How can you create accurate and efficient CAD models using parametric modelling?

It is very important that the design incorporates all of the DIMENSIONS and CONSTRAINTS to fully define their model. Then they can control the dimensions (and associated tolerances). Without a fully defined shape the engineer is allowing the software to control the design and will lose control of the definition and precision.

Creating accurate and efficient CAD models using parametric modelling with CAD is a fantastic approach to ensure both precision and flexibility in your designs. Parametric modelling allows you to define geometric and dimensional relationships that can easily be edited later.

Always prepare sketches of 3D model by its functional point of view. Unnecessary constraints and dimensions will only headache during drawing creation.

Parametric modelling is for when you want to be able to modify a model by changing certain key parameter values. To create an accurate model, first think of what variables you want to change in the model and what variables you want to keep constant. Then, write out a list of dependent and independent parameters and make sure to get the order of the dependent ones correct. Then, input the parameters into your model under "equations" (for SolidWorks models) and start modeling and referencing the parameters as you go!

Creating accurate and efficient CAD models using parametric modeling involves several key steps and best practices. Before starting, understand the end goal of the model. This includes the functional requirements and any specific constraints the model must adhere to. Parametric modeling offers several significant benefits in the field of CAD, particularly in terms of efficiency, accuracy, and flexibility: One of the primary advantages of parametric modeling is the ease of making changes. Since the model's geometry is driven by parameters and relationships, modifying a dimension or parameter automatically updates the entire model. This is especially useful in the design phase, where changes are frequent.

One key element is Parameters: These are the foundational elements of parametric modeling. Parameters are numeric values that define the properties of a model, such as lengths, angles, diameters, and other geometric dimensions. They can be constants or variables and are often user-defined to control the size and shape of the model.

L'explication ci-dessus étant assez claire et complète, je n'ai pas grand chose à ajouter si ce n'est de ne pas perdre de vue ce que l'on veut faire du modèle. Jouer sur les paramètres de longueur, d'angles, etc peuvent parfois nous faire perdre certaines notions du réel. C'est important de garder un ordre de grandeur en tête pour notre modèle réel.

It's best to the product in and out before start of the project. The key element of parametric modeling is connecting the dots. Learning the relationship between various parameters can make your job easier. For example the variation of chamfer of a dowel pin with respect to its diameter.

Identify which characteristics are worth the effort to be parameterized. In case of doubt, do not do it. It can complicate your model unnecessarily.

Define Clear Objectives for your design Use Parameters and Constraints. Start with a Sketch. Build with Modularity in Mind. Leverage Features and Patterns. Establish Hierarchical Relationships for Simple and Complex Assembly. Optimize and Validate the Model. Document and Annotate. Iterate and Refine.

Can limit design process, in terms of thinking, and flow of thought. More useful for sales and production improvement where overall design is set. Ie overall diameter and height, maybe location of fittings and diameter. There will be a point when the variable you need is not given or you measure something differently to how it is defined. Annoying

Before diving into the modeling process, plan your design. Establish Strong Design Intent. Apply Constraints and Parameters. Keep the Feature Tree Organized and Simple. Document the Modeling Process

Le point important de ce paragraphe, c'est l'attention à porter aux unités ! Si votre formule vous permets de configurer un angle à partir d'une vitesse de rotation par exemple, attention à votre unité d'angle ! On passe par exemple de tour/minutes à des radians/s et l'angle en sortie sera en radians et non en degrés. Ce sont de petits détails qui influeront grandement la justesse de votre modèle ainsi que sa cohérence.

Creating accurate and efficient CAD models with parametric modeling involves defining geometric relationships and constraints. For example, in software like SolidWorks, you can use parametric features like equations. By linking dimensions with mathematical expressions, you maintain accuracy and efficiency. This ensures that modifying one parameter automatically updates related dimensions, streamlining the design process and maintaining precision.

Parametric modeling, while technical and structured, also has its share of interesting stories, examples, and insights that underscore its versatility and impact across various fields. The rise of parametric modeling has enabled unprecedented customization in consumer products. A notable example is in the footwear industry, where companies like Adidas and Nike use parametric design to create shoes that can be customized to an individual's foot shape and running style, offering enhanced performance and comfort.

A few more insights to consider to create accurate and efficient CAD models using parametric modeling 1) Clearly define the design intent before starting the model 2) Organize models in a hierarchical manner. This makes it easier to manage and update. 3) Test and validate the model using different scenarios to ensure it behaves as expected 4) Stay updated on software features. Stay informed about the latest updates in your CAD software to take advantage of new functionalities that can enhance your parametric modeling process.

Please, in addition to proper variable names and formulas, add comments to clarify their function. Remember, you are not the only one who can use that design. Teamwork....it is better to agree on common criteria.