532results about How to "Reduce scrap rate" patented technology

The invention discloses a mold design method for a rubber part with a metal insert and a vulcanization molding process method thereof.The mold preparation method comprises the steps that firstly, a three-body type mold is designed according to the rubber part and comprises an upper mold, a middle mold and a lower mold, the middle mold, the upper mold and the lower mold are jointly positioned, and the middle mold and the lower mold are provided with glue overflowing grooves; 2, calculating the size of a mold cavity; step 3, mold preparation; the upper die, the middle die and the lower die are all made of 45 # steel, and the heat treatment hardness is 35-40 HRC; the roughness of the mold cavity part is 0.4, and the roughness of the matched part of the mold is 0.8. The vulcanization molding process method comprises the steps of rubber remilling, vulcanization molding, burr cleaning and inspection. Aiming at a rubber product containing an embedded metal ring, the problems of position control of an embedded part and difficulty in mold design are solved, and the problem of batch production is solved; the optimal product performance is ensured by the optimized vulcanization forming process; the environment-friendly effect is improved, and the waste rate is reduced.

The invention relates to the technical field of concrete electric pole manufacturing, and discloses an optimized steel fiber anti-crack ultra-high performance concrete centrifugal electric pole manufacturing method and system. The method comprises the following steps: dividing an electric pole manufacturing process into a plurality of manufacturing units according to production batches, and collecting material component data, process setting data and online detection data in each manufacturing unit to form a multi-source production data set; calculating an anti-cracking performance index and a strength performance index based on a multi-source production data set, and dynamically outputting an initial process correction value through a dual-threshold monitoring mechanism and a performance adjustment model; performing adaptive adjustment on the initial process correction value of each manufacturing unit according to the production correlation between the adjacent manufacturing units to generate an adjusted process correction value; and carrying out serialization processing on the adjusted process correction value, and outputting a production optimization instruction which is applied to a manufacturing execution process. According to the method, electric pole manufacturing whole-process data integration and dynamic process optimization are achieved, and the production efficiency and the product quality stability can be improved.

The utility model discloses a sleeve repair tool for a fuel manifold of a turboshaft engine, which comprises a support with the top end provided with a penetrating column with threads on the inner wall, and further comprises a threaded pressing rod with the top end provided with a pulling rod, and the threaded pressing rod is in threaded connection with the penetrating column through the threads on the outer wall; a semi-arc-shaped pressing plate is arranged at the bottom of the T-shaped sliding block, and the T-shaped sliding block is movably connected with the threaded pressing rod; a shape correcting arc plate is arranged on the positioning column opposite to the semi-arc pressing plate, and the positioning column is located at the middle section of the support; and the gland is connected to the positioning column through a bolt. According to the sleeve repairing tool for the turboshaft engine fuel main pipe, the problems that in the prior art, manual positioning is not accurate, and pipe wall cracks and internal threads are prone to being crushed to be scrapped due to repeated knocking are solved.

The utility model discloses a shoemaking hot-pressing die, and relates to the technical field of shoemaking hot-pressing dies. The EVA pouring mold comprises the lower mold, the upper mold and the functional mechanism, the functional mechanism comprises the upper middle mold and the lower middle mold, the upper middle mold and the lower middle mold are arranged, the upper middle mold and the lower middle mold are made of bakelite heat insulation plate materials, the bakelite heat insulation plate materials have good heat insulation performance, and when EVA pouring materials are heated, the EVA pouring materials are not prone to falling off. According to the technical scheme, part of heat can be effectively prevented from being conducted to the lower die, a cold blank is protected from being affected by overheating, and therefore it is guaranteed that the cold blank and EVA pouring materials are synchronously foamed at the proper temperature, the situations of color crossing, scorching and the like of finished products caused by flowing generated by excessive melting of the lower die cold blank are avoided, the rejection rate and the production cost are reduced, and the production efficiency is improved. And the positioning columns and the positioning blocks are arranged, so that alignment and positioning of the molds are ensured, the product quality problem caused by mold dislocation in the machining process is avoided, and the rejection rate caused by mold dislocation is reduced.

