Radial Drilling Machines. Radial drilling machine is the largest and mostversatile of the drill press group. It is intended for large heavy work, which

Radial Drilling Machines.

Radial drilling machine is the largest and most
versatile of the drill press group. It is intended for large heavy work, which
cannot be easily moved from one place to another, or work, which is beyond the
capacity of smaller drill presses used.

Its distinguishing feature is a long heavy radial arm 5 ft. or more in length, which
swivels around the vertical cylindrical column to any point. A tool head moves
along the arm up and down the column. On some machines the tool head can be
swiveled at any angle to drill angular holes. The drill spindle revolves within
the head and is extended downward for some distance to provide feed for the
drill.

A typical machine with 16-inch column would have a
20-hp motor and a range of 15 to 700 rpm with 32 speeds within the range. Its
weight would be 12 tons.

Multiple-Spindle Drilling Machine.

The multiple-spindle drilling machines are built in
both vertical and horizontal types. Saving considerable time and space this
machine is used for simultaneous drilling of many holes in large number of
work-pieces. The machine may have a number of movable drills mounted on the
cross way, all the spindles being driven from the same shaft by a worm gear.
One of the multiple-spindle machines is the fully automatic multiple-spindle
drill head machine requiring only push-button operation once it has been set
up. The machine is provided with a large number of spindles ranging from four
to a hundred or even more, which are driven by the same drive gear in the same
head.

 

Задание 1. Переведите текст письменно.

Задание 2. Выпишите из текста
предложения:

в Present
Simple, Active Voice (одно);
с
модальным глаголом (одно);
 в Present
Simple, Passive Voice (одно).

 

Задание 3. Составьте вопросительные
предложения 5 типов к предложениям, выбранным в задании 2.

Задание 4. Во второй части текста
выделите все сказуемые, определите их залог и время.

 

Задание 5. Из первого отрывка выпишите
все прилагательные и напишите их в 3-х степенях сравнения.

  • Держи пока первое и второе , над остальными думаю