MACHINING PROCESS 2 MARK.docx

8/9/2019 MACHINING PROCESS 2 MARK.docx

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BHARATHIYAR COLLEGE OF ENGINEERING AND TECHNOLOGY

KARAIKAL

DEPARTMENT OF MECHANICAL ENGINEERING

TWO MARKS QUESTION AND ANSWER

SUBJECT : MET 45/ MACHINING PROCESS

YEAR : II YEAR A & B SEC

UNIT I

1. W!" !#$ "$ %!#'() '*$#!"'+) ,!+ -$ *$#'#$0 '+ ! !"$2

1) Turning

2) Facing.

3) Forming.

4) Knurling5) Chamfering

6) Thread cutting.

7) Drilling

8) oring

!) "ece##ing

1$) Ta%%ing

11) &roo'ing etc.

3. W!" !#$ "$ *#+,*$ *!#") ' ! !"$2l)ed

2) (ead#toc

3) Tail#toc

4) Carriage

5) Cro##*#lide

6) Tool %o#t

. W!" ) "$ !+ #$("$) ' ! !"$ -$02

The lathe +ed #hould +e 'er, #trong to -ith#tand cutting force# and 'i+ration#

during machining.

4. W!" !#$ "$ ()$) ' $!0)"',62

1 (ead#toc carrie# a hollo- #%indle -ith no#e to hold the -or %iece.

2.To mount the dri'ing and #%eed changing mechani#m#.


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5. W!" ) "$ !+ 0$#$+,$ -$"7$$+ %$ ,$+"$# !+0 0$!0 ,$+"$#2

i. /i'e center dri'e# and rotate# along -ith the -or %iece#.

ii. Dead center i# dri'en +, head#toc and it 0u#t #u%%ort# #u%%ort the other end of

the -or.

8. S"!"$ "$ %!#'() *!#") '(+"$0 '+ "$ ,!##!9$.

a. addle

+. Com%ound re#t

c.Cro## #lide

d. Tool %o#t.

7. W!" ) ! ,'*'(+0 #$)"2

mem+er or %art -hich i# mounted on the to% of the cro## #lide ha'ing a +a#e

graduated in degree#.

. L)" !+; '(# ";*$) ' !"$)2

1) ngine lathe.

2) ench lathe.

3) Tool room lathe

4) emi*automatic lathe.

5) utomatic lathe.


3/23


4/23

3>. D$+$ +9 '*$#!"'+.

Filing i# the %roce## of remo'ing +ar# #har% corner# and feed mar# on a -or

%iece +, remo'ing 'er, #mall amount of metal.

31. D$+$ "$ *#',$)) @9#''%+9@.

&roo'ing i# the %roce## of reducing the diameter of the -or %iece o'er a 'er,

narro- #urface.

33. P!#"+9 ' ) !+ '*$#!"'+ '

Cutting a -or %iece after machining.

3. W!" ) #$!+9 !+0 -'#+9 '*$#!"'+ 2

"eaming * t i# the o%eration of fini#hing and #ie a alread, drilled hole.

oring * t i# the %roce## of enlarging a alread, drilled hole.

34. S"!"$ "$ *'#"!+" #$("$) ' ,!*)"!+ !+0 "(##$" !"$.

l)ed

2) (ead #toc.

3) Turret head

4) addle

5)Cro## #lide.

35. W!" ";*$ ' $,!+) ) ()$0 '# +0$+9 "$ "(##$" $!0 '# "$ +$"'*$#!"'+2

&ene'a or nde9ing mechani#m.

38. N!$ !+; '(# 7'#6 '0+9 0$%,$).

.1) Collet#

2) Chuc#

3) Fi9ture#

4) o-er chuc#

3?. N!$ !+; '(# "'' '0+9 0$%,$)1) ;ulti%le cutter holder.

2)


5/23


6/23

. W!" !#$ "$ 0$#$+" !0()"$+") !0$ + R'(+0 ,'(+ 0#+9

!,+$2

1. rm and ta+le mo'e# u% and do-n to accommodate the -or %iece.

2. rm and ta+le ma, +e mo'ed in an arc u% to 18$ around the column

3. The ta+le ma, +e rotated 36$ a+out it# o-n a9i#.

. L)" "$ *!#" +%'%$0 + "$ (* #9" 0#+9 !,+$2

1. a#e

2. Column

3. Ta+le

4. (ead

5. %indle =uill and drill head a##em+l,.

