35results about How to "Increase cutting force" patented technology

The utility model relates to the technical field of metal cutting, in particular to a magnesium metal cutting machine which comprises a machine body, and a milling device, an ingot clamping device corresponding to the milling device, an ingot pushing device corresponding to the ingot clamping device and a motor driving the milling device to rotate are arranged on the machine body. The ingot pushing device comprises a pushing hydraulic cylinder arranged on the machine body and a pushing top seat connected with the pushing hydraulic cylinder, an ingot station is arranged on the side, away from the pushing hydraulic cylinder, of the pushing top seat, the other end of the ingot station extends to the ingot clamping device, and a limiting switch is arranged on the side edge of the ingot station. The pushing device comprises two pushing hydraulic cylinders, and each pushing hydraulic cylinder is connected with two pushing footstocks. According to the chip cutting machine, the two pushing hydraulic cylinders work alternately, two sets of ingot materials are milled alternately, a cutter can be cooled, continuous cutting and continuous work are better achieved, the working efficiency is improved, and the yield is increased.

The invention relates to the technical field of optical fiber processing, and discloses a multi-core-diameter optical fiber ultrasonic cutting system under uniform stress, which comprises a clamping symmetrical assembly, a horizontal tension driving assembly, an ultrasonic cutting assembly and a cutting knife pushing assembly, an optical fiber is clamped through the cooperation of the pressing plate and the clamping assembly base; the clamping assemblies are slidably connected with the horizontal tension driving assembly, the two clamping assemblies are driven by the horizontal tension driving assembly to move reversely, and horizontal tension is applied to the optical fiber, the ultrasonic cutting assembly is slidably connected with the cutting knife pushing assembly, and the cutting knife pushing assembly is arranged on one side of the clamping symmetrical assembly and located between the two clamping assemblies. The cutting knife pushing assembly drives the ultrasonic cutting assembly to move to cut the optical fiber; the optical fiber cutting device can effectively meet the cutting requirements of optical fibers with different core diameters, the flatness of the cut end face is remarkably improved, and burrs and cracks are reduced.

The utility model provides an improved structure of a drill bit, which is characterized in that a cutting edge part is formed on one side of a handle part of the drill bit, and the cutting edge part comprises a cutting section and a chip groove extending from the cutting section to the handle part in a surrounding manner; the cutting section comprises two main cutting edges, a first edge face, a second edge face, two thinning cutting edges, thinning cutting inclined faces and at least one thinning auxiliary inclined face, wherein the first edge face and the second edge face are located on the side edges of the two main cutting edges and obliquely extend at different angles, and the thinning cutting inclined faces are located on the side edges of the two thinning cutting edges and incline at acute angles. The core thickness of the center of the drill bit is increased, and the cutting capacity of the drill bit is improved.

The utility model relates to a pendulum saw blade, pendulum saw and surgical robotic.The pendulum saw blade comprises a cutting part and a saw blade body, the cutting part comprises a first saw tooth row and a second saw tooth row which are arranged in the swinging direction of the saw blade body, the first saw tooth row and the second saw tooth row are arranged back to back, and the cutting directions of the first saw tooth row and the second saw tooth row are opposite; the cutter is characterized in that the first sawtooth row and the second sawtooth row each comprise first cutting teeth and second cutting teeth, the first cutting teeth and the second cutting teeth are each provided with a cutting face, and the intersecting lines of the cutting faces of the first cutting teeth and the horizontal plane and the intersecting lines of the cutting faces of the second cutting teeth and the horizontal plane are arranged at a first preset angle. The cutting capacity of the saw blade, the swing saw and the surgical robot can be improved.

