314 results about "Gyration" patented technology

The present invention generally relates to units of engines and more particularly to units containing a unique combined-cycle (combustion-detonation) “counter-rotation, anti-gyration, gyroscopic,” turbine fan-jet / free-piston engine configuration for induced air supercharging and boosting the performance of novel Ramjet engines or Ramjet engine configurations by improving internal air-stream dynamics. These dynamics are the result of co-operative air stream intermixing through convergent, supercharge-attenuated, inducted, compressed, tuned, pre-heated ambient air. Achieved through the varying of the geometric structural form and the utilization of unique engines and air induction and propulsion conformations, aided with supplemental air, fuel, oxygen and optiomal water and electrolyte charging.

The invention provides a coal mine used caterpillar-mounted full-hydraulic underground drill hydraulic system. The prior caterpillar-mounted full-hydraulic underground drill requires a plurality of hydraulic control valves or to add a change valve in the hydraulic system in order to protect the thread of the drilling tool when the drilling tool is lifted or lowered quickly, or wrenched and disassembled, which causes not only complexity of the hydraulic system and low reliability, but also the trouble to operate and control the system and low control accuracy. The invention is designed to solve the problems. The caterpillar-mounted self-propelled underground drill hydraulic system provided by the invention comprises a caterpillar traveling loop, a unit head gyration loop, a feeding pulling loop, a drill stabilization and angular adjustment loop, and has the functions of linear traveling of the drill, turning on site, stopping on a ramp, gyration and feeding of the unit head, linkage of a feeding oil cylinder, a chuck and a clamper. In addition, the invention has the functions of hydraulic feedback control and linkage. Accordingly, the hydraulic system provided by the invention has the advantages of handiness, convenience for control, high control accuracy, quick response, etc.

The invention discloses a robot rotational joint driving device which comprises a driving mechanism and an execution output mechanism. The driving mechanism comprises a servo motor and a hydraulic pump, the execution output mechanism comprises two hydraulic cylinders arranged in parallel, and a swinging rod is connected between pistons of the two hydraulic cylinders and can swing around the gyration center of the swinging rod under driving of the pistons at the two ends; a robot component is connected to the gyration center of the swinging rod and rotates along with swinging of the swinging rod; the driving device further comprises a detection module, a processing module and a motor controller. The execution output mechanism is driven by the servo motor to conduct outputting, the output power is high, and the requirement that a rotational operation robot needs high-power rotational joints of compact structures can be effectively met. Intermittent one-way turnover movement of a transmission shaft is achieved through one-way bearing transmission. A transmitter is used in cooperation with an amplifier, the rotation amount of the robot component is effectively adjusted, and the rotation accuracy and the rotation reliability are guaranteed. The robot rotational joint driving device is simple in structure and convenient to implement.

The invention discloses a circular seam laser welding fixture for a thin-wall cylinder, which comprises a head frame, an extended ring, a rear frame of a machine tool and a top plate. When in operation, the extended ring is placed between the head frame and the rear frame of the machine tool and sleeved in a place where two workpieces to be welded are spliced; one non-splicing end of the workpiece is retained and positioned on a spindle of the head frame while the other non-splicing end is attached to a positioning surface of a baffle; a top point of the rear frame of the machine tool is arranged in a top point hole of the baffle. By adopting a retractable extended ring, the invention realizes the correct splicing and retaining of the thin-wall cylinder; the gyration of the cylinder can be realized by a way that the head frame with the function of turning drives a head part of the cylinder and a tail part of the cylinder is supported by the rear frame and the top plate; meanwhile, the splicing precision also meets the requirement of the laser welding. A worm-and-gear mechanism of the spindle in the head frame can accomplish the precise gyration of the workpiece and the head frame with a turnover function is convenience for feeding and discharging of a longer workpiece. The invention has the advantages of precise positioning, reliable and convenient fixture, convenient application, high efficiency, etc.

