pre-tightening是什么意思

网络释义

用法例句

The new\|developed on\|line preload controller of spindle bearing on precision machine\|tool is designed for the spindle system of the FL\|1000 precision grinding machine.

以 FL- 10 0 0型精密磨床主轴系统为对象 ,设计了一种精密机床主轴轴承预紧力实时控制系统 。

The axial fixed position preload is applied to middle ring of the shaft,the axial rigidity of the angular contact ball bearing is obtained by the impulse excitation tests.

对转台中环主轴施加轴向定位预紧力,通过脉冲激励法试验得到角接触球轴承的轴向刚度,试验结果与理论结果吻合较好,为转台研制中各轴系预紧量的控制提供了理论和实验依据。

The types and working principle of preload of the angular contact ball bearings are introduced, the selection rules of the preload and calculation method of determining preload force are given.

介绍角接触球轴承预紧的类型及工作原理 ,给出了预紧选择原则和确定预紧力的计算方法。

Optimizing the preloading parameters of assembled framework hydraulic press;

压机组合框架结构的预紧参数优化

On the coupling and preloading of the bolts in cranes;

螺栓在起重机械中的连接及预紧

Formulas are derived to calculate axial rigidity,radial rigidity and friction moment of preloading paired bearings with rigidity errors analyzed.

对配对角接触轴承刚度和摩擦力矩进行了分析,推导出配对预紧轴承的轴向、径向刚度和摩擦力矩公式,并对刚度误差进行了分析,以A型轴承为例,对推导出的计算公式进行了验证。

A new method of pre-tightening by means of drilling and heating for the king diameter coupling bolt was introduced.

介绍了一种在大直径联接螺栓中心钻孔,通过加热对螺栓进行预紧的新方法。

The appropriate pre-tightening of the composite housing can ensure steady operation and high machining precision of machine tools.

组合式机架适当的预紧对保证机床的稳定运行和高精度的加工要求十分重要。

This article has described the structure and function of the prestressing frame for the extruder and a pretension mode-the overheating steam heating pretension method,meanwhile by the applied examples the calculation of the pole elongation and the prestressing have been presented as well.

阐述了挤压机预应力框架的结构及作用,介绍了一种挤压机框架的预紧方式———过热蒸汽加热预紧法,并通过应用实例给出了拉杆伸长量和预紧力的确定方法。

Author illustrates the significance of rational bolt pretension and support strength by studying the factors including the effect of bolt support in roadway and the characteristics of the bolt's material.

从煤巷锚杆支护的效果、锚杆材料的特性等因素来阐述合理的锚杆预紧力和支护强度的意义。

That the analysis have been done with3D FEA under the condition of different pretension of bolt(100N,120N,150N,200N)、mastication load(100N,200N,300N)and angle of mastication load(5 0 、10 0 、15 0 .

方法 :依据螺旋CT针对中切牙位上颌骨扫描数据 ,建立上颌骨及种植体装配的三维有限元模型 ,分别就种植体穿心连接螺钉在不同预紧力 (100N/120N/150N/200N)、不同载荷 (100N/200N/300N)、不同加载角度(50、100、150、200、250、300)条件下进行有限元分析计算。

The criterion for the determination of the pretension of bicycle spokes and a correct design method of their diameter are given according to the principles of mechanics.

根据力学理论 ,提出了确定自行车车条预紧力的原则 ,推导出车条直径的设计公式。

The types and working principle of preload of the angular contact ball bearings are introduced, the selection rules of the preload and calculation method of determining preload force are given.

介绍角接触球轴承预紧的类型及工作原理,给出了预紧选择原则和确定预紧力的计算方法。

Study on Calculation Method about the Critical Preload of Hydraulic Press with Combined Pre-Tight Structure

组合预紧结构液压机临界预紧力的计算方法研究

Testing Method Research of Preloading on the Ball Bearing Used in Gyro Motor

陀螺仪马达轴承预紧力测试方法研究

Research on the Pretightening Force of Mckibben Pneumatic Artificial Muscles

基于Mckibben气动人工肌肉预紧力的研究

Influence of Bolt Pretightening Force to GIS Shell Flange Intensity

螺栓预紧力对GIS壳体法兰强度的影响

The Application of ANSYS to Optimal Design of Pretightening Structure

ANSYS在预紧结构优化设计中的应用

Application of Preload Disc Spring in the High-pressure Hydrogenation Heat Exchanger

预紧碟簧在加氢高压换热器上的应用

Emergency Preparedness and Prevention Group

紧急应变和预防小组

Best sellers must Be ordered in advance.

紧俏商品，预约订货。

The forecast for steel consumption is tied in with that for an aggregate economic variable.

钢铁消费预测与总的经济变量预测紧密相联。

My schedule for next week is very tight.

我下周预定要做的事排得很紧。

Programme for Emergency Prevention and Preparedness

防止和预防紧急事件方案

I don't have an appointment, but it's urgent.

我没有先预约，但事情紧急。

The government has to tighten its belt due to a large deficit.

由于庞大的赤字，政府必须缩紧预算。

precautionary emergency approach procedure

预防性紧急进场着陆程序

Tax revenue falls, putting more stress on public budgets.

税收锐减，让公共预算更加吃紧。

The budget committee is in the process of tightening the purse strings.

预算委员会正在紧缩开支。

The legislature has produced a new budget of unaccustomed austerity

我会制订出一个异常紧缩的预算方案