629 results about "Air bearing" patented technology

The invention relates to an air blower based on magnetic and gas combination axial force balance and a control method of the air blower, and belongs to the technical field of axial force regulation and control of air blowers. An axial air suspension bearing and an axial magnetic bearing are arranged in a main machine of the air blower, the axial magnetic bearing is connected with a magnetic bearing controller, and the magnetic bearing controller controls the axial position of a rotor by controlling the current of the axial magnetic bearing; an axial displacement sensor and a radial displacement sensor are arranged to detect the displacement of the rotor; and the main controller is used for controlling the starting and stopping of the axial magnetic bearing and the main machine based on the axial displacement and the radial displacement of the rotor, and sending out early warning. According to the magnetic and air combined axial force balance device, the axial magnetic bearing is used for providing active control force, the air bearing is used for providing passive support, the stability and reliability of a system are improved, and an important protection effect is achieved on core parts of an air blower.

The invention provides an embedded magnetic-gas hybrid bearing, and belongs to the field of bearings. The problems that an existing embedded magnetic-gas hybrid bearing is complex in machining process, and an air bearing part is poor in reusability and difficult to repair are solved. Comprising an inner supporting structure and an outer supporting structure which are embedded into the two sides of the magnetic-gas hybrid bearing seat, an outer supporting tooth-shaped table of the outer supporting structure is inserted between stator magnetic poles of the magnetic suspension bearing and spliced with an inner supporting tooth-shaped table of the inner supporting structure to form a complete cylindrical surface, and a corrugated foil wraps a top foil and is arranged in the spliced cylindrical surface. The shaft neck can be prevented from being in direct contact with the magnetic pole, and the working rotating speed range and the adaptive load of the magnetic suspension bearing and the air bearing are expanded; a protective bearing of the magnetic suspension bearing is replaced by the air bearing, so that the axial length of the rotor is reduced, and the shafting stability is improved; and installation and maintenance are convenient.

A low gravity simulator configured to place an object under a simulated low gravity force is disclosed. The low gravity simulator comprises: a substantially vertically extending support column, wherein the support column comprises an air bearing; a boom, wherein the boom is mounted to the support column, and wherein the boom is rotatable about a vertical axis; a carriage, the carriage translatably mounted on the boom so that the carriage is, in use, movable backwards and forwards along the boom; a cable supported by the carriage and connectable at one end, in use, to the object; and a counterweight attached to the cable at an opposing end to apply a biasing force to the cable. The counterweight is restrained by the support column and the air bearing is configured to facilitate the motion of the counterweight with respect to the support column.

The invention relates to the technical field of air compression stations, in particular to an air bearing-based digital energy air compression station with a noise reduction effect, which comprises a machine room, and a screw air compressor, a cooler, an oil-water separator, a first air storage tank, a dryer, a filter and a second air storage tank which are sequentially connected are arranged in the machine room. The first air storage tank is further connected with a first air supply pipe, and the second air storage tank is further connected with a second air supply pipe. An air bearing is selected for the screw type air compressor, a third air supply pipe is arranged between the filter and the second air storage tank, the third air supply pipe is connected with the air bearing, and part of compressed air is continuously input into an air path of the air bearing through the third air supply pipe. According to the screw type air compressor, mechanical friction can be avoided through the air bearing, so that noise is further reduced, the noise reduction effect of the digital energy air compressor is improved, and compressed air can be conveniently obtained by the air bearing in an air compression station.

The invention relates to a high-rotating-speed multi-stage centrifugal pump supported by an air film. Efficient liquid conveying is achieved through unique design. A motor in the driving mechanism is powered on, power is stably transmitted to a pump shaft through a coupler, and a multi-stage impeller is driven to rotate at a high speed. Liquid flows in from the water inlet in the bottom of the pump body, obtains speed energy under the centrifugal force of the impeller and is converted into pressure energy through the multi-stage guide vanes, and efficient conveying is achieved. Gas is stored in a gas chamber in a stator of the air bearing and forms an air film through a multi-stage shrinkage nozzle to support a pump shaft, friction resistance is reduced, and high rotating speed is adapted. The rubidium magnet in the rotor shaft sleeve interacts with the magnetic fluid cavity, so that sealing is enhanced, and adjustment is assisted. The mechanical seal and the oil seal prevent liquid leakage and protect the air bearing. An overflow cavity and an overflow groove adjust pressure in the pump, a water inlet filter screen intercepts impurities, and a pull rod stabilizing structure is reinforced. The centrifugal pump effectively solves the problem of a traditional centrifugal pump at a high rotating speed and has the advantages of high efficiency, stability, long service life and the like.

