33results about How to "Improve axial positioning accuracy" patented technology

The invention discloses a "well" shaped intersecting vehicle running track, which comprises a bearing surface for carrying the weight of the vehicle and a limiting surface for limiting the axial displacement of wheels. The bearing surface and the limiting surface are bilaterally symmetrical, and the section is in the shape of "convex". The invention solves the defects of the existing "I"-shaped track that the bearing surface cannot be continuous at the vertical and horizontal intersections, the vehicle is not running smoothly, and the limit surface and the wheel edge have high friction. The vehicle running track of the invention runs smoothly at the intersection, has small friction, and the force on the bearing surface is symmetrical and even.

The invention discloses a small high-dynamic and high-precision digital output magneto-electricity encoder and a mounting control method thereof. The digital output magneto-electricity encoder comprises a main shaft, a main body, a signal processing circuit board and a shell; the main shaft and the main body are in dual-bearing support mechanism; a radial magnetizing circular magnet is arranged ina main shaft counter bore; the signal processing circuit board is a wafer shape, and a Hall sensor chip is arranged at the center of the front, and a microcontroller and a CAN bus interface circuit are arranged at the back, and the signal processing circuit board is fixed on a step surface of the main body through bolts; a magnetic field signal is tested by adopting a diameter differential way, and a closed-loop tracking segmentation algorithm is used for quickly converge a measurement angle to input two orthogonal cosine signal corresponding angle values. Through the small high-dynamic and high-precision digital output magneto-electricity encoder and the mounting control method thereof disclosed by the invention, the interference resistance is improved, and the measurement angle precision and the response speed are improved.

The invention discloses a clamping device for a cover of a wind power gear box, and belongs to the technical field of machining. The clamping device for the cover of the wind power gear box comprisesa first base, a second base, a first clamping unit, a second clamping unit, a first pressing unit, a second pressing unit and an adjustment unit, wherein the first base and the second base are slidably connected with a worktable separately and can support the cover; the first clamping unit and the second clamping unit are arranged on the first base and the second base respectively and used for positioning of a first bearing hole and a second bearing hole respectively; the first pressing unit and the second pressing unit are slidably connected with the worktable and used for pressing the upperend faces of the first bearing hole and the second bearing hole respectively; and the adjustment unit is arranged on the worktable and can abut upon the edge of the bottom surface of the cover to support and adjust the height of the cover. The clamping device for the cover of the wind power gear box is high in universality, improves the production efficiency and reduces the production cost.

This invention relates to one airmobile alternating motor integral slides bus with imbed single clutch, which is fixed on end of rotation axis and to drive automobile alternating moor through hook wireless joint band between the drive band wheels of the axis end. This invention is one integration structure outer ring composed of clutch outer ring, front supportive ring and back supportive ring.

The invention provides a deepwater pipeline tie-back pose measuring device. The deepwater pipeline tie-back pose measuring device is composed of a measuring device (I), a measuring device (II) and an auxiliary measuring steel wire rope (3). The structure of the measuring device (I) mainly comprises an orthogonal inclination angle measuring mechanism, a flange butt joint mechanism and a pitching and horizontal swing angle measuring mechanism. The structure of the measuring device (II) mainly comprises an orthogonal inclination angle measuring mechanism, a flange butt joint mechanism, a rope length detecting mechanism and a pitching and horizontal swing angle measuring mechanism. By designing the corresponding butt joint mechanism, flange end face positioning and flange outer circle clamping are fully utilized, the axial positioning precision is improved, and therefore the distance between the flange end face and the stretching-out position point of the measuring rope is changed into a fixed value from an unknown quantity. According to the invention, the leading-out site of the steel wire rope in the measuring device is adjusted to the extension line of the central axis of the corresponding measured pipeline, so that the solving process is simplified on the basis of the transition matrix algorithm.

