53results about How to "Guaranteed axial positioning" patented technology

The invention provides an integrated co-curing forming technology method for a composite material multi-beam box section. The integrated co-curing forming technology method comprises the following steps of: arranging a beam flat plate; pre-forming the beam flat plate; vacuumizing; premounting a beam; arranging an upper wall plate and a lower wall plate; combining the beam; arranging spilling bars; closing the upper wall plate; vacuumizing; extracting a core die; curing the core die; and demolding the core die. The technology method is easy to operate and high in repeatability. In a curing process, the core die is pulled out; the openness of a manufactured piece is high; heat conduction and temperature uniformity are facilitated; and the inner quality of the manufactured piece is easy to guarantee.

The invention provides a rapid-replacement high-precision gang cutter and a machining method thereof. The rapid-replacement high-precision gang cutter comprises a cutter head and a cutter handle. The cutter head is provided with four cutting edges, chip grooves, an avoiding part and a high-speed steel base body from the end to the tail in sequence. The four cutting edges are symmetrically arranged at the end of the cutter head in pairs. The chip grooves are located between every two adjacent cutting edges. Each cutting edge comprises a cutting edge body I, a cutting edge body II and a cutting edge body III, and the cutting edge body II is arranged between the cutting edge body I and the cutting edge body III. The avoiding part is arranged behind the cutting edge bodies II. The avoiding part and the high-speed steel base body are fixed through high-temperature welding. The high-speed steel base body is internally provided with an axial positioning hole, a threaded hole and a radial positioning part. The axial positioning hole is formed in the front end of the threaded hole. The front end of the cutter handle is provided with a screw rod matched with the threaded hole. Through the replaceable structural design, materials for machining of the cutter are saved, and the economical performance is high; through the design of the positioning part, the precision of repeated positioning can be improved, and the cutter replacing efficiency can be improved.

The invention relates to a high-thrust tubular linear motor which comprises a stator shell, a stator and a rotor. The stator is coaxially and fixedly mounted in the stator shell, the rotor is coaxially and slidably mounted in an inner cavity of the stator, the stator comprises silicon steel sheets and windings which are arranged at intervals and fixedly mounted on the stator shell, the rotor comprises a rotor shaft, permanent magnets and magnetic conduction rings, and the permanent magnets and the magnetic conduction rings are arranged at intervals on the rotor shaft. The high-thrust tubular linear motor is characterized in that the rotor shaft is made of hollow soft magnetic materials, a copper tube is coaxially sleeved outside the rotor, the windings and the silicon steel sheets are fixedly mounted at intervals to form the stator, and the windings and the silicon steel sheets correspond to the permanent magnets and the magnetic conduction rings of the rotor. The high-thrust tubular linear motor is ingenious in design, reasonable in structure, large in starting force, fine in tightness and reliable in operation.

The invention provides a double-screw rod kneading device, relates to a kneading device, and is applied to the production fields such as oil, chemical industry, rubber, plastics, pharmacy, food, etc. The double-screw rod kneading device comprises a motor, a rack, a gear box, a cylinder and a screw rod rotor mechanism. The prime power offered by the motor is subjected to speed reduction and power division by the gear box and is finally transmitted to a double-screw rod rotor in the kneading device, so that the rotation of the device reaches a work status. The gear box of the kneading device mainly comprises a two-stage reducer drive mechanism and a sliding gear set with three gears such as 1: 1, 1: 2 and 1: 4; and in the cylinder and the screw rod rotor mechanism, the two screw rod rotors which are meshed with each other are arranged in the cylinder, and the screw rod rotor mechanism comprises three male screw rod rotors and three female screw rod rotors. The double-screw rod kneading device is simple and compact in structure, so that the different outputs can be realized by adjusting the gears of the sliding gear set according to the different head number ratios of the screw rod rotors, the use requirement of the double-screw rod rotor with different head number ratios can be met, and the use range of the double-screw rod kneading device is widened.

