Abstract: A boring bar fastening device for a single or double blade is provided with a body, a first fastening device releasably mounted to the body, a first boring bar fastening member releasably mounted on the first fastening device, a first blade releasably mounted on the first boring bar fastening member, a second fastening device releasably mounted to the body, and a second blade releasably mounted on the second boring bar fastening member. Alternatively, both the second boring bar fastening member and the second blade are replaced by a balance weight. Two configurations are provided for selection depending on applications.

Abstract: The wood plug trimmer is a devise used in conjunction with a hand held grinder that permits expeditious trimming of wooden plugs that are used to cover screws in wooden objects. The wood plug trimmer will have an interior cylindrical shape that will slide over the shank of a hand held grinder. The interior diameter of the wood plug trimmer will be slightly smaller than the exterior diameter of the shank of the hand held grinder and slightly shorter in length than the length of the base of the shank of the hand held grinder to the tip of the grinding die. This will permit the wood plug trimmer to be adjusted so that the grinding die will be flush with the wood surface. The wood plug trimmer will have a plurality of pilot/waste ports that will be wider than the wooden plugs to be trimmed. When in place the wood plug trimmer will have the wood plugs pass through the pilot/waste ports and permit the grinding die to trim the wooden plug flush with the surface.

Abstract: A power tool accessory system has a first accessory with a first connector for attaching the accessory to the power tool, and a second connector for attaching a second accessory to the first accessory. Preferably both attachment means are manually operable whereby the first accessory may be attached to a power tool and to a second accessory without the use of tools.

Abstract: A portable, hand-held bevelling device for providing a bevel on both the exterior and an interior of a tube comprises a housing having an interior and an upper extended portion and a lower extended portion. The upper extended portion is spaced a distance away from the lower extended portion for defining a space. A hydraulic clamp is located on the exterior of the housing and comprises an upper clamp portion provided on the upper extended portion of the housing and a lower clamp portion provided on the lower extended portion of the housing for hydraulically clamping a tube. A bevelling head having cutters for providing the interior and external bevels on the tube is contained within the interior of the housing and is extendable through the space between the upper extended portion and the lower extended portion toward the exterior clamp. The bevelling head is connected to a movable shaft located within the housing wherein both the head and the shaft are rotated by an air motor and a drive belt.

Abstract: The head of this boring tool carries two bit holders, which can be radially adjusted to different cutting widths by tooth systems provided on sloping faces of the head and/or bit holder. To ensure that there is still reciprocal supporting of the bit holders even in the outermost adjustment range thereof, cams are provided for extending the supporting surfaces. As an alternative to or in addition to this measure, the spacing between the front end face of the head and the surface of the bit holder parallel thereto is made so small that when high cutting forces occur these surfaces are supported on one another before the elastic deformation range of the bit holders is exceeded.

Abstract: A rotary material removing tool has an elongated support whose rear end portion can receive torque from the motor of a boring or milling machine and whose front end portion has a front end face with a transverse recess for a carrier having in its front end face a transversely extending dovetailed guide groove for two elongated knife holders which are shiftable relative to each other and with reference to the carrier to select the distance between their knives. The support has two legs which flank the recess and bear against the carrier to hold the latter in abutment with the bottom surface in the recess and to deform elongated portions of the carrier into frictional engagement with adjacent portions of the two holders when the free ends of the legs are urged toward each other by a clamping screw.

Abstract: A rotary material removing tool wherein an elongated rod supports a carrier for two elongated knife holders between two legs which flank the carrier and can be biased toward each other and against the carrier by a clamping screw extending transversely of the guide groove and at right angles to the axis of the rod. Those surfaces of the holders which abut against each other have elongated shallow recesses which surround the respective ends of the corresponding slots and receive a plate-like intercepting member having a centrally located hole for the shank of the clamping screw. The recesses extend to the inner ends of the respective holders and toward the knives which are mounted at the outer ends of such holders. The legs of the support close the outer ends of the slots, and the intercepting member serves to prevent penetration of chips, shavings and/or other foreign matter into those ends of the slots which are provided in the abutting surfaces of the holders.

Abstract: A tool head comprising plural cutting insert holders disposed on a holder main frame fixed to an arbor in such a manner that each is capable of sliding in the radial direction of the arbor; adjusting screws disposed on the holder main frame in parallel to the cutting insert holders in such a manner that movement in both axial and radial directions is restricted; and female screws fixed to the cutting insert holders and brought into tight screw engagement with the adjusting screws, respectively.

Abstract: A boring unit comprises a rotary spindle and a tool support mounted therein. The tool supports includes a rearwardly extending headbolt and a rearwardly extending supporting arm. The supporting arm engages an inclined wedge surface, the latter being movable by a connecting rod so that the wedge surface imparts rotary movement to the supporting arm and to the tool support about an axis of adjustment which is oriented perpendicular to the axis of rotation of the spindle, thereby moving the tool in a radial direction. The headbolt of the tool support is retained within a chucking cage. The chucking cage is movable to a position for releasing the headbolt by means of the movable connecting rod.

Abstract: This invention relates to an adjustable floating boring bar cartridge having indexable cutting inserts mounted on it. Two indexable cutting inserts are mounted on a cartridge such that one is held in a fixed position in one lateral face of the cartridge while the other is held in an opposite face of the cartridge such that it can be adjusted laterally inward and outward.

Abstract: The head of the boring bar of a boring tool has a recess flanked by two toothed internal surfaces which extend forwardly and outwardly with respect to the axis of the bar and face each other. The bit carriers have toothed surfaces which engage the respective internal surfaces and are clamped against such internal surfaces by screws whose shanks extend into tapped bores of the head. The axes of the tapped bores make an acute angle or are parallel with the axis of the bar, depending on the diameter of the bar. Each carrier has an elongated slot for the shank of the respective clamping screw, and each carrier can be shifted lengthwise of the respective teeth by a discrete adjusting screw which meshes with the bar.

Abstract: A blade-type boring tool having a body on an end of which is mounted a pair of separate and individually adjustable cutters. The cutters are preferably cutting inserts fastened on the side of holders having a mounting surface provided with V-shaped grooves mating a mounting surface on the end of the body provided with corresponding V-shaped grooves. Each holder is held in position on the end of the body by means of a mounting bolt or screw threading in an orientable retainer disposed in a transverse bore in the boring tool body.

Abstract: A mounting for a pair of boring tool cutting bits, the mounting being such that the two cutting bits, when present, project beyond a forward end of a mounting member and are displaced through 180.degree. relative to each other. Each of the tool cutting bits is mounted on a respective cutting bit carrier which is radially adjustable relative to and guided on teeth on the mounting member. The teeth extend in the direction of adjustment at right angles to the rotary axis of the mounting member and are parallel. The cutting bit carrier is also adjustable radially by means of an adjusting screw engaging the carrier and extending in the direction of the teeth. The teeth of the two cutting bit cariers is provided on the forward face of the mounting member in a common radial plane with continuous teeth running across the whole breadth of the forward face. The cutting bit carriers have similar teeth on their rear ends facing towards the forward face. The clamping screws are arranged parallel to the rotary axis.