The application belongs to the technical field of inner gear ring processing equipment, and particularly relates to a secondary clamping tooth positioning device for an inserted cut inner gear ring, which comprises a base, a clamp provided on the base, a positioning sleeve matched with the clamp through a sliding bearing, and an elastic tooth positioning device matched with the positioning sleeve. The elastic tooth positioning device comprises a shell, a telescopic shaft provided in the shell, a cylindrical gauge bar and a drawing handle connected to the two ends of the telescopic shaft respectively, and the telescopic shaft comprises two parts of a thick shaft and a thin shaft, and a spring is sleeved on the thin shaft. The shell is connected with a turnover assembly, and the turnover assembly comprises a turnover plate and a turnover cylinder. The application has a reasonable structure, can accurately position the inner gear ring, ensures that the inner gear ring keeps the same phase when the inner gear ring needs to be clamped on the gear cutting machine for multiple times, improves the processing precision, reduces the waste rate, and is beneficial to batch production.

The utility model discloses a stainless steel pot trimming equipment, including machine table, rotation device, hold-down gear and cutting device, rotation device includes first frame, driving spindle, driven spindle and first drive mechanism, first frame is fixed connection on machine table, driving spindle is horizontally arranged and rotatablely connected on first frame, driven spindle is fixed on first drive mechanism. One end of the driving rotating shaft is fixedly connected with a first flange plate, the first driving mechanism is connected with the other end of the driving rotating shaft and can drive the driving rotating shaft to rotate, and the driven rotating shafts are used for sleeving stainless steel kettles and have different specifications; the first flange plate and the second flange plate are detachably and fixedly connected through bolts; the pressing device is used for pressing the stainless steel kettle onto the driven rotating shaft; the cutting device is used for cutting stainless steel kettles. The embodiment of the utility model can quickly adapt to the machining requirements of workpieces with different sizes.

The invention relates to the technical field of wire and cable processing equipment, in particular to a wire and cable copper wire drawing machine which comprises a machine table and the like, a pay-off device, a fixing plate and a pull rod are sequentially and fixedly mounted on the machine table from left to right, a wire drawing box is slidably connected to the position, close to the pull rod, of the machine table, and a fixed wire drawing module is fixedly connected to a side plate of the wire drawing box; the top end of the wire drawing box is fixedly connected with a lubricating liquid box, a hand pressure valve is installed between the wire drawing box and the lubricating liquid box, the hand pressure valve is connected with the fixed wire drawing module through a liquid pipe, and the hand pressure valve makes contact with the pull rod. Through the cooperative design of the hand pressure valve and the pull rod, automatic conveying control over lubricating liquid is achieved, in the wire drawing process, along with movement of the wire drawing box, the hand pressure valve is automatically opened, the lubricating liquid is accurately conveyed to the position where the wire drawing module is fixed, timely and effective lubrication is provided for a copper wire, and friction and abrasion between the copper wire and the wire drawing module are reduced.

The utility model belongs to the technical field of semiconductor manufacturing, and discloses a ring piece correction clamp. The ring piece correction clamp comprises a workbench, a positioning block, a locking device and a correction dial gauge, the workbench is used for bearing a ring piece, the positioning block is arranged on the workbench, a positioning groove is formed in the positioning block, one of the multiple protrusions of the ring piece is inserted into the positioning groove, and the locking device is arranged on the workbench relative to the positioning block. The locking device is used for abutting against the inner wall of the ring piece so as to fix the ring piece to the workbench, deformation of an end opening of the ring piece can be repaired through the correction spanner, the correction dial gauge on the workbench can indicate the roundness deviation of the ring piece in real time and provide clear roundness indication, an operator can accurately adjust the ring piece, the ring piece can reach the qualified standard, and the working efficiency is improved. Product abnormity is reduced, the rejection rate is reduced, and the stability of product machining quality is improved.