The utility model relates to an oil exploitation drilling tool. The drilling tool comprises a drill body, three evenly-distributed cones, a PDC cutting structure and a plurality of auxiliary assemblies. The tooth wheel is composed of a tooth column and three layers of tooth palms, and coarse and fine layered crushing is carried out step by step, so that the drilling efficiency is improved. The PDC cutting structure is arranged at the end of the drill body and comprises a triangular prism, a column groove, a main blade, an auxiliary blade and a side blade, large-diameter PDC cutting parts are arranged on the main blade and the auxiliary blade, PDC cutting parts with the diameters gradually reduced are arranged on the side blade, the cutting effect is optimized, and the adaptability of the drilling tool in a hard rock stratum is enhanced. The adaptability of the drilling tool in soft and hard rock stratums is further improved through the small blades and the small-diameter PDC cutting pieces on the rectangular plate, and it is ensured that the drilling tool works stably and efficiently. The overall design effectively reduces the abrasion of the drilling tool, prolongs the service life, improves the drilling efficiency, and reduces the mining cost. The drilling tool is suitable for rock stratums with different hardness and has a wide application prospect in oil exploitation.

The utility model belongs to eccentric power transmission technical field, especially relates to a kind of eccentric power transmission rod and eccentric power mechanism of self-adapting compensation cutting force. Including: swing bar;Compensation block, the compensation block is locked and is connected between the swing bar;Fixed block, the fixed block is hingedly connected between the swing bar;Spring pin, the spring pin is movably inserted in the compensation block, and is locked on the fixed block, and the compensation block can be pushed along the spring pin to move axially by the spring pin. The lower end of the swing bar is provided with a waist-shaped groove, for being movably inserted with eccentric pin on eccentric disc. The utility model can overcome suddenly increased cutting resistance, so as to maintain the stability and continuity of cutting process, completely solve the problem of whole machine bouncing dance caused by cutting resistance change.

The utility model discloses a portable cable cutting device, relates to the technical field of cable cutting, and aims to solve the problem that in the prior art, when the diameter of a cable is large, the cable is difficult to cut off effectively only in a downward pressing mode. A supporting base is fixedly connected to the middle of the upper end of the supporting bottom plate, a semicircular containing groove is formed in the middle of the upper end of the supporting base, a C-shaped supporting frame is connected to the upper end of the supporting base, a cutting knife is connected to the upper end of the inner side of the C-shaped supporting frame, and a bearing plate is fixedly connected to the middle of the upper end of the cutting knife. A manual hydraulic rod is fixedly connected to the middle of the upper end of the C-shaped supporting frame, and the lower end of the telescopic end of the manual hydraulic rod penetrates through the middle of the upper end of the C-shaped supporting frame, then extends to the upper end of the bearing plate and is fixedly connected with a circular pressing plate. A large-diameter cable can be easily cut off, and the problem that a traditional pressing type cutting device is insufficient in strength is solved.

The utility model relates to bridge expansion joint accumulated slag automatic cleaning and digging device, aims at solving current cleaning rolling brush position fixed, thereby cannot be applicable to different depth bridge expansion joint, and the impurity of joint in bridge expansion joint, through the cleaning effect of the impurity of joint of cleaning rolling brush is poor technical problem, including: car body, adjusting assembly is set up in car body one side, adjusting assembly includes: mounting bracket, its inside is equipped with cleaning mechanism, and cleaning mechanism is used for cleaning the impurity in bridge expansion joint, vertical adjusting mechanism sets up on mounting bracket, is used for adjusting cleaning mechanism height, drive mechanism sets up in mounting rack side portion, is used for driving cleaning mechanism rotation, the utility model has through vertical adjusting mechanism dynamic adjustment cleaning mechanism height, adapts different depth bridge expansion joint, solves the problem of cleaning blind area caused by traditional rolling brush fixed.

The invention discloses a dual-purpose cutting chain type transverse shaft type cutting mechanism for a coal roadway and a rock roadway and a heading machine. The cutting mechanism comprises a machine frame, a motor, a cutting chain, a left cutting head and a right cutting head, the motor, the cutting chain, the left cutting head and the right cutting head are installed on the machine frame, the left cutting head and the right cutting head are located on the two sides of the cutting chain respectively, and the motor drives the cutting chain to rotate so as to drive the left cutting head and the right cutting head to rotate; wherein a plurality of first left cutting teeth and a plurality of first right cutting teeth are distributed on the cutting chain; a plurality of second left cutting teeth are distributed on the left cutting head; a plurality of second right cutting teeth are distributed on the right cutting head; the first left cutting picks and the second left cutting picks are matched to form a right spiral line shape, and the first right cutting picks and the second right cutting picks are matched to form a left spiral line shape. The problem that an existing cutting mechanism is low in cutting efficiency is solved.

