Cnc and Dnc - 1616 Words

Difference between CNC amp; NC machines NC machines In a Numerical Control machine, the program is fed to the machine through magnetic tapes or other such media. The original NC machines were essentially basic machine tools which were modified to have motors for movement along the axes. CNC machines In a Computer Numerical Controlled machine, the machines are interfaced with computers. This makes them more versatile in the sense that, suppose a change in dimension of a part is required. In a NC machine, you would have had to change the program in the tape and then feed it to the machine again. But in a CNC machine, you just change a variable in the computer and your modification is done!! Read more:†¦show more content†¦Analog Monitor. 1). Digital Monitor: A digital monitor accepts digital signals rather than analog signals all monitors use CRT technology, which is essentially analog. The term digital, therefore, refers only to the type of input received from the video adapter. A digital monitor then translates the digital signals analog that controls the actual display. 2). Analog Monitor: This is the traditional type of color display screen that has been used for years in televisions. All monitors based on CRT technology are analog. Some monitors are called digitals monitors because they accept digital signals from the video adapter. ii). Printer : Printer is a device that prints text or picture on a paper and in many cases on transparencies and other media. There are many different types of printers. Daisy wheel printer: There is a type of printer that produces letter quality type. A daisy wheel printer works on the same principle as a ball head typewriter. The daisy wheel is a disk made of plastic or metal on which characters stand out in relief along the outer edge. b). Dot Matrix Printer: Dot-Matrix printers create characters by striking pins against an ink ribbon. Each pin makes a dot and combinations of dots from characters and pictures. Dot-matrix printers vary in two important characteristics. Speed: given in characters per second the speed can vary from about 50 to over 500. Print Quality: determined by the number of pins it can vary from 9 to 24. The best dot-matrixShow MoreRelated Information Systems Case Analysis Essay3506 Words   |  15 Pagesand receiving emails, printing documents, and entering data. They are situated in a harsh manufacturing environment; consequently they are exposed to coolant from CNC machine tools, metal shavings, and dust. The company uses a network; the network is used to access printers, scanners, to transmit data and to download CNC programs to CNC machine tools. Hewlett Packard personal laptop computers are also available for employees who work in multiple buildings or travel on a regular basis. Each employeeRead MoreThe Effect Of The On The And Value Of Signal Produced From A More Convenient Form For The Tool Of Measuring2107 Words   |  9 Pagesaxis system. Incremental positioning: The next work head position is characterized with respect to the present location. 7.9 A distributed computer system in which the central computer communicates with multiple CNC machine control units is referred to as a Distributed Numerical Control (DNC). It advanced from direct numerical control in which the central computer assumed the part of the tape reader, downloading part programs one block at a time. 7.13 Non-metal working NC applications are 1.) waterRead MoreLiving on Another Planet2570 Words   |  11 Pagesrepresentations and to test these objects by simulating real-world conditions. CAM picks up where CAD leaves off by using geometrical design data to control automated machinery. CAM systems are associated with computer numerical control (CNC) or direct numerical control (DNC) systems. These systems differ from older forms of numerical control (NC) in that geometrical data is encoded mechanically. Since both CAD and CAM use computer-based methods for encoding geometrical data, it is possible for the processes