In Computer Aided Design (CAD), efficiency and flexibility are essential to meet the demands of modern projects. However, traditional approaches based on a rigid construction history sometimes slow designers down. This is where synchronous technology comes into its own.
How synchronous technology improve cad productivity
What is synchronous technology?
Synchronous technology lets you model elements in CAD and manipulate them directly using 3D geometries, without being constrained by a chronological construction tree. Unlike traditional methods, where each modification follows a precise sequence of operations, synchronous technology offers total flexibility.
For a better understanding, let's distinguish two key concepts:
- Synchronous technology: This is the overall concept that encompasses tools integrated into the software to work efficiently on 3D models, and which enable synchronous modeling to function.
- Synchronous modeling: A specific method for making direct changes to models, without relying on a history.
Why is construction history sometimes a limiting factor ?
In traditional parametric modelling, each stage of the design is recorded in a construction tree. This means that to modify any part of the model, it is often necessary to go back to the stage concerned and recalculate all the subsequent operations. This can be a long and complex process, especially for models with many stages.
Example: If you want to move a hole in a piece, you may have to :
- Find the step where the hole was created in your design tree.
- Select and modify this step.
- Recalculate the following steps to ensure that the model remains consistent.
→ With synchronous technology, these constraints disappear.
The principles of synchronous technology
Synchronous technology is based on three key principles:
1. Direct modification
Designers can click directly on a face, edge or geometry to modify it. This intuitive manipulation is akin to 'manual' interaction with the model.
Result: considerable time savings for simple adjustments such as moving, resizing or deleting an entity.
2. Maintaining geometric relationships
When a modification is made, the software automatically detects the geometric relationships (alignment, symmetry, tangency, etc.) and maintains them to guarantee model consistency.
- Example: If two holes are aligned, moving one automatically moves the other.
3. Compatibility with other systems
Synchronous technology allows you to work on models imported from other CAD software, even if they don't have history. This promotes interoperability and avoids the need to recreate geometry.
→ So you do not have to choose between history-based modelling or direct modelling, the two approaches are combined here.
Synchronous technology in practice: a case study
Let's say you're working on a 3D model of a mechanical part with lots of holes, ribs and cut-outs.
- Traditional situation: You want to widen a rib and move a hole. You have to find the corresponding operations in the construction tree and adjust each step. If the model is complex, this can lead to errors or lengthy recalculations.
- With synchronous technology:
- Select the rib directly to widen it.
- You can move the hole with a single click, while retaining any alignment or geometric constraints.
- The software instantly adjusts the model without having to recalculate all the operations.
Result → You save time, reduce the risk of errors and work much more smoothly.
Benefits for designers
Synchronous technology offers a number of tangible benefits for CAD software users:
-
Flexibility
Modifications are simple and intuitive, even for complex geometries. -
Time saving
Eliminating dependency on history means you can make changes more quickly. -
Interoperability
You can work on models from other programs without difficulty. -
Simplified revisions
Real-time adjustments facilitate iterations with design teams and customers. -
Improved collaboration
Several users can work on the same model simultaneously, speeding up projects.
Synchronous technology and traditional modeling: complementing each other
It's important to note that synchronous modeling is not a complete replacement for traditional parametric modeling. In software such as Siemens NX CAD or Solid Edge, these two approaches are complementary.
- Parametric modeling: Ideal for designs requiring precise constraints and rigorous design intent.
- Synchronous modeling: Perfect for quick adjustments, revisions and working on imported models.
This combination allows designers to choose the most appropriate method for each situation.
Conclusion
Synchronous technology therefore represents a major innovation in the simplification and acceleration of CAD processes. By eliminating the constraints associated with construction history, it enables faster, more intuitive and more flexible modifications.
In practice, it offers greater interoperability, facilitates revisions and improves collaboration between teams. Whether you're an engineer, a designer or a project manager, understanding and mastering this technology will enable you to optimize your workflows and gain in efficiency on a daily basis.
Synchronous modeling in action :
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