Page 369 - Content.pmd

¨ûXVô] CûQl×Ls (Permanent fasterers) TVuLs (Uses)
CûQl× TôLeL°u LhPûUlûT
CW«p EÚYôdLm (Wagon building) LlTp
ùTôÚjÕ ùRô¯XLj§p Bod ùYp¥d (Are
EÚYôdLm (Ship building) TôXm AûUl×
welding) úLv ùYp¥e (Gas welding), Utßm
(Bridge structure) úTôu\ûYLû[ v¼p
©úW£e Øû\L°p ¨WkRW CûQl×
©ú[hÓLÞPu (Steel plates) JÚ¡ûQdL
ùNnVlTÓ¡\Õ (Permanent joint). KÚ Øû\
(assembling) TVuTÓ¡\Õ.
Bod ùYp¥e, úLv ùYp¥e Utßm
©úW£e B¡V Øû\L°p CûQkR úUÛm £X NUVeL°p ùYp¥e ùNnYRtÏ
TôLeLû[ úNRªpXôUp ©¬dL Øu× RtLôXõL CûQl×LÞdÏ TôLeLû[
Ø¥VôRRôp CkR CûQl×Ls ¨WkRW úTôph (Bolt), Sh (Nuts) vÏÚdLs (Screws)
CûQl× Guß AûZdLlTÓ¡\Õ ¬®hLs (Rivets) êXm JußPu Juß
(Permanent fastening) ©¥jÕ ùLôs[ (Part holdy together)
TVuTÓ¡\Õ.
vÏÚq §ùWh ûUdúWôÁhPo A[ÜLs (TVàß ®hPm) (Thread
measurement (Effective diameter))

úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
• UûW ÖiQ[®«u AûUl× AmNeLû[d áßRp
• AhPYûQL°u ER®ÙPu êuß Lm© Øû\«p UûW A[®ÓRXõu
AmNeLû[d á\Rp
• êuß Lm© Øû\«p UûWûV A[ÅÓ ùNnV AhPYûQL°u ER®ÙPu ªLf
N¬Vô] Lm©ûVj ùR¬Ü ùNnRp.
UûW ÖiQ[® (Screw thread micrometer) ùRôÓØû]Ls Uôt±l ùTôÚj§d ùLôs[d
á¥VûY CûY TpúYß ¨oQV
CkR ÖiQ[® B]Õ (Fig 1) UûWL°u
Øû\L°]ôXô] UûWL°u ׬V[Ü Utßm
TVàß ®hPjûR A[dL ERÜ¡\Õ. CÕ
UûW Y¥YeLÞdÏ HtT Uôt±d
JÚ NôRôWQ ûUdúWô ÁhPo úTôXúY
ùLôs[jRdLûY. (Figs 2 & 3)
AûUlûTd ùLôi¥ÚdÏm. B]ôp
ùRôÓØû]Lû[ (anvils) Uôt±d ùLôsÞm
YN§ AûUlûTl ùTt±ÚdÏm.

êuß Lm© Øû\ (The three wire method)
CkR Øû\«p JúW ®hPØs[ êuß
Lm©Lû[d ùLôiÓ TVàß ®hPj§u
A[ûYÙm, UûW«u TdLYôhÓ
Y¥YjûRÙm úNô§dLlTÓ¡u\]. CkR
Lm©Ls A§L A[Ü ÕpXõVjÕPu
RVô¬dLlTh¥ÚdÏm. TVuTÓjRlTÓm
Lm©«u A[Ü A[dLl TP úYi¥V
UûW«u ׬ûVl ùTôßjÕ AûUÙm.

TVàß ®hPjûR A[dL UûW«u
׬V[®tÏl ùTôÚjRUô] êuß Lm©Ls
UûWLÞd¡ûPúV ûYdLlTÓ¡u\]. (Fig 4)

348 £_õ & Gm: @©hPo (NSQF - Revised 2022) ------ R.T. for Ex. No.1.6.86-88