3488 results about "Blind hole" patented technology

The invention discloses a polishing device and method for removing burrs at an outer port of a blind hole of a circuit board, and relates to the technical field of polishing burrs at an outer port of an inner blind hole of the circuit board, the polishing device comprises a guide column, a mounting seat and a lifting oil cylinder which are sequentially and fixedly arranged on a bottom plate from left to right, and a positioning groove is formed in the top surface of the mounting seat; two polishing mechanisms are arranged on the lifting plate, the polishing mechanism located on the left side comprises a center rod welded to the bottom surface of the lifting plate, a sleeve welded to the outer cylindrical surface of the center rod and a driven gear rotationally installed outside the sleeve, and a plugging head is fixedly arranged at the bottom of the center rod; the driven gear of the grinding mechanism on the left side is meshed with the driven gear of the grinding mechanism on the right side, and the driven gear of the grinding mechanism on the right side is further connected with a driving assembly. The grinding device has the beneficial effects that the grinding quality is greatly improved, and the grinding efficiency is greatly improved.

The invention discloses a large-deflection deformation flexible shaft hole assembly method and device based on tactile perception, storage equipment and a program product, and belongs to the technical field of robot assembly. The problem that an existing assembling method does not consider the influence of non-linear large-deflection deformation of the flexible shaft on the assembling precision of the shaft hole is solved. Based on pressure distribution data fed back by the tactile sensor, the deformation condition of the shaft can be estimated and adjusted, the flexible shaft workpiece makes effective contact with the rigid plane where the target hole is located, whether the shaft passes through the hole or not is monitored in real time in the blind hole searching process, and after the hole is searched, the mechanical arm is controlled to automatically align the shaft hole, so that the hole searching efficiency is improved. And the shaft insertion action is completed. The device is mainly used for shaft hole assembly of the large-deflection deformation flexible shaft workpiece.

The invention provides an automobile balance block die-casting mould, which comprises a push cylinder, an upper mould base, an upper mould, a lower mould and a lower mould base, wherein the upper mould is arranged on the lower end of the upper mould base; the lower mould is arranged on the upper end of the lower mould base; the upper mould base is connected to the upper end of the lower mould base through a guide pillar; cooling holes are formed in the upper end face and the lower end face of the upper mould base in a penetrating way; a guide sleeve is connected onto each cooling hole. According to the automobile balance block die-casting mould, each cooling channel is communicated with a blind hole, each blind hole is communicated with a cooling hole, and each guide sleeve is arranged on the corresponding cooling hole, so that the mould can be cooled conveniently and quickly through injecting cooling water in the guide sleeves; the cooling channels are arranged at equal distances and in parallel, so that cooling is uniform, the cooling effect can be further improved, and the product quality is improved; the automobile balance block die-casting mould is simple in structure, convenient to operate, and good in cooling effect.

The invention relates to a pre-compensation flexible assembling and adjusting mechanism of a large-diameter transmission reflector. The pre-compensation flexible assembling and adjusting mechanism comprises the large-diameter transmission reflector, a glue joint mandrel, an isolation telecentric flexible hinge, an isolation plate, a hooke flexible hinge, an adjusting flexible branch chain, an anti-rotation flexible branch chain, a back plate and a driving assembly. The large-aperture transmission reflector is provided with three blind holes for glue joint, and is connected with the isolation plate through three groups of glue joint mandrels and isolation telecentric flexible hinges, so that isolation of load deformation interference of the isolation plate is realized; the driving ends of the two adjusting flexible branch chains are correspondingly connected with two driving assemblies installed on the back plate, and the connecting ends of the adjusting flexible branch chains are connected with the isolation plate. One ends of the Hooke flexible hinges and the anti-rotation flexible branch chains are connected with the isolation plate, and the other ends are connected with the back plate; the device has the advantages of being simple in structural form, stable in movement and high in precision, meanwhile, the return clearance caused by axial load reversing under heavy loads can be avoided, the additional surface shape caused by assembling and adjusting stress is effectively isolated, and the additional surface shape caused by gravity is compensated.

