19 results about "Drill bit shank" patented technology

The polycrystalline diamond multi-point cutting drill bit for the down-the-hole hammer comprises an installation base body, a drill bit handle is coaxially arranged at the top of the installation base body, a plurality of movable grooves are symmetrically formed in the edge of the bottom of the installation base body, a blocking face is arranged at one end in each movable groove, and an installation block body is contained in each movable groove. The ends, close to the blocking faces, of the installation block bodies are rotationally connected with the movable grooves, all the installation block bodies can rotate to the exterior of the installation base body, at the moment, the installation block bodies are all arranged on the blocking faces, and a plurality of polycrystalline diamonds are arranged on the bottom faces of the installation block bodies and the installation base body. When the drill bit is used, the mounting block body extends to the outside of the mounting seat body when the drill bit is forwards tunneled, so that the tunneled diameter of the mounting seat body can be enlarged, and when the drill bit is lifted and the mounting seat body is reversely rotated, the mounting block body can automatically rotate into the movable groove, so that the diameter of the drill bit is reduced, and the drill bit can be conveniently pulled out of a hole.

The utility model relates to tool grinder technical field, is a drill bit sharpening grinder, including the body, drill positioning subassembly, grinding base, grinding axle, grinding wheel, finishing mechanism and feeding subassembly, the upper side of body rear portion is equipped with the cross slide who can make the grinding base left and right, front and back movement, the upper side of grinding base front portion is equipped with the grinding axle. The utility model is reasonable and compact in structure, the drill positioning subassembly clamps the drill handle portion and rotates a certain angle, adjusts the included angle between drill center axis and grinding wheel center, grinding wheel can grind the top angle of drill according to the demand in this way, the drill positioning subassembly makes the drill bit edge swing up and down relative to grinding wheel, grinding wheel can grind the back angle of drill according to the demand in this way, the left side of grinding axle left department is fixed and installed with at least two grinding wheels, can carry out the grinding to the drill bit edge of multiple specifications, can guarantee the grinding efficiency while guaranteeing the grinding of multiple specifications drill.

The utility model discloses a high-speed steel grinding type drill bit which comprises a drill bit body, a drill bit handle portion is integrally arranged at the tail end of the drill bit body, a flat tail is integrally arranged at the end, away from the drill bit body, of the drill bit handle portion, a rotating portion is arranged at the end, away from the drill bit handle portion, of the drill bit body, and external threads are arranged on the rotating portion. The diameter of the rotating part is smaller than that of the drill bit main body, a spiral groove is formed in the drill bit main body, the rotating part is composed of a plurality of coaxially-arranged screw-in pins, all the screw-in pins are integrally formed, and the diameter from the screw-in pin at the tail end to the screw-in pin integrally formed with the drill bit main body is gradually increased in sequence. The screw-in part is arranged at the tail end of the drill bit body, the tip end is arranged at the tail end of the screw-in part, so that a self-tapping screw is formed between the tip end and the rotating pin, a hole is easily drilled through the rotating pin with the small diameter, then the drill bit body drills along the through hole more easily, and more labor is saved when the drill bit is used for drilling.

A down-hole hammer drill tool, the drill tool comprising a percussive piston, a drive sub, a drill bit shank comprising a rearward external annular shoulder and a drill bit head, wherein the drill bit shank and the drill bit head are threadably connected.

The utility model discloses a diamond drill bit shackle structure, and relates to the technical field of trenchless construction and the like, the diamond drill bit shackle structure comprises a drill bit body and a clamping assembly, the drill bit body comprises a drill bit handle and a plurality of blades, one ends of the blades are gathered at the bottom end of the drill bit handle, and the other ends of the blades extend outwards. An upper buckling groove and a shackle groove are formed in the cutter wing, and the upper buckling groove and the shackle groove are formed in the two side walls of the cutter wing respectively; the clamping assembly comprises a shackle plate with a penetrating through hole formed in the middle, and protruding teeth which are used for entering the position between every two adjacent blades and are embedded into the upper buckling groove and the shackle groove of one blade are arranged on the inner wall of each penetrating through hole. According to the drill bit, the axial length of the drill bit is not additionally occupied while quick screwing-on and screwing-off are guaranteed, and meanwhile the screwing-on and screwing-off stability and the deformation resistance are guaranteed.

