164results about How to "Avoid frequent replacement" patented technology

The invention relates to a virtual power plant bidding strategy optimization method based on a chaotic game optimization algorithm. The method comprises the following steps: generating an initial bidding strategy of a virtual power plant through chaotic mapping; each virtual power plant receives feedback information of the market, games by considering factors of cost, income, fluctuation of photovoltaic power generation, scheduling cost and attenuation of an energy storage battery and service life of equipment, and adjusts a bidding strategy of the virtual power plant; punishment income is applied to bidding behaviors violating market ethics or benefit distribution constraints; calculating the income of the power plant according to the adjusted strategy, and updating the bidding strategy of each virtual power plant; and repeating the game process until a convergence condition is reached, and outputting a virtual power plant bidding strategy. Compared with the prior art, the bidding strategy of the virtual power plant is more flexible and adaptive by using the randomness and unpredictability of the chaotic system, and meanwhile, the fairness, sustainability and healthy market development of the system are ensured by introducing ethical constraint and equipment life management.

The invention provides a flow velocity compensation method and device, electronic equipment and a medium. The method comprises the following steps: calculating the flow velocity of each current sound channel, taking the sound channel with a flow velocity result as a normal sound channel, and taking the sound channel without the flow velocity result as a fault sound channel; acquiring compensation data corresponding to the fault sound channel; wherein the compensation data of the sound channel comprises a predicted ratio of the current flow rate of the sound channel to the average flow rate, and the compensation data of the sound channel is obtained based on a historical ratio of the flow rate of the sound channel to the average flow rate; and calculating the average flow velocity of the compensated current fluid according to the flow velocity of the normal sound channel and the compensation data of the fault sound channel. According to the method provided by the invention, the fault sound channel can be accurately compensated.

The invention relates to multi-process combined injection molding equipment and an injection molding method.The injection molding equipment comprises a mold closing assembly, a range finder, a first injection assembly, a gas injection assembly, a second injection assembly, a manipulator and an infrared heater, the mold closing assembly comprises a fixed mold plate and a movable mold plate which are oppositely arranged, and a mold is arranged between the fixed mold plate and the movable mold plate; the range finder is arranged on the mold; the first injection assembly is used for injecting a foaming material of a product main body into the mold, and the first injection assembly communicates with the gas injection assembly; the second injection assembly is used for injecting a second component material into the mold; the manipulator is used for clamping the thermoplastic organic sheet, and the infrared heater is used for heating the thermoplastic organic sheet. Compared with the prior art, integrated lightweight product machining is completed on the same equipment, multiple parts are directly connected when formed in the mold, product transfer and recombination caused by multiple independent procedures are avoided, and the production efficiency and the production quality are effectively improved.

The utility model discloses a pulmonary alveolar lavage device which comprises a suction catheter and an ultrasonic probe, wherein the suction catheter is used for entering a bronchus through an insertion tube of an endoscope for pulmonary alveolar lavage, and the ultrasonic probe is used for entering the bronchus through the suction catheter. The suction catheter comprises a non-transparent flexible section located at the far end and a transparent section communicated with the near end of the flexible section, and the hardness of the transparent section is larger than that of the flexible section. By using the alveolar lavage device, the shape of the bronchus into which the suction catheter enters and the runner condition of the suction catheter can be observed in real time, and the suction catheter can be prevented from being blocked.

The invention discloses a polishing process for a door plate of a control cabinet. The polishing process comprises the steps of abrasive paper mounting, parameter setting, workpiece checking and fixing, polishing track setting, polishing, cleaning and detecting. The grinding device has the advantages that the movement track is set for the grinding mechanical arm, the grinding machine arranged at the end of the grinding mechanical arm is used for grinding operation, physical strength expenditure of grinding operators is reduced, labor intensity is lowered, rough grinding, accurate grinding and polishing can be completed at a time through the grinding mechanical arm, working efficiency is improved, frequent equipment replacement is avoided, and production cost is reduced. In addition, a polishing worker does not need to hold a polishing machine to directly contact with a workpiece for polishing, suction of polishing dust is reduced, the probability of occupational diseases is reduced, standardization of polishing operation is guaranteed through a fixing tool, consistency of surface treatment of the door sheet is guaranteed, the whole process guarantees high efficiency, safety and standardization of production, product quality is improved, and the production cost is reduced. The cost is reduced.

