1176results 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.

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.

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.

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.

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.

The utility model belongs to the technical field of machining tools, particularly relates to an inner chip removal deep hole drill for machining a multi-hole workpiece, and aims to solve the problems that cuttings are extremely easy to accumulate in holes due to large cuttings generated in the machining process of the conventional device, and the problem of unsmooth chip removal is more prominent especially when holes with larger depths are machined. In order to solve the problems that in the prior art, abrasion of a drill bit is aggravated, meanwhile, the drill bit is heated, and machining quality is affected, according to the scheme, the drill bit comprises a drill bit body, and a drill tip is fixed to one end of the drill bit body; the drill bit has the advantages that the chip dividing grooves, the chip guiding grooves and the chip discharging grooves are continuously matched, chips are divided and are helped to flow into the chip discharging channels, the chips are effectively prevented from being accumulated in holes, machining continuity is guaranteed, cooling media reach a cutting area through multiple components, the drill bit is continuously cooled and prevented from being overheated and abraded, the chips can be efficiently scoured through impact force of the drill bit, and the service life of the drill bit is prolonged. And the chip removal efficiency is greatly improved, the risk that the hole wall is scratched by cuttings is reduced, and the machining precision and the surface quality are ensured.

The invention relates to the technical field of metal processing equipment, in particular to a metal processing U-drill bit and equipment thereof.The metal processing U-drill bit comprises a U-drill bit body, a pair of chip grooves are formed in the periphery of the U-drill bit body, and blade mounting grooves communicating with the chip grooves are symmetrically formed in the top end of the U-drill bit body; the metal machining equipment comprises a base, the top of the base is fixedly connected with a machining table, the top of the machining table is symmetrically and fixedly connected with jacking sliding rails, and the tops of the two jacking sliding rails are slidably connected with a feeding clamp. Through cooperation of the adjusting sliding block and the adjusting screw rod, when a high-hardness workpiece is machined, even if the rotating speed is reduced to avoid tool overload, the supply amount of cooling liquid can still be supplemented by increasing the stroke of the T-shaped piston rod; when a low-hardness workpiece is machined, the output of the cooling liquid is controlled by reducing the stroke of the T-shaped piston rod, so that the cooling requirement of low cutting heat is met, and chip splashing and resource waste caused by excessive cooling liquid are avoided.

The invention discloses a hydraulic drive axial vibration chip breaking cutter handle and a vibration chip breaking method. The vibration chip breaking cutter handle comprises a power mechanism, a vibration mechanism and a torque transmission mechanism. The torque transmission mechanism comprises a shell assembly connected with a machine tool connecting handle. Cooling liquid of a machine tool serves as a power source, and the tool has the axial vibration chip breaking function and the cutting function during hole machining through an ingenious and simple mechanical structure; therefore, no extra power source needs to be added, any structure of the machine tool is not changed, the cost of a user is reduced, and use is simplified; the structural design of vibration chip breaking, torque transmission and the like is ingenious, the structure is simple, and compared with an existing hydraulic pulse type and piezoelectric ceramic driving type vibration chip breaking cutter handle, the vibration chip breaking cutter handle has the advantages in manufacturing cost and using cost; therefore, the device is simpler and more ingenious to use, is widely suitable for the hole machining industry, and has very important significance on deep development of the tool industry.

The utility model relates to a steering gear deep hole machining device, and belongs to the technical field of automobile part machining. The technical scheme mainly solves the problem that time is wasted when drill bits with different sizes and shapes are replaced. Comprising a machining table, the top of the machining table is fixedly connected with a fixing plate, the side wall of the fixing plate is slidably connected with a sliding plate through a driving part, the side wall of the sliding plate is fixedly connected with an air cylinder, the output end of the air cylinder is fixedly connected with a supporting plate, and the side wall of the supporting plate is rotationally connected with a rhombic connecting shaft through a driving part. Drill bits of different sizes can be installed at the same time through the cooperation of the rotating fluted disc, the connecting fluted disc, the connector and the drill bit body, and through the arrangement of the mode, the drill bits of different sizes and shapes can be rapidly switched during working, so that the working efficiency is improved, and the working efficiency is improved. Time delay caused by replacement of other drill bits during working is prevented, and the deep hole machining efficiency of the steering gear is further greatly improved.

The utility model relates to the field of drill bits, in particular to a quick butt joint type drill bit which comprises a drill bit body and a connecting piece, clamping grooves are formed in the upper surface and the bottom surface of the drill bit body, two sliding grooves are formed in the inner wall of the connecting piece, and a movable connecting pin drives a check block to move. The drill bit body is moved to enable the right end of the drill bit body to make contact with the clamping block, the clamping block can move and drive the guide rod to move through the inclined face of the right end of the drill bit body, the first spring is compressed, when the clamping block corresponds to the clamping groove, under the action of the first spring, the clamping block is connected with the clamping groove, the connecting pin is loosened, the second spring is reset, and resetting of the check block is achieved. And on the contrary, when the drill bit is mounted or dismounted, the stop block is moved away, and the drill bit can be dismounted only by pulling out the drill bit, so that the quick butting effect of the device is realized, an operator can quickly butt the drill bit conveniently, the mounting and using time is shortened, and the influence on the working efficiency is prevented.

