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JqùYôÚ RôûPÙm Y¬ûNd¡WUôL dùWüu Åp (crown wheel) ÑZuß (rotateB¡)
Gi¦PlTh¥ÚdÏm. CÕ, ARtϬV RôûPLû[ (jaws) ÑZt£dúLt\Yôß,
Gi¦PlThP vXôh¥p ùTôÚkÕYRtÏ Eh×\UôLúYô (inward) ApXÕ
ERÜ¡\Õ. ùY°l×\UôLúYô (outward) SLojÕ¡\Õ.
dùWüu Åp/NdLWm (crown wheel) ©²Vu (Pinion):- ‘©²Vu’ B]Õ
ûaLôoTu v¼Xôp (high carbon steelþBp)
dùWüu Åp B]Õ (crown wheel) AXôn
ùNnVlThÓ L¥]l TÓjRlThÓl
v¼Xôp (alloy steel) ùNnVlThÓ
TRlTÓjRlTh¥ÚdÏm. (hardened and
L¥]lTÓjRlThÓ TRlTÓjRl Th¥ÚdÏm
tempered). CÕ EPtTϧ«u Ñtß YhPj§p
(hardened and tempered). dùWüu ÅXõu JÚ
×\m, ÑÚs UûW (vLWôp UûW) (periphery of the body) ùTôÚjRlThÓ CÚdÏm.
©²V²u úUtTϧ«p Nd ¸ (chuck key)þI
ùYhPlThÓj RôûPLû[ CVdÏm Utßm
Htßd ùLôs[ (accommodate) JÚ NÕWY¥Y
AÓjR TdLm B]Õ N¬Ü ùNnVlThÓ
ARu ÁÕ ùTYp ¸Vo TtLs (bevel gear teeth) vXôh CÚdÏm. C§p ARuúUp ùTYp¸Vo
TtLs ùYhPlThP N¬Yô] Tϧ (tapered
ùYhPlThÓ AÕ pinion EPu CûQÙmT¥
CÚdÏm. ©²Vu (pinion) Nd¸«u (chuck portion) CÚdÏm. CÕ crown wheel EPu match
keyþu) ER®Vôp ÑZt\lTÓm úTôÕ (rotate) BÏm.
JÚ ‘3’ Jaw chuck Utßm ‘4’ Jaw chuck tÏm CûP«Xô] JlÀÓ (Comparision)
3 Jaw Chuck 4 Jaw chuck
(Cylindrical) EÚû[ Y¥Y (YhP Y¥Y ªLl TWkR A[®p ùWÏXo (regular)
ApXÕ AßeúLôQ (hexagonal) Y¥Yl Utßm JÝe Lt\ (irregular) Y¥Y
T¦ ùTôÚhLs UhÓúU ©¥dL ØûPV T¦lùTôÚhLû[Ùm
Ø¥Ùm. ©¥dLØ¥Ùm.
Internal Utßm external _ôv (Jaws) / external Utßm internal BLl ©¥lTRtÏ
RôûPLs ¡ûPd¡u\]. Jaws- Ij §Úl©d ùLôs[Xôm. (Reversible)
T¦lùTôÚû[ set TiÔYÕ G°Õ T¦lùTôÚû[ set TiÔYÕ L¥]m.
Ïû\Yô] gripping power EûPVÕ. A§LUô] ©¥lק\u gripping power
EûPVÕ.
Jl©ÓûL«p Ïû\Yô] ùYhÓ BZm A§LUô] ùYhÓ BZm Depth of cut
ùLôÓdLXôm. ùLôÓdLXôm.
3 Jaw Chuck 4 Jaw chuck
L]Uô] T¦lùTôÚû[ L]Uô] T¦lùTôÚû[
Heavier jobs-- LûPNp ùNnV Ø¥VôÕ Heavier jobs-- IÙm LûPNp ùNnV Ø¥Ùm.
Eccentric turning - tÏ úYûXûV set Eccentric turning - tÏm T¦lùTôÚû[ set
ùNnV Ø¥VôÕ. ùNnV Ø¥Ùm.
Concentric circles B]ûY ØLl©p (face) Concentric circles RWlTh¥ÚdÏm. C§p
RWlThÓ CÚdLôÕ. _ôdNu úRôWôVUôL ùNh¥e
ùNnVlTÓm.
Nd (Chuck/ Lq®) úRnUô]m AûPÙm NdÏsúRnUô]m AûPÙm úTôÕ
ÕpXõVm (accuracy) Ïû\¡\Õ. C§p úTôÕÕpXõVj§p GkR
Tô§l×m HtTPôÕ.
396 £_õ & Gm: @©hPo (NSQF - Revised 2022) R.T. for Ex.1.7.99
