Drill Holding Devices

The drilling machine has vertical spindle (rotating component) holds and turns the cutting tool or work pieces. Use 3 types of work-holding devices which fit the spindle are the geared drill chuck, the drill sleeve and the drill socket. Normally the larger drilling machines include a Morse taper in spindle at the bottom end.

•             Geared drill chucks have various sizes, common one with the 3/8 or 1/2-inch capacity. These have straight shanks generally held in the spindle of a drilling machine by inserting shank into the spindle's internal taper and then seating the shank into the taper with a light struck of hammer. The drill is then locked into the chuck through a chuck key that 3 adjustable jaws clamp onto the drill.

•             Drill sleeves and drill sockets are made such to add to or subtract from the Morse taper for fitting into a specified socket or sleeve and taper shank of drill to fit the spindle. Drill socket is also used as extensions sockets.

•             Drill drifts are flat, tapered keys with one rounded edge that fits into a spindle chuck’s slot and forces a tapered shank drill loose. So it is inserted through a slot in the spindle. Most modern machines have a built in drift. Typically these are used to remove tapered-shank drills or accessories from drill press spindle.

Work holding devices hold the work steady hold a workpiece to a cutting tool for an accurate hole to be drilled accurately, so that safe drilling operation can be accomplished. Drilling support devices hold the work piece above the worktable to align the work piece to drill a hole straight into the work piece. Some devices are fairly used for simple drilling operations, while other devices are specially designed for more precise during machining operations.

A machine table vise with its jaws clamp against the work piece ensures a secure hold. This vise is used to be bolted to the drilling table that lies against the drill column to hold firmly. Some table vises:

•             Standard machine table vise is equipped with 2 precision ground jaws for holding onto the work and a lead screw to tighten the one movable jaw to the work

•             Clamps are the small portable vises which bear against the work piece and holding devices to stead the job. Clamps are of numerous styles and sizes that meet work-holding needs. Some types include the C-clamp, the parallel clamp, the machine strap clamp, the bent-tail machine clamp, the U-clamp, and the finger machine clamp

•             Swivel vise is has an adjustable base that allow the vise to be swiveled through 360° on a horizontal plane.

Angle plates are designed in a 900 angle with slots and bolt holes for stable work setting.

Drill jigs are utilized for tapping, reaming, chamfering, counter boring and drilling jobs for locating workpieces having location surfaces clamped into a jig so that holes are drilled in the same location on each piece. The metalworking jig facilitates the drill to position the holes precisely through bushings to guide cutting.

Cutting fluids keep the workpiece at a stable temperature

Coolant and Lubrication in Machining help dissipate the high heat caused due to friction when performing metal cutting. These get better the end work and let achieve best efficiency at varied cutting speeds. The cutting fluid in machining cools the process and improves a tool life. Through proper cutting fluids, the machining processes such as drilling, reaming and tapping of various materials can be achieved qualitatively. Certain cutting fluids of versatile benefits can be useful for any machining operation.