2862 MACHINE TOOL TOOL RECONDITIONING RECONDITIONING AND AND OVERHAULING 5 Hrs/Week
16 Weeks /Sem. To!" To!" Hrs # 8$
O%&e'()es# After studying studying this paper, paper, the students students will have a sound knowledge knowledge in in 1. 2. 3. ". $. '. (. *. +.
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Su%-ect
nstruction ours ours eek
Semester
/0amination Assessment Assessment of !arks !arks
2*'2 4 !achine Tool
$
nternal
#oard /0am
Total
2$
($
188
*8
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I II
RECONDITIONING O3 MACHINE TOOLS MAINTENANCE ACTIVIT AND MAOR
Hrs 14 17
III IV
OVERHAUL O3 A MACHINE TOOLS RINCILES O3 ACCETTANCE TEST DETAILS 3OR TESTING VARIOUS MACHINE
14 17
TOOLS CONDITION 9ASED MAINTENANCE Re)(s(o, : Tes
17 12
V
DETAILED SLLA9US
U,(;I# RECONDITIONING O3 MACHINE TOOLS#
! Se<-e,'e o+ m!(,e,!,'e o0er!(o,# rocedure4 disassem%ly
of machine
tools, preparation
of disassem%ly4
disassem%ly sequence and rules4 e0amples of disassem%ly4 washing of parts4 fault finding4 preparation for assem%ly4 fitting in4 %alance of parts4 assem%ly of mechanisms and machines. % S'r!0(,=# mportance of scraping4 techniques of scraping4 tools used for scraping4 accuracy, tolerances and finish.
' Re'o,((o,(,= o+ m!'*(,(,= 0!rs# !ethods of determining wear of guides, Selection of repair method and sequence 9 !ethod of checking 9 :on 9linear 9 twist 9 parallelism of %ed way 9 universal %ridge 9 use and importance
5epairing parts with flat con-ugate4 surfaces4 general4 restoring parts like; %ed ways of lathe4 column way of a plain milling machine4 saddle ways of lathe4 ta%le saddle ways of a milling machine4 knee ways of a milling machine4 ta%le ways of a milling machine4 ways of press slides4 anvil %locks of hammers4 clamping %locks and wedges.
U,(;II# MAINTENANCE ACTIVIT AND MAOR OVERHAUL O3 A MACHINE TOOLS# ! M!(,e,!,'e# !aintenance 9
% E!m0"es o+ M!(,e,!,'e# /0ample of an engine lathe overhaul. nspecting and checking %efore repair4
% D(!" G!-=es#
squares4 spirit levels4 level
measurement %y water level4 alignment %y wire and measuring microscope.
' A"(=,me, %> Te"es'o0e# Alignment %y telescope and target4 magnitudes and direction of tolerances4 straightness of slide ways and flatness of ta%les4 alignment and true running of shafts4 lead or pitch error of lead screws4 pitch errors of gears and dividing errors of dividing heads.
U,(;IV# DETAILS 3OR TESTING VARIOUS MACHINE TOOLS# ! M(""(,= !, Ge!r '-(,= m!'*(,es# !illing and gear cutting machines 9 lathes 4 capstan and turret lathes, automatic lathes and vertical %oring machines.
% Gr(,(,= M!'*(,es# )rinding machines 4 drilling and %oring machines 4 Acceptance tests and maintenance of machine tools. Test specification 4 the accuracy with which the machine has %een manufactured 4 installation and leveling of the machines 4 testing the quality of slide ways and locating surfaces 4 testing the accuracy of the main spindle and of its alignment relative to other important parts of the machine
' A''-r!'> o+ *e ?ork ro-'e# Accuracy of the work piece produced on then machine 9 power requirements 4 S test charts and detailed procedure 9 lathe, milling machine, grinding machine 4 drilling machines. U,(;V# CONDITION 9ASED MAINTENANCE# a= Co,((o, mo,(or(,=# >ategories of condition monitoring4 methods4 on load monitoring techniques4 temperature monitoring 9 lu%ricating monitoring 9 leak detection 9 vi%rating monitoring 9 noise monitoring 9 corrosion monitoring. %= O++; "o! mo,(or(,=# >rack detection 9 leak detection 4 vi%ration testing 4 corrosion monitoring 4 general purpose monitoring techniques 4 the systematic application of >.!. c= L-%r('!(,= mo,(or(,=# rayons and pellets4 non contact sensors4 optical pyrometer, radiation pyrometer. The scanning <5 camera. !alfunction that can %e monitored thermally. e= V(%r!(o, !, ,o(se mo,(or(,=#
The cause of vi%ration and noise 9 measurement 9 equipment. The vi%ration or noise signals 4 vi%ration monitoring techniques4 total signal monitoring 9 peak signal monitoring figure of merit4 shock pulse monitoring. Te 9ook#
1. ndustrial maintenance %y )arg 6>o 2. !anagement of industrial maintenance %y A. ?elley 6 !.@.arris Re+ere,'e %ook# Testing of machines Tools %y <5.)eorg schlesinger pergamon press
