传动

Optimal gear-driven design is greatly important in modern machine design,the article researched into a new method of optimal gear-driven design based on MATLAB for the purpose of finding a convenient and practical measure.

齿轮优化设计在现代机械设计中占有非常重要的地位，为了能找到一种简便实用的优化设计方法，本文研究了基于MATLAB平台建立齿轮传动的优化设计模型，描述了利用MATLAB优化工具箱解决齿轮参数优化问题的具体方法。

Cooling system with gear-driven pumps, high efficiency, high reliability; Belt drive failure will not result in engine overheating; Double thermostat design to improve the reliability of the cooling system

1.3 冷却系统采用齿轮驱动水泵，效率高，可靠性高；不会因为皮带传动失效造成柴油机过热；双节温器设计，提高了冷却系统的可靠性

Gear-driven ; optimal design ; optimization toolbox ; MATLAB

齿轮传动；优化设计；优化工具箱； MATLAB

Model JC-70DB AC variable-frequency gear-driven single shaft drawworks is developed to meet the need of the modern drilling technology.

为此 ，研制了JC— 70DB新型交流变频齿轮传动单轴绞车。

Step gear-driven ; joggle parameter ; multifold optimization

多级齿轮传动；啮合参数；多重优化

Paddy cultivator ; gear-driven ; deflection coefficient ; optimazition

水田耕整机；齿轮传动；变位系数；优化

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。

The design of the device using NC Lathe CA6240 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.

本设计利用数控装置对CA6240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。

They have more oomph, and no need of a gearbox to deliver it.

更有动力，还不需要变速箱传动。

With the rapid development of the mechanical technology, the higher quality for the gearing is required.

随着科学技术及机械工业的迅速发展，对齿轮传动的质量提出了更高的要求。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。