1472 results about "A diamond" patented technology

In one aspect of the present invention, a drill string has a drill bit with a body intermediate a shank and a working face. The working face has a plurality of blades converging at a center of the working surface and diverging towards a gauge of the working face. At least one blade has a cutting element with a carbide substrate bonded to a diamond working end with a pointed geometry. The diamond working end also has a central axis which intersects an apex of the pointed geometry. The axis is oriented between a 25 and 85 degree positive rake angle.

A wide-field dynamic magnetic imaging device and method. The wide-field dynamic magnetic imaging device comprises: a probe assembly (1), comprising a diamond (101) containing NV centers; a microwave magnetic field assembly (2) configured to generate a uniform microwave field and a uniform bias magnetic field in the vicinity of the diamond (101), so as to regulate the spin energy level of the diamond (101) and the quantum state evolution process; a laser modulation assembly (3) configured to output an initial uniform pulsed laser to excite the diamond (101) to emit fluorescence; a fringe light modulation assembly (4) configured to modulate the initial uniform pulsed laser to output a fringe pulsed laser, causing the fluorescence emitted by the diamond (101) to be fringe fluorescence, or to modulate the fluorescence emitted by the diamond (101) into fringe fluorescence; a fluorescence detection assembly (5) configured to perform spatial imaging on the fringe fluorescence to obtain magnetic field information of a sample under test (7), thereby obtaining an initial magnetic image of said sample (7); and a data processing assembly (6) configured to perform Fourier transform and inverse Fourier transform on the initial magnetic image to obtain a first magnetic image.

The invention discloses a wide-dynamic-range diamond NV color center magnetic sensing method and system, and the method comprises the steps: (1) calibrating the initial resonant frequency and magnetic sensing coefficient of a diamond NV color center in an initial magnetic field environment; (2) in a to-be-measured magnetic field environment, a microwave generator applies frequency-modulated microwaves to the diamond NV color center with the current resonant frequency as the center frequency; demodulating the fluorescence signal in real time by using a phase-locked detection technology to obtain an error signal; calculating the detuning amount of the center frequency in real time according to the error signal and the magnetic sensing coefficient, and further calculating the variable quantity of the magnetic field intensity; meanwhile, the detuning amount is fed back to a microwave generator to track the resonance frequency of the diamond NV color center; and (3) continuously and repeatedly executing the step (2) to realize wide-dynamic-range magnetic field measurement. The method has the advantages of wide dynamic range, high detection capability on strong and weak field mixed signals in a complex application scene and the like while giving consideration to the magnetic sensing sensitivity.

The invention discloses a high-heat-flux heat dissipation system for an on-orbit computing power cluster, and belongs to the technical field of spacecraft heat control. The system is independent of a satellite conventional thermal control platform and is specially used for discharging waste heat of an AI calculation array. The system comprises a heat capture unit, a pumpless heat transfer unit and a foldable heat dissipation unit. The heat transmission unit comprises a micro-channel flexible pulsating heat pipe (such as a diamond film material), and the heat pipe spans a folding area and has the functions of structural connection and heat transmission, so that a thermal low-impedance independent channel relative to a satellite structure is formed. Through the design of removing a mechanical pump and removing a mechanical hinge, the problems of large weight, micro-vibration interference, high contact thermal resistance and the like of a heat dissipation system of the computing power satellite are solved, and preferential directional heat dissipation of high-flux heat is realized.

The invention relates to the technical field of semiconductor packaging and cooling, and particularly discloses a diamond-copper composite micro-channel-based cooling and packaging structure which comprises a packaging shell and a diamond-copper heat conduction plate with the bottom in floating lap joint through an elastic sealing ring. A plurality of heat exchange stand columns are integrally formed on the upper surface of the heat conduction plate, and the heat exchange stand columns are inserted into the containing counter bores of the packaging shell to form micro-channel annular gaps. A piezoelectric vibration plate dividing the medium cavity into a storage cavity and a jet flow cavity is integrated in the packaging shell, and the jet flow cavity communicates with a flexible connecting pipe section arranged over the heat exchange stand column in a suspended mode. Spiral fins are arranged on the surfaces of the heat exchange stand columns, horn-shaped flow guide pieces are arranged at orifices of the containing counter bores, and C-shaped groove flow guide fins which are arranged in a staggered mode are arranged on the bottom face of the heat conduction plate. According to the invention, low-thermal-resistance, high-flux and high-reliability direct contact type active heat dissipation for a high-power-density device is realized.

