Open Source Computer Aided Modeling and Design
CadQuery Assembly System
CadQuery (CQ) [1] is a Python library for building of parametric 3D models. The overarching design goal is to provide a fluent API that enables the user to express the design in a natural way. CQ is based on the open source CAD kernel from OpenCascade [2] and therefore offers industry standard B-Rep modeling capabilities and allows exporting to STEP and many other formats.
With the upcoming 2.1 release [3] there many improvements coming to CQ. I will briefly summarize them but will focus on the new assembly system. The new CQ version allows the user to combine individual CQ objects into an assembly with the possibility of nesting. The individual object positions can be specified manually in terms of constraints that are solved using a numerical solver. Once an assembly is defined and all the positions specified it can be exported to STEP preserving the assembly structure or an internal OpenCascade XML format. In the I will discuss the current assembly system design, capabilities, limitations and possible future development directions.
References
[1] https://github.com/CadQuery/cadquery
[2] https://dev.opencascade.org/
[3] https://github.com/CadQuery/cadquery/releases/tag/2.1RC1
Additional information
| Type | devroom |
|---|
More sessions
| 2/7/21 |
During this short talk, I will introduce CADCloud an online platform tightly integrated with FreeCAD and designed to manage version tracking and user collaborations in CAD. CADCloud aims to create a reference database of 3D models generated by FreeCAD users and allow them to easily handle their lifecycle and sharing.
|
| 2/7/21 |
Presentation of the new features in sparselizard 202012. They include adaptive mesh refinement, interpolation order adaptivity (hpFEM), time-adaptivity, speedups, syntax optimization, link to gmsh, move to cmake and a large number of added functions.
|
| 2/7/21 |
The architecture, engineering, and construction industry is a vast, diverse, but highly proprietary field. The primary means of data exchange between architects, structural, MEPF engineers, cost planners, surveyors, program schedulers, asset/facility management and more revolve around a concept known as Building Information Modeling (BIM) in addition to CAD. Many of these tools do not exist as free software, or are drastically better, or are dominated by a monopoly vendor market with lock-in ...
|
| 2/7/21 |
KiCad 6 features a new real-time netlisting system that is used to determine connectivity between items in schematics as the user draws them. Previously, netlisting in KiCad was a relatively slow operation that only took place when commanded by the user. I will discuss the motivations behind this system, some details of its implementation, benefits it brings, and some opportunities for future improvements.
|
| 2/7/21 |
Open Cascade Technology is a framework for B-Rep modeling. The lecture presents a status update from the previous talk (at FOSDEM 2020).
|
| 2/7/21 |
ngspice development is heading towards the ngspice-34 release. Three major activities are to be reported: We have integrated the high frequency bipolar model HICUM-2.4 from TU Dresden, Germany into the C sources of ngspice. Efficient simulation of GHz circuits becomes possible. ngspice has been adapted to efficiently serve the upcoming Open Source Skywater 0.13um CMOS PDK. adms for ngspice has been enhanced to allow integrating Berkeley BSIM Bulk and CMG models. Application examples will show ...
|
| 2/7/21 |
The term brain-computer interface is well known among engineers, tinkerers, and specifically among researchers. Companies like BackYard Brains made it accessible for all at a relatively affordable price, with their initiative of neuroscience for all. The price of their device and the ease of usability it comes with is pretty good for a school student who's just looking for an introduction to neuroscience but, the resolution of Arduino's ADC (10bit) doesn't allow it to be used for any real ...
|
