116 results about "Twist drill" patented technology

The invention discloses a high-speed numerical control gantry vertical and horizontal drilling and milling composite machine tool, which relates to the technical field of machine tools, and comprises a horizontal machine tool, a vertical machine tool arranged in the middle of the horizontal machine tool, a connecting end arranged at the output end of the vertical machine tool, and a twist drill movably clamped at the bottom of the connecting end, the twist drill further comprises a first oil cavity arranged outside the twist drill in a sleeving mode. By means of the drilling and milling combined machine tool, the problem that when an existing high-speed numerical control gantry vertical and horizontal drilling and milling combined machine tool drills a tubular workpiece or a workpiece with a cavity, most chippings can enter the cavity in the workpiece due to the structural characteristics of a spiral groove after a drill bit drills through is solved. The chippings are distributed dispersedly, easily clamped in complex and narrow corner gaps of a cavity and difficult to clean, special tools such as a long and thin brush and a high-pressure air gun are needed, a large amount of manpower and time are consumed, and the production efficiency is reduced. And in addition, scraps accumulated in the cavity may scratch and abrade the inner surface of the workpiece, the machining quality and precision are affected, and the performance of the workpiece is damaged due to oxidation and corrosion if the scraps are left for a long time.

The invention relates to the technical field of mold machining, in particular to a numerical control drilling machine for mold assembly machining. Comprising a base and a supporting seat installed on the base. A drilling mechanism is arranged on the supporting seat; the double twist drills are driven by the driving part to achieve synchronous back-to-back drilling in a rigid frame formed by the fixed seat and the sliding seat, the efficiency bottleneck of single-spindle sequential operation is broken through in a parallel machining mode, and machining vibration is effectively restrained by forming a force closed loop through generated reverse cutting force; meanwhile, the chip removing part is used for removing chips through extrusion supporting and moving of the push rod in the U-shaped chip groove of the twist drill, directional spraying of the spraying pipe is matched, automatic removing, cooling and lubricating of the chips are achieved, and therefore the technical problems of low efficiency, vibration deflection and chip winding existing in circular mold drilling are solved cooperatively on the whole.

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

The invention relates to the technical field of twist drill machining, and discloses a clamping device for twist drill machining, which comprises a three-jaw chuck body, a mounting base is mounted at the bottom of the three-jaw chuck body, and a bolt is mounted on the outer surface of the three-jaw chuck body. According to the clamping device for twist drill machining, through the arranged stabilizing assembly, when the three-jaw chuck body is installed, a cylinder is placed into the installation groove, the clamping plate is guided by the inclined face to retract into the first cavity, meanwhile, the abutting rod is pushed, the clamping plate is clamped, and the clamping plate is released from the first cavity; at the moment, an abutting rod drives a circular ring and a cylinder to rotate forwards through contact with a movable hole, at the moment, an arc-shaped groove extrudes a circular rod, pushes a sliding block to move upwards and compresses a first spring, when a clamping plate is aligned with a limiting groove, the first spring rebounds, all parts are driven to reset, the clamping plate is clamped into the limiting groove, pre-fixing is completed, and positioning and deviation prevention are provided for subsequent bolt fastening.

The utility model relates to an edge grinding auxiliary device for a twist drill. Comprising a grinding machine, a protective cover is arranged outside a grinding wheel of the grinding machine, an edge grinding device mounting unit is arranged on the protective cover, and an edge grinding unit matched with the grinding wheel is arranged at the top of the edge grinding device mounting unit; the cutter sharpening unit at least comprises a quick-change support, a self-aligning nut is arranged at the top of the quick-change support, a rotary stud is arranged in the self-aligning nut in a penetrating manner, a twist drill bushing is arranged on the end face of the outer side of the rotary stud, and the included angle between the rotary stud and the twist drill bushing is 90 degrees; an included angle between the center line of the aligning nut and the quick-change support is 31 degrees; the inner diameter of the twist drill sleeve is 0.1 mm larger than the outer diameter of the twist drill. And the up-and-down swinging rotation angle of the twist drill bushing is 20-30 degrees. The twist drill cutter sharpening device has the advantages of being simple in structure, reasonable in design and capable of reducing operation difficulty and improving working efficiency while guaranteeing the twist drill cutter sharpening progress.