The invention relates to an eccentric shaft control system of a complete-variable air valve lift mechanism. An engine cylinder cover (7) is provided with a bearing seat (5); the bearing seat (5) is provided with an eccentric shaft (4); the eccentric shaft (4) is provided with an eccentric wheel (43); a worm (12) is installed on a rotor of a motor (1); a worm wheel (14) is fixedly connected to an eccentric shaft neck (44); and during the meshing process of the worm (12) and the worm wheel (14) driven by the motor (1), through the effect of an angle limiting device, the adjustment of an adjustment air valve from zero to the maximum value can be realized through the rotation changes of the eccentric shaft (4) from zero to 180 degrees. According to the invention, because the rotation changes of the eccentric shaft from zero to 180 degrees are controlled by the angle limiting device, the adjustment of the adjustment air valve from zero to the maximum value can be realized, and the accurate regulation and control, and prevention of system failure are ensured, so that the reliability of the engine is strengthened.

The invention relates to the technical field of machining and particularly relates to a hydraulic elastic chuck and a clamping method thereof. By pushing a sealing plunger to pressurize hydraulic fluid, a thin wall deforms and expands outwards, claws at the front end of the thin wall are driven to stretch outwards, and the claws loosen workpieces or clamp the workpieces. The structure is simple, the production cost is low, and the operation is flexible. The clamping of the workpieces is convenient, the machining precision of the workpieces is improved, and the production efficiency is increased. According to the machining method of the hydraulic elastic chuck, after the hydraulic elastic chuck is fixedly arranged on a machine tool spindle, machining is carried out on the outer sides and/orinner sides of the claws, and a ring formed by a plurality of claws which get together is highly concentric with the machine tool spindle, so that the machining precision can be improved; and then, through locating structures on the claws, the to-be-machined workpieces are precisely located in axial, radial and rotating directions, so that when the same batch of workpieces are massively produced,the initial machining position points of all workpieces are ensured to be the same, and the machining precision during the mass production of the products is improved.

The invention discloses an inner and outer shaft transmission device for a driving wheel. The device comprises an elastic crawler belt, the left end of the elastic crawler belt is connected with the wheel through a shaft, and the right end of the elastic crawler belt is connected with an expanding mechanism in a sliding mode through a transmission shaft; the right end of the expanding mechanism isin shaft connection with an inner shaft, the inner shaft is arranged in an outer shaft, and a swing arm is arranged between the right end of the outer shaft and the expanding mechanism; the outer surface of the outer shaft is further connected with a speed reduction gear set through a bearing block, a speed reducer is further arranged at the right end of the speed reduction gear set, and the input end of the speed reducer is driven by a motor; the bearing block is arranged at the right end of the swing arm. The structural form composed of the inner shaft and the outer shaft is utilized, driving power is transmitted to the inner shaft by the motor through the planetary gear speed reducer integrated with the motor, a wheel-type motion of a whole robot platform is provided, power required bylinear moving, turning and the like of a robot is achieved, the stability is improved, and the obstacle crossing capability is further improved.

The invention discloses a mechanical pressure sensing and locking safety device which comprises an inductive head, a locking mechanism and a guide sleeve. Two ends of the guide sleeve are respectively provided with a guide hole, a latch rod is inserted into the guide sleeve through the guide holes, the inductive head is connected to the guide sleeve and matched with the guide sleeve to form a mounting space, the locking mechanism is arranged in the mounting space and connected with the inductive head and the latch rod, and the inductive head and the locking mechanism control axial locking and unlocking of the latch rod in a matched manner. The mechanical pressure sensing and locking safety device has the advantages that the device is compact in structure, reliable in action execution, convenient to mount, applicable to occasions with sanitary and anti-explosion requirements and passive sites, high in safety and sensitive in response, and can be automatically locked and unlocked.

The invention relates to a double-inclined hydraulic type coating trolley system of a marine pipeline concrete balance weight. The double-inclined hydraulic type coating trolley system comprises two opposite coating trolleys and a straight line moving system for enabling the coating trolleys to walk. Each coating trolley is mainly composed of a height adjusting system, a rotating movement system and a pipeline pressing system. Taking one coating trolley as an example, the height adjusting system is located in the middle of the coating trolley, the rotating movement system is arranged at the top end of the height adjusting system, the height adjusting system is composed of a chute, a supporting column and two hydraulic cylinders, wherein the two hydraulic cylinders can be self-locked and are opposite to each other in an inclined mode, and an included angle from 60 degrees to 70 degrees is formed by the two hydraulic cylinders and the horizontal plane. The height and the wheel track of supporting wheels can be adjusted at the same time according to the fact that pipelines with different pipe diameters are retracted with different lengths. A pressing hub is pressed on the outer surface of the end portion of one pipeline and can rotate with the pipeline, and the pipeline can be prevented from jumping. The double-inclined hydraulic type coating trolley system can be suitable for the balance weight production requirement of serialization pipelines, and the purposes that the speed of the pipelines is adjustable and the direction of the pipelines is controllable are achieved.