The utility model discloses a clamping and positioning mechanism for metal hose welding. The clamping and positioning mechanism comprises a horizontal and rotatable supporting piece and a metal sleeve, wherein the metal sleeve is coaxially and slidably arranged on the supporting piece in a sleeving mode and can be locked after sliding. A plurality of metal tensioning pieces are fixedly arranged at one end of the metal sleeve at intervals in the circumferential direction of the metal sleeve, the end of the supporting piece is a reducing part, and when the metal sleeve moves from the end of the supporting piece to a shaft body of the supporting piece, all the metal tensioning pieces can be expanded and wrap the supporting piece. According to the clamping and positioning mechanism for welding the metal hose, the defects that in the prior art, during welding, a worker needs to manually rotate the metal hose for girth welding, but in the rotating process, the metal hose is prone to moving relative to the positioning mechanism, so that the welding position deviates, and the welding effect is reduced are overcome.

The invention relates to an injection molding device with a surface modification structure. The injection molding device comprises a mold closing structure, a first injection assembly, a melting and mixing assembly and a second injection assembly, the mold closing structure comprises a mold closing bed body, a first mold plate, a second mold plate and a third mold plate, the first mold plate and the second mold plate are oppositely arranged on the mold closing bed body, the third mold plate is located between the first mold plate and the second mold plate, a first mold and a second mold are arranged on the first mold plate and the second mold plate respectively, and a third mold and a fourth mold are arranged on the two sides of the third mold plate respectively. The third mold plate is connected with the mold closing bed body, so that the mold closing structure has a first mold closing state and a second mold closing state; an injection machine barrel and a nozzle are arranged on the first injection assembly, and the nozzle is communicated with the second template; the melting and mixing assembly comprises a screw extruder and a melt buffer which are communicated with each other; and the second injection assembly is communicated with the first template. An on-line mixing technology, an injection compression technology, an in-mold modification technology and the like are integrated in the same injection molding device. Therefore, in one cycle, light-weight parts are finished by using modified formula mixing, injection compression technology and the like, and the requirements of the industry on high efficiency, light weight, carbon reduction, economy and ultimate surface are met.

The invention relates to the field of bending mechanisms, and discloses a titanium alloy plate bending mechanism which comprises a base, a bending machine body is arranged on one side of the top of the base, a moving seat is arranged in the bending machine body, a bending knife is arranged at the bottom of the moving seat, and an adjusting mechanism is arranged on one side of the top of the base. An adjusting mechanism is arranged on the outer side of the bending machine body, a correcting mechanism is arranged on the top of the adjusting mechanism, the adjusting mechanism is arranged on the outer side of the bending machine body, the top of the adjusting mechanism is located below the bending cutter, and a heating mechanism is arranged on one side of the outer portion of the base. The adjusting mechanism comprises an adjusting seat, and the bottom of the adjusting seat is fixedly connected to the outer side of the bending machine body. Automatic adjustment is achieved by adjusting the bending radian and changing the supporting position and height, a large amount of debugging time consumed by adjusting the bending radian in a traditional production mode is effectively shortened, the production process is optimized, frequent die replacement is avoided, and the production process is more continuous and efficient.

This invention relates to the field of wastewater treatment technology, and in particular to a wastewater purification and reuse device based on a membrane bioreactor. Addressing the limited removal efficiency of pollutants adhering to membrane elements in existing technologies, this invention provides a wastewater purification and reuse device based on a membrane bioreactor. The device includes a treatment tank containing a membrane bioreactor assembly. The assembly includes an assembly frame with multiple membrane elements mounted on it. Scrapers that cooperate with the membrane elements are located on both sides of a horizontal plate. A cleaning assembly also includes a vertically movable frame. When the frame moves downwards, the horizontal plate moves downwards, and the scrapers clean the outer surface of the membrane elements downwards. A movable scraper is located on a support, and a collection box is located on one side of the support. When the scraper moves to one side, the collection box opens. By directly scraping away impurities adhering to the outer surface of the membrane elements, suspended solids, colloidal particles, microbial flocs, and other pollutants on the membrane surface can be removed quickly and effectively.

