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五轴加工属于数控加工比较重要的技术部分,虽然三轴加工中心在传统的模具加工中有着普遍的应用,但随着我国在模具加工技术上的快速发展以及对加工表面更高的要求,传统的立式加工中心和三轴加工中心逐渐满足不了生产的要求,五轴加工中心的出现不仅提高了加工的光洁度,还克服了传统方法中许多的不足。本文就从五轴加工中心的概念出发,分析了三轴加工中心与五轴加工中心的区别,说明了五轴加工中心的优势,并说明了五轴加工中心在汽车模具中的简单应用。 相似文献
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伴随着加工中心在制造业中的大量出现,作为加工中心的关键部件,圆盘式刀库得到了越来越多的应用,在加工中心的设计和调试过程中,必须熟练掌握圆盘式刀库的控制逻辑。应用好刀库,能有效提高加工中心的加工效率和加工精度。本文以BT40型圆盘式刀库为例,详细介绍了圆盘式刀库的控制逻辑,为设计圆盘式刀库的控制逻辑提供参考依据。 相似文献
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五轴加工中心的出现,极大推动了模具加工技术的发展和进步,克服了传统的三轴加工方式中的许多不足之处。五轴加工中心对刀轴方向改变的特性,不仅能提升模具的加工精度与表面质量,而且能增强通用刀具的适用场合、从而减少刀具的更换。本文将先就五轴加工中心的概念、特点和优势展开论述,然后重点讨论五轴加工中心在模具加工中的优势应用点。 相似文献
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《机电产品开发与创新》2017,(5)
加工中心在机械工程领域的应用主要体现在汽车制造以及航天航空装备制造等,这些领域的加工制造都属于高精密集中型。加工中心可以保证零件的加工精度,促进生产加工过程的精确性和规范化。加工中心的"位置精度"是直接影响加工精度的一个重要方面,也是精密零件加工制造时要考虑的一个重要因素。采用激光干涉仪测量后进行误差补偿可以提高加工中心的位置精度。 相似文献
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随着加工技术的不断进步与发展,目前数控加工中心作为编程工艺技术应用的核心,其在我国现代化建设与发展中也逐渐展现出不可替代的地位。本文立足于现状,首先介绍了数控加工中心的编程控制特征与调试特征,其次对数控加工中心的加工工艺技术条件、应用模式等内容进行了分析和介绍,希望可以有效提升数控加工中心的应用效果,为促进数控制造行业的发展提供思路和见解。 相似文献
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随着现代机械工业产品向高、精、尖方向发展,多品种、中小批量生产方式的应用范围越来越扩大,加工中心(MC)的应用也日益普及。近年来,计算机技术飞越发展,CAD/CAM系统在加工中心上也得到了广泛应用,现以加工高精度模具为例,介绍其在加工中心上的应用。 一、建立机床数据库 用加工中心加工模具等零件时,实际上仍需根据以往的经验和有关资料来决定加工条件与切削用量。最近的加工中心多为具有CRT图解功能的人机对话机,已附有一些切削用量方面的信息与资料,但这些数据并未充分考虑具体所使用机床的特性,实际上只是极其一般的数据,并不完全… 相似文献
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加工中心在机加工领域正广泛地应用着,编程人员和操作人员对刀本领是必须的,在保证工件加工质量的前提下追求加工效率也是必须的。在加工中心现场教学过程中,学生根据正确的数控程序加工零件时,会出现撞刀或工件在Z轴的加工精度不合格的现象。针对上述问题,根据现场的加工和教学经验探索出"三基"(基准刀、基准棒、基准面)法确定Z轴参数。实践表明,此方法简单、快捷而又不失精度,正应用在我校的加工中心实训教学中。 相似文献
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为了提高机床的利用率,需要在加工前通过对实际数控加工过程的仿真模拟来获取实际加工的最优化参数。在实际生产过程中,数控机床的加工工序不同,其所需要优化的目标就会有所不同,本文主要针对数控机床加工参数优化问题展开相应的探讨,通过建立数控加工的多目标优化模型进行仿真模拟,并结合遗传算法对每一种加工段进行加工参数优化,通过每一个特征段的优化累加可以获得实际的优化效果。经过实例证实,多元目标函数优化模型的优化效果良好。 相似文献
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Manufacturing is always the heart of majority of industries. Drilling is an extremely important and an essential machining process which requires a lot of attention as in most of the cases it is required for assembly purposes. Majority of the holes produced during drilling are made with the help of Vertical Machining Centre (VMC) meant for pin- hole assembly. Though the tolerance is within limit, assembly problems arise due to the improper geometry of these holes. Various geometrical tolerances like cylindricity, circularity, perpendicularity and position errors are responsible for such assembly problems. This investigation is focussed on cylindricity and perpendicularity in the drilling of Wrought Cast Steel Grade B (WCB) material using SOMX 050204 DT insert. In this work, effect of machining variables like cutting speed, feed rate and depth of cut (canned cycle) are investigated and optimized using grey relational analysis (GRA). Reliable experiments are conducted based on a 33 full factorial, replicated twice. Second order regression models are developed for predicting cylindricity and perpendicularity. The models’ adequacy has been checked by calculating correlation coefficient. It shows that the developed models are well fitted for the prediction of responses within the specific range of input variables. 相似文献