The invention relates to the field of axle combination machining, in particular to a special machine tool for machining three screw holes in the end face of an axle. A clamp is arranged at the end of the machine table, a shell is horizontally and adjustably arranged at the upper end of the machine table, a coaxial reversing device is arranged in the middle of the shell, and two output ends of the coaxial reversing device are coaxially arranged, opposite in rotating direction and fixedly connected with a main disc and an auxiliary disc respectively; the main disc is in coaxial key connection with the base disc, three disc seats are arranged on the base disc along the circumference in an equal-angle array mode, each disc seat is fixedly connected with a driving device, and the output end of each driving device is fixedly connected with a twist drill; the auxiliary disc is coaxially and fixedly connected with a bearing disc, three rotating cylinders are arranged on the bearing disc in a rotating mode along the circumference in an equal-angle array mode, and each rotating cylinder is symmetrically provided with two driving devices which are fixedly connected with a boring cutter and a screw tap respectively. According to the machine tool, the three procedures of drilling, chambering and tapping are integrated through cooperation of all the parts, uninterrupted continuous machining is achieved, frequent transferring and repeated clamping are not needed, the defects that existing equipment is low in machining efficiency and insufficient in positioning precision are effectively overcome, the machining quality is guaranteed, and the large-scale production requirement of axles is met.

The utility model belongs to the field of twist drill production equipment, and particularly relates to an automatic twist drill material feeding device which comprises a feeding bin, a plurality of feeding mechanisms are arranged on the inner side of the feeding bin, and bars are placed on the feeding mechanisms. A conveying platform is fixedly installed on one side of the feeding bin, a conveying groove is formed in the top of the conveying platform, a conveying mechanism is arranged on the inner side of the conveying groove, a feeding air cylinder is fixedly installed on the inner wall of the bottom of the feeding bin, and a pushing air cylinder is fixedly installed on the top of the feeding bin. According to the automatic bar feeding device, bars can be clamped and matched with the ball screw, the bars can be stably and accurately conveyed to the designated position, deviation does not exist easily, the production precision is greatly improved, automatic feeding of the bars can be achieved through the arranged feeding mechanism, and therefore the production efficiency is improved.

The invention relates to the technical field of drill bits, in particular to an auger bit with a cutter handle lengthening structure, which comprises a drilling machine, a mounting head is rotatably connected to the drilling machine, a lengthening cutter handle is mounted on the mounting head, a fixing ring is sleeved on the drilling machine, fixing rods are fixedly connected to two sides of the fixing ring, and the cutter handle lengthening structure is mounted on the fixing rod. According to the device, a to-be-drilled area is pre-blown and cleaned through the air blowing piece, the multi-section telescopic rod and the spray head, the drilling centering precision of the twist drill is guaranteed, the blowing state of the spray head can be automatically switched along with drilling operation, chippings generated during drilling are laterally blown away, the drilling efficiency is improved, and the drilling efficiency is improved. And meanwhile, through linkage of a rack, a gear and other mechanisms, a large hole replaces a small hole to be communicated with the channel, self-adaptive adjustment of air outlet intensity increase during drilling deepening is achieved, the cutter burning and chip blocking faults caused by chip accumulation are effectively avoided, and the requirements for reinforced chip removal and cooling under the deep hole working condition are met.

The utility model discloses a uniform titanizing device for a hexagonal handle twist drill, which comprises a base, the top of the base is fixedly connected with a stabilizing plate, the outer side of the stabilizing plate is fixedly connected with a controller, the outer side of the stabilizing plate is provided with a titanizing mechanism, the titanizing mechanism comprises a motor, the output end of the motor is fixedly connected with a rotating shaft, and the rotating shaft is fixedly connected with the controller. The outer side of the rotating shaft is fixedly connected with a clamping plate, a workpiece body is installed in the clamping plate, the outer side of the stabilizing plate is fixedly connected with a top plate, the top of the top plate is fixedly connected with an electric telescopic rod, and the outer side of the electric telescopic rod is fixedly connected with a pushing rod. And a moving block drives a sliding rod to move in a moving groove through a pushing rod, so that the sliding rod drives a spraying plate to move back and forth above a workpiece body, the workpiece body rotates at the top of the base, and the effect of uniform titanizing is achieved.

