7/24/2019 MTD Question Bank for Chapt 3&4

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Question Bank

Sub - Machine Tool DesignChapter No 3 & 4

1 !o" resultant sti#ness is calculate$ i% elastic eleents are arrange$ in

series an$ parallel'

( )hat are the %unctions an$ re*uireents o% spin$le unit'

3 !o" optiu spacing bet"een spin$le supports is $eci$e$'

4 +,plain "ith sketches preloa$ing o% angular contact ball bearing an$ its

a$antages'

. )hat is e#ect o% achine tool copliance on achining accurac/ 0

process capabilit/'

Derie an e,pression %or total copliance o% achine tool

2 )hich are the arious criteria to select t/pes o% bearings' ie e,aples'

!o" nuber o% supports5 their locations an$ balancing pla/s role in

sti#ness o% achine tool spin$le'

6 Discuss the basic $esign an$ %unctional re*uireents o% gui$e"a/s use$

%or achine tools7 Dra" a sketch o% gui$e"a/ pro8le use$ %or lathe7

9 Derie an e,pression %or total $e:ection o% the spin$le nose $ue to

ben$ing an$ $ue to copliance o% spin$le supports7

1; is being achine$ bet"een centre

=? > an$ =B> on a lathe sho" that the iniu $e:ection@in o% thesha%t is gien as

@inA 0 1 @?a,

)here AE? 0 EB A Sti#ness o% centre ?!ea$ stock 0sti#ness

o% centre B Tail stock an$ @? a, A F@0E? "here F@ is ra$ialcoponent o% cutting %orce

11 Derie the e,pression %or the optiu $esign criteria %or strength

an$ sti#ness %or achine tool structure

1( Copare :at an$ c/lin$rical gui$e"a/s on the %ollo"ing points

a ?ccurac/ o% alignent

b Stabilit/ o% sli$ing eber

7/24/2019 MTD Question Bank for Chapt 3&4

2/2

Question Bank

Sub - Machine Tool Designc Chip $isposal

$ )ear

13 )ith the help o% sketches e,plain arious t/pes o% sli$e "a/s use$

in achine tool in$icating their a$antages an$ liitations7

14 Discuss the %unctions o% spin$les an$ $ra" the sketches o% spin$les

use$ in lathe an$ $rilling achine

1. Sketch the $i#erent t/pes o% sli$e"a/s an$ their cobinations use$

in achine tools7 State the application o% each one7

12 State the %actors in:uencing %or spin$le $esign %or the rigi$ an$

soun$ operation o% achine tools

1 Design criteria an$ $erie a e,pression consi$ering aerage

pressure acting on sli$e"a/s %or "ear resistance7

16 Design criteria o% sli$e"a/s %or sti#ness

19 Design consi$ering o% anti%riction gui$e"a/s an$ its a$antages7

(; Design consi$ering o% ball scre" an$ sli$ing %riction po"er scre"s

(1 Design consi$eration in sli$ing bearings use$ %or spin$les7

(( +,plain iportance o% bearing preloa$ing in spin$le $esign

(3 Metho$s o% a$Gusting clearances in sli$e"a/s 5e,plain "ith sketches

(4 +,plain process capabilit/ o% a achine tool an$ ho" it is iproe$

He% Book Machine tool +ngineering b/ Nagpal 7 Fage No 332