The utility model provides a kind of gas stove shell and table type gas stove, and gas stove shell includes: panel, bottom shell and the coaming connected between bottom shell and panel;The coaming is at least partially enclosed in the outside of panel and bottom shell, and first support part and second support part of protruding extension are equipped in its inside, wherein first support part is attached or connected with bottom shell, and second support part is attached or connected with panel.The utility model is by setting shell including panel, bottom shell and coaming, coaming is connected between panel and bottom shell, and at least partially enclosed in the outside of panel and bottom shell, can guarantee the positioning effect between coaming and panel, bottom shell, improve the efficiency and installation accuracy of assembly, simultaneously, when assembling and overhauling gas stove, coaming and bottom shell can be disassembled, and it is convenient for operator to disassemble and maintain functional components installed on bottom shell;Moreover, it is also favorable for reducing the production difficulty and scrap rate of bottom shell, and improving production efficiency.

This utility model discloses an automatic tool breakage detection device for a machining center, comprising a machining center body. An operation button is located on the left side of the front of the machining center body, and a display panel is located on the right side of the front of the machining center body. A machining groove is formed on the front of the machining center body, and a lifting hydraulic cylinder is located above the inner wall of the machining groove. This utility model, through the cooperation of a movable frame, a forward and reverse motor, a lead screw, and a nut seat, enables the movable frame to follow the position of the drill bit, ensuring that the infrared transmitter and infrared receiver are always in the appropriate position for tool breakage detection. Once the drill bit breaks, the infrared receiver receives an infrared signal, immediately triggering a buzzer alarm and an alarm light, promptly alerting the operator and preventing continued machining with the broken tool. This effectively improves workpiece machining quality, reduces scrap rate, lowers production costs, increases processing efficiency, and ensures smooth production.

The utility model relates to the field of board stacking equipment discloses a step type turnover guide roller device for stacking mechanism. The device sets up turnover rotary seat on the connecting seat of both sides of the frame, and the rotary seat is switched between the retracted position and the working position around the hinge shaft driven by the cylinder, the roller wheel is rotatably installed on the rotary seat, the outer circle of the roller wheel has the step structure extending along the circumference at the end close to the stacking center, the shoulder part surface is perpendicular to the roller wheel axis, and serves as the lateral positioning surface of the board edge part. In the working position, the step shoulder part surface and the side baffle jointly form the rolling guide and lateral limiting channel of the narrow plate, can realize stable distribution and accurate stacking under the width scene close to or lower than the conventional lower limit of adjustment, reduces the deviation and knock, and improves the production efficiency. The device is compact in structure, reliable in action, and convenient to integrate into the existing stacking mechanism to implement upgrading.

This utility model belongs to the technical field of corrugated cardboard processing equipment, and in particular to a corrugated cardboard flattening device. A flattening roller for flattening the corrugated cardboard is arranged directly above the support roller. Three support rollers and three flattening rollers are provided, and each pair corresponds to one support roller. A geared motor for providing power is installed on the side of the frame. A pulley frame for power transmission is installed between the output shaft of the geared motor and the end of one of the support rollers. A pressure adjusting component is provided between the frame and the flattening roller. This component can be adjusted by telescoping to directly change the pressure of the flattening roller on the corrugated cardboard. The operator can adjust the flattening pressure in real time according to the thickness, flute type, and material hardness of the cardboard: for thicker, harder double / triple corrugated cardboard, the pressure can be increased to ensure a smooth surface; for thinner, easily deformable single / E-flute cardboard, the pressure can be reduced to avoid corrugation crushing.

The utility model discloses a laser transfer film pasting and copying device which comprises a rack, the unwinding mechanism is used for unwinding a thin film from a reel and stably conveying the thin film to the next production link, the winding mechanism can wind the thin film into a roll material in a mechanical mode, the coating mechanism is used for coating the thin film, the drying mechanism is used for drying a coating, and the guide roller is used for guiding the thin film. The laminating mechanism is used for laminating the thin film; the curing mechanism is used for curing the thin film; the scraping plate is used for scraping redundant paint on the thin film; through the integrated design and the automatic production process, the production efficiency of laser transfer manufacturing is greatly improved; the stability and the plumpness of the laser effect are ensured by the coating mechanism and the laminating mechanism, and the overall quality of a product is improved; and due to the improvement of the production efficiency and the stability of the product quality, the production cost and the rejection rate are reduced.