The invention provides a light source multiplexing diamond NV color center wide field detection system and an illumination detection method. The system comprises a diamond containing an NV color center, an exciting light module, a first double-color sheet, an objective lens, a second double-color sheet, a wide field imaging module, an illumination imaging module and a microwave module, exciting light generated by the exciting light module irradiates the first double-color piece, is guided to the objective lens, and irradiates the diamond after being transmitted by the objective lens so as to excite the NV color center of the diamond to generate fluorescent light; the objective lens is of an infinity type; the exciting light is irradiated to a sample to be detected after being transmitted by the diamond; fluorescent light and exciting light from a sample to be detected are collected by the objective lens, then transmitted to the first double-color piece and guided to the second double-color piece through the first double-color piece, the second double-color piece guides the fluorescent light to the wide-field imaging module for imaging, and the exciting light in the second double-color piece is guided to the illumination imaging module for imaging. Illumination can be achieved in the exciting light working state, exciting light switching operation in the prior art is avoided, and efficiency can be remarkably improved.

The embodiment of the invention discloses a scanning NV probe microscope which comprises an atomic force microscopy system used for detecting surface topography information of a sample and an optical detection magnetic resonance system used for detecting surface magnetic field distribution information of the sample, and the atomic force microscopy system comprises a vibration arm and a diamond probe. The optical detection magnetic resonance system comprises an NV color center, a transition excitation light path and a fluorescence detection light path; a sample to be scanned and the transition excitation light path are respectively positioned on two opposite sides of the diamond probe, and the transition excitation light path and the fluorescence detection light path are positioned on the same side of the diamond probe; a first metal coating film is arranged on one side, close to the sample, of the diamond probe and is used for blocking surface fluorescence of the sample. According to the scanning NV probe microscope provided by the embodiment of the invention, the metal coating is arranged at the bottom of the diamond probe to block stray fluorescence from the surface of the sample, so that the problems of low magnetic field imaging signal-to-noise ratio and limited measurement precision of the existing scanning NV probe microscope are solved.

The invention relates to a high-precision photonic crystal waveguide signal detection method and device based on a diamond quantum sensor. The method comprises the following steps: acquiring a vibration signal transmitted by a phononic crystal waveguide through a diamond quantum sensor; performing frequency domain transformation on single-frame signals in the vibration signals in sequence to obtain single-frame frequency domain features; inputting the frequency components into a trained detector model, acquiring a long-range dependency relationship between frequency characteristics corresponding to different frequency components and context information between the frequency characteristics through a self-attention module, and correcting the frequency characteristics corresponding to the related frequency components according to the long-range dependency relationship and the context information; identifying an aggregation feature containing the corrected frequency feature through a classification layer to obtain a predicted binary numerical value corresponding to the single-frame frequency domain feature; the long-range dependency relationship means that the amplitude information and / or the phase information between the two frequency components with the frequencies exceeding the preset threshold value have an association relationship. The method can improve the signal detection precision.

The invention discloses a diamond microstructure precision grinding system and method with visual positioning, and the method comprises the following steps: collecting a microscopic visual image, calibrating a visual coordinate system and a machine tool coordinate system, and building a unified positioning coordinate system; extracting composite visual features, constructing an energy field, performing adaptive partitioning, and generating risk partitioning codes; the risk partition codes are input into a double-flow network, grinding signals are input into grinding branches, and parameter tracks are generated; precisely grinding according to a segmented parameter track, reducing the cutting depth and the speed in a high potential energy area, and increasing the speed in a low potential energy area; after grinding, obtaining a three-dimensional shape, performing error analysis and energy spectrum generation, and mapping to risk partition coding; and according to the error energy and the energy field, the grinding priority is judged, and high-priority partitions are selectively ground and remeasured. According to the method, the visual potential energy field is constructed and the improved double-flow neural network is fused, so that accurate positioning, self-adaptive grinding control and high-precision micro-area grinding of the diamond microstructure are realized.