The utility model relates to the technical field of engineering machinery, and discloses an excavator structure capable of increasing the digging force of an excavator bucket, which comprises a machine body, a rotating arm is rotatably connected to the rear side of the top end of the machine body, the other end of the rotating arm is rotatably connected with a conical excavator bucket, and the outer wall of the conical excavator bucket is fixedly connected with a C-shaped steel plate I; an anti-skid pad is arranged on the inner side of the conical excavator bucket, a second C-shaped steel plate is attached to the top end of the outer wall of the anti-skid pad, first bolts are connected to the corners of the outer wall of the second C-shaped steel plate in a threaded mode, and the other ends of the first bolts are connected with the inner side of the conical excavator bucket in a threaded mode. According to the utility model, through the mutual matching of the C-shaped steel plate I, the conical bucket, the C-shaped steel plate II, the non-slip mat, the bolt I, the conical mat, the conical head and the bolt II, the hardness of the bucket teeth is higher, and meanwhile, the length of the bucket teeth is increased, so that the cutting force and the penetrating force of the bucket are improved, and the bucket can enter a hard soil layer or a rock layer more easily.

This invention discloses a conveying device for rock wool boards with adaptive adjustment function, relating to the field of conveying technology. The conveying device includes a frame, a drive motor, conveying rollers, and a spacing adjustment assembly. The drive motor is fastened to the frame, and its output end is drivenly connected to the conveying rollers. The shaft of the conveying rollers is rotatably connected to the frame. Several conveying rollers are arranged along the material conveying direction. The spacing adjustment assembly is connected to the frame and contains a trimming component. The trimming component can automatically adjust the trimming method according to the type of rock wool board. A dust collection hood is provided on the spacing adjustment assembly. While conveying the rock wool boards, when the rock wool boards enter the spacing adjustment assembly, the spacing between the rock wool boards is first adjusted. Then, the side cuts of the rock wool boards are trimmed by the trimming component. A dust collection device is connected to the dust collection hood, and the dust generated during trimming can be collected through the dust collection hood.

The utility model discloses a roller body mechanism and a slicing machine, and belongs to the technical field of silicon wafer machining devices. The roller body mechanism comprises a first roller body, a second roller body and a third roller body which are arranged at intervals, the first roller body and the second roller body are flush in the first direction, the third roller body, the first roller body and the second roller body are arranged at intervals in the second direction, and the second direction intersects with the first direction; the first roller body and the second roller body are of a cylindrical structure, at least one end of the third roller body is provided with an adjusting part, and the adjusting part is of a conical structure.

The utility model provides a PCD (Poly Crystal Diamond) anti-vibration precise threading tool blade, which is characterized in that the tool nose angle is 60 degrees, the rear angle of the right edge is 1 degree, and the rear angle of the left edge is 6 degrees. According to the utility model, the polycrystalline diamond PCD material is adopted, the friction ratio is extremely low, the temperature resistance is higher, the durability is high, the physical wear resistance, the chemical wear resistance, the crescent wear resistance, the mechanical wear resistance and the cold welding wear resistance are higher, and the like. The angle of the tool nose is 60 degrees, the relief angle of the right blade is 1 degree, and the relief angle of the left blade is 6 degrees, so that the cutting rigidity of the blade can be ensured, the cutting force is better, the cutting resistance is lower, the strength is smaller, the resonance can be prevented, and the cutter has good impact resistance and cutting sharpness. And meanwhile, the PCD blade can be stably fed for cutting, a high-precision cutting surface with a controllable hole pattern of an aluminum alloy workpiece to be machined can be ensured, and the tool durability is quite good.