The invention relates to a shrimp-shaped six-wheeled moving robot which can fit for complex road conditions automatically, has stronger capacity for crossing obstacle and belongs to the mechanical field. The shrimp-shaped six-wheeled moving robot consists of a head part, an abdomen part, lateral wings and a tail part, and the shape likes a shrimp; the head part is articulated with the front wall of the abdomen part; the left lateral wing and the right lateral wing are respectively articulated with the left side and the right side of the abdomen part; the tail part is articulated with the back wall of the abdomen part; the head part is a four bar mechanism; the end of a connecting rod is equipped with a wheel which is driven by a drive motor and realizes the turning by a turning motor; each lateral wing is a parallelogram mechanism, and each parallelogram mechanism is provided with two legs; two wheels are respectively installed at the ends of the legs and are respectively driven by a drive motor; and the end of the abdomen part is equipped with a wheel which is driven by a drive motor and realizes the turning by a turning motor. The shrimp-shaped six-wheeled moving robot can cross the vertical stage 1.5 and 2 times higher than the diameter of the wheel, has stronger bearing capacity and higher mechanism efficiency and can make the turning movement with the gyration radius which is zero approximately.

The invention provides a large full-gyration offshore platform crane which relates to the lifting machinery and comprises a rotary column, an arm support, a main lifting winch, an auxiliary lifting winch, an arm support variable-breadth winch, a gyration bearing drive mechanism, a main hanger hook, an auxiliary hanger hook and a driver cab. The arm support is connected with the middle part of the rotary column through a hinge point mounted on the root of the arm support; the lower half part of the rotary column is arranged under a main deck and connected with a semi-diving platform through the gyration bearing drive mechanism. The gyration bearing mechanism is composed of an upper radial bearing, a lower radial bearing, a peg-tooth, a three-in-one decelerator, a centripetal thrust bearing and a rubber support; the upper radial bearing and the lower radial bearing are respectively mounted on the middle and the lower parts of the rotary column. The centripetal thrust bearing and the rubber bearing are sequentially mounted on the bottom part of the rotary column; the peg-tooth mounted on the lower deck is meshed with the three-in-one decelerator mounted on the corresponding position of the rotary column. The large full-gyration offshore platform crane has the advantages of novel, compact and practical structure, high efficiency and being a large full-gyration offshore platform crane with economical and practical properties.

The invention discloses a suspension base disc polishing device capable of being actively driven. The suspension base disc polishing device comprises an actively driven grinding transmission device, a suspension base disc, a correction ring and a grinding disc; the actively driven grinding transmission device is fixedly connected with the correction ring, and drives the correction ring to rotate; the correction ring is fixedly arranged on the grinding disc through a fixing piece and can rotate around a fixing center line; the suspension base disc is clamped in the correction ring; the suspension base disc polishing device is characterized in that a plurality of wedged grooves are arranged on the suspension base disc along the circumference direction; the wedged grooves are full of polishing liquid; the correction rings drive the suspension base disc to do gyration movement; the suspension base disc generates liquid dynamic pressure under the gyration movement, so that a work piece floats; and the work piece is in contact with a grinding material of the polishing liquid. The suspension base disc polishing device provided by the invention has the advantages of simple structure and relatively low cost; the surface roughness and the flatness of the work piece can be improved; the internal damage of the work piece, caused by polishing, can be reduced due to flexible contact between the work piece and each polishing particle; and the simple operation conditions are simple and the development prospect is wide.

The invention provides a seismic cycle analysis method, comprising the steps of: processing Hilbert-Huang transform for the reflection factor sequence and the time frequency analysis picture of a seismic sequence model of a seismic sequence model base; processing Hilbert-Huang transform for the seismic data of a target layer, finding a seismic sequence model of the target layer to judge the reflection character of the target layer. The invention utilizes Hilbert-Huang to analyze seismic section to attain accurate and reliable frequency spectrum and after decomposition display the effective information not displayed of the sections in the prior art, to provide data for reservoir predication.

The invention discloses a pneumatic lever type clamp structure. A pressure plate (3) is a lever structure, and the gyration center of the pressure plate is hinged with a clamp body (1) through a lever fulcrum (1); and under the state that a workpiece (7) is tightly clamped, one end of the pressure plate (3) is connected with a piston rod on a cylinder (5), while the other end is contacted with the clamped workpiece (7). With the technical proposal, pressing force of the cylinder can be increased through an arm of the lever structure by the lever principle when the cylinder is adopted, so that the processing workpiece can be pressurized conveniently and more effectively. The invention has a simple structure, can effectively improve the efficiency of processing parts, can realize stable processing tempo, and has the advantages of high rate of finished products and safe and convenient use.

