1679 results about "Roller bearing" patented technology

The invention belongs to the technical field of bearing fault diagnosis, and discloses a self-aligning roller bearing fault diagnosis method and system, and the method comprises the steps: obtaining operation data and sensor data, carrying out the simulation through a digital twin model, calculating the deviation between model prediction and actual measurement, and carrying out the mode recognition according to the deviation. Digital twin model parameters are dynamically calibrated in a normal mode, fault type identification and bearing positioning are carried out in combination with the calibrated model in an abnormal mode, accurate diagnosis of new installation and bearing faults in a running-in period is realized, dynamic calibration of the digital twin model parameters is realized, normal deviation and abnormal deviation are distinguished, and fault diagnosis accuracy is improved. The accuracy of fault diagnosis in the new installation and running-in period is improved, and fault type recognition and fault bearing positioning are achieved.

The invention discloses a folding wing structure of an unmanned aerial vehicle, which comprises a rotating shaft embedded in a vehicle body, wherein a lower wing elastic sheet and an upper wing elastic sheet are mounted in an inner cavity of the rotating shaft from bottom to top, a first locking block and a second locking block are respectively arranged at the free ends of the lower wing elastic sheet and the upper wing elastic sheet, the first locking block and the second locking block are respectively matched with a first notch and a second notch which are formed in the rotating shaft, the outer side of the rotating shaft is sequentially sleeved with a lower wing and an upper wing from bottom to top, the upper surface of the lower wing and the lower surface of the upper wing are each provided with a groove, the two grooves are oppositely formed to form a torsional spring groove, a torsional spring is arranged in the torsional spring groove, and the upper inner sides of the lower wingand the upper wing are provided with a first locking groove and a second locking groove correspondingly; and the outer side of the rotating shaft is further sleeved with a roller bearing, a baffle isinstalled at the top of the rotating shaft, and the roller bearing is located between the upper wing and the baffle. The processing cost of the unmanned aerial vehicle is reduced, the folding wing structure is insensitive to the structural size, and the folding wing structure can adapt to a more miniaturized barrel-shooting unmanned aerial vehicle.

The invention relates to the technical field of bearings, and particularly discloses a high-precision cylindrical roller bearing for an industrial robot, the high-precision cylindrical roller bearing comprises a first shaft sleeve, a second shaft sleeve and a spacer bush, the first shaft sleeve and the second shaft sleeve are located on the inner side and the outer side of the spacer bush respectively, a roller is arranged on the surface of the spacer bush, and the outer surface of the roller is in rotating contact with the first shaft sleeve and the second shaft sleeve respectively; and a compensation assembly is arranged on the inner side of the spacer bush and comprises a guide groove formed in the inner side of the spacer bush, a movable frame is slidably connected to the inner side of the guide groove, and a movable plate is fixedly connected to the outer surface of the movable frame. By arranging the compensation assembly, when the lubricating wheel is abraded, the movable frame moves towards one side close to the roller under the elastic force action of the double metal plates, and the reciprocating lead screw drives the lubricating wheel to synchronously move, so that the lubricating wheel is always attached to the surface of the roller, and a good lubricating effect can be continuously achieved on the bearing; and the influence of abrasion of the lubricating wheel on the lubricating effect of the bearing is reduced.

A hinge assembly for a bed includes a hinge guide assembly connected to a head section of the bed, and a bed frame assembly mounted portion connected to the bed frame assembly. The hinge guide assembly forms curved guide tracks that receive roller bearings mounted to the bed frame assembly mounted portion. The connection between the hinge guide assembly and roller bearings results in angular rotation of the head section relative to the bed frame assembly.

The invention relates to the technical field of belt conveyors, and discloses an intelligent tensioning control method and system for a belt conveyor. According to the method and system, a dynamic mathematical model is constructed by collecting the current, rotating speed and torque parameters of a driving motor and combining hydraulic cylinder pressure and turnabout drum bearing force data, and high-precision indirect estimation of belt tension is achieved; a progressive adjustment strategy is adopted, the displacement of the hydraulic cylinder is dynamically adjusted according to tension deviation, mechanical abrasion is reduced, and system reliability and severe environment adaptability are improved. The method has the beneficial effects that the tension control error is reduced, the hydraulic action frequency and the maintenance cost are reduced, and meanwhile, the operation efficiency and safety of the conveyor are improved.

