DRILLING MACHINE Prof kiran gore BASIC ELEMENTS OF
DRILLING MACHINE Prof. kiran gore
BASIC ELEMENTS OF DRILLING MACHINE The drilling machine consist of following principle parts: - 1. 2. 3. 4. 5. Base Column Work table Drill head Spindle drive
BASIC ELEMENTS OF DRILLING MACHINE Spindle Drill head Column Work table BASE
BASE
COLUMN
WORK TABLE
DRILLING HEAD It contains 1. Drive mechanism 2. Feed mechanism
DRIVE MECHANISM
FEED MECHANISM
SPINDLE
TYPES OF DRILLING MACHINE 1. 2. 3. 4. Portable drilling machine Bench or sensitive drilling machine Pillar or upright drilling machine Radial drilling machine
PORTABLE DRILLING MACHINE
BENCH OR SENSITIVE DRILLING MACHINE It is used for drilling holes up to 12. 5 mm diameter
PILLAR OR UPRIGHT DRILLING MACHINE It is used for drilling holes up to 75 mm diameter
RADIAL DRILLING MACHINE
OPERATIONS PERFORMED ON DRILLING MACHINE 1. 2. 3. 4. 5. 6. 7. 8. Drilling Reaming Boring Counter boring Spot facing Counter sinking Tapping Trepanning
DRILLING ØProcess – Making the cylindrical hole in W/p ØCutting tool – Drilling tool ØTool type- multipoint cutting tool
REAMING ØProcess – Of smoothly finishing & accurately sizing the drilled hole ØCutting tool – Reamer tool ØTool type- multipoint cutting tool
BORING ØProcess – Enlarging previously drilled hole ØCutting tool – Boring tool ØTool type- single point cutting tool
COUNTER BORING ØProcess – Of enlarging the existing hole to a larger diameter and making the surface at the bottom of the larger diameter flat. ØCutting tool – Counter boring tool ØTool type- multipoint cutting tool
COUNTER SINKING ØProcess – of Chamfering the entrance of a drilled hole ØCutting tool – Counter sink ØTool type- multipoint cutting tool
TAPPING ØProcess – Of making internal threads in drilled hole ØCutting tool – Tap ØTool type- multipoint cutting tool
TREPANNING ØProcess – Of making a large hole by removing the metal along the circumference of the hole ØCutting tool – Trepanning tool ØTool type- multipoint cutting tool
SAFETY PRECAUTION
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