Herein disclosed is a centrifugally cast pole having a substantially uniform wall thickness along the long axis of the pole. During centrifugal casting, molten metal is poured inside a rotating, tapered mold. As chilled liquid is poured over the outside of the rotating mold, the metal forms, or paints, to the contour of the mold interior creating a metal pole. By precisely controlling casting gyrations such as the spin, travel, pitch, and yaw of the rotating mold and the calibration and physical mechanisms of the casting machine, hollow, tapered, tubular metal poles are produced with previously unknown uniformity of wall thickness. The controlling principles, designs, and mechanisms of this centrifugal casting method enable wall uniformity to extremely high tolerances. By extension, the ability to precisely control the metal volume painted inside the mold allows, as a design choice, wall thickness variation in any embodiment if so desired.

Pentalogy compound arbitrated valve block of this invention can work for five operation unit: gyration, dilation, amplitude, Jan winder and main hoist. That can make infinitive speed governing and different load with parade infinitive speed governing come true. Gyroscope provides oil for separate lubropump P1. It can be divided into feeder road for decompression and pressure limiting. It can support the above system the unchanged controlling pressure source. The system of gyroscope oil return can regulate counterbalance valve for supporting gyration stability. Besides, dilation, amplitude, Jan winder and main hoist use P2 and P3 pumps for supporting oil together. This can improve the speed of bracket arm and amplitude. All are designed with load sensitive information loop. Besides, the design of dilation, amplitude, Jan winder, main hoist, common diverter valve PC2 and relief valve R2 has special structure trigeminy damp for improving diverter valve PC2 star-stop. The design also adapts the outing screw-fit installation. This method is convenient for assembling, debugging and repairing. Pentalogy compound arbitrated valve block are used modular structure and stacked consolidation to reach highly unitized and serialized level. It also uses the means which can regulate pressure and flow for customers' convenience and market.

The invention provides a multifunctional control device of a small waterline plane ship hydrofoil and column rudder, comprising two hydrofoils and a column rudder mechanism; each hydrofoil and the column rudder mechanism comprise hydrofoils; a hydrofoil strut fixed on the hydrofoil, two wing flaps symmetrically distributed on the hydrofoil and at the both sides of the hydrofoil strut and a column rudder arranged on the hydrofoil strut; two hydrofoils and the column rudder mechanism are respectively installed at the front part and the rear part of a small waterplane area twin-hull ship; two sheet bodies of the hydrofoil and the small waterplane area twin-hull ship are fixedly connected according to a certain installation angle; the hydrofoil strut is fixedly connected with a connection body at the upper part of the small waterplane area twin-hull ship. The multifunctional control device of the invention has multiple functions, can shorten transient time from hullborne operation to foilborne operation, weaken heave motion and pitching motion of the small waterplane area twin-hull ship, weaken rolling motion of the catamaran, control inclination angle of the ship, has course control function, can effectively shorten steering gyration radius, and improve the safety, navigability and maneuverability of the small waterplane area twin-hull ship.

The invention discloses a cylinder barrel boring device and a method of using the device to process the cylinder barrel, wherein the cylinder barrel boring device comprises a guide rail and a boring head arranged on the guide rail; a boring cutter is arranged on the boring head; the boring head is in axial sliding fit with the guide rail through a power transmission device; and the guide rail is a cylindrical boring bar. According to the method of using the cylinder barrel boring device to process the cylinder barrel, the device is mounted on a lathe and directly positioned by the excircle of the cylinder barrel, thus eliminating the technological process of processing the exterior angles of the two ends of a reversed cylinder barrel in the traditional cylinder barrel boring; the excircle of the cylinder barrel and the gyration center of the boring bar are consistent; the axis of the inner hole of the bored cylinder barrel and the excircle of the cylinder barrel are concentric; even thickness of the wall of the processed cylinder barrel is realized in the aspect of processing technology, thereby ensuring the required strength of the cylinder barrel.

The invention discloses an angular hole drilling device for a cylinder cover of a diesel engine. The device includes a working bench, a control component and a gyration index plate. The working bench includes a pedestal and a gyration support. A central hole, an annular spring support cavity, a knock hole and a location piece hole are formed on the central mounting part of the gyration support. The gyration index plate is provided with a connecting seat part, a bearing used annular seat cavity and an index locating hole. The gyration index plate is provided with a locating angular hole opening upwards; a first corner Alpha is formed between the axis of the locating angular hole and the central axis of the gyration index plate, a second corner Theta is formed between the horizontal plane and the upper end plane of the gyration index plate, and the value of the first corner Alpha is equal to that of the second corner Theta. The angular hole drilling device for the cylinder cover of the diesel engine can drill and form angular holes with higher working accuracy and quality.