The utility model provides a double-rigid-gear harmonic speed reducer with a torque sensing function, which relates to the technical field of speed reducers and comprises a wave generator, a flexible bearing, a flexible gear, an output end rigid gear, a crossed roller bearing and a fixed end rigid gear. The crossed roller is arranged between the bearing outer ring and the output end rigid wheel, the output end rigid wheel serves as an inner ring of the crossed roller bearing, and the fixed end rigid wheel is detachably and fixedly connected with the bearing outer ring; the two end faces of the fixed end rigid wheel are each provided with a receding groove coaxial with the fixed end rigid wheel, a connecting wall is formed between the bottoms of the two receding grooves, and a plurality of strain gauges arranged in a circumferential array mode are installed at the position, close to one side of the output end rigid wheel, of the bottom of the receding groove. The elastic strain gauge is embedded in the rigid fixed end rigid wheel, so that the fixed end rigid wheel has a torque sensing function, the axial thickness of the harmonic speed reducer is not increased, and the use requirements of more occasions are met.

A crossed roller bearing and an isolation block belong to the technical field of bearings, and are characterized in that oil storage holes are respectively formed in the centers of contact surfaces of two rollers; the four vertical surfaces are respectively provided with a guide oil groove, and the guide oil grooves extend and penetrate through the whole thickness of the corresponding vertical surfaces; and an included angle is formed between the extending direction of the guide oil groove and the central axis of the isolation block, so that a pumping effect is generated when the roller rotates, and lubricating grease is promoted to flow in the guide oil groove. The internal grease storage space of the bearing is optimized, and the internal lubrication state is greatly improved.

The invention relates to the technical field of aero-engine rotor vibration tests, in particular to an aero-engine rotor unsteady-state thermally induced vibration test system which comprises a rotor experiment table, an air inlet and exhaust system, a lubricating oil system, a protection system and a heating system. The rotor experiment table comprises a first supporting system, a second supporting system, a rotor outer protection casing, a gas compressor disc, a gas compressor sealing disc, a turbine disc, a turbine front sealing disc, a front shaft diameter, an inter-disc drum, a rear shaft diameter, a first squirrel-cage elastic support, a ball bearing, a second squirrel-cage elastic support and a rolling rod bearing. The first supporting system is composed of a first squirrel-cage type elastic support and a ball bearing, meanwhile, an air inlet is formed in the first supporting system, and the ball bearing in the first supporting system is connected with the front shaft diameter in an interference fit mode. Rotor unsteady-state characteristics considering heating conditions are finally created, and vibration response and durability of a wheel disc structure under the unsteady-state thermal load condition are studied in combination with test conditions such as temperature vibration and the like.

In a left-right wheel drive device (10) that accommodates, in a casing (4), two electric motors (1, 2) spaced apart from each other and a planetary gear mechanism (3) arranged so as to be offset on a first side in an axial direction, a pair of motor shafts (11), a pair of counter shafts (12), and two output shafts (13, 14) are arranged in parallel. The first output shaft (13) is arranged on the first side from the planetary gear mechanism (3) and is fixed with a carrier (3C) at an end portion of a second side thereof. The second output shaft (14) is longer than the first output shaft (13) and is fixed with the second sun gear (3S2) at an end portion on the first side thereof. The second output shaft (14) is rotatably supported by roller bearings (35, 36) at the end portion on the second side and a position on the second side from a driven gear meshing with the second counter gear.

The invention discloses a roll bearing seat flexible connecting device, a quick-response high-precision pre-stress rolling mill and a control method. Comprising a frame type rack, and a roller bearing seat is arranged in the rack; a double-piston-rod hydraulic cylinder is arranged on an upper beam and / or a lower beam of the frame type rack; a connecting rod penetrates through a piston rod of the hydraulic cylinder; a concave-convex combined spherical pad sleeves one end, close to the bearing seat, of the connecting rod; the concave spherical pad is positioned on one side far away from the bearing seat, and the convex spherical pad is positioned on one side close to the bearing seat; the lower end of the connecting rod penetrates through the concave-convex combined spherical pad and the base to be connected to the roller bearing seat. The convex spherical pad can twist along with the bearing seat; the end, far away from the bearing seat, of the connecting rod extends upwards out of the rack and is in threaded connection with a nut, and the connecting rod between the nut and the rack is sleeved with a spring. According to the device, the combined spherical pad is arranged between the hydraulic cylinder and the bearing seat, so that the hydraulic cylinder and the bearing seat are flexibly connected, and the effect of protecting the hydraulic cylinder is achieved.

