1804results about "Trepanning drills" 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.

Quick-change hole saw mandrel (10) for a hole saw (18); includes drive shank (14) extending along a central axis (C); and mounting end (16) detachable connected to mounting aperture (26) of hole saw (18) and including drive pin (30) for engagement with drive pin aperture (28) of the hole saw (18). The mandrel (10) includes a gripping arrangement (32) insertable through the mounting aperture (26) for gripping the hole saw base (20). In a normally expanded configuration the gripping arrangement (32) grips the base (20). The gripping arrangement is selectively movable to a contracted configuration in which it can be inserted into or removed from the mounting aperture (26). A pilot bit lock selector (44) for selecting between an unlocked mode permitting quick removal and quick insertion of the pilot bit (12) and a locked mode in which the pilot bit (12) is locked against removal.

The invention relates to the technical field of plate punching, and discloses a plate punching device for mechanical part manufacturing, which comprises a base, the top of the base is fixedly connected with a vice, the top of the base is fixedly connected with a supporting column, the outer wall of the supporting column is slidably connected with a sliding frame, and the side wall of the sliding frame is slidably connected with a sliding table. A fixing cylinder is rotatably connected to the bottom of the sliding table, after a plate is fixed by a user, a drill bit is made to rotate through a supporting assembly and a driving assembly, the plate is drilled till a spring reset rod is pressed to make contact with the bottom of an arc-shaped telescopic sleeve, the edge of a hole is extruded by a conical scraper, burrs on the edge of the hole are scraped away, and the plate is fixed through a fixing cylinder. The drill bit and the conical scraper rotate synchronously to fit the edge of a hole and remove burrs on the edge of the hole, so that the problem that the center of the hole is difficult to align when a cutter is replaced to remove the burrs after drilling is completed is effectively prevented, and synchronous drilling and deburring is realized.

A holesaw assembly can include a holesaw, a pilot drill, an arbor, and a retainer. The holesaw can include a base and a cylindrical wall coupled to the base. The cylindrical wall terminates away from the base in a cutting edge and defines an internal space. The drill bit can include a cutting tip and an elongate shaft portion. The arbor can include a first portion configured to be couplable with a tool holder of a power tool and a second portion configured to be coupleable with the holesaw. The arbor can be configured to receive the drill bit and facilitate movement of the drill bit between an extended position and a retracted position relative to the arbor while the drill bit remains coupled to the arbor. The cutting tip is closer to the first portion of the arbor in the retracted position than in the extended position. The retainer can be configured to selectively maintain the drill bit in the retracted position. Release of the retainer can allow movement of the drill bit from the retracted position toward the extended position.

This drill has an integrally formed extension (3) at its front end, which is smaller in diameter than the other drill bit (1). The extension (3) at the front end of the drill bit (1) preferably has a diameter d that is half the diameter D of the remaining drill bit (1) located behind the extension (3). The drill bit allows for perfect positioning, centering, and guidance of the hole along the intended drilling line.

The invention discloses an efficient chip removal and cooling device for a drill bit, and relates to the field of drilling tools. An efficient chip removal and cooling device for a drill bit comprises a mounting frame, and further comprises a sliding frame, a chip removal device and a cooling device, the mounting plate is connected to the sliding frame in a lifting mode, a rotating sleeve is rotationally connected to the mounting plate, a drill bit is detachably connected to the rotating sleeve, and a chip groove is formed in the outer wall of the drill bit; according to the drill bit, the spiral chip removal groove in the outer wall of the drill bit is matched with the cooling liquid obliquely and upwards sprayed out of the liquid spraying holes, the cooling liquid generates upward scouring force on cuttings, the chip removal capacity is greatly improved, cuttings are effectively prevented from being blocked, and the chip removal efficiency and the drilling quality are improved; cooling liquid enters the spiral cooling cavity through the liquid supply pump via the liquid conveying pipe and the rotary connector, the contact area of the cooling liquid and the drill bit is increased, the retention time of the cooling liquid and the drill bit is prolonged, the cooling effect is remarkably improved, the temperature of a drill lip is reduced, and the service life of the drill bit is prolonged.

