导螺杆

The mechanism is composed of two ball screws, U-type linear rails, linear bearings and flexible couplings. The permanent magnetic direct current motors are used as actuators. The rotary encoder is used to measure the angular position of the DC motor. The digital controller is implemented on the personal computer and a motion control card (EPCIO-6000). The objective of this thesis is to realize precise positioning control using a real-time motion control system on an X-Y table.

机械结构包括有滚珠导螺杆、U型线性滑轨组、线性轴承及可挠性连轴器等；致动器是采用永磁式直流马达(permanent magnetic direct current motor)；感测器是使用光学式旋转型编码器来量测马达旋转的角度；控制器则是以个人电脑为控制核心，搭配运动控制轴卡(EPCIO-6000)所组成。

Therefore, in the case of inhalation are poor, should choose a small lead of the twin-screw pump.

因此在吸入条件不好的情况下，宜选择小导程的双螺杆泵。

An injection mechanism for an injection molding machine, including a front plate carrying an injection cylinder; a guide rod arranged fixedly relative to the front plate and having a longitudinal guiding axis; a movable plate arranged movably relative to the front plate along the guiding axis and carrying an injection screw; and a rear plate arranged at a location opposite to the front plate with the movable plate disposed therebetween.

一用于注射成型机的注射机构，包括：一支承压射缸的前板；一相对于所述前板固定布置并限定出一纵向导轴的导杆；一沿所述导轴相对于前板可动布置并支承注射螺杆的可动板；一布置在与所述前板相对位置上的后板，可动板布置在它们之间。

Therefore, in order to screw suction port separated from the oil discharge screw thread section is greater than the length of at least one lead.

因此，为了使螺杆能吸、排油口分隔开来，螺杆的螺纹段的长度至少要大于一个导程。

Therefore, in order to enable the screw to smoke, Pai oil separated from the mouth, screw thread length is greater than at least one lead.

因此，为了使螺杆能吸、排油口分隔开来，螺杆的螺纹段的长度至少要大于一个导程。

The product mainly serves the die making…The main product includes: The drift, floats rises the tree top/roof bar, the request needle, the flat thimble, the guide pillar, the guide sleeve, the auxiliary/ball bearing guidance, the independent guide pillar, the pould frame, the ball bearing wrap, the date chapter, the punch press safety/sheet iron separator, the counter, the mold spring, the filter, the contour sleeve, the feather piece, hit the screw, the roof bar, Si Tong, the runner wrap, silver steel, the screw rod, the nut, the engine bed appendix, the anaerobic glue water, the rust-preventing agent/release agent, the side lathe tool, a Yuan lathe tool, the flat lathe tool, the tipped tool, the grinder to approve the gentleman the milling cutter, to drill ju, the screw die, the thread chaser, the spanner, the polishing polish thing, the thread plug gage, the resin shutter, the suspension loop, wash the slate pencil, the cowhide wheelhead, the rubber wheelhead, the steel figure, the wool wheelhead, the sponge the wheelhead, the red lead, the emery paste, the province copper paste, the oilstone, the diamond attrition fat stone, to divide the stick, in six jiao spanners, the measuring instrument, to drill the cartridge, to frustrate the knife, the knife handle, the knife grain, to stop the cock, the molybdenum silk, the dresser, the cutting piece and so on nearly hundred kind of mold hardware fitting.

产品主要服务于模具制造…主要产品有：冲头、浮升梢/顶杆、托针、扁顶针、导柱、导套、辅助器/滚珠导向件、独立导柱、模架、滚珠套、日期章、冲床安全器/铁板分离器、计数器、模具弹簧、过滤器，等高套筒、销钉、塞打螺丝、顶杆、司筒、浇口套、银钢支、螺杆、螺母、机床附件、厌氧胶水、防锈剂/脱模剂、方车刀、元车刀、扁车刀、焊接车刀、磨床批士铣刀、钻咀、丝攻、板牙、扳手、抛光打磨用品、螺纹塞规、树脂开闭器、吊环、洗石笔、牛皮磨头、橡胶磨头、钢字码、羊毛磨头、海棉磨头、红丹、钢砂膏、省铜膏、油石、钻石研磨膏油石、分中棒、内六角扳手、量具、钻夹头、挫刀、刀把、刀粒、止水栓、钼丝、打磨机、切割片等近百种模具五金配件。

The ball-screw mechanism is also called a lead screw.

这个ball-screw机制也被称为导螺杆。

Most of the developing X-Y tables applied Ball screw-driven table system or piezo-ceramic linear motor by taking the advantages of carrying heavy loads. However, their cost are very high in contrast to the proposed architecture. In some particular application fields. Carrying heavy loads is not the main requirement for the X-Y table, such as organic cell inspection, optical fiber alignment, nano-material research, ect. Taking this idea as a premise, if we could able to create a precise positioning X-Y table with very low cost, we will be able to achieve the extremely high commercial value and highly competitive ability.

X-Y精密定位平台的开发，不外乎线性马达或压电陶瓷马达搭配导螺杆或其它机构所组成，其优点是可以承载较重之待测物体，缺点是重量大且价格昂贵，在许多应用上并不要求测试平台拥有太大的荷重能力，如生物医学诊断及检测，生物晶片开发及检测，光纤校准，奈米材料研发，奈米量测及精密全平面扫描等等，如果以此为前提，能以极低之成本创造出高精密定位之X-Y平台，将会有极高之商业价值及极大之竞争力。

Therefore, in order to enable the screw to smoke, Pai oil separated from the mouth, the screw thread section of the length of at least larger than a lead.

因此，为了使螺杆能吸、排油口分隔开来，螺杆的螺纹段的长度至少要大于一个导程。从上述工作原理可以看出，螺杆泵有以下优点

Therefore, in order to enable the screw to smoke, Pai oil separated from the mouth, screw thread length is greater than at least one lead.

因而，替了使螺杆能呼、排油口合隔启往，螺杆的螺纹段的少度至多要小于一个导程。

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