共查询到19条相似文献,搜索用时 140 毫秒
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韩亚洲 《机械工人(冷加工)》2012,(6):73-74
随着制造业水平的提高,越来越多的五轴加工中心被用于叶片和整体叶轮的型面加工,CAM编程软件可以生成五轴叶轮型面加工程序,五轴加工机床可以实现高精度的叶轮型面加工。但五轴机床在长期使用或者经过搬迁后,五轴尺寸链会有所变化, 相似文献
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《现代制造技术与装备》2017,(2)
在进行压气机叶轮的加工过程中,需要保障其实际的叶轮形状和压气机叶轮的高度符合,这是保障压气机叶轮稳定形成的关键和基础。为了使压气机叶轮五轴联动的数控加工更加具有高效率、高精度甚至是高强度,需要充分考虑压气机叶轮叶片的几何造型以及加工刀具的轨迹优化处理。本文将对压气机叶轮五轴联动数控加工技术进行探究,以期给相关的从业人员提供帮助。 相似文献
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对叶轮数控加工较为困难,根据叶轮的几何特征进行叶轮的三维建模,明确五轴数控铣削加工工艺,基于NX2000软件制定叶轮的粗、半精和精加工时的刀具轨迹,通过NX加工—后处理构造器创建五轴数控中心工作台,并生成叶轮NC程序代码,完成了叶轮的多轴数控加工。实验结果表明,该流程缩短了叶轮加工的生产周期,降低了生产成本,在一定程度上提供了叶轮加工制造的理论基础并具有一定的实用价值。 相似文献
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一家日本的五轴航空航天制造商认为,他们的未来是高速加工。不管哪里的航空航天制造商,这种倾向都很相似,所以我们也很容易理解位于Aikoku阿尔法工程公司(AEC)里的五轴加工中心为什么在日本名古屋修建了一个航空航天加工车间。AEC是日本最具经验的五轴加工制造商,它于24年前第一次使用五轴加工技术,如今在多种配置下可同时操作约17台五轴机器。许多加工车间的工作人员也成为了五轴加工技术及数控编程的专家,为商务和航空器应用设计结构、制作水力零件以及涡轮刀片、叶轮、喷气机和火箭发动机上的其它复杂的零件。 相似文献
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整体式叶轮的加工应在多轴数控加工中心上进行,并借助CAD/CAM软件和数控加工仿真软件,进行三维造型、自动编程和数控仿真加工.应用CAXA制造工程师和VERICUT软件,对整体式叶轮进行三维造型、自动编程和仿真校验,可在实际数控加工该零件之前,及时检查出多轴数控加工程序中出现的刀具干涉与碰撞等问题;对多轴数控加工程序的不足进行调整和修改,可提高多轴数控加工中NC程序的准确性和可靠性;协助工艺员编制出准确和合理的数控加工工艺,可保证整体式叶轮数控加工的高效率、高质量和高精度. 相似文献
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以典型的叶轮零件的五轴加工为应用案例,利用Unigraphics知识熔接技术,二次开发了叶轮五轴加工制造模板,该模板具有知识的获取、知识的创成和知识的重新运用三大功能,利用该模板和数字化制造过程导航,可快速方便地进行人机交互,帮助缺乏五轴加工经验和叶轮编程经验的工程技术人员快速生成叶轮五轴加工刀具轨迹,真正体现知识驱动制造的精髓。 相似文献
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Pyo Lim 《The International Journal of Advanced Manufacturing Technology》2009,45(7-8):821-829
Turbo-machinery gradually has expanded its business into the automotive and aircraft industries. A core part of turbo-machinery is the impeller which can lead to manufacturing problems because it has twisted surfaces. Therefore, impeller machining requires five-axis machining technology and expert knowledge. Five-axis machining has the advantages of being able to select a variety of tool axis in the machining and remove uncut region which are impossible in the three-axis machining, which could obtain high productivity and good surface quality. Rough cutting is one very important operation as it affects productivity in the impeller machining and it is necessary to determine cutting strategies and select optimal cutting condition. This paper proposes a statistical method to optimize the rough cutting parameters in impeller machining by response surface methodology and efficient strategy to divide cutting region. Firstly, the rough operation was divided into three steps to remove volume from inducer to exducer and two steps were also added to remove the fillets between blade surfaces and hub surfaces. These machining strategies are selected as the qualitative factors when the response surface method is used. Secondly, cutting time was set as the response factor for productivity, and step-down, step over, and feed rate were determined as independent factors. Finally, the response surface model was estimated by a single surface in order to predict rough cutting time and the optimum cutting conditions were searched by the estimated model. 相似文献
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曾小梅 《机械工程与自动化》2012,(4):52-54
叶轮零件结构复杂,其数控加工技术普遍存在编程复杂,困难且效率低下等问题.介绍使用典型的CAD/CAM软件UG7新增的叶轮加工模块,对深窄槽道、大扭角的滑轮发动机叶轮的五坐标加工程序刀路进行编制,大大提高了叶轮加工编程的速度和效率,为叶轮零件的编程加工提供了新思路和方法. 相似文献
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由于非典型叶轮结构复杂,无法使用主流CAD/CAM软件提供的叶轮5轴模块,在粗加工阶段采用3轴定向加工时,残余毛坯留量体积大形状不规则,严重影响了5轴加工的效率和质量。为此,一方面对于叶轮开式区域采用双圆柱面投影法获得驱动曲面,从而实现4轴联动粗加工,切削刚性大效率高;对于非开式区域则通过构建驱动曲面获得5轴联动刀轨,刀轨连续且刀轴矢量无突变。另一方面,提出了一种基于NC程序的刀轴矢量评价方法,可快速直观地评价5轴编程质量。实际使用结果表明:基于驱动曲面的刀轴矢量优化法能够显著提高复杂工件5轴加工的效率和质量。 相似文献
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H.-T. Young L.-C. Chuang K. Gerschwiler S. Kamps 《The International Journal of Advanced Manufacturing Technology》2004,23(3-4):233-239
A clear trend shows that most products or mechanical components, especially those regarding aerospace applications, are designed to fit the requirements of free form surface features. When a 3-axis computer numerical controlled (CNC) machining centre is used to produce a typical centrifugal impeller, great difficulties, i.e., collisions between the cutting tool and impeller, need to be overcome. In this case, sophisticated five-axis machines have to be utilised. Presently, most commercial computer-aided manufacturing (CAM) systems for five-axis control are lacking generality, and functions for the rough tool-path generation are far less than required. The rough machining is recognised as the most important procedure influencing the machining efficiency and is critical for the success of the following finishing process. However, great difficulties are expected to arise in performing five-axis rough machining. The main objective of the present study is to overcome this problem by combining related machining technology. As a result, CL data based on the geometry model of blade and hub of the impeller are generated. Finally, the CL data is confirmed through software simulation. The results of verification prove the machining methodology and procedure to be successful. 相似文献
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介绍三坐标检测技术在叶轮等多轴加工产品检测中的应用,探讨的三坐标检测技术能够满足叶轮等多轴加工产品检测的需求和保障加工产品的质量,并且能够促进加工精度的提高。 相似文献
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叶轮是典型的多轴加工零件,加工中经常出现空刀、过切、欠切、表面质量不高等问题。文中通过应用UG软件的叶轮加工模块完成整体叶轮加工的自动编程,并基于VERICUT软件实现了米克朗UCP710型五轴加工中心铣削整体叶轮的仿真与优化,提高了加工质量和效率。 相似文献