IS/ISO 9962-2: Manually Operated Drafting Machines, Part 2: Characteristics, Performance, Inspection and Marking

14 Pages·1992·1.3 MB·English

by  Bureau of Indian Standards

इंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS/ISO 9962-2 (1992): Manually Operated Drafting Machines,
Part 2: Characteristics, Performance, Inspection and
Marking [PGD 22: Educational Instruments and Equipment]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

IS/IS0 2-2699 : 1992
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lndian Standard
YLLAUNAM DETAREPO GNITHGUARD
SENIHCAM
PART 2 CHARACTERISTICS, PERFORMANCE, INSPECTION AND MARKING
ICS 10 04.001.

@ SIB 6991
BUREAU OF INDIAN STANDARDS
KANAM ,NAVAHB 9 RUDAHAB HAHS RAFAZ GRAM

NEW IHLED 200011
April 6991 echP puorG 4
lacitpO dna lacitamehtaM stnemurtsnI lanoitceS Committee, ML 02
LANOITAN FOREWORD
sihT naidnI dradnatS hcihw si lacitnedi htiw 0SI 2-2699 : 2991 yllaunaM‘ detarepo gnithguard
senihcam - traP 2 ,scitsiretcarahC ecnamrofrep noitcepsni dna marking’, deussi yb lanoitanretnI
noitazinagrO rof noitazidradnatS ,)OSI( saw detpoda yb eht uaeruB fo naidnI sdradnatS no eht
noitadnemmocer fo eht lacitpO dna lacitamehtaM stnemurtsni lanoitceS Committee ML( )02 dna
lavorppa fo thgiL lacinahceM gnireenignE noisiviD ,licnuoC
ehT dradnats si gnieb dehsilbup ni gniwollof eerht :snap
traP I ,snoitinifeD noitacifissalc dna ;noitangised
traP 2 ,scitsiretcarahC ,ecnamrofrep noitcepsni dna marking; dna
traP 3 snoisnemiD fo elacs elur kcuhc setalp rednu( .)noitaraperp
ehT stnemeriuqer fo gnithguard enihcam erew reilrae derevoc ni SI 7822 : 0791 noitacificepS‘ rof
gnitfard senihcam (first revision)’ hcihw lliw eb nwardhtiw retfa noitacilbup fo lla eerht .strap
SI 7822 : 0791 saw osla gnirevoc eht noitacifitrec fo gnithguard senihcam hcihw lliw won eb derevoc
yb trap 2 fo 0SI/SI 2-2699 : .2991
ehT txet fo 0SI dradnatS sah neeb devorppa sa elbatius rof noitacilbup sa naidnI dradnatS tuohtiw
.snoitaived niatreC snoitnevnoc ,era ,revewoh ton lacitnedi ot esoht desu ni naidnI .sdradnatS
noitnettA si ylralucitrap nward ot eht :gniwollof
a) Wherever eht sdrow lanoitanretnI‘ ’dradnatS raeppa gnirrefer ot siht ,dradnats yeht dluohs
eb daer sa naidnI‘ .’dradnatS
b) Comma (J sah neeb desu sa a lamiced marker elihw ni naidnI sdradnatS eht tnerruc ecitcarp
si ot esu a tniop (.) sa eht lamiced marker.
nI siht detpoda ,dradnats ecnerefer sraeppa ot niatrec lanoitanretnI sdradnatS rof hcihw naidnI
sdradnatS osla .tsixe ehT gnidnopserroc naidnI sdradnatS hcihw era ot eb detutitsbus ni rieht ecalp
era detsil woleb gnola htiw rieht eerged fo ecnelaviuqe rof eht snoitide :detacidni
International Standard Corresponding Indian Standard Degree of