The invention provides an imaging device and method based on a diamond NV color center, and the device comprises a diamond containing the NV color center, an objective lens assembly, an optical detection module, a displacement platform, and a microwave module. The objective lens assembly comprises an objective lens turntable, and an objective lens and a suction tube which are mounted on the objective lens turntable, the objective lens turntable can switch the objective lens or the suction tube to a working position, and the suction tube is used for introducing negative pressure; the displacement platform is located below the objective lens assembly, and the upper surface of the displacement platform is used for placing a to-be-tested piece and can regulate and control the position of the to-be-tested piece; the diamond is used for being placed on a to-be-tested piece and located below the working position of the objective lens assembly, when the suction pipe is switched to the working position, an opening in the lower end of the suction pipe faces the diamond, and the diamond can be adsorbed or released through negative pressure in the control pipe. And the implementation mode is simple and convenient, the use of other auxiliary equipment is reduced, the occupied space is simplified, and accurate and efficient operation of adsorbing and releasing the diamond can be ensured. By using the device, multiple times of imaging scanning of a large-size to-be-measured piece can be realized.

The invention relates to a preparation method of a diamond-copper composite heat sink with a high-heat-conduction passage. According to the method, a diamond / copper composite heat conduction framework with a bionic fractal structure is prepared through an extrusion type additive manufacturing technology, and then the diamond / copper composite heat sink with high heat conduction, high communication and high density is obtained through degreasing, sintering and infiltration processes. The problem that a complex structure is difficult to achieve through a traditional processing method is solved, meanwhile, a high-speed heat conduction channel with preferred orientation is constructed in the heat sink, and therefore the heat dissipation performance of the composite material is remarkably improved, and the composite material is suitable for heat management of high-power electronic equipment.

A glass panel is provided, including a glass panel substrate and a composite film layer disposed on a surface of the glass panel substrate. The composite film layer includes a first base layer, a first barrier layer, a diamond-like carbon film layer, a second barrier layer, a second base layer, and an anti-fingerprint layer that are sequentially stacked. The glass panel is coated with the composite film layer having a specific structure on the surface of the glass panel substrate, so that the glass panel can have high Mohs hardness, to improve a scratch resistance capability of the glass panel. In addition, the composite film layer has strong adhesion to the surface of the substrate and is not easily detached. The composite film layer can further reduce a color difference before and after coating to a specific extent, and increase transmittance.

A device package and heatsink assembly includes a device package containing one or more logic elements and one or more other integrated circuit devices mounted to a package substrate and one or more heatsinks. The other integrated circuit devices are higher above the package substrate's surface than the logic elements. Each heatsink contains chambers for a fluid heat transfer medium. A surface of the logic elements is thermally coupled to the fluid. A semiconductor chip package fabrication method includes bonding a diamond-containing dielet to a semiconductor logic die to form a logic die structure; mounting the logic die structure to a package substrate with the logic die sandwiched between the dielet and the substrate, exposing a surface of the dielet; and mounting one or more other integrated circuit devices to the package substrate. The other integrated circuit devices are higher above the package substrate's surface than the logic die structure.

The invention relates to a high-power dual-wavelength erbium-doped solid laser, and belongs to the technical field of laser. The high-power dual-wavelength erbium-doped solid laser comprises a pumping source, a pumping cavity, a diamond, a heat sink, a first resonant cavity and a second resonant cavity, the first resonant cavity comprises a first erbium-doped YAG slice crystal, and the second resonant cavity comprises a second erbium-doped YAG slice crystal. The first erbium-doped YAG sheet crystal is used for generating 1.64 [mu] m laser which oscillates back and forth in a back-and-forth light path provided by the first resonant cavity; and the second erbium-doped YAG sheet crystal is used for generating 2.94 [mu] m laser which oscillates back and forth in a back-and-forth light path provided by the second resonant cavity. According to the high-power dual-wavelength erbium-doped solid laser provided by the invention, synchronous output of 1.64 mu m and 2.94 mu m dual-wavelength laser is realized, the multifunctionality and medical adaptability of the laser are enhanced, and multi-type treatment requirements of soft tissues and hard tissues can be met at the same time.

The invention relates to a diamond-like carbon coating and a preparation method thereof, and belongs to the technical field of coatings. The preparation is carried out in a closed field unbalanced magnetron sputtering system, and the system is at least provided with a titanium target, a graphite target and a linear ion source; the preparation method comprises the following steps: pretreating a base material, removing surface moisture, transferring the base material into a vacuum chamber, and carrying out ion cleaning and activation; adjusting bias voltage, then turning on a titanium target power supply, cleaning a target surface, depositing a gradient layer, turning off the titanium target power supply, turning on a graphite target power supply to carry out hydrogen-free deposition, and after deposition is finished, carrying out furnace cooling in a vacuum environment. According to the diamond-like carbon coating provided by the invention, the graphite target material is adopted, under the condition that hydrogen-containing gas and a metal transition layer are not introduced, a closed field unbalanced magnetron sputtering technology is combined with linear ion source auxiliary deposition, the DLC coating with excellent biocompatibility is prepared, and the problem of biotoxicity caused by element dissolution is greatly reduced.

