18results about How to "Precise size control" patented technology

This utility model discloses an integrated chamfering and edge grinding machine, relating to the field of machining technology. It includes a conveyor frame, an edge grinding frame, a clamping assembly, a lifting mechanism, and an edge grinding assembly. In use, the conveyor motor, chamfering drive motor, clamping motor, lifting mechanism, and edge grinding motor are activated separately via a controller. First, the output shaft of the clamping motor drives the clamping drive shaft to rotate. A clamping gear, mounted on the clamping drive shaft, rotates along with it. The clamping gear meshes with the serrated teeth of a misaligned clamping rod, causing the misaligned clamping rod to move under the drive of the clamping gear, thus opening and closing the clamping jaws. When the clamping jaws are closed, they firmly clamp the part to be processed, providing stable support for the chamfering operation. After the part is clamped by the clamping jaws, the chamfering drive motor starts, and its output shaft is connected to the clamping assembly to perform the chamfering operation on the part.

The application relates to a soluble silk fibroin pellet quick-freezing, separating and collecting device. The device comprises a low-temperature treatment tank, an external heat preservation tank, a feeding assembly, a separating assembly and an electric control system. The low-temperature treatment tank is nested in the external heat preservation tank and is adiabatic; the feeding assembly is arranged between a top cover plate and an adiabatic plate and comprises a material feeding pipe, a liquid nitrogen feeding pipe and a recovery pipe; a liquid drop pipe is arranged in the material pipe and is provided with a heating device arranged inside the liquid drop pipe to prevent freezing; liquid drops fall through the adiabatic plate into liquid nitrogen to be quickly frozen into small balls. The parameters of a stirring paddle can be adjusted to control the particle diameter, and a peristaltic pump and the specification of the drop pipe are used to control the size. The quick-frozen mixture flows into a separating tank through a low-temperature electromagnetic valve, small balls are intercepted by a screen, and liquid nitrogen is recycled. The electric control system is used for regulating and controlling stirring, the electromagnetic valve and heating power. The device can ensure resolubility through low shear quick freezing, the quick-frozen mixture can be freeze-dried in less than 24 hours due to the high specific surface area of the small balls, the cost is reduced through liquid nitrogen circulation, and the flux and particle diameter can be controlled through multi-parameter adjustment, so that the device is suitable for the preparation of silk fibroin and composite materials.

This disclosure relates to a liquid spraying device, characterized in that it includes: a control unit, a spray head, a droplet driving unit, and a liquid supply device. The control unit is configured to receive target liquid spraying information, the target liquid spraying information including the droplet volume and number of sprays per spray as set according to requirements. The droplet driving unit is configured to generate a corresponding spraying waveform signal based on the droplet volume and the number of sprays. The liquid supply device is configured to supply target liquid to the spray head in a voltage-stabilized and constant-flow manner, and the spray head, in response to the spraying waveform signal, sprays the target liquid supplied by the liquid supply device from one or more outlets with the set droplet volume and number of sprays per spray.

This utility model provides a sound insulation cotton cutting device, relating to the field of sound insulation cotton processing technology. It includes a workbench with a first support frame installed in the middle of its upper surface. A trimming mechanism is installed at the lower end of the first support frame. A second support frame is installed at one end of the upper surface of the workbench, and a cutting blade is movably installed at the lower end of the second support frame. This utility model utilizes two annular blades to simultaneously trim and cut both sides of the sound insulation cotton without secondary processing, significantly shortening production time, improving efficiency, and reducing time costs. Furthermore, the annular blades can be replaced according to the material thickness via a locking bolt and slider, and the spacing between the blades can be controlled to precisely control the overall size of the material after trimming and cutting, effectively improving cutting accuracy and ensuring product quality stability.

