压力机

The main research contents of the dissertation is as follows:(1) It studies the basic structure and working-theory of crank press driven byvarying speed.

结合课题的研制，本论文的主要研究内容如下：(1)研究变速驱动曲柄压力机系统的构成和工作原理，提出本论文的研究任务。

Based on the structure characteristics of the high-speed closed crank press, a two-degree-of-freedom dynamics mode has been established.

新闻摘要：根据高速闭式曲柄压力机结构特点，建立了两自由度动力学模型。

The effect of abrasion in games of slider - crank mechanism on the motion reliability of crank press was analyzed.

全面反映了滑块机构铰链连接处的磨损对曲柄压力机运动可靠性的影响。

One of the most important problems in the field of forging and stamping is to improve the dynamic property and accuracy of crank press and to reduce the noise in stamping process.

提高曲柄压力机的动态性能和精度，降低冲压噪声是当今锻压领域亟待解决的重要问题之一。

Based on the structure characteristics of the high-speed closed crank press, a two-degree-of-freedom dynamics mode has been established.

根据高速闭式曲柄压力机结构特点，建立了两自由度动力学模型。

The crank press is one of the most wide-ranging used Manufacturing equipment. It is widely used in the field of electrical and electronic equipment production, Automobile Manufacturing.

曲柄压力机是应用最广的制造装备之一，其广泛应用于电器机械、汽车、电子设备、仪器制造、国防工业、日用品等生产行业。

The control-strategies is discussed based on motion controlling model for used in crank press driven by varying speeds.

对其在变速压力机上应用的控制策略和运动控制模型的建立展开讨论，在此基础上，详细分析了变速压力机控制系统各环节的传递函数和控制方法，给出了系统运动控制软件框图。

The results show that the upsetting deformation law of sintered preform is alike with the compact body,and the crank press is the best equipment of powder forging technology.

结果表明：烧结体的镦粗变形规律与致密体相同。指出了曲柄压力机是粉末锻造工艺的最佳设备。

And then the power of servo motor is calculated according to crank press working load , kinematical characteristic, torque and rotational momentum.

以变速驱动压力机的工作负荷、运动特点、工作总功、力矩和角动量为基础，计算其驱动电动机所需的功率。

After reading the relevant references, the author of this paper has discovered that as one of the most important parts in the crank press, a few optimized designing has been included in this field.

作者查阅了大量相关资料后确发现，对于曲柄压力机的关键部件———组合摩擦离合器制动器的优化设计研究相对较少。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。