The utility model discloses a drill bit anti-breaking sleeve for drill pin processing, which relates to the technical field of drill bit anti-breaking sleeves, and comprises a drill clamping sleeve, the top end of the drill clamping sleeve is provided with a serial hole arranged along the axial direction, and the bottom end of the drill clamping sleeve is provided with a guide hole arranged along the axial direction; the stringing hole is communicated with the guide hole to form a through hole for a drill bit to penetrate through; a drill handle clamping structure for clamping a drill handle part is arranged at the top of the drill clamping sleeve; the top end of the telescopic drill protection sleeve is matched with the bottom end of the drill clamping sleeve and can telescopically penetrate into the guide hole; the telescopic drill protection sleeve is provided with a protection through hole formed in the axial direction. The telescopic control part comprises a lantern ring arranged at the bottom of the telescopic drill protection sleeve in a sleeving mode and an abutting block connected to the bottom end of the lantern ring and corresponding to the peripheral side of the protection through hole. When the bottom face of the abutting block abuts against the surface of a workpiece to be drilled, the telescopic drill protection sleeve can be driven to retract into the guide hole through counter-acting force. A chip removal opening is formed in the peripheral side of the abutting block and corresponds to the bottom end of the lantern ring. The supporting rigidity of the drill bit can be effectively improved, and the drill bit is prevented from being broken.

[00110] A drill bit including a drill bit body and a shank depending from a bottom surface of the drill bit body. The drill bit body includes an integral washer portion extending to a rear annular flange and a tapered portion adjacent to the rear annular flange. A diameter of the drill bit body extends axially and radially to a transition adjacent an outer diameter of the washer portion. The tapered portion includes an angle complementary to an angle of a counterbore at a forward end of a bore of a drill bit holder such that the matching contact angles of the tapered portion and the counterbore align the drill bit radially concentric with the bore of the drill bit holder.The drill bit includes a holder circumferentially disposed around the shank, allowing the drill bit to be securely mounted within the bore of the drill bit holder while still allowing the drill bit to rotate freely within the bore. The rear annular flange of the washer portion abuts a front surface of the drill bit holder, forming a tight coupling between the rear annular flange and the front surface of the drill bit holder, allowing minimal space between the two surfaces and reducing the migration of cutting dust and water slurry into the space between the outer diameter of the drill bit shank and the inner diameter of the holder.

The utility model relates to the field of drill bit fixing mechanisms, and discloses a drill bit fixing mechanism of a hardware drilling machine, which comprises a main sleeve, a clamping mechanism is arranged in the main sleeve, the clamping mechanism comprises a clamping piece, the inner side of the clamping piece is fixedly connected with an anti-dropping bulge, and the two sides of the outer side of the clamping piece are fixedly connected with triangular sliding blocks. The outer sides of the clamping pieces are fixedly connected with sliding rods, and the lower ends of the clamping pieces are fixedly connected with outwards-protruding stepped teeth. By means of the simple hand pulling action, the drill bit can be quickly mounted or dismounted, the drill bit replacing time is shortened, and the hardware machining efficiency is improved; the clamping piece anti-disengaging protrusion is tightly meshed with the anti-disengaging groove of the drill bit handle portion, it is guaranteed that the drill bit cannot loosen or be eccentric or move in combination with the outwards-convex stepped teeth and the inwards-concave stepped tooth sleeve mechanism, and the rejection rate is reduced. The clamping piece assembly can be flexibly matched with drill bits of various diameters and handle types of different specifications, multiple different clamp devices do not need to be purchased, and cost is saved; the structural design is compact and reasonable and is not limited by space.

The utility model discloses a deep hole drill with a replaceable handle portion, and particularly relates to the technical field of deep hole drills, the deep hole drill comprises a handle rod, a drill rod is arranged at the bottom of the handle rod, a drill bit is arranged at the bottom of the drill rod, an adjusting groove is formed in the surface of the handle rod, one end of the drill rod penetrates through the adjusting groove and extends into the adjusting groove, and an adjusting assembly is arranged at the joint of the handle rod and the drill rod; the adjusting assembly comprises positioning blocks arranged on the two sides of the drill rod, a plurality of positioning grooves are formed in the two sides of the adjusting groove, and the positioning grooves are in through connection with the adjusting groove. By arranging the adjusting assembly, pressing the baffle, generating pressure on the extrusion plate and driving the push plate to move through the extrusion rod, pushing force can be generated on the positioning block, so that the positioning block retracts into the through groove and is separated from the positioning groove, the length of the drill rod can be adjusted, and the use range of the drill rod can be widened.