The application discloses an asymmetric hybrid mesoporous material and a preparation method and application thereof, and belongs to the technical field of mesoporous materials; the preparation method comprises the following steps: taking a template agent, a pore expanding agent and an organic silicon source as the basis, combining SiO2 nanospheres and an organic silane capping agent to prepare superstructure silicon spheres; then, the superstructure silicon spheres are dispersed in an alcohol-water mixed solvent, dopamine hydrochloride is added, and in-situ polymerization is carried out under the action of ammonia water to obtain an asymmetric mesoporous material. The material has a high specific surface area and a rich hierarchical pore structure, and the mesoporous superstructure silicon sphere constructed by the SiO2 nanospheres is one end, and the polydopamine layer is the other end. The application has the advantages of simple process and mild conditions, and the material morphology and size can be controlled by adjusting reaction parameters. When the material is applied to a water-based zinc ion battery negative electrode, the specific capacity, cycle stability and rate performance of the battery can be significantly improved, the zinc dendrite growth and side reactions can be effectively inhibited, and the material has important energy storage application value.

This invention discloses a stripe projection 3D imaging system based on a Micro-LED array. Its 3D information acquisition module consists of an integrated packaged Micro-LED driver board, a Micro-LED array, a micro-projection module, and a CCD camera. The 3D reconstruction module utilizes a computer. The micro-projection module is equipped with a plano-convex lens and a mechanical focusing damping structure, and is separately arranged in the front and rear optical paths of the Micro-LED array. The system's workflow is as follows: the driver board reads pre-stored stripe pattern data and timing-controls the Micro-LED array to output coded structured light stripes; the focusing structure adjusts the object distance in the optical path, focusing and scaling the stripes before projecting them onto the surface of the object being measured; the CCD camera simultaneously acquires a sequence of deformed images modulated by the object's shape and transmits it to the computer; the computer combines a multi-step phase-shifting algorithm and Gray code rules to complete phase calculation and unfolding, and, combined with a preset phase-height mapping relationship, reconstructs the 3D shape and point cloud data of the object being measured. This invention enables low-cost, miniaturized, and high-performance 3D shape measurement.

This invention provides a torque angle logic control method and control system, a rolling connection device, a storage medium, and an electronic device. The method includes: employing an independent angle control method, setting a target angle for the motor spindle during the rolling process, acquiring the real-time angle of the motor spindle during the rolling process, and controlling the operation of the motor spindle of the rolling connection device based on the real-time angle and the target angle; when the real-time angle reaches the set target angle during the rolling process, the motor spindle of the rolling connection device automatically reverses and exits. This invention effectively ensures the stability and consistency requirements of the product and meets the expected service life of the product.

The utility model discloses a horizontal bottom seat flexible interface double rubber ring reinforced concrete pipe production device relates to reinforced concrete pipe production technical field, and it is including: base, outer mould, inner mould, jacking mechanism and traction mechanism, and the inner mould is seamless hollow cylinder, and the inner mould is used to install in the outer film, to form the pouring space of double rubber ring reinforced concrete pipe between the outer mould and the inner mould, and one end of the inner mould is provided with jacking part, and the other end is provided with traction part, the jacking mechanism is set up in the one side of base, when the strength of double rubber ring reinforced concrete pipe reaches 70%~75% of design strength, and the jacking mechanism jacks up the jacking part to make the initial separation gap between the inner mould and double rubber ring reinforced concrete pipe, the traction mechanism is set up in the one side of base away from the jacking mechanism, and the traction mechanism is used for connecting with traction part to pull out the inner mould horizontally, simple structure, convenient to use, effectively solve the horizontal production process to face the inner mould demoulding problem, effectively improve the inner wall forming quality.

