rough machining

All the surfaces of ferrous metals exposed to the air which undergo rough machining or finish machining shall be cleaned with solvent and be treated against rust.

所有暴露在大气中的铁类金属粗加工或精加工表面在运输之前应经溶剂清洗干净，并进行防锈处理。

Rough machining and semi-finishing of the material in its soft ( annealed ) condition.

在软 ( 退火 ) 工况下材料的粗加工和半精加工.

An automatic code generation algorithm for three axes NC rough machining of scattered data is introduced.

介绍一种用于离散数据的三轴数控粗加工代码生成算法.

Machining man-hour calculation the past mainly uses the rough experience to develop time quota estimation method, time quota standard is not unified.

过去的机械加工工时核算主要采用粗略的经验估算方法制定时间定额，时间定额标准很不统一。

Commonly used in rough machining are castings, forgings, profiles and welding parts.

机械加工常用的毛坯有铸件 、 锻件 、 型材及焊接件.

Technical probe into rough machining of the blended yarn of rabbit hair and Shetland wool

粗纺免毛雪兰毛混纺纱的工艺探讨

The appro ches they adopt to improve the accuracy are as follows: removing casting error of the blank holes, improving the rough-finishing quality of the piston pin holes, carefully designing the special tools and better the process in pin hole machining.

提高精度的途径是；消除毛坯孔的铸造误差、提高活塞销孔的粗加工质量、注重加工销孔专用工装的设计和加强销孔加工的工艺安排。

Aiming at rough machining, the paper founds tool-path programming system and makes computer have the capability of intellective discursion, makes free surface to be regular and auto-optimizes tool-path according to the character of shape and technics.

针对粗加工建立刀具轨迹规划系统，赋予计算机知识的推理能力，把自由曲面规则化，根据形状特征和工艺特征自动优化刀具轨迹。