SCIENCE AND TECHNOLOGY ENGLIAH FOR MECHANICAL ENGINEERING Selection of machining equipment and tooling for operations Determination of operating procedure for each operation k Determination of operational dimensions and tolerances for machining operations k Selection of machining conditions and determination of time Standards Of each operation Composition of Machining processes A machining process is made up of a number of operations through which raw materials or blanks are transformed into parts The basic components of machining processes are operations An operation is a complete portion of the machining process for cutting, grinding, or otherwise treating, a workpiece (or seyeral workpieces simultaneously)at a single workplace. An operation is accomplished by one or several operators(until they start to repeat the same procedure for the next workpiece or next set of workpieces in the batch) 批[ work piec件SCIENCE AND TECHNOLOGY ENGLISH FOR MECHANICAL ENGINEERING ﹡Selection of machining equipment and tooling for operations. ﹡Determination of operating procedure for each operation. ﹡Determination of operational dimensions and tolerances for machining operations. ﹡Selection of machining conditions and determination of time standards of each operation. Composition of Machining Processes A machining process is made up of a number of operations through which raw materials or blanks are transformed into parts. The basic components of machining processes are operations. An operation is a complete portion of the machining process for cutting, grinding, or otherwise treating, a workpiece (or several workpieces simultaneously) at a single workplace. An operation is accomplished by one or several operators (until they start to repeat the same procedure for the next workpiece or next set of workpieces in the batch). 一批 work piece 工件