查询词典 screw thread

Jun companies are relying on sophisticated tools in Taiwan's Changhua with the production base has been 20 years in the thread cutting tool manufacturing experience to provide timely to clients, there Jun products include silk thread attack, thread cutter, sheet metal screw hinge (Banya , Pill-ju), dental sheet metal films, the cutting tools have been cut from the blade angle gap with knives and special materials are selected tungsten steel materials, life expectancy than the average 10 times the number of long knives.

公司依托有晙精密工具在台湾彰化设有的生产基地已有二十于年生产制造螺纹切削刀具经验，能够及时提供给客户的有晙产品包括螺纹丝攻、螺纹铣刀、螺纹铰钣、牙钣片，各项切削刀具都经过切刃离隙角处理，且刀具材质均选用特殊钨钢材质，寿命比一般刀具长数十倍。

The design of the device using NC Lathe CA6140 control, part of the main transmission system using AC spindle motor and graded by the pulley driven spindle gearbox, through the inverter and gearbox to achieve sub; Feed System used by stepper motor driven ball screw slowdown after campaign vertical feed system through a gear after the ball screw drive, in the horizontal feed system through two gear-driven ball screw; Tool to automatically transfer tool carrier (4-position), thus achieving automatic tool change; by MCS-51 series 8051 data to be dealt with. from the I / O interface stepper pulse output signal to control the feed rate and itineraries; In order to maintain the function of cutting thread, to the outer end of spindle or other appropriate location loaded pulse generator; Lathe will be transformed into Tailstock manually controlled electric Tailstock.

本设计利用数控装置对CA6140普通车床进行控制，主传动系统部分采用交流调频主轴电动机经带轮及分级齿轮变速箱驱动主轴，通过变频器和齿轮变速箱实现分段无级变速；进给系统采用步进电机通过减速后驱动滚珠丝杠运动，在纵向进给系统中通过一级齿轮减速后驱动滚珠丝杠，在横向进给系统中通过二级齿轮减速驱动滚珠丝杠；刀架改为自动转位刀架从而实现自动换刀；通过MCS-51系列8051单片机对数据进行计算处理，由I/O接口输出步进脉冲信号控制进给速度和行程；为了保持切削螺纹的功能，要在主轴外端或其它适当部位装上脉冲发生器；将车床的手动尾座改造成为可控电动尾座。

With the screw rotation and meshing, the sealed space in the pump suction side evolving to inhalation chamber inclose one of the liquid, and from inhalation of room along the screw axis moved continuously push from client, will be closed in the space continuous discharge of liquid, like a nut in the thread when he was constantly turning the situation to move forward, this is the basic working principle of the screw pump.

随着螺杆的转动和啮合，这些密封空间在泵的吸入端不断形成，将吸入室中的液体封入其中，并自吸入室沿螺杆轴向连续地推移至排出端，将封闭在各空间中的液体不断排出，犹如一螺母在螺纹回转时被不断向前推进的情形那样，这就是螺杆泵的基本工作原理。

The numerical analyses also showed that VCR element has the best distribute mixing effect and normal double-thread screw element take the second place, normal double-thread screw element is the weakest among them.

模拟结果表明：常规双头螺纹元件分散混合能力最强，常规三头螺纹元件次之，VCR元件最弱；而VCR元件分布混合能力最强，常规三头螺纹元件次之，常规双头螺纹元件最弱。

The plastic go down the hopper smoothly and is gripped by the thread of the screw. It is forced to go toward the direction of the gear end along with the rotation of the screw. A mechanical transferring process is formed. During the running of the plastic from the feed port to gear end, a high pressure is formed in the process of plastic curing due to the gradual decreasing of the thread depth and the resistance of filter gauze, splitter plate and gear end. The high pressure helps to press the raw material and improve its heat conductivity performance and the quick melting of the plastic, at the same time, the gradual increasing pressure can help the gas which is among material particles exhausted from the air holes.

在压力升高的同时，塑料一方面被外部加热，另一方面塑料本身在压缩、剪切、搅拌的运动过程中，由于内磨擦力也产生了大量的热，在外力和内力的联合作用下，塑料温度逐渐增高，其物理状态也经历了玻璃态--高弹态--粘流态的变化，一般地说来，在加料段中主要是玻璃态，在螺杆螺纹逐渐减少的中间部分压缩段中，物料主要处于高弹状态，同时也逐渐的熔融，而物料到压缩段后部和化段作用处于粘流态了，这时我们称塑料已完全塑化了，由螺杆推力作用将塑化的塑料定压定量的从机头中挤出。

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。

The process and the features and the main reasons of the improper fatigue fracture of tubing are found, through the macroscopic and the microscopic observation on the tubings fractured face, and stress analysis in the root of tubing thread, that is, tightening up or loosening screw with heavy torque for many times and thread size not accurating to API standard make thread root of dangerous section high stress level.

本文通过对油管断口的宏观和微观形貌的深入观察与分析，获得了有关断裂失效发生和进程方面的各个信息，全面掌握了油管疲劳断裂的征象。

After that, the aforementioned flow field in metering section of the triple-screw extruder with single-thread elements and 45mm pitch has been calculated too for the purpose of comparing the difference of flow fields between the single-thread element and three-thread element.

还以螺距45mm的单头螺纹元件为代表，计算了由单头螺纹元件构成的上述流场，分析、比较螺纹头数对流场的不同影响。

In order to real-timely and accurately measure thread parameters such as thread angle(tooth-type half-angle),screw-pitch,lead,thread height,major diameter,minor diameter,pitch diameter,helix angle etc,and enhance the measuring accuracy,a non-contact thread parameter measuring system based on an array CCD was designed and achieved.

为实时准确地对螺纹的牙型角、螺距、导程、螺纹高度、大径、小径、中径、螺纹升角等参数进行测量，并提高测量精度，设计并实现了基于面阵CCD的螺纹参数非接触测量系统。

2DIE-4 BLOW SCREW HEAD MAKING MACHINE,3DIE-3 BLOW SCREW HEAD MAKING MACHINE,2DIE-2 BLOW SCREW HEAD MAKING MACHINE,3DIE-6 BLOW SCREW HEAD MAKING MACHINE,BLIND RIVET HEADING MACHINE,HOLLOW HEADING MACHINE,THREAD ROLLING MACHINE

二模四冲多冲程螺丝打头机、三模三冲多冲程螺丝打头机、二模二冲多冲程螺丝打头机、三模六冲多冲程螺丝打头机、拉钉打头机、空心打头机、搓牙机，二模四冲冷镦机，冷镦机，打头机。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。