The invention relates to the technical field of cutting tools, in particular to a trilateral-handle efficient counter bit convenient to install, which comprises a chuck base, a first rotating sleeve rotationally installed in the chuck base, an installation rod and a trilateral-handle main body, a first limiting clamping block is rotationally installed on the inner wall of the chuck base, and a second limiting clamping block is rotationally installed on the inner wall of the first limiting clamping block; the first limiting clamping block is rotationally sleeved with a first rotating sleeve, the first rotating sleeve is rotationally sleeved with a second rotating sleeve, the inner wall of the second rotating sleeve is fixedly connected with a third limiting clamping block used for limiting the position of the second rotating sleeve, and the moving disc moves in the direction close to the threaded groove. Lubricating oil between the movable disc and the inner wall of the fixing sleeve is compressed, the compressed lubricating oil is pressed in along a hole between the threaded groove and the positioning screw rod, it needs to be noted that the inner diameter of the threaded groove is smaller in the direction closer to the movable frame, and no gap overflows when the lubricating oil reaches the tail end of the threaded groove; therefore, the fixed sleeve and the positioning screw rod are lubricated.

To provide a drill which can enhance abrasion resistance, thereby can extend the life of a tool.SOLUTION: A thinning edge, a main cutting edge and a leading edge have a honing H having a projecting curve-shaped cross section vertical to each ridge line part, in the cross section, among both ends h1 and h2 of the honing H, a surface connected to a first end h1 is defined as a first surface 101, a surface connected to a second end h2 is defined as a second surface 102, a distance between the first end h1 and an intersection P between the extended line of the first surface 101 and the extended line of the second surface 102 is defined as a first width dimension L1, a distance between the second end h2 and the intersection P is defined as a second width dimension L2, [L1 / L2] is defined as a width ratio, as for the thinning edge and the main cutting edge, the first surface 101 is defined as a rake surface, the second surface 102 is defined as a rake surface, and the width ratio of the thinning edge is larger than the width ratio of the radial outer end connected to an outer peripheral corner in the main cutting edge.SELECTED DRAWING: Figure 5

To provide a drill which can enhance abrasion resistance, thereby can extend the life of a tool.SOLUTION: A cutting edge 7 has a thinning edge 70 arranged on the radial inner end of the cutting edge 7, and a main cutting edge 71 which is arranged on the radial outer side of the thinning edge 70, and is connected to a leading edge 12 through an outer peripheral corner 15, wherein the main cutting edge 71 and the leading edge 12 have a honing having a projecting curve-shaped cross section vertical to each ridge line part, and a honing curvature radius at a position within 1.5 mm toward the rear end side from the outer periphery corner 15 in the leading edge 12 is 25 μm or more and 80 μm or less, and is smaller than a honing curvature radius on the radial outer end connected to the outer periphery corner 15 in the main cutting edge 71.SELECTED DRAWING: Figure 1

The present invention is applicable to the technical field of drilling tools and provides a self-cleaning drill bit and a method of use, including a pagoda drill body; a retaining frame is rotatably provided on the side surface of the connecting shaft; and also includes a protective part that slides with the retaining frame; a stepped guide part that is consistent with the structure of the pagoda drill body is slidably provided inside the fixed seat; a lifting plate is slidably provided on the inner wall of the storage box; a first cleaning part that is compatible with the conical spiral discharge groove and the conical spiral guide groove is slidably provided on the lifting plate and the inner wall; a second cleaning part that is compatible with the pagoda drill body is slidably provided on the inner wall of the storage box. The device controls the pagoda drill body to rotate slowly forward and backward, guides the first cleaning part through the conical spiral discharge groove and the conical spiral guide groove, drives the first cleaning part to rise and fall, and drives the cleaning sleeve to clean the dust and debris in the conical spiral discharge groove, thereby improving the cleaning efficiency and effect of the pagoda drill body.

The utility model belongs to the field of milling machine tools, and particularly relates to a punching tool suitable for composite boards, which comprises a forming tool bit, a tool body, a pre-cutting tool bit and a chip removal device, the pre-cutting tool bit and the forming tool bit are distributed at intervals along the axial direction of the tool body, the pre-cutting tool bit is arranged at one end part of the tool body, and the chip removal device is arranged at the other end part of the tool body. The forming tool bit is located at the position, close to the inner side of the end, of the pre-cutting tool bit, and the diameter of the forming tool bit is larger than that of the pre-cutting tool bit. The inner wall of the composite board forming hole can be prevented from being damaged, and the size precision of the forming hole is ensured.

