Abstract: A drill bit and method for normalizing bone is provided. The drill bit has a non-round drill bit core that is adapted to cut hard bone and to not cut soft bone. The drill bit has a cutting edge which may be positioned within a compression zone of the non-round drill bit core. The rotational speed of the drill bit and the profile of the drill bit core are tuned so that hard bone recovers into a cutting zone defined by the cutting edge while soft bone remains outside of the cutting zone. The insertion torque of the drill bit can be measured to determine when the normalization is adequate.

Abstract: This disclosure relates to drill guides and depth control apparatus for use with a variety of customized or standardized surgical instruments. In embodiments, the apparatus comprises at least a body portion and a collar portion, one or more of which are configured to be coupled to a cutting instrument, such as a drill bit, in a specified location and manner to prevent unwanted movement. In embodiments, the assembly of the body and collar portions may be incrementally adjusted to alter the desired depth of the cutting instrument. Methods for using the foregoing apparatus are also disclosed herein.

Abstract: The invention relates to a conical countersink (10) having at least one main cutting edge (16-1, 16-2, 16-3) extending in an arc-shaped, in particular spiral-shaped manner.

Abstract: A depth gauge device including a body extending a central longitudinal axis and including a channel and a light-passing hole, the light passing hole open to the channel, a light source mounted in the body for generating a light beam, the light beam passing through the light-passing hole toward a surface of a drill-bit extending through the channel, the light beam forming an incident light beam when reflected away from the drill-bit surface, an image sensor mounted in the body for sensing the incident light beam and generating a plurality of successive images of the drill-bit surface to detect variations in the position of the drill-bit moving through the channel and an clamp coupled to the body, the clamp including a plurality of adjustable arms configured to clamp the device to a protection sleeve.

Abstract: Disclosed is a method for processing a sputtering target comprises: processing a sputtering target by rotating a cutting tool which has a blade portion with an arc-shaped concave curved surface on a cross section along the axis, around an axis thereof, to chamfer the target at a corner portion between a sputtering surface and a side surface in the sputtering target with an arc-shaped concave curved surface of a blade portion in such a manner that the corner portion is approximated to an arc-shaped aimed R face, wherein the sputtering target is chamfered at the corner portion in such a manner that a curvature radius Ra of the concave curved surface in the blade portion is equal to or more than a curvature radius Rb of the aimed R face on the cross section along the axis and that both ends of the concave curved surface in the blade portion are positioned away from the sputtering target.

Abstract: The invention concerns a family of insertable temporary fasteners (100) comprising the following: a body (101) with a bearing face (102) at least one clip (103) with a hooking spur (104) a threaded rod (105, 205) connected to the clip, with a control nut (107, 207) screwed onto the said rod The family comprises at least two temporary fasteners (100) with different diameters and nuts with different lengths (116). The invention also concerns a set comprising such a family of fasteners, along with an installation device (13) comprising a means (26, 30) of detecting the length of the nut. The invention enables the installation device to automatically determine the appropriate tightening torque when installing the fastener based on the length of the nut.

Abstract: 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.

Abstract: The present invention relates to a drill guide for use in drilling an acetabular tunnel. The drill guide comprises a cannulated shaft having a handle towards a proximal end, and an offset arm towards a distal end. The arm is flexible or pivotable and has a distal tip for engaging the articular surface of the acetabulum, and is offset from a projected path of the shaft cannulation.

Abstract: A depth limiting device for a drill includes a main body, an axial braking structure, and a limited shrinking structure. The axial braking structure is attached to the main body. The limited shrinking structure surrounds a drill rod of the drill, is slidably attached to the main body, and is in a home position or a compressed position. The axial braking structure axially brakes the drill rod such that the drill rod moves together with the depth limiting device. When the drill rod enters into a subject, the limited shrinking structure is pressed against the subject, moves from the home position to the compressed position, and stops the drill rod from entering further into the subject.

