英语翻译,在线等啊!In ultrasonic machining, metal removal is effected

英语翻译,在线等啊!
In ultrasonic machining, metal removal is effected with the help of abrasive grains which are made to impinge repeatedly upon the workpiece surface by a tool oscillating at a high frequency. The tool cross-section is of a shape similar to that of the desired hole-only it is a little smaller in size in order to compensate for the overcut during the process. The tool oscillates at frequencies of the order of 15 KHz to 30 KHz with an amplitude ranging from 0.1 mm to 0.3 mm. the abrasive grains are carried to the gap between the tool and the workpiece with the help of a carrier fluid, generally water. The circulation of slurry also takes away the worn-out grains and the machining debris, and replaces them by workpiece; the tool also gets reduced in size due to the cutting action of the abrasive grits. Thus the drilled hole by ultrasonic machining is tapped, i.e. larger at the top. By compensating the tool wear properly, close tolerances can be obtained.
Fig.18-4 shows the schematic diagram of the USM equipment. It consists of an oscillator that converts the 50 Hz power supply into high frequency (15 KHz to 30 KHz) power which in turn is converted into mechanical oscillation with the help of a magnetostrictive or piezo-electric transducer. Of the two types, the piezo-electric transducers are more efficient, i.e. they involve less lose of power, and hence do not require cooling. The magnetostrictive transducers generally found in old machines are less efficient due to high eddy current losses and hence may require cooling.
The power rating of modern machines varies from 0.06 to 4 kw. Some of the designs have rating even up to 20 kw.
Applications
The process has been successfully employed for following applications.
(1) For machining of hard and brittle materials that cannot be machined by conventional means. Difficult to machine materials include glass, diamond and tungsten carbide, etc. wire drawing dies of diamond and tungsten carbide are drilled by using the USM process.
(2) For machining of circular and non-circular holes with straight or curved axes.
(3) Threading of hard materials. This can be done by having appropriate tool and workpiece motions.
(4)It has also been successfully used for machining of geranium, silicon, ceramics, carbon plates, quartz, tool steel, synthetic ruby, etc.
(5) For drilling of non-circular holes in hard metals.
Limitations
The major limitations of the process are as follows:
(1) Low machining rates are achievable as compared to the conventional machining processes.
(2) It is difficult to machine very deep holes, as the slurry movement is restricted.
(3) It is difficult to design the correct size of the tool to get exact dimensions on the job.
(4) There is high tool wear in the process.

不要用在线翻译类的工具翻译了，就算你用了，也请你麻烦帮我修正一下，那个不怎么准确，那个我也会用，我是实在对英语不感冒，所以才来提问的！

我自己手打的，可能有个别单词错了！

在超声加工、切削的帮助下,影响了磨粒反复开始,到作用在工件表面振动由工具在高频率.工具截面形状的类似于预期的hole-only有点小洋蓟来弥补的过程中overcut.工具振荡频率为15千赫至30千赫和振幅从0.1毫米到0.3毫米.摘要砂纹都抬到差距工件和工具的帮助下流体载体,一般水.泥浆循环也夺了破的谷物和加工碎片,而且取代他们;工具也得到工件缩小由于切割的磨料玉米糁.因此,钻孔超声加工是横置时,即更大的顶点.适当的刀具磨损估计值,关闭公差可以获得.
Fig.18-4显示有原理图的设备.它由振荡器可以把50赫兹供电成高频率(15千赫至30千赫)力量从而转化为机械振动在医生的帮助下磁致伸缩或压电电点传感器.两种类型的传感器压电电点更有效的,例如,它们包括少的能力,并因此失去不需要冷却.采用超磁致伸缩材料的传感器通常会发现在旧机器效率低是由于高涡流损耗,因此可能需要冷却.
现代机器的额定电压不同0.06到4千瓦.一些设计有等级甚至20千瓦.
应用
成功地使用过程为以下的应用.
(1)加工不能硬脆材料加工用传统的方式.很难机材料包括玻璃、金刚石、硬质合金、拉丝模具等金刚石和硬质合金经过钻孔利用超声电机的过程.
(2)对圆孔圆形和加工或弧形直轴.
(3)线程的艰苦的材料.这可以通过工具和工件正确运动.
(4)它也被成功地用于加工天竺葵、硅、陶瓷、碳板、石英、工具钢,合成宝石等.
(五)对非圆孔钻进坚硬的金属.
限制
过程的主要限制如下:
(1)低加工率可达到的相比,常规加工过程.
(2)它很难进行加工非常深孔、为浆运动是受限的.
(3)设计难度的正确尺寸准确的尺寸工具来获得工作上.
(4)的高刀具磨损的过程.
呃.=.=..就是这样了= =‖...