The invention relates to a dynamic and static pressure mixed gas radial bearing, and belongs to the technical field of air bearings. The shaft sleeve is sleeved with the bearing seat, a limiting part is arranged outside the shaft sleeve, and a limiting groove is correspondingly formed in the inner wall of the bearing seat; in the radial direction, the bump foil assemblies are arranged between the shaft sleeve and the bearing seat, and in the circumferential direction, the bump foil assemblies are arranged between the limiting parts at intervals; a plurality of first air inlet holes are formed in the bottom of the limiting groove, a plurality of second air inlet holes are formed in the limiting part, and the first air inlet holes correspond to the second air inlet holes in position. According to the design, the integrity of the bump foil assembly can be guaranteed, the structure is simple, machining is convenient, and mounting and dismounting are more convenient. When the speed of the rotor is low, the static pressure gas forms a gas film, and the bearing capacity of the dynamic and static pressure mixed gas radial bearing is enhanced. When the rotating speed of the rotor is high, dynamic pressure can be generated on the basis of static pressure, and the dynamic pressure and static pressure mixed gas radial bearing has larger bearing capacity due to superposition of the dynamic pressure and the static pressure.

The invention provides a single-stage centrifugal air compressor. An air path cooling system of the single-stage centrifugal air compressor comprises a first cooling air path and a second cooling air path. The first cooling gas path comprises a shell cooling gas channel; an annular channel; a plurality of bearing seat air inlets; the housing cavity is provided with a main air outlet; the bearing seat air outlet hole is communicated between a fit clearance between a first radial air bearing, far away from the volute, of the motor and a motor stator and the housing cavity; the second cooling air path comprises an air inlet gap between the back of the impeller and the end face of the shell close to the impeller, a fit gap between a second radial air bearing of the motor close to the volute and the main shaft, a fit gap between the stator and the main shaft, a fit gap between the stator and the first radial air bearing and a bearing seat air outlet hole which are communicated in sequence; the air inlet gap communicates with the air outlet side of the impeller. The first cooling air path and the second cooling air path can cool rotor parts at different parts of the motor, so that the cooling effect on the rotor parts of the motor is improved, and the use performance of the motor is ensured.

A system that reduces the amount of contaminants that enters a process chamber or air bearing via a movable shaft is disclosed. The movable shaft includes an outer shell made from a material having a low coefficient of thermal expansion. This allows the outer shell to be heated to sufficiently high temperatures to avoid condensation of contaminants on the shaft, while minimizing any change in the diameter of the shaft, which passes through an air bearing. The shaft may also have a temperature modification device disposed adjacent to the interior surface of the outer shell. In some embodiment, the shaft may include an inner liner. An insulative layer may be provided between the inner liner and the outer shell, such that the temperature of the outer shell does not cause the inner liner to thermally expand.

The utility model discloses an air floatation spindle transverse plane burr removing device which comprises an installation frame, a conveying belt device is arranged in the installation frame, and a first telescopic air cylinder is fixedly arranged on the side, away from the conveying belt device, of the installation frame. The output end of the first telescopic air cylinder penetrates through the mounting frame, extends into the mounting frame and is fixedly provided with a connecting block, a moving frame is fixedly arranged on the surface of the connecting block, a supporting shaft is fixedly arranged in the moving frame, a supporting roller is rotationally arranged on the surface of the supporting shaft, and a supporting frame is arranged at the top of the mounting frame. The device comprises a supporting frame, a lifting assembly is arranged at the top of the supporting frame, the supporting frame is provided with a connecting frame through the lifting assembly, and a driving assembly is arranged in the connecting frame. And the applicability of the device and the deburring speed of the transverse surface of the air-floating main shaft are improved.

