Decades of development
The development of CAD/CAM systems began in the 1950s and continued through decades of rapid progress in the 20th century.
The 1950s marked the foundation, particularly in manufacturing, with the emergence of numerical control (NC) and early CAM concepts that made machining programmable.
The 1960s introduced the first interactive computer graphics systems, most notably Sketchpad, which laid the conceptual foundation for modern CAD. At the same time, CAD/CAM began to take shape in aerospace and defense applications.
The 1970s are often considered the birth of practical CAD/CAM systems. Early CAD tools appeared, mainly as 2D drafting systems running on mainframes, and were used primarily in industries such as aerospace and automotive.
The 1980s marked a major transition with the rise of personal computing and commercial CAD software. This period saw the introduction of solid modeling, early parametric concepts, and widely used systems like AutoCAD and CATIA.
The late 1980s and early 1990s were critical for the development of modern CAD due to the emergence of B-rep solid modeling kernels such as Parasolid and ACIS, which enabled robust and precise 3D modeling.
The 1990s also saw the widespread adoption of parametric, feature-based modeling and the expansion of 3D CAD into mainstream engineering workflows.
The 2000s brought increased accessibility, marked by the rise of free and open-source CAD software, including platforms built on kernels such as Open CASCADE Technology (OCCT). This period also saw improved interoperability through standards, as well as more tightly integrated CAD/CAM workflows across industries.
In the 2010s, CAD evolved further with the introduction of cloud-based platforms, allowing real-time collaboration, version control, and browser-based modeling environments.
In the 2020s, the focus has shifted toward automation and intelligence, including generative design, AI-assisted modeling, and fully digital engineering pipelines.