tool joint

Eleven mare modes of tool joint failures are summarized.

综述了石油钻杆接头失效的十一种主要形式.

This article proves that rolling operation can largely enhance fatigue strength through the research on the cold rolling operation of thread root of the drilling tool joint.

通过石油井下钻具接头螺纹冷滚压工艺的研究可以证明冷滚压可大大地提高接头的疲劳强度。

Research On Identification Of Damping Coefficient Of Machine Tool's Joint-Plane

机床结合面阻尼系数识别研究

The general technique can be used as the creative tool for the government, and its main cooperation development method is the Research Joint Venture ( RJV).

共性技术可以作为政府的一种重要创新工具，其主要合作研发方式是研发联合体（RJV）。

Applying the method of D-H to establish the relationship between each joint coordinate system and tool coordinate system.

用D-H描述方法建立各关节坐标系及工具坐标系之间的关系。

In this paper, the fabrication of intermediate joint, selection of crimping tool, construction procedure and difficult point in technique are introduced in detail.

本文详细介绍了中间接头的制作，压接工具的选择，以及其施工方法与技术难点。

Influence of shoulder-runout distance of tool joint on life of joint

钻杆接头螺纹退刀尺寸对接头寿命的影响

Meanwhile, the design of wrist joint mechanism makes tool system could adapt to the curvature changes of free-form surface.

同时，腕关节机构的设计，使得工具系统可以适应自由曲面曲率的变化。