Abstract: An occlusal cutting and sculpting device for dental applications utilizing a cutting head having a tapered abrasive surface. The cutting head terminates in first and second end portions. A collar overlies and connects to the first end portion of the cutting head and is constructed with a first surface extending outwardly from the cutting head and a curved second surface adjacent the first surface lying apart from the cutting head.

Abstract: The invention relates to surgical guides which are of use during reconstructive bone surgery for guiding a surgical instrument or tool. More particularly, the guides are characterized in that they are fitted to the implant rather than to the bone.

Abstract: An apparatus is an implant-dentist more readily identifiable visual segregation amongst their oral-surgery arbor-tools used conjunction with a conventional hand-held power/rotary-tool. The arbor-tools generally has at least a tri-echeloned set, wherein are included progressions of drill-bit lengths and companion thread-taps appearing in three different diameters. Additionally, the drill-bit shanks are optionally provided with a radial-flange serving as an automatic depth-stop device and these radial-flanges may include a distinctive annular-marker device serving to readily indicate the length of the selected drill-bit, thereby obviating usual procedure of stopping to confirm via the obscure conventional alpha-numeric indicia.

Abstract: A drill bit has a shank adapted to be attached to a power tool and a cutting portion adapted to drill a hole in a material. A collar is spaced along the length of the drill bit to set a depth distance that the drill bit is allowed to be inserted into a material being drilled. The drill bit further comprises a first engagement structure. A sleeve comprises a second engagement structure that is releasably engageable with the first engagement structure. The sleeve further comprises a coupling mechanism for connecting the sleeve to a fastener driver.

Abstract: A tool for assembling parts to be connected to each other includes, a body for rotating a first end and a second end of a bolt, and a holder attaching to the body for holding a fastener against rotation and in alignment with the second end of the bolt. The fastener does not rotate while rotatably receiving the second end of the bolt.

Abstract: A positioning sleeve assembly adapted for engaging with drill bit holder or screwdriver bit is provided with a sleeve and an engaging device. The engaging device includes a drive shaft at one end and an inserting hole at another end. The engaging device is inserted in the sleeve with the drive shaft located one end of the sleeve, and the inserting hole at the other end of the sleeve. The inserting hole at one end of the engaging device is suitable for both engaging with a drill bit holder and a screwdriver bit, so that a single positioning sleeve assembly of the present invention is capable of selectively connecting drill bit and screwdriver bit.

Abstract: The invention relates to a stop for arrangement on a drilling, milling or countersinking tool for machining a work piece, wherein the work piece has a surface, and wherein the drilling, milling or countersinking tool has a cutting section. The stop comprises a contact surface, wherein the contact surface is arranged such that once a predetermined machining depth in the work piece is reached, the contact surface is seated against the surface, at least in some sections. A connecting element is provided, wherein the connecting element is arranged between the contact surface and the cutting section. The connecting element is suited to prevent a relative movement between the contact surface and the surface.

Abstract: A depth limiting device for a boring tool having stop collar includes housing and a sleeve. The housing provides snap on attachment onto the stop collar, allowing for a free axial rotation of the said housing around the body of the stop collar. The housing and the sleeve have a threaded engagement for adjusting position relative to one another and thereby adjusting length of the working portion of boring tool. Coupled housing and sleeve are freely rotatable with respect to the body of the stop collar and cease to rotate when operator achieves desirable depth of drilling and the device is pressed against the work-piece surface. The structural interrelationship prevents marring of the surface of the work-piece.

Abstract: An electric case trimmer assembly utilizes an inexpensive case adapter bearing to adapt for each size case. The case trimmer assembly includes an end mill for cutting excess material from the case. The end mill is fixed to a micrometer dial threadedly engaging a barrel. The case adapter bearing is fixed to the barrel. The micrometer dial is rotated to adjust the position of the end mill with respect to the case adapter bearing to precisely adjust the amount of material cut from the case. The case adapter bearing is easily changed to trim different cases.

