When the outcome of the design evaluation is satisfactory,the design documentation is prepared.This includes the preparation of drawings,reports,and bills of materials.Conventionally,blueprints are made from the drawings and passed on to manufacturing.
As illustrated in Fig. 10-1,the manufacturing process begins with process planning,using the drawings from the design process,and it ends with the actual products.The outcome of process planning is a production plan,a materials order,and machine programming.Other special requirements,such as design of jigs and fixtures,are also handled at this stage.The relationship of process planning to the manufacturing process is analogous to that of synthesis to the design process:It involves considerable human experience and qualitative decisions.This description implies that it would be difficult to computerize process planning.Once process planning has been completed,the actual product is produced and inspected against quality requirements.Parts that
pass the quality control inspection are assembled,functionally tested,packaged,labeled,and shipped to customers.
参考译文:
当设计评价结果令人满意时,就准备设计文档。设计文档包括图纸、报告和材料清单的准备。按常规,应将设计图纸制成蓝图交送制造部门。
如图10-1所示,制造过程根据设计过程的图纸始于工艺计划,止于实际的产品。工艺计划的结果就是生产计划、材料订单和加工程序。其他诸如设计钻模和夹具这样的特殊要求都在这一阶段进行处理。工艺计划与制造过程的关系就如同综合与设计过程的关系:它涉及到许多经验和定性的判断,这表示很难对工艺计划进行计算机化。一旦工艺计划结束,便开始生产实际产品并根据质量要求进行检查。对通过质量检查的零件进行组装、功能测试、包装、贴标签并发运给客户。
NOTES:
[1] 本句主要结构是They have tried to use... to automate... and tie...,其中to use有3个并列宾语;separate此处为形容词,义“分开的”、“独立的”等。
[2] in the form of a sketch or a layout drawing以草图或布局图的形式;that shows...定语从句,修饰 sketch or a layout drawing。
KEYWORDS:
CAD(computer-aided design) 计算机辅助设计
CAM(computer-aided manufacturing) 计算机辅助制造
CAE(computer-aided engineering) 计算机辅助工程
product cycle 产品周期
prototype 原型
feasibility 可行性
qualitative 定性的
symmetry 对称,匀称
cross-sectional property 截面性质
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