The invention discloses a power drive device of a coal winning machine cutting part. The power drive device comprises a power source module arranged at the end part of a rocker arm and a speed reducing module arranged in a roller, wherein the power source module comprises a motor and a dynamic coupling wheel train, the motor is connected with a frequency converter by virtue of a cable; the dynamic coupling wheel train comprises a drive gear, an idle pulley and a drive gear ring; the drive gear is positioned at the inner side of the drive gear ring and fixedly sleeves an output shaft of the motor; the speed reducing module is a planetary gear train and comprises a sun wheel, a planetary gear, a planetary carrier and a speed reducing gear ring, wherein the sun wheel fixedly sleeves a drive shaft, and the speed reducing gear ring is fixedly connected with the roller. According to the power drive device, a drive chain is shortened, short-range and high-efficiency transmission of power is realized, the adaptability of a coal winning machine to a varied coal bed is improved, and a coal winning machine drive system is high in modularized degree, and convenient to assemble and maintain.

The invention relates to a machining tool, in particular to a multifunctional combined tool special for machining of stepped holes. The multifunctional combined tool special for machining of stepped holes comprises a tool holder and blades. The blades include an end machining blade and a radial machining blade. One end of the end machining blade and one end of the radial machining blade are provided with stepped hole machining teeth in step forms. The end of the tool holder is provided with a clamping channel and a bit positioning hole. A bit is disposed inside the bit positioning hole. The clamping channel comprises a first clamping part used for clamping the end machining blade and a second clamping part used for clamping the radial machining blade. The first clamping part locates on the diametric section of the tool holder. The lower end face of the second clamping part and the upper end face of the first clamping part locate in a same plane. One end of the end machining blade, close to the radial machining blade, is parallel to the axis of the tool holder. The multifunctional combined tool has the advantages that the diametric part of each segment of a stepped hole can be machined once, and the end face and diametric part of the stepped hole can be machined at the same time.

The invention discloses a half-mold rotating window mechanism. The mechanism comprises a balance and a balance seat in a main wheel; the balance is arranged on the balance seat; a wedge block is tightly supported between the balance seat and the main wheel; and a tensioning assembly is arranged between the wedge block and the main wheel. According to the half-mold window rotating mechanism,the sliding adjustment of the balance seat is realized through a lead screw nut and a lead screw, and the axial positioning of the balance can be ensured; the wedge block is supported between the main wheel and the balance seat, so that the balance seat is effectively locked, and meanwhile, a block groove has a circumferential limiting effect; the lead screw assembly is located below the balance seat, the wedge block assembly is located above the balance seat, the two assemblies cooperate with each other, so that the sliding and fixing of the balance seat can be achieved, axial and circumferential displacement precision of the balance seat is guaranteed through the cooperation of the lead screw assembly and the wedge block assembly;and it is guaranteed that the overall structure of the mechanism is high in precision and stability.

The invention discloses a tube machining tool and belongs to the technical field of tube machining. The tube machining tool is characterized in that the tube machining tool comprises a rotary shaft (1) which axially penetrates into a tube in a sleeved mode, and two or more sets of tube supporting devices mounted on the rotary shaft (1); the rotary shaft (1) coaxially penetrates into the two sets of tube supporting devices in a sleeved mode; and tube connecting mechanisms used for being fixedly connected to the inner wall of the tube are arranged on outer rings of the tube supporting devices, and inner rings of the tube supporting devices are connected with the rotary shaft (1) through position adjusting mechanisms. The mounting mode during tube machining is changed, the rotary shaft is connected to a rotating shaft of a machining tool, the two sets of tube supporting devices are fixed to the inner sides of the two ends of the tube correspondingly, and the tube can be driven to synchronously rotate together; all machining needs of the tube face and the two end faces of the whole tube can be met through one-time mounting, midway dismounting is not needed, the machining position is replaced, the machining precision is improved, and axial positioning of the tube is ensured; and meanwhile trouble of dismounting and mounting for multiple times is omitted.

