2525results about How to "Guaranteed coaxiality" patented technology

The invention provides a vehicle supporting bridge pipe and end face flange welding machine and a welding method thereof. The welding machine comprises a welding seat, a supporting flange plate is fixed at the upper end of the welding seat, a second three-claw chuck is fixed on the supporting flat plate, a circumferential rotating device coaxial with the second three-claw chuck is arranged on thesupporting flat plate, two welding guns are fixed on two sides of the center of the circumferential rotating device, a vertical beam is fixed on the supporting flat plate, a lifting mechanism is fixedon the vertical beam and fixed to a first three-claw chuck through elastic connection, a second three-claw chuck and the first three-claw chuck are fixed to a flange and a supporting bridge pipe respectively, and the welding guns weld the flange and the bridge pipe when rotating. The welding guns with two circumferential sides in symmetry are adopted to weld a welding position at the same time, welding deformation of the supporting pipe and the flange caused by welding stress is reduced, and coaxiality between the supporting pipe and the flange is improved.

The invention relates to the technical field of control valves, in particular to an electric valve for regulating fluid flow. The electric valve comprises a valve seat component, a nut component and a valve needle lead screw component, wherein the valve seat component comprises a valve seat and a valve core seat; the nut component comprises a nut for mounting the valve needle lead screw component; and the lower end of the nut is sleeved with the upper end of the valve core seat. By the electric valve, the lower end of the nut which is used for mounting the valve needle lead screw component is connected with the upper end of the valve core seat in a sleeved mode, so that the coaxiality of the nut and a valve port of the valve core seat is extremely easy to guarantee, the coaxiality of a valve needle and the valve core seat is higher, and the problem that the valve port is loosely sealed or is subjected to eccentric wear can be solved. Meanwhile, because the coaxiality of the valve needle and the valve port is improved, the friction force can be obviously reduced when a rotor of a rotor component rotates, and the action reliability of the electric valve can be improved.

The invention discloses a proportional electromagnetic valve for an electrically controlled high-pressure common-rail fuel injection system of a diesel engine and relates to an electromagnetic valve. A position at which a fixed iron core (8) and a movable iron core (3) of the electromagnetic valve attract each other is a conical polar plane. The fixed iron core (8), the movable iron core (3), a guide pipe (18), a spiral spring (15), an electromagnetic coil (4), a square iron core (19), a shell (14) and a valve body (1) jointly form the electromagnetic valve in an assembling way. When driving current is input into the electromagnetic coil, a magnetic field is generated through a magnetic path in the valve, electromagnetic force with magnitude which is in proportion with the magnitude of the driving current and is not related to a stroke is generated relative to the movable iron core, the movable iron core is enabled to overcome spring force to move, the movable iron core stops moving at a balance point of the two kinds of force and therefore is kept at a stable position, and the movable iron core can proportionally and continuously move according to the magnitude of the driving current to control the opening of the valve. Under complex working conditions under which the diesel engine works, the electromagnetic valve not only can stably control the on/off of a fuel path, but also can accurately and proportionally control the flow of the fuel path according to the driving current.

The invention discloses a gantry type five axes numerical control machine tool, belonging to the machining field of a numerical control mechanism. The technical scheme is as follows: the traditional vertical rod is replaced by an X-direction guide way, so that support force to a beam is great, and the beam can be ensured to be stably move along the X-direction guide way; an automatic bidirectional revolute joint which is fixedly connected with a Z axes servo drive assembly can drive an electrical main shaft to rotate around a horizontal A axes and along the C axes of an electrical main shaft; and the Z axes servo drive assembly also can move along the beam to realize the move of a Y axes. Therefore, under the condition that a work table prevents from rotating and moving, namely, under the condition that the work table is static relative to the ground, the numerical control machine tool skillfully realizes the five axes numerical control machining, conquers the defect of large floor space caused by the move and the rotation of the work table, and can realize the numerical control machining of a large component with high precision.

