英语翻译因为赶时间,翻译好的话分数我可以再加,如果你想用谷歌、有道之类的翻译工具混分,那么请你离开,3.1 Product modelA product model holds the process and product knowledge to ensure the correct fabrication o

英语翻译因为赶时间,翻译好的话分数我可以再加,如果你想用谷歌、有道之类的翻译工具混分,那么请你离开,3.1 Product modelA product model holds the process and product knowledge to ensure the correct fabrication o
英语翻译
因为赶时间,翻译好的话分数我可以再加,如果你想用谷歌、有道之类的翻译工具混分,那么请你离开,
3.1 Product model
A product model holds the process and product knowledge to ensure the correct fabrication of the product with sufficient quality.It acts as an information server to the other models in the VFMC.It also provides consistent and up-to-date information on the product lifecycle,user requirements,design,and process plan and bill of material.An instance of Class Part provides detailed information about a part to be fabricated in VFMC.Sub-classes like Process-Plan,BOM,and NcCode,are aggregated into the class Part.Classes Process-Plan and BOM manipulate information and data associated with process plans and bill of materials,respectively.Class NcCode deals with NC programs,which interacts with CAD/CAM systems.With incorporation with the facility model,this developed NC programs can be verified and checked for collisions and interference with any work-piece or tooling in the fixture.This can avoid costly machine crashes and reduce risk during initial equipment installation and produce launch.Furthermore,productivity can be improved by avoiding nonproductive time for program prove out on the machine tool and by using the simulation environment to train operators of new machines.
3.2 Facility model
Real manufacturing cell may consist of NC machines,robots,conveyors,and sensory devices.The architecture of class corresponding to the real manufacturing cell is shown in Fig.3,and represents the factory model.In VFMC,characteristics of the factory model include a detailed representation of machine behavior over time,a structure to the model that can configure and reconfigure easily,and a realistic and three-dimensional animation of machine behavior over time.Virtual machines defined within this model may be used to estimate accurately the merit of a process plan,and,based on this evaluation,determine appropriate process conditions to improve (and even optimize) the plan.Virtual robot contributes to unload and load parts into/from machines,and is used to find optimal paths without any collisions.With virtual operation,the fidelity of the machining and robot utilizing time and cost estimates is expected to improve.In addition,accurate modeling will predict the quality of the machined part,which cannot be determined easily and reliably without producing several physical prototypes.This information is invaluable to both the designer and the process planner.Physical entities such as machines and work-pieces have the explicit representation as 3-D models for their shapes,positions,and orientations.3-D models are conveniently used for calculating,geometrical attributes,checking spatial relations,and displaying computer graphics

英语翻译因为赶时间,翻译好的话分数我可以再加,如果你想用谷歌、有道之类的翻译工具混分,那么请你离开,3.1 Product modelA product model holds the process and product knowledge to ensure the correct fabrication o
3.1 产品模型
产品模型将工艺和产品知识固化,以确保正确地加工产品并达到足够的质量水平.它是VFMC其它模型的信息服务器.它还提供关于产品寿命,使用者要求,设计,工艺计划及材料清单的一致的不断更新的信息.例如,等级部件为VFMC加工的某个部件提供详细的信息.工艺计划,材料清单和数控编码等次级信息构成等级部件.等级工艺计划和材料清单将处理相应的加工和材料信息.等级数控编码与CAD/CAM系统 相结合形成数控程序.与设备模型相结合,这种数控程序能够核查和检测工件或工具对设备产成的任何碰撞和干涉.这将避免代价巨大的机器损坏,并减少初装设备和启动生产时的风险.此外,由于避免了机床在检测工艺程序过程中所耗费的非生产性时间,而且可以在模拟环境下培训工人使用新机器,生产率得到了提高.
3.2 设备模型
实际的制造单元也许会包括数控机床,机器人,传送带,和传感装置.图3显示的是与实际制造单元相吻合的等级架构,是一个工程模型.在VFMC 中,工厂模型的特点包括详细显示设备运行的即时过程,某个结构可以很容易地与模型进行配置以及更改配置,用真实三维模拟技术即时地显示设备运行情况.模型中的模拟设备可以用来准确地评估某个工艺计划的优点,依据这个评估可以确定适宜的加工条件,进而改善(甚至优化) 这个工艺计划.模拟机器人用于向机器输入部件或从机器中取走部件,可以找到没有任何干涉的最佳运行线路.通过模拟操作,可以改善设备的精确度,机器人运行时间以及费用的预测.此外,精确的模型可以预测部件的加工质量,而在通常情况下这需要多个实际的加工试验才能达到.这些信息对于设计者和工艺制定者来说意义重大.物理实体(如机器和加工部件)的形状,位置及其方向都将用3D模型明确显示.3D模型可以很方便地进行计算,几何特征显示,空间位置关系的确定,以及计算机图形显示.
(这么专业的东东,你竟然想到要在百度知道中找人翻译?佩服)