The present invention relates to a piston (10) for an internal combustion engine, comprising a piston head (11) and a piston skirt (16), with a cooling channel (15) arranged in the piston head (11) and with at least one bore (17) opening into the cooling channel (15), a conduit (18) for a cooling oil jet (A) being housed in said bore. According to the invention, a jet divider (19) is arranged at the first free end (18a) of the conduit (18) and, in the area of the second free end (18b) of the conduit (18), the outer lateral surface of conduit (18) has a contact surface (24) that lies, secured against torsion, against an inner surface (25) of the piston (10).

The invention discloses a manufacturing method of a composite core shaft for a lightweight spherical hinge. The composite core shaft for the lightweight spherical hinge comprises a metal core shaft and a winding segment fixed to the middle segment of the metal core shaft, and the outer wall of the winding segment is an outward convex spherical face with the diameters gradually increased from the two ends to the middle. The method comprises the manufacturing steps that according to the lightweight requirement of the lightweight spherical hinge, the weight proportion of the metal core shaft andthe winding segment is designed, and the sizes of the metal core shaft and the winding segment are designed out according to the weight and size requirements of the lightweight spherical hinge; the metal core shaft is manufactured, and a locating structure used for carrying out axial locating on the winding segment is machined in the middle segment of the metal core shaft; and resin infiltrated glass fibers are wound to the middle segment of the metal core shaft through a winding process, after winding, resin gelling and curing forming are carried out, and then the winding segment meeting thesize design requirement is formed through machining. The mass of the core shaft is relieved, axial locating of the winding segment and the metal core shaft is guaranteed, and the use performance of the spherical hinge is not influenced while lightweight operation is achieved. The invention further provides the lightweight spherical hinge.

The invention discloses a light-source-strip attaching device, and particularly relates to an automatic lamp-tube light-source-strip attaching device and method. An elastic-film reversing tool comprising a circular-truncated-cone-shaped limiting groove and a third circular limiting groove is arranged, the limiting grooves are communicated with each other, an elastic-film curling mechanism is correspondingly arranged at an inlet of the circular-truncated-cone-shaped limiting groove, a lamp-tube positioning mechanism is correspondingly arranged at an outlet of the third circular limiting groove,and a light-source-strip positioning block is arranged at the upper portion of the elastic-film curling mechanism. During working, an elastic film becomes curly through the elastic-film curling mechanism, a light source strip and the curled elastic film are attached through the light-source-strip positioning block and enter the circular-truncated-cone-shaped limiting groove, and the elastic filmand the light source strip are limited to be in a tight cylindrical shape and are conveyed to the lamp tube positioning mechanism for strip attaching. Automatic production including fixing of the lamptube, curling of the elastic film and installing of the light source strip into the lamp tube is achieved, production efficiency is high, and the problems that efficiency of manual strip attaching islow, and automatic batch production cannot be achieved are solved.

The invention relates to a positioning and supporting structure of a helical planetary gearbox for a pure electric passenger car. By the adoption of the positioning and supporting structure of the helical planetary gearbox of the pure electric passenger car, the problems that an existing single-stage planetary transmission mechanism of the helical planetary gearbox of the pure electric passenger car is large in structural size, a sun gear assembly cannot be supported stably, and axial moving and radial swinging occur easily are solved. The positioning and supporting structure of the helical planetary gearbox of the pure electric passenger car comprises a sliding bearing, a thrust bearing, a sun gear assembly, a deep groove ball bearing, a supporting base and a frame. The sliding bearing is pressed in an inner hole in the output end of the frame. An inner hole of the sliding bearing and a shaft neck at the output end of the sun gear assembly are mounted in a clearance fit mode. The deep groove ball bearing is mounted on a shaft neck at the input end of the sun gear assembly. The outer ring of the deep groove ball bearing is in clearance fit with an inner hole of the supporting base. The thrust bearing is close to the position where the sliding bearing is mounted and is mounted between the frame and the sun gear assembly. According to the positioning and supporting structure of the helical planetary gearbox of the pure electric passenger car, planetary components can be supported stably in the radial direction, axial moving caused by bevel gear transmission is prevented, and axial positioning is guaranteed; meanwhile, structural arrangement is facilitated, and the structure is compact.

