wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Press Tool Technology - Fill in the Blanks

Total questions: 96

Worksheet time: 48mins

Name
Class
Date
1.

Punches mounted in punch holders are subjected to ________ stresses.

a)

Compressive

b)

Tensile

c)

Shear

d)

Bending

2.

Thin punches buckle if ________ involved are not considered.

a)

Stresses

b)

Forces

c)

Dimensions

d)

Temperatures

3.

The Ultimate condition is when Buckling force is _____ to Cutting force.

a)

Equal

b)

Greater

c)

Less

d)

Unrelated

4.

Buckling is a ________ deflection.

a)

Lateral

b)

Vertical

c)

Axial

d)

Rotational

5.

Buckling calculation is used to find _____ diameter in a sheet metal.

a)

Piercing

b)

Blanking

c)

Drawing

d)

Notching

6.

Deep drawing is characterised by _____ flow.

a)

Metal flow

b)

Water flow

c)

Air flow

d)

Heat flow

7.

Volume of component and Blank are ________ in deep drawing process.

a)

Same

b)

Different

c)

Variable

d)

Zero

8.

There is ______ in cross section of component in successive draws.

a)

Reduction

b)

Expansion

c)

Distortion

d)

Elongation

9.

Corners of cylindrical components undergo ________.

a)

Bending

b)

Shearing

c)

Torsion

d)

Compression

10.

______ compression acts on flange area of component.

a)

Circumferential

b)

Axial

c)

Radial

d)

Longitudinal

11.

The straight walls of drawn component are in ________.

a)

Tension

b)

Compression

c)

Shear

d)

Bending

12.

Thickening of component takes place at ______ area.

a)

Flange

b)

Web

c)

Rib

d)

Base

13.

Formula for drawing force is ________.

a)

σu+σy/2xA

b)

σu−σy/2xA

c)

σu×σy/2xA

d)

σu/σy×2A

14.

Drawing force can be calculated using the formula ________.

a)

σu+σy/2xA

b)

σu-σy/2xA

c)

σu×σy/2xA

d)

σu/σy/2xA

15.

______ capacity of the press is used by blank holder.

a)

One third

b)

Half

c)

Two thirds

d)

One fourth

16.

Low blank holding force leads to ______ formation.

a)

Wrinkle

b)

Crack

c)

Tear

d)

Fold

17.

The recommended blank holding force varies from ________.

a)

80 to 200N/mm2

b)

20 to 50N/mm2

c)

200 to 400N/mm2

d)

500 to 800N/mm2

18.

High blank holding force leads to ________.

a)

Tearing

b)

Wrinkling

c)

Cracking

d)

Springback

19.

Blank holding force is not required when d/D is greater than or equal to ____.

a)

0.2

b)

0.5

c)

0.8

d)

0.1

20.

Too large clearance will result in ________.

a)

wrinkles

b)

tearing

c)

hardness

d)

cracks

21.

Too small clearance will result in ________.

a)

tearing

b)

bending

c)

cracking

d)

wrinkling

22.

Normally ___% to ___% of the metal thickness is allowed as clearance.

a)

7 to 20

b)

1 to 5

c)

20 to 35

d)

35 to 50

23.

The draw beads reduce the ________ pressure.

a)

blank holding

b)

hydraulic

c)

atmospheric

d)

vapor

24.

Draw beads are the small projections on the ________ of draw die.

a)

Surface

b)

Edge

c)

Base

d)

Handle

25.

Air vent should be provided in the punch and the die to eliminate ________.

a)

air pockets

b)

oil leakage

c)

metal corrosion

d)

tool wear

26.

Drawing compounds used in deep drawing are known as _________?

a)

boundary lubricants

b)

coolants

c)

adhesives

d)

solvents

27.

Deep drawing is in the high pressure on the order of ________ PSI.

a)

1,00,000

b)

10,000

c)

50,000

d)

5,000

28.

The ratio H/h is a measure of ________ strain.

a)

tensile

b)

shear

c)

compressive

d)

volumetric

29.

The number of draws can be determined on the value of ________ ratio.

a)

d / D

b)

D / d

c)

d + D

d)

D - d

30.

Metal to metal adhesion in deep drawing can be prevented by ________.

a)

lubrication

b)

heating

c)

painting

d)

welding

31.

Metal to metal adhesion is otherwise known as ________.

a)

welding

b)

soldering

c)

brazing

d)

gluing

32.

If two sheets are positioned one over the other while drawing ________ may occur.

a)

Lamination

b)

Cracking

c)

Warping

d)

Blistering

33.

