1347results about "Thread cutting tools" patented technology

A stop for use with an electric drill bit, the stop having at least one threaded sleeve for positioning the stop relative to a surface into which the drill bit will extend. The stop may have both an inner and an outer sleeve. The sleeves are mounted coaxially, one inside the other about the drill bit. One of the sleeves, preferably the inner sleeve, provides coarse adjustment of the position of the shoulder relative to the tip of the bit, while the other, preferably the outer sleeve, provides fine adjustment of the position of the shoulder relative to the top of the bit.

An array for use with a surgical navigation system is provided. The array comprises a frame and first, second and third markers attached to the frame. The first, second and third markers are detectable by a tracking system used in image guided surgery, and the first marker is movable relative to the frame. In one embodiment, at least one marker slides along the frame from a first position where it is held in place to a second position where it is also held in place. In another embodiment, one or more of the markers is removed from the frame at a first position and reattached to the frame at a second position. In still another embodiment, a portion of the frame itself moves with the moveable marker.

A device for preparing a pedicle to receive an implant comprises an elongated shaft having a proximal portion and a distal portion. An awl tip portion is near the distal portion. A probe portion is proximal to the awl tip portion. A threaded portion is proximal to the probe portion.

A drill includes a shank, a central insert and a peripheral insert. The shank defines a central axis of rotation and has pockets which carry the peripheral and central inserts. Chip flutes are formed in an outer periphery of the shank for conducting chips cut by the respective inserts. The peripheral insert includes a first operative cutting edge, and the central insert includes a second operative cutting edge which overlaps the first cutting edge at an overlap region. The central insert forms a rake surface adjacent to the second cutting edge. The rake surface includes a first portion disposed at the overlap region, and a second portion disposed at the axis of rotation of the shank. The first portion has a larger rake angle than the second portion.

A depth stop for use with a drill bit comprises a tubular body having an opening therethrough. Used with a drill bit whose bit portion includes a cutting end, and a shank portion, the depth stop is frictionally positionable on the bit portion at a specified point from the cutting end, thereby indicating a specified depth. Depth stops are manufactured in different colors, each color corresponding to a specified range of drill bits that the depth stops will fit. The depth stops, manufactured from a sterilizable material, are intended for single use. The depth stop can be used with a drill bit and drill extender, where one or more depth stops provide multiple visual points of reference for the operator. The depth stops can be quickly mounted onto most any manufacturer's drill bits.

A method of making a drill bit having the following steps: placing matrix material in a bit body mold; placing a metal blank in the bit body mold; placing a binder material in the bit body mold with the binder material proximate the matrix material and the metal blank; and exposing hinder material to microwave radiation, whereby hinder material and other constituents is heated to a selected temperature to allow hinder material to melt and to infiltrate matrix material. A method of heating selected portions of a drill bit comprising: placing the drill bit in an insulative oven having a wave guide of microwave radiation from a microwave generator; positioning a portion of the drill bit to be heated proximate the wave guide; and exposing the portion of the drill bit to be heated to microwave radiation, wherein the portion of the drill bit is heated without overheating remaining portions of the drill bit.

A milling head for thread whirling, the milling head includes a plurality of cutting elements evenly disposed around a center hole, each cutting element in the plurality of cutting elements includes at least two cutting surfaces formed thereon. Any one of the at least two cutting surfaces is selectable to extend within the center hole for contacting a work-piece. Each cutting element in the plurality of cutting elements is disposed in a recess formed in a face of the milling head, with each recess defining at least two walls. Each of the at least two walls contacts a side of the cutting element to align the cutting element in a predetermined relationship with respect to the milling head. In one embodiment, the plurality of cutting elements include first and second sets of cutting elements. The first set of cutting elements is evenly disposed around the center hole and contact the work-piece to produce a thread form on the work-piece. The second set of cutting elements is evenly disposed around the center hole and contacts the work-piece to remove material proximate the outside diameter of the work-piece.

A depth limiting device includes a stop collar having a an open end portion and an workpiece engaging portion extending along the open end portion thereof for contacting a workpiece; a spindle extending axially through the shell, the spindle including a first end extending from the exterior of the stop collar for attachment to a hole forming apparatus, and an second end interior to the stop collar for attachment to a hole forming bit, wherein the attached hole forming bit projects through the open end portion of the stop collar at a predetermined length corresponding to the desired depth of the hole in the workpiece; and a bearing assembly operatively associated with the stop collar and the spindle for isolating the rotation of the spindle from the stop collar whereby the stop collar ceases to rotate when contacting the workpiece without generating sufficient frictional contact to mar or otherwise damage the workpiece.