A gear motor includes an electric motor and a gearbox. The electric motor has a stator housing, a rotor shaft, and a first bearing for mounting the rotor shaft. A coupling sleeve is fitted onto the rotor shaft and is connected to the rotor shaft for conjoint rotation. An inner ring of a second bearing, e.g., a roller bearing, a ball bearing, etc., is fitted onto the coupling sleeve, and the outer ring of the second bearing is accommodated in an adapter ring which is connected to a housing part of the gearbox for conjoint rotation. The adapter ring is connected, on the side thereof facing away from the housing part, to an annular circular flange which is connected, on the side thereof facing away from the adapter ring, to a circular flange connected to the stator housing.

The utility model relates to a cylindrical roller bearing with a disc-type retainer, which belongs to the technical field of bearing assembly and manufacture and comprises an inner ring, an outer ring, rollers and the disc-type retainer, the inner ring and the outer ring are coaxially arranged, and the disc-type retainer and the plurality of rollers are arranged between the inner ring and the outer ring; the outer ring is formed by combining two annular split half outer rings, a retainer limiting groove used for positioning the disc type retainer is formed in the middle of the inner diameter face of the outer ring, the retainer limiting groove is formed between the two split half outer rings, and the outer edge of the disc type retainer is assembled in the retainer limiting groove. Flanges are arranged on the two sides of the inner diameter face of the outer ring, and the rollers are axially limited through the flanges. The limitation on the retainer is reduced through the split bearing outer ring, and the split outer ring is combined with the disc type retainer, so that the assembly space of the retainer is effectively controlled, the bearing has the advantages of high bearing capacity, long service life and high reliability, the performance of the gear box is improved, and meanwhile, the loss caused by fault shutdown is avoided.

The invention discloses a double-stator permanent magnet motor structure, and relates to the technical field of motors. One end of the inner stator shaft is fixed on the motor rear end cover, the other end of the inner stator shaft is suspended, and the motor rear end cover is connected with the casing; the inner stator bracket is fixed on the inner stator shaft; the inner rotor iron core and the outer rotor iron core are respectively fixed on the inner ring and the outer ring of the magnetism isolating ring, and the two ends of the magnetism isolating ring are supported and fixed through the rotor front end cover and the rotor rear end cover; the double-row cylindrical roller bearing is radially arranged between the rotor rear end cover and the inner stator shaft; the cylindrical roller bearing is radially arranged between the rotor front end cover and the motor front end cover, and the motor front end cover is connected with the shell; the deep groove ball bearing is axially arranged between the rotor front end cover and the inner stator shaft; the outer stator iron core is pressed into the heated and expanded casing; and the inner stator iron core is thermally sleeved on the inner stator bracket. Through configuration and arrangement of the three bearings, oil injection and discharge positions are all located outside the motor, the working temperature of the bearings is effectively reduced, and the service life is prolonged.

The invention relates to the technical field of equipment state monitoring, in particular to an equipment state monitoring and maintenance system, and provides the following scheme: acquiring three-dimensional stress energy density distribution data of a roller bearing seat, predicting a roller surface microcrack expansion trend, and generating a dynamic residual life index; rolling force compensation is carried out by combining the ellipticity data of the section of the pipe; meanwhile, by synchronously collecting Barkhausen noise signals and cooling medium flow data, the cooling intensity is adjusted in real time; in order to ensure the roller health, a roller health weight is generated based on the dynamic residual life index, a rolling force compensation model is constructed, rolling force distribution is optimized through a particle swarm optimization algorithm, and the uniformity of the wall thickness of the pipe is ensured; the method effectively prevents roller damage and pipe wall thickness mutation, improves the production efficiency and the product quality, and prolongs the service life of equipment.

The invention discloses a quick-response high-precision pre-stressed rolling mill and a roller flexible axial movement preventing mechanism. The device at least comprises a rack, and a roller bearing seat is arranged in the rack; a rectangular guide groove is formed in the position, corresponding to the center of the bearing seat, of the rack. Positioning pins are mounted on two side surfaces of the bearing seat; the free end of the positioning pin extends into the rectangular guide groove; a sliding sleeve is sleeved outside the positioning pin in the rectangular guide groove; a pressing plate corresponding to the sliding sleeve is arranged at the end part of the free end of the positioning pin; the pressing plate is mounted at the end part of the free end of the positioning pin through a screw; two sliding blocks corresponding to the sliding sleeves are arranged in the rectangular guide groove in the direction of the roller shaft, the two sliding blocks are oppositely arranged, the outer shape of each sliding block is rectangular, a round hole is formed in the middle of each sliding block, the center of each round hole is located outside the corresponding sliding block, and the arc section is smaller than a semicircle; the sliding block is shorter than the sliding sleeve. The roller drives the bearing seat to rotate around the center of the bearing seat under the radial rolling force, and the working condition of equipment is improved through flexible connection.

