207results about "Tool adapters" patented technology

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.

The utility model relates to the technical field of drilling, and discloses a replaceable screwdriver blade of hot melting drilling equipment, which comprises a machine body, a controller is fixedly mounted on the outer wall of the machine body, a workbench is mounted on the outer wall of the machine body, a main body is fixedly mounted at the top of the machine body, a support column is fixedly mounted at the bottom of the main body, and a screw rod is mounted on the support column. A supporting plate is fixedly installed on the outer wall of the supporting column, a first motor is fixedly installed on the outer wall of the supporting plate, and a cooling fan is fixedly assembled on a power output shaft of the first motor. According to the replaceable screwdriver blade of the hot melting drilling equipment, a cutter body drives a clamping block to enter the inner wall of a supporting column through a circular groove, the clamping block slides on the inner wall of a sliding groove and abuts against the bottom of a circular plate, the cutter body drives the clamping block to push the circular plate to compress a spring, and the cutter body is rotated to drive the clamping block to rotate to the clamping groove; the elastic force of the spring is released to push the circular plate to clamp the clamping block and the clamping groove, so that the cutter body and the supporting column are stably connected, and the cutter body can be conveniently disassembled, assembled and replaced by personnel.

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 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 present application relates to the technical field of BTA tool, particularly relates to a BTA tool connector, concretely to a BTA tool connector based on dynamic pressure oil film, in order to solve the problems of the existing BTA tool connector structure being relatively complex and the precision adjustment range of the dynamic pressure oil film pressure being small, a new structure of the BTA tool connector based on dynamic pressure oil film is provided, which comprises a connector base, a plurality of adjusting assemblies, each adjusting assembly comprises a tilting pad, a torsional spring, a telescopic component, a fixed rod, the telescopic component comprises two bent plates, two connecting plates, two telescopic blocks, a compression spring, a top column, a bottom column and a piezoelectric ceramic stack, when the piezoelectric ceramic stack is elongated, the bending angle of the two bent plates is reduced but is always in a bent state, the compression spring changes from an initial state to a compressed state, the angle of the tilting pad changes, and the roundness and appearance quality of the deep hole processed by the BTA tool are better 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.

The invention provides a hand-tight drill chuck which comprises a rotating sleeve, a drill body, a nut, a clamping jaw and a gasket, the nut is in threaded connection with the clamping jaw, the rotating sleeve and the nut are connected directly or through a connecting structure and limited in the axial direction, and the drill body is provided with an inclined clamping jaw hole for the clamping jaw to slide back and forth along the clamping jaw hole. The nut is sleeved outside a cylinder of the drill body, the drill body is provided with a supporting step, and the gasket is placed on the supporting step. A circle of steel balls are directly kept through the flanged gasket with the arched bottom, the flanged gasket with the structure can provide axial jacking force and play an anti-loosening role on a nut in the drilling work of the drill chuck, and the flanged gasket can also serve as a self-locking state keeping and protecting mechanism for the self-locking drill chuck; meanwhile, a plastic retainer can be avoided, so that the service life of the drill chuck with the anti-loosening function is prolonged; furthermore, the anti-loosening device can be combined with a rotating sleeve to prevent the rotating sleeve from loosening, and the anti-loosening effect is improved.

Wind turbine bulkhead removal systems and methods are provided. The bulkhead removal system includes a bulkhead removal device and control subsystem. The bulkhead removal device includes a drilling subsystem with a drill for drilling at least one bulkhead within a wind turbine blade and an extension subsystem which is physically connected to the drilling subsystem and releasably securable to the wind turbine blade. The extension subsystem moves the drilling subsystem forwards and backwards along a length of the wind turbine blade to position the drill for drilling through each bulkhead. The control subsystem controls the operation of the drilling subsystem and the extension subsystem. The bulkhead removal system may also include a connection subsystem for connecting power and control components of the drilling and extension subsystems to a power source and to the control subsystem.