This invention relates to the field of edge banding machine technology, specifically to an angle-adjustable edge banding machine end-cutting mechanism, including a conveying assembly, a frame, two oblique guide structures, and two angle-adjustable cutting assemblies. Two oblique supports are provided on the frame, tilting downwards from left to right, with one oblique support located to the upper right of the other. The angle-adjustable cutting assembly includes a first mounting base, a second mounting base, a motor displacement drive component, a motor, a blade, a first mounting base drive component, a third mounting base drive component, a third mounting base, a second mounting base drive component, and a fourth mounting base. Its advantages include rapid switching between straight and oblique cutting modes, no need for manual screw adjustment, significantly shortened changeover time, good cutting effect, significantly improved safety, the ability to reserve edge banding tape, reduced scrap rate in subsequent processes, stable structure, and high adjustment precision.

The utility model provides a cutting structure for MOS (Metal Oxide Semiconductor) packaging production, which relates to the technical field of cutting and comprises a transmission machine, a cutting assembly, a cutting mechanism and a cutting mechanism, and the cutting assembly is arranged at the upper part of the transmission machine; the linkage assembly synchronizes the working speed of the transmission machine and the working speed of the cutting assembly; the motor drives the conveyor and the cutting assembly through the linkage assembly to conduct automatic same-speed conveying and cutting actions, the linkage assembly comprises a first rotating wheel fixed to the output end of the motor, and the first rotating wheel is in belt transmission with a double-layer rotating wheel fixed to one end of a driving shaft of the conveyor. The double-layer rotating wheel is further in belt transmission with a second rotating wheel fixed to a driving part of the cutting assembly. By means of the technical scheme, the linkage assembly is driven by the motor to synchronize movement of the transmission machine and the cutting assembly, it is ensured that the transmission precision and the cutting precision of the base materials are consistent, the rolling distance of the cutting knife is adjusted through the sliding plate and the screw, and different base material size requirements are met.

The utility model relates to valve machining technical field, especially a new type valve cover. Including base, annular pipe, reinforcing surface, fixed ring and annular groove, the annular groove sets up in the base body center position, two fixed ring respectively set up on the base body, and two fixed ring respectively are close to base body both ends setting, the annular pipe sets up in the base upward operation surface. Including raw material detection, heating and material preparation, making embryo and forging, intermediate detection, trimming and shaping, cooling and cutting, welding and processing, final detection, cleaning and polishing, equipment maintenance, the utility model has the beneficial effect that: through the close connection of annular pipe and annular groove, the sealing performance of valve cover is promoted, effectively prevents medium leakage, through strict raw material detection and each link quality detection, can effectively improve the quality of valve cover, enhances its sealing property and pressure resistance, reduces the occurrence of product failure and leakage problem.

The utility model relates to the technical field of vehicle-mounted electric control cover plate die-casting, and discloses a new energy vehicle-mounted electric control cover plate die-casting device which comprises a die-casting device body, a baffle is fixedly connected to the left side of the top of the die-casting device body, a die-casting mechanism is arranged at the top of the die-casting device body, and a base is fixedly connected to the bottom of the die-casting device body. A collecting mechanism is arranged at the bottom of the die-casting device body, the die-casting mechanism comprises a die-casting assembly and a stirring assembly, the die-casting assembly is arranged at the top of the die-casting device body, and during use, through the arranged die-casting mechanism, when a vehicle-mounted electric control cover plate needs to be subjected to die-casting work, a first servo motor drives a first threaded rod to rotate; the hydraulic cylinder pushes the push plate, raw materials in the conveying pipe stably and accurately enter the first die, the right side of the second die makes close contact with the left side of the first die, and the sealing performance of the dies in the die casting process is guaranteed.