Bulges will occur if the ________ is more.

a)

draw clearance

b)

die angle

c)

lubricant viscosity

d)

blank thickness

34.

Square boxes can be drawn to a depth of approximately ___% of the width.

a)

80

b)

50

c)

60

d)

100

35.

A part can be drawn in one station to a depth of 4 to 6 times the ________.

a)

corner radius

b)

diameter

c)

thickness

d)

length

36.

The force required for rectangular drawing, P= ________.

a)

P= σ s (2π R c1 + Lc2)

b)

P= σ s (π R c1 + Lc2)

c)

P= σ s (2π R c1 - Lc2)

d)

P= σ s (2π R c1)

37.

Inadequate venting will lead to ________ marks.

a)

blister

b)

burn

c)

scratch

d)

pin

38.

If the punch is not located ________ the shell will fracture.

a)

centrally

b)

randomly

c)

externally

d)

internally

39.

Wrinkles occur at the ___________ of the blank.

a)

Edge

b)

Center

c)

Surface

d)

Corner

40.

Wrinkling can be avoided or rectified by _________.

a)

using draw beads

b)

increasing lubrication

c)

reducing blank holder force

d)

using thicker sheets

41.

Counter drawing is also known as _______________.

a)

Reverse drawing

b)

Contour drawing

c)

Blind drawing

d)

Gesture drawing

42.

The draw punch force acts from below through the active ________.

a)

Draw cushion

b)

Die block

c)

Blank holder

d)

Ram

43.

Another method of redrawing the shell is ______________.

a)

Ironing

b)

Casting

c)

Forging

d)

Extrusion

44.

Ironing is used to correct the ____________ of the wall.

a)

Thickness

b)

Color

c)

Height

d)

Texture

45.

______________ is the method of redrawing the shell to improve surface finish and reduce wall thickness.

a)

Ironing

b)

Blanking

c)

Deep Drawing

d)

Spinning

46.

The process of producing small diameter cups by drawing is _______________.

a)

Eyelet drawing

b)

Deep drawing

c)

Spinning

d)

Extrusion

47.

The depth of the shell is __________ compared to its diameter.

a)

More

b)

Less

c)

Equal

d)

Negligible

48.

Statistics helps us to predict __________ within certain limits.

a)

Variation

b)

Accuracy

c)

Certainty

d)

Randomness

49.

Variation is ____________ in nature.

a)

Inherent

b)

Artificial

c)

Temporary

d)

External

50.

Variation follows __________ distribution.

a)

Normal

b)

Poisson

c)

Binomial

d)

Uniform

51.

______________ is done to ensure that the variation is kept at a minimum.

a)

Process capability

b)

Quality audit

c)

Root cause analysis

d)

Preventive maintenance

52.

Normal distribution is smooth & _______ shaped.

a)

Bell

b)

Square

c)

Triangle

d)

Flat

53.

Difference between each interval from the mean, corresponds to the _____________.

a)

Standard deviations

b)

Median

c)

Mode

d)

Range

54.

In +σ band ________% of observations are expected to lie.

a)

68.27%

b)

50%

c)

95%

d)

99%

55.

95.45% of all observations are expected to lie in _________

a)

+2σ

b)

+1σ

c)

+3σ

d)

+4σ

56.

In +3σ band ________% of observations are expected to lie.

a)

99.73%

b)

95%

c)

68%

d)

90%

57.

The measure of central tendency is called as _____________________.

a)

Arithmetic mean

b)

Median

c)

Mode

d)

Range

58.

The ratio of expected capability and actual capability _________________ .

a)

process capability index(cp).

b)

mean deviation.

c)

control chart.

d)

standard deviation.

59.

Formula for process capability index is _____________________.

a)

Cp=specification tolerance / process capability

b)

Cp=process mean / specification tolerance

c)

Cp=process capability / specification tolerance

d)

Cp=process mean / process capability

60.

The process is considered to be capable when the index is _______________.

a)

1.33

b)

1.00

c)

2.00

d)

0.67

61.

Cpk index considers both ____________________ and ____________________ in evaluating the process capability.

a)

process variability & process centring

b)

process mean & process range

c)

process limits & process tolerance

d)

process output & process input

62.

Cpk is given by_______________

a)

X-LSL/3sigma (or) USL-X/3sigma

b)

(USL-LSL)/6sigma

c)

(X-USL)/3sigma

d)

(LSL-X)/3sigma

63.

When Cpk index is 1.33, or more the capability limits would be__________.

a)

+4b(sigma)

b)

+3b(sigma)

c)

+2b(sigma)

d)

+1b(sigma)

64.