A crate has an arrangement of fastening holes for mounting crate components, as well as various mounts and accessories to the outer and inner surface of the crate. The fastening holes are blind holes that do not breach, penetrate or pass-through panels defining the crate so that the crate remains watertight or sealed or leakproof. The fastening holes may be arranged to provide points of intersection for rules or guides that define a grid to aid in mounting components, mounts and accessories at desired locations. Outer fastening holes are provided in a repeating pattern and superimposed on inner fastening holes. The fastening holes provide for ease of customization without the need for drilling.

The embodiment of the invention discloses a load self-sensing tunneling cutter and a cutter monitoring method, belongs to the technical field of cutter monitoring, and solves the problem that the actual working condition of the tunneling cutter is difficult to accurately analyze since a non-integrated packaged sensing device cannot be provided with various types of sensing elements due to spatial size limitation and can only monitor a single parameter. The tool comprises a tool body, a multi-source sensor integrated module and an upper computer. An axial center blind hole is formed in the axis of a cutter shaft of the cutter body; a protective shell of the multi-source sensor integrated module is attached to the inner wall of the axial center blind hole, and the multi-source sensor integrated module comprises a multi-source sensor module, a self-generating module and a signal transmission module; the multi-source sensor integrated module is in wireless connection with the upper computer, and the multi-source sensor integrated module is used for transmitting the collected cutter multi-source state data to the upper computer, so that the upper computer analyzes the cutter multi-source state data, and monitoring of the load self-sensing tunneling cutter is achieved.

The present application discloses a coaxially integrated servo motor pump with integrated drive control functions, comprising a motor pump housing, a controller housing, and an electrical connector. The motor pump housing is provided with a blind hole, a first cavity for accommodating a plunger pump assembly, and a second cavity for accommodating a servo motor assembly, wherein the plunger pump assembly and the servo motor assembly are connected via a rotating shaft. The controller housing is connected to one end of the motor pump housing, and a drive controller is provided within the controller housing. The blind hole communicates with the second cavity, and the electrical connector is sealed and connected to the blind hole, and the electrical connector is electrically connected to the servo motor assembly and the drive controller. The distribution plate and the sealing assembly are respectively sealed with both ends of the motor pump housing. Cooling is achieved through a cooling oil channel, which connects from one end of the motor pump housing near the plunger pump assembly to the second cavity and then divides into two paths, one path passing through the center of the rotating shaft, and the other path connecting to the first cavity and passing through the distribution plate. The coaxial integration of the drive control functions is achieved, and the cooling effect is good.

The invention discloses a manufacturing method of a multi-layer thermoelectric separation buried copper plate, which comprises the steps of preparing an inner-layer core plate, slotting and burying a copper block, roughly drilling a through hole, filling resin, manufacturing a secondary outer-layer pattern, preparing an outer-layer core plate, drilling a conductive hole and a heat dissipation hole and the like, and is characterized in that the copper block is divided into a heat dissipation area and a conductive area; thermoelectric separation is achieved through the design of independent through holes and blind holes, components needing to conduct electricity and components needing to conduct heat can be added on the copper block at the same time, and meanwhile efficient heat conduction and stable signal transmission are achieved and do not interfere with each other. Due to the partition design, the copper block is not only used for heat dissipation, but also used for electric conduction, the utilization rate of the copper block is improved, the design area of the PCB is reduced, and the development requirements of high-density and miniaturized electronic equipment are met.

