2426results 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 numerical control drilling machine tools, and discloses a numerical control drilling machine tool. When the numerical control machine tool controls the connecting shaft to move downwards, airflow sprayed out of the air guide hole preferentially sprays sweeps in a drill hole upwards, the cutting cutter head can continuously cut up long sweeps generated in the drill hole when the drill bit drills, on one hand, the long sweeps can be conveniently sprayed out through the airflow, on the other hand, winding of the sweeps is avoided, and the cutting efficiency is improved. And finally, the numerical control machine tool controls the connecting shaft to move upwards, at the moment, the chip removal block pops up to further discharge the waste chips remaining in the drill hole, finally, the effects of cutting the long waste chips to avoid winding and rapidly discharging the chopped waste chips are achieved, and the problem that when the drill hole is too deep and the waste chips are too long, the waste chips cannot be cut is solved. And long sweeps at the bottom of a drilled hole cannot be quickly discharged through short-distance up-down reciprocating motion, and the risk that the sweeps are wound still exists.

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.

The utility model discloses a drill bit convenient for self chip removal, belongs to the technical field of drill bits, and aims to solve the problems that in the prior art, chips in a drill hole are discharged to a table top of a drill hole area through a chip removal groove of the drill bit, so that the chips need to be cleaned away manually subsequently, and residual chips are easy to fall back into a hole groove which is just formed. A drilling part is arranged at the lower end of the drill bit body, a lifting guide mechanism is arranged on the surface of the drill bit body, and the lifting guide mechanism comprises a fixed lifting plate, a waste chip collecting barrel, a rotated support and a lifting guide rod; through the arranged lifting guide mechanism, when the drill bit body continuously moves downwards and performs drilling, the fixed lifting plate descends along the lifting guide rod and plays a role in guiding the screw-in direction of the drill bit body, so that the defect that the drill bit body deviates under the operation of a handheld electric drill is overcome; therefore, the stability and the drilling quality of the long hole forming work of the drill bit body are guaranteed.

A two-hole core drilling machine of the invention includes a body, a vertically reciprocating carriage vertically reciprocably mounted to the body, a fixing plate coupled to one side surface of the carriage, to rotatably support a drive shaft of a motor, a pivoting plate fastened to the fixing plate under a condition that a pivot angle of the pivoting plate is changed, a moving plate fastened to the pivoting plate under a condition that a length of the moving plate from the pivoting plate is varied, a belt or chain mounted between a drive pulley coupled to the drive shaft and a driven pulley coupled to a driven shaft rotatably mounted to the moving plate, a first core bit coupled to the drive shaft, and a second core bit coupled to the driven shaft.

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.

A cylindrical sleeve device can be attached or secured to a surgical drill. The sleeve can include a drill coupler, an intermediary section, and a sleeve body. The sleeve can include multiple internal channels. The internal channels can include drill channel, which can be circular and located at the center of the sleeve. The drill channel can be configured to receive a surgical drill. The internal channels can include a suction channel and / or a cooling channel. The suction channel and / or cooling channel can be concentrically positioned relative the drill channel.

The invention relates to the technical field of machining, and particularly discloses a combined cutter which comprises a cutter handle, a center drill and end face milling cutters, the center drill is installed in the center of the cutter handle, and the end face milling cutters are distributed around the center drill and installed in a receding groove. The calibration device comprises a mounting base and a measuring mechanism, the measuring mechanism is provided with a clamping assembly, a positioning assembly and a calibration assembly, the combined tool is positioned and clamped, and calibration is carried out through a center hole standard block, a height conversion plate, a guide mechanism and a calibrator. Meanwhile, an end face calibration cushion block is further arranged and used for determining a scraping and milling plane of the combined cutter. The calibration method comprises the steps that the combined tool is placed in the positioning block and pressed tightly, the center drill makes contact with the center hole standard block to drive the height conversion plate to slide, the calibration instrument is used for measuring the moving distance and adjusting the installation position of the center drill, and the center drill is fixed to complete calibration. The combined tool and the calibration device and method have the advantages of being simple in structure, accurate in calibration, convenient to operate and the like, and are suitable for calibration of combined tools of various models.

