Introduction to Drilling and Boring Machines

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What is the primary purpose of a drilling machine?

Producing a cylindrical hole of required diameter and depth on metal workpieces (correct)

Performing cutting operations on metal workpieces

Polishing the surface of metal workpieces

Boring large holes in metal workpieces

Where is the drill fitted in a drilling machine?

Drill head

Column

Base

Spindle (correct)

How is the depth of the hole controlled in a drilling machine?

By rotating the drill head

By adjusting the speed of the spindle

By moving the table up and down (correct)

By adjusting the voltage of the electric motor

Which part of a drilling machine is designed to rest on a bench, pedestal, or floor?

Base Signup and view all the answers

What is mounted on top of the column in a drilling machine?

Electric motor Signup and view all the answers

Why is a drilling machine considered cost-effective for drilling operations?

It can produce holes at a low cost and in a short time Signup and view all the answers

What type of drilling machine is designed for handling medium-sized workpieces?

Upright drilling machine Signup and view all the answers

Which drilling machine is named so due to its ability to be carried and used anywhere in the workshop?

Portable drilling machine Signup and view all the answers

What type of drilling machine is ideal for drilling small holes at high speeds in light jobs?

Sensitive drilling machine Signup and view all the answers

Which drilling machine is supplied with a power feed arrangement and can handle holes of up to 50mm diameter?

Upright drilling machine Signup and view all the answers

Which part of the sensitive drilling machine can be adjusted vertically to accommodate workpieces of different heights?

Table Signup and view all the answers

What connects the drill spindle and the driving motor in the sensitive drilling machine?

'V' belt and cone pulleys Signup and view all the answers

Which part of the upright drilling machine can be raised or lowered to accommodate workpieces of different heights?

Radial arm Signup and view all the answers

What is the main reason for the name 'Radial Drilling Machine'?

The presence of a radial arm that can swing around Signup and view all the answers

What distinguishes the Sensitive Drilling Machine from other types of machines?

The hand feed feature for sensing drill progress Signup and view all the answers

What is the purpose of a countersink?

To enlarge the top of holes conically Signup and view all the answers

Which part of a twist drill is responsible for maintaining the alignment of the drill and the straightness of the hole?

Land Signup and view all the answers

How many flutes are typically found on a tap for cutting threads on the inside of a hole?

Three Signup and view all the answers

What is the function of the shank on a twist drill?

To hold and drive the drill Signup and view all the answers

How are countersinks different from counter bores?

Counter bores have a different angle for cutting edges Signup and view all the answers

What do the flutes on a twist drill allow for?

Allow chips to escape and make them curl Signup and view all the answers

Which type of drilling machine is used for reproducing the same pattern of holes in a number of identical pieces?

Multiple spindle drilling machine Signup and view all the answers

What should be used while drilling in a deep hole drilling machine?

Coolant Signup and view all the answers

Which factor is NOT considered when specifying a drilling machine according to the text?

Weight of the operator Signup and view all the answers

What is the function of a counter bore in drilling?

To enlarge the top of a previously machined hole Signup and view all the answers

Which tool removes a smaller amount of material and gives a better finish in drilling?

Reamer Signup and view all the answers

What holds the workpiece firmly on the machine table to prevent rotation?

'T' - bolts and clamps Signup and view all the answers

Introduction to Drilling and Boring Machines

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Questions and Answers

What is the primary purpose of a drilling machine?

Where is the drill fitted in a drilling machine?

How is the depth of the hole controlled in a drilling machine?

Which part of a drilling machine is designed to rest on a bench, pedestal, or floor?

What is mounted on top of the column in a drilling machine?

Why is a drilling machine considered cost-effective for drilling operations?

What type of drilling machine is designed for handling medium-sized workpieces?

Which drilling machine is named so due to its ability to be carried and used anywhere in the workshop?

What type of drilling machine is ideal for drilling small holes at high speeds in light jobs?

Which drilling machine is supplied with a power feed arrangement and can handle holes of up to 50mm diameter?

Which part of the sensitive drilling machine can be adjusted vertically to accommodate workpieces of different heights?

What connects the drill spindle and the driving motor in the sensitive drilling machine?

Which part of the upright drilling machine can be raised or lowered to accommodate workpieces of different heights?

What is the main reason for the name 'Radial Drilling Machine'?

What distinguishes the Sensitive Drilling Machine from other types of machines?

What is the purpose of a countersink?

Which part of a twist drill is responsible for maintaining the alignment of the drill and the straightness of the hole?

How many flutes are typically found on a tap for cutting threads on the inside of a hole?

What is the function of the shank on a twist drill?

How are countersinks different from counter bores?

What do the flutes on a twist drill allow for?

Which type of drilling machine is used for reproducing the same pattern of holes in a number of identical pieces?

What should be used while drilling in a deep hole drilling machine?

Which factor is NOT considered when specifying a drilling machine according to the text?

What is the function of a counter bore in drilling?

Which tool removes a smaller amount of material and gives a better finish in drilling?

What holds the workpiece firmly on the machine table to prevent rotation?

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