The invention discloses a laser drilling method and system for a heterogeneous laminated material. The laser drilling method comprises the steps that a first acoustic emission sensor and a second acoustic emission sensor are arranged; in the blind hole forming process, the depth of the blind hole is obtained through a second acoustic emission sensor; determining the laying angle of the carbon fiber prepreg cloth according to the depth of the blind hole, calling a first acoustic emission sensor, and collecting an acoustic emission signal; judging whether the metal layer is exposed or not according to an acoustic emission signal acquired by a first acoustic emission sensor, and if the metal layer is considered to be exposed, acquiring a spectral signal in real time through a laser-induced breakdown spectroscopy detection system; and outputting the laser beam again, and controlling the laser beam to perform layer-by-layer scanning. The position of the metal layer in the blind hole machining process is preliminarily positioned based on the acoustic emission sensor system, then LIBS is used for accurately positioning distribution of the metal layer, laser process parameters are fed back and adjusted, and the spiral track during laser scanning is adjusted, so that the blind hole machining quality is improved.

The invention relates to an ultrasonic transducer capable of realizing a high torsional vibration-longitudinal vibration amplitude ratio and a design method thereof. The ultrasonic transducer comprises a piezoelectric ceramic vibrator 3, an amplitude-change pole 2 and a tool head 1 which are connected in sequence, the shape of the amplitude-change pole is formed by rotating a specific geometric curve around the axis. The interior of the amplitude-change pole is of a cavity structure 5, the wall thickness distribution of the amplitude-change pole is adjustable, the cavity structure is a through hole or a blind hole, and the shape of the cavity structure is an equal-diameter cavity extending along the axis or a special-shaped cavity formed by rotating a specific geometric curve around the axis. By optimizing the internal cavity structure and the wall thickness distribution and adjusting the amplitude proportion between torsional vibration and longitudinal vibration, the longitudinal vibration of the transducer can be converted into longitudinal torsional vibration, so that the transducer has both longitudinal vibration and torsional vibration. Due to the unique cavity type structure in the amplitude-change pole, the amplitude ratio of generated torsional vibration to longitudinal vibration can be larger, the ultrasonic effect with the high torsional vibration-longitudinal vibration amplitude ratio can be generated, and vibration output with the high torsional vibration-longitudinal vibration amplitude ratio can be achieved.

The invention relates to the technical field of gas purity detection, in particular to a gas source purity detection device and a gallium nitride production system. The gas source purity detection device comprises a main pipe body, a supporting piece, a control ring, a moving arm and a concentration sensor. The main pipe body is used for being connected with an air source pipeline. The control ring is rotationally matched with the supporting piece and driven by the driver, and the control ring and the outer wall face are rotationally sealed. A gas collecting groove is formed in the inner ring wall of the control ring. The supporting piece is provided with a mounting blind hole, and the moving arm is slidably matched with the mounting blind hole and is slidably sealed. A first elastic piece is connected between the moving arm and the hole bottom wall of the mounting blind hole in an abutting mode. The concentration sensor is arranged on the outer side wall of the moving arm. When the control ring rotates, the gas collecting groove can periodically communicate with the main pipe body and can also periodically move to the moving arm. The gas source purity can be continuously and accurately detected for a longer time, and automatic calibration is achieved while purity detection is conducted.

The invention discloses a circuit board X-shaped hole processing control method, system and device and a medium. The method comprises the following steps: acquiring a first image of a first surface blind hole after a preset depth h'is processed for the Nth time; acquiring first hole offset data according to the first image; according to the first hole offset data, first hole machining correction parameters are obtained so as to guide machining of the first face blind hole; acquiring a second image of the blind hole in the second surface after the preset depth h'is processed for the Nth time; acquiring second hole offset data according to the second image; according to the second hole offset data, second hole machining correction parameters are obtained so as to guide machining of a second face blind hole; the X-shaped hole detection method and device have the advantages that the hole machining quality can be effectively controlled, and the detection accuracy is high.