An apparatus for cleaning of tubular threads having adjustable spacing brushes to accommodate tubulars of different diameters. A plurality of brushes are rotated in a drum, which fits over the tubular connection. The brushes are mounted on L-shaped brackets, which are in turn mounted to a rotary driver by a shaft extending through slots in the brackets. By loosening the attachment of the brackets on the rotary driver, the brackets can be slid radially inward or outward to the extent of the slots, thereby adjusting the diameter of the threads that can be cleaned. The front access plate and seal plate, through which the tubular extends into the drum, are preferably held to the drum by hand operable latches. Solvent may be injected into the drum and onto the threads by a hand pump, and captured in the drum and drained into a container for disposal or reuse.

Boring bits and methods for manufacturing boring bits. The method includes the acts of forming a shank including one end connectable to a power tool and an opposite end, molding a cutting head separate from the shank, the cutting head including a base wall and a side wall extending from the base wall, the base wall having an interior base surface and an exterior base surface, and bonding the shank and the cutting head as a unit including bonding the opposite end of the shank to the exterior base surface.

A tool for metal-cutting machining of a surface of an opening particularly of a valve seat in a cylinder head of an internal combustion engines. The tool has a cutter tip with at least one geometrically defined cutting edge. The cutter tip rests on two supporting regions in the tool which are arranged at an angle α, and an angle-bisecting line runs essentially perpendicularly with respect to the active cutting edge which then is removing chips from the valve seat. A claw holds the cutting tip to the tool end. Coolant and lubricant are supplied through an outlet from the claw.

A portable tool includes a motive power section, a mechanical section driven by the motive power section, and an outer frame covering the motive power section and the mechanical section. A label or a sticker is affixed to an outer peripheral surface of the outer frame. The label contains specific pattern or specific color or specific character representing a specific user of the portable tool. The cover is made from a transparent resin and is removably disposed to the outer frame for protectingly covering the label. A sheet containing a plurality of labels having colors or pattern different from each other is provided. A user can select one of the labels.

A cutting tool has a tool shank and a replaceable cutting head resiliently secured to the tool shank by an interference fit between a male fixation member of the cutting head and a female fixation member of the tool shank. The male fixation member has a resilience slit. In each cross section of the cutting tool taken perpendicular to an axis of rotation of the cutting tool through mutual abutment regions, the cross sectional profiles of the mutual abutment regions are arcuate sectors.

A stop for a drill bit having a shaft, the stop having a first member which includes a collet. The collet is configured to receive the shaft of the drill bit and is positionable along the shaft of the drill bit. The stop also has a second member which includes a clamp, for clamping the first member in a desired position along the shaft of the drill bit by securing the collet in a desired position along the shaft of the drill bit. The stop further has an abutment surface on one of the first and second members, for limiting the depth of penetration of the drill bit into an object, the abutment surface being disposed in a fixed position along the shaft of the drill bit by the clamping of the first and second members.

A floating tool-bit depth controlling nosepiece for a spring loaded tool holder is used to countersink holes of equal size when the height of the work piece material changes. The floating tool-bit depth controlling nosepiece, driven by a cnc machine, is rigidly coupled to the floating portion of the tool holding element. The floating depth controlling nosepiece has a bearing on the end to allow an area of the nosepiece to stop rotating when the nosepiece is pressed against the work-piece surface. Since the area of the nosepiece that comes into contact with the work-piece is no longer spinning in relationship with the work-piece, the possibility of scratching the work-piece surface is reduced. Additionally, the nosepiece has cutouts therein to expel machined chips during countersinking of holes.

The frame of the whirling head comprises the rigid casing (7), in which the part (10) contains the drive pulley (15) solidly attached to the coupling member (17) connected to the drive shaft of the spindle (26). By means of the belt (19), this pulley (15) drives the pulley (8) solidly attached to the connecting cone (4), which in turn comprises the internal milling cutter (1) which cuts the thread of the screw shaft (27) supported between the bar advance unit (28) and the tailstock centre (29). The latter is mounted as an exchangeable tool on the return unit (32).