This invention relates to a thermo-responsive nanocarrier based on a biomass core, its preparation method, and its applications. First, using hydroxyl-containing biomass materials such as cyclodextrin and cellulose nanocrystals as a core, a macromolecular initiator with ATRP initiating groups modified on its surface is prepared through an acylation reaction. Then, the macromolecular initiator is mixed with thermosensitive monomers such as N-isopropylacrylamide for ATRP polymerization to obtain a thermo-responsive nanocarrier. Next, the thermo-responsive nanocarrier is blended with functional reagents such as antibacterial agents to obtain a supported thermo-responsive nanocarrier. Finally, the supported thermo-responsive nanocarrier is mixed with a matrix material such as textile fibers to obtain a supported thermo-sensitive functional material. The preparation method of this invention has the advantages of simple process, green and controllable characteristics, and the obtained thermo-responsive nanocarrier can be widely used in the field of functional materials in light industries such as textiles, leather, and footwear, endowing related products with various intelligent properties.

This invention belongs to the field of SERS detection, specifically relating to a double-shell Ag-ZnAl2O4-MOF composite material, its preparation method, and its application in trace detection of organic pollutants. First, ZnAl2O4 nanoparticles are synthesized using a hydrothermal method. Then, the prepared ZnAl2O4 nanoparticles are placed into a prepared MOF growth solution to form a ZnAl2O4-MOF composite structure. Further composite with Ag nanoparticles is then formed to create the double-shell Ag-ZnAl2O4-MOF composite material. The Ag-ZnAl2O4-MOF composite substrate exhibits a synergistic effect of physical and electromagnetic reinforcement. Furthermore, due to the large specific surface area, porosity, and multiple metal sites of the intermediate MOF layer, more hot spots can be formed. The charge transfer effect generated by the composite with ZnAl2O4 produces an electromagnetic reinforcement effect. These characteristics effectively enhance the SERS signal intensity.

The utility model relates to the technical field of motors, and discloses a motor rotating shaft structure and a permanent magnet servo motor, the motor rotating shaft structure comprises a rotating shaft main body and a bearing transition sleeve sleeved on the rotating shaft main body, the bearing transition sleeve comprises a first sleeve body section and a second sleeve body section which are integrally formed, and the diameter of the first sleeve body section is larger than that of the second sleeve body section. And the transition end surfaces of the first sleeve body section and the second sleeve body section and the peripheral surface of the second sleeve body section are plated with ceramic layers. According to the motor rotating shaft structure, the combination mode of the rotating shaft body and the bearing transition sleeve is innovatively used, ceramic plating machining is transferred to the bearing transition sleeve, ceramic plating machining does not need to be carried out on the motor rotating shaft, and the constraint that the clamping stroke of a machine tool is limited, and tool changing and tool setting are tedious in the whole shaft machining process is eliminated; the size of each part can be accurately controlled in the grinding machine machining process, so that the thickness of a ceramic plating layer is uniform, the surface flatness is high, the overall machining precision is greatly improved, the insulation performance reduction caused by machining errors is avoided, and a reliable guarantee is provided for effective inhibition of shaft current.

The application discloses a kind of solid dispersion nanoparticles and preparation method thereof, belong to medical technology field, using SAS process to obtain drug-carrier solution to further prepare telmisartan binary solid dispersion and telmisartan ternary solid dispersion.The application uses the above-mentioned one kind of solid dispersion nanoparticles and preparation method thereof, using SAS method successfully prepares telmisartan binary solid dispersion, ternary solid dispersion;And the construction of SAS method to telmisartan solid dispersion system, breaks through the limitation of traditional method, can accurately control particle size, stable formation amorphous drug to improve dissolution, can also protect the activity of heat-sensitive component and realize low solvent residue, with process flexibility and industrialization potential.

The utility model relates to the technical field of super -thin intermediate covering agent production, concretely is a kind of super -thin intermediate covering agent grinding device, including bottom plate, and the grinder barrel is installed in bottom plate top, further include: grinding mechanism, setting on the top surface of bottom plate, for the adjustable grinding treatment of material inside grinder barrel, grinding mechanism includes the vertical plate fixed on the top surface of bottom plate, the mounting plate located above grinder barrel, and the rotating roller rotationally connected with mounting plate.The utility model through the design of grinding mechanism, realized the flexible adjustment of the distance between grinding disc and the bottom surface in grinder barrel, reached the effect that can accurately control the size of grinding particle according to different grinding needs, and lifting motor drives mounting plate to lift, so that grinding disc can move up and down, and this adjustable design makes the device can adapt to the grinding requirements of a variety of different specifications of super -thin intermediate covering agent, improves the versatility and applicability of device, greatly improves the grinding quality and production flexibility of product.