The invention relates to the technical field of hemispherical harmonic oscillator assembly, in particular to a welding method and device for an assembled hemispherical harmonic oscillator, and the device comprises a vibration welding platform and a clamping assembly located above the vibration welding platform; the vibration welding platform is used for bearing the sensitive base and providing a thermal field and a vibration field needed by welding, and the clamping assembly is used for clamping the center shaft and sending the center shaft into a center hole of the base. A heating unit and a composite vibration ultrasonic transducer are arranged in the platform, and the platform is configured to apply high-frequency vibration formed by superposition of vertical longitudinal waves and horizontal torsional waves to the base. The high-frequency vibration thixotropic effect is used for reducing the viscosity of the molten solder, the ultrasonic cavitation effect is used for forcibly discharging bubbles at the bottom of the blind hole, and the sound radiation pressure generated by the vibration standing wave field is used for driving the center shaft to achieve friction-free self-centering in the hole. According to the device, the problems of air bolt pseudo soldering and rigid assembly clamping stagnation in the traditional process are solved, and the assembly coaxiality and the connection strength of the harmonic oscillator are remarkably improved.

The invention discloses a special-shaped pipe quality evaluation method, system and equipment based on industrial Internet of Things, and relates to the technical field of pipe quality monitoring, and the method comprises the following steps: respectively obtaining end face images of two ends of a corresponding target special-shaped pipe; wherein the cross section of the target special-shaped pipe is oval, a strip-shaped groove is formed in the outer wall of the target special-shaped pipe in the axial direction of the target special-shaped pipe, and a plurality of blind holes are formed in the outer wall of the target special-shaped pipe in the axial direction of the target special-shaped pipe; according to the two end face images, the bottom face gradient of the strip-shaped groove is obtained; obtaining the radial deformation degree of the target special-shaped pipe according to any end face image; acquiring pressure data corresponding to the plurality of blind holes, and acquiring the depth non-standard rate of the blind holes according to the plurality of pressure data; according to the bottom surface gradient, the radial deformation degree and the depth non-standard rate, obtaining a quality evaluation score of the target special pipe; according to the quality evaluation score, whether the target special-shaped pipe is qualified or not is judged, and the method has the advantage that the quality detection accuracy of the special-shaped steel is improved.

The invention discloses a preparation method of a metalized vertical glass through hole. The preparation method comprises the following steps: modifying a target area of a glass substrate by adopting a laser irradiation method to form a denatured area; forming a first metal layer on the glass substrate in a sputtering manner; ablating the first metal layer corresponding to the denatured region by adopting an ultraviolet radiation method so as to expose the denatured region; etching the denaturation region by using a corrosive liquid to form a first blind hole; cleaning and drying the glass substrate; forming a second metal layer on the glass substrate in a sputtering manner; ablating the second metal layer at the bottom of the first blind hole by adopting an ultraviolet radiation method; etching the first blind hole by using a corrosive liquid to form a second blind hole; cleaning and drying the glass substrate; and repeating the steps (6)-(9) to obtain the metalized vertical glass through hole. According to the preparation method, the glass through hole with high depth-diameter ratio and good perpendicularity can be prepared, and meanwhile, the metal layer can be stably and uniformly attached to the inner wall of the glass through hole.

The invention discloses a high-length-diameter-ratio heterogeneous electron carrier sheet stack structure and a manufacturing method thereof, and relates to the technical field of substrate manufacturing. Comprising an upper plate, the lowest layer of which is provided with a metal conductive column; a through first through hole is formed in the lower plate; the dielectric layer is provided with a pre-drilling hole; wherein the line width, the line distance, the line thickness and the welding pad thickness of the upper plate are smaller than the line width, the line distance, the line thickness and the welding pad thickness of the lower plate; the layer number of the upper plate is greater than that of the lower plate; the diameter of the metal conductive column is smaller than that of the first through hole, and the diameter of the first through hole is smaller than that of the pre-drilled hole; a hole is formed in the dielectric layer on the lower layer of the lower plate, and the hole exposes the end face of the metal conductive column and then forms a blind hole; through the size matching of the metal conductive columns, the through holes and the pre-drilled holes and the structural design of the blind holes, collaborative optimization of high-density interconnection and structural stability is achieved, and the method has the advantages that the depth-to-width ratio is increased, the structural stability is enhanced, the thermal management efficiency is optimized, and interface defects are reduced.

