112results about How to "High reset accuracy" patented technology

The invention discloses a centering tool and a method for determining reference of a non-spherical reflector by using the centering tool. The centering tool comprises a reflector centering tool, wherein the reflector centering tool comprises a mother board and a spindle sleeve; one end of the mother board is fixed on a mechanical rotating shaft, and the other end of the mother board is fixed with the spindle sleeve; the mother board and the spindle sleeve are arranged coaxial to the mechanical rotating shaft; and the spindle sleeve is adaptive to an inner hole of the non-spherical reflector. The technical problems that the reference is changed and the profile of the non-spherical reflector is changed in the conventional method for determining reference of an optical axis of the non-spherical reflector are solved, a reticle reticule of the centering reference tool represents the optical axis of the non-spherical reflector with high precision, the concentricity of the reticule and the optical axis can be about 0.006mm, and the verticality of the reticule and the optical axis can be about 0.005mm.

The invention discloses a long bone resetting robot in series-parallel connection, which comprises a serial connection part and a parallel connection part, wherein the serial connection part comprises a near-end fixing mechanism and a far-end fixing mechanism which are connected or disconnected through a positioning rod; each of the near-end fixing mechanism and the far-end fixing mechanism comprises a fixing plate, a locking bolt, a connecting rod, a connecting rod mounting base, a bracket rod and a latch clamping mechanism; the latch clamping mechanism comprises a connecting bolt and a latch; the parallel connection part comprises a far-end platform panel, a far-end platform connecting plate, a far-end platform pressing plate, a near-end platform panel, a near-end platform connecting plate, a near-end platform pressing plate and a stretching rod mechanism; and the stretching rod mechanism comprises a connecting hinge, a sleeve and a connecting rod. The long bone resetting robot in series-parallel connection is mainly used for realizing a function of assisting the resetting of long bone fracture by the robot under a closed condition. The long bone resetting robot in series-parallel connection has the characteristics of flexible mechanism, large work space, convenience in operation, and the like, and has an excellent application prospect.

The invention discloses a navigation system and method for closed reduction of a fracture. The system comprises a magnetic locator module and a computer software module; the magnetic locator module comprises a magnetic locator sensor, a tracking generator and a probe; the computer software module comprises a three-dimensional reconstruction module, a coordinate unification module and a fracture reduction navigation module. The navigation system and method for the closed reduction of the fracture have the advantages that the spatial position is acquired in real time through magnetic locator, and the frequency of doctors and patients receiving X-ray irradiation is reduced, thereby reducing the damage to the doctors and the patients; spatial data of a broken bone is collected in real time through the magnetic locator, and a three-dimensional fracture model rendered in the computer software module is moved in real time, so that the position of the broken bone can be monitored in real time,and the reduction navigation display is more visual; medical image information, a spatial positioning technology and a three-dimensional visualization technology can be fully combined, so that the reduction precision and efficiency can be improved.

The invention relates to an orthopedics department reset positioning robot, which solves the technical problem that an existing orthopedics department operation robot is low in reset precision during an operation and comprises a reset robot body, a navigation robot and a positioning robot body, the reset robot body comprises a reset platform, a far-end fixator and a far-end reference frame, and the far-end reference frame is fixed to the far-end fixator; the far-end fixator comprises a connecting base plate, a movable connecting plate, a first locking device, a reference frame, a first connecting side plate, a second connecting side plate, a first fixed sleeve, a second fixed sleeve, a fixing plate, a first fixed needle, a second fixed needle, a third fixed sleeve, a fourth fixed sleeve, a third fixed needle and a fourth fixed needle. The invention is widely applied to orthopedic surgery.

An automatic height adjustment valve of an optical vibration isolation platform comprises a lever plate, a hinged support, an ejector pin, an insert bushing, an upper steel bushing, a lower steel bushing, a valve element, a valve body, compressed springs, thin seal rings and the like. According to the automatic height adjustment valve of the optical vibration isolation platform, the structure is simple, the performance is stable and reliable, the reset accuracy is high, the response time is short, and the automatic balancing speed is high; the size is small, and the installation and the adjustment are very convenient. The automatic height adjustment valve of the optical vibration isolation platform can adjust the height of the optical vibration isolation platform automatically and has the advantages of being high in response speed and high in sensitivity.