Equivalence

0SI l-2699 : 2991 0SI/SI l-2699 : 2991 yllaunaM lacitnedI
detarepo gnithguard senihcam : traP 1
,snoitinifeD noitacifissalc dna -angised
noit
0SI 3-2699 : 4991 0SI/SI 3-2699 : 4991 yllaunaM lacitnedI
detarepo gnithguard senihcam : traP 3
snoisnemiD fo elacs elur kcuhc
setalp rednu( noitaraperp )
nI eht txet fo 0SI ,2-2699 ti si denoitnem taht 0SI 3-2699 si ot eb .dehsilbup ehT dradnats sah won
neeb dehsilbup sa 0SI -2699 3 : 4991 sa detacidni .evoba
For eht esoprup fo gnidiced rehtehw a ralucitrap tnemeriuqer fo siht dradnats si deilpmoc ,htiw eht
lanif ,eulav devresbo or ,detaluclac gnissserpxe eht tluser fo a tset fo ,sisylana llahs eb dednudr ffo
ni ecnadrocca htiw SI 2 : 0691 seluR‘ rof gnidnuor ffo laciremun seulav (revised)‘. ehT rebmun fo
tnacifingis secalp deniater ni eht dednuor ffo eulav dluohs eb eht same sa taht fo eht deificeps eulav
ni siht .dradnats
ehT tcudorp may osla eb marked htiw eht dradnatS Mark.
ehT esu fo eht dradnatS Mark si denrevog yb eht snoisivorp fo eht Bureau of lndian Standards Act,
6891 dna eht seluR dna snoitalugeR made .rednuereht ehT sliated fo snoitidnoc rednu hcihw eht
ecnecil rof eht esu fo, dradnatS Mark may eb detnarg ot eht srerutcafunam or srecudorp may eb
deniatbo from eht uaeruB fo naidnI .sdradnatS
0SI/SI 2.2699 : 2991
Indian Standard
YLLAUNAM
DETAREPO GNITHGUARD
SENIHCAM
PART 2 CHARACTERISTICS, PERFORMANCE, INSPECTION AND MARKING
1 Scope 4 Requirements
sihT trap fo OS1 2699 seificeps eht ecnaraeppa dna
4.1 Appearance and construction
,,noitcurtsnoc ,ecnamrofrep noitcepsni dna marking
fo yllaunam detarepo gnithguard .senihcam
ehT ecnaraeppa dna noitcurtsnoc fo yllaunam -repo
deta gnithguard senihcam llahs ylpmoc htiw eht
scitsiretcarahc nevig ni 1.1.4 ot .51.1.4
1.1.4 llA strap llahs eb made fo yltneiciffus gnorts
dna digir slairetam dna llahs eb derutcafunam dna
2 Normative references
delbmessa htiw .erac
ehT gniwollof sdradnats niatnoc snoisivorp ,hcihw
2.1.4 gnitaoC or ecafrus tnemtaert fo eht suoirav
hguorht ecnerefer ni siht ,txet etutitsnoc snoisivorp
strap llahs eb deirrac tuo htiw erac ni redro ot pre-
fo siht trap fo 0SI .2699 tA eht time fo ,noitacilbup
tnev segnahc ni ,ruoloc gnileep or .gnitsur
the snoitide detacidni erew .dilav llA sdradnats era
tcejbus ot ,noisiver dna seitrap ot stnemeerga desab
no siht trap fo 0SI 2699 era degaruocne ot -itsevni 3.1.4 noitaudarG senil no eht rotcartorp dna -rev

etag eht ytilibissop fo gniylppa eht most tnecer -ide rein llahs eb raelc dna fo neve htdiw dna llahs eb