11. L)" "$ *!#" +%'%$0 + "$ #!0! 0#+9 !,+$2

1. a#e

2. Column

3. "adial arm

4. Drill head

13. W!" !#$ "$ 7'#6 '0+9 0$%,$) ()$0 + 0#+9 !,+$2

1. T +olt and clam%

2. te% +loc

3. ngle %late

4. Drill 0ig.

1. W!" !#$ "$ 0$#$+" '*$#!"'+) *$#'#$0 + 0#+9 !,+$2

1.Driling

2. "eaming

3.oring

4. Counter +oring

5. Counter #ining6. %ot facing

7. Ta%%ing

8./a%%ing

!.&rinding.


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14. W!" ) #$!+92

t i# the #econdar, o%eration after the drilling o%eration ha# +een %erformed to

%roduce the occurate hole or fini#h the hole.

15. W!" ) -'#+92

t i# u#ed to enlarge the hole +, mean# of ad0u#ta+le cutting tool -ith onl, one

cutting edge.

18. W!" ) ,'(+"$# -'#+92

t i# u#ed to enlarge the end of the hole c,lindricall, and the enlarge hole form# the

#=uare #houlder# -ith original hole.

1?. W!" ) "!**+92

t i# the o%eration to %roduce internal thread# +, u#ing ta% tool.

1. L)" "$ ";*$) ' 0#2.

1. Flat or #%ade drill

2. traight fluted drill

3. T-o li% t-i#t drill

4. Centre drill.

1


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34. W!" ) ,#,(!# !+02

The c,lindricall, ground #urface ad0acent to the cutting edgeon the leading edge

of the land.

35. W!" ) "$ !0%!+"!9$ ' ("$2

The flute i# the helical groo'e. t i# u#ed to remo'e the chi% through the helical

groo'e and the cutting fluid -ill enter through the flute #urface.

38. W!" ) *#!#; ,$!#!+,$2

The %ortion of the land remo'ed to %ro'ide clearance immediatel, +ehind the

cutting edge.

3?. W!" ) )$,'+0!#; ,$!#!+,$2

The %ortion of the land remo'ed to %ro'ide clearance +ehind the %rimar, clearance

or circular land.

UNIT III

1. W!" ) )!*$#2

The #ha%er i# a reci%rocating t,%e of machine tool intended to %roduce flat #urface.

The#e #urface# ma, +e horiontal 'ertical or inclined.

3. C!)); "$ )!*$# !,,'#0+9 "' "$ #$,*#',!"+9 ' #!2i. Cran t,%e

ii. (,draulic t,%e

iii. &eared t,%e.

. C!)); "$ )!*$# !,,'#0+9 "' "$ "#!%$ !+0 *')"'+ ' "$ #!2

a. (oriontal t,%e

+. ?ertical t,%e

c. Tra'eling head t,%e.

4. C!)); "$ )!*$# !,,'#0+9 "' "$ 0$)9+ ' "!-$2a. tandard t,%e

+. >ni'er#al t,%e.

5. C!)); "$ )!*$# !,,'#0+9 "' "$ ";*$ ' ,(""+9 )"#'6$2

a. u#h t,%e

+. Dra- t,%e


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8. L)" "$ 0$#$+" ";*$) ' *!#") +%'%$0 + "$ )!*$#2

a. a#e

+. Column

c. Cro## rail

d. addle

e. Ta+le

f. "am

h. Tool head.

?. L)" "$ *!#") + "'' $!02

a. -i'el +a#e

+. ?ertical #lide

c. %ron

d. Tool %o#t

. L)" "$ *!#") + !*#'+2

a. Cla%%er +o9

+. Cla%%er +loc

c. Tool %o#t


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1. W!" ) "$ ()$ ' )!*$# 0'9 + ;0#!(, )!*$# $,!+)2

t i# u#ed to change the %o#ition of the flo- to facilitate the reci%rocating motion.

14. W!" !#$ "$ !0%!+"!9$) ' ;0#!(, )!*$# $,!+)2

a. The cutting and return #%eed are %artiall, con#tant throughout the #troe.

+. nfinite num+er of cutting ma, +e o+tained from ero to ma9imum 'alue and

control ea#ier.

