144results about "Tool adapters" patented technology

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.

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 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 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.

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 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.

The utility model discloses an anti-vibration stepped drill bit for deep hole processing, which comprises a stepped drill bit, a drill rod, a flow guide pipe and a clamping mechanism, the drill rod is coaxially fixed at one end of the stepped drill bit, and the flow guide pipe is coaxially fixed at one end of the drill rod far away from the stepped drill bit. The clamping mechanism has the advantages that the single air cylinder is adopted to drive the linkage rod to be in linkage, the linkage rod drives the driven rod protruding blocks to be in synchronous linkage, then the first clamping plate and the second clamping plate can be in synchronous linkage, an independent driving unit does not need to be additionally arranged, the complexity of the clamping mechanism is simplified, and the clamping efficiency is improved. The drill rod and the flow guide pipe are rigidly clamped and locked through the first clamping plate and the second clamping plate correspondingly, a vibration transmission path is effectively blocked, the situation that the stepped drill bit vibrates during machining is avoided, the stress distribution of the drill rod and the flow guide pipe can be balanced through a synchronous clamping mechanism, and the service life of the drill rod and the flow guide pipe is prolonged. And local stress concentration caused by traditional single-point fixation is avoided.

The present invention relates to a drill accessory for fitting to a drill, screwdriver or impact driver. The drill accessory allows for two or more bits or tools to be mounted on the drill accessory. The drill accessory allows for the two tools to be swivelled into position and alignment with the drill chuck for quick and convenient changing between tools. The drill accessory includes a connecting arrangement for connecting the drill accessory to the drill. The drill accessory further includes a plurality of tool holders and a rotating holder mechanism. The drill accessory further includes a moving mechanism that facilitates the coupling and decoupling of the tools to the drill chuck.

The invention discloses a lead angle integrally-formed steel plate drill which comprises a connecting handle, a chip groove is formed in the outer wall of a spiral drill rod, and a cutting edge is reserved at the position, located on the edge of the chip groove, of the spiral drill rod. The chamfering device has the beneficial effects that the special chamfering seat is additionally arranged between the connecting handle and the spiral drill rod, and the two 120-degree chamfering blades are arranged on the chamfering seat in the direction of the cutting blade of the spiral drill rod, so that when the spiral drill rod is about to completely penetrate through a steel plate, the upper edge of a hole opening is cut in advance, and a required chamfer is directly machined; and meanwhile, when the spiral drill rod retreats from the steel plate, the chamfering blades on the chamfering base can make contact with burrs on the lower edge of a hole opening, due to the fact that the retreating direction is opposite to the drilling direction, the cutting edges can generate upward cutting force on the burrs on the lower edge, and therefore the burrs are cut off and brought out of the hole, and the chamfering effect is achieved. The most headache problem of burrs on the outlet side in the traditional process is solved.

Provided is a cutting tool excellent in chip dischargeability and excellent in durability. A cutting tool based on one aspect of the present disclosure comprises a body section and a first cutting part and a second cutting part fixed to the body section. The body section includes a trunk part positioned on a rear end side, and a branch part extending toward a tip end from the trunk part. The branch part includes: a first branch part extending rearward in a rotation direction toward the tip end and connected to the trunk part and the first cutting part; a second branch part extending frontward in the rotation direction toward the tip end and connected to the trunk part and the first cutting part; a third branch part extending rearward in the rotation direction toward the tip end and connected to the trunk part and the second cutting part; and a fourth branch part extending frontward in the rotation direction toward the tip end and connected to the trunk part and the second cutting part. The second branch part and the third branch part intersect and are connected at the intersecting sites.

An element, specifically a rotating element, including an inductance moving or rotating together with the rotating element, configured to provide electrical energy in a magnetic field when in motion, and a consumer moving or rotating together with the rotating element, operable by the provided electrical energy.