The utility model discloses a combined type double-end drilling tool which comprises a first drill tip and a second drill tip which are oppositely arranged, a first connecting block is arranged at the bottom of the first drill tip, a second connecting block is arranged at the bottom of the second drill tip, a first thread is arranged on the outer side of the first connecting block, and a second thread is arranged on the outer side of the second connecting block. And internal thread connecting pipes are arranged on the outer sides of the first connecting block and the second connecting block. According to the first drill tip and the second drill tip which can be separated, the adaptability of the tool is improved, and a user is allowed to rapidly replace the drill tips according to different operation requirements. And meanwhile, the first connecting block and the second connecting block are connected and fixed through the internal thread connecting pipe, so that the connecting stability is ensured, and the loosening or falling risk in the working process is reduced. The design of the sliding rail and the sliding block ensures that the first drill tip and the second drill tip can be aligned in position when being combined, so that the first drill tip and the second drill tip can be easily connected through the internal thread connecting pipe.

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.

Rotary cutting tools are disclosed comprising shanks and replaceable cutting inserts are provided. A head of the cutting insert includes insert centering surfaces that contact the pocket centering walls of the shank, and insert drive surfaces that contact the torque transmitting pocket drive walls of the shank. The configurations and sizes of the shank and cutting insert features are controlled to provide improved torque transmission, rigidity and stability during operation of the rotary cutting tools.

A hole saw includes a cylindrical body having a sidewall with a first end and a second end opposite the first end. The cylindrical body includes a gullet formed in the sidewall between a leading surface, a trailing surface, and a bottom surface of the sidewall. The gullet defines a central longitudinal axis extending between the first and second ends of the sidewall that is obliquely oriented relative to a rotational axis of the hole saw such that the gullet is angled from the first end to the bottom surface in a direction toward a cutting direction of the hole saw. The gullet has a dimension measured parallel to the rotational axis between the first end of the sidewall and the bottom surface of the gullet that is greater than 1.5 inches. The hole saw includes a cutting tooth coupled to the first end of the sidewall adjacent the gullet.

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 invention discloses a diamond micro drill and a coating growing method.The diamond micro drill comprises a connecting block and a mounting body, one end of the connecting block is connected with a micro drill bit, the other end of the connecting block is connected with a clamping ring, one end of the mounting body is connected to the interior of the clamping ring, and limiting pieces are arranged on the clamping ring and distributed on the clamping ring in an annular array shape; and the mounting body is in threaded connection with the interior of the clamping ring. According to the diamond micro drill and the coating growth method, the whole device is of a split structure, and when the drill bit part, namely the micro drill bit, is damaged and cannot be normally used or the mounting part, namely the mounting body, is damaged and cannot be normally used for mounting and fixing, a worker can dismount three groups of limiting pieces in different ranges by using an external tool; and then the connecting block and the mounting body on one side of the micro drill bit are reversely rotated, so that one end of the mounting body can be screwed out of the clamping ring, the damaged part can be replaced in a targeted manner, and the maintenance cost is reduced.

The invention relates to the technical field of deep hole machining, in particular to a drilling device for a deep blind hole of an undercarriage piston rod, which comprises a drill rod, a drill bit is arranged at one end of the drill rod, the drill rod is hollow, a liquid inlet and a liquid outlet are formed in one end of the drill rod, a liquid conveying assembly is arranged on the drill rod, and cutting liquid is conveyed from the liquid inlet by the liquid conveying assembly. Meanwhile, a liquid suction assembly is arranged, the used cutting liquid is pumped out through the liquid suction assembly, and a heat insulation barrel and a heat insulation bag are arranged in the drill rod, so that heat exchange is not generated between the cutting liquid conveyed by a liquid conveying assembly and the used cutting liquid; therefore, the influence of the used cutting fluid on the conveyed cutting fluid is reduced, the influence on the cooling effect of the drill bit is further reduced, meanwhile, the liquid conveying assembly and the liquid pumping assembly are arranged to form a pumping and sucking structure, the influence on the air pressure in the deep hole is avoided, and the deep hole machining quality is improved.