15. W!" !#$ "$ 7'#6 '0+9 0$%,$) ()$0 + )!*$#2

1. Clam%ing the 'i#e

2. Clam%ing on the ta+le

3. Clam%ed to the angular %late.

18. W!" !#$ "$ 0$%,$) ()$0 "' '0 "$ 7'#6 + "' "$ "!-$2a. T +olt and clam%#

+. to% %in#

c. tri% and #to% %in#

1?. W!" !#$ "$ 0$#$+" '*$#!"'+) *$#'#$0 -; ()+9 )!*$#2

1. (oriontal #urface

2. ?ertical #urface

3. ngular #urface

4. Cutting #lot and e, -a,#

5. rregular #urface

1. W!" ) *!+$#2

The %laner lie a #ha%er i# a machine tool %rimaril, intended to %roduce %lane and

flat #urface# +, a #ingle %oint cutting tool#. it i# u#ed to machining a large -or

%iece -hich cannot accommodate +, #ha%er ta+le.

1


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3>. W!" !#$ "$ ";*$) ' *!+$#2

a. Dou+le hou#ing %laner

+.


12/23

3?. L)" "$ $,!+) ()$0 "' 0#%$ "$ "!-$2

1.


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5. L)" "$ )"!+0!#0 ,!*+9 0$%,$) ()$0 + *!+$#.

1. (ea', dut, 'ice

2. T +olt and clam%#

3. ngle %late

4. to%#

8. W!" ) "$ ()$ ' *!+$# !,62

t i# u#ed to #u%%ort the o'erhanging %art#.

?. L)" "$ *!+$# '*$#!"'+.

1. (oriontal #urface

2. ?ertical #urface

3. lanning cur'ed #urface#

4. lanning #lot# and groo'e#.

W!" ) )'""$#2

t i# fall# under the categor, of reci%rocating t,%e# of machine tool #imilar to

#ha%er.

< W!" ) "$ 0$#$+,$ -$"7$$+ )!*$# !+0 )'""$#2

1. n #ha%er ram reci%rocate a+out horiontal a9i# +ut #lotter the ram reci%rocate

a+out 'ertical a9i#.

4>. W!" ) "$ 0$#$+,$ -$"7$$+ %$#",! )!*$# !+0 )'""$#2n 'ertical #ha%er the holding the tool ma, al#o reci%rocate at an angle to the

horiontal ta+le in addition to the 'ertical #troe.

41. W!" ) "$ ()$ ' )'""$#2

t i# u#ed to cutting groo'ee,-a,and #lot# of 'ariou# #ha%e#.

43. W!" !#$ "$ ";*$) ' )'""$#2

1. uncher #lotter

2. reci#ion #lotter

4. W!" ) *(+,$# )'""$#2

The %uncher #lotter i# hea', rigid machine de#igned for remo'al of large amount

of -or%iece#. t i# dri'en +, a #%iral %inion me#hing -ith the rac teeth on the

under #ide of the ram.


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44. W!" !#$ "$ *!#") +%'%$0 + )'""$#2

1. a#e

2. Column

3. addle

4. Cro## #lide

5."otating ta+le

6. "am and tool head.

45. L)" "$ #! 0#%+9 $,!+) ()$0 + )'""$#.

1. @hith -orth =uic return mechani#m

2. ?aria+le #%eed re'er#i+le motor dri'e mechani#m.

3. (,draulic dri'e.

48. L)" "$ $$0 +%'%$0 + )'""$#.

1. /ongitudinal feed2. Cro## feed

3. Circular feed.

4? L)" "$ )'""$# '*$#!"'+.

1. ;achining flat #urface#

2. C,lindrical #urface#

3. rregular #urface#.

4. lot e, -a,# and groo'e#.

UNIT

1. E*!+ "$ ,(""+9 )!*+9 *#',$))2

The re=uired #ha%e of metal i# o+tained +, remo'ing the un-anted material from

the -or %iece

in the form of chi%# i# called cutting #ha%ing. 9am%le Turning Drilling ;illing

oring etc.

3. C!)); "$ #$!"%$ '"'+ -$"7$$+ 7'#6 *$,$ !+0 ,(""+9 "''.

:i) "otation of -or again#t the tool. 9am%le Turning

:ii) "otation of tool again#t -or %iece. 9am%le Drilling ;illing

:iii) linear mo'ement of the -or %iece again#t the tool. 9am%le laner

:i') /inear mo'ement of the tool again#t the -or. 9am%le ha%er.


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. W!" !#$ ! "$ 0$#$+" ";*$) ' ,(""+9 "''2

:i) ingle %oint cutting tool

:ii) ;ulti%l, %oint cutting tool.