A container with detachable suction straw is disclosed, including a container and a lid assembly covering the container. The lid assembly comprises walls defining a recess, guiding grooves that facilitate assembly and easy removal of the detachable sealed straw, a rotating axis concave joint, and guiding grooves where the detachable sealed straw and the elastomeric seal are housed. The detachable sealed straw contains positioning balls and a spout, the spout is designed to have a body that rotates on the concave surface of the rotating axis joint of the lid assembly, a passage for the flow of contents within the container, a spout lead-in portion, a blind hole for assembling the positioning balls, and a handle. The elastomeric seal fits tightly into the lid assembly.

The utility model discloses a height detection tool for a spherical screw, which comprises a laser tracker and a detection sleeve, the detection sleeve is provided with a central blind hole, the spherical screw can be inserted into the central blind hole, and the outer end face of the closed end of the detection sleeve is provided with a ball placing groove for placing a target ball. By using the detection tool, only the first spherical screw needs to be subjected to multi-point measurement, then other spherical screws directly adjust the height according to the coordinates of the target sphere, multi-point measurement does not need to be carried out one by one, time consumption is low, operation is convenient, stability is good, working efficiency is improved, and the problem that the efficiency of detecting the height of the spherical screw is low is solved.

The invention provides a glass substrate, a preparation method thereof and a chip packaging structure. The glass substrate comprises a glass substrate, at least one first hole section and at least one second hole section are arranged in the glass substrate, and the first hole section is communicated with the second hole section; the glass substrate has a first surface and a second surface which are oppositely arranged, an opening of the first hole section is located in the first surface, and an opening of the second hole section is located in the second surface; the glass substrate is made of glass; the first seed layer is located in the first hole section, a first blind hole is defined by the first seed layer, and an opening of the first blind hole faces the side where the first surface is located; the first conductive part is located in the first blind hole; and the second conductive part is positioned in the second hole section.

A supporting device for a punching bag includes a hollow tubular pillar; a connector; a flange body; a rubber shock absorber; and a support tray. The connector includes a first end and a second end; the second end is bigger than the first end in diameter; the first end is disposed into the hollow tubular pillar. The connector includes a first connection hole, and the hollow tubular pillar includes a second connection hole. The connector and the hollow tubular pillar are fixed by a locking screw through the first connection hole and the second connection hole. The flange body includes a central blind hole, and the second end of the connector is disposed into the central blind hole. The flange body further includes a radial base. The circumference of the radial base includes a plurality of mounting holes configured to receive a counterweight unit to stabilize the supporting device.

The invention relates to the technical field of chip embedded module packaging, in particular to a blind hole processing method and a substrate. An embedded chip substrate is prepared, a chip is embedded in the embedded chip substrate, and the chip is covered with an insulating layer; determining a hole opening position on the insulating layer, wherein the hole opening position corresponds to the embedding position of the chip on the chip embedding substrate; laser ablation is conducted on the hole opening position through ultraviolet laser according to preset laser parameters, so that an initial blind hole is machined in the hole opening position; and performing residue removal processing on the initial blind hole through plasma equipment to obtain a target blind hole. Therefore, the initial blind hole is machined in the hole opening position through the ultraviolet laser, molecular bonds can be directly destroyed, cold ablation is achieved and thermal damage is reduced on the basis of the characteristic that photon energy of the ultraviolet laser is high, meanwhile, the target blind hole with the smooth hole wall can be obtained by conducting residue removing treatment on the initial blind hole through plasma equipment, and the hole opening precision is improved. Compared with the prior art, high-precision and high-quality machining of the blind hole is achieved.