Abstract: The present invention relates to a chamfer device for machining a weld bead surface, which specifically carries out a chamfering process on the welding bead surfaces of objects to be processed (such as metal sheet materials and pipes). In the present invention, immediately after a chamfering-amount-adjustment unit has been rotated and released, a position-setting pin is inserted into a securing recess in the chamfering-amount-adjustment unit, while the chamfering amount is adjusted in precise units and simultaneously locked at a predetermined chamfering amount which is automatically maintained, and the adjustment of the chamfering amount is achieved in a straightforward fashion with just one touch. When the chamfering-amount-adjustment unit is operated, a mobile cutter shaft moves vertically and as it does so the chamfering amount is adjusted in such a way that the chamfering amount can be immediately and rapidly adjusted while continuously operating without regard to any cutter rotation action.

Abstract: A depth gauge for use with a drill bit includes a body configured to receive a drill bit, a retention mechanism coupled to the body and configured to removably couple the body to the drill bit, and a cap configured to be removably coupled to the body. The cap can be coupled to the body in one of a first position relative to the body where the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a first depth, and a second position relative to the body where the cap contacts the workpiece surface to prevent the drill bit from entering the workpiece more than a second depth that is different from the first depth.

Abstract: A drill bit has a shank portion having a plurality of SDS-type slots, a cutting portion comprising at least one cutting flute, and an intermediate portion connecting the shank to the cutting portion, the intermediate portion including at least one longitudinal slot. A depth gauge includes a body configured to receive the drill bit, a retention mechanism coupled to the body and having an inward projection to removably couple the body to the at least one additional slot in the drill bit, and a cap coupled to the body such that the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a predetermined depth, wherein the cap is movable relative to the body among a plurality of positions, wherein each of the plurality of positions corresponds to a different predetermined drilling depth.

Abstract: The present technology relates to adjustment mechanisms for control settings on stud weld tools. Stud welding tools typically have a body that comprises a handle, a front end and a rear end. In one aspect, the present technology relates to plunge adjustment mechanisms for stud welding tools that are located at the front end of a stud welding tool and provide an adjustment knob for manual plunge adjustment. Another aspect of the present technology relates to weld heat adjustment mechanisms for stud welding tools that are located at the rear end of a stud welding tool and provide an adjustment knob for manual weld heat adjustment.

Abstract: A countersink cutter or drill/countersink combination or similar rotary cutter or assembly for drilling/countersinking or performing similar cutting operation to precise depths in various applications, including aerospace applications, uses a pneumatically driven pistol grip motor attached to a tool assembly or countersink tool assembly. The countersink tool assembly, which has a multi-fluted cutter, is coupled to and is coaxial with the spindle. The cutter can be preset to a precise depth at the back end of assembly through the slot or using gage stops on the guide rods fastened to brackets by setting the gage between gage stops and the bracket.

Abstract: In a device for limiting the advance during a drilling operation, which can be used in conjunction with a hand drill or with an automatic manufacturing machine, the device comprising a housing with a stop cage and a spindle mounted rotatably and axially displaceably in the housing, and a stop which is adjustable in the axial direction being arranged for limiting the advance, the invention consists in that the stop cage (2a) comprises a pin fixed to the housing for breaking the chips, with a housing-side end and a free end, in such a way that it extends approximately parallel and directly adjacent to the workpiece surface and approximately radially from the outside towards the drilling tool in such a way that its free end almost touches the countersink. Damage to the surface of workpieces is prevented by the invention, so that corresponding refinishing is avoided. Moreover, the removal of the coiled chips from the drilling tool previously necessary after each drilling cycle is dispensed with.