The utility model discloses a drilling tool mud scraper auxiliary device for drilling, and belongs to the technical field of hydrogeological drilling. Comprising a drilling tool body. A mud scraping hole is formed in the mud scraper, and the drilling tool body penetrates through the mud scraping hole; the mud scraper is used for preliminarily cleaning mud on the surface of the drilling tool main body; the elastic binding ring is arranged on the drilling tool main body in a sleeving manner; the elastic binding ring is used for conducting secondary cleaning on slurry on the surface of the drilling tool body. And two ends of the connecting rope are respectively connected with the mud scraper and the elastic binding ring. The drilling tool mud scraper auxiliary device for drilling is easy to manufacture and operate, the service life of a mud scraper is prolonged, mud scraping efficiency is improved, frequent replacement of the mud scraper is avoided, and construction time is saved; meanwhile, the slurry is further recycled, and the construction cost is saved.

The invention discloses a pet odor purifier, and relates to the technical field of purifiers, the pet odor purifier comprises a housing, an adsorption element, a heating element and a decomposition element, the adsorption element, the heating element and the decomposition element are mounted in the housing, the adsorption element can adsorb odor molecules in ambient air, the heating element is connected with the adsorption element, and the heating element can heat the adsorption element; the adsorption element is used for adsorbing odor molecules, the adsorption element is used for decomposing and releasing the adsorbed odor molecules, the decomposition element is arranged close to the adsorption element and can decompose the odor molecules released by the adsorption element, and an outlet of the decomposition element can be communicated with the outside. The pet deodorant can quickly, efficiently and safely eliminate various foul smells generated by pets.

According to the monopole combined type surgical tool and the surgical robot, the tool comprises a first forceps component, a second forceps component and a driving part, the first forceps component comprises a first clamping part located at the far end and a first shearing part located in the middle, and the second forceps component comprises a second clamping part located at the far end and a second shearing part located in the middle; the second clamping part is used for being matched with the first clamping part to achieve clamping, the second shearing part is used for being matched with the first shearing part to achieve shearing, the driving part is used for driving the second forceps component to move, the far end of a driving wire of the driving part is connected with the second forceps component, and the near end of the driving wire is used for receiving unipolar energy. A conductive path is formed between the second jaw member and the drive wire. By selectively carrying out the monopole operation, the clamping operation or the shearing operation on the same surgical tool, a doctor can be prevented from frequently switching among a monopole tool, a clamping tool and a shearing tool in the surgical operation process, and the surgical time is shortened.

The utility model discloses a pickaxe-shaped cutting pick. The pickaxe-shaped cutting pick comprises a pick body assembly, a pick head, a hard alloy head and a ball type wear-resistant layer assembly, a rib type reinforcing rib assembly is installed on the outer wall of the tooth body assembly. The tooth head is of a cone frustum structure, and the bottom face of the tooth head is fixedly connected with the top face of the tooth body assembly. The hard alloy head is mounted on the top surface of the tooth head; the ball type wear-resistant layer assembly comprises a plurality of wear-resistant balls and a plurality of mounting grooves, and the mounting grooves are formed in the side wall of the tooth head in the circumferential direction. Through the arrangement of the mounting grooves and the wear-resistant balls, the eccentric wear phenomenon of the wear-resistant layer is avoided, the effect of protecting the pickaxe-shaped cutting pick is achieved, meanwhile, the use performance of the wear-resistant layer is improved, and the service life of the wear-resistant layer is prolonged; through the arrangement of the rib type reinforcing rib assembly, the effect of protecting the pick body assembly can be achieved, the spinning performance of the pickaxe-shaped cutting pick can be optimized, and the overall working efficiency and production efficiency are improved.

This utility model discloses an industrial processing fluid filtration system using the coagulation and diversion principle, comprising a three-compartment water tank, a low-voltage AC particle coagulation device, and a diversion filter cartridge. The three-compartment water tank is divided into a sludge tank, a filtration tank, and a supply tank. The low-voltage AC particle coagulation device includes a cylindrical electrode and an electrical control box. The diversion filter cartridge includes a cylindrical filter, and the interior of the cylindrical filter has a filter element parallel to the axis of the cylindrical filter. The three-compartment water tank, the low-voltage AC particle coagulation device, and the diversion filter cartridge are connected sequentially by water pipes. This industrial processing fluid filtration system using the coagulation and diversion principle is advanced in design, compact in structure, and easy to use. It aggregates fine particles in the processing fluid into larger particles, facilitating subsequent filtration, improving filtration efficiency and accuracy, and preventing excessive deposition and compaction of particles on the filter element surface, thus extending the service life of the filter element and avoiding frequent replacement.