A cutting device for a fitted angle and un unlimited rotation bevel comprises an electric system and an X-Y-Z mechanical system. The present invention is characterized in that the cutting device also comprises a fitted angle bevel head and a peripheral anti-collision protective bracket of a cutting gun; the electric system comprises a numerical control system, an electric appliance cabinet and a plasma power supply; the X-Y-Z mechanical system is a gantry three-dimensional motion system comprising a workbench, an X shaft, a Y shaft and a Z shaft, and the X shaft, the Y shaft and the Z shaft are all straight line shafts; the fitted angle bevel head is fixedly arranged on the X-Y-Z mechanical system, and the bevel processing is carried out for a steel plate by controlling the cutting gun to make motion along five shafts with the numerical control system; the fitted angle bevel head consists of an A shaft, a fixing frame, a B shaft, a cantilever, a cutting gun, a corner joint plate, a rocker arm and a three-dimensional anti-collision and automatic resetting device of the cutting gun. The fitted angle bevel head adopts a space fitting production mode for bevel angles, having the advantages of high motion speed, good seal properties and simple structure.

The invention discloses a semi-self-locking acetabulum posterior wall and posterior column anatomical plate which comprises a steel plate main body, a self-locking sleeve and self-locking screws, wherein the steel plate main body is sequentially provided with a first fixing region, a first location region, a main fixing region, a second location region and a second fixing region, the main fixing region is provided with self-locking screw holes, the first fixing region and the second fixing region are provided with non-self-locking screw holes, and the first location region and the second location region are provided with location holes. The invention can be properly twisted and bended and is in convenient moulding so as to be better jointed to a skeleton to bear joint motion load, enable the fracture to be normally healed and reduce complications such as loosening, displacement, pains, bone stress shielding and the like at a later stage of fracture. The invention has the advantages ofhaving less internal stress and relatively according with acetabulum anatomy and biomechanics, enhances the success rate of a fracture internal fixation operation, avoids moulding in the operation, saves the operation time, reduces the blood loss in the operation, reduces the anesthetic time and lowers the operation risks.

The invention provides a precision optical machine assembly method of a trapezoidal prism optical system, and solves problems that existing mechanical assembly precision is low, and the high-precisionassembly requirement of a trapezoidal prism optical path cannot be met. The method comprises the following steps: 1) installing a first tool cross wire in a first lens cone, and taking an optical axis of a small circle in the center of the first tool cross wire as a main reference for assembly; 2) adjusting the mounting posture of a second lens cone on a bracket by using an auto-collimation theodolite; 3) moving the auto-collimation theodolite to an emergent light path of a trapezoidal prism, and adjusting the posture of the auto-collimation theodolite; 4) assembling a first front-end lens group into the first lens cone, and assembling a second front-end lens group into the second lens cone; 5) adjusting the translation amount of the trapezoidal prism on the bottom plate and a gasket between the third lens cone and the trapezoidal prism till that an auto-collimation image and the central cross wire image of the third tool cross wire on the third lens cone are aligned with the center of the eyepiece of the auto-collimation theodolite; and 6) assembling a rear-end optical lens group into the third lens cone.

A front cover flexible clamp relates to the field of special clamp equipment used for trial manufacture of vehicle body parts and spare part production in an automobile manufacturing enterprise. The front cover flexible clamp comprises a flexible bottom plate, a connecting module, a supporting and positioning mechanism, an air cylinder compacting mechanism and a coarse positioning mechanism. The front cover flexible clamp is designed by adopting the double-layer bottom plate, an upright post structure is uniformly adjusted in X, Y, Z directions and is rotationally adjusted around a Z axis, and an interface replaced by a clamping head adopts a structure that a square groove is matched with a bolt; the design has the benefit that the upper layer of the bottom plate can quench and is high in hardness; all functional components of a general clamp are covered, and only the clamping head of the clamp for different parts needs to be made; the quick switching of the clamp can be realized, and meanwhile, the positioning precision and the resetting precision are high. The clamping heads of different clamps can be independently disassembled, marked and stored in a centralized manner, so that the site is effectively saved. The process of switching the different clamps is simple and easy to understand; the front cover flexible clamp is particularly suitable for occasions with low requirements for spare part production rate and trial manufacture rate.