Abstract: A drill bit has a shank portion having a plurality of SDS-type slots, a cutting portion comprising at least one cutting flute, and an intermediate portion connecting the shank to the cutting portion, the intermediate portion including at least one additional slot. A depth gauge includes a body configured to receive the drill bit, a retention mechanism coupled to the body and having an inward projection to removably couple the body to the at least one additional slot in the drill bit, and a cap coupled to the body such that the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a predetermined depth, wherein the cap is movable relative to the body among a plurality of positions, wherein each of the plurality of positions corresponds to a different predetermined drilling depth.

Abstract: A countersink cutter or assembly for countersinking to precise depths in various applications, including aerospace applications, uses a pneumatically driven pistol grip motor attached to a countersink tool assembly. The countersink tool assembly, which has a multi-fluted cutter, is coupled to and is coaxial with the spindle. The cutter can be preset to a precise depth at the back end of assembly through the slot using a gage.

Abstract: A hole saw includes a depth stop for limiting the depth of penetration of the hole saw into a workpiece. The blade of the hole saw includes a plurality of slots, one of which is used to receive the depth stop. The depth stop is mounted to the blade by positioning a portion of the depth stop within the slot and sliding the depth stop from an unsecured position to a secured position. Once in the secured position, a locking member is moved within the depth stop to secure the depth stop in place. In use, the blade is advanced through the workpiece until the depth stop contacts the proximal surface of the workpiece.

Abstract: In one advantageous embodiment, an apparatus may comprise a housing having a first end, a second end, and a number of dimensions. Also, the apparatus may comprise a inner cylinder extending through the housing from the first end to the second end in which the inner cylinder is configured to receive a tool at the first end and is configured to a engage a tool holder at the second end in which the number of dimensions of the housing is configured to reduce vibrations during a machining operation.

Abstract: A drill countersinking and seal groove machining tool to accommodate an accurate drill countersinking and seal groove machining operation. The linear compensator tool applies sufficient force to react to the drilling or seal groove machining process, but not so much force as to distort the work piece being drilled or machined. The tool ensures that the reactant force does not exceed the machine force override allowances. Varying spring rates and/or air pressures on the linear compensator system will accommodate most applications. The tool absorbs over travel of the machining tool, in order to ensure that the surface to be machined is always in contact with the machining tool.

Abstract: A drill sleeve is provided for guiding a bone drill in alignment with the screw holes and drill guides. The drill sleeve includes a cylindrical body having a first end, a second end and a longitudinal axis extending therebetween. The cylindrical body includes a longitudinal bore therethrough that is sized for passage of a bone drill. The drill sleeve also includes a frictional retaining element for exerting a bearing force against the surface of the bone drill, such that the frictional retaining element may support at least the weight of the drill sleeve on the bone drill. The bone drill has graduated indicia, and a portion of the drill sleeve may be referenced relative to the indicia so as to be used as a depth gauge for determining the length of a drilled hole in order to select a screw fastener having the appropriate length.

Abstract: A drilling bit with the depth-limiting and angle-leading function for the carpenter's work, having a covering sleeve (with a driving shaft) and a bit holder for securing a bit. A limit ring and a screw socket (with female thread) are screwable to the covering sleeve (with the male thread) for adjusting the depth of the spot-faced hole in a workpiece (to be drilled) according to the actual operation requirement.

Abstract: A drill guide for use with an orthopaedic drilling device includes a base and a sleeve movably coupled to the base. The base is configured to be coupled to a surgically-prepared surface of a patient's bone and includes cylindrical body defining a passageway therethrough and a pin coupled to the body. The sleeve includes a slot and the pin of the base is received through the slot of the sleeve.

Abstract: Described herein is a cranial surgery drill bit having a safety self stopping mechanism for use on bone material to prevent or repair skin erosion and infection which may result from the placement of a cap for holding the lead from Deep Brain Stimulation surgery. The surgical procedure of attaching a lead holding cap onto the bone material of a skull requires an attachment which results in no movement of the lead. Accordingly, counter boring the skull surrounding a pre-existing perforation bore so that the cap is not significantly above the surface of the skull is a technique which allows the cap user to brush hair, etc., without disrupting the attachment and placement of the lead.