The invention discloses a die bonding head. The die bonding head comprises a power element, a transmission air bag, an air bearing and a suction nozzle mechanism, the air floating bearing comprises an air floating shaft sleeve and an air floating shaft, the air floating shaft is rotationally arranged in the air floating shaft sleeve, and an air film gap is formed between the air floating shaft and the air floating shaft sleeve; the power element is connected with the transmission air bag and is used for outputting rotary motion; the transmission air bag is connected with the first end of the air floating shaft and used for power transmission. And the suction nozzle mechanism is arranged at the second end of the air floating shaft. The transmission air bag is arranged between the power element and the air floating bearing, so that power output by the power element is transmitted to the air floating shaft after passing through the transmission air bag and is finally transmitted to the suction nozzle mechanism. During die bonding, the transmission air bag buffers the pressure applied by the die bonding head to the wafer, thereby preventing the rigid impact of the die bonding head to the wafer, preventing or reducing the breakage of the wafer, and improving the safety of the wafer.

The invention discloses a high-temperature composite coating for a high-speed air bearing gas foil and a preparation method of the high-temperature composite coating. The bottom layer of the coating is a nickel-chromium alloy coating, the middle layer of the coating is a nanometer aluminum oxide reinforced titanium alloy coating, and the surface layer of the coating is a zirconium oxide or aluminum oxide coating. The high-temperature composite coating disclosed by the invention can be kept stable in an extremely high-temperature environment, and excellent heat insulation performance is provided. The nanometer aluminum oxide reinforced titanium alloy in the middle layer provides good mechanical performance and enhances the impact resistance and abrasion resistance of the coating, the nickel-chromium alloy in the bottom layer provides good adhesive force and corrosion resistance and ensures firm combination of the coating and a base material, and the surface layer further improves the high temperature resistance and heat insulation performance of the coating.

The invention relates to the field of mechanical equipment, in particular to a pipeline direct connection type air suspension turbine vacuum pump which comprises a shell, the shell is through in the front-back direction, a motor is installed in the shell and comprises a motor sleeve, a motor stator is installed in the motor sleeve, a motor rotor is rotatably installed in the motor stator, and an impeller is installed on the motor rotor. A radial air bearing used for supporting a motor rotor to rotate is installed in the shell, the motor sleeve and the shell are mutually spaced, a spaced cavity of the motor sleeve and the shell forms a main channel for airflow to pass through, the motor sleeve is through front and back, an inner cavity of the motor sleeve forms an auxiliary channel for airflow to pass through, and a sealing cover plate is installed on the front side of the motor sleeve. The impeller is located in front of the sealing cover plate, the sealing cover plate seals the opening in the front side of the motor sleeve, and a plurality of flow dividing holes are formed in the sealing cover plate and penetrate through the sealing cover plate. A double-channel structure is arranged in the vacuum pump, air inlet drainage can be directly used for cooling a main machine, and meanwhile the air outlet pressure of a single-channel structure is relieved.

The invention discloses a porous medium static pressure air floatation spline which comprises a spline shaft, a spline sleeve outer sleeve, an air bearing, a spline sleeve, a flange sleeve, a valve plate and a porous medium. The air floating spline is cylindrical, a plurality of air paths and static pressure cavities are formed in the air floating spline, porous media are mounted in trapezoidal grooves of the spline housing, and the internal static pressure cavities enable circumferential torsional moment applied to the spline shaft to be borne by the porous media and static pressure supports between trapezoidal tooth slopes on the spline shaft when the spline works; radial force applied to the spline shaft is borne by a static pressure support between the porous medium and the inclined plane of the trapezoidal teeth and a static pressure support on the inner ring of the air bearing; the axial load applied to the outer sleeve of the spline housing is borne by the annular static pressure cavity and the annular static pressure cavity; according to the porous medium static pressure air floatation spline, abrasion of the spline in the working process is reduced, and the problem that the spline precision is affected due to abrasion after a traditional ball spline works for a period of time is solved.