The utility model discloses a carbon fiber winding device, including cross -motion mechanism, winding mechanism, yarn spreading mechanism etc. The spacing roller of yarn spreading mechanism, deflection roller, flat roll cross -setting, cooperate cross -motion mechanism servo drive screw rod subassembly, realize different K number carbon silk multi -angle tension regulation and accurate flattening, evenly cover 100-500mm bobbin, and winding mechanism passes through the slidable upper slide and the winding shaft recess snap, and adapts to multi -specification bobbin, and yarn spreading roller subassembly matches different carbon silk technology. Servo motor drive, bearing low friction rotation and sensor stroke protection promote the stability of operation, and the clamping of silk piece subassembly, button board etc. Enhance the operation convenience and equipment rigidity. The device solves the problem of traditional equipment tension instability, poor versatility etc., reduces the scrap rate, and improves the winding efficiency, and is suitable for the precision production of high -end equipment manufacturing field high -performance carbon fiber.

The utility model relates to the technical field of pull ring production, in particular to ultrathin pull ring continuous production equipment with a tension control function. The equipment is mainly composed of a rack, a discharging winding roller, an adjusting roller, a horizontal roller, an upper stamping die, a lower stamping die, a tension adjusting block, a motor and the like, raw materials are placed on the discharging winding roller, the adjusting roller and the horizontal roller guide the materials to be conveyed, the upper stamping die and the lower stamping die are responsible for pull ring stamping forming, and the tension adjusting block regulates and controls the tension of the materials. The motor drives the waste roller and provides power for the conveying belt through belt transmission, and a spring and a sliding block in the tension adjusting block are matched with the tension adjusting switch to achieve accurate tension adjustment. The tension control device has the beneficial effects that the product quality can be stabilized, the defects of the pull ring caused by the tension problem are reduced through accurate tension control, the product percent of pass is improved, and meanwhile, the continuous production process of equipment is matched with an efficient waste treatment and finished product collection mode, so that the production efficiency is greatly improved, the production cost is reduced, and the market competitiveness of enterprises is enhanced.

This utility model relates to the field of coating processing technology and discloses a tension-adjustable water transfer paper coating device, including a machine base. An infrared receiver and an infrared transmitter are symmetrically fixedly connected to the top left side of the machine base. A mounting frame is fixedly connected to the top inner wall of the machine base. A cylinder is fixedly connected to the upper inside of the mounting frame. Two third slide grooves are symmetrically fixedly connected to the upper inside of the mounting frame. A second slider is slidably connected to the inner wall of each third slide groove. A mounting plate is fixedly connected to the bottom surface of the cylinder. The top surface of the mounting plate is fixedly connected to the bottom of each second slider. A blade is installed on the bottom left side of the mounting plate. A support column is fixedly connected to the bottom of the other side of the mounting plate. A second spring is sleeved on the outer wall of the support column. The bottom of the support column is slidably connected to the inside of the rubber roller to prevent unwound material from detaching from the roller during rewinding, thus preventing material deformation and reducing scrap rate.

The application discloses a mechanical clamp jaw with anti-deviation positioning function and relates to the technical field of mechanical clamp jaws.The mechanical clamp jaw comprises two groups of jaw bodies arranged in the interior of an assembly body and used for assisting in clamping assembly of a direct-current contactor.The direct-current contactor comprises an upper shell and a lower shell.The mechanical clamp jaw triggers an inner elastic support structure through a clamping process linkage, can support the inner wall of a weak recessed opening of the upper shell of the direct-current contactor by a support plate when clamping the upper shell, effectively balances clamping extrusion force, restricts the inward collapse and distortion of the opening edge, accurately maintains the original size and shape of the opening, guarantees the basic matching precision of the openings of the upper and lower shells, and automatically completes the accurate alignment and communication of the openings of the upper and lower shells by relying on an anti-deviation positioning assembly to adaptively rotate and correct the lower shell with placement deviation during the assembly butt joint process of the shells, so that the problems of shell clamping deformation, assembly alignment deviation and assembly failure that are prone to occur in traditional clamp jaws are solved.

