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武汉科技大学本科毕业论文外文翻译

MECHANIZING THE CUTTING OF ALUMINUM TUBES

A. A. Sal'nikov UDC 669-427.42:65/011.54 .Our combine makes wide use of locally made cables in crane operations. The production of up to 1500-1800 cables per month, for all combine shops, is centralized in a special workshop. The shop uses both new cables and old cables taken from hoisting equipment, as well as aluminum tubes. The loops in the cables are formed with aluminum bushings by compressing the tubes on a special press.

Using this method to make cables has made the work less

labor-intensive and made the job of the fitters easier. However, there are several operations in the method which need to be mechanized. For this purpose, we are introducing up-to-date methods of making slings, reconditioning equipment, and bringing in new devices.

One of the most time-consuming operations in making slings was cutting the aluminum tubes into bushings. This operation was done previously on lathes with centers up to 300mm high using cutoff tools. Before the 5-8 m-long tubes were mounted on the lathe, they had to be cut into l-l.5-m lengths on a cutting-off machine to prevent them from being bent during rotation. This practice consumed a fair amount of time, and resulted in a substantial amount of waste in the form of chips and crop due to a lack of correspondence between the cut lengths of tubing and the length of the bushing.

To eliminate these problems, we modified the "Wagner"

cutting-off saw, replacing a segmented blade made of steel 65G with a cutting disk secured by flanges.

A holder was made (Fig. 3) for the rotating tube. The aluminum 1

武汉科技大学本科毕业论文外文翻译

tube is cut into bushings by the rotating disk, which is moved into the tube. Here, the disk imparts rotary motion to the tube, which is mounted in bearings. The operation was mechanized by equipping the saw with a mechanism providing for measured feeding of the tubes and an automated control panel.

Aluminum tubes are now cut into bushings in the following manner. The tube moves up to a stop on the receiving roller conveyor and the saw is set for automatic operation. Here, the disk is started rotating (the main drive is connected) and transverse feed of the stock is begun.

The stock is stopped after the cut is made and the limit switch is tripped. A signal is simultaneously sent to turn on the electric motor which returns the stock, this motor having a higher speed than the motor which moves the stock forward. Another limit switch is tripped when the stock has been returned to its original position and the return motor is turned off. After a brief pause, a signal is sent to connect an electromagnet which controls the valves of air cylinders provided to grip the tube. The cylinders feed the tube axially over a measured distance. The electric motor which feeds the stock is then connected. The process is repeated.

The provision of the saw with a holder and a mechanism to feed measured lengths of tubing and the partial automation of the operation have made it possible to completely mechanize the cutting of aluminum tubes into bushings, improve working conditions, introduce multi-Magnitogorsk Metallurgical Combine.1982.

Translated from Metallurg, No. 4, p. 35, April,134

0026-0894/82/0304-0134507.50 _9 1982 Plenum Publishing Corporation

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武汉科技大学本科毕业论文外文翻译

机械化的铝管切割

我们的合作，使当地制造的起重机电缆得到了广泛的应用，对每月高达1500-1800的电缆产量，所有相合作的要厂，都被集中在了一个特殊的工厂里。该厂同时使用新的电缆和来自起重机设备的旧电缆，以及铝管。从而形成了将铝衬套通过一个特殊的力压缩在一个按管上的电缆生产循环。

使用这种方法，使电缆的工作取得了较低劳动强度，使钳工的工作更容易。然而，在本方法仍然需要将几个操作实现机械化。为此，我们将推出最新制作吊索，整修设备，并在引进新设备的最新方法。

其中，作出吊索最耗时的操作之一是削减铝管成衬套。这一操作已经在以前中心工作高达300毫米的切断工具的车床上实现了。把5-8米长的管子安装在车床上，他们将被放在切剪机上，把它们切剪成l-l.5米的长度，以防止他们在旋转弯曲。这种做法消耗了大量的时间，并造成了大量的切屑和剪切的浪费，主要是由于油管的长度和套管的长度在切割时的不一致所形式的。

为了消除这些问题，我们修改了“Wagner”切断锯, 更换了由65号钢制成的扇形刀片和由法兰盘担保的切头(图2)。为了旋转的管子设计了夹持装置（图3）

通过旋转盘，它向铝管内转动，铝管被被切割成衬套管。在这里，安装在轴承上的旋转盘相对铝管作旋转运动。这次操作可以通过安装由自动测量和自动控制的机械锯实现机械化。

用以下方式可以将铝管被切成衬套。管移动到接收辊子时输送机停止，然后看到的是一套自动操作。在这里，旋转盘启动旋转（主驱动器是连接的）并且开始原料的横向进给。

在剪切之后和限制开关跳闸，原料进给就会停止。一个信号同时发送到打开电动马达的回路，它直接反应到原料的供给，这种电机具有比前面移动原料的电机更高的转动速度。另一个限制开关跳闸时，铝管已回到原来的位置，而回路马达处于关闭状态。经过短暂的停顿，信号发送到连接它所控制的电磁阀气缸的空气导管回路中。汽缸通过一个测量距离的装置控制电缆的轴向加工。控制原料的电动机然后被连接，整个工作过程 3

武汉科技大学本科毕业论文外文翻译

开始重复。

切断锯的准备，测量铝管长度的机械装置以及部分自动操作已经使由铝管切割成套管完全实现机械化变成了可能。改善工作条件，引进多元化生产方式可以通过先后进行切割一个开放的轧制技术的比较来作出评估。这项工作可以做足够的精度和在很短的时间适度改善轧辊车床的经营资格。

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