A diamond magneto-optical sensor includes: a diamond that includes a color center with an electronic spin and is irradiated with excitation light, and an irradiation unit that irradiates the diamond with the excitation light of the color center and electromagnetic waves for magnetic resonance, wherein the irradiation unit receives modulated light having been subjected to amplitude modulation, and a modulation frequency of the modulated light is included in a microwave frequency band.

The invention provides an angular displacement measurement method and system based on diamond quantum sensing, and relates to the field of quantum sensing, and the method comprises the steps: taking a diamond NV color center as a probe, placing the probe in a magnetic field and a static magnetic field which rotate at a constant speed, and carrying out the coaxial rotation with a to-be-measured object, the diamond NV color center of the system is measured by adopting continuous light excitation and microwave radiation based on diamond quantum sensing angular displacement; acquiring a first fluorescence signal emitted by the diamond NV color center at a first moment, and outputting a corresponding first traveling wave signal; acquiring a second fluorescence signal emitted by the diamond NV color center at a second moment, and outputting a corresponding second traveling wave signal; and based on the phase difference between the first traveling wave signal and the second traveling wave signal, determining the angular displacement value of the rotation of the object to be measured of the angular displacement measurement system based on diamond quantum sensing. According to the embodiment of the invention, the diamond NV color center is highly sensitive to the change of the magnetic field, and the measurement precision of angular displacement can be improved.

A sensor chip structure (600) design based on a solid-state quantum spin sensing system, a manufacturing method, and a supporting related device. The sensor chip structure (600) is a diamond-based magnetic field and temperature sensing chip manufactured on the basis of a micro-nano processing technique, and comprises: a microwave radiation structure, a diamond NV center material, a laser diode, a heat dissipation structure, an optical filter (7), and a photodetector (6) which are manufactured on an insulating substrate.

The invention belongs to the technical field of additive manufacturing, and particularly relates to a diamond / copper radiator manufacturing method based on 3D printing, and the diamond / copper radiator manufacturing method comprises the steps that diamond / copper composite powder is prepared, and the composite powder comprises diamond particles with nano alloying elements attached to the surfaces and spherical copper powder; and under shielding gas, green laser with the wavelength of 532 nm is adopted for conducting selective laser melting scanning on the composite powder, meanwhile, high-frequency ultrasonic vibration is applied to a molten pool in a laser acting area, and a diamond / copper composite material radiator green body is formed through layer-by-layer powder laying, scanning melting, ultrasonic assistance and layer-by-layer accumulation. Copper matrix crystal grains are refined through ultrasonic energy, residual stress in the printing process is reduced, generation of microcracks is effectively restrained, the mechanical property and reliability of a workpiece are improved, the high absorptivity of green laser to copper and the technical advantages of 3D printing are combined, and high-quality 3D printing is achieved. And the radiator with fine structures such as complex three-dimensional micro-channels and ultrathin fins can be integrally manufactured.

The invention relates to the technical field of vapor deposition coatings, in particular to a high-wear-resistance diamond coating cutting tool and a preparation method thereof. The cutting tool sequentially comprises a base body, a transition layer, a diamond composite coating and an anti-oxidation protection layer from inside to outside, all the layer structures achieve a synergistic effect, and the technical effects of high bonding strength, high abrasion resistance and high-temperature stability are achieved. According to the preparation method, through matrix surface modification, gradient transition layer design and a multi-interface synergistic enhancement system constructed by a micro-nano composite coating structure, and in combination with precise regulation and control of a CVD preparation process, whole-process optimization from interface bonding to coating performance is realized, and the bonding strength, the wear resistance, the high-temperature stability and the preparation process consistency of the coating are remarkably improved.