snoit fo eht sdradnats detacidni .woleb Members fo eerf fo ,sevruc ,gnicafed gnikni errors, .cte
CEI dna 0SI niatniam sretsiger fo yltnerruc dilav
lanoitanretnI .sdradnatS 4.1.4 Numbers dna rehto snoitacidni no eht pro-
rotcart dna eht reinrev llahs eb raelc dna eerf fo
0SI ,2991:1-2699 yllaunaM operated draughting ma- ,snoissimo errors, ,gnicafed gnikni errors, .cte
senihc - Part 1: Definitions, classification and des-
ignation. 5.1.4 ehT gnixif bracket llahs wolla eht yllaunam
detarepo gnithguard enihcam ot eb dehcatta .ylmrif
IS0 9962-3:-‘1, Manually operated draughting ma-
chines - Part 3: Dimensions of elacs rule chuck
6.1.4 ehT tcatnoc gnitsujda ,wercs fi ,dedivorp llahs
plates.
etarepo ylhtooms dna htiw .esae
7.1.4 ehT snoisnemid fo eht sevoorg no eht elacs
elur gnitnuom etalp llahs wolla ylbmessa htiw elacs
elur kcuhc setalp ni ecnadrocca htiw 0SI .3-2699
3 Definitions
8.1.4 tI llahs eb elbissop ot hcatta elacs selur ot eht
For eht sesoprup fo siht trap fo 0SI ,2699 eht -lfed elacs elur gnitnuom etalp dna ot xif meht yleruces
snoitin nevig ni 0SI l-2699 .ylppa htiw .esae
1) oT eb .dehsilbup
1
0SI/SI 2-2699 : 2991
4.1.9 ehT elacs elur gnitnuom etalp llahs etator 31.1.4 ehT msinahcem llahs etarepo ,ylhtooms dna
.ylhtooms tuohtiw yalp dna lamronba .esion
4.1.14 nI lacitrev enalp ,esu eht daeh llahs niamer
01.1.4 ehT ecnerefer enil revel llahs etarepo
yranoitats ta yna noitisop no eht gniward .draob
ylhtooms dna gnikcol llahs eb .eruces
4.1.15 latnoziroH dna lacitrev sekarb llahs etarepo
ylhtooms dna gnikcol llahs eb .eruces
11.1.4 ehT gnixedni revel llahs etarepo ylhtooms
dna eht gninoitisop yb snaem fo eht gnixedni etalp
llahs eb .eruces 2.4 ecnamrofreP
ehT ecnamrofrep fo yllaunam detarepo gnithguard
21.1.4 ehT elgna revel llahs etarepo ylhtooms dna senihcam llahs yfsitas eht stnemeriuqer nevig ni -at
gnikcol llahs eb .eruces elb .1
elbaT 1 - ecnamrofreP stnemeriurcer
-
No. ecnamrofreP Items to be Measuring method Measuring Permissible value
measured instruments or deviation
4.2.1 Accuracy of -orp ecnedicnioC fo ekaM eht orez tniop fo eht Magnifier with Minimum reading
rotcart dna reinrev rotcartorp dna reinrev edicnioc with an magnification of of the vernier: 10’
snoitaudarg reinrev -udarg arbitrary graduation on not less than x 5 or 5’
snoita the protractor, and meas-
ure the difference be-
tween the maximum
graduation on the vernier
(excluding any auxiliary
graduation) and the maxi-
mum graduation on the
protractor.
Carry out this measure-
ment within f 90” of the
normal horizontal pos-

ition, and take the maxi-

mum value among the
measurements as the
measured value.
Where lhe reference line
is adjustable and is
equipped with a vernier,
the same measurements
shall be carried out.
IS/IS0 2-2699 : 2991
Items to be Measuring Permissible value
No. Performance Measuring method
measured instruments or deviation
4.2.2 Accuracy of at-’ Coincidence of Measure the difference Magnifier with Minimum reading
tachment of pro- vernier and pro- between the indicated magnification of of the vernier: 10’
tractor and tractor gradu- graduation on the pro- not less than x 5 or 5’
indexing plate ations when index tractor and the zero point
is used of the vernier scale when
the scale rule mounting
plate is positioned at each
index of the indexing plate
by using the indexing le-
Take the maximum value
of the measurements as
the measured value.
4.2.3 Deviation of pro- Deviation between Mount the manually oper- Inspection drawing Minimum reading
tractor gradu- the protractor ated draughting machine board, inspection of the vernier: 10’
ations and graduations and on an inspection drawing scale rule, and or 5’
eccentricity of pro- standard angle board and attach a hori- magnifier with
tractor lines zontal inspection scale magnification of
rule. not less than x 5
, Release the indexing
plate, loosen the angle
I lever, and make the zero
point of the vernier coin-
cide with the zero point
of the protractor to pos-
ition the index. Loosen the
reference line lever, and
make the horizontal scale
rule coincide with a hori-
zontal standard line. Lock
the reference line lever.
Release the indexing
plate again and make the
scale rule coincide with

