Mill drill

Mill drills are a lighter alternative to a milling machine. They combine a drill press (belt driven) with the X/Y coordinate abilities of the milling machine's table and a locking collet that ensures that the cutting tool will not fall from the spindle when lateral forces are experienced against the bit. Although they are light in construction, they have the advantages of being space-saving and versatile as well as inexpensive, being suitable for light machining that may otherwise not be affordable.

Exercise 5. Make up the sentences:

1) to be, a fixed style, a drill press, of.

2) to consist of, a drill press, a base, column (or pillar), table, spindle (or quill), and drill head, driven, an induction motor, by.

3) can be adjusted, to be moved, vertically, the table, and, a rack, and pinion, by

4) to be defined, swing, as twice, the throat distance.

5) can, use, modern, drill presses, variable-speed, a, motor, conjunction, the stepped-pulley system, with, in.

6) to be, to be achieved, a geared head drill press, a drill press, power transmission, the motor, the spindle, solely, in, which, from, to.

7) to be, geared head drill presses, commonly, found, tool rooms, and other commercial environments, in.

8) to be, can be moved, a radial arm drill press, a large geared head drill press, the head, an arm, that, to radiate, the machine's column, in, along, from, which.

Exercise 6. Fill the gaps with the words that are given under the line.

1) A drill press (also known as pedestal drill, pillar drill, or bench drill) is a fixed style of drill that may be mounted on … or bolted to the floor or workbench.

2) The head has a set of handles (usually 3) radiating from … that, when turned, move the spindle and chuck vertically, parallel to the axis of the column.

3) The table may also from … and in some cases rotated to a position perpendicular to the column.

4) Speed change is achieved by manually moving … across a stepped pulley arrangement.

5) Some machine shop (tool room) drill presses are equipped with a continuously variable ….

6) Drill presses are often used for … workshop tasks such as sanding, honing or polishing, by mounting sanding drums, honing wheels and various other rotating accessories in the chuck.

7) No friction elements (e.g., belts) of any kind are used, which … a positive drive at all times and minimizes maintenance requirements.

8) Most machines of this type are designed to be operated on … and are generally of more rugged construction than equivalent sized belt-driven units.

9) … systems are also common on these machines to prolong tool life under production conditions.

10) Mill drills are a lighter … to a milling machine.

11) They combine a drill press (belt driven) with the X/Y coordinate abilities of … and a locking collet.

the milling machine's table, alternative, coolant, three phase power, assures, miscellaneous, transmission, a belt, the spindle's axis, a central hub, a stand

Дата добавления: 2015-07-07