The invention belongs to the technical field of aerospace force measurement test power measurement, and discloses a three-component micro-load balance calibration device and a three-component micro-load balance calibration method. The three-component micro-load balance calibration device comprises a pulley, an air bearing, a vibration exciter, a loading head, a calibration support rod, a six-degree-of-freedom adjusting mechanism, a laser positioning source, a nylon rope, a spherical loading point and the like. The six-degree-of-freedom adjusting mechanism is connected with the balance, the balance is fixedly connected with the calibration supporting rod, one end of the calibration supporting rod is fixedly connected with the balance, the other end of the calibration supporting rod is connected with the loading head, the loading head is connected with the pulley through the nylon rope, the air bearing is arranged in the pulley, the vibration exciter is arranged on the pulley base, and the laser positioning source is installed on the support. And the light source of the laser displacement meter can be projected to the loading head. According to the invention, the balance calibration of the micro-load balance with the measuring range within 10mN can be realized, and the defects that the loading cannot be realized due to the too small measuring range of the micro-load balance, the calibration result of the micro-load balance is influenced due to the too large uncertainty of the calibration system and the like are overcome.

The invention discloses a pneumatic control mounting device based on an air bearing. The pneumatic control mounting device comprises a driving module, a mounting module and an angle adjusting mechanism for driving the mounting module to swing, the mounting module is provided with a through hole structure used for observing the angle of the picked chip. The mounting module comprises an air bearing and a suction nozzle assembly, and the air bearing comprises a bearing seat and a journal penetrating through the bearing seat; the suction nozzle assembly is detachably connected with the shaft neck; the bearing seat is in sliding connection with the shaft neck; a driving cavity is formed between the bearing seat and the shaft neck, air pressure is provided for the driving cavity under the control of the pressure adjusting part, the shaft neck is pushed to extend outwards to mount a chip, and the mounting force on the chip is controlled. According to the application, the pressure of the gas supplied into the driving cavity is controlled through the pressure adjusting part, the shaft neck is pushed through the gas pressure to drive the suction nozzle assembly to mount the chip and apply the mounting force, the mounting force control is more accurate, the overall structure is simple, and meanwhile, the state of the picked chip is observed and adjusted through the perforation structure, so that the chip mounting precision is improved.

The invention discloses an air floatation spindle, machining equipment and an air floatation spindle control method, the air floatation spindle comprises a machine body, a shaft core assembly and air floatation bearing assemblies, the shaft core assembly is supported on the machine body through the air floatation bearing assemblies, the air floatation bearing assemblies comprise the first air floatation bearing assembly, the first air floatation bearing assembly comprises a bearing sleeve and a shaft core sleeve, the bearing sleeve is installed on the machine body, and the shaft core sleeve is installed on the machine body. The shaft core assembly is sleeved with the shaft core sleeve, the bearing sleeve and the shaft core sleeve are both made of memory metal, and in the first temperature interval, the inner circumferential face of the bearing sleeve and the outer circumferential face of the shaft core sleeve are cylindrical faces; and in the second temperature interval, the inner circumferential surface of the bearing sleeve and the outer circumferential surface of the shaft core sleeve are conical surfaces. The first air bearing assembly is made of memory metal, through the phase change characteristic of the memory metal, shape adjustment and rigidity self-adaption optimization of the bearing working surface and the shaft core are achieved, and the dynamic performance and the machining adaptability of the main shaft in the wide working condition range are remarkably improved; therefore, one main shaft can meet various machining working conditions such as scribing, drilling and grinding.

The utility model discloses a portable air floating fan rotor installation positioning tool, and relates to the technical field of air floating fan rotor installation, the portable air floating fan rotor installation positioning tool is provided with a flange fixing disc, a short nylon pipe and a long nylon pipe, the flange fixing disc is used for fixing a rotor pull rod on an end cover, and the short nylon pipe is used for fixing the short nylon pipe on the end cover; the short nylon tube is responsible for protecting the rotor from being in contact with the stator and sliding lubrication, the long nylon tube is responsible for guiding installation of the bearing seat and the end cover on the other side, and the nylon tubes are conical and can be directly inserted and installed, so that the nylon tubes can be detached after being assembled by ingeniously utilizing assembly holes in a motor shell, and a product is not influenced at all. The nylon material is low in cost, lubrication can be kept, the rotor and the stator can be in indirect contact, the assembling requirement can be met, the defect that an air bearing cannot bear too heavy force is overcome, the overall structure is small and exquisite, dismounting and carrying are convenient, and the air bearing is more suitable for an existing air floating fan.

