工件

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。

Though the gyration and retroflexion of the workbench, the welding positioner can make the welding line to an ideal position, which can improve the quality of the welded joint, reduce welder's workload. It is ideal equipment especially fit to weld the kinds of workpiece, just like the shaft, tray, canister, and so on.

焊接变位机可水平翻转角度，通过工作台的回转及翻转运动使工件上焊缝处于最理想的位置进行焊接，从而大大提高焊缝质量，减轻焊工劳动强度，尤其是适合焊接各种轴类、盘类、筒体等回转工件的理想设备。

The effect of reverse current is not just to clean away the oxidic film on the surface of aluminium plates, and what is more, to heat the workpiece.

反极性电流的作用不只是清理工件正面的氧化膜，其更重要的作用是加热工件。

On the basis of kinematics and geometry principle, a mathematical model for the crank rocker arm mechanism was established.

从运动学和几何学原理出发，建立了曲柄摇杆机构的数学模型，得出了工件中心点的瞬时速度和运动轨迹，并开发了相应的计算机动态仿真软件，以图形的形式显示了工件中心点运动轨迹曲线以及瞬时速度曲线。

Based on the hierarchical express of tool and workpiece, overlapping test between OBBs and octants of the surfaces octree with the separation axis theorem is implemented.

在对主轴头、刀具体和被加工工件进行层次化近似表示的基础上，运用分离轴理论实现了对主轴头及刀具体包围盒和工件八叉树节点之间的相交测试。

Abrasive jet machining is a kind of special machining method in which gaseity-solid mixture is formed by mingling high-pressure air or other gas with abrasives. Applied by specially-designed nozzle, these particles impact and erode workpiece so as to remove materials.

磨料喷射加工是利用微细磨料与高压气体混合形成的高速气-固两相流，通过专门设计的喷嘴射向工件，依靠磨料的高速冲击和冲刷作用而实现去除工件表面材料的一种加工方法。

The cause occurred the burr in the external surface of spinning tube was analyzed.

通过对圆筒旋压过程工件外表面出现有规律状的毛刺产生的原因分析，提出了加工高精度的旋压毛坯是旋压高精度工件必要条件。

Ultrasonic cleaning is a good fit for a wide range of applications, from removing swarf and grinding and polishing residue to treating parts covered in oil, grease, or layers of paint.

超声清洗是工业领域一种广泛应用的新方法，可以去除工件表面的磨削，研磨，抛光后表面残留的碎屑，去除工件表面残留的油污，甚至可以去除油漆层。

The paper analyzed the motion principle of an end-face lapping machine for an optical fibre conneetor,and deduced the expressions for the workpiece′s motion path in relation to its lapping plate and the motion path vise versa,both of which,as shown by Eqs(5) and(6) in the full paper,are trochoid .

推导出工件相对于研磨盘的运动轨迹S1和研磨盘相对于工件的运动轨迹S2的表达式，得出S1、S2均为次摆线，分析了轨迹随相关参数的变化规律。

According to the request of construction features, processing spot, size precision, surface roughness and productivity that diesel engine air cylinder, sets the machine tool for single location horizontal type modular machine tool. Considered to the factor of the size precision, surface roughness, scrap removes and productivity and so on of the work piece, selects the Hard alloy not grind type surface milling cutter.

根据柴油机气缸体的结构特点、加工部位、尺寸精度、表面粗糙度及生产率等要求，确定该机床为单工位卧式组合机床；考虑工件尺寸精度，表面粗糙度，切屑的排除及生产率等因素，选用硬质合金不重磨式面铣刀；根据工件的尺寸、特点及其材料选择切削用量；然后，再经过切削用量来确定组合机床的通用部件；最后进行组合机床的总体设计。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。