The invention discloses a wind power tapered roller bearing retainer slip rate calculation model which is simple in structure and can be suitable for various working conditions and structure parameter combinations. A user only needs to input parameters such as the rotating speed of the inner ring, the radial force, the axial force, the inclination angle of the pressing slope surface, the pressing slope depth, the curvature of the pressing slope surface and the pocket gap, and the corresponding slip rate of the retainer can be quickly calculated. The model is verified through multi-body dynamics simulation software, and the result has high accuracy.

A switchable rocker arm can comprise a main body configured to rotate around a rocker shaft. The main body can comprise a valve end and a cam end. A second body can comprise a cam-receiving transfer portion and a latch bore through the transfer portion. The cam-receiving transfer portion can include a bearing axle and a roller bearing. A latch assembly including a first latch and a second latch can be mounted in the latch bore.

The utility model discloses a cylindrical roller bearing assembly which comprises two adjacent outer rings and inner rings arranged on the inner sides of the outer rings, a plurality of U-shaped structure embedding grooves are uniformly formed in the outer rings, a connecting assembly is arranged in each two adjacent embedding grooves, and the connecting assemblies are used for fixedly connecting the outer rings; each connecting assembly comprises a connecting plate inserted into the corresponding embedding groove, two positioning plates symmetrically and fixedly connected to the side, close to the outer ring, of the connecting plate and two screws inserted into the corresponding positioning plates in a penetrating mode, the positioning plates are in threaded connection with the interiors of the corresponding outer rings through the screws, and threaded grooves connected with the screws in a matched mode are formed in the outer rings. By means of the structure, the cylindrical roller bearings are firmly connected through a simple connecting structure, the requirements for different lengths and bearing capacity can be met more easily, only damaged or abraded single-row bearings need to be replaced during maintenance or replacement, the whole multi-row bearings do not need to be replaced, the maintenance cost is reduced, and practicability is high.

The utility model provides an I-shaped thrust cylindrical roller bearing isolation block. The I-shaped thrust cylindrical roller bearing isolation block comprises a support column, a first cross beam and a second cross beam, arc-shaped grooves matched with the cylindrical rollers are formed in the large side faces of the supporting columns; one end of the strut is vertically connected with the first cross beam, two ends of the first cross beam protrude out of the strut and are planes, and the surface, connected with the strut, of the first cross beam is a plane; the other end of the strut is vertically connected with a second cross beam, two ends of the second cross beam protrude out of the strut and are planes, and the surface, connected with the strut, of the second cross beam is a plane; the supporting columns, the first cross beam and the second cross beam form an I-shaped structure; the material utilization rate can be improved, the machining difficulty is reduced, the machining efficiency is improved, the batch production cost is reduced, rolling body abrasion can be reduced, the bearing failure risk is reduced, and the service life of the bearing is prolonged.

The invention relates to the technical field of bearing structures, and discloses a lightweight thin-wall crossed roller bearing for a high-precision industrial robot, the lightweight thin-wall crossed roller bearing comprises a mounting seat, an outer ring, an inner ring and a crossed roller set, the outer ring is fixed in the mounting seat, the inner wall of the outer ring is provided with a first V-shaped channel, the outer wall of the inner ring is provided with a second V-shaped channel, and the crossed roller set is fixed in the mounting seat; the first V-shaped channel and the second V-shaped channel are combined to form a roller path for accommodating the crossed roller group, and a sealing ring is arranged at an annular gap between the two end surfaces of the outer ring and the inner ring; the lubricating assembly comprises a valve cavity formed in the outer ring, a lubricating flow channel communicating with the valve cavity and a distributor located at an outlet of the lubricating flow channel, and a valve element is arranged in the valve cavity. By arranging the lubricating assembly, lubricating oil can be supplied to the crossed roller set in a self-adaptive mode according to the working temperature of the bearing, the surface of the crossed roller set is evenly covered with the seepage holes in the distributor in an infiltration mode, and an oil film is formed to achieve lubrication and heat dissipation.

The application discloses a kind of centrifugal pump shafting critical speed calculation method, including the finite element calculation of radial roller bearing and thrust roller bearing stiffness coefficient curve, the prestressed modal analysis and critical speed calculation of centrifugal pump shafting considering different bearing stiffness coefficient.The setting of constraint condition of this method is in line with actual situation, which can realize the accurate calculation of centrifugal pump shafting critical speed, and help to improve the reliability of safety check of centrifugal pump shafting in design stage, at the same time, the calculation steps are simple, and the engineering application range is wide.

