Final MDSP Slides (Coaching)

59⁰

A correct cutting angle on a drill for ordinary work is:

a vise and a clamp

When using a drill press, the work should be hold with:

shaping

A machining operation whereby the tool reciprocates and the feed is stationary.

milling

A machining operation whereby the tool rotates and the feed is stationary.

grinder

A machine used in shaping metal by means of abrasive wheel or removal of metals with abrasive.

packings

To prevent leakage in dynamic seals, it is recommended to used

knurling

The process of checking or producing checkers on the surface of the piece by rolling checkered depressions in the surface.

chordal thickness

Tooth width measured along the chord at the pitch circle.

18 to 24

It is recommended for high speed application that the maximum number of teeth in small sprocket should be:

10 to 13

Cast iron flywheels are commonly designated with a factor of safety of:

MIRDC

An agency handling assistance to all foundry, machine shop and metallurgical plant operation.

plasticity

A metal characteristic that absorbs extreme deformation without rupture is called:

inside diameter

The size of all the pipes from 1/16 inches to 12 inches is defined by _____ size.

dry

Cutting lubricants used in drilling, reaming and lapping of cast iron parts.

pressure angle

The angle developed between tooth profile and radial line at its pitch point is referred as:

softer

The purpose of annealing is to make a metal:

92XX

AISI numbering for silicon steel.

0.283

Specific weight of steel in lbs/inches3

spring index

Ratio of coil to wire diameter, a measure of coil curvature.

interference of metals

When hole is smaller than the shaft, it will take pressure to pull the parts together, and the allowance is negative and is termed as:

UNC

A kind of thread that is generally used.

shaper

A machine tool used principally to machine flat or plane surfaces with a single point cutting tool.

coefficient of restitution

The ratio of relative viscosities colliding bodies after impact to their velocity before impact.

upsetting

In machine shop forging operation of lengthening a piece of stock while reducing the cross sectional area of work is called:

clearance

It is the radial distance between the top of the tooth and the bottoms of the mating tooth space.

arc of recess

An arc of the pitch circle through which a tooth travels from its contact to a mating tooth at the pitch point to the point where contact ceases.

lead

The distance a helical gear would thread along its axis one revolution of it were free to move axially.

resilience

Ability of a material to absorb energy when deformed elastically and return to it when unloaded is:

tack weld

A weld made to hold the parts of a weldment in proper alignment until final welds are made.

Rockwell test

It is a machine used for testing of very thin steel or surface layers.

Tool grinder

A machine tool in which an abrasive wheel is used as a cutting tool to obtain a very smooth finish.

milling machine

A machine tool used to produce a variety of surfaces by using a circular type cutter with multiple teeth

broaching machine

A cutting tool used to finish internal and external surfaces by the use of a cutter called a broach, which has a series of cutting edges of teeth.

universal chuck

A kind of chuck, which should not be used where accuracy is required called

mandrel

A tool when pressed into a finished hole in a piece of work, provides center on which the place may be turned otherwise machined called

slotter

A machine tool which is very similar to a shaper except that the ram reciprocates vertically rather than horizontally.

tap

A cylindrical bar of steel with threads formed around it and grooves or flutes running lengthwise in it, intersecting with threads to form cutting edges. It is used to cut internal threads.

Counter sinking

The operation of making a cone-shaped enlargement of the end of a hole, as for a recess for a flat head screw.

reaming

It is an operation of sizing and finishing a hole by means of a cutting tool having several cutting edges.

laying out

The hop term used to include the marking or inscribing of center points circle area of straight lines upon metal surface either curve or flat, for the guidance of the worker called:

dial indicator

It is used to true and align machine tools fixtures and works to test and inspect size trueness of finished work and compare measurements either heights or depths or many other measurements.

rolling

The process of forming metals by the use of dies after the metal is heated to its plastic range.

power saw

A machine tool used to cut metals a lift, medium and large section using a reciprocating hacksaw blade.

30⁰

The usual value of helix angle of a drill is:

connecting load pipes by soldering alloy

Wiping is the process of:

cavity is filled with a precalculated quantity of metal and a core or plunger is inserted to force the metal into cavity

In Carthias process

Help feed the casting until oil solidification takes place

What is the purpose of riser?

Copper

The mould for casting ferrous materials

cylindrical bores

A plug gage is used to measure

magnetic chuck

When large number of components are turned and parted off a bar the chuck generally used is the _____.

40m/min

Which of the following is the cutting speed m of brass?

shaper

Quick return mechanism is used in a

hollow work pieces

Mandrel used to hold

against the milling cutter

In up cut milling, the work piece is fed

in flow

Sprue is passage provide for the

mm per revolution

Feed in the lathe machine is expressed in

easy withdrawal

Rapping allowance is provided on a pattern take care of

three jaw chuck

Chuck use in turret lathe is

top half molding box

Cape in foundry practice refers to

hot forging

A vent wire is use in

cutting gears in a shaper

Angle plate is used for

coarse grain

Permeability, in relation to molding sands, is high for

give desired direction of the movement to the lathe carriage

The purpose of tumbler gears in lathe is to

angle gage

A sine bar cannot be used without a/an

b. micrometer

c. slip gage

d. vernier caliper

65. The operation of finishing drilled hole to the correct size is known as

a. counter boring

b. counter sinking

c. reaming*

d. spot facing

66. When the outer corners of the cutting edges of a drill wear away to rapidly, it is an indication of?

a. not enough speed

b. too much rake angle

c. too much high speed

d. B or C*

67. Carbon steel should be operated at

a. speed greater than that when using a high speed drill

b. speed less than that when using a high speed drill*

c. the same speed as that using a high speed steel

d. none of the above

Knurling is done to_____.

a. boring

b. chamfering*

c. planning

d. turning

69. When material in a lathe, the harder the material being cut, the tool bit should have

a. less side rake*