The invention discloses a method for manufacturing a surface flexible layer rigid-flexible combined board for an intelligent video module, which comprises the following steps of: taking a double-sided flexible copper-clad plate, and windowing a first surface copper layer corresponding to a first via hole to form a flexible core board; taking the first cover film and windowing corresponding to the first via hole to form a windowing cover film; correspondingly attaching the windowing covering film to one side of the second copper layer of the flexible core plate to form a covering film core plate; taking a prepreg, manufacturing a glue-blocking film corresponding to a flexible area of the prepreg, forming a glue-blocking prepreg, and manufacturing a rigid core plate; sequentially stacking and laminating the plates from top to bottom, enabling the glue blocking film to face the covering film core plate, then manufacturing a through hole in the rigid region, performing laser ablation on an insulating medium layer corresponding to a copper layer windowing pattern, electroplating, performing uncovering processing, removing a second copper layer at the bottom of a blind hole, forming a first via hole, and performing molding to form the rigid-flexible combined plate. The metallization process of the flexible area and the metallization process of the rigid area are combined into one-time electroplating, so that the consistency of the thickness of a copper plating layer is ensured.

A system for cooling plungers which operate in high pressure pumps. The system uses a plunger having a blind bore formed therein. The blind bore may receive a number of different objects, some of which are fixed to the plunger. A heat exchanger may be installed within the blind bore. The heat exchanger may have internal passages or openings which allow for the circulation of fluid within the blind bore, thus cooling the plunger. The heat exchanger may be formed of a material having a higher thermal conductivity than the material used to form the plunger. This allows the heat exchanger to cool the plunger more effectively than if the plunger were solid or filled with an empty air space. The heat exchanger may be sealed within the bore of the plunger, or exposed.

A fiber optic ferrule has a set of optical fiber support structures that includes a slotted blind hole to assist in the application of epoxy to the optical fibers and fiber optic ferrule. There is an entrance surface within the slotted blind holes against which the optical fibers may be disposed. The slotted blind holes may be formed within a portion of a first wall and a second wall adjacent a front end of the fiber optic ferrule.

The invention discloses a self-tightening spring (1) which is characterized in that a bolt hook (2) is arranged at one end of a tension spring main body (24) and is linear, and a nut hook (3) is arranged at the other end of the tension spring main body (24) and is an L-shaped inverted-inserting hook. The matched bolt (6) is characterized in that the tail end of a common bolt is provided with a bolt hook hole (4), and the bolt hook hole (4) is a radial through hole into which a bolt hook (2) can be inserted. The nut is characterized in that at least one nut hook hole (5) and a blind hole parallel to the hexagonal side face and the end face of the nut at the same time are formed in the hexagonal side face of a common nut. The invention further discloses an anti-loosening thread pair (25), which is characterized in that the bolt hook (2) is inserted into the bolt hook hole (4), the nut hook (3) is lengthened and inversely inserted into the nut hook hole (5), the tension spring body (24) is screwed around the screw rod (7) to tighten the nut (9) and the bolt (6), energy is continuously compensated, loosening displacement of the thread pair is self-tightened, and the purpose of never loosening is achieved.

The invention relates to the technical field of hard rock drilling construction, in particular to a rock breaking hob, a shield tunneling machine cutterhead and a shield tunneling machine. The rock breaking hob comprises a cutter shaft, an annular cutter body and a plurality of pressurizing assemblies; an annular cavity communicated with an external high-pressure water source is formed in the cutter shaft; the annular cutter body is rotationally arranged on the cutter shaft, and a plurality of blind holes are formed in the annular cutter body; the pressurizing assembly comprises a compression block, a plugging block and a first elastic piece; the compression block is in sealed sliding connection with the inner wall of the blind hole to form a compression cavity, and a plurality of first channels used for communicating the compression cavity with the annular cavity are formed in the annular cutter body; a sliding groove, a communicating hole and a water spraying hole are formed in the compression block; the sliding groove communicates with the compression cavity through the communicating hole. The sliding groove communicates with the end face of one end of the compression block through the water spraying hole. The plugging block is slidably connected with the sliding groove and blocks the water spraying hole when located at the end, close to the central axis of the annular cutter body, in the sliding groove. The first elastic piece is used for enabling the compression block to pop out of the blind hole. The rock breaking device has the effects of reducing water source waste and improving the rock breaking efficiency.

