A deep hole drilling system and methods provide stability and cutting performance to produce deep holes having desired straightness. The system may include a replaceable cutting head provided with a center cutting member and first and second side cutting inserts. The tool provides a major diameter with the OD cutting margins on the replaceable side inserts, as well as possibly cutting margins on the center cutting member. Adjustment mechanisms are provided to adjust the center cutting member and/side cutting inserts.

An electric power tool dust collection system includes: a hammer drill, to which a dust suction bit is mounted; a dust collection device mounted to the hammer drill and including a suction portion (introduction port), a dust collection motor, a dust collection fan rotated by drive of the dust collection motor to generate a sucking force in the introduction port, and a dust collection portion (dust box) that stores powder dust suctioned from the introduction port; and exhaust flow paths (exhaust flow path and tubular flow path) respectively formed in the hammer drill and the dust collection device to lead exhaust that has passed through the dust box to a high-temperature portion (output portion) of the hammer drill.

An arrangement includes at least one drill bit and at least one limit stop for a drilling core, or parts of a drilling core, forming in the course of drilling. The at least one limit stop has at least one fluid opening transverse to an axis of rotation of the at least one drill bit, and the at least one limit stop has a central through-hole for receiving a centering pin.

A dust suction drill includes: a drill tip with cutting edge portions; a shaft joined to the drill tip and configured to rotate about an axis; and a dust suction passage that is generated when the cutting edge portions rotate, the dust suction passage being formed inside the shaft. The cutting edge portions are provided on a distal end surface of the drill tip and spaced apart from each other in a circumferential direction. Cutting edges, each of which is formed by a joint ridge between a rake face and a relief face of a corresponding one of the cutting edge portions, are arranged radially, and at a center of the drill tip, form a chisel point, which is a pointed end. A dust suction hole, which communicates with the dust suction passage, is formed in the rake face or the relief face closely to the chisel point.

A reaming tool vacuum assembly comprising: a reaming tool comprising a reaming bit, the reaming bit comprising: a tip end; a base end; a plurality of flutes tapered toward the tip end; a plurality of apertures positioned between the plurality of flutes, wherein the plurality of apertures define a plurality of openings to an interior chamber of the reaming bit; a first rigid tube positioned in the interior chamber of the reaming bit, wherein the reaming bit is rotatable around a longitudinal axis of the first rigid tube and independent of the first rigid tube; and a vacuum to provide suction in the interior chamber of the reaming bit via the first rigid tube.

A rotary tool comprises a cylindrical sleeve including an opening formed in an outer circumferential surface thereof providing fluid communication between a hollow interior of the sleeve and an environment surrounding the sleeve. The sleeve includes an axially extending flow passage formed therein terminating in a first fluid outlet formed in an open end of the sleeve disposed adjacent a cutting element of the rotary tool. The fluid outlet is configured to deliver a flow of a fluid toward the workpiece to cause chips formed during the machining operation to be directed away from the workpiece and out of the hollow interior of the sleeve through the opening formed in the outer circumferential surface thereof.

A drilling device, wherein the drilling device has a drill bit fitting and a drill bit, wherein the drill bit fitting has a connection region for connection of the drilling device to a power drill, and a receiving region for receiving the drill bit, wherein the drill bit has a shank, which is received by the receiving region, in the fitted state and is fixed releasably in the axial direction by an axial drill bit securing means, wherein the shank has a securing region, wherein the securing region secures the drill bit against rotation relative to the drill bit fitting in the fitted state, wherein the securing region has a securing contour along its length, wherein the securing contour has a plurality of curved shank arc segments and a plurality of shank connecting segments, which connect the shank arc segments to one another at a plurality of shank connection points.

A vacuum drilling system and methods is provided that may utilize both a through tool coolant supply as well as a central vacuum extraction system. The system may include a cutting head provided on a hollow tube and a vacuum source to apply vacuum pressure to the area of the cutting head via one or more chip inlets arranged proximate to the cutting head. Sealed coolant containment channels supply coolant to the area of the cutting head.

A drilling head for a tubular shank having an inside diameter and threads may comprise an axial body comprising a duct exiting through a first end; threads adjacent the first end corresponding to the threads on the shank and aligning the duct with the shank inside diameter; a bore from an outer surface of the body to the duct; and two axially extending approximately parallel and offset surfaces adjacent a second end; and an insert affixed between the offset surfaces, the insert comprising: a first face at least partially contacting one offset surface and a second face at least partially contacting the other offset surface; one or more cutting edges adjacent the first face, the second face, or both; and a cutting lip adjacent one or more cutting edges.

A debris removal apparatus for a milling machine. In one embodiment, the debris removal apparatus includes a hollow, cylindrical suction member that attaches to a tool shaft which holds an end mill to rotate with the tool shaft. The debris removal apparatus further includes a nonrotating canister that applies a suction force to the suction member. The suction member is dimensioned to fit within a hole being cut by the end mill as the end mill is fed into the hole, and to extract debris created by the end mill via the suction force.