The utility model provides intelligent processing equipment for a twist drill. The intelligent processing equipment comprises a controller, a rack, a translation mechanism, a torsion mechanism and a clamping mechanism, the controller is installed in the rack, the translation mechanism and the clamping mechanism are both fixed to the rack, and the torsion mechanism is connected to the driving end of the translation mechanism; the clamping mechanism is used for clamping one end of a twist drill blank, the translation mechanism is used for driving the twisting mechanism to be close to or far away from the clamping mechanism, and the driving end of the twisting mechanism is used for being in matched insertion connection with the other end of the twist drill blank and twisting the twist drill blank so that a guide part of a twist drill can be formed on the twist drill blank; according to the twist drill blank twisting device, twist drill blanks can be twisted in a mechanical mode so that a guide part of a twist drill can be formed on the twist drill blanks, the processing efficiency of the twist drill blanks can be improved, the labor cost can be reduced, and the quality of products and the consistency of the quality can be improved.

The invention discloses a working face outburst risk prediction drilling precise implementation method, and belongs to the technical field of coal mine safety production. Comprising the following steps that 1, coal seam gas mechanical parameters are measured, drilling parameters are set, gas basic parameters, coal body hardness and soft layer distribution positions are obtained through geological exploration and field testing, and the drilling construction height, the azimuth angle, the dip angle and the drilling depth are set; 2, device debugging and drilling construction are conducted, specifically, the adjustable drilling device integrating a drilling tool and a twist drill rod is in place, parameters are adjusted through height adjustment, horizontal rotation, a pitching adjustment mechanism and an angle gauge, drilling is conducted at a constant speed, and a new drill rod is additionally installed till the designed depth is reached; 3, the drilling process is monitored and adjusted, resistance and stability are monitored through a sensor, the speed or the fixed state is adjusted, and the angle is rechecked for fine adjustment; and 4, drilling completion and ending verification are carried out. According to the method, the drilling precision and stability are improved, the labor intensity and risk are reduced, and the prediction reliability is improved.

The utility model discloses an anti-fracture high-speed steel straight-shank twist drill which comprises a drill handle and a spiral drill bit, the drill handle and the spiral drill bit are integrally arranged, the drill handle and the spiral drill bit are both made of high-speed steel materials, and a liquid drainage channel is formed in the center of the drill handle and the center of the spiral drill bit. A first liquid outlet and a second liquid outlet are formed in the end of the spiral drill bit, the first liquid outlet and the second liquid outlet are both communicated with the liquid discharging channel, and a reinforcing assembly used for reinforcing the twist drill is arranged on the outer side of the drill handle and the outer side of the spiral drill bit. According to the anti-fracture high-speed steel straight-shank twist drill, cooling liquid can be discharged from the chip removal groove, cuttings can be brought out through the cooling liquid, the chip removal efficiency is improved, meanwhile, a spiral groove is formed in the side edge of the spiral drill bit, a second liquid outlet is formed in the spiral groove and communicated with a liquid discharging channel, the discharged cooling liquid flows through the spiral groove, and the cutting efficiency is improved. And the first liquid outlet is matched, so that the cutting part of the drill bit can be effectively cooled, and the anti-fracture effect of the straight-shank twist drill is improved on the whole.

The utility model discloses an auger bit and a combined device with the auger bit, and belongs to the technical field of sampling devices. The twist bit comprises a rod part; one end of the end part is connected with the rod part, so that a circumferential annular containing space is formed, and the end part is used for preventing an ore sample from the rod part from falling back to a drill hole. The twist drill combination device comprises a drilling machine body and a twist drill bit, and the twist drill bit is installed on the drilling machine body through a drill rod and used for sampling of a tailing pond. When the gravity action and the adhesion force between the ore sample and the rod part are insufficient, the scheme can prevent the ore sample from falling back into the drill hole, so that the problem that the ore sample slips when the twist drill is used for drilling the ore sample in the prior art is solved, and meanwhile, the accuracy of a sampling result is ensured.