The invention relates to the field of bearing testing, in particular to an air bearing testing device which comprises a high-precision platform, a high-speed motor and a thrust sensor, the thrust sensor is slidably connected to one end of the high-precision platform through a supporting frame, and the high-speed motor is fixed to the other end of the high-precision platform through a fixing base. A motor rotor is arranged in the high-speed motor, a bearing seat and a thrust plate are arranged at the end, facing the thrust sensor, of the motor rotor, an air bearing seat is arranged between the high-speed motor and the thrust sensor and slidably connected to the upper end face of the high-precision platform, and a probe head is arranged at the end, facing the air bearing seat, of the thrust sensor. An air bearing is installed on the side, facing the thrust plate, of the air bearing seat. By using the testing device, different types of air bearings can be replaced, the working rotating speed of the bearing can be controlled in real time, the load conditions in different working states can be recorded, an accurate testing means is provided for testing the dynamic pressure air bearing, and the development of the air bearing is facilitated.

The invention relates to a radial foil air bearing and air suspension equipment, and belongs to the technical field of air bearings. The radial foil air bearing comprises a bearing seat, a bottom foil, a bump foil, a top foil and a shaft sleeve which are sequentially arranged from outside to inside; a plurality of bump foils are sequentially arranged on the inner side of the bottom foil along the circumference, one end of each bump foil is fixed on the bottom foil, the other end of each bump foil is a free end, and each bump foil comprises a plurality of multistage elastic units which are connected with one another; two top foils are sequentially arranged on the inner side of each bump foil in the circumferential direction, one end of each top foil is a fixed end, and the other end of each top foil is a free end; the shaft sleeve is used for limiting the bottom foil and the bump foil and the top foil arranged on the bottom foil between the bearing seat and the shaft sleeve. The heat dissipation problem of the radial air bearing is solved by arranging the two top foils on the bump foil; and meanwhile, the bump foil is provided with the three bulges of which the heights are sequentially reduced, so that the bearing capacity of the radial foil air bearing can be improved through the synergistic effect of the bump foil and the top foil.

The invention relates to the technical field of air bearing testing, in particular to an air bearing rigidity testing device and method, and the device comprises a test board, an air bearing installation mechanism, an air film gap adjustment mechanism, a levelness adjustment mechanism and a measurement system. The air bearing mounting mechanism is inversely mounted at the top of the test bench, and a gap detection assembly is arranged on the air bearing mounting mechanism; the air film gap adjusting mechanism is arranged in the test bench and right faces the lower portion of the air bearing installation mechanism. The levelness adjusting mechanism comprises at least three flexible hinges, and the flexible hinges are distributed between the fixing base and the bearing table top in a three-point supporting mode. The measuring system comprises a control unit, and the control unit is integrated with a closed-loop control algorithm and is in communication connection with the gap detection assembly and the gas film gap adjusting mechanism. Through the innovative air film gap adjustment mode, the levelness guarantee structure and the inverted design of the air bearing installation mechanism, micron-sized air film gap control is achieved, and the rigidity testing precision is remarkably improved.

A magnetically preloaded air bearing, comprising an air bearing base (1). A plurality of pre-loading assemblies (2) are arranged around the air bearing base (1), an annular air bearing structure (11) extends and protrudes from one side of the air bearing base (1), an air inlet channel (12) extends through the other side of the air bearing base (1), a flow distribution assembly (3) is provided in the air bearing base (1), the side edge of the flow distribution assembly (3) is arranged corresponding to the inner side of the air bearing structure (11), and the air inlet channel (12) is arranged corresponding to the flow distribution assembly (3); and the pre-loading assemblies (2) are connected to the air bearing base (1) by means of fixing rods (22). The magnetically preloaded air bearing and a linear platform comprising same have high stability and high precision, and are not prone to generation of the air hammer effect.