The invention provides a fire extinguishing bomb launching system for an unmanned aerial vehicle. The fire extinguishing bomb launching system comprises a ground station as well as the unmanned aerial vehicle, a hanging rack and fire extinguishing bombs which are sequentially connected from top to bottom, wherein the hanging rack comprises a launch platform, batteries which are in line connection with the unmanned aerial vehicle are arranged above the launch platform, a guide rail assembly is arranged below the launch platform, the fire extinguishing bombs are hung below the guide rail assembly, the ground station comprises a ground portable computer and a ground radio station, and the ground portable computer is connected with the ground radio station through a data connecting line. According to the fire extinguishing bomb launching system for the unmanned aerial vehicle, provided by the invention, fire-fighting fire extinguishing and relief operations for high-rise buildings are implemented by adopting the unmanned aerial vehicle to carry the fire extinguishing bombs, so that ground obstacles can be effectively evaded; the unmanned aerial vehicle flexibly shuttles among the buildings, maintains unimpeded communication contact with the ground, transmits information on a fire scene to a ground command center by means of images and data, receives ground commands and implements window breaking, aiming and fire extinguishing bomb launching so as to implement fire extinguishing.

The invention provides a whole forging near net forming process for an inner ball cage sliding sleeve, comprising the following steps of: blanking, machining to prepare a blank, shot blasting, surface coating, rod part forward extruding, barrel part upsetting, barrel part reverse extruding, spheroidizing and annealing, phosphorus saponifying and barrel part finishing and forming. The inner ball cage sliding sleeve manufactured by adopting the process provided by the invention has the advantages of uniform structure, high density, strength and hardness, small size error, no follow-up machining, high processing efficiency, short production period, material conservation and high practical value.

The invention provides an apparatus for testing the fatigue life of a high-speed angular contact ball bearing. The apparatus tests the fatigue life of the angular contact ball bearing under the working condition of various rotary speeds and loads by adoption of a frequency converter to realize infinite variable speed of a high-frequency motor, adoption of a transmission shaft to drive the angular contact ball bearing to rotate at a high speed under certain pretightening force, and adoption of a weight to adjust and load the axial pretightening force. The apparatus overcomes the defects of complex structure, expensive price, trivial operation, large noise and so on of the prior apparatus for testing the fatigue life of the angular contact ball bearing, realizes zero transmission and lever loading, and has the advantages of superior high-speed performance, reliable test results, simple structure and low cost.

The invention discloses a clamp for turning a universal joint. The clamp comprises a first locating mechanism used for locating a universal joint work-piece (1) in the vertical shaft direction of the universal joint work-piece (1), and a second locating mechanism used for locating the universal joint work-piece (1) in the horizontal shaft direction of the universal joint work-piece (1). The first locating mechanism and the second locating mechanism can locate the universal joint work-piece in the vertical shaft direction and the horizontal shaft direction at the same time, and therefore the universal joint work-piece can be clamped in a centring mode, firm locating in the turning process is guaranteed, and the coaxiality of two cylindrical shafts on the two sides of a machined cylindrical shaft is guaranteed. The clamp can clamp and locate the universal joint work-piece accurately.

The invention discloses a shaft force and torque combined testing machine for a fastening piece. The shaft force and torque combined testing machine for the fastening piece comprises a host machine and a micro computer measurement and control system and is characterized in that the host machine comprises a machine cabinet which is sequentially provided with a motor, a reduction box, a torque sensor, a bearing pedestal, a counter force frame and a load senor from right to left. The load sensor is connected through the counter force frame and is arranged at one end of equipment, and the machine has an external load sensor structure, and effectively protects the sensor from being compacted by the fastening piece or a clamp, so that the acquired data is more stable and reliable. As the counter force frame is adopted, the length of a bolt extending out of a nut end is not needed to be adjusted by increasing or reducing washers so as to fulfill the aims of saving time, labor and trouble.

The invention discloses a full-automatic drink making robot. A stirring device is mounted at the tail end of one arm of a dual-arm robot, and a mechanical hand is arranged on the other arm of the dual-arm robot. An automatic cup discharging device separates a pile of paper cups, the paper cups are conveyed to preset grabbing positions, and the mechanical hand grabs the paper cups from the grabbingpositions. A self-service ordering system provides an ordering interface, customers select drink formulas from the ordering interface, a centralized control system acquires the drink formulas and carries out analysis, the tail ends of the corresponding mechanical arms of the dual-arm robot are controlled to be arranged on corresponding discharging points of a quantitative discharging cabinet sequentially according to the receiving sequence and the ingredient positions, and the quantitative discharging cabinet is controlled to carry out discharging according to the ingredient quantity. The stirring device stirs ingredients. The mechanical hand of the dual-arm robot is controlled to grab the paper cups from the preset positions, and the ingredients which do not need to be stirred are received. After the stirring device carries out stirring for preset stop time, drink is poured into the paper cups, the mechanical hand puts the paper cups at the preset positions on an automatic delivery device, and the automatic delivery device rotates to-be-delivered cup positions to the positions where the customers take the cups.