The invention relates to a method for improving diamond wire cutting force, a production system, a cutting system and a diamond wire, and the method comprises the steps that a bus is guided into a machining system through a first groove of a production pulley, the installation parallelism of the production pulley and the bus is controlled, friction of the first groove to the bus is reduced, the number of torsion turns of a diamond wire coating is reduced, and the finished diamond wire is obtained; the finished diamond wire is wound to third grooves obliquely formed in the guide wheels through second grooves of the winding pulleys, and a wire net is formed between the guide wheels; acquiring the rotation direction of the guide wheel, and judging the first torsion direction generated by single-side friction of the side wall of the third groove on the finished diamond wire at the moment; the inclination of the winding pulley is adjusted to enable the side wall of the second groove to be in single-side friction with the finished diamond wire, and it is ensured that the second twisting direction generated by the side wall of the second groove to the finished diamond wire is the same as the first twisting direction. The cutting capacity of the diamond wire is enhanced through the improvement of the production process and the same-direction twisting fit after installation.

The invention relates to the field of numerical control machining, in particular to a rough turning tool path planning method and system for an omnidirectional turning tool. The method comprises the following steps: acquiring front angle and rear angle interference areas based on positive and negative values of a starting direction of each line segment and a front angle included angle and a rear angle included angle of a tool in machining geometry, updating the machining geometry, obtaining a to-be-machined area based on the updated machining geometry, axial allowance and radial allowance, and obtaining a to-be-machined area according to a set cutting direction type and a cutting depth of each layer. The to-be-machined area is divided into a plurality of tool path to-be-cut areas, the cutting direction type and the cutting direction of each tool path to-be-cut area are determined based on the set cutting direction type and the machining geometric direction, and the tool path type of each tool path to-be-cut area is determined according to the cutting direction type and the cutting direction of each tool path to-be-cut area; and based on the cutting end point of the to-be-cut area of the ith tool path and the cutting start point of the to-be-cut area of the (i + 1) th tool path, constructing a transition tool path between the adjacent areas. The rough turning tool path efficiency is effectively improved.

The utility model discloses a silicon rod grooving device, a silicon wafer and a battery piece, the silicon rod grooving device is used for forming a longitudinal through groove in a silicon rod, the silicon rod grooving device comprises an ultrasonic machining assembly and a grooving cutter connected with the ultrasonic machining assembly, and the ultrasonic machining assembly is used for driving the grooving cutter to make ultrasonic vibration. The grooving cutter connected with the ultrasonic machining assembly is adopted for grooving, compared with a traditional grinding grooving mode, the longitudinal through groove formed in the silicon rod is neat in groove shape and small in edge breakage and burr, the surface quality of the longitudinal through groove is improved, subsurface damage of the longitudinal through groove is reduced, and the service life of the longitudinal through groove is prolonged. Therefore, the fragment rate of the grooved silicon wafer in subsequent working sections such as degumming, cleaning, sorting and the like is reduced.

The utility model discloses a single-shaft speed reduction square turning power head which comprises a power head shell, a cutterhead shaft, a cutterhead shaft synchronizing wheel, a square turning cutterhead, a counterweight balance wheel, a motor, a motor synchronizing wheel and a synchronous belt. The utility model has the beneficial effects that the torque output of the cutter head shaft is increased, the cutting force is improved, and the intermittent cutting vibration is reduced, so that the surface quality of a square turning tool is improved, and the service life of the square turning tool is prolonged; the turning power can be used as a standardized module accessory of a metal cutting machine tool, and is applied to lathe technical transformation or numerical control lathe to increase the turning function.

This invention discloses an iterative optimization method for internal gear turning processes and tool parameters. The method includes: establishing a cutting edge function and a cutting edge sweep surface function in the turning space, and constructing a three-dimensional chip model; calculating micro-element chip parameters based on the chip model and establishing a cutting force calculation model; establishing a finite element simulation model for turning; setting initial values ​​for tool parameters, and optimizing process parameters with cutting force, maximum chip cross-sectional area, and material removal rate as objectives; optimizing tool structure parameters using finite element simulation based on the optimized process parameters; iteratively optimizing until convergence conditions are met, and outputting the optimal collaborative parameters. This invention achieves systematic collaborative optimization of process parameters and tool structure parameters, effectively reducing cutting forces, improving machining quality and tool life, and is suitable for efficient machining of high-precision internal gears.