A fly-cutting system is disclosed, and in particular one that comprises a dynamically-controllable actuator for controlling the position, orientation, or both position and orientation of a cutting element carried by a fly-cutting head. In certain embodiments, the actuator can adjust the position or orientation of a cutting element, or both, hundreds or thousands of times per second, enabling precise control over the shape of features formed by the cutting element in a surface of a workpiece.

Instrumentation for manufacturing a bone dowel from human or animal cadaveric bone and instrumentation for evaluating the suitability of the bone and / or dowel for implant use after each step of the manufacturing process is provided. Such instrumentation for manufacturing a bone dowel includes a blanking or coring apparatus, a milling apparatus, a threading apparatus and a tapping apparatus. A gauge is provided to inspect and determine the suitability of the bone dowel at each step of the manufacturing process. By inspecting the dowel being manufactured after each step of the manufacturing process, time and effort which is needlessly wasted during completion of the manufacturing of dowels which are unsuitable for implant use (due to unsuitable bone and / or inaccurate machining of bone) can be avoided. Instrumentation for more accurately positioning bone and the partially manufactured dowel into the instrumentation for machining the dowel is also provided. Such instrumentation includes a gauge for positioning a piece of bone in relation to the apparatus, and mounting blocks for securing the partially manufactured dowel in relation to the milling apparatus.

A milling tool having replaceable straight elongated inserts that provide a helical cutting action. The tool has grooves formed at an angle with the longitudinal axis of the tool, the grooves have flat surfaces. Wedge means secure the respective inserts in respective grooves of the tool. The wedge means each have a plurality of apertures on the surface bearing against the insert, and coolant fluid under pressure is provided through said apertures to exit adjacent the cutting edge of said insert and against the work surface.

A tool for rotary cutting machining includes a tool body and a replaceable cutting head detachably attachable to the tool body. At its front end, the tool body is provide with two coupling legs projecting in an axial direction. The respective coupling leg is provided with a stop surface for transferring torque from the tool body to the cutting head, which stop surface is designed for abutment against a corresponding stop surface of the cutting head. The respective coupling leg is provided with a shoulder protruding from the stop surface of the coupling leg. The cutting head is provided with two shoulders facing the front end of the cutting head and arranged on opposite sides of the center axis of the cutting head, which shoulders border on a respective one of said stop surfaces of the cutting head and are arranged to extend in under a respective one of said shoulders of the coupling legs of the tool body when the cutting head is attached to the tool body, so as to thereby present the cutting head from being displaced in axial direction away from the tool body. The invention also relates to a tool body and a cutting head included in such a tool.

A tool for rotary cutting machining includes a tool body and a replaceable cutting head detachably attachable to the tool body. The cutting head has a coupling portion which is receivable in a space between two axially projecting coupling legs of the tool body. Cylindrical internal gripping surfaces are arranged in said space and designed for engagement with corresponding cylindrical external gripping surfaces of the cutting head. The gripping surfaces of the cutting head and the gripping surfaces of the tool body are dimensioned so as to prevent, by engagement with each other, the cutting head from being displaced in axial direction away from the tool body when the cutting head is attached to the tool body. A tool body and a cutting head included in such a tool are also disclosed.

One non-limiting aspect of the present disclosure is directed to a multi-piece spade drill head for a spade drill, wherein the spade drill includes an elongate body portion and a cutting portion removably secured to an end of the body portion. The multi-piece spade drill head includes at least two insert pieces, each piece including a cutting edge. The at least two insert pieces are configured to be removably secured to the body portion of the spade drill adjacent one another and with the cutting edges of the insert pieces aligned to together form a cutting edge on an end of the spade drill.

A drilling tool includes a tool main body having a cutting edge at its forward end, a groove provided in the outer peripheral surface provided at the forward end of the tool main body, a cartridge accommodated in the groove and capable of elastic deformation in a radial direction of the tool main body, and a burr removing tip in the form of a substantially triangular flat plate detachably mounted to the cartridge and capable of protruding from and retracting into the outer peripheral surface of the tool main body. The cartridge is equipped with two holding walls which are in face contact with the two side surfaces of the three side surfaces corresponding to the three sides of the triangle formed by the burr removing tip. The two side surfaces of the burr removing tip are in face contact with the two holding walls, and the remaining one side surface is mounted to the cartridge in an open state.