The utility model discloses an air nozzle accessory and hairdressing equipment. The tuyere accessory comprises a tuyere outer shell, a tuyere inner shell and an adjusting structure. The tuyere outer shell is provided with an air inlet end and an air outlet end which are oppositely arranged. The air nozzle inner shell is sleeved with the air nozzle outer shell and provided with a hair combing part. The adjusting structure is arranged in the tuyere inner shell in a sleeved mode and comprises an air guiding piece and an adjusting piece, the air guiding piece is movably connected to the adjusting piece and the tuyere inner shell and has a first working state and a second working state, and the adjusting piece can move relative to the tuyere inner shell so that the air guiding piece can be switched between the first working state and the second working state. The air outlet area of the air guide piece in the first working state is larger than that of the air guide piece in the second working state. According to the air nozzle accessory, the function of the air nozzle accessory is more powerful, different hair styling requirements can be better met, the number of accessories carried by a user can be reduced, frequent replacement of the air nozzle can be avoided, and the use experience of the user is better improved.

The utility model relates to the technical field of base positioning, and discloses a composite zero-point positioning base which comprises a base body, a first positioning hole and a second positioning hole are formed in the base body, and the distances of fixing blind rivets of the first positioning hole and the second positioning hole are different. According to the base, the first positioning hole and the second positioning hole are formed in the base body, so that clamps of different specifications can be connected on the same base through the first positioning hole or the second positioning hole, frequent replacement of the base is avoided, and the machining efficiency is improved.

The application discloses an electronic float device based on posture sensing and low-power control and belongs to the technical field of electronic float for float fishing. The electronic float device comprises an upper shell and a lower shell which are threadedly connected to form a sealed shell, an electric control device is arranged in the upper shell, and a counterweight is clamped and arranged on the bottom surface of the lower shell. The electric control device comprises an electric control board and a battery assembly. A main control unit, a posture sensor and two LED lamps are integrated on the electric control board. The main control unit controls the on-off of the two LED lamps through a built-in dynamic acceleration threshold algorithm. The main control unit controls the on-off of the two LED lamps through the built-in dynamic acceleration threshold algorithm, different color source signals are more easily and accurately recognized, the electronic float device can adapt to wind and surge environment, accurately recognize fish biting hooks and has low false report rate. The detachable and replaceable counterweight can widen the adapted scene, match the float water depth and be suitable for more fishing fields in water areas and improve the adaptability. The STM32C011F4U6 microcontroller is adopted, low-power consumption is achieved, standby time is long and battery replacement is avoided.

The invention discloses a vagina contracting rod for recovery of pelvic muscle relaxation in the gynecology department, and belongs to the technical field of medical instruments, the vagina contracting rod comprises a rod body and a liquid injection head mounted at one end of the rod body, a plurality of groups of groove bodies are formed in the rod body and are linearly distributed at equal intervals, and a medicine storage mechanism and an acupuncture mechanism are arranged in each groove body; the medicine storage mechanism comprises a medicine storage bag and a connecting groove, the medicine storage bag is arranged in the groove body, the connecting groove is formed in the side, close to the liquid injection head, of the groove body, the medicine storage bag is located between the connecting groove and the needling mechanism, and a needling head of the needling mechanism is arranged opposite to the connecting groove. Through the linkage design of the locking mechanism and the supporting mechanism, sequential release of the multiple medicine storage mechanisms is achieved, the requirement for repeated and continuous medicine administration in the treatment process is met, frequent medicine replacement or repeated injection is avoided, the medicine administration process can be automatically completed through unlocking operation of the locking mechanism, external auxiliary equipment is not needed, and the operation is convenient. The patient can conveniently use the device at home.

The application belongs to the technical field of computer hardware testing, and discloses a multi-sensor integrated detection dock system for notebook computer performance testing, which comprises a multi-sensor module, a data acquisition and interface module, a main control module and a hardware component. The application has the following remarkable advantages: high integration and improved efficiency; data synchronization precision and improved analysis value; high automation degree and reduction of human error; consistent test conditions and strong result comparability.

The utility model relates to the field of electroplating liquid sealing in the electroplating process, in particular to electroplating equipment with an adjustable sealing coefficient, which comprises a tank body for electroplating operation, an opening is arranged on the side surface of the tank body, a window is arranged in the opening, and a sealing mechanism with an adjustable expansion coefficient is arranged between the window and the opening. And the sealing mechanism is filled with gas to fill a gap between the window and the tank body. According to the utility model, the sealing mechanism with the variable expansion coefficient is used, the variable capacity can cope with the change of gaps, so that the problem of leakage of electroplating liquid is solved, and compared with a traditional sealing strip, the variable capacity of the expansion coefficient can avoid the problem of frequent replacement and save a large amount of cost; furthermore, the mode of expanding by virtue of gas is adopted, so that the positions of the window and the traditional sealing strip do not need to be manually and deliberately adjusted, and therefore, the assembly stability brought by the sealing mechanism is remarkably improved.