The invention relates to the technical field of TGV substrates, in particular to a TGV substrate structure which comprises a TGV substrate, a plurality of glass through holes are formed in the TGV substrate, and filling copper for interconnection of multiple layers of TGV substrates is arranged in each glass through hole; the blind holes are arranged around each glass through hole and are used for buffering thermal expansion of the filling copper; and the filling film is arranged in the blind hole and is matched with the blind hole to buffer the thermal expansion of the filling copper. The blind hole is formed around the glass through hole, the filling film is arranged in the blind hole, and the hole structure and the filling film are utilized to buffer deformation of the TGV substrate under the condition that the filling copper is heated and expanded, so that the possibility that the TGV substrate cracks and even chippings are generated due to the fact that the heating expansion amount of the filling copper is larger than the expansion amount of the TGV substrate is reduced, the safety of the TGV substrate is guaranteed, and the production efficiency of the TGV substrate is improved. And therefore, the safety and the use stability of the TGV packaging chip can be ensured.

The invention relates to a deep blind hole grinding method and a grinding device, the grinding device comprises a working table and a main shaft, a positioning tool is arranged on the working table, the main shaft is connected with a detachable first grinding tool or a detachable second grinding tool, and the length of the first grinding tool is smaller than that of the second grinding tool; the second grinding tool comprises a connecting rod, one end of the connecting rod is provided with a connector, the outer wall of the other end of the connecting rod is sleeved with a grinding tool, the connecting rod between the connector and the grinding tool is sleeved with a supporting sleeve, the supporting sleeve is in clearance fit with the connecting rod, and the end, facing the connector, of the supporting sleeve is connected with a positioning mechanism. The supporting sleeve extending into the blind hole is used for supporting the connecting rod, the stability of the connecting rod can be improved, bending deformation of the connecting rod is prevented, vibration of the connecting rod is reduced, and therefore the grinding precision is improved.

The invention discloses a conductive paste, a metallized substrate and a metallization process for manufacturing the metallized substrate, the conductive paste comprises metal particles, the particle size of the metal particles is 0.1-10 [mu] m, and the mass ratio of the metal particles is 80-98%; in the metallization process, a copper layer is arranged on the hole wall of a through hole or a blind hole of a substrate, then conductive slurry is filled in the hole with the copper layer, heating sintering treatment is carried out, and after heating sintering is carried out in an inert gas atmosphere at the temperature of less than or equal to 300 DEG C, metal particles can be fused to form a connection structure or a eutectic structure. A reinforcing layer can be formed between the nano metal particles and the copper layer, and the reinforcing layer is a metal bonding layer or an intermetallic compound layer. The metallization mode is suitable for a through hole or a blind hole of a glass / silicon / ceramic substrate with a high aspect ratio and a micro aperture, and the technical problems that complete filling is difficult to achieve and filling defects exist in an existing electroplating process, the electrical resistivity of conductive paste is high, and the interface bonding force is insufficient can be solved.

The invention provides an outgoing line protection assembly and a motor. The outgoing line protection assembly is used for protecting a lead-out wire of a motor stator, and comprises an outgoing line sheath which comprises an electric insulation part made of an insulation material, and the electric insulation part is arranged in the motor and located at a wire welding position on the stator; a groove of a blind hole structure is formed in the side wall, facing the wire welding position, of the electricity insulation part, and the groove covers the wire welding position. According to the invention, the electric insulation part is arranged on the traditional outgoing line protection device, the welding point on the stator is covered, the voltage resistance and insulation of the motor end cover and the welding point are ensured, an electric insulation ring structure is not needed, the operation is reduced, the assembly efficiency is improved, and the cost is reduced.