The application discloses a graphene-diamond composite coating and a preparation method and application thereof, and belongs to the technical field of materials. The graphene-diamond composite coating comprises a diamond coating and a graphene coating; graphene sp2 bond structure is covalently combined with diamond sp3 bond structure; and the graphene coating has a graphene structure with non-parallel growth mainly in a vertical direction. The graphene-diamond composite coating has small lattice mismatch between the diamond and the graphene, avoids volume expansion caused in a friction heat process, and has the advantages that the diamond coating can provide a support layer for the graphene, forms super-strong C-C covalent bonds at an interface, and significantly improves the adhesion strength of the graphene; the graphene can avoid brittle fracture of the diamond, and significantly improves the lubricating performance of the surface of the diamond coating. The composite coating has better wear resistance, a low friction coefficient and excellent oxidation resistance, and can remain stable under high-temperature and high-load working conditions, so that the service life and processing efficiency of wear-resistant parts are improved.

The invention provides an alternating magnetic field quantum sensing detection device and method, and relates to the technical field of alternating magnetic field quantum sensors. The device comprises a sensitive module which comprises a diamond and a diamond NV color center located in the diamond; the microwave module is used for generating a target microwave signal; the light path module comprises a laser, an optical fiber and a photoelectric detector; the laser is arranged at one end of the fiber; the diamond is arranged at the other end of the fiber; a target laser signal generated by the laser is transmitted to the diamond through the optical fiber, so that the NV color center of the diamond generates red fluorescence under the action of the target laser signal and the target microwave signal; the photoelectric detector is used for collecting red fluorescence output from one end of the optical fiber; and the signal processing module is connected with the photoelectric detector and is used for converting the red fluorescence from an optical signal to an electric signal and determining the magnetic field environment of the position where the sensitive module is located according to the converted electric signal.

The invention discloses a modular high-frequency vibration deep hole drilling device, which relates to the technical field of cutting numerical control blades, and comprises a driving assembly, a sleeve and a split type tool bit assembly which are connected in sequence, the split type tool bit assembly comprises a hard alloy base body and a composite cutting part with the surface coated with a diamond coating, a spiral chip groove is formed in the surface of the composite cutting part, one end of the base body and the composite cutting part are of an integrally-formed structure, a piezoelectric ceramic vibrator is embedded in the other end of the base body, and the piezoelectric ceramic vibrator is connected with the hard alloy base body. The base body is of a detachable two-section type and is formed by nesting through a thread locking mechanism. The tool bit and the base body can be conveniently and rapidly disassembled and assembled.

A nanoscale temperature detector comprising a diamond sensing probe (1) having a lateral dimension of at least 200 nanometers and having a sensing tip (2) with a radius of curvature (R) of less than 100 nanometers, less than 10 nanometers or less than 1 nanometer and a plurality of color centers (5) showing temperature sensitive features in the emission count rate. The diamond sensing probe (1) has a lateral dimension of at least 200 nanometers and is connected to a detector system (13) by a mounting structure (6). A thermal isolation barrier (3) thermally separates the sensing probe (1) from the detector system (13).

The invention belongs to the technical field of grinding wheel abrasives, and particularly relates to a diamond porous microsphere, a grinding wheel abrasive and a preparation method and application thereof. The preparation raw materials of the diamond porous microspheres comprise mixed powder, a binder and water, the mixed powder comprises a first ceramic bond, diamond and a pore forming agent. The first ceramic bond, the diamond and the pore forming agent are used as raw materials for preparing the diamond porous microspheres, the diamond porous microspheres have natural pores and prefabricated spherical pores, the porosity is high, and the self-sharpening performance of the grinding wheel grinding material can be improved; the grinding wheel abrasive material is prepared through secondary air degreasing sintering of the diamond porous microspheres, a new three-dimensional pore structure is formed among the naturally stacked diamond porous microspheres, the grinding wheel abrasive material with a'natural pore + prefabricated spherical pore + stacked pore 'multi-stage pore structure is obtained, the cooling, lubricating and chip removal effects of a grinding wheel can be greatly improved, and the service life of the grinding wheel is prolonged. Therefore, the grinding performance and the service life of the grinding wheel are improved.

The application relates to a diamond compact, which comprises a tooth sleeve, the cross section of the tooth sleeve is arranged in a circular ring, a blocking disc is coaxially fixed to an opening of one end of the tooth sleeve, a tooth lock body is fixed to the inner side of the blocking disc, a tooth body is provided with a lock groove at one end, a tooth crown is fixed to the other end, the tooth body is installed in the tooth sleeve, the tooth lock body is axially locked with the lock groove, and the tooth body can rotate relative to the tooth lock body. The tooth body can rotate around the tooth sleeve, the position of the tooth crown in contact with the rock is continuously changed, the abrasion of the same position of the tooth crown is reduced, the probability of sudden rupture of the tooth crown is greatly reduced, the cutting edge can be kept sharp for a long time, the service life of the compact is prolonged, and the drilling speed and footage of the PDC drill bit are improved.