The application discloses a special-shaped oil tank shell drilling die and a drilling method. The drilling die is a combined drilling die, which comprises a support, a lower die, a drill sleeve, a support, a fixed mandrel, a bolt, a first positioning mandrel, an upper die, a positioning sleeve and a second positioning mandrel. The drilling die is mainly used for drilling and tapping on the surface of the special-shaped oil tank shell, so as to meet the requirement of rapid drilling and tapping on the special-shaped curved surface. The drilling method of the application firstly assembles the special-shaped oil tank shell to the drilling die, positions the special-shaped oil tank shell by using the first and second positioning mandrels, fastens the special-shaped oil tank shell by using the bolt, selects the drill sleeve with a corresponding hole diameter, assembles the positioning sleeve on the drill bit, adjusts the height size to ensure the drilling depth, finally assembles the drill bit shank to the electric drill, and drills on the special-shaped oil tank shell. If tapping is needed, the drill sleeve is replaced according to the size of the tap shank diameter, and then tapping is performed, so as to ensure the perpendicularity requirement of the thread.

The utility model provides a cutting clamp for recycling a PCB drill bit handle material, belongs to the technical field of drill bit handle material recycling, and is used for solving the problem that the cutting length of the PCB drill bit handle material is difficult to control by an existing cutting device. Comprising a bottom plate and a feeding assembly, the feeding assembly comprises a first vertical plate and a second vertical plate, the first vertical plate and the second vertical plate are both fixed to the bottom plate, semicircular pipes are arranged on the first vertical plate and the second vertical plate, a first electric push rod is arranged above the semicircular pipes, and a push block is fixed to the end of the first electric push rod; a clamping assembly, an adjusting assembly and a cutting assembly are arranged above the bottom plate. The adjusting assembly is matched with the cutting assembly, the pushing motor drives the first threaded rod to rotate through the output shaft, the first threaded rod drives the moving block to move, the moving block drives the circular plate to move, the circular plate pushes the PCB drill bit to move, the length of the PCB drill bit in the cylinder is adjusted, and therefore the cutting length of the PCB drill bit handle material is controlled.

The utility model discloses a drill bit quenching frame, which relates to the technical field of quenching clamps and comprises a first fixing plate and a second fixing plate positioned below the first fixing plate, a plurality of elastic clamping devices are fixedly arranged at the lower end of the first fixing plate, and first fastening holes penetrating up and down are formed in the positions, corresponding to the elastic clamping devices, of the first fixing plate; the elastic clamping device comprises at least two elastic clamping pieces, the elastic clamping pieces are circumferentially distributed around the axes of the corresponding first fastening holes, the lower ends of the elastic clamping pieces jointly define a clamping hole, and the lower ends of the elastic clamping pieces make arc line contact with the outer side wall of the drill bit handle to be clamped. A plurality of second fastening holes penetrating up and down are formed in the second fixing plate, and the second fastening holes are in one-to-one correspondence with the elastic clamping devices; the lower end of each elastic clamping piece of the elastic clamping device is arranged in the second fastening hole in a penetrating mode. And the drill bit can stably keep a vertical fixed posture, the falling risk is reduced, and the safety of the quenching furnace is guaranteed.

The invention relates to the technical field of machine manufacturing, and discloses a power head hydraulic driving device based on self-adaptive adjustment, which comprises a main body assembly and a hydraulic motor, a gear box is arranged below the hydraulic motor, and a main shaft is arranged at the bottom of the gear box; the adjusting assembly is arranged in the main shaft and comprises a clamping plate, a cavity is formed in the main shaft, and the clamping plate is located in the cavity; the adjusting assembly further comprises a rotating piece, the rotating piece comprises a rotating disc located in the cavity, a connecting rod is fixed to one side of the clamping plate, a guide shaft is arranged at the end of the connecting rod, and a guide groove is formed in the rotating disc. The main shaft has the beneficial effects that when the main shaft is connected with different types of drill bits, the shape of the main shaft can be switched through the adjusting assembly, so that the main shaft can adapt to the shapes of the handle parts of the different types of drill bits, an additional adapter is not needed, the tedious degree of work is reduced, and the work efficiency is improved.

