Page 281 - Content.pmd

ùTôÚhLs Õû[«ÓYRtÏ, ¥¬pûX (drill) Utßm ùUμu v©i¥Xõu Õû[LÞdÏ
ùUμuL°p (machines) ÕpXõVUôLÜm CûP«Xô] úYßTôhûPf N¬
(accurately) Utßm EߧVôLÜm (rigidly) ùNnYRtÏ ùYqúYß A[ÜL°p Es[
úYi¥VÕ AY£Vm. ùTôÕYô] ¥¬p vÄqLs (sleeves) TVuTÓ¡u\].
úaôp¥e LÚ®L[ôY] (drilling holding devices) ùUμu v©i¥ûXd (spindle) Lôh¥Ûm
¥¬p NdÏLs (drill chucks) vÄqLs (sleeves) h¬p úPlTo ú`ed ùT¬RôL
Utßm ^ôdùLhÓLs (sockets) BÏm. CÚdÏUô]ôp úPlTo ^ôdùLhv
h¬p NdÏLs (drill chucks) (sockets) TVuTÓjRlTÓ¡u\]. (Fig 2)
vhûWh `ôed h¬pLs (straight shank drills)
h¬p NdÏL°p (drill chucks) ©¥dLl
TÓ¡u\]. h¬pûXl ùTôÚjR (for fixing)
Utßm ALt\ (removing) NdÏL°p (chucks)
©²Vu Aih ¸ (pinion and key) ApXÕ JÚ
SopÓ ¬e (knurled ring) RWlTh¥ÚdÏm.
(Fig 1A)
h¬p NdÏLs (drill chucks) ùUμu
v©i¥Xõp (spindle) BoTo (arbor) (Fig 1B)
êXm ©¥dLlTÓ¡u\].

h¬pûX JÚ ^ôdùLh ApXÕ vÄq þp
ùTôÚjÕm úTôÕ úPed Tϧ vXôh¥p
AûXu B¡ CÚdÏm. CÕ h¬p ApXÕ
vÄûY ùUμu v©i¥Xõp CÚkÕ ALt\
ERÜm. ùUμu v©i¥Xõp CÚkÕ
h¬pLs ApXÕ ^ôdùLh þI ALt\ JÚ
N¬Yô] vÄqLs Utßm ^ôdùLhLs h¬@lh TVuTÓjRÜm. (Fig 3)
(Taper sleeves and sockets) (Fig 2)
úPlTo ú`ed h¬pL°u (taper shank drills)
ú`eLô]Õ úUôov úPlTûW (morse taper)
ùLôi¥ÚdÏm. vÄqv Utßm
^ôdùLhLÞm (sleeves and sockets) CúR
N¬ûY/NônûY (taper) Id ùLôi¥ÚdÏm.
CR]ôp h¬pXõu úPlTo ú`ed B]Õ
©¥dLlTÓm úTôÕ JÚ SpX wedging action
¡ûPd¡\Õ. CkRd LôWQjRôp ^ôdùLh / ApXÕ vÄ®p CÚkÕ
úUôov úPlToLs (morse tapers) ÑVUôLl h¬pûX ALtßm úTôÕ AÕ úUû_
©¥dÏm N¬ÜLs / úPlToLs (self-holding ApXÕ T¦lùTôÚs ÁÕ ®ZôÕ TôojÕd
tappers) Gu\ûZdLlTÓ¡\Õ. h¬pLs ùLôs[Üm.
úUôov úPlT¬u ùYqúYß IkÕ h¬p Nd B]Õ vùTNp AXôn
A[ÜL°p ¡ûPd¡u\]. CûYLs êXm ùNnVlTh¥ÚdÏm. vÄq /
MT 1 to MT 5 GiL°PlThÓs[]. NôdùLhLs (case hardening)
h¬pL°p ú`edÏL°u A[ÜLs ùNnVlTh¥ÚdÏm.

260 £_õ & Gm: @©hPo (NSQF - Revised 2022) ------ R.T. for Ex. No.1.5.63-65