Devices and methods for providing a known resistance load and measuring an internal gyration angle of a mold in a gyratory compactor. A device in one form has a cylindrical body with protrusions through which a known resistance force is applied by the gyratory compactor, and probes which extend from the body to measure an internal angle of gyration of a mold within a gyratory compactor. The device is placed into a cylindrical mold which is placed into a gyratory compactor. Mold end plates may or may not be required depending on the gyratory compactor configuration and construction of the device body. As the mold is tilted on its axis to an operative gyration angle, the protrusions on each end of the body apply a moment force to the mold which produces a known resistance force on the gyratory compactor frame. Measurement of an internal angle of gyration is made while the resistance force is applied to the compactor frame and while the gyratory compactor gyrates the mold. The apparatus is then removed from the mold and the measured angle is obtained by connection to an external computer or directly read from the device. A display may be built into the body of the device to display the result directly. The components of the device inside the cylindrical body may be alternately arranged so that the angle measurement probes extend from the top or bottom or side wall of the cylindrical body. Use of an internal loading device in combination with an internal gyration angle measurement device is also disclosed. Use of an internal loading device in a gyratory compactor which is instrumented to measure an internal gyration angle external of the mold is also disclosed.

Provided is a C-axis gyration center calibrating device and method based on double standard ball. A machine tool is provided with an X-axis guide rail and a Z-axis guide rail; a C axis is provided with a rectangular supporting seat having a 3R clamp, and a vacuum chuck having a first standard ball; a transition is in connection with the 3R clamp and a second standard ball; a measuring sensor fixing piece is located in front of a Y-axis lifting platform and is provided with a white light confocal displacement sensor. The method comprises: adjusting the position of the first standard ball, driving the C axis and the white light confocal displacement sensor, aligning the spherical crown position of the first standard ball, and recording a position PR (x,y) to be set as a gyration center position of the first standard ball; installing the 3R clamp and the second standard ball on the supporting seat, executing the spherical crown top point scanning on the second standard ball, adjusting the position of the white light confocal displacement sensor, allowing the white light confocal displacement sensor to align with the spherical crown position of the second standard ball, and recording a position PS (x,y) to be set as a reference center position of the second standard ball; and obtaining delta P through difference calculation. The device and method guarantee the service life of an on-line measurement device, and avoid mechanical part interference in a processing process.

The method of regulating inclination angle of straightening roller includes setting the straightening roller on some bracket to form one integral capable of rotating around the gyration center of the bracket, and rotating the bracket to rotate the straightening roller so as to regulate its inclination angle. The gyration center of the bracket is the central axis of one gear train, the bracket has gear ring meshed with the gear train, and the gear train is driven with one motor driven speed reducer. Of the gear train, each of the gears has rotation angle in linear relationship with the inclination angle of straightening roller and great transmission ratio. The changed angle is measured with angle measuring sensor and other detection elements. The present invention has simple compact structure, precise rotation angle regulation, high precision and other advantages.

The invention discloses an arm frame control method, equipment and system and an engineering machine. The control method includes the steps that the gyration center position and the gyration angle of an arm frame and inclination angles and extend lengths of all arm sections are received; the extend length of the arm frame is calculated according to the inclination angles and the extend lengths of all the arm sections; the tail end position of the arm frame is determined according to the gyration center position, the extend length and the gyration angle; according to the tail end position, the gyration center position and the allowable operating range of the arm frame, the maximum extend length Lmax of the arm frame at the current gyration angle and the gyration angle range, from alpha1 to alpha 2, of the arm frame gyrating under the condition of keeping the current arm extending posture are determined; according to the maximum extend length Lmax and the gyration angle range from alpha1 to alpha 2, the arm frame is manipulated to work in the allowable operating range.

