螺纹

From fixed-size systems for high volume inspection to range adjustable systems for maximum versatility, standard Johnson Gage Inspection Systems are ideally suited to your application, UN, UNJ, Metric, NPT, Acme, Buttress as well as other thread profiles are easily incorporated into the basic design.

从适用于大批量检测的固定尺寸螺纹量仪到具有最大多用途的范围可调的量仪，章森螺纹测量仪将会是非常完美的满足您的测量需求 UN ， UNJ ， Metric，NPT，Acme，Buttress 和其它的螺纹轮廓将会非常容易与基础设计整合在一起。

Through investigation and analysis to several wells with CBL VDL and CCL. it is found that there are different characteristics in well logging images for the joint parts of API casing with buttress thread coupling, casing with special thread coupling and connecting casing with special thread. Abnormal CCL and CBL curves and VDL waveforms indicate casing failure position and damage pattern.

经过对多口井CBL、VDL和CCL套管测井结果进行了调查研究和分析，发现API接箍式偏梯形螺纹接头套管、接箍式特殊螺纹接头套管和直连型特殊螺纹接头套管接头部位在测井图像中均有不同各自的特征，不正常的CCL和CBL曲线和VDL波形位置表明了套管损坏位置和损坏形式。

The taper of the pipe screws has notable influence on the loading distribution along screws, so it is possible to improve load-bearing capacity of the screw coupling by selecting a suitable taper.

文中采用虚拟接触载荷法和位移法研究了螺纹管连接中螺纹齿根部带半椭圆表面裂纹时应力强度因子的计算，在此基础上，提出了螺纹连接简化计算模型。

In design of movable forming machine of pipe thread,adopt that there is not shaft redactor,cutting tool rotate,pipe axial feed operate mode.

在可移式管螺纹成型机设计中，采用了无轴式结构的减速器和螺纹梳刀旋转、管件轴向进给的工作方式，实现非直线圆管螺纹的成型加工。

These features, along with high-precision processing technologies have helped to miniaturise these products. The micropump is 6.0mm in diameter and 24.0mm in length, the microvalve measures 3.5mm in diameter and 10.3mm in length. The products are small but ensure high functionality by incorporating fluid, structure and magnetic field analysis simulations. Development will contribute to enhanced miniaturisation, an indispensable prerequisite for portable device fuel cells. Through the optimal design of diaphragm operations, valve configuration to prevent fluid backflow, materials and layout, Alps has achieved the effective control of larger amounts of fluid in a smaller chassis for its micropump. The unit also employs low-voltage electromagnetic drive systems, which contribute to easy control and fuel cell system engineering.

这 2002：机床，入世是挑战更是机遇专家指出要加大我国数控机床研发力度加快普及型数控机床的发展漫话中国机床制造业的服务竞争中国铣床和加工中心市场的现状和展望国内外车床的技术水平和发展方向世界加工中心的生产、需求和发展动向国内外机床发展趋势世界数控系统发展趋势切削加工技术和数控机床的发展现代机床产品技术发展趋势我国高速加工技术现状及发展趋势利用先进制造技术提升汽车活塞加工水平瓶盖及瓶口模具上特殊螺纹的数控车削深孔的螺纹加工数控车床螺纹切削方法分析与应用磨削蜗杆砂轮的修整精密零件多台阶面磨削的新方法曲轴连杆颈的跟踪磨削工艺

M14 and M5/8 are female thread. Gas thread is male thread.

内螺纹分为：M14和M5/8，外螺纹是管螺纹。

Threaded pipe connector is commonly used in jointing pipelines which are found in the high pressure liquid and gas transportation. At the thread joints, the stresses and strains are easily raised and weaken the strength of pipe systems due to such kind of stress concentration effect.

管螺纹接头常用於管件接合，往往需输送高压液体及气体，在螺纹连接处会产生应力集中而使连接强度相对於其他部位较为脆弱，故螺纹连接处之强度成为整体结构是否失效的重要关键。

The main products are: thread cutting tools: the machine tap, pipe thread tap, nut tap, tap spiral groove, spiral pointed tap tap ladder, hand tap, tap extrusion, screw tap sets, L-tap, tap straight groove, roll teeth as well as increase the tap tap, tap lengthened and undertake kinds of non-standard and special-shaped screw instrument.

主要产品为：螺纹刀具：各机用丝锥、管螺纹丝锥、螺母丝锥、螺旋槽丝锥、螺尖丝锥梯形丝锥、手用丝锥、挤压丝锥、螺套丝锥、左旋丝锥、直槽丝锥、滚牙丝锥以及各种加大丝锥、加长丝锥，并承接各种非标及异型螺纹工具。

According to the requests of API connecting casing pole to connecting intensity and sealed capability,the paper analyzes the effect of taper tolerance of pipe external thread and coupling internal thread on using properties of casing pole.

根据API螺纹连接套管柱对连接强度和密封性能的要求，分析了管子外螺纹与接箍内螺纹的锥度偏差对套管柱使用性能的影响，提出锥度偏差应在API标准要求的基础上加以内控，将极限公差缩小至机械加工允许的范围内，是提高石油套管柱使用性能的有效途径。

The methods of chip-breaking in machining pipe thread were researched deeply, which are classified into two categories: the methods acting on tools and adding auxiliary devices for chip-breaking. The principle of work, the technical characteristics, the advantages and disadvantages, and so on were analyzed, compared and summarized, and the following research directions were also pointed out.

摘 要：深入研究了管螺纹加工的断屑方法，将目前管螺纹加工的断屑方法分为两大类——作用于刀具上的方法和增加断屑辅助装置的方法，并对各种方法的工作原理、技术特点及优缺点等进行了全面的分析、比较和总结，指出了管螺纹加工断屑方法仍然存在的问题和下一步的研究方向。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失