The utility model relates to the technical field of sand screening, and discloses a sand screening device for constructional engineering, which comprises a first screen plate body and a mounting base, the mounting base is arranged at the bottom end of the first screen plate body, a second screen plate body is arranged on the first screen plate body, and through grooves are formed in the top end and the bottom end of the first screen plate body. Sliding blocks are slidably mounted in the through grooves, first fixing blocks are fixedly mounted on one sides of the sliding blocks, one sides of the first fixing blocks are connected with the outer wall of the second sieve plate body, second fixing blocks are arranged on the sides, away from the first fixing blocks, of the sliding blocks, and mounting holes are formed in the second fixing blocks; according to the specific operation, the first sieve plate body and the second sieve plate body are arranged, the second sieve plate body is driven to horizontally move through the sliding blocks, and therefore the hole diameter of the sieve plate can be adjusted, workers are prevented from frequently replacing the first sieve plate body, and the working efficiency of the sieve plate is further improved.

The application discloses a new process for purifying alcohol ultra-clean high-purity reagent by rectification-double membrane method, which comprises the following steps: firstly, removing heavy components in alcohol ultra-clean high-purity reagent raw materials by simple rectification technology to obtain alcohol ultra-clean high-purity reagent with purity higher than 99.9%; and then, separating the alcohol ultra-clean high-purity reagent by membrane separation technology to remove other low-boiling volatile organic matters, metal ions and insoluble impurity particles, and obtaining SEMIG5 or above grade alcohol ultra-clean high-purity reagent on the permeation side by condensation. In addition, the alcohol ultra-clean high-purity reagent on the rejection side of the permeation vaporization returns to the rectification tower, and the evaporation enthalpy of the distillation process and the vaporization enthalpy of the membrane separation process are combined, so that the energy loss in the repeated vaporization and condensation process is reduced, and the energy utilization efficiency is improved.

The utility model relates to a cutting device for mechanical engineering spare part machining belongs to mechanical manufacturing technical field. The upper end of base and the both sides of movable block lower end are slidably connected through corresponding inner sliding slot respectively, and are limited and fixed through limiting mechanism, limiting mechanism is arranged at one side of base, and the other side of base is installed with cutting mechanism, the upper end of movable block is installed with clamping mechanism, and clamping mechanism is cooperatively arranged with cutting mechanism. The utility model realizes that the clamping mechanism position is adjustable to adapt to different size spare part cutting demand, avoids frequently replacing the fixture or adjusting workpiece posture, promotes operating efficiency, improves cutting precision and processing quality, enhances workpiece clamping stability, realizes different size workpiece quick clamping and fixing, shortens the time of mounting and clamping, realizes clamping position quick locking and release, and the operation is simple and efficient.

The invention relates to the technical field of steel truss lifting, and discloses an integral lifting platform for a large-span steel truss, which comprises a steel truss main body and a lifting machine, the steel truss main body is placed on the lifting machine, and the lifting machine is driven by a main driving device to lift; a flexible assembling assembly and protection assemblies are arranged on the elevator, the flexible assembling assembly is arranged on the elevator, a limiting assembly is arranged on the flexible assembling assembly, the protection assemblies are arranged at the ends of the two sides of the flexible assembling assembly, and filter screen assemblies are installed on the protection assemblies. Through cooperation of flexible assembly and the protection assembly, the problem that existing equipment is poor in adjustability is solved, different lifting sets in the flexible assembly assembly are spliced through clamping protruding heads and sliding grooves, stable connection is achieved through cooperation of the limiting assembly, and the lifting sets can be increased or decreased according to the length of the steel truss; the height of the protection assembly is adjusted through hydraulic lifting of the side protection plate, the sliding hook drives the elastic net and the bearing net for covering protection, the elastic hole and the soft bag buffer falling impact, and flexible assembly and comprehensive protection are integrally achieved.