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MACHINABILITY OF NICKEL-BASED HIGH TEMPERATURE ALLOYS 总被引:2,自引:0,他引:2
Nickel-based high temperature alloys have excellent physical properties, which make them ideal for use in the manufacture of aerospace components. However, they exhibit poor machinability. Though conventional machining in industries is currently being carried out using carbide tools, there is little scope for improving the material removal rate. Machining, being a major operation, needs to be improved in order to reduce the throughput time. High Speed Machining (HSM) is a promising technique for increasing productivity in this regard. This paper mostly reviews research and development work in the machining of nickel-based high temperature alloys carried out over the last 15 years with the objective of assessing the present scenario. Emphasis is laid on Inconel 718, which is most commonly used. Both turning and milling operations using conventional and High Speed (HS) machining are reviewed herein. HSM is discussed at length in comparison with conventional machining, as it is possible to drastically improve material removal rate using HSM. In addition to the study of insert materials and tool geometry, other aspects affecting HSM are also discussed. Surface integrity of Inconel 718 obtained through HSM and the recently developed technique of Plasma Enhanced Machining (PEM) is also addressed. 相似文献
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着重介绍了脉冲电化学机械光整加工工艺的特点,光整加工原理;通过实验验证了这种光整加工工艺与电化学机械光整加工工艺相比,有着高效、高表面质量的优点;分析了脉冲电化学机械光整加工工艺的机理;对这种光整加工工艺目前存在的问题及发展前景进行了探讨。 相似文献
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重点介绍了一种简易工装的设计和加工方法,解决了使用普通车床C620进行交叉孔加工的难题。同时,也为同行提供了一定借鉴。 相似文献
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Abstract Nickel-based high temperature alloys have excellent physical properties, which make them ideal for use in the manufacture of aerospace components. However, they exhibit poor machinability. Though conventional machining in industries is currently being carried out using carbide tools, there is little scope for improving the material removal rate. Machining, being a major operation, needs to be improved in order to reduce the throughput time. High Speed Machining (HSM) is a promising technique for increasing productivity in this regard. This paper mostly reviews research and development work in the machining of nickel-based high temperature alloys carried out over the last 15 years with the objective of assessing the present scenario. Emphasis is laid on Inconel 718, which is most commonly used. Both turning and milling operations using conventional and High Speed (HS) machining are reviewed herein. HSM is discussed at length in comparison with conventional machining, as it is possible to drastically improve material removal rate using HSM. In addition to the study of insert materials and tool geometry, other aspects affecting HSM are also discussed. Surface integrity of Inconel 718 obtained through HSM and the recently developed technique of Plasma Enhanced Machining (PEM) is also addressed. 相似文献