机电英语(教育部07版专业英语)Unit7-IndustrialRobot.pptVIP

Paragraph 1 An industrial robot is a general-purpose, programmable machine possessing certain humanlike characteristics. Paragraph 1 The most typical humanlike characteristic of a robot is its arm. Paragraph 1 This arm, together with the robots capacity to be programmed, makes it suitable to a variety of production tasks, including machine loading, spot welding, spray painting, and assembly. Paragraph 1 The robot can be programmed to perform a sequence of mechanical motions, and it can repeat that motion sequence over and over until reprogrammed to perform some other job. Paragraph 2 An industrial robot shares many attributes in common with a numerical control machine tool. Paragraph 2 The same type of NC technology used to operate machine tool is used to actuate the robots mechanical arm. Paragraph 2 The robot is a lighter, more portable piece of equipment than an NC machine tool. Paragraph 2 The uses of the robot are more general, typically involving the handling of workparts. Also, the programming of the robot is different from NC part programming. Paragraph 2 Traditionally, NC programming has been performed off-line with the machine commands being contained on a punch tape. Paragraph 2 Robot programming has usually been accomplished on-line, with the instrunction being retained in the robots electronic memory. Paragraph 2 In spite of these differences, there are definite similarities between robots and NC machines in terms of power drive technologies, feedback systems, the trend toward computer control, and even some of the industrial applications. Paragraph 3 The popular concept of a robot has been fashioned by science fiction novels and movies such as Star Wars. Paragraph 3 These images tend to exaggerate the robots similarity to human anatomy and behavior. The human analogy has sometimes been a troublesome issue in industry. Paragraph 3 People tend to associate the future use of advanced robots in factories with high unemployment and the conquer of