The present invention provides a cutting device for aluminum plate processing, which belongs to the technical field of aluminum plate processing. It includes a base with a carrier; a pressing mechanism connected to the base; a cutting mechanism connected to the carrier; the pressing mechanism and the cutting mechanism have a lifting movement in a direction perpendicular to the base; a feeding mechanism connected to the base and located below the carrier; the cutting mechanism includes at least a driving assembly and a cutting belt; the cutting belt is sleeved on the driving assembly in the form of a closed loop to form two cutting sections above the aluminum plate to be cut, and the two cutting sections are configured to simultaneously cut the aluminum plate to be cut under the action of the driving assembly. The double cutting sections of the cutting belt can perform double cutting on the upper surface of the aluminum plate at the same time, thereby completing the processing of multiple incisions in a single operation, which is twice as efficient as the traditional single incision method.

The invention discloses a cigarette sales display cabinet which comprises a display cabinet body, a display area is arranged in the display cabinet body, a display panel is arranged at the bottom of the display area, a plurality of goods storage cavities are formed in the display area, cigarette storage assemblies are installed in the goods storage cavities, and a top transparent cover plate and a front transparent cover plate are arranged outside the display area; a transverse mounting groove and a vertical mounting groove are formed in the display cabinet body, and a pressing assembly is further arranged at the bottom of the vertical mounting groove; a locking assembly is mounted on one side of the top end of the vertical mounting groove; a label strip is arranged on the display panel; through mutual constraint between the top transparent cover plate and the front transparent cover plate, the internal display space is sealed; the locking assembly realizes relative stability of the top transparent cover plate and the front transparent cover plate; the cigarette storage assembly is designed in a drawing mode, so that a user can take and place the cigarettes more conveniently; and the label strip can be used for clamping the written label into the groove, so that the label is convenient to replace and more convenient to move.

The utility model discloses an ejector rod mechanism for an aluminum brake caliper casting mold, which comprises an ejector rod assembly, the ejector rod assembly is of a split structure, a linear bearing is arranged on the periphery of the ejector rod assembly positioned in the casting mold, a heat insulation pad is arranged on the periphery of the linear bearing, the end part of the ejector rod assembly extends out of the linear bearing, and the end part of the ejector rod assembly is connected with the heat insulation pad. And the ports of the linear bearing and the heat insulation pad are flush with each other, and threaded caps are arranged at the ports to fix the linear bearing and the heat insulation pad. The ejector rod mechanism for the aluminum brake caliper casting mold can effectively solve a series of problems that after an ejector rod of an existing brake caliper casting mold is abraded, the ejector rod is inconsistent in ejection length, prone to deformation due to clamping stagnation, difficult to replace and the like.

The utility model relates to the technical field of house building construction, in particular to a material placing frame capable of being installed in a combined mode, which comprises a support body, and a layer plate assembly is installed on the outer wall of the support body in an attached mode. According to the improved material placing frame, the inserting bolts, the B-shaped pins, the supporting frames and the supports are installed, the height and the layer number of the placing frame can be freely adjusted, the first inserting plates, the second inserting blocks and the brackets are installed, the length and the width of the layer plate assemblies can be freely expanded, and through the modularized assemblies, the size can be flexibly adjusted according to needs, and rapid disassembly, assembly and expansion can be achieved; the goods shelf is suitable for different building material specifications, the utilization rate of longitudinal space is effectively improved through multi-layer installation, the occupied area is reduced, and therefore the overall space utilization rate, environment adaptability and storage efficiency are improved, damaged parts can be locally repaired or replaced under the condition that construction is not affected, frequent replacement or splicing of the whole goods shelf is avoided, and the labor intensity of workers is lowered. The labor cost is reduced, and the overall construction efficiency is improved.

This utility model discloses a machining device for positioning holes in CNC machining fixtures, relating to the field of positioning hole machining technology. It includes a worktable with an adjustment component inside, and a U-shaped frame fixed to the top of the worktable. A movable plate is slidably connected to the inner wall of the U-shaped frame, and an oil spraying component is located at the top of the movable plate. The adjustment component includes a fixed seat fixed to the center of the top of the worktable. This utility model achieves positioning and fixing of the positioning hole by inserting a positioning pin into the positioning hole in the part. When the tapered shaft rises, multiple sets of ball joints compress the return spring and extend from inside the positioning pin until the end face of the ball joint abuts against the inner wall of the positioning hole in the part. This effectively adapts to changes in the diameter of the positioning hole, ensuring precise alignment between the part and the tool, thereby improving machining accuracy, enhancing the versatility and flexibility of the device, avoiding frequent replacement of positioning pins of different sizes, simplifying the operation process, and improving production efficiency.