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.

A drill body of an indexable insert drill includes at least two chip flutes separated from each other in the circumferential direction of the drill body by intermediate ribs, each chip flute and each rib extending in a helically curved path. An insert seat is located at a transition between each chip flute and a front face of the drill body. Coolant ducts are arranged in and extending along a respective one of the ribs. Each coolant duct extends in a helically curved path and has an upstream end with an inlet opening and a downstream end with an outlet opening. Each coolant duct has a cross-sectional area that varies in the axial direction of the coolant duct, such that it has a smaller cross-sectional area at its outlet opening than at its inlet opening.

A machining drill bit comprises a handle body, a cutting body and a blade body which are sequentially connected, the end, away from the cutting body, of the blade body is provided with two conical faces and two chip containing grooves, the two conical faces and the two chip containing grooves are sequentially and alternately arranged in the circumferential direction of the blade body, and cutting edge parts are formed between the groove walls of the chip containing grooves and the corresponding conical faces. The cutting body is provided with two chip grooves and two liquid inlet grooves, the two chip grooves and the two liquid inlet grooves are sequentially and alternately formed in the circumferential direction of the cutting body, each chip groove and each liquid inlet groove are spirally formed in the direction from the blade body to the handle body, and a cutting blade is formed in the position, between each liquid inlet groove and the corresponding chip groove, of the cutting body. The end, away from the handle body, of each chip discharging groove extends to the corresponding chip containing groove, and the end, away from the handle body, of each liquid inlet groove extends to the conical face. The machining device comprises the machining drill bit. The machining drill bit and the machining device can effectively reduce the cutting heat, improve the cutting efficiency and prolong the service life.

The invention relates to the technical field of agricultural irrigation equipment processing, in particular to an on-pipe button water dropper automatic rapid inlaying machine. The device comprises a pipe fitting conveying device used for continuously conveying pipe fittings for machining, an inlaying machining device installed on a conveying path of the pipe fitting conveying device and used for inlaying drippers on the pipe fittings, and the inlaying machining device comprises a punching assembly and an inlaying assembly. The punching assembly and the inlaying assembly are used for conducting circulating following punching and water dropper inlaying on a pipe fitting correspondingly, and the water dropper feeding device is used for selecting the direction of the water droppers and conveying the water droppers to the inlaying machining device so that the inlaying machining device can conduct inlaying machining. By means of the design of the pipe conveying device, the pipes can be continuously conveyed for machining, the production efficiency is improved, the inlaying machining device conducts circulating following punching and inlaying operation on the pipes, the punching assembly and the inlaying assembly conduct punching and dripper inlaying on the pipes correspondingly, and it is guaranteed that the inlaying positions of drippers are accurate through cooperation of the punching assembly and the inlaying assembly.

The invention discloses an automobile windshield wiper motor shell machining drilling machine facilitating chip removal, and relates to the technical field of drilling machines. A support is fixedly connected to the top of the bottom plate, a mounting plate is fixedly connected to the outer side face of a barrel, the side, away from the barrel, of the mounting plate is slidably connected with the inner side face of the support, a trepanning drill bit is arranged in the barrel, a driving assembly is fixedly connected to the side, away from the bottom plate, of the barrel, and the output end of the driving assembly extends into the barrel. The output end of the driving assembly is fixedly connected with the end, away from the bottom plate, of the trepanning drill bit, the chip removal assembly is fixedly connected with the side, close to the bottom plate, of the barrel, the trepanning drill bit rotates and feeds, trepanning is conducted at the contact position of the bottom plate and the chip removal assembly, the chip removal assembly magnetically attracts cuttings, the cuttings are prevented from splashing all around, and orderly discharging of the cuttings is facilitated.

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.