A chamfering device for table and chair panels, relating to the field of table and chair panel devices, includes an operating table, a limiting plate, a power box, and a power assembly. The limiting plate is fixedly connected to the operating table, and the power box is fixedly connected to the operating table. The operating table has a cutter head hole located at the connection between the operating table and the limiting plate. The power assembly is fixedly connected to the power box and has a table and chair panel density adaptive chamfering component. The table and chair panel density adaptive chamfering component includes a tapered chamfering cutter, a cutter head clamp, a rotating shaft, a cutter head pressure adaptive component, and a cutter head micro-vibration component. The rotating shaft is fixedly connected to the power assembly and is connected to the cutter head pressure adaptive component. The cutter head pressure adaptive component is connected to the cutter head clamp through the cutter head micro-vibration component, and the cutter head clamp is connected to the tapered chamfering cutter. The beneficial effect is to avoid excessive pressure from the tapered chamfering cutter on soft or uniformly dense materials during cutting, which could cause wavy edges on the panel.

The application discloses a container inner wall composite grinding and cleaning treatment process, which comprises the following steps: (1) rough grinding treatment, (2) discharge cleaning, (3) fine grinding treatment, (4) secondary discharge cleaning, (5) primary deionized water cleaning treatment, (6) isopropanol cleaning treatment, (7) secondary deionized water flushing, (8) hot nitrogen drying and (9) inner wall detection. When the grinding treatment is carried out in steps (1) and (3), the oil cylinder telescopic action drives the grinding frame to tilt and swing. The application solves the problem that the grinding at the bottle shoulder cannot reach the position, abrasive forms turbulent motion in the container, and effectively solves the problem of single rotation of traditional grinding.

The utility model relates to the technical field of swing heads, in particular to a swing head A-axis box body structure which comprises an A-axis box body, the A-axis box body upwards bears a C-axis component, a cavity is formed in the upper portion of the A-axis box body, a left driving stator is fixedly arranged on the left side in the cavity, a right driving stator is fixedly arranged on the right side in the cavity, and the left driving stator and the right driving stator are symmetrically arranged. The A-axis box body is of a wide-end-up structure, good balance can be achieved between box body supporting rigidity and box body light weight, the light-weight A-axis box body structure enables the swing head to have excellent dynamic response performance, the weight of an A axis is effectively reduced, meanwhile, the supporting rigidity and dynamic performance of the swing head are greatly improved, and the swing head is suitable for being used in a large-scale production line. Therefore, the swing head achieves higher precision and better stability, and meanwhile, the swing head has higher supporting rigidity and higher working precision compared with a conventional swing head of a box body structure. The A-axis box body structure is of a double-motor driving structure and a double-rotary-table bearing supporting structure, and the effects of high cutting capacity, high rigidity, high precision and the like are achieved.

The application discloses a machining method of a casing inner cavity weight-reducing groove and a casing, and the machining method comprises the following steps: using a milling cutter with a diameter greater than twice the radial allowance width of the casing inner cavity weight-reducing groove, and extending the milling cutter into the casing inner cavity along an axial direction; adopting a deep hole peck drilling mode to perform axial plunge milling along the weight-reducing groove, and performing interval plunge milling along a circumferential direction for multiple times to form a plurality of lace grooves and assembly bosses; wherein, when the axial plunge milling is performed, the circumferential direction and the width direction of the radial allowance of the weight-reducing groove are combined into one layer and are milled through by one cutter. The machining method adopts the milling cutter with the diameter greater than twice the radial allowance width, improves the cutting force of the cutter, and reduces vibration and the phenomenon of broken edges in the machining process; the machining method adopts the machining mode of one cutter from top to bottom to penetrate and mill the circumferential direction and the width direction, improves the machining efficiency, and the main stress of the milling cutter in the drilling and milling process is an axial force, so that the acting force on the radial cutting force of the machine tool is greatly reduced, and the deformation of the casing can be reduced.