The present invention discloses a combined rotary cutting tool. The core cutting component includes a core cutting part and a core boss. The core boss is arranged on the positioning convex surface of the core cutting part. The core boss includes a core positioning surface, a core support surface, and two core side clamping surfaces located between the core positioning surface and the core support surface. Both of the two core side clamping surfaces are V-shaped. A core clamping hole penetrating through the core clamping surface and the core support surface is formed on the core boss. The peripheral cutting component includes a peripheral left cutting part, a peripheral recess, and a peripheral right cutting part arranged in sequence. The peripheral recess includes a peripheral recess support surface and two peripheral recess clamping surfaces respectively located on both sides of the peripheral recess support surface. Both of the two peripheral recess clamping surfaces are V-shaped and can be respectively matched with the two core side clamping surfaces. A peripheral clamping hole is formed on the peripheral recess support surface. During assembly, a fastener forms a threaded fit with the core clamping hole and the peripheral clamping hole to mount the core cutting component and the peripheral cutting component in a positioning groove. The present invention has the advantages of convenient loading and unloading, high positioning strength and accuracy, etc.

The utility model discloses a multi-station combined drilling machine which comprises a drilling machine base, an L-shaped rod is fixedly installed on the front side of the upper end of the drilling machine base, a machining assembly is fixedly installed on the inner wall of the L-shaped rod, a clamping mechanism is arranged at the upper end of the drilling machine base, and driving mechanisms are arranged on the two sides of the drilling machine base. The clamping mechanism is arranged, the two rows of clamps are arranged on the upper side of the bottom plate, workpieces can be clamped to the lower sides of the drill bits through the first row of clamps respectively, multiple sets of workpieces can be drilled at the same time, the workpieces can be clamped through the second row of clamps, the workpieces can be moved to the lower sides of the different drill bits in the equipment, and the drilling efficiency is improved. Compared with the prior art, a workpiece does not need to be dismantled for many times, time and labor are saved, the working intensity of workers is reduced, the drilling efficiency of the workpiece is improved, economic benefits are higher, and the drilling device meets various drilling requirements and is higher in use value and economic benefits.

An arbor for a hole saw. The arbor includes an arbor stem having at least one arm with a threaded portion configured to engage the hole saw. The arbor further includes an actuator rotatable to move the at least one arm and a body mounted to the actuator. The body has a channel that receives the at least one arm. Moreover, the arbor includes at least one magnet positioned within the at least one arm.

The invention discloses an extension bar tool for a radial drilling machine. The extension bar tool comprises a telescopic extension bar assembly. The telescopic lengthening rod assembly is of a rod-shaped structure capable of being telescopically adjusted in the axial direction, one end of the telescopic lengthening rod assembly is detachably installed on a main shaft of the radial drilling machine, and the telescopic lengthening rod assembly is used for adjusting the overall length of the tool through the axial telescopic action so as to adapt to different workpiece wall attaching distances during machining of the radial drilling machine and meet the machining range requirements under different working conditions. Through cooperation of the elastic locking rods and the multiple adjusting holes, the overall length of the tool can be flexibly adjusted so as to adapt to the wall attaching distances of different workpieces. In addition, the adapter head assembly is matched with the taper sleeves of multiple specifications through the quick-release pin rod assembly, and disassembly and assembly adaptation of drill bits and screw taps of different models can be quickly achieved; the anti-loosening assembly finally achieves the comprehensive effects of expanding the tool machining range, improving the tool adaptation universality and the disassembly and assembly efficiency, ensuring the high-speed machining stability and guaranteeing the machining hole site precision through the internal thread part and the external thread part which are screwed in the reverse directions.

