基于三维数字化模型的加工工时计算方法
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摘要
为了便于实现零件制造过程中加工工时的定额计算与管理,提出了一种以CATIA软件为平台,面向零件加工工艺过程,基于三维数字化模型的零件加工工时计算方法。该方案在CATIA环境下实现,通过提取三维数字化模型结构树中的零件加工工艺信息,识别并提取三维模型下零件的加工特征,获得相对应的加工工艺数据信息,与已经建立的零件工时给定原则进行匹配计算,从而得到基本作业时间,达到了简化工时计算,快速掌握工时的目的,从而建立一套快速获取零件加工工艺信息和工时计算的软件系统。
In order to facilitate the calculation and management of the processing time in the part manufacturing process,a CATIA software platform is proposed,which is oriented to the part processing process and based on the 3 D digital model. The scheme is implemented in the CATIA environment. By extracting the machining process information of the parts in the three-dimensional digital model tree,the machining characteristics of the parts under the three-dimensional model are identified and extracted,and the corresponding processing technology data information is obtained,which is given with the established part working hours. The principle is matched and calculated,so that the basic working time is obtained,the simplified working hour calculation is realized,and the purpose of working time is quickly grasped,thereby establishing a software system for quickly obtaining the processing information of the parts and the calculation of the working hours.
In order to facilitate the calculation and management of the processing time in the part manufacturing process,a CATIA software platform is proposed,which is oriented to the part processing process and based on the 3 D digital model. The scheme is implemented in the CATIA environment. By extracting the machining process information of the parts in the three-dimensional digital model tree,the machining characteristics of the parts under the three-dimensional model are identified and extracted,and the corresponding processing technology data information is obtained,which is given with the established part working hours. The principle is matched and calculated,so that the basic working time is obtained,the simplified working hour calculation is realized,and the purpose of working time is quickly grasped,thereby establishing a software system for quickly obtaining the processing information of the parts and the calculation of the working hours.
引文
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[2]蔡永林,李宗斌,席光.基于典型零件的计算机辅助时间定额系统[J].工业工程,2001(4):54-56.
[3]黄喜,王真星. CAPP中工时定额系统的研究与开发[J].电脑开发与应用,2002(9):2-4.
[4]马自勤,宋崎,王秀伦,等.工艺数字化系统中工时定额管理子系统[J].大连铁道学院学报,2002(12):41-44.
[5]韩志仁,许增辉,胡烨.面向工时定额的数控加工工艺信息快速提取技术研究[J].制造业自动化,2012(12):26-28.
[6]张荣霞,张树生,周竞涛.基于MBD的零件制造模型管理[J].航空制造技术,2012(7):6-9.
[7]James D. Foley,Andries vanDam,Steven K. Feiner. Introduction to com-puter Graphics[M]. China Machine Press. 2005.
[8] Subrahmanyam S, Wozny M. An overview of automatic featurerecognition techniques for computer-aided process planning[J]. Com-puters in Industry,1995,26(95):1-21.
[9]Joshi S,Chang T C. Graph-based heuristics for recognition of machinedfeatures from a 3D solid model[J]. Computer-Aided Design,1988,20(2):58-66.
[10]Ferreira J C E,Hinduja S. Convex hull-based feature-recognitionmethod for 2. 5D components[J]. Computer-Aided Design,1990,22(90):41-49.
[11]Gao S,Shah J J. Automatic recognition of interacting machiningfeatures based on minimal condition subgraph[J]. Computer-Aided De-sign,1998,30(9):727–739.
[12]Rahmani K,Arezoo B. A hybrid hint-based and graph-basedframework for recognition of interacting milling features[J]. Computersin Industry,2007,58(4):304–312
[13]戴百生.基于STEP的制造特征识别与三维重建技术研究[D].哈尔滨:东北农业大学,2010.
[14]洪湖鹏,郁鼎文,张玉峰,等.通用化计算机辅助工时系统的研究和开发[J].制造技术与机床,2001(7):20-23.
[15]理查德B蔡斯.生产与运作管理制造与服务[M].北京:机械工业出版社,1999.