4. C!)); "$ %!#'() !+9$) + ,(""+9 "''2

1) ac rae angle

2) ide rae angle

3) nd relief angle

4) ide relief angle

5) ide cutting angle

6) nd cutting angle.

5. W!" ) "'' )9+!"(#$2

The 'ariou# angle# of tool# are mentioned in a numerical num+er in %articular

order. That order i# no-n a# tool #ignature.

8. W!" ) $$," ' -!,6 #!6$ !+9$ !+0 $+"'+ "$ ";*$)2

ac rae angle of tool i# increa#e# the #trength of cutting tool and cutting action.

t can +e cla##ified into t-o t,%e#.

1. o#iti'e rae angle.

2. Aegati'e rae angle.

?. W!" ) )0$ #!6$ !+9$ !+0 M$+"'+ ") $$,")2

The angle +et-een the tool face and the line %arallel to the +a#e of the tool. t i#

u#ed to control chi% flo-.

. W!" ) ,$!#!+,$ !+9$ !+0 $+"'+ "$ ";*$)2

The#e are the #lo%e# ground do-n-ard# from the cutting edge#. The clearance

angle can +e cla##ified into t-o t,%e#.

i ide relief angle.

ii. nd relief angle.


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d. To machine the metal +elo- recommended cutting #%eed#.

11. W$+ 7 "$ +$9!"%$ #!6$ !+9$) -$ ()$02

a. To machine high #trength allo,#.

+. The machine tool# are more rigid.

c.The feed rate# are high.

d. To gi'e hea', and interru%ted cut#.

13. C!)); "$ ";*$) ' $"! ,(""+9 *#',$))2

The metal cutting %roce##e# are mainl, cla##ified into t-o t,%e#.

a.


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:i') /arge rae angle

:') har% cutting edge

:'i) ro%er cutting fluid

:'ii) /o- friction +et-een tool face and chi%#.

1


18/23

34. W!" !#$ "$ ,(""+9) '#,$) !,"+9 '+ "$ ,(""+9 "''2

During the cutting %roce## the follo-ing three com%onent of cutting force# acting

mutuall, right angle#.

a. Feed force F9 act# in a horiontal %lane +ut in the Direction o%%o#ite to feed.

+. Thru#t force F, act# in a direction %er%endicular to the generated #urface.

c. Cutting force F in the direction of the main cutting motion.

38. W!" !#$ "$ !))(*"'+) !0$ -; $#,!+" ,#,$2

a. The chi% formation -ill +e continuou# -ithout +uilt u% edge.

+. During cutting %roce## cutting 'elocit, remain# con#tant

c. The cutting tool ha# a #har% cutting edge #o that it doe# not mae flan contact to

the -or%iece.

3?. W!" ) $"! #$'%! #!"$2

t i# defined a# the 'olume of metal remo'ed in unit time. t i# u#ed to calculatetime re=uired to remo'e #%ecified =uantit, of material from the -or %iece.

3. W!" !#$ "$ !))(*"'+) !0$ + $$ !+0 S!$#) "$'#;2

a. The -or ahead of the tool +eha'e# a# ideal %la#ticma##

+. There e9i#t# a #hear %lane -hich #e%arate# the chi% and -or %iece

c. Ao hardening in chi% occur#.

3


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d. h,#ical %ro%ertie# of -or material#.

e. ;ethod of %roduction of the -or material#.

3. W!" !#$ ! "$ "'' %!#!-$) !$,"+9 "$ !,+!-";2

a. Tool geometr, and tool material.

+. Aature of engagement of tool -ith the -or.

c. "igidit, of tool.

. W!" !#$ "$ !,+$ %!#!-$) !$,"+9 "$ !,+!-";2

a. "igidit, of machine.

+. o-er and accurac, of the machine tool.

4. H'7 "$ !,+!-"; ,!+ -$ $%!(!"$02

The follo-ing criteria #ugge#ted for e'aluating machina+ilit,.

a. Tool life %er grind +. "ate of remo'al %er tool grind

c. ;agnitude of cutting force# and %o-er con#um%tion. urface fini#h.

e. Dimen#ional #ta+ilit, of fini#hed -or.

f. (eat generated during cutting.

g. a#e of chi% di#%o#al.

h. Chi% hardne## #ha%e and #ie.

5. M$+"'+ "$ !0%!+"!9$ ' 9 !,+!-";2

a. &ood #urface fini#h can +e %roduced

+. (igh cutting #%eed can +e u#ed

c. /e## %o-er con#um%tion

d. ;etal remo'al rate i# high

e. /e## tool -ear.