The utility model discloses a multifunctional chamfering centering drilling and milling cutter for metal cutting, which relates to the field of industrial processing, and comprises a drilling and milling cutter body, the upper part of the drilling and milling cutter body is fixedly connected with a positioning box, and the opposite sides of the front part and the rear part of the inner cavity of the positioning box are respectively and fixedly connected with a hollow column; the opposite sides of inner cavities of the hollow columns are movably connected with sliding rods respectively, the surfaces of the sliding rods are sleeved with springs, the opposite sides of the springs are fixedly connected with clamping blocks respectively, inner cavities of the clamping blocks are movably connected with the sliding rods, the opposite sides of the sliding rods penetrate through an inner cavity of the positioning box respectively, and the surfaces of the clamping blocks are movably connected with connecting rings. The lower part of the connecting ring is in contact with the upper part of the positioning box, the upper part of the connecting ring is fixedly connected with a connecting block, and the front part and the rear part of the surface of the connecting block are respectively provided with a mounting groove. The drilling and milling cutter disclosed by the utility model has the following advantages that when the drilling and milling cutter body is damaged, the drilling and milling cutter body can be quickly replaced according to the requirement of a user.

The invention relates to the technical field of metal cutting machining, in particular to a metal cutting drill bit and equipment thereof.The drill bit comprises a drill bit body, and the drill bit body comprises a drill rod, a mounting seat fixedly mounted at one end of the drill rod and a hard alloy blade brazed to the other end of the drill rod; the hard alloy blades are arranged to be of an integrated three-edge type structure distributed at equal intervals, and the impact resistance of the hard alloy blades in the cutting and drilling process can be improved through the drill bit. The drilling equipment comprises a base, a drill bit part and a plate conveying part are both mounted at the top of the base, and the drill bit part comprises a drill bit feeding mechanism and a drill bit mounting mechanism mounted at the end of the feeding end of the drill bit feeding mechanism; the plate conveying part comprises an enclosure frame, a plate clamping mechanism arranged in the enclosure frame in a penetrating mode, a plate feeding mechanism installed at one end of the enclosure frame and a plate fixing mechanism installed on one side of the enclosure frame, and the drilling equipment can achieve continuous and equidistant drilling and rapidly complete disassembly and assembly of a drill bit.

The present disclosure relates to a jaw of a drill chuck, a drill chuck, and a method for assembling the jaw. The jaw includes a jaw body and a jaw cutting edge band. One side of the jaw body has a clamping inclined surface that extends obliquely with respect to the axis of the jaw body. A jaw groove is formed in the clamping inclined surface. The jaw cutting edge band can contract during cooling to enter the jaw groove and, after the cooling contraction state is restored, is in interference fit with the jaw groove, so that the jaw cutting edge band can be reliably installed in the jaw groove on the jaw body without hot working and without additional connecting parts such as welding agents, and thermal deformation of the jaw can be avoided.

The present invention discloses a quick-change hole spacing adapter, relating to the technical field of hole spacing adapters, comprising a hexagonal shaft, a quick-change sleeve, and a joint body, wherein a quick-change sleeve is attached to the front of the hexagonal shaft, the interior of the quick-change sleeve being hollow, the interior of the quick-change sleeve being provided with a joint body, wherein a joint toothing is arranged on the outside of the front end of the joint body, and wherein a quick-change lock is attached to the front end of the quick-change sleeve. For the quick-change hole spacing adapter, the joint toothing of the joint body is provided with a plum pattern that can be closely adapted to the hole spacing.In conjunction with its tight fit to the flat surface, its static spring balance is increased, facilitating the assembly and quick replacement of the joint body and hole spacing drill. Two symmetrically arranged locking pins, one facing upwards and the other downwards, improve the drill's run-out balance. The push-pull locking mechanism effectively enhances the balance of the hole spacing, resulting in more stable operation. This also increases the service life of the hole spacing drill, improves its operating accuracy, and enhances user safety.

An arbor for a hole saw an arbor stem, an actuator, and at least one post. The arbor stem includes at least one arm having a threaded portion configured to engage the hole saw. The actuator is rotatable about a central axis of the arbor to move the at least one arm. The actuator includes a surface facing the at least one arm and a track. The track is recessed from the surface of the actuator. The at least one post extends from the at least one arm to engage the track. The arm is movable in a radial direction in response to rotation of the actuator to vary a circumference of the arbor stem.

