numerical control

Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Wikipedia.

computer-aided manufacturing

computer-aided manufacturing (CAM), a form of automation where computers communicate work instructions directly to the manufacturing machinery. The technology evolved from the numerically controlled machines of the 1950s, which were directed by a set of coded instructions contained in a punched paper tape. Today a single computer can control banks of robotic milling machines, lathes, welding machines, and other tools, moving the product from machine to machine as each step in the manufacturing process is completed. Such systems allow easy, fast reprogramming from the computer, permitting quick implementation of design changes. The most advanced systems, which are often integrated with computer-aided design systems, can also manage such tasks as parts ordering, scheduling, and tool replacement.
The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.

numerical control

A category of automated machine tools, such as drills and lathes, that operate from instructions in a program. Numerical control (NC) machines are used in manufacturing tasks, such as milling, turning, punching and drilling. Both NC and CNC (computerized NC) are used to describe this category.

First-generation machines were hardwired to perform specific tasks or programmed in a very low-level machine language. Today, they are controlled by microprocessors and are programmed in high-level languages, such as APT and COMPACT II, which automatically generate the tool path (physical motions required to perform the operation).

The term was coined in the 1950s when the instructions to the tool were numeric codes. Just like the computer industry, symbolic languages were soon developed, but the original term remained.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
- What are the various stages in the value chain of the global computer numerical control (CNC) industry?
The Global Computer Numerical Control (CNC) Machines Market size is expected to reach $94.3 billion by 2025, rising at a market growth of 6.6% CAGR during the forecast period.
The author has written this text for students and researchers in the fields of computer-aided design (CAD), computer-aided process planning (CAPP), computer-aided manufacturing (CAM) and computer numerical control (CNC) as well as engineers working in industrial R&D facilities.
When building the model with numerical control machines we chose: a debtor machine (D1), a lathe machine (S1) and a boring and grinding machine (MAR1).
The Sinumerik 840D NCU 573.5 CNC system, when used with the integrated PLC 317-2DR provides users with approximately 160 percent higher numerical control performance and 300 percent PLC performance over previous versions as well as more CNC user memory.
In the year to March 31, the world's top numerical control equipment maker posted a group pretax profit of 55.38 billion yen, down 40.5%, on an 18.0% fall in sales to 216.43 billion yen.
Specializations include machinist, computer numerical control programmers, and maintenance and machine builders.
The proposed agreement would offer jobs at the Deere plant to students from the community college's computer numerical control machining program.
Among the illegally exported goods are chlorine trifluoride, a raw material that could be used as missile fuel, numerical control equipment and programs that could be diverted to manufacturing weapons, and valves that could be for producing chemical weapons.
Ziegler later patterned his operations after his Japanese counterparts by adding advanced computer numerical control (CNC).
In manufacturing industries, Computer Numerical Control (CNC), Direct Numerical Control (DNC), and industrial robots greatly increase manufacturing flexibility by controlling parts manufacture through software programming.
M2 PRESSWIRE-August 5, 2019-: Global Computerized Numerical Control Industry Analysis 2019, Market Growth, Trends, Opportunities Forecast To 2024

Full browser ?