In lighter machines, the driving motor is mounted at the rear end of the head counterbalancing the weight of the drill spindle. It encloses all the mechanism for driving the drill at a different speed and feeds. In some of the drill machines, the drill head may be adjusted up or down to accommodate different heights of the work in addition to the table adjustment. It is mounted on the redial arm and drives the drill spindle. It has guideways on which drill head slides. It is mounted on the column and extends horizontally over the base. A table is round or rectangular in shape. The table is mounted on the column and is provided with T-slots for clamping the work directly on its face. It is a cylindrical casting mounted vertically at one end of the base and supports the radial arm, which slides up and down.Īn electric motor at the top of the column helps in the vertical adjustment of the arm by rotating a screw passing through a nut attached to the arm. The Column is the verticle member of the machine which supports the table and the head containing all the driving mechanism. The base of the machine may be mounted on a bench or on the floor. The top of the base is round column section type upright drilling machined and has T-slots on it so that large workpieces and work holding devices may be set up and bolted to it. A base supports the column and worktable with other attachments. The base is that part of the machine on which the verticle column is mounted. You might like: What Are The Different Types of Drill Bits and Their Uses? Parts of Drilling Machine:įollowing are the main parts of drilling machine: As the machine uses vertical pressure to originate a hole it is loosely called a “drill press”. The hole is generated by the rotating edge of a cutting tool known as the drill which applies a large force on the work clamped on the table. In drilling machine holes may be drilled quickly and at a low cost. The bow drill is the mother of the present-day metal cutting drilling machine. Holes were drilled by the Egyptians in 1200 B.C. As regards its importance it is second only to the lathe machines. The drilling machine is one of the most important machines in a workshop. The drilling machine is defined as a machine which is used to make a circular hole, a tool used to drill the holes of different size and other related operations using a drill bit.
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