The application discloses a CVD diamond coating cutter for metal cutting, which comprises a cutting head fixedly installed at the end of a cutter part, a clamping part for fixing the cutting head, a thread connection between the outer wall of the cutting head and the inner wall of the clamping part, position adjustment of the cutter part driven by the cutting head through the thread connection, a steel supporting part fixedly installed inside the cutter part, a chip groove arranged on the outer wall of the cutter part, and a detachable additional part installed on the outer wall of the cutter part. The CVD diamond coating cutter for metal cutting is characterized in that the thread connection between the cutting head and the clamping part enables the cutting head to drive the cutter part to adjust the position, so that the cutter part is lengthened, and the steel supporting part can effectively increase the supporting strength of the cutter part. When deep hole cutting of metal materials is performed, the steel supporting part can support the cutter part, so that the cutter part is prevented from being broken when cutting deep holes.

Systems and adapters for a welding machine are provided. The system may include an adapter having a first end and a second end; a collet holder at the first end; a flange positioned between the collet holder and the second end; a first body portion positioned between the collet holder and the flange; and a second body portion positioned between the flange and the second end. The system may also include a collet receivable in the collet holder and configured to hold a tool. The adapter may be further receivable in and selectively securable to a welding head of the welding machine, thereby enabling the welding machine to use the tool.

The utility model discloses a clamping device for drill bit surface treatment, which comprises a platform and a base, a transmission cavity and a rotating cavity are arranged in the platform, an upper motor is arranged in the transmission cavity, a screw rod extending into the transmission cavity is rotatably arranged in the rotating cavity, the screw rod is connected with the upper motor through a rotating mechanism, and the upper motor is connected with the base. The screw rod is sleeved with a movable frame in a threaded mode, a movable opening is formed in the movable frame, a sliding rod is arranged in the movable opening, the sliding rod is sleeved with a connecting plate in a sliding mode through a first elastic mechanism, and positioning discs are arranged on the upper end face and the lower end face of the connecting plate. According to the drill bit clamping device, stable clamping of drill bits of different sizes is achieved, through synchronous adjustment of the positioning disc, the clamping preparation efficiency is greatly improved, one-by-one adjustment is not needed, the operation time is saved, and the overall working efficiency is improved.

The utility model discloses a self-centering high-speed steel abrasive drill which comprises a drill bit, a mounting seat, a mounting head at the top of the drill bit, a mounting opening formed in the inner side of the bottom of the mounting seat, a mounting groove formed in one side of the interior of the mounting opening, a spring arranged on the inner side of the mounting groove, a clamping block arranged at the top of the spring and a clamping groove formed in one side of the top of the mounting head. The limiting rail is used for limiting the limiting strip, so that other structures on the inner side of the mounting opening are aligned, the mounting head pushes the clamping block into the mounting groove through the inclined surface at the bottom of the clamping block, after the mounting head is mounted, the clamping block is clamped in the mounting groove, and the clamping block is clamped in the mounting groove. The clamping blocks can be bounced into the clamping grooves through the springs, so that the clamping blocks fix the clamping grooves, the mounting head is fixed, after the position of the mounting head is mounted, a fixing bolt penetrates through a fixing opening and is connected with a fixing screw opening, and therefore the mounting head is fixed, and otherwise, the mounting head is dismounted.

The invention discloses a narrow space counter bore machining device, which belongs to the technical field of machining and comprises a back scraper connected with a cutter bar. A cushion block, two thrust bearing assemblies and a large nut are sequentially sleeved on the cutter bar below the back scraper; the lower part of the cutter bar is in threaded connection with the large nut; a cam mechanism is arranged between the two thrust bearing assemblies and used for driving the distance between the two thrust bearing assemblies to be increased when the cam mechanism rotates. The outer side of the cam mechanism is connected with a driving part; and a screwing head is arranged at the lower end of the cutter bar. Large equipment such as a machine tool is not used, a manual cutting device is adopted, the outer contour of the device is reduced as much as possible, the occupied space is small, the back scraper can rotate and axially move at the same time, counter bore cutting can be carried out in a narrow space, the machining precision is guaranteed, and the machining efficiency is improved.