An overlock machine for processing mattresses includes: a sewing machine, a worktable, a mattress support platform, a conveyor belt, a transmission guide device, a vacuum adsorption structure, and a placement area. The sewing machine is fixed to the worktable, which is symmetrically arranged on both sides of the mattress support platform. The conveyor belt is mounted on the mattress support platform. The transmission guide device is located between the mattress support platform and the worktable. The vacuum adsorption structure is located below the mattress support platform. The placement area is connected to the end of the mattress support platform. The transmission guide device includes: a baffle, a baffle bracket, rollers, a fixing plate, and an adjusting screw. Compared with traditional technologies, this invention, tailored to the characteristics of mattresses, adds a transmission structure, a transmission guide device, and a vacuum adsorption structure. Through automated movement, it ensures a certain fixing force, reducing the difficulty of worker operation, improving the straightness of the overlock process, and reducing the scrap rate.

A side panel assembly and a vehicle are disclosed. The side panel assembly (100) includes an outer side panel (10) and an inner side panel (20) sequentially arranged and fixedly connected along the direction from the outer side of the vehicle door to the inner side. The side of the inner side panel (10) away from the outer side panel (20) is connected to the side assembly (200). The lower ends of the outer side panel (20) and the inner side panel (10) together define a mounting structure (30) for mounting a window frame sealing strip (60). A vehicle including the above-described side panel assembly (100) is also provided. The side panel assembly (100) and the vehicle can improve the aesthetics of the vehicle and reduce costs.

The utility model provides a kind of automatic alignment assembly device of single fuse and terminal cap, it is related to equipment technical field, and it includes: connecting piece, mould, guide component, pneumatic accessory and product material;Connecting piece includes base, dome, first lower connecting block, first upper connecting block, second lower connecting block, second upper connecting block and lower mould fixed block;Product material includes terminal cap and single fuse semi-finished product;Mould includes lower mould and upper mould;Dome and upper mould hole are located on the opposite face of upper mould respectively.Block hole, lower mould cavity, upper mould hole, dome are coaxial setting;Guide component includes first guide pillar, second guide pillar, first linear bearing, second linear bearing;First upper connecting block and second upper connecting block are fixedly connected with upper mould;Lower mould is provided with lower vent hole that is communicated with lower mould cavity;Upper mould is provided with upper vent hole that is communicated with upper mould hole;Pneumatic accessory is connected with lower vent hole and upper vent hole respectively.Improve production efficiency and product yield.

The utility model provides a multi-station press machining system, and belongs to the technical field of machining equipment. The problem that in the prior art, a press is low in automation degree is solved. The multi-station press machining system comprises a rack and a rotating station module connected to the rack, and the rotating station module comprises a rotating disc and a power assembly used for driving the rotating disc to rotate in an indexing mode; the at least two workpiece fixing modules are connected to the rotary table, and each workpiece fixing module is provided with a machining station used for containing a workpiece; the stamping execution module is connected to the rack, and the stamping execution module comprises a stamping execution piece and a stamping driving piece used for driving the stamping execution piece to move up and down in the vertical direction; and the at least one workpiece transfer module is connected to the rack, and the output end of the station transfer module is provided with a clamping jaw used for feeding unmachined workpieces and discharging machined workpieces. The device has the advantages of high efficiency and automation.

The utility model provides a film tearing and exhausting synchronizing device of an automatic film sticking machine, which comprises a machine body, a film tearing mechanism and a pushing and exhausting mechanism, a top plate of the machine body is provided with a working area and a positioning block, the working area can be used for positioning and fixing a product to be subjected to film sticking, and the positioning block is arranged on the outer side of the working area and can be used for positioning a film sticking material; the film tearing mechanism is arranged at the rear end of the machine body and can pull the second release film to be gradually separated from the protective film from front to back; the pushing and exhausting mechanism is arranged on the machine body in a front-back moving mode and can synchronously push and press the separated protective film to be attached to a product to be subjected to film attaching from front to back in the separation process of the second release film and the protective film of the film attaching material, and air below the attaching face of the protective film is exhausted. By the adoption of the film pasting device, automatic film pasting operation is achieved, bubbles and dust can be prevented from entering the film pasting device to a great extent, the requirements for reworking, film tearing and re-pasting are reduced, time is saved, and the rejection rate of protective films is reduced.