The invention provides a clamping unit of a twist drill rod, a twist drill rod taking-out device and a twist drill rod taking-out method, and relates to the field of twist drill rod taking-out, the adopted scheme is that the twist drill rod clamping unit comprises a push rod and further comprises a guide cylinder, and the guide cylinder and the end of the push rod are connected and coaxially arranged; the number of the clamping jaw assemblies is at least two, every two adjacent clamping jaw assemblies are not collinear, the distance between every two adjacent clamping jaw assemblies is smaller than the screw pitch of the twist drill rod, each clamping jaw assembly comprises a mounting base, the mounting bases are arranged on the inner wall of the guide cylinder, clamping jaws are arranged in the mounting bases, and torsion springs are connected between the clamping jaws and the inner walls of the mounting bases; the clamping jaws can swing under the action of blades of the twist drill rod, and the ends of the clamping jaws can abut against a rod body of the twist drill rod. And the hydraulic oil channel comprises an oil inlet channel and an oil return channel. The device can replace manual work to take out the fallen drill rod, the efficiency is high, and the risk is low.

The invention relates to the technical field of intelligent manufacturing equipment, in particular to an automatic welding machine for an alloy tool bit twist drill, which is characterized in that an S-shaped cooling liquid pipeline is arranged in a clamp body in a penetrating manner, two ends of the cooling liquid pipeline are communicated with a cooling liquid tank fixed on one side of the clamp body, and one end of the cooling liquid pipeline is connected with a cooling liquid pump in the cooling liquid tank; a heat dissipation box is installed on the other side face of the clamp body, the side face, connected with the clamp body, of the heat dissipation box is open, the side, adjacent to the heat dissipation box, of the S-shaped cooling liquid pipeline is arranged in the heat dissipation box, a plurality of suction fans are embedded in the upper portion of the outer side wall of the heat dissipation box, and a plurality of exhaust fans are embedded in the lower portion of the outer side wall of the heat dissipation box; the cooling liquid pump, the suction fan and the exhaust fan are all in electric control connection with the PLC console; the cooling liquid pipeline is arranged in the clamp body, effective heat dissipation is conducted on the clamp body in the welding process, and the phenomenon that the clamp body deforms due to the fact that the temperature is too high due to heat transfer, and clamping is not stable is avoided.

The utility model belongs to the technical field of reducer machining, and particularly relates to reducer shell machining equipment. Comprising a rack, an XY-axis motion platform is installed on the table top of the rack, a bench clamp is installed on the XY-axis motion platform, a drilling mechanism is installed on the table top of the rack, and the drilling mechanism comprises a Z-axis linear module, a fixing plate, a hollow rotating platform and a motor base. A workpiece is fixed through the bench clamp, feature information of the workpiece is extracted through the industrial camera and used for positioning the position and the angle of the workpiece, the feature information is fed back to the PLC, then the X-axis motion platform, the Y-axis motion platform and the drilling mechanism are controlled respectively to achieve accurate position control and motion execution, and double-hole machining is conducted through twist drills at the two ends of the drilling mechanism. And meanwhile, under the action of the hollow rotating platform, the drilling positions can be rapidly switched, the design greatly saves the feeding and discharging downtime, the working efficiency is remarkably improved, and the drilling machine is suitable for drilling operation of the flange face of the reducer shell of the same specification.

The present application relates to the field of mechanical device of different metal processing in specific combination, and specifically discloses a punching and bending combined processing numerical control machine tool of street code support, which comprises a workbench, a driving mechanism one is arranged on the workbench, a driving mechanism two is arranged on the driving mechanism one, a driving mechanism three is arranged on the driving mechanism two, a servo motor is arranged on the driving mechanism three, and a twist drill is arranged on the servo motor; a supporting plate is arranged on the workbench, and a bending mechanism one and a bending mechanism two are arranged on the supporting plate. The present application drives the bending concave die rotation by using the rotary motor four, drives the press bending punch rotation by using the rotary motor five, realizes the opposite combination of the second plane and the supporting plate, forms the punching clamping surface, then is flexibly shifted in the three-dimensional space by the driving mechanism one, the driving mechanism two and the driving mechanism three to carry out the drilling, can adapt to the processing requirement of different hole positions, and after resetting, can utilize the first plane and the V-shaped groove to cooperate with the press bending punch to carry out the bending, so that the process conversion time is significantly shortened.