The invention relates to a novel large-span hybrid-driven unmanned underwater vehicle, which comprises a shell structure, a large-span structure, an antenna, a gliding wing, a propeller and a tail fin. The invention is characterized in that: a buoyancy adjusting system, a pitch adjusting system, a control system, a throwing device, a sensor and a communication antenna are arranged in the shell structure; The underwater vehicle can realize the switching of three motion modes according to different tasks and work requirements, and achieve the requirements of saving energy and completing tasks. Mixed gliding and propulsion modes can be used when accelerated diving and descent are required; By controlling the different differential speeds of the two wing-end thrusters, the spatial spiral motion with different radii of gyration can be realized. By adjusting the wing structure and the overall layout of the glider, the anti-disturbance flow performance during gliding is optimized, and the stability of the unmanned aerial vehicle is improved. The underwater vehicle realizes the combination of the advantages of the glider and the AUV, and has the advantages of long range, sufficient space,powerful function, high stability, and strong maneuverability.

The invention discloses a formwork grabbing and lifting aligning machine and a using method thereof. The aligning machine comprises a get-on part and a get-off part; the get-on part comprises a base, a large arm hinged to the base, a telescopic arm, a small arm and a rotating arm, wherein the telescopic arm, the small arm and the rotating arm are in sliding connection with the large arm; the telescopic arm, the small arm and the rotating arm are sequentially connected end to end; the small arm and the rotating arm are connected through a rotating arm slewing bearing; the plane where the rotating arm slewing bearing is located is kept perpendicular to the plane formed by the small arm and the telescopic arm all the time; the tail end of the rotating arm is provided with a gripper; the rotating arm is connected with the gripper through a gripper slewing bearing; and the included angle between the gyration center line of the gripper and the rotating arm is zero. The formwork grabbing and lifting aligning machine is easy and convenient to operate, high in operation efficiency, high in operation quality and capable of reducing the manpower cost and improving the work efficiency.

The invention discloses a drilling pouring pile hole formation one-pile double-machine construction method, comprising the following steps: both an upper clay layer and a completely weathered rock layer use a rotary drilling rig to drill; the rotary drilling rig at a pile position is mounted; a cutting tool for is welded on the drilling bucket edge of the rotary drilling rig, and is driven by the rotation of a telescopic drilling stem to cutting the soil layer rotatablely. The rotary drilling rig can drill in dry soil or drill with slurry. When reaching a strong or middle weathered rock layer, the rotary drilling rig is replaced to a gyration drilling rig; a special alloy roller drill is mounted on the gyration drilling rig; a forward or backward circulation drilling process is utilized; mortar circularly protects the wall; the drilling operation is executed until the designed hole depth is reached; and an air compressor is used for clearing the hole or the mortar replacement is used for clearing the hole. The method of the invention is simple, economic and practical; besides, the method also improves 50 percent of the drilling speed, shortens the hole formation time, lowers the hole formation cost, decreases the power consumption, saves the energy, reduces the discharged mortar, reduces the environmental pollution, and improves the hole formation quality and the quality of pile foundation constriction of the integral building work.

The invention discloses an omnibearing independent mobile robot walking mechanism capable of changing modes of motion consists of a quadricycle body, two sets of lead screw slide block mechanisms sharing the same structure, three sets of transmission gear trains and four sets of wheel steering linkages sharing the same structure, wherein the wheel steering linkage consists of a crank-rocker mechanism, the steering linkages of the two front wheels and the steering linkages of the two rear wheels are respectively share a crank, and two crank gyration centers are respectively positioned on the front and rear slide block central shafts of the lead screw slide block mechanism. The cranks of the steering linkages can rotate or the crank centers can move with the slide block through switching of gear engagement, thereby changing modes of motion of the mobile robot. Three modes of motion, namely normal walking with rear wheel guiding, motion of translation, rotation with zero radius, can be realized through different combinations, thereby enabling omnibearing motion capacity and reducing the quantity of motors used. The change of modes of motion through the switching mechanism can meet the motion requirements of farmland operation and also ensure reliable motion characteristics.

The invention relates to a hydraulic rotary tailstock suitable for processing a rotary type heavy workpiece with high speed including a tailstock body, a hydraulic cylinder arranged at the back end surface of the tailstock. A piston shaft is arranged in the hydraulic cylinder and the piston shaft is driven to move forwards and backwards by hydraulic pressure. The piston shaft is connected with a main shaft of the tailstock as a whole body. The main shaft of the tailstock moves synchronously with the piston shaft. A front end hole of the main shaft of the tailstock is provided with a tailstock sleeve supported by a bearing. An inner taper of the tailstock sleeve is cooperated with an outer taper shank of a tip and connected as a whole body. When the workpiece rotates at a high speed, the rotation of the tip and the tailstock sleeve are realized. The invention has the advantages of good supporting performance, high automatization degree, high manufacture efficiency and excellent processing effect on the heavy workpiece requiring a high precision.