The invention discloses a creel device of a yarn dyeing machine with an ultra-low bath ratio, which comprises a sand table, a suspender and a yarn rod, wherein the upper surface of the sand table is in a disk shape; the lower end of the sand table is in a cavity structure; the yarn rod is in a hollow barrel structure; a water drum is arranged in the barrel of the yarn rod and is in a hollow or solid columnar structure; the center line of the yarn rod and the center line of the water drum are same; the ratio of the hollow internal diameter of the yarn rod and the external diameter of the waterdrum is 10:7-9; and the barrel of the yarn rod is evenly provided with a plurality of water outlets along the circumference of horizontal cross sections of different heights. The hollow barrel of theyarn rod disclosed by the invention is provided with the water drum, which is favorable for reducing the volume of dye liquor in the yarn rod and for reducing a water bath ratio; under the same main pump power, the water drum is favorable for improving the practical lift of a pipeline relatively, the flow rate of the dye liquor in the yarn rod is improved, the levelling property of cheeses of upper layers and lower layers can be better guaranteed, and the one-time success rate for dyeing is improved; and from the bottom to the top, the water outlets on the barrel of the yarn rod at the outer side of the water drum are thicker at the higher place of the yarn rod, which is favorable for realizing the purpose of even dye transfer.

The invention discloses a bonnet support processing method and clamp and processing equipment for a bonnet support. The bonnet support processing method includes fixing a bonnet support through the special clamp to enable the central line of the bonnet support to be coaxial with the processing equipment; cutting a flange plane and an end face of a valve rod nut through the processing equipment; changing a cutter, rough-boring or fine-boring a valve rod nut hole, assembling a seal seat and a gland box; changing a cutter to enable the cutter to be coaxial with the processing equipment, rotating a rotation disc at 180 degrees, and finish-milling a thread of the valve rod nut; changing a cutter to enable the cutter to be coaxial with the processing equipment, rotating the rotation disc at 180 degrees, and drilling a flange hole; rotating the rotation disc at 90 degrees, and drilling an eyelet bolt hole and a lubrication hole of the valve rod nut on the support; changing a cutter, rotating the rotation disc at 90 degrees, scraping reversely and facing the back end face of the flange hole; and after finishing processing the back end face of the flange hole, disassembling the bonnet support. By the bonnet support processing method, processing on components can be finished through being clamped only once, and product processing accuracy and quality are improved.

The invention, which relates to the technology of an electron gun of a klystron, discloses a method for frame mounting of a non-intercepting gridded electron gun of a klystron. The method comprises the following steps: (a), respectively welding a heater-cathode assembly, a heater-cathode support assembly, a gridded lead assembly, an insulating segment assembly, a buncher assembly, and an anode assembly of an electron gun into a independent part; and (b), positioning, welding, and assembling the six parts in sequence by correlative dies. According to the method provided in the invention, the coaxiality of the frame mounting of the whole electron gun parts is ensured. Compared with a cathode control klystron that is used currently, the non-intercepting gridded klystron, which is constructedby the non-intercepting gridded electron gun assembly by the method provided in the invention, has advantages that an agility of a pulse width and a repetition period is allowed and a flexibility of a wave beam is obtained. Moreover, according to the invention, the radar becomes light and small; current provided by a modulator is reduced and the load of a switching tube is also reduced.

The jacketed pipe prefabrication platform and prefabrication method of the present invention relate to the technical fields of petrochemical and chemical fiber equipment installation. Aiming at the problem that the prefabrication construction operation of the straight pipe section of the existing large-diameter jacketed pipe is relatively complicated and the work efficiency is low. It consists of a flange plate positioning frame, an inner tube positioning component and a number of outer tube positioning components; the adjustment rod set at the bottom of the positioning base can adjust the height of the flange plate; the inner tube positioning component is vertically fixed on the back plate The central rod, the telescopic guide wheel support frame sleeved on the central rod, and the support frame connected to the other end of the central rod, the telescopic guide wheel support frame is composed of a fixed sleeve sleeved on the central rod, along the central rod It is composed of a support rod with uniform radial axis and hinged with the fixed sleeve, and a telescopic bracket with one end hinged with the support rod and the other end connected with the central rod. The other end of the support rod is provided with a guide wheel; the outer tube positioning component includes a detachable Connect the outer tube bracket and the adjustment rod II.