The invention relates to a positioning and bonding technology of a truncated-cone-shaped composite material part and a truncated cone-shaped metallic part. The technology comprises: the modification of a numerical control presser used for positioning and bonding, the manufacture of tooling for locking and positioning, trial assembly, glue application, official assembly, curing and the like. The technology adopts the specially designed tooling for locking and positioning and solves the technical problem of precise positioning in bonding process; the numerical presser is adopted to press assembly parts and as the axial force imposed by the numeric presser is even and stable, axial displacement generated during the traveling process of heat insulating sleeves of the assembly parts is prevented so as to guarantee the axial positioning and the consistency in axial degree of products after bonding; the technology adopts the numerical presser to press the assembly parts and has high precision in axial positioning, and the effective displacement quantity of the truncated-cone-shaped composite material part can be precisely controlled so as to guarantee that the square erection of the truncated cone-shaped composite material part can cross the distance up to the bottom of the truncated cone-shaped metallic part. The technology is used and promoted in practice, with a one-time bonding qualified rate up to over 99 percent, thereby greatly saving raw materials.

The invention discloses a radial locating unit and locating and clamping device for internal grinding of thin-walled cylinder workpieces, belonging to the technical field of machining processes. The radial locating unit comprises a supporting base and a supporting cover, wherein one end of the supporting cover is pivoted to the supporting base; the supporting base is provided with a clamping curved surface I, and the supporting cover is provided with a clamping curved surface II, so that workpieces are clamped; the supporting base is provided with a fixing part capable of fixing the supporting cover when the supporting cover and the supporting base are buckled; the clamping curved surface I is provided with inward concave structures to form hydraulic chambers I; the clamping curved surface II is also provided with inward concave structures to form hydraulic chambers II; and the locating and clamping device also comprises a hydraulically-supported axial locating driving unit. The radial locating unit and the locating and clamping device are uniform in clamping force, difficult to deform, more suitable for internal grinding of workpieces with small diameters and capable of improving the locating rigidity and precision, avoiding damage of the surfaces of the workpieces, effectively cooling grinding wheels and the workpieces and reducing thermal strain.

The invention discloses an optical fiber connector capable of accurate positioning, which comprises a connector socket and a connector plug, wherein the connector socket comprises a connector socket base, a locking wheel pressure ring, a locking wheel and an operating handle, and the connector socket base is fixed to an optical bottom plate of a confocal imaging system in a rigid manner; the locking wheel pressure ring, the locking wheel and the operating handle form a locking and limiting mechanism of the connector socket; the head part of the connector plug is provided with an axial positioning head, a rotary positioning head is arranged behind the axial positioning head, an optical fiber bundle passes through a hollow hole, and the optical fiber bundle and the connector plug are fixed to each other after being leveled; and the hollow hole faces just to a circular light passing hole when connector plug is inserted to the bottom part of a positioning groove of the connector socket base, and focused laser is injected into the optical fiber bundle through the circular light passing hole. The optical fiber connector adds a rotary positioning function, limits the optical fiber to rotate around the axis, achieves positioning in the rotational direction, applies a pressure on the connector through a spring, ensures stable and reliable locking of the connector, and can control the pressure.

The invention discloses a high-rigidity and high-precision spindle structure of a spiral bevel gear grinding machine. A spindle flange (3) is in interference fit and location with a grinding wheel spindle (1) by adopting a cylindrical surface and is fastened on the grinding wheel spindle (1) by eight M8 bolts. A grinding wheel transitional plate component (4) is interference fit and location withthe grinding wheel spindle (1) by adopting a cone surface and is fastened on the spindle flange (3). The grinding wheel transitional plate component (4) is mounted on the grinding wheel spindle (1) through a fastening screw (6) and twelve M8 bolts. The invention is the high-rigidity and high-precision spindle structure of a spiral bevel gear grinding machine with enough connection intensity and ahigh-rigidity and high-location precision grinding head when grinding, thus improving the rigidity of the grinding wheel spindle, making the machining accuracy more stable and improving the overall performance of a machine tool.