The utility model relates to the technical field of machining, in particular to a special machining tool for a composite center hole, which comprises a taper shank, one end of the taper shank, which is conical and used for being connected with an external lathe tailstock, is a tail end, the head end of the taper shank is provided with two mounting plates, and one ends of the mounting plates, which are far away from the taper shank, are jointly provided with a rotating shaft. An annular mounting seat is mounted on a rod body, positioned between the mounting plates, of the rotating shaft; according to the utility model, under the mutual cooperation of all parts, when a worker replaces center hole drills with different angles, the worker only needs to pull the limiting rod by hand, that is, compared with the traditional scheme, the step that the worker can replace the center hole drills after operating the tailstock is omitted, and the labor intensity of the worker is reduced. According to the scheme, when the center hole drill is used, a worker can replace the center hole drill more quickly, and meanwhile in the process, the phenomenon that the center hole drill falls off from a lathe accidentally when the worker replaces the center hole drill is avoided.

The invention relates to the technical field of control valve machining, in particular to a drilling machine for control valve machining and production and a process thereof. A drilling machine for machining and producing a control valve comprises a base, the base is an assembly carrier of the drilling machine, a supporting column is vertically and fixedly connected to the base, a machine shell is fixedly installed at the top of the supporting column, and a hydraulic cylinder is fixedly assembled at the bottom of the machine shell; the drilling machine further comprises a drilling mechanism arranged on the machine shell through a hydraulic cylinder, the drilling mechanism comprises an installation disc fixedly installed on a piston rod of the hydraulic cylinder, and a plurality of sets of installation blocks are fixedly connected to the top face of the installation disc in the circumferential direction at intervals. The first connecting rod and the second connecting rod are matched with the first universal joint and the second universal joint to form the multi-section driving shaft, the second motor is matched with the electric sliding rail, flexible adjustment of the drilling bit at various angles and positions is achieved, and the machine tool can meet the drilling requirements of complex shapes and different positions.

A torque transmission assembly for a drill bit holder includes an axial motion limiting subassembly and a rotation limiting subassembly. The axial motion limiting subassembly is configured to hold a drive body of the drill bit holder near a driven body. The rotation limiting subassembly is configured such that torque applied to the drive body is transmitted to the driven body. The rotation limiting subassembly includes a first cam body located at a distal end of the drive body and a second cam body located at a distal end of the driven body. The first and second cam bodies are configured to indirectly transmit most of the torque between the drive body and the driven body via the torque transmission assembly by limiting rotation of the first cam body relative to the second cam body.

The utility model provides a hand-tight drill chuck, and belongs to the technical field of drill chucks. The problem of how to improve the locking prompt tone of the drill chuck and prolong the service life at the same time is solved. The hand-tight drill chuck comprises a drill body with one-way ratchets, a nut, a lining and a jump spring, a plurality of limiting protrusions protruding inwards are arranged on the inner wall of the lining, limiting grooves are adjacently formed in the positions, on one sides of the limiting protrusions, of the inner wall of the lining, the jump spring is provided with outer flanges in one-to-one correspondence with the limiting grooves, and the limiting protrusions are arranged on the outer flanges. Through holes are adjacently formed in the inner wall, on the other side of the limiting protrusion, of the lining, the through holes penetrate from the inner wall of the lining to the outer wall of the lining in the radial direction, and the outer flange can slide out of the limiting groove and slide into the through holes along the limiting protrusion by rotating the lining. According to the drill chuck, through the improved design of the through hole in the lining, the structure is simple, the design is reasonable, the locking prompt tone of the drill chuck is greatly improved, and the service life of the drill chuck is greatly prolonged.

