Abstract: An off-set drill guide assembly useable with a conventional drill press or bench vice and portable power tool to drill holes in a workpiece has a body chucked to the drill press supporting a horizontal slide connected to the power tool with an adapter to locate the power tool off-set from the drill press beyond the normal range of the drill press. The body and power tool are moved downward to drill holes in a workpiece.

Abstract: A drill press has a bit, a base and a support shaft with a lower end supported by the base and an upper end supporting the housing. A lower plate with a connector coupled between the lower plate and the support shaft varies the angular attitude of lower plate with respect to the bit. An upper plate with threaded apertures, recesses, blocks and bolts secures the upper plate in preselected planar positions with respect to the lower plate. Aligned central apertures in the plates with a pivot pin provide a plurality of preselected rotational orientations of the upper plate with respect to the lower plate.

Abstract: A reference block 30 attached to a housing 20a is moved together with a main spindle 20 to a measurement start position A1, and the reference block 30 is so moved in a Z-axis direction as to across air injected from an air injection nozzle 25, so that a thermal displacement of the main spindle 20 is calculated based on change in pressure measured in the movement. The outer circumference of a tool mounted on the main spindle 20 is brought close to a leading end face of the air injection nozzle 25, and the air is injected to the outer circumference of the tool while rotating the tool at a predetermined position, and the air pressure is measured so that the rotational deflection of the tool is calculated based on the change in the measured pressure.

Abstract: The present invention relates to an improved hole saw boss (10) and in particular, to a boss including a threaded member (12) adapted to accommodate two hole saws of the same or different bore thread diameters. The present invention allows for a pre-existing aperture (22) in a work piece to be simply enlarged. This is useful if a new lock mechanism is being installed in a door with a pre-existing aperture where the lock mechanism requires a larger aperture than that which was in existence. Currently the aperture has to be enlarged by manual handwork since there is no centre-point to which a pilot drill may be enlarged. The threaded bore diameters of the present invention correspond with the commonly available hole saw threaded bore diameters. The present invention therefore provides the public with device for enlarging apertures which is simply, cost effective and can be used with currently available hole saws.

Abstract: Milling cutter and method of operating same, and other machine tools, and an adjustment mechanism therefor. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: Twist drill with a drill shaft and a cutting part that extends to a drill tip, with spiral chip flutes along the cutting part that form a drill core, wherein the drill diameter and/or core thickness diminish or taper from the drill tip toward the shaft. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

Abstract: The present invention is directed to a helical drill configuration that allows substantially flat bottomed holes to be machined. At the cutting end of the body member, there are at least two cutting edges that are symmetrically oriented on opposing sides of the rotational axis of the drill. In an embodiment of the invention, first and second cutting edge portions form a continuous surface which provides strength and tool stability. The height of the second portions of each of the cutting edges remains relatively consistent along the horizontal for formation of a generally flat bottom hole. In the embodiment, a center point is defined by two sloped peak surfaces. A central straight chisel edge is formed by the intersection of the two sloped peak surfaces. The first cutting edge section extends from the chisel edge to the second cutting edge section. The first cutting edge section for both cutting edges is formed by symmetrically thinning the two peak surface.

Abstract: A rotary cutting tool that is composed of a tool shank with at least one chucking groove or chip flute and one exchangeable cutting insert. At the tip of the shank a recess for accommodating the cutting insert is provided. The tool shank, on its circumference, has a limb with a bearing surface that is inclined relative to the tool axis and that corresponds to a likewise inclined bearing surface on a wing of the cutting insert. The inclination of the bearing surfaces produces an axial force that retains the cutting insert on the tool shank. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.

Abstract: A drill has a housing formed with an outlet hole, a fan expelling an air stream from the outlet hole, a drive spindle projecting from the housing adjacent the outlet and centered on and rotatable about an axis, and a chuck body carried on the housing. A tightening sleeve rotatable about the axis on the chuck body carries a plurality of radially shiftable jaws, and interengaging screw formations operatively engaged between the body and the sleeve can shift the jaws radially in the guides on rotation of the sleeve relative to the body. A shield sleeve angularly fixed to the housing and surrounding the tightening sleeve has a rear end juxtaposed with the housing radially outside the outlet hole such that the air stream enters the shield sleeve. Inside the shield sleeve forward of its rear end a passage and a particle-expelling hole collect drilling particles and blow them out the particle-expelling hole.

Abstract: In a milling method for producing a structural component from a raw material by chip-cutting, a milling tool is moved along at least one defined tool path for the milling. In addition to the at least one tool path, at least one collision contour is also defined. The position or orientation of the milling tool relative to the collision contour(s) is monitored. The position or orientation of the milling tool is changed and/or an error message is generated if at least one of the collision contours is damaged, i.e. intersected, by the milling tool.

