郑州市高新区教育局:帮帮忙翻译10

来源:百度文库 编辑:神马品牌网 时间:2024/03/29 06:57:55
Müller Weingarten manufactures hydraulic presses with force ratings between 0.2 MN to 100 MN and mechanical crank presses from 12.5 MN to 63 MN.
Mechanical versus hydraulic
Hydraulic presses are force-related machines that work more slowly overall but they are more flexible. With a relatively high energy requirement, hydraulic pressures are built up via electrically driven pumps that produce ram movement. By using an accumulator drive it is possible to achieve a quicker ram speed. Without an accumulator drive, a direct drive can achieve a higher ram speed by consuming more energy.
Due to their flexibility, hydraulic presses can be automated very effectively. Multistage forming procedures can be designed and controlled far better on hydraulic presses than on mechanical presses, which deliver only a certain amount of force and thus only a certain amount of energy.
The flexibility of hydraulic presses, however, requires a greater investment. Furthermore their higher flexibility can result in higher operating and maintenance costs.
A new generation of crank presses introduced by Müller Weingarten in 2000 has been designed for multistage forming and mass production. These machines are suitable for a fully automated forging operation with material supply carried out either by robots through press windows or by a mechanical or electronic transfer. Due to the large die space, multistage forming is possible with the following forming operations: pre-forming, pre-forging, finish forging, trimming, punching, and calibrating.
On a mechanical press, energy is supplied to a flywheel by an electric motor, with approximately 15% of this energy needed for each stroke. As mechanical presses are course-related machines, a limited forming energy for a certain ram course and thus a limited forging force in the bottom dead center is available. Because of this, the process design has to be coordinated. Therefore it is necessary, for complex pre-forming operations, to allow for the limited forming energy through pre-forming or by multistage pre-forming in two steps.

M5uller Weingarten 制造水力新闻以力量规定值在0.2 MN 之间到100 MN 并且机械曲柄按从12.5 MN 到63 MN 。机械的对水力水力新闻是整体上慢慢地运转的与力量相关的机器但他们是更加灵活的。以一个相对地高能要求, 液压被加强通过导致公羊运动电子的被驾驶的泵浦。由使用累加器驾驶它是可能达到更快的公羊速度。没有累加器驱动, 直接传动可能达到更高的公羊速度由消耗更多能量。由于他们的灵活性, 水力新闻可能非常有效地被自动化。多级形成的规程可能被设计和受控制好在水力新闻比在机械新闻, 提供唯一有些力量和因而唯一某一相当数量能量。水力新闻的灵活性, 然而, 要求一种更加巨大的投资。此外他们的更高的灵活性可能导致高经营和维修费用。2000 年摇晃的新闻的新一代由M5uller Weingarten 介绍被设计了为多级形成和大量生产。这些机器是适当的为充分地被自动化伪造操作以物质供应执行了或由机器人通过新闻窗口或由机械或电子调用。由于大模子空间, 多级形成是可能的以以下形成的操作: pre-forming, 前锻件, 结束锻件, 饰物, 猛击, 和校准。在一则机械新闻, 能量被提供给飞轮由一台电动机, 以大约15% 这能量需要为各个冲程。因为机械新闻是与路线相关的机器, 有限的形成的能量为某一公羊路线和有限的锻件力量在中心因而是可利用的。因此, 处理设计必须被协调。所以它是必要的, 为复杂pre-forming 操作, 考虑到有限的形成的能量通过pre-forming 或由多级pre-forming 在二步。

看他的等级应该没多少分,也就算了

那么多求人帮忙,却小气的悬赏分都不设!

这么多啊!!!!!!!!