零件

Carry on structure analysis to the spare parts first, understand its structure characteristics to choose suitable semi-finished product and the semi-finished product manufacturing of the reasonable a craft thus;Then the technique request of spare parts carries on analysis, understanding it each process superficial accuracy grade and the surface rough degree, make it process the fixed position in the process and clip a tight way in assurance inside the scope of economic accuracy, draw up the machine of spare parts to process craft process thus and further, choose each work preface to process equipments and craft material, the assurance slices to pare dosage and craft size, computing the man-hour of each work preface settle sum.

首先对零件进行结构分析，了解其结构特点从而选择合适的毛坯以及合理的毛坯制造工艺；再零件的技术要求进行分析，了解其各加工表面的精度等级以及表面粗糙度，使其在经济精度的范围内确定加工过程中的定位和夹紧方式，从而进一步拟订零件的机械加工工艺过程，选择各工序加工设备以及工艺装备，确定切削用量以及工艺尺寸，计算各工序的工时定额。

In the CAD system for progressive dies, the method is introduced to automatically generate geometric models of stampings through inputting the product drawings by AutoCAD and picking-up the entity information from DXF files and programming with ObjectARX and C＋＋ language, at the same time, generating algorithm of close contour lines and unidirectional chain-table structure are used to express the models of stampings, the class and direct judgment of contour lines are realized and the entity existing side is judged by analytical geometry, which efficiently solves the problem of automatic input of drawings of stamping and providing information of process planning and mold design.

在级进模CAD系统中，将产品的图形信息以AutoCAD直接绘图形式输入到计算机中，从AutoCAD的图形交换文件中提取信息，采用面向对象的二次开发工具ObjectARX和C＋＋语言编写接口程序，并通过封闭轮廓的生成算法自动生成冲裁零件的几何模型，且用单向链表的形式加以表达，同时对冲裁零件图形的轮廓进行分类与走向判定，采用简单的解析几何方法对实体存在侧进行判定，有效地实现了零件图形的自动输入，为级进模CAD系统的工艺计算和模具工作部分的设计等提供了必要的信息。

And linking the principle of choosing computer visual inspection system hardware, the paper constructs hardware structure of visual inspection system, and develops measure software of thread geometry parameter and applies all above research results to quantificationally measure geometry parameters such as half angle of thread, coning and pitch of conical joint screw thread of graphite electrode, at last educes influencing expressions of the shelter of lead angle to half angle of thread change, it establishes theory base for error amendment.

论述了微小零件尺寸及形状误差的常用测量方法，提出了将视觉检测技术应用到微小零件尺寸及形状误差的测量中，构建了视觉检测系统的硬件结构，开发了相应的测量软件，应用第三章介绍的各种边缘检测方法对传动用滚子链链板进行了边缘检测对比实验，找出适合的边缘检测方法，并应用上述各章的研究结果对传动用滚子链链板节距以及圆形零件的圆度误差进行了测量。

The system could complete parameterized design of parts and die parts drawing, the virtual assemkbly of die and die assembly drawing, and animated die drawing.

并基于SolidEdge平台，采用参数设计技术和VisualBasic工具，开发了一个圆筒形零件拉深模具系统，该系统能够全参数化进行零件设计并生成零件图、模具虚拟安装并生成模具装配图。

Numerical control lathe have following outstanding superiority than traditional lathe include:Can process out complicated parts, such as the curve coming out in traditional machine tooling, curved surface,etc;Because computer have superb operation ability is can instantaneous to calculate out each coordinate axis instantaneous amount of exercise that should move accurate, So can compound into the complicated curve or curved shttp://www.51lun-wen.cnurface ;Can realize automation that process is and flexible automation, so efficiency constant traditional lathe raises by 3-7 times;Because the computer has memory and stores ability ,Can carry out automatically according to the order that the procedure stipulates,so realize automation;Proceshttp://www.51lun-wen.cnng precision of part high, size disperse degree light, make and assemble easy, No longer need to" repair the damaged parts of a machine and supply replacements";Can realize the concentration of many processes,have many kinds of self-containment functions,such as autoalarm, controlling, automatic compensation automatically,etc;Therefore can realize that nobody guards and processes for a long time.