The present disclosure relates to a tool holding arrangement (1, 1′, 1″) comprising a rotatable shaft (2, 2′, 2″) which is at least connectable to a tool driving power source (3) and comprises a first shaft thread (4, 4′). The tool holding arrangement (1, 1′, 1) comprises a thread insert (5, 5′) that comprises a first insert thread (6, 6′), adapted to engage the first shaft thread (4, 4′) so as to form a first thread arrangement (4, 6; 4′, 6′). The thread insert (5, 5′) comprises a second insert thread (7) that is adapted to engage a tool thread (8) of a tool holding device (9) that is arranged to be 2 screwed onto the second insert thread (7) so as to form a second thread arrangement (7, 8), the first thread arrangement (4, 6; 4′, 6′) having a higher pitch than the second thread arrangement (7, 8).

To provide a body provided with a flow passage having a sufficient cross-sectional area while securing sufficient rigidity, and a cutting tool.SOLUTION: A body 10 of a cutting tool 1 includes: an insert pocket 20 to which a cutting insert 60 is attached; a screw hole 22 into which an insert mounting screw 70 for fastening the cutting insert 60 to the insert pocket 20 is screwed and inserted; and a chip discharging coolant flow passage 50 for discharging coolant C from a discharge port 52 open at a tip. In a cross section orthogonal to an axial direction, at least a portion of the chip discharging coolant flow passage 50 has a distance Da from the insert pocket 20, a distance Db from the screw hole 22, and a distance Dc from an outer periphery 10c of the body 10 which are equal to or larger than a prescribed dimension.SELECTED DRAWING: Figure 5

A cutting tool system may include a tool body, a flexible internal pressure chamber, and at least one cutting edge. The flexible internal pressure chamber may be disposed within the tool body. The at least one cutting edge may be attached to the tool body. The flexible internal pressure chamber may be configured to elastically deform, due to pressure within the flexible internal pressure chamber, which in turn may deform the tool body, which in turn may change a position of the at least one cutting edge attached to the tool body.

The utility model discloses an adjustable metal cutting tool which comprises a tool fixing assembly, a grinding head, a drill bit, a drill bit position adjusting assembly and a locking mechanism, a cavity used for containing the drill bit position adjusting assembly is formed in the tool fixing assembly, and the cavity penetrates through one end to form an opening; the drill bit position adjusting assembly is arranged in the cavity, the grinding head is arranged at the open end of the cutter fixing assembly, and the drill bit is arranged at the end of the drill bit position adjusting assembly and extends out of the grinding head under the action of the drill bit position adjusting assembly. The locking mechanism is connected with the drill bit and the drill bit position adjusting assembly. The drill bit position adjusting assembly is arranged to drive the drill bit arranged at the tail end of the drill bit position adjusting assembly to extend out of the grinding head, the functions of grinding and drilling selection of the whole device are achieved, the connecting stability of the drill bit is improved by arranging the locking mechanism, and the risk that the drill bit falls off is reduced.

A cutting insert (10) of a rotary drill tool (1) for cutting metal comprises a head (14) and a neck extending along a longitudinal axis (12). The head has an axially forward-facing cutting region (13). At least the neck is configured for enabling releasably mounting at a support body (11). The head is formed by at least two lobes (33) each having a radially outermost envelope surface (23). Each lobe comprises a radially and axially extending torque transfer surface (17) configured for abutment contact with a corresponding torque transfer surface(29) of the support body. In a plane extending perpendicular to the longitudinal axis, the torque transfer surface has an orientation relative to the radial direction (RT) at an angle (α) in the range 15 to 45°, or 22 to 35°, or 28 to 33°, or 28 to 29°. A corresponding support body and a rotary drill tool.

An apparatus that includes a drill bit and a sleeve, and method for using the same is disclosed. In one embodiment, an apparatus may include a drill bit that has a shank portion at one end, a lead portion at an opposite end, and an elongated neck portion that connects the shank portion with the lead portion. The apparatus may also include a hollow sleeve that surrounds at least a portion of the elongated neck portion. In one embodiment, a method for using a drill bit and sleeve includes securing the shank portion of the drill bit to a drill chuck, inserting the drill bit and hollow sleeve through a structure, removing the drill bit from the drill chuck, and removing the drill bit from the hollow sleeve such that the hollow sleeve remains within the structure.

The application discloses a drilling tool with concave-convex matching on the side, which comprises a cutting part and a clamping part. The cutting part comprises an end cutting area, a bottom locating surface and a cutting side surface between the end cutting area and the bottom locating surface. The cutting side surface is provided with a plurality of side cutting areas and a plurality of side locating surfaces. The end cutting area and the side cutting area form a cutting area of the cutting part. The side locating surface is provided with an inner mounting hole. The clamping part comprises a clamping groove part and a handle part. The clamping groove part is provided with a bottom clamping surface and a side clamping surface corresponding to the bottom locating surface and the side locating surface respectively. At least one side locating surface is provided with a side locating convex part. The side clamping surface corresponding to the side locating surface is provided with a side clamping concave part. The side locating convex part and the side clamping concave part form a concave-convex matching to determine the mounting direction of the cutting part and realize the circumferential clamping and positioning of the cutting part, so as to transmit the cutting torque and the cutting force between the cutting part and the clamping part in the cutting process. The cutting tool has high rigidity, excellent anti-vibration performance, high positioning accuracy and long service life.

