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£_õ & Gm (CG & M) T«t£ 1.2.38 dLô] ùRôPo×d LÚj§Vp
@©hPo (Fitter) - A¥lTûP ùTôÚjÕRp (Basic Fitting)

h¬pXõe ùNVpØû\Ls - h¬pXõe CVk§WeLs, YûLLs, ETúVô¡jRp
Utßm TWôU¬jRp (Drilling processes - Drilling Machines, Types, Use and Care)

úSôdLeLs: ClTôPj§u Ø¥®p ¿eLs ùT\ úYi¥V A±Ü §\uLs
• TpúYß YûL h¬pXõe ùUμuL°u ùTVo A±Rp (drilling machines)
• ùTgf (bench) Utßm ©pXo YûL h¬pXõe ùUμuL°u (pillar type drilling machines)
TôLeL°u ùTVo A±Rp
• ùTgf Utßm ©pXo YûL h¬pXõe ùUμuL°u AmNeLû[ Jl©ÓRp.

h¬pXõe CVk§WeL°u YûLLs (The TPj§p, TpúYß TôLeLs ϱdLlThP ªL
principle types of drilling machines are) ªL G°ûUVô] YûL ù^u³¥q h¬pXõe
ùUμu LôhPlThÓs[Õ. CÕ CXÏWLl
– ùNu³¥q ùTgf h¬pXõe ùUμu
(sensitive bench drilling machine) T¦LÞdÏl TVuTÓjRlTÓ¡\Õ.
CkR ùUμ²p 12.5 ªÁ YûW ®hPm
– ©pXo (pillar) h¬pXõe ùUμu
EûPV Õû[Lû[ h¬pXõe ùNnVXôm.
– çi h¬pXõe ùUμu (the column drilling h¬pLs B]Õ ¥¬p Nd¡p (chuckþp)
machine) ùTôÚjRl TÓ¡\Õ. ApXÕ ùUμu
– úW¥Vp Bom h¬pXõe ùUμu (úW¥Vp v©i¥Xõu NônYô] Õû[«p úSW¥VôLl
¥¬pXõe ùUμu) The radial arm drilling machine ùTôÚjRl TÓ¡\Õ.
(radial drilling machine) NôRôWQUôL ùNeúLôQUôL Õû[«P
(çi Utßm úW¥Vp YûL h¬pXõe T¦lTWl× ¡ûPUhPUôL (horizontal)
ùUμuLû[ ClúTôÕ ¿eLs TVuTÓjRl ûYdLlTÓ¡\Õ. Õû[Ls JÚ úLôQj§p
úTôY§pûX. G]úY ù^u³¥q Utßm EÚYôdLlTP úYiÓm Gu\ôp úUû_ûV
©pXo (pillar) h¬pXõe ùUμuLs UhÓm §Úl©d ùLôs[Xôm. Fig 1-p ¥p¥e
CeÏ ®Y¬dLlThÓs[]). AúWgùUih (Tilting arrangement)
LôhPlThÓs[]. (Fig 1)
ù^u³¥q ùTgf h¬pXõe ùUμu
(The sensitive bench drilling machine) (Fig 1) ùYqúYß v©i¥p úYLeLs ùT\ stepped
pulleysþp ùTph ¨ûXûV Uôt± AûUjÕl
ùT\lTÓ¡u\] (Fig 2)

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