Twist drill bit having a cutting tip (3) with a stepped structure, consisting of a shank (1), a guide region (2) and the adjoining cutting tip (3) with a stepped structure, the stepped structure of which is interrupted by two flutes (5) winding about a drill bit axis (0), wherein the cutting tip (3) with a stepped structure has a drill bit tip (3.1) with a radius (r0), at which a pair of first main lips (4.1) are formed, and a multiplicity of coaxially arranged cutting steps (3.2), which each have a conical step portion (3.2.1), in which in each case a pair of further main lips (4.2a-4.2m) are formed, and a cylindrical step portion (3.2.2), wherein the cylindrical step portions (3.2.2) have, towards the shank (1), an increasingly large radius (ra-rm), wherein the difference between in each case one of the radii and the next one of the radii (Δr) is chosen such that, upon rotation about the drill bit axis (0), the pair of further main lips (4.2a-4.2m) arranged therebetween sweep in each case over an annular face (Aa-Am), coaxial with the drill bit axis (0), on an imaginary plane (E) arranged perpendicularly to the drill bit axis (0), and the annular faces (Aa-Am) have an identical surface area, such that, during drilling, an identical chip volume is carried away with each pair of the further main lips (4.2a-4.2m).

The invention relates to a machining tool and a combined machining method for a radial eccentric stepped hole of an injector disc, and belongs to the field of eccentric stepped hole machining. The machining tool comprises a detachable guide drill, a detachable reamer, a detachable rose reamer and a detachable reamer. According to the structural characteristics of a cutter and a product, eccentric stepped hole machining is divided into four stage processes of drilling, broaching, chamfering and reaming, and drilling, broaching and chamfering, allowance removal and finishing machining are sequentially completed. And step-by-step machining of the eccentric chamfering stepped hole is achieved. The cutter material, the coating, the cutting edge angle and the cutter split structure are machined step by step, the service life of the cutter is prolonged, and the machining efficiency is improved by more than three times. The combined machining method is adopted, cutter deflection is effectively restrained, chamfering uniformity errors are reduced, aperture control is improved, the roughness of the inner surface of the hole is reduced, the machining efficiency of the injector disc is improved, and the combined machining method is suitable for efficient and precise machining of the spaceflight complex step eccentric hole.

The utility model discloses a U-shaped drill blade which comprises a blade body, the blade body comprises cutting edges with inclined angles, cutting edges of the cutting edges are sawtooth-shaped cutting edges, the cutting edges are arranged on the outer side of the blade body, and the cutting edges are in transition connection through tool nose fillets. The cutting edge comprises an outer cutting edge and an inner cutting edge, and the outer cutting edge and the inner cutting edge are connected through an arc edge; the blade further comprises a plurality of peripheral side faces and chip breaking tables, the chip breaking tables are evenly arranged at the positions, close to the cutting edges, of the blade body, and the distribution shape of the chip breaking tables corresponds to the distribution shape of the cutting edges. The cutting edge is connected with the outer edge of the peripheral side face, and a bottom installation face connected with the peripheral side face is arranged on the opposite side of the cutting edge. The reaping hook sawtooth-shaped continuous cutting edge structure on the blade enhances the chip breaking and cutting functions of the drill blade, and can meet the requirement for strong chip breaking under special working conditions.

To provide a cutting insert, a body, and a cutting tool capable of suppressing a thickness while being usable by switching four cutting edges.SOLUTION: A cutting insert 30 attached to a body 20 of a cutting tool 10 includes: a first surface 110 having a substantially parallelogram shape, including one end surface among a pair of end surfaces facing each other, and functioning as a surface including first rake surfaces 151, 152; a pair of first cutting edges 511, 512 formed along a pair of sides 111, 113 facing each other among sides defining the first surface 110; second surfaces 210, 220 having a substantially trapezoidal shape, including a pair of side surfaces facing each other, and functioning as a surface including second rake surfaces 621, 622; and second cutting edges 521, 522 formed along one side 201, 203 among sides defining the second surfaces 210, 220.SELECTED DRAWING: Figure 1

The application discloses a cutter for machining a tapered hole and relates to the technical field of cutters. The cutter for machining a tapered hole is characterized by the following: an inner lining assembly is arranged in the cutter body; when the cutter body starts to perform a hole opening operation on a hole opening plane, the cutter body will vibrate; the rubber sleeve arranged in the cutter body can buffer and absorb the vibration and has a protection effect, thereby preventing resonance; the abutting piece and the connecting column arranged in the cutter body can improve the structural strength of the cutter body and the supporting effect from the inside to the outside, thereby preventing the cutter body from being bent or broken during hole opening; the service life of the cutter body is prolonged; the cutter body is matched with the cutting edge; the cutter can open a tapered hole with a certain precision; the generated metal scraps can be automatically discharged through the slag discharge groove; the cutter can prevent the problem of continuous rotation and biting of the cutter in the tapered hole; and the cutter has an auxiliary effect on improving the hole opening precision.