8. W!" ) !,+!-"; +0$2

t i# a com%ari#on of machina+ilit, of different material to #tandard material. >

material #tandard for 1$$ machina+ilit, i# 1112 hot rolled #teel.

;achina+ilit, inde9 Cutting #%eed of #tandard #teel for 2$ minute# tool life

Cutting #%eed of metal in'e#tigated for 2$ minute# tool life

?. C!)); "$ "'' 7$!#2

The tool -ear i# generall, cla##ified a# follo-#

:i) Flan -ear or crater -ear

:ii) Face -ear

:iii) Ao#e -ear


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. H'7 "'' $ ) 0$+$02

Tool life i# defined a# time ela%#ed +et-een t-o con#ecuti'e tool re #har%ening.

During thi# %eriod tool #er'e# effecti'el, and efficientl,.

. W!" !#$ "$ !,"'#) !$,"+9 "'' $2

i. Cutting #%eed

ii. Feed and de%th of cut

iii. Tool geometr,i'. Tool material

'. Cutting fluid

'i. @or material

'ii. "igidit, of -or tool and machine.

43. W!" !#$ ! "$ !,"'#) ,'+)0$#$0 '# )$$,"'+ ' ,(""+9 )*$$02

i. Tool life

ii.ro%ertie# of material +eing machined

iii."ate of feed

i'.De%th of cut

'.Tool geometr,.

?i.Cutting fluid u#ed

'ii.T,%e of machining %roce##

'iii.urface fini#h to +e o+tained.

4. W!" !#$ "$ !,"'#) )'(0 -$ ,'+)0$#$0 '# )$$,"'+ ' "'' !"$#!)2

i. ?olume of %roduction

ii. Tool de#ign

iii. T,%e of machining %roce##i'. h,#ical E Chemical %ro%ertie#

'. "igidit, and condition of machine.

44. W!" !#$ "$ *'#"!+" ,!#!,"$#)",)2

i. (ot hardne##

ii. @ear re#i#tance


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iii. Toughne##

i'. /o- friction

'. Co#t of tool

'i. (igh thermal conducti'it,

'ii. "e#i#tance to thermal #hoc

'iii. a#, to grind and #har%en.

45. N!$ !+; '(# "'') !"$#!2

i. Car+on tool #teel

ii. (igh #%eed #teel

iii. Cemented car+ide#

i'. Ceramic#

'. Diamond#

48. W!" ) "$ (+,"'+ ' ,(""+9 (0)2i. t i# u#ed to cool the cutting tool and -or %iece

ii. t lu+ricate# the cutting tool and thu# reduce# the co*efficient of friction +et-een

tool and -or

iii. t im%ro'e# the #urface fini#h a# #tated earlier

i'. t cau#e# the chi%# to +rea u% into #mall %art#

'. t %rotect# the fini#hed #urface from corro#ion

'i. t -a#he# a-a, the chi%# from the tool. t %re'ent# the tool from fouling

'ii. t %re'ent# corro#ion of -or and machine.

4?. W!" !#$ "$ *#'*$#"$) ' ,(""+9 (02

i. t #hould ha'e good lu+ricant %ro%ertie#

ii. (igh heat a+#or+ing ca%acit,

iii. t #hould ha'e a high #%ecific heat high heat conducti'it, and high film co*

efficient

i'. (igh fla#h %oint.

'. t #hould +e odorle##

'i. t #hould +e non*corro#i'e to -or and tool

'ii.t #hould ha'e lo- 'i#co#it, to %ermit free flo- of the li=uid.

4. W!" ) -(" (* $09$2

During cutting %roce## the interface tem%erature and %re##ure i#.

4


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ii.The chi% flo-# o'er the tool face and the direction of chi%*flo- 'elocit, i#

normal to the cutting edge.

iii.The cutting edge clear# the -idth of the -or %iece on either end#. :i.e. Ao #ide

flo-)

i'The ma9imum chi% thicne## occur# at it# middle.


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. W!" ) %$#",! +9 !,+$2

n 'ertical milling machine the #%indle i# mounted 'ertical or %er%endicular to the

ta+le.

4. W!" !#$ "$ *!#") ()$0 + "$ ,'(+ !+0 6+$$ ";*$ +9 !,+$2

1. a#e

2. Column

3. Knee

4.Ta+le

5.

MACHINING PROCESS 2 MARK.docx

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