The invention relates to the technical field of deep hole machining, in particular to boring equipment and technology for a fan spindle, the boring equipment for the fan spindle comprises an outer pipe, an inner pipe and a center rod, a fixing seat is arranged at the rear end of the outer pipe, an oil inlet and an oil outlet are formed in the fixing seat, and an annular flow channel is formed between the outer pipe and the inner pipe; a chip removal channel is formed between the inner pipe and the center rod, the oil inlet is communicated with the annular runner, and the oil outlet is communicated with the chip removal channel; the outer pipe is further provided with a liquid passing hole, and the cutting fluid in the annular flow channel flows back into the chip removal channel through the liquid passing hole. A first spiral groove is formed in the peripheral face of the front end of the inner pipe, and cutting fluid can drive the inner pipe to rotate when flowing through the first spiral groove. The front end of the center rod is a conical head, a second spiral groove is formed in the peripheral face of the conical head, and when the cutting fluid flows back to the chip removal channel, the inner pipe drives the cutting fluid to rotate and flow along the second spiral groove, so that backward suction force is generated in the chip removal channel, and waste of the cutting fluid is avoided while chip removal is achieved.

An indexable drill insert includes a drill body having a central longitudinal rotational axis (CL), the drill body comprising a shank portion and a fluted cutting portion, the fluted cutting portion having a front clearance face and a plurality of flutes, the fluted cutting portion includes a central insert pocket capable of receiving a central cutting insert and a peripheral insert pocket capable of receiving a peripheral cutting insert. For the central cutting insert, a central, longitudinal axis of a projection of the flute coolant exit aperture can intersect a vertical plane (PA1) having an area (A1) or a horizontal plane (PB1) having an area (A2). For the peripheral cutting insert, the central, longitudinal axis of the projection can intersect a vertical plane (PA2) having an area (A3) or a horizontal plane (PB2) having an area (A4).

Provided is a drill that has excellent cutting blade durability and chip discharge. A cutting blade that is provided to a body of the drill has a chisel edge, a first blade, and a second blade. In plan view from a direction along the rotation axis, a boundary section where a boundary between the first blade and the second blade is located has a protruding shape toward the leading side in the rotation direction. The first blade has a first honing surface, the second blade has a second honing surface, and the chisel edge has a third honing surface. In plan view from a direction along the rotation axis, the width of the third honing surface decreases toward the outer periphery of the body, and the width of the first honing surface at the boundary section is smaller than the maximum value of the width of the first honing surface.

A deburring tool includes a body including a cylinder chamber having a tool holder holding hole, and an anti-rotation body holding hole; a tool holder having an anti-rotation groove and disposed in the cylinder chamber to reciprocate in the cylinder chamber; a first elastic body disposed inside the cylinder chamber to urge the tool holder toward a distal end; a cover disposed outside the body to reciprocate between a detaching position and a processing position, the cover including, a pressing surface that covers the anti-rotation body holding hole at the processing position, and a relief portion; and an anti-rotation body accommodated in the relief portion when the cover is positioned at the detaching position and the tool holder is pulled from the tool holder holding hole.

The invention discloses a drill bit and a drilling machine with built-in cooling flow channels, and relates to the technical field of deep hole cutting, the drill bit comprises a cutting section and a drill handle which are coaxially arranged, the drill handle is fixed above the cutting section, and the cutting section is internally provided with a through type cooling channel; the cooling channel comprises a liquid inlet flow channel formed in the drill handle and a flow channel hole which extends into the drill handle in the axial direction of the cutting section and intersects with the liquid inlet flow channel, and the tail end of the flow channel hole penetrates through the drill tip and points to the cutting area. The drill handle comprises a spline shaft, a spline sleeve and a fixing sleeve. The problems that in the prior art, a constant-pressure cooling mechanism and a static flow channel design of a drill bit cannot adapt to dynamically-changing flow resistance in deep hole machining, and consequently cooling of a cutting area fails are solved. The drill bit with the built-in cooling flow channel has the advantages that accurate synchronization of on-off of cooling liquid and cutting actions is achieved through mechanical linkage, splashing of the cooling liquid is thoroughly eradicated based on a depth self-adaptive flow control mechanism triggered by bit pressure, the service life of the drill bit is remarkably prolonged, and the drilling quality is remarkably improved.