The utility model provides a tire pressure sensor belongs to the punching auxiliary technical field, it solved the technical problem of the wheel hub after punching and the convenient polishing. The punching auxiliary equipment of tire pressure sensor includes the workstation, and the inside top of L type mounting bracket is equipped with the quick release mechanism that carries out the quick replacement to drill bit, and the quick release mechanism includes the second rotating lever, and the bottom all around of second rotating lever is installed with the elastic thread piece, and the bottom of second rotating lever outer wall is equipped with the first thread groove that with the outside thread of elastic thread piece is in communication, the outer wall of elastic thread piece is equipped with the fixed sleeve of adaptation, and the inner wall top and bottom of fixed sleeve are equipped with the communication trapezoidal thread groove, and the top of drill bit is located in the inside of multiple elastic thread pieces. In the utility model, the effect that carries out the quick replacement to drill bit is realized, and the hole burr of wheel hub is polished and is edged conveniently, saves the time of replacing drill bit, and the efficiency of wheel hub punching is improved.

The utility model belongs to the technical field of coating drill bits, particularly relates to a drill bit capable of adjusting drilling depth, and aims to solve the problem that the existing drill bit cannot be adjusted, and adopts the following scheme that the drill bit comprises a connecting end, a clamping groove is formed in the top end of the connecting end, a sleeve is fixedly mounted at the bottom end of the connecting end, and the bottom end of the sleeve penetrates out of a drill bit body; according to the telescopic drill bit, the drill rod drives the drill bit body to be connected in the sleeve in a sliding mode through a telescopic structure composed of the fixing block and the sleeving block, the drill bit body stably slides along the limiting groove through the limiting block, the limiting effect is achieved, and the drill bit body is prevented from loosening during drilling operation; the first abutting ring, the connecting plate and the second abutting ring can abut against the limiting block and drive the limiting block to slide when rotating along the sleeve to adjust the position, so that the drill rod is driven to adjust the position of the drill bit body, adjustment can be conducted according to the needed drilling depth, and the comprehensiveness and applicability in the using process are improved.

The utility model discloses a hard alloy drill bit, which relates to the technical field of alloy drill bits and comprises an alloy cutter handle component, a locking component and an alloy drill bit component, the alloy cutter handle component comprises a cutter handle head and a clamping groove, the clamping groove is arranged outside the cutter handle head, the locking component is mounted at the bottom of the alloy cutter handle component in a threaded manner, and the alloy drill bit component is mounted in the clamping groove. The locking assembly comprises a threaded ring and a threaded assembling and disassembling groove, the alloy drill bit assembly is fixedly installed in the alloy cutter handle assembly, and the alloy drill bit assembly comprises a drill bit cutter body and a drill bit installation groove. Under the combined action of the threaded ring, the drill bit clamping block, the force bearing block and the drill bit mounting groove, the drill bit and the cutter handle are divided into two parts, when the hard alloy drill bit is assembled, the threaded ring and the drill bit clamping block are tightened through the threaded assembling and disassembling groove, the drill bit clamping block clamps the cutter handle head, and therefore the drill bit is assembled. The cutter handle can be reserved when the drill bit is damaged, and cutter handle materials are saved.

The utility model provides an auxiliary laser centering device for an elastic guide sleeve of a drilling machine. Comprising a laser transmitter, a guide sleeve, a sealing cover, a bolt, an elastic plunger, a pull rope and a blade, the guide sleeve comprises a laser mounting part and a drill bit clamping part; a laser mounting part is arranged at one end of the guide sleeve and is used for assembling a laser transmitter; a drill bit clamping part is arranged at the other end of the guide sleeve and used for centering, locking and fixing a drill bit, and the center of the laser mounting part and the center of the drill bit clamping part are collinear; the elastic columns are circumferentially arrayed in an inner cavity of the drill bit clamping part, clamping force is applied to the drill bit in the radial direction, and the clamping center of the elastic plunger coincides with the center of the drill bit clamping part; the blade is arranged at the bottom of the elastic plunger; the pull rope is connected with the tail part of the blade; the sealing cover is concentric with the guide sleeve and is arranged at the end part of the drill bit clamping part; and the screw rod is used for detachably assembling the sealing cover on the guide sleeve. The drill bit is clamped by the elastic plunger and the blade, the guide sleeve, the laser transmitter and the drill bit are concentric, and the center point and the center line of the drilling machine are marked through the marking pen for laser indication.

