制造技术基础复习基本概念与基本原理英语表达(doc 11页)

制造技术基础复习基本概念与基本原理英语表达内容提要：
CHAPTER ONE DESIGN FOR MECHANICAL PROCESS PLANNING
Section 1 Basic concepts
• Production procedure of mechanical products
• Process procedure of machining
Elements of Process procedure of machining
   1 sequence 工序；2 installation 安装；3 station 工位；4 step工步； 5 pass走刀
• Sequence: process procedure that consists of several sequences during which workers operate on the works continuously in the same place;(操作者、加工地、工作对象——人为划分，相对可变)
• Installation: in a sequence if the work is required to put into position and clamp several times,the part of sequence done in one positioning and clamping is called an installation;(确定）
• Station: In an installation, by using the indexing or moving device the work is changed its position relatively to the cutting tool. All the tasks done for the work in one machining position in an installation is termed as the station;(确定）
• Step：In one station if the surface cut, cutting tool, velocity, and feed remain unchanged, these working contents are thought of as the step.(加工表面、刀具、切削速度、进给量任一改变均为另一工步）
• Pass: When the surface of the work is cut for any one time ,such task carried out is named as the pass
• (刀具在加工表面的每一次切削）
• Processing system:
•    a system that contains the work to be machined, fixture that holds the work in the proper position, cutting tool that machines the work directly, and machine tool that gives the power and provide the movements to accomplish the processing. In recent years the gauging and measuring is added to the system.
Relationship between the batch and the pattern of production
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