This surface-coated cutting tool comprises a base including a WC-based cemented carbide, and a coating layer provided on the base and comprising a lower layer and an upper layer overlying the lower layer, wherein the lower layer has an average thickness of 5-500 nm and has a composition represented by the formula WxTi1-x-y-z-sAyCzNs (A is at least one element selected from the group consisting of Cr, Ta, Nb, and V, the average of x, xavg, satisfies 0.05≤xavg≤0.30, the average of y, yavg, satisfies 0.00≤yavg≤0.05, the average of z, zavg, satisfies 0.00≤zavg≤0.10, the average of s, savg, satisfies 0.05≤savg≤0.30, and xavg≥2×zavg is satisfied) and the upper layer has an average thickness of 0.3-6.0 μm and has a composition represented by the formula AldM11-dN (M1 is at least one element selected from the group consisting of Ti, Cr, Ta, B, Si, Mo, and W, and the average of d, davg, satisfies 0.20≤davg≤0.80).

A coated tool according to the present disclosure comprises a substrate, a first coating layer, a second coating layer, and a third coating layer. The first coating layer contains Al, Ti, Cr, and N. The second coating layer includes a first film and a second film. The first film contains Al, Ti, Cr, and N and has a Ti / Al ratio higher than that of the first coating layer. The second film contains Al, Ti, Cr, and N and has a Cr / Al ratio higher than that of the first coating layer. The third coating layer includes a third film and a fourth film. The third film contains Al, Ti, Cr, and N and has a Ti / Al ratio higher than that of the first film. The fourth film contains Al, Ti, Cr, and N and has a Cr / Al ratio higher than that of the second film.

A hole saw is provided that includes a mandrel, a body, and a plurality of blade assemblies slidably mounted on the body. The hole saw has an adjustable size such that a user can vary the pitch of the blade assemblies to adjust the size (e.g., diameter) of the hole cut by the hole saw. In some embodiment, the body includes a plurality of pairs of wings, and each blade assembly is slidably mounted on a pair of wings of the plurality of pairs of wings. When a first blade assembly of the plurality of blade assemblies moves along its respective pair of wings, a first wing of each of the plurality of pairs of wings rotates and the other blade assemblies move along its respective pair of wings.

The invention belongs to the technical field of drill bits, particularly relates to a special drill bit for a honeycomb aluminum plate, and aims to solve the problems that when an existing drill bit is used for machining a honeycomb aluminum material, the machining precision and the surface quality are often difficult to guarantee, and meanwhile, the machining efficiency is low. The drill bit head is connected to one end of the drill bit main body; the main cutting edge is arranged on the drill bit head; the first auxiliary blade and the second auxiliary blade are both arranged on the drill bit head and used for trimming cutting edges, the outer side of the drill bit head is coated with a wear-resistant coating, and the wear-resistant coating is a composite coating composed of titanium nitride and tungsten carbide. By means of the combined design of the stepped main cutting edge, the first auxiliary edge and the second auxiliary edge and the optimized geometric parameters and wear-resistant coating technology, efficient and accurate machining of the honeycomb aluminum material is achieved, machining defects are reduced, and machining quality and efficiency are improved.

The utility model discloses a machine clamp drill bit used for machining deep and long hollow holes, which comprises a cutter handle, a cutter base body and a cutter head which are sequentially and coaxially connected from top to bottom, the cutter head is provided with a first cutter head chip groove and a second cutter head chip groove along the axial direction, and the inner wall of the lower end of the first cutter head chip groove is provided with a first mounting seat. A first peripheral cutter is embedded in the first mounting base, a second mounting base and a third mounting base are sequentially arranged on the inner wall of the lower end of the second tool bit chip removal groove from inside to outside, a center cutter is arranged in the second mounting base, and a second peripheral cutter is arranged in the third mounting base. According to the utility model, the central cutting edge and the peripheral cutting knife are arranged, so that the peripheral cutting knife participates in cutting along with the increase of the machining diameter in the reaming and drilling process. The chip removal groove is a straight groove and is grooved to the bottom of the cutter bar, so that the chip removal effect when the bottom of a deep hole is machined is guaranteed; and a guide strip for supporting is designed, the supporting and guiding effects are achieved in the drilling process, and the situation that the drilling direction is deflected due to swing and the like is prevented.