Mechanical Tips

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical

If you were watching the Bricsys® Digital Summit in October 2020, you might have noticed that the Mechanical team presented the latest developments for BricsCAD® Mechanical V21 with the aid of a detailed assembly -- "The Brewery". The parametric model consisted of over 3,000 parts (of which 500 are unique) and included more than 1,000 constraints, the majority of which were added automatically by BricsCAD. Despite this level of complexity, the model still runs flawlessly.

Unfortunately, there simply wasn't enough time during the presentation to showcase the incredible complexity and level of detail added to the model by the team. Fortunately, the Bricsys Blog has the opportunity to take the model apart and have an in-depth look at the brewery in all its glory.

The Assembly

The Brewery showcased BricsCAD Mechanical at its finest, from a fully animated bottle filling assembly, to an elaborate, parametric system of pipes, all created using BricsCAD!

This year's design was inspired by the maltese cross mechanism (geneva drive), which converts continuous rotary movement into intermittent rotation. The mechanism was used in The Brewery to push the bottles onto the belt at uniform intervals.

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical- geneva drive

Geneva drive or maltese cross mechanism in action.

The assembly truly demonstrated how BricsCAD Mechanical provides, not only 2D modeling but also 3D modeling capabilities, and fully showcased BricsCAD Mechanical's parametric and constraint capabilities. The assembly was used by the quality assurance team to ensure that BricsCAD Mechanical V21 was ready for you, our BricsCAD users.

Parametrics and constraints

The Brewery really makes the most of BricsCAD Mechanical's parametric modeling capabilities and demonstrates just how easy it is to create a model with parametrically variable, equipment configurations.

In the Brewery, you accommodate different bottle sizes in the assembly and parametrically change the distance between the nozzles, the forks on the bottle spacer assembly, the rails on the conveyer belt, the rotary platform, and even the frame assembly.

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical- diameter

You can also change the number of nozzles and the number of forks on the bottle spacer assembly, again by altering just one parameter.

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical- nosel fork

Another cool feature in The Brewery that it demonstrates how it is possible, in BricsCAD, to create limits for parameter values. There are 2 parameters that limit the movement of the nozzle valve before it opens and ensure that the bottle spacer stops at the right point.

There are also parameters in the model that can be used to animate the chain, rotate the rotary platform and drive other moving parts!

Arrays

The arrays used in the cap duct and cap rotation drum assemblies were created along a path, whilst the chain array was created on a closed polyline. To move the arrayed elements along the path, you need only to change the offset parameter.

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical- array

Creation of models from structural elements

Meanwhile, the frame demonstrates the possibility for users to create models from structural elements.

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical- frame

Parametric parts

Standard parts are used to connect the various parts of the brewery together. There are over 100 parametric parts available for use in BricsCAD Mechanical. Because The Brewery was created using standard parametric parts, the whole of the piping system can be edited dynamically with the manipulator.

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical- pipes

Sheet metal

And of course, I don't need to remind you that the control box was created live during the presentation by converting a solid into sheet metal in less than 3½ minutes, which included automatic junction creation!

Pushing the Limits of Parametric Modeling with BricsCAD® Mechanical- sheet metal


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Bricsys, part of Hexagon, is the global technology company that creates the BricsCAD® family of computer aided design products and the Bricsys 24/7 project collaboration platform.

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