A cutting tool with a replaceable cutting head and a method for securing the replaceable cutting head are disclosed. The rotary cutting tool includes a tool shank, a replaceable cutting head mounted on the tool shank, a coupling pin, and an actuating member. In one embodiment, the coupling pin has a cylindrical portion with a reduced diameter portion defined by a pair of angled sidewalls separated by a bottom surface for cooperating with a non-threaded portion at one end of the actuating member. In another embodiment, the coupling pin has a cylindrical portion with a notch having a pair of sidewalls for cooperating with a truncated conical member at one end of the actuating member. During assembly, a pair of V-shaped contact surfaces on the cutting head engage a pair of opposing V-shaped contact surfaces on the tool shank to provide stability against momentum generated by cutting forces in two different directions and to securely hold the cutting head in place during machining operations.

The invention relates to the technical field of countersink drills, and discloses an integrated hard alloy countersink drill which comprises a cutter handle and a countersink drill body, the countersink drill body is fixedly mounted on the cutter handle and comprises a countersink drill body, a drill bit and a drill core, a mounting hole is formed in one end of the countersink drill body and used for fixedly mounting the drill bit, and a hexagonal connector is arranged at the other end of the countersink drill body; an inner hexagonal hole is formed in the cutter handle, and the hexagonal connector is fixedly matched with the inner hexagonal hole; the drill core is coaxially and fixedly connected into the drill bit; the counter bore drill main body mounted in the inner hexagonal hole can be replaced by a screwdriver bit which is coaxially and fixedly mounted; the counter bore drill body and the screwdriver bit can share the same mounting handle, the functions of the screwdriver bit and the counter bore drill are rapidly switched through the self-locking ring, the problem that a traditional counter bore drill is single in function is solved, the operation efficiency is greatly improved, the tool replacement frequency and the carrying burden are reduced, and the practicability is high. And meanwhile, the connection precision loss caused by frequent replacement of tools is reduced.

The utility model discloses a pipeline trepanning cutter capable of extracting an arc plate, and relates to the field of pipeline trepanning cutters, a mounting cavity with a lower opening is arranged in a cutter body, and a mounting sleeve communicated with the mounting cavity is arranged at the circle center of the upper side of the cutter body; a mounting column is fixed to the upper end of the center drill body and detachably fixed in the mounting sleeve, the lower end of the center drill body extends to the position below the cutter body from the mounting cavity, a drill bit body is fixed to the position below the center drill body, a plurality of receding grooves are sequentially formed in the side wall of the center drill body from top to bottom at intervals, and a cylindrical cavity is formed in the lower end of the center drill body; the cylindrical cavity is communicated with a receding groove in the lower end of the center drill body; one end of a torsional spring in the clamping spring mechanism is fixed in the cylindrical cavity, the other end of the torsional spring is connected with a rotating block, one end of a rotating rod is connected with the rotating block and penetrates into the receding groove to be connected with a limiting clamping rod, the limiting clamping rod is perpendicular to the rotating rod, and the other end of the limiting clamping rod extends to the outer side of the drill bit body. And by arranging the snap spring mechanism, falling of the arc plate can be limited, and falling is prevented.

The utility model provides a drilling mechanism of a vertical drilling machine. Comprising a workbench, a lifting assembly is arranged at the top of the workbench, an adjusting assembly is arranged on the surface of the lifting assembly, and a mounting assembly is arranged on the surface of the adjusting assembly. According to the drilling mechanism of the vertical drilling machine, all parts of the drilling mechanism are arranged in a matched mode, a connecting block is moved towards the inner side, so that a sliding sleeve slides on the surface of a sliding rod, the sliding sleeve drives a positioning rod to be separated from the inner side of a positioning hole, a lower connecting block is manually rotated, a drill bit is taken out, and a new drill bit is replaced; therefore, the process of mounting and dismounting the drill bit of the device is simple and convenient, workers can conveniently maintain and replace the drill bit, the mounting completion stability is good, the device can conveniently drill and dot the side edge plane of the special-shaped workpiece in cooperation with the effect of the adjusting assembly, use is more flexible, the application range is wide, and the practicability and functionality of the device are improved.