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There are several manual steering gears in current use like the rack and pinion type ,the worm and tapered pin steering gear ,and the worm and roller steering gear.

目前使用的手动转向齿轮机构就是有好几种，如齿条齿轮式转向机构、蜗杆斜销式转向机构以及蜗轮滚柱式转向机构。

For many years ,by adhering to the principle of customer foremost,Shanghai Saini Company has been always engaged in the production of R series coaxial hard gear surface column gear speed reducers, S series gear worm speed reducers, F series parallel axis gear speed reducers, K series spiral umbrella gear speed reducers, RV series worm speed reducers, MB, MBN planet taper disc stepless speed variators, WH/WB series high power gear speed reducers, cycloid pin gear speed reducers and other types of universal and special speed reducers.

多年以来，上海赛尼传动设备有限公司秉着客户至上的原则，专业生产WR系列同轴式硬齿面圆柱齿轮减速机，WK系列弧齿锥齿轮硬齿面减速机，WF系列平行轴斜齿轮减速机，WS系列圆柱蜗杆减速机，RV系列蜗杆减速机，MB、MBN行星锥盘无级变速机等其他类型通用的和专用的减速机，被广泛应用于舞台机械、食品、包装、陶瓷、制药、纺织、环保等诸多领域。

Finally, the analysis results of assembly interference and assembly clearance show that the numerical models established have high degree of precision. That can be used as a reference for the profile of cutter and the virtual design of double-roller enveloping hourglass worm reducer.

最后的装配干涉和装配间隙分析结果表明，建立的数字化模型精确度很高，可以为加工蜗杆时刀具廓形的设计，无侧隙双滚子包络环面蜗杆减速器的虚拟设计等后续工作提供参考依据。

This paper uses VBAlanguage which is one of the secondary development tools for AutoCAD 2000 and applies the ActiveX technology to develop CAD system of worm-shaped honing wheel to complete the parametric design, which has friendly UI.

通过对蜗杆形珩磨轮珩齿机理的探讨，推出了阿基米德蜗杆形珩磨轮的设计计算公式。

Nowadays, worm gearing which has higher performance in bearing capacity, transmission efficiency and transmission precision is needed in modern industry products.

现代工业产品对蜗杆蜗轮副在承载能力、传动效率和传动精度等方面提出了更高的要求。

A study on TI worm gearing is significant in theory and valuable in practice for developing a kind of worm reducer with high efficiency and heavy load capacity.

开展 TI 蜗杆传动的研究对开发研制高效、重载蜗杆减速机具有重要的理论意义和实用价值。

However, a disadvantage of worm gearing is the high sliding velocities across the teeth, the same as with crossed helical gears.

然而蜗杆蜗轮传动机构中存在齿间有较大滑移速度的缺点，正像交错轴斜齿轮那样。

Changsha, Hunan Tianming Machinery Industrial Co., Ltd. is a transmission gear, rack, chain wheel, crane slewing reducer, coupling, machine tool accessories, dual-metal bushing, pulley, bevel gear, helical gear, charcoal machine, worm gear, non - Standard design and processing, construction of the lift gear, manual steam valve, screw and nut, machine, ring gear, spline shaft and other products Co., Ltd. specializes in processing, the company is headquartered in Changsha, Hunan, Changsha, Hunan Tianming transmission machinery Industrial Co., Ltd. has a complete and scientific quality management system.

湖南长沙天明传动机械实业有限公司是齿轮、齿条、链轮、塔吊回转减速机、联轴器、机床配件、双金属衬套、皮带轮、锥齿轮、螺旋齿轮、木碳机、蜗轮蜗杆、非标设计及加工、施工电梯齿轮、手动汽阀、丝杆及螺母、分切机、内齿轮齿圈、花键传动轴等产品专业生产加工的股份有限公司，公司总部设在湖南长沙，湖南长沙天明传动机械实业有限公司拥有完整、科学的质量管理体系。

Fuzzy optimization design of worm gear in new type valve actuator;2. Fuzzy optimization method was applied to design the worm gear in valve actuator.

将模糊优化设计方法应用于电动装置的蜗杆传动设计，建立了模糊优化数学模型，并对其求解方法进行了详细的说明，通过实例表明模糊优化设计可以使蜗杆传动更加符合客观实际，从而进一步减小电动装置的体积，提高电动装置的效率。

Double tooth, the crown tooth, umbrella tooth, wheel, Helical, worm gear, safety gear clutch, kinds of non-standard shaped teeth and plastic gear boxes, precision gear, such as copper.

双层齿、皇冠齿、伞齿、滚轮、斜齿、蜗轮蜗杆、安全离合齿、各种非标异型齿及塑胶齿轮箱、精密铜齿轮等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。