Abstract: To provide a detachable stopper fixed on a spindle part of a dental drill to regulate the depth of an implant fixture embedding hole in an implant treatment, the detachable stopper includes a stopper main body 1 being made of an elastically deformable metal material, having a cylindrical shape, having a slightly smaller inner diameter than an outer diameter of the spindle part, having a slit part 1a formed along an axial overall length from an outer peripheral face to an inner peripheral face to have an opening, and having a diameter expanding tool insertion part 1b bored at an axial center of the slit part 1a, and a diameter expanding tool 2 to be inserted into the diameter expanding tool insertion part 1b to expand the inner diameter of the stopper main body 1 to be larger than the outer diameter of the spindle part.

Abstract: A countersink assembly including a countersink sleeve body with a distal cutting edge, a longitudinal bore to receive and secured to a drill bit, and a flute extending from the distal cutting edge. A depth stop collar having a longitudinal bore is disposed on and secured to the countersink sleeve body. In an example embodiment, the longitudinal bore of the depth stop collar includes at least one passage for chip egress. In addition or in the alternative, the flute includes a flat surface and a part cylindrical surface extending from the distal cutting edge along the length of the flute at an angle to the longitudinal bore of the countersink sleeve body so as to present a slight down-cut spiral.

Abstract: A countersinking-carrier nozzle has a flat front surface with a central hole via which emerges a countersinking drill, such that said flat front surface establishes a limit to the penetration depth of the countersinking nozzle. The nozzle includes a flexible retainer for the nozzle front surface so that it swivels when making contact with a curved countersinking surface, adapting itself tangentially to it while the headstock presses against the countersinking surface. The flexible retainer is defined by a ball-and-socket joint including a curvo-concave retaining receptacle, with the possibility of swivelling, with a complementary curvo-convex portion provided in the rear part of the flat front surface. This portion projects with respect to the receptacle to allow it to swivel when pressed against the countersinking surface, at which moment the complementary curvo-convex portion of the rear part of the front surface swivels in the receptacle of the headstock.

Abstract: A drilling bit with the depth-limiting and angle-leading function for the carpenter's work, having a covering sleeve (with a driving shaft) and a bit holder for securing a bit. A limit ring and a screw socket (with female thread) are screwable to the covering sleeve (with the male thread) for adjusting the depth of the spot-faced hole in a workpiece (to be drilled) according to the actual operation requirement.

Abstract: A boring arrangement is adapted to be connected to a boring machine. The boring arrangement includes, but is not limited to a boring bit for boring a final hole or a countersink hole in a hole of a workpiece with a fastening portion adapted to be secured to the boring machine. A stopping element is also included that is movably connected to the boring bit so as to enable a relative motion in a boring feed advance direction and with an end facing away from the fastening portion and further an element movable to the boring bit so as to enable a relative motion in the boring feed advance direction. The element has a hollow interior space therein adapted to allow the boring bit to pass therethrough in the boring feed advance direction so as to contact the workpiece and bore a final hole or a countersink hole therein. The element includes, but is not limited to an end facing towards to the stopping element.

Abstract: A drill bit has a shank portion having a plurality of SDS-type slots, a cutting portion comprising at least one cutting flute, and an intermediate portion connecting the shank to the cutting portion, the intermediate portion including at least one additional slot. A depth gauge includes a body configured to receive the drill bit, a retention mechanism coupled to the body and having an inward projection to removably couple the body to the at least one additional slot in the drill bit, and a cap coupled to the body such that the cap contacts a workpiece surface to prevent the drill bit from entering the workpiece more than a predetermined depth, wherein the cap is movable relative to the body among a plurality of positions, wherein each of the plurality of positions corresponds to a different predetermined drilling depth.