The invention is suitable for the field of microscope imaging, and provides a three-dimensional fluorescence nano microscope imaging method and a three-dimensional fluorescence nano microscope imaging system, and image equipment. The method comprises the following steps of: producing exciting light; converting the exciting light into a laminar exciting beam; making the laminar exciting beam act on a sample; detecting a fluorescent light emitted by a fluorescent label in the sample layer on which the laminar exciting beam acts; transversely positioning to acquire the two-dimensional position of the fluorescent label; axially positioning to acquire the axial position of the fluorescent label; three-dimensionally reconstructing, combining the two-dimensional position with the axial position to acquire a three-dimensional nano resolution image of the sample layer on which the laminar exciting beam acts; axially scanning to acquire the three-dimensional nano resolution images of different sample layers; and acquiring the three-dimensional nano resolution image of the complete sample. Through the three-dimensional fluorescence nano microscope imaging method and the three-dimensional fluorescence nano microscope imaging system, and the image equipment, the high-precision three-dimensional nano microscope imaging is realized by taking the laminar light beam as the exciting light, and combining with axial scanning, and the method, system and equipment are suitable for three-dimensional microscope imaging of the thick sample, such as cells in the biological field and the like, and solve the problems that the positioning accuracy of molecules in the thick sample is low and the sample is difficult to observe.

The invention discloses a rolling and sliding bearing with an outer ring as a sleeve. The rolling and sliding bearing is characterized by consisting of the outer ring, cylindrical rollers, sliding blocks of which the number is the same as that of the cylindrical rollers, and an inner ring of which the outer rims of two ends are provided with fixed flanges, wherein the cylindrical rollers and the sliding blocks are positioned in a sliding chute formed between the outer ring and the inner ring; the number of the cylindrical rollers is equal to the number of the sliding blocks, and the cylindrical rollers and the sliding blocks are separated; the diameters of the cylindrical rollers are greater than or equal to the thicknesses of the sliding blocks in a radial direction of the bearing; the axial lengths of the cylindrical rollers are slightly less than the lengths of the sliding blocks in an axial direction of the bearing; and the cylindrical rollers and the sliding blocks are contacted with each other. The relative movement of the inner ring and the outer ring can be well restrained by the fixed flanges of the inner ring and the outer ring, so that the rolling and sliding bearing with the fixed flanges on the inner and outer rings is higher in axial positioning precision than the rolling and sliding bearing without the fixed flanges; furthermore, as the rolling and sliding bearing is a fixed whole before installation and use, the rolling and sliding bearing with the fixed flanges on the inner and outer rings is more convenient to install and is longer in service life than the rolling and sliding bearing without the fixed flanges during use.

The invention relates to a ceiling-fan motor, comprising a motor upper shell (3), a motor lower shell (6), a motor shaft (1), an upper bearing (2), a lower bearing (7), a motor stator (4) and a motor rotor (5), wherein the motor rotor (5) is arranged outside the motor stator in a matching mode; the center of the motor upper shell (3) is provided with an upper bearing chamber (31); the upper bearing (2) is positioned in the upper bearing chamber (31) and sleeved on the motor shaft (1); the center of the motor lower shell (6) is provided with a lower bearing chamber (61); the lower bearing (7) is arranged in the lower bearing chamber and sleeved on the motor shaft (1); and the motor rotor (5) is arranged in the inner circles of the motor upper shell (3) and the motor lower shell (6). The ceiling-fan motor is characterized by further comprising a wave-shaped spring gasket ring (8) which is arranged in the lower bearing chamber (61) and positioned at the bottom of the lower bearing (7); the upper bearing (2) is in clearance fit with the upper bearing chamber (31); and the lower bearing (7) is in clearance fit with the lower bearing chamber (61). The upper bearing, the lower bearing and the motor rotor are maintained at proper positions; the radial and axial positioning precision of the upper bearing and the lower bearing is improved; the rotary precision is improved; the vibrationis reduced; and the bearing noise caused by resonance is avoided.

