螺纹

基于DSP和线阵CCD外螺纹几何参数非接触测量方法研究

Research on Non-contact Measuring Method for Geometric Parameter of External Screw Thread Based on DSP and Linear Array CCD

在AutoCAD中没有直接绘制三维螺旋弹簧、螺纹的方法。

There 's no direct method to draw graphics of 3D spiral spring and screw thread in AutoCAD .

螺纹能牢牢地咬合卡紧。

The screw threads will be able to get a good grip .

CAD中螺纹的两种绘制方法

The both technique of drawing about screw thread in CAD

API螺纹锥度偏差对套管柱使用性能的影响

Effect of API Thread Taper Tolerance on Functional Performance of Casing Pole

按针尖、针杆直径及螺纹的不同，将固定针分为4组（A、B、C、D）。

According to different structures , the pins were classified into 4 groups ( A , B , C , D ) .

基于线阵CCD的油管螺纹非接触测量技术研究

Study on Technologies of Non-contact Tubing Thread Measuring System Based on Linear Array CCD

引入MATLAB的外螺纹轧机轧制系设计专家系统研究

The Expert System of Design Rolling Series of Rollers of External Screw Slant Mill Based on the MATLAB

内螺纹ABS零件的塑料注射模设计

Design of shell of electric shaver plastic injection mould

API圆螺纹的锥度和中径是两个重要的参数。

The taper and pitch diameter of API round thread casing are two of the most important parameters .

EH复合型颈椎螺纹融合器的研制和临床应用

Design and clinical application of the cervical threaded fusion cage of EH composite type

HT高密封性特殊螺纹套管在气井中的应用

Application of specially-threaded casings in natural gas wells

螺纹滚压强化对300M钢螺纹疲劳强度的影响

The Influence of Screw Rolling Strengthening on 300M Steel Screw Fatigue Strength

采用ESC工艺提高硬质合金螺纹刀片耐用度

Increasing Incorruptibility of Cemented Carbide Threading Inserts by ESC Technology

实现了PDC钻头螺纹部分的参数化设计，为进一步的CAE/CAM打下了坚实的基础。

The realizing of parametric design of screw thread of PDC bit makes CAE / CAM possible .

单片机在300M钢内螺纹冷挤压过程监测中的应用

Application of Single Chip Processor in Cold Extrusion of Internal Thread of 300M Steel

GK型等强钢筋锥螺纹接头在水利工程中的应用

Application of the GK-type same-strength conical twisted splices in hydraulic works

常用螺纹插补算法中，很难选取一个恒定的脉冲计数值n，以满足高速切削要求。

The interpolation algorithm in common use can ′ t meet the demands of high speed thread cutting , because it is difficult to find a invariable pulse count value ' n ' .

特别是采用了SA级的镦粗直螺纹钢筋接头，大大简化了梁柱接头的构造，并且方便了施工。

Especially , using the straight thread splices with upset ends ( SA class ) simplified greatly the construction of column beam joint .

API偏梯形螺纹套管内外螺纹机紧联接时，采用控制接箍端面与管体上三角形上螺纹标记之间相对位置的方式进行上螺纹。

When power-tight API trapezoidal threaded casing , the adoption of using triangle marking on casing as relative position to tight casing is a long practice in oilfield .

在应用G38+功能后，使所加工的螺纹精度达到了API标准。

It has save the tube materials and cutting tools . After applied the G38 + functions , the precision of the artifact thread has reached to the API standard .

NPT锥管螺纹量规

NPT tapered tube thread gauges

为了在一个系统中对滚珠丝杠副内螺纹进行无损探测及几何参数测量，提出了基于工业CT技术及图像处理技术的滚珠丝杠副内螺纹的非接触测量方法。

In order to realize non-destruction detection and parameter measurement on internal thread of ball screws in one system , this paper proposed a non-contact measurement method , which was based on image processing technology and industrial CT technology .

方法60例患者采用加压螺纹钉、加压滑动鹅头钉（DHS）治疗股骨粗隆部骨折。

Methods 60 cases of intertrochanter fracture of femur were treated with pressure spiral screws and pressure slipping hip nails .

针对国内、外螺纹检测技术发展的趋势以及相关课题项目的要求，本文提出了一种基于线阵CCD微位移计的非接触式外螺纹检测方法。

According to the development of the testing and measuring technology and the requirement of the project , a non-contact method for displacement of the external screw thread is proposed based on a linear CCD .

低质量流速垂直管屏技术的核心为Benson内螺纹管。

The key issues of low mass flow-speed vertical tube-platen technology lies in its inner threaded Benson tubes .

计算结果表明，带有应力减轻槽的公螺纹具有较小的应力集中，特别是API标准应力减轻槽的应力集中最小，因此抗疲劳性能最佳，建议采用这种应力减轻槽结构。

FEM Results showed that stress of the pin threads with stress-relief grooves is smaller than that of API standard connection without stress-relief grooves and the stress-relief grooves of API standard is best for resistance of fatigue .

目的：观察螺纹状椎间融合器（ThreadedFusionCoge，TFC）治疗不稳定性腰椎滑脱的临床疗效，观察TFC对腰椎前凸的影响。

Objective : To observe the clinical outcome of the degenerative lumbar spondylolisthesis treated by threaded fusion cage ( TFC ) .

颈椎间盘突出症者采用前路钢板固定2例，CBK颈椎Cage固定12例，螺纹状钛合金Cage固定2例。

At cervical disc herniation patient group , titanium Cage was used in 2 cases , CBK in 12 cases , plate in 2 cases .

颈椎空心螺纹内固定器（CHTF）的研制与临床应用

Design and Clinical Application of Cervical Hollow Threaded Fixator