The utility model belongs to the technical field of orthopedic drilling tools, and discloses a bone taking mouth gag with high structural strength, which comprises a centering drill, a twist drill head, a limit ring and a drill handle which are coaxially arranged, the centering drill is integrally arranged at a chisel edge of the twist drill head, the limit ring is integrally connected to the outer side of the bottom of the twist drill head, and the drill handle is connected with the drill handle. The root part of an auxiliary cutting edge of the twist drill head part is fixedly connected to the front end surface of the limiting ring; the end, close to the twist drill head, of the drill handle is connected to the rear end face of the limiting ring through a fillet. The strength of the drill bit part of the opener is improved, and the service life is prolonged.

The utility model discloses an adjustable square hole machine which comprises a base, an installation frame is fixedly arranged on the rear side of the base, a lifting assembly is arranged on the top of the base, and a workbench is installed on the top of the lifting assembly. A first rotating mechanism is arranged at the top of the mounting frame, a second rotating mechanism located above the workbench is arranged on one side of the first rotating mechanism, and the first rotating mechanism is at least used for driving the second rotating mechanism to rotate. A guide rail is arranged on the front face of the second rotating mechanism, and a grooving mechanism is arranged on the second rotating mechanism in a sliding mode through the guide rail and at least used for grooving machining of products. A transmission box is arranged at the top of the second rotating mechanism, and a driving mechanism is arranged on one side of the transmission box. The first rotating mechanism and the second rotating mechanism are adopted, the pitching angle and the left-right angle of the grooving mechanism can be adjusted, and therefore the machining angle of a twist drill and the machining angle of a grooving cutter are changed, the grooving requirements under different conditions are met, and the practicability of the square hole machine is greatly improved.

According to the efficient and high-strength three-groove type drilling and milling twist drill, a drilling part is provided with three sets of front tool faces and rear tool faces, arc tool faces are arranged on the connecting edges of the front tool faces and the rear tool faces of each set in a groove mode, a sawtooth part is a spiral guide part of a drill body and comprises spiral grooves and auxiliary cutting edges, and the spiral grooves are matched with the auxiliary cutting edges. A plurality of sawteeth are arranged on the auxiliary cutting edges at equal intervals, the section shapes of the portions, on the two sides of the spiral groove, of the lead core are gradually-enlarged inclined slopes, the arc cutter face is arranged between the front cutter face and the rear cutter face, so that the chip removal angle is effectively increased, the arc cutter face is matched with the three-groove type spiral groove, and the chip removal efficiency is improved. The whole cutting efficiency and chip removal efficiency can be effectively improved, the multiple sawteeth are arranged on the auxiliary cutting edges, the side face milling function can be achieved, and therefore the multifunctional twist drill is achieved.

The invention relates to the technical field of drilling, in particular to an auger bit with an adjustable mounting structure, which comprises a power transmission shaft, the end part of the power transmission shaft is fixedly connected with a mounting base, the inner wall of the mounting base is rotatably provided with a second rotating ring, and the second rotating ring is fixedly connected with a screwing ring seat; the outer wall of the screwing ring seat is rotationally sleeved with a front-end metal ring sleeve, the outer wall of the front-end metal ring sleeve is fixedly connected with a cooling liquid buffering frame, a second rotating ball slides along the circumference of the inclined face and can do up-down reciprocating motion, and at the moment, the second rotating ball drives a guide rod, a first rotating ball and a guide cover to do up-down reciprocating motion synchronously; the guide cover swings around the rotating rod in a reciprocating mode, reciprocating opening and closing are achieved, and at the moment, cooling liquid sprayed outwards from the fixing pipe is guided by the reciprocating opening and closing direction of the guide cover and sprayed to different height positions of the auger bit body for cooling.

