數(shù)控技術(shù)外文翻譯-數(shù)控設(shè)計(jì)(參考版)
2025-05-17 01:27本頁面
【正文】 黃石理工學(xué)院 畢業(yè)設(shè)計(jì)（論文）外文文獻(xiàn)翻譯 4 Numerical Control Numerical control (NC) is a form of programmable automation in which the processing equipment is controlled by means of number, letters, and other symbols. The numbers, letters, and symbols are coded in an appropriate format to define a program of instructions for a particular work part or job. The instructions are provided by either of the two binary coded decimal systems: the Electronic Industries Associations (EIA) code, or the American Standard Code for Information Interchange (ASCII) ASCIIcoded machine control units will not accept EIA coded instructions and vice versa. Increasingly, however, control units are being made to accept instructions in either code. Automation operation by NC is readily adaptable to the operation of all metalworking machines. Lathes, milling machines, drill presses, boring machines, grinding machines, turret punches, flame or wirecutting and welding machines, and even pipe benders are available with numerical controls. Basic Components of NC A numerical control system consists of the following three basic ponents: (1) Program instructions. (2) Machine control unit. (3) Processing equipment. The program instructions are the detailed step by step mands that direct the processing equipment. In its most mon form, the mands refer to positions of a machine tool spindle with respect to the worktable on which the part is fixed. More advanced instructions include selection of spindle speeds, cutting tools, and other functions. 黃石理工學(xué)院 畢業(yè)設(shè)計(jì)（論文）外文文獻(xiàn)翻譯 5 The machine control unit (MCU) consists of the electronics and control hardware that reads and interprets the program of instructions and convert it into mechanical actions of the machine tool or other processing equipment. The processing equipment is the ponent that performs metal process. In
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