螺纹

Tolerances represent the highest commercial grade of accuracy and workmanship, and are specified for thread setting gages; X tolerances are larger than W tolerances and are used for product inspection gages.

公差是为螺纹调节规设定的，代表了精确程度及工艺方面的最好商业等级。X公差比W公差要大，用于产品检验量规。

To reduce stress concentration and bending stress on the screw joint, and decrease vibration transmission through the pipes, spherical joint was used to connect lifting pipes to replace screwed connection in lifting pipes of deep-sea mining system.

摘 要：为了减弱深海采矿系统中扬矿管道螺纹连接处的应力集中与弯曲应力，并减小振动在管壁内的传递，采用球铰接头对扬矿硬管进行连接，替代原有的螺纹连接。

It is shown that the contact interaction enables bottom drillstring to whirl backward, and then an alternate bending stress with higher frequency is produced. So the drillstring fatigue failure could be accelerated. At the same time, a quite strong wallop force of high frequency is produced on the contacting point, and the contacting zone is next to the screw coupling of drill collars. It will easily result in the failure of screw couplings. The research results provide theoretical basis for the prevention of drillstring failure.

研究表明，下部钻柱与井壁的碰摩作用使下部钻柱反向涡动，产生高频的交变弯曲应力，会加速下部钻柱疲劳破坏；下部钻柱与井壁接触点处存在较大的高频冲击力，并且接触区域靠近钻铤螺纹联结处，更容易诱发螺纹联结处失效，该研究成果可为预防钻柱失效提供理论依据。

This thesis combination machine for design processing many stalks the box ten screw threads of rights the bore bed.

车床主轴箱箱体右侧10-M8螺纹底孔组合钻床设计摘要：本论文为加工主轴箱箱体右侧十个螺纹底孔的组合钻床的设计。

Bolt with full screw threads and equal strength is a new type of bolt.

全螺纹等强度锚杆是一种新型锚杆，其最主要优点是杆体不需二次加工紧固螺纹，不仅简化了生产工艺，还实现了杆体全长等强，克服了常规锚杆受拉时产生应力集中区而使杆体强度降低的缺点，另外，较大的螺距可使锚杆安装速度提高。

2 The provisions of valve flap stent thrust nut in space; 4.3 will bring more than ejector stem components, and into the valve flap bracket, now can adjust screw ring on the injector; adjustment ring discharge pipe may be twisted too high in case of this case, when the valve assembly after the valve flap in contact with its seat before the valve flap seat will have an additional load on the adjustment ring edge, in order to avoid this from happening, should enable the adjustment ring hole just below the injector thread, through which holes should not be able to see thread.

4.2 规定阀瓣支架与止推螺母中的间隙； 4.3 将喷射器提起超过阀杆组件，并放到阀瓣支架上，现在可以把调节环拧在喷射器上；调节环可能在排放管上拧得太高，如遇此情况，当阀门组装后，在阀瓣与其座相接触前，阀瓣座将加载荷于调节环的边上，为了避免此情况的发生，应使调节环上的孔正好低于喷射器的螺纹，通过这些孔应不能看到螺纹。

Rational new method for checking ring gauge is put forward in this paper. For pitch less than 0.5 mm check plug is used to inspect size on virtual effective diameter and simple effective diameter, but for pitch over 0.5 mm, check plug is only used to inspect size on virtual effective diameter, simple effective diameter is measured by double ball.

提出了对于螺距不大于0.5 mm的螺纹环规，采用校对规检验作用中径及单一中径；而对于螺距大于0.5 mm的螺纹环规，则采用校对规检验作用中径，双球法测量单一中径。

Rational new method for checking ring gauge is put forward in this paper. For pitch less than 0.5 mm check plug is used to inspect size on virtual effective diameter and simple effective diameter, but for pitch over 0.5 mm, check plug is only used to inspect size on virtual effective diameter, simple effective diameter is measured by double ball.

提出了对于螺距不大于0.5 mm的螺纹环规，采用校对规检验效用中径及单一中径；而对于螺距大于0.5 mm的螺纹环规，则采用校对规检验效用中径，双球法测量单一中径。

Number of loaded circuits DN Value Preload Method for Providing a Preload Applied preload 3 row 1.00 turns 50000 Yes Constant Pressure Preload 1110 Type of guide Shaft process method Ball cage Splined portion Hollow shaft Ball Rolled None None None Recommended support unit on the Fixed Side type Recommended support unit on the Supported Side type Types of Nuts Threading direction Spacer ball BK30,FK30 BF30, FF30 Simple Nut Right-hand None Rigi...

载荷钢球圈列数 DN值预压预压方法预压负荷 3列 1.00圈 50000 有定压预压 345 导轨型号丝杠轴加工方式球保持器轴的花键部分中空轴滚珠滚轧无无无轴承支撑座固定侧的推荐方式轴承支撑座支撑侧的推荐方式螺母种类螺纹方向间隔钢球 BK15，BK17，BK20，EK15，EK20，FK15，FK20 BF15， BF17， BF20， EF15， EF20， FF15， FF20 简易螺帽右螺纹无轴方向刚性

The male and female joint confines the gasket O.D and I.D.

这种外螺纹和内螺纹连接限制了垫圈的外径和内径。

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