The invention provides an asymmetric section steel rail straightening and preheating device which comprises a steel rail preheating device. The steel rail preheating device is mounted at the top of a lifting platform. The lifting platform does translation along X-direction trolley rails. The steel rail preheating device comprises a steel rail preheating tool. The steel rail preheating tool is of an I-shaped structure in bilateral symmetry. Steel rail outline lateral auxiliary positioning devices are detachably mounted on the left side and the right side of the steel rail preheating tool. By means of the asymmetric section steel rail straightening and preheating device, the problem about rapid local preheating of an asymmetric section steel rail is solved, the preheating process progress is accelerated, the preheating operation difficulty is reduced, use is convenient, the number of times of clamping is reduced, the machining efficiency is improved, and the machining quality is guaranteed.

The invention discloses a heavy loading shaft push device for a hole. The device comprises a push shaft which is arranged in an outer shaft; a bearing push plate which is fixed on the inner wall of the outer shaft is radially (axially) arranged on the shaft end of the push shaft; at least two shearing push plates which are radially embedded into a groove of the inner wall of the outer shaft are arranged on the outer side of the bearing push plate, and the shearing push plates are fixedly connected with the bearing push plate through bolts; a left shearing push plate and a right shearing push plate are symmetrically and radially embedded into an annular groove of the corresponding inner wall of the outer shaft; and the bolts are uniformly and circumferentially distributed on the outer sides of the shearing push plates and connect the shearing push plates and the bearing push plate. The heavy loading shaft push device has the characteristics of small design limitation and huge bearing and the like, and is easy to process and assemble and works reliably.

The invention discloses a bearing with an inner ring serving as a sleeve piece. The bearing is characterized by consisting of an outer ring (1), a plurality of cylindrical rollers (2), a retainer (3) and the inner ring (4), wherein the cylindrical rollers (2) are arranged in the retainer (3); the retainer (3) is positioned between the outer ring (1) and the inner ring (4); flanges are fixed through inner edge strips at two ends of the outer ring; and the inner ring consists of a flange-free internal thread ring (5), an open spring washer (6), a left flange external thread ring (7) and a right flange external thread ring (8) so as to form an inner ring, of which flanges are fixed through outer edge strips at two ends of the inner ring. Flanges of the inner and outer rings are fixed flanges, relative movement of the inner ring and the outer ring can be better limited, and the axial positioning accuracy is higher. The bearing is more convenient to mount and has longer service life.

The invention discloses a rotary cutting tool capable of axially and accurately locating. The rotary cutting tool comprises a rotary cutter body, a cutter holder, a cutting blade, a cutter holder fastening part and a cutting blade fastening part, wherein a cutter slot defined by a bottom locating surface, a first side locating surface and a second side locating surface is formed in the rotary cutter body, the cutting blade is fixed on the cutter holder by the cutting blade fastening part, the first side locating surface is a surface at which the cutter slot is opposite to an end cutting edge of the cutting blade, the cutter holder is radically inserted in the cutter slot along the rotary cutter body, the first side locating surface and the bottom locating surface form interference clamping locating to the cutter holder, and the cutter holder and the rotary cutter body are fixedly connected with each other by the cutter holder fastening part. The rotary cutting tool capable of axially and accurately locating has the advantages of high axial anti-shock capability, high locating precision, good safety and long service life.

The invention provides an external linear displacement sensor anti-torsion structure with a rotatable actuator piston rod. The external linear displacement sensor anti-torsion structure comprises an axial positioning pin, a positioning pin bush, a positioning pin anti-falling ring, a support, an axial guide rod and a metal shell. The support is installed on an actuator piston rod through the axial positioning pin, the positioning pin bush and the positioning pin anti-disengaging ring, and the axial guide rod is installed on the support and is in coaxial clearance fit with a guide hole in the metal shell. Wherein the positioning pin bushing is fixedly installed on the actuator piston rod, the support is connected to the positioning pin bushing in a sleeving mode, fixed through the axial positioning pin and used for preventing the support from moving in the axial direction of the actuator piston rod but allowing radial rotation, and the metal shell is fixedly installed on the actuator shell and used for fixing the support to the actuator piston rod. Axial movement of the axial guide rod and the bracket along the actuator piston rod is allowed, but radial rotation is limited.