To provide a chuck assembly capable of accepting multiple standard-sized bit shanks without suffering from disadvantages of continuously variable chucks.SOLUTION: A chuck assembly for a rotary power tool includes: a body rotatable about a central axis, the body including a plurality of openings and a first set of threads; a plurality of jaws received within the plurality of openings in the body; a collar surrounding the body, the collar including a stepped portion configured to engage the plurality of jaws to limit radial movement of the plurality of jaws; a second set of threads coupled for co-rotation with the collar and engageable with the first set of threads on the body such that rotation of the collar relative to the body causes the collar to move axially along the body; and a spring biasing the collar such that the stepped portion is biased into engagement with the plurality of jaws.SELECTED DRAWING: Figure 1

This utility model discloses a special device for rock and mineral sampling and composition identification in geological research, including an impact drill and a rock and mineral drilling, grinding, sampling, screening, and collection mechanism connected to its chuck. The rock and mineral drilling, grinding, sampling, screening, and collection mechanism includes: a drill bit shank, clamped inside the impact drill's chuck; and a rotating sleeve, fixedly installed with the drill bit shank, having an opening on its left side and a tapered structure with a smaller left side and a larger right side on its inner side. This utility model, through a series of structural features, facilitates direct grinding to generate pulverized material during drilling and sampling, and allows for direct discharge of the pulverized material during drilling and sampling. The pulverized material is then collected through integrated vibration screening using the impact drill's vibration force. Personnel can directly observe the transparent sample collection box to visually determine whether a powder sample has been successfully collected, without needing to remove it for observation, thus improving ease of use. The integrated vibration screening method using the impact drill's vibration force enhances the screening effect.

The invention discloses a special precision drill bit for a plastic thin-wall part, and relates to the technical field of drill bits. The drill bit comprises a drill bit rod portion, a drill bit middle portion and a drill bit head portion, the cutting end of the drill bit head portion is provided with a composite cutting edge used for restraining burrs from being generated, and the outer circumferential face of the drill bit middle portion is provided with a large-curvature semicircular discharging opening used for discharging chippings. Through the design of the composite cutting edge, high-precision and low-burr cutting of the plastic thin-wall part is achieved, and the orifice quality and attractiveness are improved; due to the combination of the large-curvature semicircular discharging opening and the kidney-shaped hole airflow wedge groove, an efficient and active chip removal system is created, the problem that chips are accumulated and stuck is effectively solved, and machining continuity and efficiency are guaranteed; the integral strength and durability of the drill bit are ensured by integral forming and a specific material heat treatment process; the drill bit is high in overall design pertinence and particularly suitable for drilling operation of plastic thin-wall pieces difficult to machine such as PVC, ABS and PC, and the machining reliability, the yield and the production efficiency are remarkably improved.

The present invention relates to the design of a safe drill bit by forming a shear zone in the drill bit shank to prevent medical accidents during surgery and to prevent material loss during machining process; the shear zone is formed in the shank portion of the drill bit, which has a semicircular, triangular shape from the outer diameter to the circumferential direction; depending on the material, hardness, and shape of the drill bit, the fracture strength of the front end is set to approximately 70% to 90% compared to the drill bit body.

The utility model relates to the technical field of drill bit drilling machining, in particular to a taper cross drill bit machining drilling machine which comprises a base, two sets of supporting columns are fixedly arranged on the top wall of the base and distributed front and back, a fixing base is fixedly arranged on the top walls of the two sets of supporting columns, and a through hole is formed in the top wall of the fixing base. The outer wall of the fixing base is provided with a plurality of sets of sliding holes communicating with the through hole, the taper cross drill bit is placed through the through hole, the handle end of the taper cross drill bit is placed downwards, the driving assembly drives the multiple sets of clamping columns to synchronously move in the sliding holes, and therefore the vertical concave position of the head of the cross drill bit can be clamped and fixed, and the handle end of the cross drill bit can be fixed through the auxiliary assembly. The cross drill bit and the side wall can be drilled through the drilling assembly, the cross drill bit can be stably fixed through the structure, the drilling quality is more stable, and the rework condition is reduced.

The utility model belongs to the technical field of drill bits, and particularly relates to a high-strength wear-resistant drill bit which comprises a drill bit handle and a high-strength wear-resistant drill bit body, the high-strength wear-resistant drill bit body is arranged below the drill bit handle, an inserting groove is formed in the bottom end of the drill bit handle, and an inserting block fixed to the top end of the high-strength wear-resistant drill bit body is inserted into the inserting groove. A plurality of insertion holes are formed in the insertion block; the multiple first sliding grooves are formed in the drill bit handle and communicate with the inserting grooves, inserting rods are slidably connected into the first sliding grooves, one ends of the inserting rods extend into the corresponding inserting holes and are in inserting fit with the corresponding inserting holes, extrusion grooves are formed in the inserting rods, and springs fixed to the inner walls of the first sliding grooves are fixedly connected to the inserting rods; according to the high-strength wear-resistant spiral drill bit, the problem that when the high-strength wear-resistant spiral drill bit is broken or tipping occurs, a user needs to replace the whole high-strength wear-resistant spiral drill bit, and the use cost is increased is solved.