The evolution of CNC machining started in the 1940s…
1940’s – 1950’s
- A digital electronic computer called ENIAC (electrical numerical integrator and calculator) was developed.
- John T. Parsons invented numercal control to make machines more precise. They were originally used to make aerospace parts.
- A three-axis numerically driven milling machine demonstration was successful.
- Numerically controlled machines start to be used in a wider variety of industries because they became smaller and less expensive.
- By 1964, there were over 35,000 NC machines in use nationwide.
- G-Code was developed by Gerber Scientific Instruments.
- The Electronic Industry Alliance standardized G-Code.
- The first CNC machines were introduced. Thus, the first CNC machine shops were born.
- The demand for CNC machines grew.
- Other countries such as Germany and Japan started making CNC machines at a lower cost.
- In 1976, CAD and CAM systems became available.
- Also in 1976, the Sinumerik System 7 introduced in 1976 was the first
CNC equipped with a microprocessor
- By the 1980’s, the largest CNC machine manufacturers were no longer U.S. companies.
- Manufacturing companies were busy retrofitting their manual machines into CNC machines.
- The advancements in hardware paved the way for CAD-CAM software development to become more efficient and less expensive.