The utility model relates to steel lining plastic rotary wet process purification equipment, which comprises a cylinder and a base, the cylinder is horizontally and movably arranged on the base, the cylinder comprises a base layer, a transition layer and a functional layer from outside to inside, the base layer is made of steel, the transition layer is a diamond steel mesh and is fixedly welded on the inner side of the base layer, and the functional layer is arranged on the base layer. A transition layer is arranged in the cylinder body, the functional layer covers the surface of the transition layer, a guide plate is further arranged in the cylinder body, the guide plate comprises a base body layer, the transition layer and the functional layer, the guide plate and the cylinder body are integrally formed, the guide plate is of a sectional type, the guide plate is spirally arranged in the circumferential direction of the cylinder body, and every two adjacent guide plates are designed in a staggered mode. The barrel of the composite structure is long-acting and corrosion-resistant, and the integrated guide plate is integrated in the barrel, so that the material mixing efficiency is effectively improved.

The invention discloses a three-dimensional micro-LED chip with a novel heat dissipation structure and a dielectric layer manufacturing method. The chip comprises a silicon substrate, a red micro-led, a green micro-led and a blue micro-led, the silicon substrate, the red micro-led, the green micro-led and the blue micro-led are sequentially stacked, and a dielectric layer is arranged between any two of the silicon substrate, the red micro-led, the green micro-led and the blue micro-led; a plurality of copper-plated through holes are formed in the dielectric layer, and the conductive circuits of the red micro-LED, the green micro-LED and the blue micro-LED penetrate through the copper-plated through holes and then are connected with the silicon substrate; the method comprises the following steps: patterning a diamond film and plating copper on a through hole in manners of etching, electroplating and the like, so as to manufacture a light-transmitting and heat-conducting dielectric layer; through the stacking structure of the silicon substrate and the three-color micro-LEDs and the design of the copper-plated through holes in the dielectric layer, heat conduction and electric conduction channels are formed in the vertical direction, meanwhile, efficient heat dissipation and electrical isolation are achieved through the diamond film, the problems that in a traditional scheme, heat dissipation paths are insufficient, materials are contradicted, and the light emitting rate is reduced are solved, and the light emitting efficiency is improved. The LED lamp has the advantages of improving a vertical heat dissipation path, giving consideration to electrical isolation and thermal conductivity and improving light emitting efficiency.

A coated cemented carbide includes: a substrate consisting of a cemented carbide; and a diamond layer disposed directly on at least a portion of the substrate, wherein the cemented carbide includes a tungsten carbide grain and cobalt, the substrate includes an outer region and an inner region, the outer region having a gradient composition in which a content ratio of the cobalt is increased from an interface between the substrate and the diamond layer toward an inner portion of the substrate, the inner region being located on the inner portion side of the substrate with respect to the outer region, the content ratio of the cobalt in the inner region is 2 mass % or more, and a percentage (T2 / T1)×100 of a standard deviation T2 μm of a thickness of the outer region with respect to an average thickness T1 μm of the outer region is 30% or less.

This invention relates to the field of drilling equipment technology, specifically to a diamond-coated drill bit, comprising a drill bit connecting rod and a drill bit; water passage holes are provided inside the drill bit connecting rod and inside the drill bit, a first water outlet device is provided at the top of the water passage holes, and the first water outlet device is provided with a plurality of first water outlet holes; a second water outlet device is provided inside the water passage holes; the second water outlet device includes a screw, a plunger, and a turntable; the turntable is rotatably connected to the inner wall of the drill bit connecting rod in the horizontal direction, and the bottom of the turntable is provided with serrations that mesh with a gear, the gear being mounted on a rotating rod; the screw is threadedly connected to the turntable, and one end of the screw is connected to a mounting plate, the mounting plate being provided with a vertical plunger that can be inserted into the first water outlet hole; the plunger has a hollow structure, with a second water outlet hole on its upper side and its lower end communicating with the water passage hole. The first and second water outlet devices of this invention provide dual protection for the cooling of the drill bit, and also prevent the water outlet holes from becoming blocked.