This utility model provides a turning tool device for notched sample machining, including an indexable insert, a tool holder, and a screw. The indexable insert and the tool holder are fixedly connected by the screw. The tool holder is a CNC external turning tool straight head tool holder, with a diamond-shaped insert mounting groove at the head. A threaded hole that mates with the screw is located in the center of the insert mounting groove. The indexable insert has a central through hole coaxial with the threaded hole in the middle. The insert is replaced and fixed by screwing through the screw and screwing it into the tool holder.

The present application relates to a kind of preparation methods of niobium tube target material, belong to the preparation technical field of tubular target material for magnetron sputtering, the present application uses niobium powder as raw material, designs special cold isostatic pressing tooling, successively after granularity control proportioning and mechanical uniform mixing, cold isostatic pressing structure assembly, powder filling and cold isostatic pressing, cold isostatic pressing compact machining, hot isostatic pressing structure assembly, vacuum hot degassing of sheath, sheath hot isostatic pressing and machining process preparation niobium tube target material, the niobium tube target material prepared by the present application has the characteristics of high density, uniform structure, small radial thickness deviation, good straightness, controllable length-diameter ratio, and integral binding with back tube forming, etc., coating film applicability is wide, test shows that its relative density is ≥99%, oxygen content is ≤2500ppm, structure is uniform, radial thickness deviation is ≤0.3mm, straightness is ≤1mm, length-diameter ratio is controllable in the range of 8:1~20:1.

This utility model belongs to the field of medical device technology and discloses a tunneling knife for cardiothoracic surgery. It includes a knife body and blade tips and a handle respectively disposed at both ends of the knife body, with the blade tips being conical or bullet-shaped. This utility model has a simple structure, is easy to operate, can precisely control the size and shape of the incision, and results in a small surgical wound, making it highly practical. This utility model also includes a tunnel tube sleeved on the knife body. The tunnel tube sleeved on the knife body allows the tunnel tube to be inserted into the puncture tunnel during the puncture process. After the puncture is completed, there is no need to insert the tunnel tube separately after the puncture, which greatly improves surgical efficiency.

This invention relates to a composite sodium-replenishing material, its preparation method, an electrode, and a battery. The composite sodium-replenishing material comprises a matrix, a sodium-replenishing agent body, and a conductive reinforcement. The matrix is ​​porous carbon fiber; the sodium-replenishing agent body is distributed on the surface and within the pores of the matrix; the conductive reinforcement is partially embedded within the sodium-replenishing agent body and partially located on its outer surface. The preparation method of the composite sodium-replenishing material includes the following steps: hydrothermal treatment of a dispersion; the dispersion comprises porous carbon fibers, sodium salt, and a conductive reinforcement. The composite sodium-replenishing material of this invention can improve the initial efficiency and capacity retention of sodium-ion batteries.

The application discloses a manufacturing process for improving the solder mask bridge falling problem of a high-layer circuit board based on an AI server, relates to the field of PCB manufacturing technologies, and comprises a pretreatment process, a silk-screen printing process, a pre-baking process, an exposure process, a developing process and a high-temperature curing process. The pretreatment process adopts volcano ash plate grinding and super-rough cleaning. The silk-screen printing process adopts secondary printing of oil, and the first solder mask bridge position is blocked from oil. The exposure process reduces the gap between the solder mask bridge and the design PAD and etching PAD. The developing process maintains the pH value of developing liquid at a constant value by calculating the ink usage of a single PCB and adopting the drag tank method or the production green oil plate method, so that the problems of the prior art, such as the easy falling of the solder mask bridge and the high defect rate, are solved.