The utility model relates to the technical field of twist drill tools, and discloses a combined stepped twist drill tool which comprises a tool handle, a drill bit mechanism is arranged at the bottom end of the tool handle, an external mechanism is arranged outside the tool handle and comprises a drill bit assembly and a connecting assembly, and the drill bit assembly is arranged outside the tool handle. The connecting assembly is arranged in the drill bit assembly, the drill bit assembly comprises a stepped drill bit, the stepped drill bit is arranged outside the cutter handle, a second chip groove is formed in the outer wall of the stepped drill bit, an end cover is arranged at the top of the stepped drill bit, an exhaust hole is formed in the top of the end cover, and a second cutting edge is arranged at the bottom of the stepped drill bit. And counter bores can be conveniently machined through the stepped drill bit. According to the combined stepped twist drill tool, the stepped drill bit and the tool handle are in limiting sliding connection, the tool handle and the stepped drill bit are connected through the four connecting assemblies, and therefore the stability of connection between the tool handle and the stepped drill bit is guaranteed, and meanwhile the problem of looseness in the rotating process is avoided.

The utility model provides a hard alloy multi-angle drill point twist drill for processing special Kevlar materials, which comprises a handle part and a blade part which are integrally formed, a drill point is arranged at the front end of the blade part, the drill point is provided with a center tip and an outer side tip, two bottom blades are symmetrically arranged on the drill point along the radial direction, each bottom blade is provided with two rear angle surfaces, and the rear angle surfaces are provided with two rear angle surfaces. The two sides of the connecting position of the bottom blades on the two sides are provided with symmetrical tooth end chip containing grooves, and the circumferential face of the blade part is provided with chip discharging grooves connected with the chip containing grooves. And through the distribution design of the center and the vertex angles on the two sides, the drilling centering effect of the drill bit is improved, it is guaranteed that after positioning, the hole position can be determined on the outer side, the hole precision is improved, the axial cutting resistance is reduced, cutting heat is reduced, and the cutter stability during drilling is improved.

The invention relates to the technical field of finishing grinding devices, in particular to a device and method for passivating microdefects of a cutting edge before cutter coating. The grinding device comprises a sand basin fixedly arranged at the top of a base, sand grains used for grinding the twist drill-shaped cutter are contained in the sand basin, a plurality of gathering assemblies used for gathering the sand grains are arranged in the sand basin, and each gathering assembly comprises a gathering cover capable of rotating; when the multiple driving columns rotate along with the gathering cover, the driving columns drive the lifting cap at the top of the main rod to ascend, the lifted lifting cap drives complete sand grains to get close to the bottom of a tool to be polished, meanwhile, the angular velocity difference between the static lifting cap and the rotating gathering cover disturbs gravel, and complete gravel and fine powder gravel are separated; the gap between the lifting cap and the side wall of the gathering cover always keeps discharging the fine powdery gravels, but the diameter of the gap is smaller than that of the gravels, so that the complete gravels are prevented from falling off.

The utility model discloses an air suction type adjustable positioning core. The device comprises a front-end positioning core, a twist needle ejector block, a spring breathable partition plate, a compression spring, a rear-end positioning core and an air pipe joint seat, a front end positioning core is arranged at the front end of the rear end positioning core; a vertically-through cavity is formed in the rear end positioning core. The cavity is respectively communicated with the front end positioning core and the air pipe joint seat; the twist needle ejector block, the spring ventilation partition plate and the compression spring are sequentially arranged in the cavity from top to bottom. The front-end positioning core is located at the upper end of the twist needle ejector block. According to the utility model, it is ensured that the cable needle placed in the positioning core is kept vertical, so that the length of the cable needle after crimping is kept consistent, and the dimensional precision of the cable needle after crimping can be improved.

The application discloses a twist drill with milling edges, which comprises a shank and a cutting part. The cutting part is provided with a plurality of long helical chip removal grooves extending to the shank along the central axis direction of the twist drill and a guide edge band. The front end of the long helical chip removal groove is provided with a main cutting edge and a transverse edge. The side of the long helical chip removal groove is provided with a taper milling area. The taper milling area comprises a plurality of blade petals. The blade petals are provided with a taper helical long edge, a taper helical short edge and a short helical chip removal groove. The short helical chip removal groove has the same rotation direction as the long helical chip removal groove. The taper helical long edge comprises N groups of micro milling edges connected in series along the helical direction of the taper helical long edge. The taper helical short edge comprises N groups of micro milling edges connected in series along the helical direction of the taper helical short edge. N is greater than or equal to 2. The micro milling edges are provided with a chip separation groove opposite to the rotation direction of the long helical chip removal groove. The application has the advantages of being applicable to composite material drilling, high drilling efficiency, high machining precision, good quality and the like.