an arbitrary standard an-

gle line to measure the
deviation of the protractor
graduation.
Carry out these measure-
ments at intervals of 15”
within f 90” of the normal
horizontal position of the
inspection scale rule.
Take the maximum value
of the measurements as
the measured value.

3
IS/IS0 2-2699 : 2991
Items to be Measuring Permissible value
No. Performance Measuring method
measured instruments or deviation
4.2.4 Accuracy of index- Deviation between Position the indexing plate inspection drawing f 0,3 mm at the
ing plate divisions the scale rule pos- at the zero point of the board, inspection end point of the
itioned by the protractor, make the hori- scale rule and scale rule gradu-
indexing plate and zontal inspection scale magniffer with ation lines
standard angle rule coincide with a hori- magnification of
lines zontai standard line and not less than x 5 in addition, when
lock it by using the refer- the scale rule is
ence line lever or fine ad- returned to the
juster. zero point after
the measurement,
Place the head at the it shall accurately
centre of the standard return to the orig-
angle lines, position the inal position
scale rule mounting plate
on the arbitrary indexing
plate at intervals of 15”
within f 90” of the normal
horizontal position of the
inspection scale rule,
make the standard angle
line of the angle coincide
with the scale rule, and
measure the deviation
between them each time
at the end point of the
scale rule graduation
lines.
Take the maximum value
of the measurements as
the measured value.
4.25 Accuracy of paral- Deviation between Place the inspection scale inspection drawing & 0,3 mm at the
lel movement of the horizontal rule horizontally to coin- board, inspection end point of the
scale rule scale rule and the tide with a horizontal scale rule and scale rule gradu-
horizontal sta n- standard line, move the magnifier with ation lines

dard lines within head to make it coincide magnification of

the usable area with each horizontal stan- not less than x 5
(see dard line on the in-
IS0 9962-l :I 992, spection drawing board.
table 3) Measure the deviations
each time between the
end point of the scale rule
graduation lines and the
standard line.
Take the maximum value
of the measurements as
the measured value.
IS/IS0 9962.2:1992
Items to be Measuring ~ Permissible value
Performance measured Measuring method I instruments or deviation
Accuracy of Deviation of the Place the horizontal rail in Inspection drawing f. 0,3 mm on the
perpendicularity of parallelism be- a position parallel to a board, inspection maximum value
track-type tween the horizon- horizontal standard line. scale rule and
draughting ma- tal track and a Make the inspection scale magnifier with
chine horizontal stan- rule coincide horizontally magnification of
dard line, also tak- with a horizontal standard not less than x 5
ing into account line.
the straightness of
the horizontal Transfer the head to the
track upper part of the in-
spection drawing board
Deviation of the and make the division line
parallelism be- of the zero (0) position on
tween the vertical the inspection scale rule
track and vertical coincide with one of the
standard lines, vertical standard lines
also taking into and lock the horizontal
account the brake lever.
straightness of the
vertical track Transfer the head along
the vertical track within
the usable area and
measure the deviations
between the division line
of the zero position and
the vertical standard line.
Repeat for the other ver-
tical standard lines (see
flgureA.1).
Rotate the inspection
scale rule by 90” in the
vertical direction and re-
peat for the other hori-
zontal standard lines (see
figure A. 1).