The utility model relates to the technical field of drilling machines, in particular to a drill bit capable of being quickly disassembled and assembled for a six-shaft drilling machine, which mainly comprises a fixed mounting seat, a power end is arranged at the top end of the fixed mounting seat, an insertion mounting cylinder is connected to the right end of the inner side of the power end, and a drill bit body is arranged on the right side of the insertion mounting cylinder. And the quick mounting and dismounting assembly is arranged on the inner side of the inserting mounting cylinder and comprises an inserting column, and a positioning column is arranged at the top end of the inserting column. According to the drill bit for the six-axis drilling machine capable of being rapidly disassembled and assembled, an inserting column is inserted into the inner side of an inserting mounting cylinder, a clamping strip and the bottom of a clamping groove are clamped and pre-positioned, a positioning column at the top end penetrates through a positioning hole to be inserted into the inserting column for positioning, at the moment, the protruding end of a pressing block at the top end rotates to the bottom end, a movable sliding plate is extruded, and the drill bit is rapidly disassembled and assembled; and the position of the positioning column is extruded and fixed, locking can be relieved through reverse rotation of the pressing block, the purpose of rapid mounting and dismounting is achieved, and the use efficiency of the equipment is improved.

The utility model discloses a micro drill bit for machining a 3C titanium alloy element. The micro drill bit comprises an installation body, a rotary button rotationally installed above the installation body and a connecting assembly in the rotary button. And a connecting disc is rotationally connected to the upper portion of the rotating button, a mounting base is fixedly mounted on the upper portion of the connecting disc, a fixing structure is arranged in the mounting base, and a micro drill bit is inserted into the middle of the fixing structure. Threaded connection of the drill tip is achieved through the threaded rod of the connecting assembly, and detachable installation of the drill tip and the length adjusting effect in the using process are achieved through threaded connection of the drill tip and the threaded rod of the connecting assembly.

The present disclosure provides a cutting insert having excellent chip discharge properties. A cutting tool according to one aspect of the present disclosure has a main body part and a first cutting part fixed to the main body part. The main body portion has a trunk portion located on the rear end side and a branch portion extending from the trunk portion toward the front end. The first cutting portion has a first rear surface located rearward of the rotation direction of the rotation shaft and a first inner side surface facing the rotation shaft. The branch portion has a first branch portion connected to the trunk portion and the first rear surface, and a second branch portion connected to the trunk portion and the first inner surface.

The utility model belongs to the technical field of machining tools, in particular to a drill bit with a cutting tool bit easy to replace quickly, which comprises a drill body, a clamping rod and a square connecting block, an adapter block is fixed at the bottom end of the clamping rod, and the square connecting block is fixed at the top end of the drill body. Clamping blocks are fixed on the opposite surfaces of the two movable plates; the bidirectional threaded screw rod is rotationally mounted in the square connecting cavity; a guide rod; according to the drill body, the square connecting block is inserted into the square connecting cavity, the two-way threaded lead screw is rotated, the two movable plates are close to the inner side to clamp the square connecting block, meanwhile, the clamping block is embedded into the clamping groove to form clamping locking, stable connection of the drill body main body and the clamping rod can be achieved, and the drill body main body and the clamping rod can be disassembled by reversely rotating the two-way threaded lead screw; the square design of the square connecting block and the square connecting cavity has high stability, and relative rotation between the drill body main body and the clamping rod is avoided.