The utility model relates to the technical field of drill bits, in particular to a sampling drill bit for water conservancy project survey, which comprises a twist drill, a fixing sleeve is fixedly connected to the bottom of the twist drill, an adjusting sleeve is slidably sleeved outside the fixing sleeve, a through hole is arranged in the fixing sleeve, a sliding hole is arranged outside the adjusting sleeve, and a through hole is arranged in the through hole. A limiting rod is fixedly connected to the outer portion of the fixing sleeve and located in the sliding hole, a driving adjusting assembly is further arranged at the top of the twist drill, and through the arrangement of the driving adjusting assembly, when the twist drill descends by a certain depth, the adjusting sleeve is driven to move downwards, the sliding hole corresponds to the through hole, and therefore the twist drill is driven to rotate. When the drill bit is used for drilling and sampling, underground water can enter the fixing sleeve through the through hole to be stored and complete sampling, then the adjusting rod is controlled to move upwards to enable the sliding hole and the through hole to be staggered, and therefore the drill bit is convenient and saves manpower when used for drilling and sampling.

The utility model discloses a sleeve type fixed-point sampling device for measuring drilling cuttings indexes, a first spring pin male joint of a sampling device adapter is arranged at the left end of an adapter body, a first spring pin female joint is arranged at the right end of the adapter body, and the upper side and the lower side of the adapter body are respectively provided with a fixed column; a first fixing groove and a first external thread are arranged at the left end of a first pipe body of the head pipe, a second external thread and a second fixing groove are arranged at the left end of a second pipe body of the common pipe, and an internal thread is arranged at the right end of the second pipe body. A second spring pin male connector of the twist drill rod is arranged at the left end of a drill rod body, a second spring pin female connector is arranged at the right end of the drill rod body, and drill rod threads are arranged on the outline of the outer surface of the drill rod body. Through cooperative use of the drilling assembly, the sleeve assembly and the adapter, fixed-point sampling in the drilling cuttings index measuring process can be achieved, the accuracy of the drilling cuttings index measuring value is improved, the risks of hole collapse, drill rod falling and the like can be reduced, and the sampling efficiency is improved.

The utility model discloses a stainless steel processing twist drill convenient to disassemble, which belongs to the technical field of processing drill bits and comprises a twist drill bit, a cylinder is mounted at the top end of the twist drill bit, the twist drill is reasonable in structure, a fixing seat is mounted in a fixing groove on a drill bit seat in a sliding manner, and a screw rod is matched with a nut, so that the twist drill is convenient to disassemble. According to the utility model, the fixing seat is mounted and fixed, the column body on the auger bit is in butt joint with the clamping seat on the fixing seat in a sliding manner according to the mounted fixing seat, and the inserting column on the clamping seat is clamped into the mounting groove A in the column body through the clamping pin in the mounting process, so that the auger bit can be mounted and fixed; the auger bit and the bit seat are disassembled and assembled in a segmented mode, the auger bit and the bit seat can be disassembled and assembled correspondingly according to needs, and when the auger bit is disassembled and assembled in the segmented mode, the auger bit can be disassembled and assembled only by pressing the jacking columns on the two sides inwards till the clamping pins are separated from the installation grooves A.

The utility model belongs to the field of drill bits, and discloses a coating inner-cooling twist drill bit which comprises a drill bit body, the top of the drill bit body is fixedly connected with a connector, the top of the connector is provided with a fixing head, the top of the fixing head is provided with a connecting pipeline in a penetrating mode, and the top of the connecting pipeline is communicated with a liquid inlet pipe. A liquid inlet channel is formed in the top of the connector in a penetrating mode and communicates with the connecting pipeline, a liquid inlet is formed in the top of the drill bit body, and a cooling pipeline is arranged in the drill bit body and communicates with the liquid inlet. The cooling pipeline is arranged in the drill bit body, and the liquid inlet pipe is connected with the cooling liquid storage box outside the drilling machine, so that cooling liquid is conveyed into the drill bit body, the cooling liquid in the cooling pipeline can effectively absorb heat in the drill bit body, and therefore when the drilling machine works, heat in the drill bit body can be effectively dissipated. And the effect of cooling the interior of the drill bit body is achieved, and the protection effect on the drill bit body is improved.