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JÚ 3þ_ô Nd¡u LhPûUl× Y¥YûUl× v©i¥p úSô³u (spindle noseþu) N¬Yô]Õ
LôhÓYÕ Gu] ùYu\ôp CRu scroll (taper) ùTôÚkÕm YûL«p CRu Õû[ (bore)
B]Õl ùTôÚû[d (component) ¡[ôml B]Õ tapered BL (N¬YôL) CÚdÏm. C§p
(clamp) TiQYûRd ùNnYÕ UhÓªu± JÚ key-way (¸úY) CÚdÏm. CkR key way
ùTôÚû[ CPm TÓjRÜm (locate) TiÔÜm) B]Õ spindle noseþu úUp CÚdÏm keyþEPu
ùNn¡\Õ. B]ôp A¥lTûP«p CÕ JÚ ùTôÚk§d ùLôsÞm. Øu Tϧ«p JÚ
úUôNUô] TZdLm / SûPØû\) Hù]²p AÓdÏ step Es[Õ. ARu úUp UûW (thread)
scroll-p Es[ ApXÕ Utßm Jaws-p Es[ ùYhPl Th¥ÚdÏm. v©i¥p (spindle)
úRnUô]m B]Õ ÕpXõVjûR N¬Vt\Rôd¡ úUp AûUdLlThÓs[ UûW«PlThP
®Ó¡\Õ. úUÛm CkRj úRnUô]jûR LôXo (threaded collar), UûW«u ER®ÙPu
DÓLhP GkRùYôÚ Ah_vh ùUihþEm NdþIl (chuckþIl) Xôd ùNn¡\Õ Utßm N¬Ü
C§p Nôj§VªpûX. (taper) Utßm keyþu ER®Vôp ùXôúLh
(locate) ùNn¡\Õ.
CkR YûL Nd¡u (chuckþu) RôûPLû[
¬Yo£©p ©u×\UôL (reversible) TVuTÓjR EPtTϧ: (Body)
Ø¥VôÕ. G]úY internal Utßm external G]j
CkR EPtTϧVô]Õ (Body) úLvh v¼Xôp
R²jR²j RôûPLû[ (jaws) TVuTÓjR
(cost steel) ùNnVlThÓ ØLl× (face)
úYi¥Ùs[Õ.
L¥]lTÓjRl Th¥ÚdÏm (hardened) CkR
3 þ_ô Nd¡u TôLeLs (Fig 1) EPtTϧ«p, RôûPLû[ (jaws/’_ô’þv)
AùNm©p ùNnV HÕYôLÜm AYtû\ operate
Fig 1
0
ùNnV HÕYôLÜm, 120 CûPùY°«p
êuß §\l×Ls (three openings) CÚdÏm. JÚ
EXTERNAL JAWS
Nd ¸ ER® ùLôiÓ RôûPLû[ (jaws/
BACK PLATE ’_ô’dLû[) CVdÏYRtÏ, EPtTϧ«u
(bodyþu) Ñtßl×\m (periphery-p) êuß
CROWN WHEEL
©²VuLs ùTôÚjRl ThÓs[Õ. CkR
SCROLL EPtTϧ ARu ÏßdÏ ùYhÓj úRôt\j§p
BODY
(cross- section) aôúXôYôL (hollowþBL)
CÚdÏm, EPtTϧ«às (inside the body)
dùWüu Åp (crown wheel) CPm ùTt±ÚdÏm.
_ôþv (Jaws/RôûPLs)
CHUCK KEY
_ôv (Jaws/RôûPLs) ûaLôoTu v¼Xôp
INTERNAL JAW
KEY SOCKET AND (high carbon steelþBp/EVo L¬G@Lôp)
BEVEL GEAR PINION
TO ROTATE SCROLL ùNnVlThÓ L¥]l TÓjRlThÓl
TRlTÓjRlTh¥ÚdÏm (hardened & temperred)
CkRj RôûPLs (_ôv/jaws) EPtTϧ«p
- úTd ©ú[h (Back plate) (bodyþp) Es[ §\l×L°p SLÚm (openings)
- EPtTϧ (body) vûXÓ (slide) BÏm. ùTôÕYôL CWiÓ
ùRôϧ ‘_ô’v (two sets of jaws) Es[]. AûY
- ‘_ô’ þv (Jaws)
ùY°l×\ _ôdNu external jaws Utßm Eh×\
- dùWüu NdLWm/Åp (crown wheel) _ôdLs internal jaws G]lTÓm. External jaws
§PUô] (solid) T¦l ùTôÚhLû[l ©¥dLl
- ©²Vu (pinion)
TVuTÓ¡\Õ. Internal Jaws EsÇPt\ (hollow)
Back plate :(úTd ©ú[h/©u×\jRLÓ) T¦l ùTôÚhLû[l ©¥dLl (for holding)
AûXu váÚdL°u (Allan screws) ER® TVuTÓ¡\Õ. RôûPL°p (‘_ô’dL°p/
ùLôiÓ, EPtTϧ«u ©u×\m (back of the jawsþp) Es[ steps B]ûY ¡[ôm©e
bodyþp) úTd©ú[h (backplate) B]Õ úWgfþI (clamping rangeþI) A§L¬d¡\Õ.
CûQdLl TÓ¡\Õ. (fastened), CÕ úLvh RôûPL°u ©uTϧ ÑÚs (scroll thread)
AVo]ôp (cast iron) ùNnVlTh¥ÚdÏm. þUûWVôp Bp ùYhPlTh¥ÚdÏm.
£_õ & Gm: @©hPo (NSQF - Revised 2022) R.T. for Ex.1.7.99 395