The utility model relates to a motion platform and a perovskite coating device. The motion platform comprises a platform base and a motion frame, the first guide mechanism comprises a first rail and a first air bearing, the first rail is arranged on the platform base, the first air bearing is installed on the moving frame and located between the first rail and the moving frame, and the first air bearing is used for forming an air film between the first air bearing and the first rail and bearing first air buoyancy force for supporting the moving frame on the first rail; the first pre-tightening mechanism comprises a first magnetic attraction part installed on the moving frame and a first magnetic attraction matching part installed on the platform base, and the first magnetic attraction part and the first magnetic attraction matching part generate a magnetic attraction effect so that the first magnetic attraction part can bear first magnetic attraction force opposite to the first air buoyancy force in direction.

The invention discloses an air bearing, a foil and a foil forming device, and relates to the technical field of air bearing production and manufacturing. The air bearing comprises an air bearing body, the air bearing body comprises a top foil, a welding point, a bearing sleeve and a shaft rod, the foil comprises a foil body, the foil body is wrapped and assembled on the outside of the top foil, the bearing sleeve is matched and connected on the outside of the foil body, and the foil forming device comprises a frame, a forming unit, a guide unit and an adjustment unit, the inner end of the frame is provided with an auxiliary unit that cooperates with the forming unit, and the adjustment unit drives the auxiliary unit to move horizontally. The invention ensures that the local thickness of the foil is uniform during the forming process, and corrects when the foil is locally deformed, thereby improving the forming quality of the foil and thus improving the quality of the foil air bearing.

The invention relates to the technical field of air bearings, in particular to an air flexible supporting tilting pad bearing with an interlayer type damping structure and a manufacturing method, the air flexible supporting tilting pad bearing comprises a bearing outer ring, and four tilting pads are connected to the inner side of the bearing outer ring through four sets of damping structures; the damping structure comprises a swing spring, and an interlayer type damping layer is arranged in the swing spring. An air inlet hole communicated with an external air supply channel is formed in the end face of the tilting pad, a pressure equalizing groove is formed in the inner side face of the tilting pad, and a capillary throttling hole communicated with the air inlet hole is formed in the pressure equalizing groove; the high-strength and high-toughness alloy steel and the nitrile rubber with good elasticity and oil resistance are effectively combined, so that the bearing capacity and the overall stability of the bearing structure are enhanced, and meanwhile, the vibration reduction and buffering characteristics of the bearing structure are remarkably improved; the multi-material collaborative design is beneficial to improving the operation reliability and prolonging the service life of a bearing system, and the comprehensive performance requirement for a high-performance vibration reduction supporting component under the complex working condition is met.

This invention belongs to the field of hydrodynamic air bearing technology, and relates to a hydrodynamic air bearing testing platform. The platform includes a platform body, an X-axis precision fine-tuning moving platform, and a Z-axis precision fine-tuning lifting platform, each fixed to the platform body. A high-speed motor is fixed on the X-axis precision fine-tuning moving platform. The power output shaft of the high-speed motor is connected to a thrust plate. A pressure sensor and a torque measuring instrument measure the force and torque on the axial force output rod and torque output rod, respectively. A bearing mounting base is positioned opposite to the thrust plate and is used to fix the hydrodynamic air bearing to be tested. The X-axis precision fine-tuning moving platform drives the high-speed motor and the thrust plate to move horizontally, while the Z-axis precision fine-tuning lifting platform drives the linear bearing housing and the bearing mounting base to move vertically. This invention's testing platform can accommodate different types of air bearings, and can control the bearing's operating speed and air film thickness in real time, recording the load conditions under different operating states.

The invention provides a double-sided polishing machine with high-precision non-contact flexible loading force control. The double-sided polishing machine comprises a supporting assembly, a polishing assembly, a loading assembly and a control system. The supporting assembly is composed of a base and a portal frame. The polishing assembly is installed on the base. The loading assembly comprises an air cylinder, an air source, an air bearing, a top force transmission disc and a jacking disc. The top force transmission disc is fixed to the polishing assembly, the cylinder is fixed to the portal frame, and a piston rod of the cylinder is hinged to an upper end ball of the air bearing. The air bearing is located above the top force transmission disc, and an exhaust hole is formed in the lower end face of the air bearing. The jacking disc is located between the top force transmission disc and the upper polishing disc and connected with the air bearing through a connecting rod. The air source is used for supplying air to the air cylinder and the air bearing. The control system is used for controlling air conveying work of the air source. Through an air film formed by the air bearing and the top force transmission disc, the loading force of the air cylinder is transmitted to the polishing disc in a non-contact mode, the equipment stability is improved, and the machining precision is ensured.