The utility model discloses a high -speed tool for breaking wall machine belongs to breaking wall machine technical field, including tool holder, connecting shaft, comminuting cutter and press down cutter, the connecting shaft passes through bearing and is installed on the tool holder, the connecting shaft is provided with the limiting portion, the comminuting cutter is installed respectively in the limiting portion with press down cutter, and is provided with the support rod between the comminuting cutter and press down cutter, press down blade is equipped with in the press down cutter both ends, the press down blade is gradually variable curvature circular arc shape, the press down cutter is connected with the limiting portion through angle adjusting mechanism, the connecting shaft is matched with the tool holder through magnetic suspension bearing, the utility model discloses gradually variable curvature circular arc shape blade is set up to adopt, cooperation fluid guide coating, effectively reduce liquid vortex height, promote fluid press down efficiency, at the same time, magnetic suspension bearing is matched with the connecting shaft, and the friction and vibration are reduced significantly, reduce the noise.

This utility model relates to the field of milling cutter technology, specifically to a cutting insert for a rotary milling cutter head, comprising a cutter head and a cutter body. The cutter head is fixed to the cutter body, which has a positioning bevel. The positioning bevel is used to engage with a wedge to press the cutter body firmly onto the cutter head. The wedge is fixed to the cutter head by screws. The cutter body includes a fixed end and a mounting end. The positioning bevel is located at the fixed end and is inclined forward from top to bottom. The mounting end has a mounting groove for mounting the cutter head, the shape of which matches the shape of the cutter head. By providing a positioning bevel on the cutter body that engages with the wedge, the cutter body can be locked onto the cutter head by the wedge. Compared with the screw fixing method in the prior art, the bevel pressing method avoids drilling holes in the cutter body, reducing the manufacturing cost of the cutter body while increasing its strength. In addition, the wedge fixing method can effectively prevent the cutter from loosening or shifting due to force during rotary milling, ensuring the accuracy and quality of rotary milling.

The invention provides an environment-friendly total-synthesis water-based aluminum alloy cutting fluid and a preparation method thereof, and belongs to the field of cutting fluids. The cutting fluid is prepared from the following chemical components: 2.0 to 5.0 parts of diethylene glycol dimethyl ether, 0.5 to 1.5 parts of triethanolamine, 0.1 to 1.0 part of sodium chloride, 1.0 to 3.0 parts of sulfolane, 0.5 to 1.5 parts of a surfactant, 0.1 to 1.0 part of an aluminum corrosion inhibitor, 0.05 to 0.3 part of an extreme pressure agent and 85 to 96 parts of dolomite / zirconium oxide based nanofluid. The dolomite / zirconia-based nanofluid is prepared from dolomite, zirconia, quaternized sodium alginate and deionized water. The chemical components of the cutting fluid are reasonably designed, so that the lubricating performance, the cooling performance and the environment-friendly performance of the cutting fluid are improved at the same time.

The utility model relates to the technical field of cutting tools, in particular to a flat-angle margin microbit capable of stably guiding chips, which comprises a drill edge and a drill handle, a connecting part is arranged between the drill edge and the drill handle, the drill edge comprises an inner core and a margin, and the margin is spirally distributed on the outer wall of the inner core. The edge position of the cross section of the edge strip extends outwards to form a right-trapezoid-shaped flat-angle protrusion, the inner core comprises a drill tip and a drill tail, the edge strip extends from the drill tip to the drill tail to form a first chip guide groove and a second chip guide groove, and the first chip guide groove and the second chip guide groove converge to form a third chip guide groove. The side face area of the drill edge is increased through the flat-angle protrusions, the first chip guiding grooves and the second chip guiding grooves are combined to form the third chip guiding grooves to reduce the length of the edge belt spacing part between the chip guiding grooves, and therefore the rigidity of the drill bit is improved, and when the edge belts rotate, trapezoidal slopes on the flat-angle protrusions make contact with a workpiece to be machined for guiding cutting. The cutting capacity of the drill is improved.