The present invention belongs to the technical field of bearing assembly manufacturing, and particularly relates to a cage for a hollow strut roller bearing and an auxiliary processing tooling therefor. The cage includes a first washer and a second washer. A plurality of struts are connected between the first washer and the second washer, and a roller is sleeved on each strut. A plurality of threaded through holes corresponding to the struts are formed in the first washer, and the plurality of struts are threadedly connected to the first washer through the threaded through holes. At least one movable through hole and a plurality of welding through holes corresponding to the struts are formed in the second washer. A rotation stopping groove is formed in the movable through hole, and the movable through hole is inserted and connected with the corresponding strut. The rotation of the strut is restricted by a spring wire in the rotation stopping groove, and the remaining struts are welded to the second washer through the welding through holes. The present invention can disassemble the struts and rollers in the movable through holes for observing and repairing the raceway, which is convenient for the later maintenance of the bearing, avoids damage during disassembly, can improve the service life of the bearing, and reduce the maintenance cost.

The invention relates to the field of bearings, in particular to a tapered roller bearing machining device and a machining process thereof. The machining device comprises a supporting ring, the cross section of the supporting ring is in an L shape, a plurality of protruding strips are annularly arranged on the supporting ring, when the bearing is machined, the supporting ring is placed in a horizontal state, an inner ring is placed on the protruding strips, the inner ring is sleeved with an isolation frame, and then the supporting ring supports the isolation frame; at the moment, a plurality of tapered rollers are placed in a plurality of through holes in the isolation frame, the tapered rollers are inserted into the tapered roller path, the outer edge of the supporting ring supports the tapered rollers, and then the outer ring is buckled on the outer sides of the tapered rollers, so that the tapered roller bearing is convenient to assemble and machine. Assembling and machining of a plurality of tapered rollers in the tapered roller bearing are facilitated, and the tapered rollers are prevented from falling off during assembling.

The utility model discloses a polishing device for producing a self-aligning roller bearing, and relates to the technical field of bearing production. The grinding device comprises a bottom plate and a bearing, wherein a grinding mechanism and a fixing mechanism are arranged on the bottom plate. According to the bearing polishing device, the fixing mechanism is arranged, the two supporting plates are matched with each other, the two rotating connecting plates can be supported, the trapezoidal groove is matched with the moving plate, and therefore the moving plate can only vertically move on the inner wall of the trapezoidal groove; a second motor can be driven to drive a second rotating shaft and a disc to rotate, under cooperation of an eccentric shaft, a hinge plate and a connecting shaft, a bearing on a moving plate reciprocates up and down between a first grinding roller and a second grinding roller, and the up-and-down reciprocating motion can ensure that the surface of the bearing is in uniform contact with the two grinding rollers, so that finer grinding is achieved; and therefore, the polishing effect and polishing efficiency of the bearing are further improved.

The invention relates to a hybrid speed reduction transmission equatorial telescope based on a crossed roller bearing. The equatorial telescope comprises a shell, a right ascension axis hybrid speed reduction transmission assembly, a declination axis speed reduction transmission assembly, the crossed roller bearing, a laser beam parallelism adjusting mechanism and a base. The right ascension shaft mixed speed reduction transmission assembly comprises a right ascension shaft motor, a right ascension first-stage speed reducer and a right ascension second-stage speed reducer, the right ascension first-stage speed reducer is a harmonic speed reducer, and the right ascension second-stage speed reducer is a worm and gear transmission pair; the declination axis speed reduction transmission assembly comprises a declination axis motor and a declination axis speed reducer; an outer ring of the crossed roller bearing is fixed on the rear shell, one end face of an inner ring is fixed with the output end of the right ascension shaft mixed speed reduction transmission assembly, and the other end face of the inner ring is fixed with the right ascension shaft output seat; and the declination shaft speed reduction transmission assembly is fixed on the right ascension shaft output seat. The equatorial telescope has the advantages of being high in degree of freedom, small in size, light in weight and high in bearing capacity, and the equatorial telescope is high in reduction ratio, stable in tracking, high in tracking precision and low in power consumption.