The utility model discloses an air floating roller assembly and coating equipment. The air floating roller assembly comprises a base and a plurality of roller groups, the plurality of roller sets are horizontally arranged on the base at intervals, each roller set comprises an air floating roller, a tape passing gap is formed between every two adjacent air floating rollers, a pole piece penetrates through the tape passing gaps to be wound on the plurality of roller sets so as to form a U-shaped groove or an inverted U-shaped bulge, and the air floating rollers are suitable for generating airflow blowing to the pole piece so as to fix the pole piece; according to the air floating roller assembly, the pole pieces are wound on the roller sets, and U-shaped grooves or inverted-U-shaped protrusions are formed in the middle sections of the pole pieces, so that the pole pieces are stabilized, stable conveying of the pole pieces on the air floating roller assembly is guaranteed, shaking or deviation of the pole pieces in the tape conveying process is avoided, and the coating quality of the pole pieces is improved.

The invention provides a compressor, belongs to the technical field of compressors, and particularly relates to an air floatation centrifugal refrigerant compressor which comprises a motor shell, a motor stator, a compressor rotor part, an air floatation bearing, a volute and a motor end cover. The cooling air supply of the air bearing at the air inlet end of the main shaft comes from the air leaked into the motor shell behind the impeller; the liquid coolant can enter a motor cooling channel on the motor shell and cool a motor stator and a main shaft, and the liquid coolant enters a first cavity in the motor shell after absorbing heat and being gasified; and the cooling supplied air of the air bearing at the air return end of the main shaft comes from the air input into the first cavity from the motor cooling channel and the air from the air inlet end of the main shaft. According to the air flotation centrifugal refrigerant compressor, through the special bearing air supply design and the axial force balance design, the air supply and heat dissipation problems of the air flotation bearing are solved, the balance of the axial force of the rotor part of the compressor is also achieved, and the compressor is simpler and more compact in structure.

The present invention relates to the technical field of air-floating linear platforms. Provided is a six-degree-of-freedom air-floating moving apparatus, the apparatus comprising a base (1), a floating platform (2) being provided above the base (1), a micro-movement platform (3) being provided above the floating platform (2), the base (1) being provided with an X-axis motion assembly (4), the floating platform (2) being provided with a Y-axis motion assembly (5), the X-axis motion assembly (4) being capable of driving the floating platform (2) to move, the Y-axis motion assembly (5) being capable of driving the micro-movement platform (3) to move, a shock absorption assembly (6) for reducing shaking being connected to the bottom of the micro-movement platform (3), the X-axis motion assembly (4) comprising X-axis linear electric motors (40) and X-axis bearing platforms (41), the X-axis linear electric motors (40) being connected to two sides of the floating platform (2), the X-axis bearing platforms (41) being arranged on two sides below the floating platform (2), air bearings (7) being provided at the bottom of the floating platform (2), and the air bearings (7) fitting with the X-axis bearing platforms (41).

The invention belongs to the technical field of detection devices, particularly relates to a detection device based on distribution uniformity of rollers of a planetary roller screw, and provides the following scheme: the detection device comprises a base; a rotary driving module, an optical detection module, a contact stress detection module, a high-precision capacitive displacement sensor array mechanism and a mobile detection mechanism are sequentially arranged at the top of the base, the rotary driving module comprises a servo motor, an encoder and an air bearing, and the servo motor is fixedly connected with a coupler; and the coupler is in transmission connection with the planetary roller screw. The three-dimensional scanning assembly reconstructs the surface appearance of the roller through the line laser transmitter and the area-array camera, the thin film pressure sensor is embedded into a nut raceway to collect contact pressure, the strain gauge array is pasted to a lead screw shaft neck to monitor deformation, and the multiple sensors work cooperatively to comprehensively evaluate the distribution state of the roller from the dimensions of optical tracks, mechanical response and the like. And the one-sidedness problem of a traditional single detection means is solved.