The large-diameter diamond wire comprises a bus, a reinforcing layer and diamond particles, the bus is a single metal wire, the reinforcing layer wraps the outer surface of the bus, a plurality of axial chip grooves are formed in the reinforcing layer, and the diamond particles are arranged in the chip grooves. And the diamond particles are embedded and distributed on the reinforcing layer and do not block the chip grooves. The diameter of the diamond wire used for cutting materials such as crystalline silicon and sapphire is increased to 500-1000 micrometers from 40-500 micrometers, and the chip grooves suitable for stone cutting are designed, so that the cutting stability of the diamond wire is greatly improved, and the cutting efficiency is doubled.

The utility model discloses a cellulose plate waste crushing and recycling device which comprises a crushing box, and a crushing mechanism and a driving mechanism for driving the crushing mechanism are mounted at the upper part of the crushing box; the scattering mechanism comprises a control motor and a transmission rod rotationally connected to the lower portion of the crushing box, the transmission rod is horizontally arranged in the length direction of the crushing box and is in transmission connection with an output shaft of the control motor, and a plurality of scattering pieces are arranged on the surface of the transmission rod; the scattering part comprises a lantern ring fixedly welded to the surface of the transmission rod and a plurality of scattering hobs evenly installed in the circumferential direction of the lantern ring. Due to the fact that the scattering part is arranged below the crushing mechanism, crushed wood chips can directly fall on the scattering part, a transmission rod is driven by a control motor to rotate at a high speed, and in the rotating process of the transmission rod, scattering hobs on the surface of the transmission rod rotate at a high speed to quickly scatter and divide the crushed wood chips which are pressed together. And the influence on subsequent use caused by caking of the wood chips is prevented.

The utility model relates to the technical field of tapping devices, in particular to a detachable tapping fragment ejector capable of rotating at a high speed, which comprises a metal shell, six scrap discharge grooves are arranged on the outer surface of the metal shell, an upper round shell is fixedly connected to the middle of the upper end of the metal shell, a first screw hole is arranged on the right portion of the outer surface of the upper round shell, and a second screw hole is arranged on the right portion of the outer surface of the upper round shell. A tapper connecting rod is in threaded connection with the interior of the upper round shell, a second screw hole is formed in the right portion of the outer surface of the tapper connecting rod, a titanium-plated center drill is fixedly connected to the middle of the lower end of the tapper connecting rod, a bearing is fixedly connected to the middle of the upper shell wall of the metal shell, and a spring is connected to the outer side of the bearing in a sleeving mode. According to the detachable trepanning fragment ejector capable of rotating at high speed, high-speed rotation is achieved through linkage of the spring and the bearing, and compared with a traditional trepanning device, the trepanning precision and quality are improved through cooperation of the helical tooth groove, the carborundum coating, the scrap discharging groove and other structures, and meanwhile material scrapping is reduced.

The utility model discloses a positioning and cutting device which comprises a machine box, a control table is arranged outside the machine box, a cutting mechanism is installed inside the machine box, the cutting mechanism comprises a tool apron, an inclined tool groove is formed in the surface of the tool apron, a tool rest is installed on the upper surface of the tool apron, fixing seats are installed on the two portions of the upper end of the tool rest respectively, and the fixing seats are fixed to the machine box. A sliding groove is formed in the tool rest, a cutter is slidably installed on the tool rest through the sliding groove, a plurality of through holes are formed from the lower surface of the tool apron to the inclined tool groove, the through holes are all connected with air pipes, an air blower is fixed in the machine box, and an output port of the air blower is connected with the air pipes. And the cutter and the air blower are electrically connected with the console. By arranging the cutting mechanism, the console can control the cutter to cut the passing filter bag, and the air blower blows air, so that the cut part of the filter bag is prevented from being clamped into the cutter groove.