Abstract: The invention relates to a drill (4) and a device or a method for drilling boreholes in workpieces (3), in which a periodically acting radial force (19) is exerted on the drill head (5) of the drill (4). The drill head (5) of the drill (4) has a cutting edge (52) extending only over a part of the diameter D (51) and is designed to have a lateral, V-shaped chip removing groove or bead (59) and with a channel (12) with an outlet opening (56) in the drill head (5) for supplying a drill fluid (9). On a drill side (61) of the drill head (5) opposite the bead (59) between a first and a second cylinder casing partial surface (64, 65) of the drill head (5) a rear offset (63) is formed which reduces the cross section of the drill head (5) in relation to an enclosing cylinder casing surface (61) of the drill head (5).

Abstract: The invention is directed at a quick connect mechanism for mounting a hole saw to a tool comprising a hole saw; a mandrel having a first end for mounting to the hole saw and a second end for mounting to the tool; and a drill bit, assembled within the mandrel such that when the mandrel is connected to the hole saw, the drill bit being concentrically centered within the hole saw; a holder, mounted to the tool, for receiving the second end of the mandrel; wherein the second end of the mandrel includes quick connect means for easily mounting the mandrel to and releasing the mandrel from the holder.

Abstract: A tool for working a workpiece comprises an elongate member and a cam member. The elongate member comprises at least two extremities comprising at least one blade member. The at least two extremities are operable to separate in response to a pressurized medium. A conduit is in fluid communication with the extremities, and a pair of vents are in fluid communication with the conduit. The vents are operable to expel fluid communicated through the conduit. The cam member comprises an inner surface defining an opening. The inner surface of the cam resists expulsion of fluid from the vents, such that the cam and vents are operable to vary the pressure of fluid communicated through the conduit. The pressure variation varies the separation of the extremities as the elongate member is advanced through the cam toward a workpiece. The tool may be used to create bores having a non-cylindrical profile.

Abstract: A tool, such as a pneumatic tool, includes a casing, tool-holder spindle extending along an axis, and a drive mechanism for the tool-holder spindle. The mechanism uses a first member for driving the spindle in rotation about its axis and a second member for driving the spindle in translation along its axis. The second drive member is screwed onto a threaded portion of the spindle so that the spindle advances or returns as a function of the relative rate of rotation of the drive members. The second drive member is displaced along the axis between an advanced position and a returned position.

Abstract: A tool clamping insert has a tool holder for receiving a tool shank. The tool holder hole is nominally smaller than the tool shank to be therein but upon heating of the insert expands to a size permitting insertion of the tool shank and, upon cooling, shrink fitting therein. The insert has an external clamping surface and is positioned in a clamping unit. The clamping surface and the tool holder hole are each configured with diameters, external and internal respectively, that change along the progression of their axial lengths.

Abstract: A drill guide apparatus includes a body providing a workpiece clamping surface. The body includes one or more drill guides, wherein the one or more drill guides pass through the workpiece clamping surface at an acute angle, a first track, and a second track. The drill guide apparatus further comprises a first slider mounted on the first track, and a second slider mounted on the second track. The first slider includes a first extrusion that extends beyond the workpiece clamping surface and is slideable along the first track to adjust the position of the first extrusion relative to the workpiece clamping surface. The second slider includes a second extrusion that extends beyond the workpiece clamping surface and is slideable along the second track to adjust the position of the second extrusion relative to the workpiece clamping surface. The drill guide may also include a removeable clamp retainer.

Abstract: A dust catcher has a contact element configured to catch abraded material that is produced by a power tool on a workpiece, and the contact element includes a handgrip element for holding the contact element on the workpiece.

Abstract: A burrless, flexible track drilling system employing a counterweight tool balancing subsystem. The counterweight tool balancing subsystem provides essentially a “weightless” feel to a machining subassembly of the system that carries a drill and an electromagnet. This enables an operator to move the machining subassembly vertically with only a very minimal degree of effort being required. The machining subassembly also includes a plurality of lifting subassemblies that aid the user in lifting and lowering the electromagnet away from and toward a pair of panels on which a drilling operation is being performed. This also significantly reduces operator fatigue and contributes to a highly ergonomic system.

Abstract: A drill including a columnar body that is rotated about an axis, a cutting edge that is formed at the tip end of the body, and a thinning edge that is formed continuously with the cutting edge close to the axis of the body, by having a thinning at the tip end of the body. The thinning edge is formed such that a rake angle of the thinning edge relative to the axis of the body changes depending on a location of the thinning edge, where the rake angle of the thinning edge close to the cutting edge is a positive angle larger than that close to the axis of the body.

Abstract: The invention relates to a cutting element for a hollow drill comprising a cutting area and an essentially cylindrical area. The essentially cylindrical area has recesses, which are arranged on the inside at regular intervals and open toward the cutting area. In one embodiment of the invention, the recesses extend in an axial direction while being arranged in an interspaced manner preferably in the peripheral direction. The recesses arranged at regular intervals in the peripheral direction produce a geometric shape that is generally described as a polygon. The invention also relates to a cutter support and to a hollow drill. The cutting element is connected to the cutter support via a clamping connection preferably in a manner that enables the cutting element to be detached.