A rotary-type sludge drying / feeding device used with a sludge incinerator is provided, which comprises a hopper, a spiral feeder, a rotary-type drum and a supporter frame. The front end of the rotary-type drum is connected with the discharge end of the spiral feeder. The hopper is connected with the feed end of the spiral feeder. A fume outlet is disposed at the front end of the rotary-type drum and connected thereon with a fume duct. A fume recirculation blower is arranged inside the fume duct. Inner fins are arranged on the inner wall of the rotary-type drum. A mixing shaft is arranged axially inside the rotary-type drum and provided thereon with mixing paddles. The rotary-type drum feeds the sludge incinerator, and dries the sludge inside by using the hot fume inside the sludge incinerator, thereby realizing the drying / incineration integrated treatment. The device omits the intermediate links between the drying and incineration links, such as sludge cooling, sludge storage, sludge transportation and heat medium drying; simplifies the system; reduces the occupied area; and reduces the investment and cost; and minimizes the heat loss.

The invention discloses a roller combined gyration-type used sand reconditioning system, which comprises a roller reconditioning device, a dust removing device, a secondary demoulding device, a conveying device and a sand mixing device. A discharging port of the roller reconditioning device is connected with a feeding port of the secondary demoulding device. The dust removing device is located on the lateral portion of the roller reconditioning device. A discharging port of the secondary demoulding device is connected with the conveying device. The sand mixing device is located at the position of a discharging port of the conveying device. The roller combined gyration-type used sand reconditioning system integrates the basic functions of smashing, demoulding, dust removing, conveying and the like in an identical machine body, removes intermediate links to the maximum degree and preferably chooses the process scheme of jump running on the condition of gear shifting. The jump running process technology on the condition of gear shifting not only can be used in the sand reconditioning system but also can be used in other fields or other mechanical products. The jump running process technology is of special significance.

A gyratory compacting apparatus and data capture and display system for compacting a specimen of material within a mold as the mold is gyrated, and capturing and displaying data on an internal angle of gyration during mold gyration, the apparatus and system having a generally cylindrical mold for holding a specimen of material to be compacted, at least one plate in the mold in contact with material in the mold and which moves relative to the mold as the mold is gyrated, and at least one sensor which measures an internal angle of gyration between the mold and a mold plate and captures internal gyration angle data for real-time display of internal gyration angle data during gyration and compaction. Alternative arrays of internal gyration angle sensors are disclosed.

The invention discloses a clamp used for aligning a multi-boss workpiece, which is provided with a boss gyration position aligning structure. The aligning structure is provided with a slide positioning structure which comprises a slide bar (18) and a positioning rod (3) vertically connected with the slide bar (18); when workpieces (5, 6) are not tightly clamped, the positioning rod (3) is connected with the lateral surfaces of two bosses. The invention also provides a method for aligning and positioning the clamp. With the technical proposal, the invention solves the problem of positioning difficulty of the boss when a multi-boss workpiece with position requirement between distribution of the boss and processing surfaces. The clamp is particularly applicable to processing multi-workpiece and multi-station, and has the advantages of accurate and reliable clamp positioning, high processing precision and convenient operation.

The invention relates to a separated drive spindle system of ultraprecision machining tool, relating to a ultraprecision gas static pressure spindle system. The invention is designed for solving the problem in the existing ultraprecision machining tool that an electric motor and the spindle of the spindle system are in rigid connection, power transmission effect is poor and the rigid connection affects gyration precision of the spindle. After being electrified, an AC servo motor starts to rotate and drives a flexible drive assembly to rotate; a flat belt rotates to drive a driving lever to produce torque to drive the spindle to rotate for carrying out cutting. High pressure air gets in through a radial air inlet hole, is throttled through a radial small throttling hole and forms a radial gas static pressure film at the gap of the radial gas film; the radial gas static pressure film supports the spindle and radial load thereof; high pressure air is throttled through a first axial small throttling hole and then forms an axial gas static pressure film at the gap of an axial gas film, the axial gas static pressure film supports the spindle and axial load thereof. The invention is applied to ultraprecision machining tools and milling machines with various forms.