机床数控化改造可以加工出传统机床加工不出来的曲线、曲面等复杂的零件。数控机床比传统机床有以下突出的优越性，由于计算机可以瞬时准确地计算出每个坐标轴瞬时应该运动的运动量，因此可以复合成复杂的曲线或曲面；可以实现加工的自动化，而且是柔性自动化 http：//www.51lun-wen.cn ，从而效率可比传统机床提高3～7倍；由于计算机有记忆和存储能力，可以将输入的程序记住和存储下来，然后按程序规定的顺序自动去执行；加工零件的精度高，尺寸分散度小，使装配容易，不再需要"修配"；可实现多工序的集中，减少零件在机床间的频繁搬运；拥有自动报警、自动监控、自动补偿等多种自律功能，因而可实现长时间无人看管加工。

Moreover, this paper emphasized to introduce the design of mould structure and mould parts, such as: feed system; guide outfit; ejection outfit; cooling system; the structure design, size calculation, processing program and so on .

重点对模具的结构设计和成型零件设计（如：浇注系统，导向机构及脱模机构，冷却系统，成型零件的结构设计，成型零件的尺寸计算，成型零件的加工程序等）过程作了详细介绍。

Moreover, this paper emphasized to introduce the design of mould structure and mould parts, such as: feed system; guide outfit; ejection outfit; cooling system; the structure design, size calculation, processing technology and CNC program of mould part, etc.

重点对模具的结构设计和成型零件设计（如：浇注系统、导向机构及脱模机构、冷却系统、成型零件的结构设计、成型零件的尺寸计算、成型零件的加工工艺及数控加工程序等）过程作了详细介绍。

Parts of the structure of a certain complexity, there are two spindle hole, and a large flat bottom, so parts of rough forming a gray iron foundry, cabinet parts is a typical parts, so its processing procedures and fixture design also has typical .

该零件结构有一定复杂性，有两个主轴孔，并且有底面的大平面，因此零件毛坯采用灰铸铁铸造成形，箱体零件是一种典型零件，因此其加工工艺规程和夹具设计也具有典型性。

What this invention has function of take a breath one kind publicly is wall hung inhaler, include: Noumenon, air suction opening, filter component, send fan, outside air blowhole, bypass, fender and eduction mouth; Outside air blowhole is formed go up in noumenon; Bypass is formed at the back of what the component filters inside noumenon, form outside air to flow to the passageway that sends fan directly; Fender setting is filtering on the face of have a common boundary of component and bypass, its position prep above filters component; Eduction degree of lip-rounding is become in noumenal before the bottom of face plate.

本发现亮相了一类具备换气效能的璧挂式空气air筛选器，包含：本体、吸进口、筛选零件、送扇子、外面空气air通气眼、旁路、档扳和排岀口；外面空气air通气眼产生在本体上；旁路产生在本身体之内筛选零件的后头，型成外面空气air直接流向送扇子的路线；档扳设定在筛选零件与旁路的边界面上，其位置高于筛选零件；排岀口产生在本体的前头扳的下部。

Powder metallurgy products / PIM metal powder injection molding / precision casting / structural parts: Stainless steel powder metallurgy structural parts, powder metallurgy iron-based, powder metallurgy copper, stainless steel casting, metal powder injection molding MIM structural components, precision steel casting; cam , metal buttons, spherical oil bearings, bushings, bushing; copier parts, printer parts, automotive, electronics, office equipment, medical equipment, environmental protection and filtration equipment and other machinery, electrical appliances, electric / pneumatic products in the precision parts; products used within the industry shaped metal structure parts, non-standard parts, hardware accessories.

粉末冶金制品/PIM金属粉末注射成型/精密铸件/结构零件：不锈钢粉末冶金结构件、粉末冶金铁基、粉末冶金铜基、不锈钢压铸件、金属粉末射出成形MIM结构零件、精密铸钢件；凸轮、金属按键、球形含油轴承、轴套、衬套；复印机配件、打印机零件、汽车、电机、办公器械、医疗器械、环保过滤设备及其他各种机械、电器、电/气动产品内的精密零件；各行业产品内部用的异形金属结构零部件、非标准件、五金配件。

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。