The invention provides an electric spark and electrochemical composite machining method of a micro-electrode, relates to an electric spark and electrochemical composite machining method, and belongs to the field of special machining. The electric spark and electrochemical composite machining method of the micro-electrode is provided in order to solve the problems that: the traditional electric spark grinding method of a block electrode has machining taper error, poor quality of an electrode surface, and a micro-electrolytic grinding method of an edge electrode has low machining efficiency. The method comprises the following: step 1. a machine tool is initialized, and tools and electrodes are clamped; step 2. a block electrode of an electrode (13) is subjected to electric spark grinding machining; step 3. the electrode (13) is subjected to electrolytic grinding finish machining; and step 4. the electrode (13) after being subjected to the electrolytic grinding finish machining is tested. The electric spark and electrochemical composite machining method is particularly applicable to the machining of micro cylindrical electrodes.

The invention discloses an ultralow liquor ratio zipper dyeing machine and dyeing process thereof. The dyeing machine comprises a tube cylinder, a cylinder cover and a zipper warp beam plate frame embedded into the tube cylinder. The zipper warp beam plate frame comprises a zipper plate seat, a hollow water drum, a zipper woven belt, a zipper tube sleeve, a locking bolt, and a zipper frame lifting ring. The lower end of the hollow water drum is fastened on the zipper plate seat, the zipper tube sleeve is sleeved on the outer side of the hollow water drum, and a diversion inlet and a diversion outlet are arranged below the zipper plate seat and connected with an infusion pump through a horn-shaped pipe sleeve. The dyeing process comprises the stages of scouring and bleaching, dyeing and water scrubbing. According to the ultralow liquor ratio zipper dyeing machine and the dyeing process thereof, a lift range required by zipper woven belt dyeing water level can be achieved when the height of dye liquor in the dyeing machine is lower than the zipper plate seat, the effect of ultralow liquor ratio zipper dyeing is achieved, the dyeing machine has a lower dying liquor ratio than a traditional zipper dying machine, and the purposes of saving electric energy, steam and the dye liquor, shortening dyeing and finishing periods, and saving energy and reducing emission are achieved.

The invention discloses an electronic expansion valve, belongs to the technical field of refrigeration system control, and solves the technical problem of wear caused by the coaxiality difference between the existing electronic expansion valve nut and a valve needle assembly. The electronic expansion valve comprises a valve body, a nut, a valve needle assembly and a guide sleeve, wherein the nut and the guide sleeve are assembled on the valve body, and the valve needle is arranged on the nut; the nut and the guide sleeve are integrally molded by injection.

The invention discloses an anode of a supersonic plasma torch, and the supersonic plasma torch. Mainly, the conventional laval-type anode is divided into two parts, wherein one part near a cathode body is called as a basic anode; the other part far away from the cathode body is called an auxiliary anode; and the two parts are isolated by a high-temperature-resistant insulation ceramic chip. The cathode body is fixed on a conductive torch core and is sequentially connected with the basic anode and the auxiliary anode in an axial direction. When the anode works, an arc root is transferred from the basic anode to the auxiliary anode, so that a nozzle of the laval-type basic anode with a complicated structure is protected while an electric arc is lengthened. Therefore, the voltage is increased under the condition that the working current is unchanged. As a result, the energy utilization rate is improved.

The invention provides an adjustable middle support device for machining an overlength shaft. The adjustable middle support device comprises a transition sleeve and a support frame, wherein the transition sleeve is radially provided with a transition sleeve adjusting device capable of adjusting a distance between the transition sleeve and a boring rod, the support frame is a hollow circular sleeve and is sleeved on the transition sleeve, two end parts of the support frame are in airtight connection with the transition sleeve, the support frame is radially and symmetrically provided with a support frame adjusting device I capable of adjusting the distance between the support frame and the transition sleeve and a support frame adjusting device II capable of adjusting the supporting frame and a hole wall inside a stern shaft tube, a cavity of the support frame is internally provided with a rubber hose, one end of the rubber hose is in contact with the excircle of the transition sleeve, the other end of the rubber hose is connected with an outlet end of an oil filling nozzle which is fixedly arranged inside the cavity of the support frame, and the top end of the oil filling nozzle extends out of the support frame. The adjustable middle support device disclosed by the invention can be used for not only supporting the long boring rod but also guaranteeing the coaxiality in boring a long shaft hole, and has a higher practical value.