滚珠

The procedure,method of the lectotype and checking calculation of the nut set of ball screw in numerical control reforming of longitudinal feed system are expounded,which can be used as a reference of numerical control transformation machine.

阐述了该车床纵向进给系统改造中的滚珠丝杠副的选型和验算的步骤及方法，可为机床数控化改造提供一种参考。

Produced mainly engraving machine models: JW-3030 JW-3636 JW-6090 JW-1212 JW-1215 JW-1218 JW-1325 Granville fine line engraving machine are imported high-precision ball screws Consumers gap, the choice of high quality aluminum alloy body Casting from the overall, the same type of rigid good.

公司生产雕刻机型号主要有：JW-3030 JW-3636 JW-6090 JW-1212 JW-1215 JW-1218 JW-1325精威系列雕刻机均采用进口高精度消隙滚珠丝杠，机体选用优质铝合金整体铸造而成，刚性好不变型。

This paper mainly discusses the machine in the process of technological transformation of the transmission device, the motor-driven choice, The choice of ball screw relevant aspects of the analysis, demonstration, the adoption and application of a series of process.

本文主要论述了该机床在技术改造过程中对传动装置，驱动电机的选择，滚珠丝杠的选择等相关方面的分析，论证，采纳与运用的一系列过程。

Mechanical parts of the original target ordinary screw, the drive motor and control components of the transformation, the transformation of the system after a stepper motor, ball screws and other components, form a open-loop control system.

机械部分主要针对原普通丝杠、驱动元件和控制电机的改造，改造后的系统采用了步进电机，滚珠丝杠等元件，构成了一个开环控制系统。

Eventually evolution on a ball-bearing planet would mold everything into a single, massive, ultradistributed planetwide superorganism.

最后，滚珠般亮滑的星球上的进化会将所有的事物一股脑地塑造成一个全球范围内分布无度的、单一、巨大的超个体。

Two-axis machine tool feed system uses a typical stepper motor-driven ball screw transmission mode, in the saddle and the skateboard with bed bed bed between the saddle and the sliding surface of the rail plate affixed to TSF, sliding friction coefficient is very small, there is help to improve machine performance and production efficiency fast response.

机床两轴进给系统采用步进电机驱动滚珠丝杠的典型传动方式，在滑板与床鞍及床鞍与床身之间的滑动面处贴有TSF导轨板，滑动磨擦系数非常小，有助于提高了机床的快速响应性能及生产效率。

Net seam using servo motor driven ball screw, Tuosi plate connected to the rail line, according to instructions sliding, net seam gap arbitrarily adjusted according to actual situation, with the screen blocking the production of mining and petroleum chemical industry pharmaceutical tablets filter mesh, filter the ideal network management device.

网缝采用伺服电机带动滚珠丝杠、托丝盘连接在直线导轨上，按指令滑动，网缝间隙根据实际情况任意调节，是生产矿业用筛拦网片及石油化工医药用过滤筛网、过滤网管的理想设备。

In this paper, the following topics are covered:(1) Study of the geometry of the raceways.(2) Analyses of the principal curvature of the raceways are also accomplished. In addition, the modification of the raceway is put forward.(3) The contact forces and the reducer efficiency are evaluated.

研究包含以下内容：（1）滚道几何形状的研究；（2）完成了对滚道曲率的分析，进一步提出了对滚道的修形；（3）对接触应力的评估；（4）研究了陶瓷滚珠在密珠摆线减速器中的工作性能。

This requires Film thickness in the order of four or more times greater than the average surface finish values of the ball and raceway.

这要求油膜的厚度要比滚珠和滚道的金属表面粗糙度厚4倍，甚至更多。

Directed by rack and guide rail which are fixed on the base, the traveling part of milling mechanism is drived by motor through feed change unit.

同时，带动行走部分的大多是丝杆螺母机构，滚珠丝杆等，而光杆和齿条齿轮机构均为导向定位作用。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。