数控专业英语 教学课件 沈延秀 Part 6.pdfVIP

Part Ⅵ CNC EDM  Unit 11  Unit 12 Unit 11 Text Electric Discharge Machining New Words and Phrases  thermoelectric [7WE:mEui5lektrik] adj．热电的  nontraditional [9nCntrE`dIFEnEl] adj．非传统的，不符合传统 的  erosion [i5rEuVEn] n．腐蚀，侵蚀  onwards [5CnwE:dz] adv．向前地，在先地  scheme [ski:m] n．配置，图解，计划，设计，图谋，策划  anode [5AnEud] n．极，正极  cathode [5kAWEud] n．阴极  evaporate [i5vApEreit] vt.(使)蒸发，消失  effectiveness [i5fektivnis] n．效力  submerge [sEb5mE:dV] vt浸没，淹没，湮没；vi.潜水  dielectric [7daii5lektrik] n．电介质，绝缘体；a．非传导性的  hydrocarbon [5haidrEu5kB:bEn] n．烃，碳氢化合物  conform [kEn5fC:m] vt.使一致，使顺从，符合，相似， 吻合  impression [im5preFEn] n．印象，感想，盖印，压痕  servocontrol [5sE:vEkEn5trEul] n．伺服控制，随动控制  sense [sens] n．感觉，判断力，理性感，理解，认识  servomotor [5sE:vEu7mEutE] n．伺服马达，补助电动 机  stepper [5stepE] n.步进者  solenoid [5sEulinCid] n．螺线管  schematically [ski5mAtikli] adv．示意性地  order [5C:dE] n．次序，顺序，命令，定购；vt.定购，定 制  kerosene [5kerEsi:n] n．煤油，火油  brass [brB:s] n．黄铜，黄铜制品，厚脸皮  spark gap 火花隙 Notes  [1] The use of thermoelectric source of energy in developing the nontraditional techniques has greatly helped in achieving an economic machining of the extremely low machinable materials and difficult jobs. 利用电热能开发非传统(加工)技术，有助提高对切削性能差， 难加工材料的加工经济性。  [2] The process of material removal by a controlled erosion through a series of electric sparks ，commonly known as electric discharge machining，was first started in the USSR around 1943. 通过控制一系列电火花的腐蚀来除去材料的工艺称为电火花加 工，该工艺于1943年在前苏联起步。  [3] Since the spark occurs the spot where the tool and the workpiece surfaces are the closest and since the spot changes after each spark(because of the material removal after each spark)，the spark travel a11 over the surface，and finally the work face conforms to the tool surface. 由于火花发生于刀具和工件的最接近点，又由于火花产生后(间 隙)发生变