This utility model relates to the field of glass processing technology, and in particular to a fully automatic integrated glass bonding and gluing machine. The fully automatic integrated glass bonding and gluing machine includes: a base, a glass body placed on top of the base, an electric push rod fixedly connected to the top of the base, an extrusion plate fixedly connected to the output end of the electric push rod, adjusting plates equidistantly installed on the top of the base, a first clamping plate fixedly connected to the side of the adjusting plate closest to the glass body, a second clamping plate fixedly connected to the side of the adjusting plate closest to the glass body, a scraper plate installed between multiple sets of corresponding first and second clamping plates, a driving component for moving the adjusting plates, a reciprocating component for reciprocating movement of the scraper plate installed inside the multiple sets of first clamping plates, and an adjusting component for changing the position of the adjusting plates. The fully automatic integrated glass bonding and gluing machine provided by this utility model has the advantages of precise clamping, automatic scraping, and flexible adjustment.

The present application relates to the technical field of light pipe assembly, and discloses an X-ray light pipe flange packaging process, which comprises the following steps: placing a light pipe module in a vacuum environment; using an automatic grabbing mechanism to complete assembly; using an automatic screwing mechanism to tighten the flange bolts in a diagonal cross and step-by-step pre-tightening sequence, and monitoring the vacuum degree in real time; using a sensor group to collect multi-dimensional process parameters such as torque, angle, vacuum degree change rate, flange vibration and temperature in real time; a central control system judges the thread state according to the torque-angle curve, judges the sealing state according to the vacuum degree change rate, analyzes the contact uniformity according to the vibration characteristics, and corrects the target torque value according to the temperature data; when the judgment result exceeds the threshold value, an automatic alarm is given and a correction instruction is executed; through multi-parameter real-time monitoring and closed-loop control, the present application realizes instant identification of bolt tightening abnormalities, temperature compensation correction of torque, online early warning of vacuum leakage and full-process data tracing.

This invention discloses a medium carbon steel for steering screws in new energy vehicles and its production method. The chemical composition of the medium carbon steel, by mass percentage, is as follows: C: 0.45%~0.70%, Si: 0.25%~0.55%, Mn: 0.45%~1.05%, Cr: ≤0.40%, Mo≤0.40%, Ni≤0.40%, P≤0.035%, S: 0.015%~0.035%, O≤0.0012%, with the balance being Fe and unavoidable impurities. The production method includes a complete process: molten iron pretreatment – ​​converter smelting – LF refining – RH furnace vacuum degassing – continuous casting – rolling – quenching and tempering – finishing – sub-critical quenching – low-temperature tempering. By controlling the composition to reduce the addition of expensive alloying elements, and through a composite heat treatment of "quenching and tempering + sub-critical quenching + low-temperature tempering," a hardness gradient of ≥60HRC on the surface and 22~28HRC in the core is achieved, with no decarburized layer on the surface. Simultaneously, strict control of non-metallic inclusions enhances the purity of the steel. This invention's product is compatible with cyclone milling processes, exhibits minimal quenching deformation, and can be straightened, meeting the high precision and long service life requirements of steering screws in new energy vehicles.

The utility model relates to the technical field of round steel processing, in particular to a round steel shearing device which comprises a rack and a bearing frame, a transfer frame is arranged at the top of the rack, a plurality of roll shafts are installed in the transfer frame, a first servo air cylinder is arranged at the top of the bearing frame, and a second servo air cylinder is installed on a piston rod of the first servo air cylinder. A piston rod of the second servo air cylinder is provided with a first fixing plate, the side portion of the second servo air cylinder is provided with a second fixing plate connected with the bearing frame in a fastened mode, and the first fixing plate and the second fixing plate are used for stably clamping round steel. And a shearing tool is rotationally installed at the top of the bearing frame, and a storage barrel is arranged at the bottom of the bearing frame and used for storing residues generated after the round steel is sheared off. According to the round steel shearing device, the working efficiency of round steel machining is improved, the working time of shearing round steel is shortened, the requirement for batch machining can be met, the working precision of round steel machining is further improved, the rejection rate of round steel machining is reduced, and therefore it is guaranteed that round steel machining meets the production standard.