The invention provides a drilling device of a speed changing drum. The drilling device comprises a bottom plate and an upper mold plate which are parallel to each other; a driving component for driving the bottom plate and the upper mold plate to relatively move is arranged between the bottom plate and the upper mold plate; the bottom plate is provided with a first drilling mold sleeve, and the upper mold plate is provided with a second drilling mold sleeve; the first drilling mold sleeve and the second drilling mold sleeve are provided with coaxial and opposite centers; and the first drilling mold sleeve and the second drilling mold sleeve are each provided with a drilling sleeve and a drill bit installed in the drilling sleeve. According to the drilling device of the speed changing drum, the first drilling mold sleeve and the second drilling mold sleeve are arranged on the bottom plate and the upper mold base which are parallel to each other, the distance between the bottom plate and the upper mold base can be changed, the coaxial and opposite centers are arranged on the two drilling mold sleeves, and hole drilling is carried out through the drilling bits on the two drilling mold sleeves after a speed changing drum prefabricated member is clamped through the centers; hole drilling at the two end faces is carried out at the same time, and other hole drilling operation is not needed; and the hole drilling positioning accuracy is improved, and the corresponding machining rate is improved.

The invention discloses a flow guiding and blocking sealing structure for a high-pressure turbine disc rear bearing cavity. A sealing seat is used for the sealing position of the high-pressure turbinedisc rear bearing cavity. The sealing seat is provided with a discrete ventilation flow channel, so that introduction and circulation of low-temperature gas are guaranteed; an annular gas guide cavity is formed, so that low-temperature gas is guided, high-temperature gas is blocked, and it is guaranteed that the low-temperature gas enters the high-pressure turbine disc rear bearing cavity; a wear-resistant coating such as graphite and silver-copper is formed, so that when a sealed rotor and a sealed stator are scraped and worn, high temperature is not generated, softening materials such as graphite or silver-copper fall from the scraped and worn rotor and stator, and a bearing cannot be damaged even if the materials enter the bearing cavity; a sunken groove structure is arranged, so thatthe sealing seat and a force bearing casing are fixed on the premise of not occupying space; and discrete bosses are arranged, so that the weight is reduced while axial positioning of a bearing outerring is ensured.

The invention relates to a masonry chisel sheath, a masonry chisel and a quick disassembly and assembly method of the masonry chisel. The masonry chisel sheath includes a hand protecting plate and a handle. The hand protecting plate is installed on the handle, and the handle is provided with a mounting hole for inserting a chisel rod of the masonry chisel. The handle is divided into two parts which are a left half handle and a right half handle. The left half handle and the right half handle are connected together by a fastening sleeve to form the handle. The masonry chisel includes the chiselrod of the masonry chisel, a chisel head is arranged at the lower end of the chisel rod of the masonry chisel, and the masonry chisel sheath is installed at the upper end of the chisel rod of the masonry chisel. A circle of concave positioning groove is machined in the chisel rod of the masonry chisel in the circumference direction of the chisel rod. A left half mounting hole of the left half handle is internally provided with a positioning protrusion matched with the concave positioning groove and playing an axial positioning role on the chisel rod of the masonry chisel. The rapid disassembly, assembly and replacement of the masonry chisel sheath and the chisel rod of the masonry chisel are realized, from the perspective of a user, all the masonry chisels with the same shapes of the chisel rods of the masonry chisels need only be equipped with one masonry chisel sheath, and the cost is saved.

The invention relates to a novel adjusting platform for milling and grinding. The novel adjusting platform for milling and grinding can conduct vacuum absorption. In order to improve the workpiece locating accuracy in the milling and grinding process, the vacuum absorption adjusting platform is designed. Fine adjustment of angles of components to be milled and ground is achieved on the premise that the vacuum absorption capacity is guaranteed, and radial accurate locating of the components with different calibers can be ensured. The vacuum absorption adjusting platform can conveniently work on a milling and grinding machine, and replaces a universal vacuum absorption clamp. An adjustable and controllable angle adjustment freedom degree is added to the milling and grinding initial position of a workpiece, the axial non-uniform deformation of the workpiece, especially an O-shaped sealing ring, in the vacuum absorption process is compensated for, and therefore the locating accuracy of milling and grinding operation is improved, and the milling and grinding accuracy is further guaranteed. By the adoption of the vacuum absorption adjusting platform, high-accuracy repeated locating of the optical components can be achieved, the rule of the influence of milling and grinding technological parameters on the milling and grinding machining process can be conveniently explored, and the vacuum absorption adjusting platform has the great advantage of achieving milling and grinding application of the optical components with special requirements for indexes such as the parallelism, the concentricity and the edge thickness difference.