The utility model discloses a transmission structure for glass tempering equipment. The transmission structure comprises a rack, a transmission shaft, a roller way, a frame plate, a driven magnetic wheel and a driving magnetic wheel, the transmission shaft is rotatably installed on the rack through a supporting component with a height adjusting structure. The roller way is composed of a plurality of horizontally-arranged conveying rollers, the two ends of each conveying roller are rotatably installed on a frame plate provided with a bearing groove through roller way bearings, and the frame plate is connected with the rack through a frame plate support with a height adjusting assembly. A driven magnetic wheel is arranged at one end of the conveying roller, and a driving magnetic wheel matched with the driven magnetic wheel and driving the driven magnetic wheel to rotate is arranged on the transmission shaft. By means of the design of the multi-layer adjustable transmission supporting system, multi-layer accurate adjustment from the roller way to the transmission shaft is achieved, high-precision glass conveying and the best power transmission performance are obtained, and the transmission system can adapt to various working condition requirements. Through accurate adjustment, the stability and accuracy of glass conveying are remarkably improved, meanwhile, the installation and maintenance process of equipment is simplified, the production efficiency is improved, and the maintenance cost is reduced.

The invention relates to the technical field of harmonic reducer auxiliary debugging, in particular to a harmonic reducer self-adaptive accurate aligning mechanism and a debugging method.The harmonic reducer self-adaptive accurate aligning mechanism comprises a debugging table, a flange plate is fixedly arranged on the debugging table, a debugging motor is fixedly arranged at the bottom of the flange plate, and a harmonic reducer to be debugged is arranged above the flange plate; the harmonic reducer comprises a wave generator, a flexible gear and a rigid gear, the flexible gear is sleeved with a roller bearing, four adjusting bolts are arranged between the rigid gear and an inner ring of the roller bearing, and a detection piece is arranged beside the rigid gear. Manual adjustment is not needed, the whole debugging process does not need to depend on personnel experience, the automation degree is higher, the debugging efficiency is greatly improved, and the precision stability during debugging of different batches and different operators is ensured.

A wing for an aircraft, comprising a main wing and a high lift assembly which includes a body, and an assembly connecting the body to the main wing, so the body is movable between a retracted position and an extended position. The assembly comprises a track extending along a longitudinal axis between first and second ends, with an intermediate portion therebetween. A roller bearing ensures that the track moves along the longitudinal axis. The roller bearing comprises bearing units, each mounted to the main wing and having a bearing surface for engaging the elongate track. The units include a first and second end units and an intermediate unit wherein, relative to the longitudinal axis, the intermediate unit is positioned between the first end unit and the second end unit. The elongate track comprises a recessed portion which, in the retracted position, aligns the intermediate unit.

The invention discloses a forging and heat treatment process for a single-row tapered roller bearing ring. Raw materials are sequentially subjected to cutting, forging, annealing, turning and heat treatment, and then the single-row tapered roller bearing ring is obtained. The hot-rolled polished bar is used as the raw material, so that the surface smoothness of the bar is ensured, no crack occurs during forging, and the yield of the material is improved; a secondary heating process is adopted after forging, it is guaranteed that the forge piece is in a reasonable temperature interval during rolling expansion, the phenomenon of rolling expansion cracks does not occur, and the product quality of the forge piece is guaranteed; the ash cooling process is adopted to replace slow cooling along with a furnace in an electric furnace, the process method is simple, practical and low in cost, and electric energy is saved on the premise that the quality of the forge piece is guaranteed; three-time preheating is adopted. The vacuum heating and heat conduction mode is radiation heating, and a repeated preheating mode is adopted, so that the ferrule in the furnace can be uniformly heated, the heating temperature is slowly increased, thermal stress in the ferrule can be reduced, and the quality of the quenched ferrule is ensured.

The utility model discloses a robot stacking and carrying device which comprises a fixing disc installation head, a stepping motor is fixedly installed on one side of the interior of the fixing disc installation head, and an output shaft of the stepping motor is connected with a transmission rotating shaft through a coupler. The front end face of the transmission rotating shaft is connected with a circular roller bearing block installed on the inner wall of the fixing disc installation head through a roller bearing, an internal thread groove is formed in front of the circular roller bearing block, and a fixing disc is arranged in front of the internal thread groove. And a fixing disc thread fixing rod located in the internal thread groove is fixedly arranged in the middle of the rear end face of the fixing disc, and an external thread column also located in the internal thread groove is arranged behind the fixing disc thread fixing rod. According to the utility model, different types of fixing discs can be automatically disassembled and assembled, when different types of fixing discs need to be installed according to different carried objects, manual replacement is not needed any more, and the convenience of equipment is improved through the technical scheme.