An abrasive article can include a core and an abrasive component attached to the core. The abrasive component may include a body including a leading end and a trailing end, wherein the leading end has a width greater than a width of the trailing end. In an embodiment, the abrasive component may include a body including a first abrasive portion and a second abrasive portion, wherein a radial width of the first abrasive portion is greater than a radial width of the second abrasive portion.

A rotary cutting tool comprising a tool body (2) and a cutting head (30) with a coupling portion (31) receivable between axially projecting coupling legs (12) on the tool body. Each coupling leg has a torque transfer surface (15), which is configured to abut against a corresponding torque surface (35) on the cutting head in order to transfer torque from the tool body to the cutting head. Each one of said torque surfaces (35) on the cutting head is convex as seen in any plane that is perpendicular to the centre axis (C2) of the cutting head and extends across the torque surface (35), and / or the torque transfer surface (15) on each one of said coupling legs is convex as seen in any plane that is perpendicular to the centre axis (C1) of the tool body (2) and extends across the torque transfer surface (15).

A spade drill bit includes a shank extending along an axis from a rear end to a front end, the rear end configured to be coupled to a tool holder of a power tool, a blade including a paddle extending along the axis with a front portion and rear portion coupled to the front end of the shank, and a tip coupled to the front portion of the paddle. First and second primary cutting edges are disposed on a front edge of the front portion of the paddle and extend radially outward from the tip. At least the rear portion of the paddle is composed of a first steel alloy. The primary cutting edges are composed of a second steel alloy that has a greater hardness than the first steel alloy.

The invention relates to the technical field of electrical cabinet metal plate machining, and discloses a continuous drilling device for electrical cabinet metal plate machining, a continuous drilling mechanism is arranged on one side of a drilling table body, and fixing mechanisms capable of stacking multiple sets of electrical cabinet metal plates are arranged on the two sides of the drilling table body. The drilling table comprises a drilling table body, a fixing mechanism is arranged on the drilling table body, a pressing mechanism for pressing and covering a metal plate is arranged above the fixing mechanism, a groove structure is formed in the upper surface of the drilling table body, a supporting mechanism capable of transversely sliding is arranged in the groove structure, and a dust removal mechanism for supporting the drilling position of the plate is slidably arranged on the supporting mechanism. Through the fixing mechanism and the pressing mechanism, multiple sets of metal plates can be stacked and fixed, drilling positions of the metal plates can be supported through mutual cooperation of the supporting mechanism and the dust removal mechanism, the drilling effect is improved, and the center supporting mechanism can not only support the plates but also collect powder generated during drilling.

A modular drill is disclosed. The modular drill includes a tool shank extending along a rotational axis. The tool shank includes a shank top end and a shank bottom end along a rotational axis and includes a cam slot extending at least partially through a width of the tool shank. The modular drill includes a cutting head extending from a cutting head top surface to a cutting head bottom surface centered on the rotational axis. The cutting head includes a draw pin extending from the bottom surface of the cutting head along the rotational axis and a draw pin notch. The modular drill includes a clamping cam including a cam shaft contacting the draw pin notch.

The utility model discloses a tapper connecting rod which comprises a rotating handle assembly and a tapping assembly, the rotating handle assembly comprises a drill bit limiting sleeve and a limiting mechanism, the tapping assembly comprises a quick conversion head, a positioning drill bit and a cylindrical tapper, and the limiting mechanism comprises a limiting steel ball and a sliding sleeve; a first limiting hole is formed in the drill bit limiting sleeve, the limiting steel ball is installed in the first limiting hole in a matched mode, a first positioning groove is formed in the lower end of the quick conversion head, and the limiting steel ball and the first positioning groove are matched for limiting. A first limiting part and a second limiting part are arranged on the inner side wall of the sliding sleeve, and the sliding sleeve moves in the axial direction of the drill bit limiting sleeve, so that the first limiting part and the second limiting part are matched with the limiting steel balls correspondingly, and the drill bit limiting sleeve and the quick conversion head are locked or unlocked; the positioning drill bit and the cylindrical tapper can be easily detached and pulled out, and the purpose of rapidly withdrawing waste materials or rapidly replacing the cylindrical tapper is achieved.