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Random Directive Vector Dimension Chain and Its Application in Machine Tool Design and Manufacture

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Aiming at the low efficiency of the present processing of the light truck rear axle, the controlling system based on PLC in machine tool for processing the tri-principal- axis hole was described and its working principle and running characteristics was introduced.

针对汽车后桥壳的三主轴孔加工效率太低的现状，采用PLC对该加工机床的控制系统进行了设计，并对其工作原理及特点进行了介绍。

Whose content is pursued including using the AutoCAD software to draw out a part , is pursue the parametric choice carrying out analysis , blank choice , electricity to the part, the machine tool choice workpiece dress gripping and rectifying CAXA line cutting programming , the part treating and so on, reaches the scheme knowing well that a part processes process from blank to finished product's, and processes the problem should pay attention to in process and solving thereby

本次毕业设计的内容是电火花线切割样件加工，主要是对零件凹角和尖角进行电火花线切割加工，其内容包括使用AutoCAD软件绘制出零件图、对零件图进行分析、毛坯的选择、电参数的选择、电极丝的选择、机床的选择、工件的选择、工件的安装及校正、CAXA线切割编程、零件的加工等，从而达到熟悉一个零件从毛坯到成品的加工过程，以及在加工过程中应注意的问题及解决方案。

Whose content is pursuedincluding using the AutoCAD software to draw out a part , is pursuethe parametric choice carrying out analysis , blank choice ,electricity to the part, the machine tool choice workpiece dressgripping and rectifying CAXA line cutting programming , the parttreating and so on, reaches the scheme knowing well that a partprocesses process from blank to finished product's, and processesthe problem should pay attention to in process and solvingthereby

摘要本次毕业设计的内容是电火花线切割样件加工，主要是对零件凹角和尖角进行电火花线切割加工，其内容包括使用AutoCAD软件绘制出零件图、对零件图进行分析、毛坯的选择、电参数的选择、电极丝的选择、机床的选择、工件的选择、工件的安装及校正、CAXA线切割编程、零件的加工等，从而达到熟悉一个零件从毛坯到成品的加工过程，以及在加工过程中应注意的问题及解决方案。

Development of final , subsequently rectilinear electric motor, I have been described an once simplely in by system in numerical control machine tool moving forward.

最后，随着直线电动机的发展，我在数控机床的进给系统中简单的描述了一下。

Combined machine tool s that the flexible refitment of machines instead ofpurcbasing a new one with identical function can save investment of 130 000 yuan each.

通过对一批传统组合机床进行柔性化改造工程的技术经济分析，表明进行柔性化改造的设备比购置同样功能传统机床节约投资131元／台，10年内平均节约费用72718.8元，本文涉及的计算方法简单，而且通用性强，为传统组合机床柔性化改造提供了技术经济分析的依据。

5 Years working experience as customer service engineer in elevator, machine tool, refrigeratory or other related area.

有3-5年电梯，机床，冷库及其他相关领域客户服务或维修工作经验。

The main research content is: Using the experimental of cutting force and roughness of high speed face milling cutter and high speed end milling cutter mill aluminium alloy and cast iron, analyze the rules of the high speed milling velocity, feed rate per tooth, milling depth and milling width to high speed processing. Use multiple linear regression method, set up surface roughness and the cutting force fluctuation models. Certify the regression model notability, and provide a reliable guarantee for the accuracy of function optimization. Based on the targets of productivity, manufacturing cost, surface roughness, cutting force fluctuation optimization model, according to research of the high speed milling parameters selecting restrict of work piece, machine, tool and safety, set up high speed milling parameters multi-object optimization system.

本文以已有的高速铣削机理及高速刀具技术研究成果为基础，结合高速铣削试验，进行了基于遗传算法的高速铣削参数优化研究与系统开发，主要的研究内容为：通过高速面铣刀和高速立铣刀加工铝合金和铸铁等材料的切削力和表面粗糙度试验，进行了铣削速度、每齿进给量、铣削深度和铣削宽度对高速铣削加工过程影响的研究；采用多元线形回归的方法，建立了切削力及其振幅和表面粗糙度模型，并对模型的显著性进行验证，为高速铣削参数优化模型的建立奠定了基础。

The German machine tool construction industry has, as it were, been in reverse gear since the middle of 2008, so that it will be practically impossible even to meet the minus 15 per cent production figure projected for the current year.

德国机床工业的建设，因为它是，在开倒车自2008年中期，因此，这将是几乎不可能，甚至达到百分之零下15条生产数字本年度的预计。

Focus on a novel virtual axis machine tool for free form surfaces polishing,using Lagrange equation this paper establishes a dynamics model of space rigid flexible coupling multibody systems.

针对一种用于研磨自由曲面的新型虚拟轴机床，建立基于Lagrange方程的空间刚-柔耦合动力学模型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。