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Profound Machinery Benefits Of A Multi-disciplinary Design

Profound Machinery Benefits Of A Multi-disciplinary Design

Profound Machinery Benefits Of A Multi-disciplinary Design

All engineering disciplines need to work in close collaboration to ensure a design is completed on time and manufactured and commissioned cost-effectively. Article by Alex Teo, Siemens Digital Industries.

In manufacturing, building a machine is a complicated process. Historically, the focus was on the mechanical CAD, and the functioning mechanical arrangement and assembly. Today’s sophisticated machines are still mechanical marvels, but over the last two decades, electrical power is now a part of motors, rotary equipment, and camshaft gears. Moreover, all are driven by advanced computing via the software, controlled by PLCs and CNCs. Gone are the days of addressing the mechanical design in one space and the electrical design and schematics in another. The software must be part of the equation in providing optimum design.

A multi-disciplinary design approach

Now more than ever, all the engineering disciplines need to work closely together to ensure the design is completed on time and cost-effectively manufactured and commissioned. That’s why machine manufacturers are leveraging a multi-disciplinary design approach, spurring manufacturing to greater efficiency. Multi-disciplinary design is assessing the complexities of machine building, including engineering design and manufacturing. 

For decades the machine manufacturer’s number one focus was on CAD and manufacturing parts within tolerance for everything to function mechanically. The machine was primarily a mechanical piece of equipment, such as yesterday’s automobiles or airplanes.  Therefore, the mechanical design resided in one area, with the electrical design, schematics, and software development in silos.

However, this dynamic is ever-changing with motors and equipment transitioning to gears driven by software and PLC codes, thus accelerating the desire for performance-based programs. The software must be adaptable to conditions on the floor with the machine reacting to real-time sensor readings. Simplistic processes, like a cylinder, extending and retracting, can be based on the pressure differential and flow regulation—technologies unavailable in the past to small and medium-sized businesses due to cost. This scenario increases mechanical capabilities and features with software – a game-changer for machine designers.

The multi-disciplinary design blends all the capabilities and skillsets needed for advanced machine engineering into a collaborative environment. It pays dividends for the output quality of the machine design with everything working together in its place. It is a type of art form as opposed to merely bolting on electrical, sensors, and cable runs. It is more than that—it is an integrated solution. This dynamic creates harmony in the multi-disciplinary design when each discipline has separate areas.

All engineering disciplines need to work in close collaboration to ensure a design is completed on time and manufactured and commissioned cost-effectively.

A new approach to machining

Manufacturers can no longer follow the established method: “we used to design it – build it and then see if it actually worked by testing it.” Now machinery companies have aggressively compressed timelines to get their more sophisticated machinery to market. That is why there is a substantial increase around embedding simulation into the design process, and incorporating multi-discipline domain, finite element analysis, computational fluid dynamics, vibration, and harshness. 

Machine builders are also relying on a comprehensive digital twin. The digital twin holistically is a representation of the physical machine, its performance, and the recipe for manufacturing it. So, it corresponds to everything that constitutes the machine:  mechanical, electrical, hydraulic, fluid, pneumatics, design domains, performance, simulation, and automation code. Moreover, the digital twin encompasses manufacturing and service life, basically taking the machine from the point of origination through to the end of life, when it gets recycled.

There is a blurring of lines between mechanical, electrical, and software, so there cannot only be a digital twin of the mechanical, without representing all the other domains as well. A comprehensive digital twin is imperative because of the emphasis on machinery driven by the software and electrical. Therefore, these domains must be included in the digital twin to help and assist in creating and maintaining the most comprehensive digital twin.

Furthermore, design exploration is more profitable when simulating the entire digital machine for displaying performance in the virtual world. Therefore, items like Mechatronics Concept Designer, which is a digital industry software with specific capabilities around kinematics to define PLC code, use these capabilities to portray a virtual twin. Realistically, this entails the same work traditionally completed as a team, now achieved in a synchronised, collaborative manner but with the enhanced capability which allows designers to find failures quickly. 

Manufacturing companies are attaining improved levels of optimization within the mechanical system by performing kinematics with the electrical and software teams before the physical product or prototype even exists. This setting allows for uncovering the limitations of the desired mechanism and building that knowledge into the mechanical behavior—a compelling paradigm shift in machine design.

By taking advantage of collaboration parts of the mechanical system that have reached a level of maturity can be opened and exposed to the electrical and software teams for performing kinematics upfront in 90-degree motion. For example, already knowing the limits of a mechanism’s function, affords the ability to build that knowledge into mechanical behavior for use during the simulation. Since the teams are mindful of the behavioral action from the mechanical, they can incorporate that knowledge into the PLC software.

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