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数控技术英语

1Numerical control is designed to control the operation of a machine tool by a series of coded instructions called a program。
2A part program is stored in the form of blocks of information， and each block has the numerical data needed to manufacture a segment of the work-piece。
3Like a conventional machine tool， the NC system can’t replace the manual actions of the operator either。
4数字模拟转换器的英语全称是
5模拟数字转换器的英语缩写是（）
6An important advance in the philosophy of NC of machine tools was the shift toward the use of controller units instead of computers in NC systems。
7DNC is short for direct numerical control。
8One of the aims of CNC systems is to replace as much of the conventional NC software with hardware as possible。
9The part program contains a description of the（）
10Several machine tools are directly controlled by a central computer， this is the（）
11As NC machines need a large capital investment， we should efficiently use them。
12Machining is the manufacturing in which the workers can remove the excess material of a part on a machine tool。
13The feed is defined as the distance the cutting tool projects below the original surface of the work-piece。
14（）is the relative lateral movement between the tool and the work-piece
15EDM（Electrical Discharge Machining）refers to in Chinese term。
16Part programmers must have a solid knowledge of machining processes and know a lot of the capabilities of the machine tool。
17NC part programming includes three tasks：the collection of all data needed， the calculation of the tool path and the arrangement of those given and calculated data。
18The required data contained in each line of the manuscript includes all machining instructions for transferring the cutting tool from one point to the next one。
19Programmers should（）the particular NC machine， its capabilities， and specific codes
20The core of（）， however， is preparation of the manuscript， its conversion into a verified tape， and subsequent editing
21Never attempt to machine a work-piece without first checking the operation of the machine。
22Before starting a production run， it；s not necessary to perform a trial run。
23When using a tool compensation function，you should check the direction and amount of compensation。
24Incorrect operation may lead to（）
25Before operation the machine， you should read the contents in the（）
26CNC diagnostic support at present includes four basic categories：start-up diagnostics，
27Start-Up Diagnostics are a diagnostic routine that regularly operate automatically when the CNC is switched on。
28Off-Line Diagnostics are manual diagnostics which are intended for thorough；
29Numerical control machine operators set up and tend（）
30With（）based CNC machine tool controllers， maintenance and repair are no longer an issuepc
31Strut-machining department means 柱式机床部门。
32The CNC can‘t send messages to those users that its Windows account can access。
33Factory Automation（FA） is becoming the developing trend of factories。
34By connecting（）to the personal computer and the CNC， the programmer can transfer programs from the computer to the CNC
35What does CAD mean？
36Not only most of major machine tool manufacturers but also the CNC suppliers offer a wide variety of end-user training on CNC machines。
37During the early years of hardwired NC， built-in diagnostic tools existeD。
38The emphasis has changed from "；how to fix it"； to "；how it works"；。
39The function of direct current regulated power supply is to input an alternating current power of 220volts， so that it can output（）
40FANUC control system works under a（）volts voltage
41Although the robots resemble human beings， they cannot do the work of humans。
42Scientists are developing an intelligent robot that can see and touch and make decisions like human beings。
43The technology of robots is completely the same as the NC technology in every way。
44PC（Proportional Controller） refers to in Chinese term。
45It is a very big opportunity for human； the challenge is（）it wisely
46In today’s aerospace and aeronautics industry， a complete aircraft may be designed without a CAD/CAM system。
47Advanced CAD/CAM systems include not only solid geometry modeling capability but also NC verification programs。
48Generally speaking， a CAD system is an analytic tool for design。
49To avoid accidents， read safety guidelines and related（）carefully and operate the system correctly
50If the NC machine tool is used in a wrong manner， it will（）serious injuries and machine damages
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