Commonly used measures of dispersion are_______________

a)

Standard deviation range

b)

Mean median

c)

Mode quartile

d)

Sum average

65.

After the cutting impact in a press the deflection leads to ______________ of punch.

a)

Misalignment

b)

Sharpening

c)

Lubrication

d)

Alignment

66.

If the alignment is not correct ______________ is produced.

a)

Friction

b)

Heat

c)

Noise

d)

Vibration

67.

Improper cleaning of the tool will lead to _________________

a)

Tool wear

b)

Tool sharpening

c)

Tool painting

d)

Tool balancing

68.

The punches are subjected to wear ________ times as fast as the die plates.

a)

Three

b)

One

c)

Five

d)

Ten

69.

After grinding a die plate or a punch, ______________ are formed around the cutting edges.

a)

Featheredges

b)

Burrs

c)

Grooves

d)

Cracks

70.

Feather edges are removed by means of ________________.

a)

Oilstones

b)

Files

c)

Sandpaper

d)

Chisels

71.

If the slugs shift on to some cutting edges, ________________ may break.

a)

Punches

b)

Dies

c)

Bolts

d)

Springs

72.

The tool must be located on the ________________

a)

Bolster plate

b)

Ram

c)

Die shoe

d)

Punch holder

73.

Always ________________ the punches after resharpening

a)

Demagnetize

b)

Lubricate

c)

Polish

d)

Heat

74.

Always use non-magnetic materials for ________________.

a)

Die member

b)

Punch

c)

Stripper

d)

Bolster

75.

Inaccurate feeding causes the cutting of ________________.

a)

Half blanks

b)

Full blanks

c)

Scrap pieces

d)

Finished products

76.

Sectional die plate is also called as ________________

a)

Solid die plate

b)

Split die plate

c)

Adjustable die plate

d)

Round die plate

77.

In a __________ die there are three main tool members

a)

Drawing

b)

Blanking

c)

Piercing

d)

Forming

78.

In drawing operations, __________ creates a film between the stock and the tool member.

a)

lubrication

b)

oxidation

c)

corrosion

d)

adhesion

79.

The slug causes ____________ of die opening and slug lifting.

a)

clogging

b)

expansion

c)

cooling

d)

shrinking

80.

The __________ causes clogging of die opening and slug pulling.

a)

slug

b)

punch

c)

stripper

d)

blank

81.

Punch wears at approximately the __________ rate as the die block

a)

same (or) twice as fast

b)

half the

c)

quarter the

d)

ten times the

82.

The wear will be __________ for piercing punches than for blanking punches

a)

Greater

b)

Lesser

c)

Equal

d)

Negligible

83.

The __________ finish and the __________ finish are important for the die efficiency.

a)

smooth & layoff

b)

rough & layoff

c)

smooth & rough

d)

polished & layoff

84.

Piercing and Notching operations are carried out ________ bending

a)

Before

b)

After

c)

During

d)

Instead of

85.

Multi-station transfer presses are equipped with __________ stations

a)

Forming

b)

Cutting

c)

Welding

d)

Painting

86.

A key anchored in __________ prevents rotation of the collared pins.

a)

Bottom bolster

b)

Top die

c)

Guide bush

d)

Ram

87.

The tool is provided with a __________ between the collared cropping pins

a)

scrap cutter

b)

hammer

c)

wrench

d)

drill

88.

The pressure pad in bending die is in the __________ stage

a)

Fifth

b)

First

c)

Second

d)

Fourth

89.

The second bending stage lips the freed arm for _________________ .

a)

Curling

b)

Welding

c)

Cutting

d)

Pressing

90.

The cut band increases in width due to ____________ and ______________ of central arm.

a)

Bending & curling

b)

Stretching & shrinking

c)

Twisting & folding

d)

Heating & cooling

91.

The pivot pin should be strong enough to withstand _________________ .

a)

Bending force

b)

Shear force

c)

Tensile force

d)

Compressive force

92.

Grinding cutting stages for re-sharpening ____________ cutting die height.

a)

Decreases

b)

Increases

c)

Maintains

d)

Doubles

93.

To avoid bending it is necessary to provide ________ under the cutting die.

a)

shim

b)

bolt

c)

washer

d)

nut

94.

All the drawing stations are provided with _______________.

a)

Die cushion

b)

Punch

c)

Blank holder

d)

Guide pin

95.

The re-sharpening allowance of new drawing punches is ______.

a)

3 mm

b)

1 mm

c)

5 mm

d)

0.5 mm

96.

The top tool is provided with the ________ stripper which holds the strip.

a)

Spring

b)

Rubber

c)

Plastic

d)

Metal