising, and development cycles are getting shorter. Many companies fail to resolve this dilemma using conventional approaches. They invest in more capacity, more tools and more processes. The result is often paradoxical: greater complexity coupled with the same or declining delivery reliability.
Lean Engineering offers a different approach. Not by adding more, but through intelligent simplification. The approach focuses on what really matters: what does the user actually need? Which development steps genuinely create value? Which work steps merely consume time and resources?
This article shows how Lean principles transform product development – and how d.u.h.Group supports you in this process.
What is Lean Engineering really?
Lean engineering is more than just a method. It is a mindset: eliminating waste, incorporating feedback, and learning continuously. In mechanical engineering, this means, in concrete terms:
Iterative development rather than monolithic phases. Small experimental steps replace lengthy planning and coordination rounds. Users are involved from the outset, not just at the end. Decisions are based on real data, not on assumptions.
Traditional projects often follow a linear process: gathering requirements, designing, validating, producing. Waste occurs at every stage: requirements change after they have been gathered; designs behave differently in reality; validation issues lead to rework.
Lean Engineering breaks this cycle. Short iterations with real customer feedback reduce uncertainty at an early stage. Prototyping and simulation help to validate design decisions more quickly. Rework is drastically reduced – because errors are identified early on, not after approval.
This not only saves time; it also significantly reduces costs and risks. A design error in the fifth iteration costs days. The same error after approval costs weeks or months.
User-centred design: The key advantage
Users understand their problem better than developers can guess. Lean Engineering places this insight at the heart of development.
In mechanical engineering, this could mean: plant engineers test early prototypes in their real-world environment. Not in a test facility, but on the actual production line. Maintenance technicians provide feedback on the accessibility of components. Design engineers can directly observe how their designs are used in practice.
This feedback is invaluable. It reveals what remains hidden during design reviews. Users operate machines differently to how developers intended. They encounter problems that nobody foresaw. They discover opportunities for simpler or more elegant solutions.
Companies that involve users at an early stage consistently report that time-to-market falls by 20–30 per cent. Customer complaints drop by 40 per cent or more. The return on investment in development increases because less rework and refinement are required.
The key lies in frequency and authenticity. Not one-off customer feedback sessions, but regular, direct interaction with the people who will be using the product.
How simulation technology accelerates lean engineering
Physical prototypes are expensive and time-consuming. Digital simulations make it possible to explore design variants in days rather than weeks.
Using CAE tools such as Simcenter, mechanical engineering teams can virtually validate stresses, fluid flows, thermal effects and more. A design with problematic stress is identified before material is ordered. A cooling strategy is tested without having to build an expensive test rig.
This not only speeds up development; it also makes iterations more cost-effective. Instead of testing one physical variant, you can test ten digitally. You select the best one and build it. The risk of making a mistake is significantly reduced.
In a lean environment, simulation becomes an everyday tool. Design engineers no longer go through two or three designs a year. They work with ten to fifteen simulated variants, select the best one and put it into production. The speed of iteration increases many-fold.
It is particularly valuable when simulation is combined with customer feedback: a user suggests a change. The team simulates it on the very same day. The next day, the user can test a new variant. This speed is possible – provided the tools and processes allow it.
Structured Development with Teamcenter: The Organisational Framework
Lean is challenging without a solid foundation. When data is scattered everywhere, when it is unclear which design version is current, and when changes are made independently by different departments – then Lean becomes a recipe for chaos.
Teamcenter brings order. The PLM platform serves as the repository for all product data. Who made which change, when and why? Which approvals are in place? Which versions are currently in use? Everyone sees the same, up-to-date view.
In a Lean environment, Teamcenter becomes the central hub. Engineers work on NX models. The platform tracks every change. Simulations are linked to the designs on which they are based. Design changes are automatically shown to the teams concerned. Traceability is integrated, not an afterthought.
This also allows smaller teams to work at Lean speed. Everyone knows where the truth lies. Parallel work becomes safe because conflicts are quickly identified and resolved. Change management does not become a burden, but rather a normal part of collaboration.
Particularly important: with Teamcenter, you can capture feedback in a structured way. Customer objections are documented, linked to design data and incorporated into design reviews. You won’t overlook any feedback, and you can later trace why a decision was made.
Practical implementation: from idea to process
Lean engineering is not a one-off project. It is a step-by-step transformation. Here are some tried-and-tested first steps:
Start small: Choose a product line or a component type. Apply Lean principles to a development project. You will quickly see whether the approach suits you.
Establish close customer interfaces. If you currently have three feedback cycles in a development year, Lean aims for ten or more. This requires new communication mechanisms – perhaps quarterly user tests, perhaps an embedded user representative in your project team.
Make active use of simulation. Whilst CAE is currently a validation tool, it is becoming a design exploration platform. This means that designers simulate early on, not at a late stage. They trial variants virtually, not physically.
Establish version control for all artefacts. With Teamcenter, you can store not only CAD versions but also test data, simulation results and customer feedback in a coherent manner. This ensures traceability and prevents confusion.
Measure progress. Time-to-market, quality metrics, rework rates: establish baselines for these metrics today. Compare them after six months. You will see that lean engineering is not only faster, but also more cost-effective.
Lean engineering doesn’t work on its own. Typical stumbling blocks:
Stakeholders fear a loss of control. When designers iterate quickly, managers, QA or sales often feel caught off guard. Solution: Clear governance. Define which types of decisions can be made quickly and which require consultation. Transparency in Teamcenter is a great help here.
Customers are not available to provide frequent feedback. Solution: It doesn’t have to be perfect. Initial tests with internal experts are often sufficient. Alternatively, you can closely involve a small number of key users who act as representatives.
Tools are not integrated. CAD, simulation and requirements management operate in silos. Solution: Invest in integration. Teamcenter and NX together form an ecosystem. Simulation results should be linked to designs, not stored in separate Excel files.
The corporate culture is accustomed to long-cycle development. Lean requires faster decision-making and greater tolerance for minor errors. Solution: Training and leading by example. If a project using Lean is visibly more successful, the rest will follow.
The good news is that these challenges are not technical. They are organisational. And organisations can learn and adapt – if the will is there.
Conclusion: Why Lean Engineering is the future of mechanical engineering
The pressure on mechanical engineering companies is very real and growing. Competitors from Asian markets are rapidly shortening development cycles. Customer requirements are more fragmented than ever. Payback periods are shrinking.
Companies that have mastered lean engineering have a clear advantage: they bring products to market faster. They are more attuned to genuine customer needs. They waste fewer resources on rework. And they learn from mistakes more quickly because cycles are shorter.
This is not a pipe dream. It is possible today. With the right tools – simulation, PLM, collaboration – and the right mindset.
d.u.h.Group supports you on this journey. We bring lean expertise from over ten industries. We implement the tools – NX for design, Simcenter for validation, Teamcenter for structure – not as isolated tools, but as an integrated system for agile product development.
Please feel free to contact us for a personal consultation. We’ll show you how Lean Engineering can shorten your development times and improve your delivery reliability.
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