Abstract: A drill bit assembly is disclosed and can include a drill bit and a drill stop sleeve disposed around the drill bit. The drill stop sleeve can include a locking collar that can be movable between an unlocked position and a locked position. In the unlocked position, the drill stop sleeve can be movable along the drill bit to one of a plurality of drill stop depths. In the locked position, the drill stop sleeve can be locked along the drill bit in one of the plurality of drill stop depths.

Abstract: A dental drill (10) defining a bore diameter and a drill stop sleeve (22) which is transparent or translucent, thereby improving the view of the drilled hole formed by the drilling during the operation. The drill stop sleeve (22) comprises an uninterrupted circumferential lip (34), which interacts with a groove (24) formed in the shank part (16) of the dental drill (10) and thus fixes the drill stop sleeve (22) on the dental drill (10). The drill stop sleeves (22) of equal length are held in a blister of a set, the blister having, for each drill stop sleeve (22), a specific receiving recess that is closed in a sterile manner. Each blister comprises several drill stop sleeves with sleeve diameters corresponding to the bore diameters.

Abstract: A hole saw includes a depth stop for limiting the depth of penetration of the hole saw into a workpiece. The blade of the hole saw includes a plurality of slots, one of which is used to receive the depth stop. The depth stop is mounted to the blade by positioning a portion of the depth stop within the slot and sliding the depth stop from an unsecured position to a secured position. Once in the secured position, a locking member is moved within the depth stop to secure the depth stop in place. In use, the blade is advanced through the workpiece until the depth stop contacts the proximal surface of the workpiece.

Abstract: A safety mechanism includes multiple positioning recesses defined in a bottom face of the head of the adjusting sleeve, a stop received in one of the positioning recesses, a slot defined in a top face of the body, an urging spring received in the slot, and a urging ball partially received in the slot and urged by the urging spring. Therefore, rotation of the adjusting sleeve relative to the body is limited due to engagement between the urging ball and the stop which is received in one of the positioning recesses and separation between the adjusting sleeve and the body is avoided.

Abstract: A miter joint assembly system. The system comprises a generally planar assembly plate. A clamping assembly is attached to the assembly plate. At least one drill guide is detachably coupled to the assembly plate at a predetermined orientation. The clamping assembly is configured to releasably secure a first and a second mitered molding to the assembly plate such that the first and second mitered moldings are oriented generally orthogonally to each other. The drill guide is configured to bore a pocket hole and a pilot hole into the first mitered molding, the pocket and pilot holes receiving a fastener to draw and secure the second mitered molding to the first mitered molding.

Abstract: 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.

Abstract: A device to collect cuttings produced by a cutting tool may include a chip cutter to shear each cutting into a multiplicity of chips each substantially smaller than each cutting. The device may also include a collector to collect the chips without using suction and other air or gas pressure. The chip cutter may be disposed within the collector.

Abstract: 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.

Abstract: A reaming tool for reaming a socket in a broken end portion of a cylindrical conduit enlarges the internal diameter of the broken end portion to provide a socket for receiving a male end portion on a repair coupling. The reaming tool is guided by the inner diameter of the conduit while reaming out the broken end portion to a socket diameter that is about midway between the original internal and outer diameters of the conduit.

Abstract: A tool positioning device and a machining element have simple structures which can reduce running cost. In addition to a hole that engages with a shank of an end mill, a channel is provided so that it penetrates through the device such that one end thereof communicates with an upper face of the device and the other end communicates with a lower end of the device. In this case, it is more effective to provide a concave portion that is opened to the upper face and communicates with the hole. The same effect may be obtained by making a cylindrical hole, for example, instead of the channel.

Abstract: A device (20) for orienting a work tool (10) at a predetermined attitude relative to a work piece includes a base (22) having a first surface (34 or 44) abuttable against a work piece, a sleeve (24) coupled to the base, and a shaft (26) slidably receivable within the sleeve. The shaft has a first end portion (80) and a second end portion (82), wherein the first end portion is connectable to a work tool and the second end portion is connectable to an actuator for actuating the work tool.