The invention relates to a high-precision multi-tooth dividing plate magnification changing mechanism in an optical system, belongs to the technical field of magnification changing mechanisms in optical instruments, and aims to solve the problems of a complicated working mode, low repositioning accuracy and high manufacturing and operating cost of the conventional optical magnification changing system. The magnification changing mechanism comprises a base, a multi-tooth dividing plate, a magnification changing lens group I, an ejector rod, a steel ball, a magnification changing lens group II,a lifting cam, a resetting spring, a lifting motor, a guide pillar, a drive plate, a rotating motor, a rotating platform, a check nut and a roller, wherein the multi-tooth dividing plate consists of a lower multi-tooth dividing plate and an upper multi-tooth dividing plate. The rotating platform and the multi-tooth dividing plate of the magnification changing mechanism rotate together, the magnification changing lens groups move in a plane rotating mode, and the upper multi-tooth dividing plate is precisely meshed with the lower multi-tooth dividing plate after displacement is determined, so that an optical axis is high in resetting precision; and the magnification changing mechanism is convenient to use and low in manufacturing and operating cost.

The invention discloses a minimally invasive surgical instrument based on flexible cable traction series elastic driving and a use method thereof. Existing minimally invasive surgical instruments are poor in flexibility, and hand-eye coordination of doctor operation is poor. A first stepping motor drives a first finger clamp through a first wire wheel and a steel wire rope transmission assembly, a second stepping motor drives a second finger clamp through a second wire wheel and a steel wire rope transmission assembly, and a third stepping motor drives a swing joint through a third wire wheel and a steel wire rope transmission assembly; and a reset push rod is connected with a reset spring fixing block fixed to a motor installation base through a reset spring, and output shafts of the first stepping motor, the second stepping motor and the third stepping motor are manually pushed to reset. According to the invention, three-degree-of-freedom actions of deflection of the swing joint, same-direction swing of the first finger clamp and the second finger clamp and opening and closing can be completed, the one-key reset function is achieved through a mechanical structure, the high reset precision of the swing joint, the first finger clamp and the second finger clamp before an operation is guaranteed, and the high precision requirement during medical use is met.

The invention relates to the technical field of material thermophysical measurement, in particular to a device for testing spectral emissivity of a material in a high-temperature direction. Accordingto the testing device, an electromagnetic induction heating system is used for heating a to-be-tested piece; the temperature is tested in real time through a temperature measuring light path system; the radiation energy is tested through a radiation measuring light path system, and an angle, relative to the to-be-tested piece, of the radiation measuring light path system is adjusted through a rotating part, so that the spectral emissivity of the to-be-tested piece at different temperatures, different angles, and different wave bands can be continuously measured, the structure is also simplified, and the space occupation is reduced.

The invention relates to a bone fracture reduction device for a four limb long bone diaphysis. The problems are solved that during bone fracture reduction, difficulty is high, precision is limited, and an instrument easily declines; in the technical solution scheme, the bone fracture reduction device comprises a hollow supporting rod, a telescopic rod is installed in a cavity of the supporting rod, a cylindrical shell sleeves the right end of the telescopic rod, an annular cavity is formed between the shell and the telescopic rod, a first vertical partitioning plate and a second vertical partitioning plate are installed in the cavity, the two partitioning plates divide the cavity into a front semicircular part and a rear semicircular part which are separately closed, an air channel capableof being switched and communicated with the two parts of the cavity is formed in the telescopic rod, the telescopic rod moves rightwards by a certain distance to start the air channel, an air inlet hole communicated with the internal cavity of the supporting rod is formed in the side wall of the supporting rod, and traction bows are installed at the left end of the supporting rod and on the outerwall of the shell respectively. Through pre-adjustment, the device greatly lowers the difficulty of bone fracture reduction in an operation, improves reduction precision, and has no declining torque.

The invention discloses a vertebral slippage lifting device which comprises a positioning mechanism and a lifting mechanism. The positioning mechanism comprises a positioning plate, a positioning pin and a positioning sleeve, the positioning plate is provided with a first through hole matched with the positioning pin, and one end of the positioning sleeve is vertically and detachably fixed to the positioning plate; the lifting mechanism comprises a lifting hook, the lifting hook comprises a hook-shaped portion and a rod portion, the rod portion of the lifting hook is arranged in the positioning sleeve, and a second through hole used for allowing the rod portion of the lifting hook to penetrate through is formed in the portion, connected with the positioning sleeve, of the positioning plate. The vertebral slippage lifting device is convenient to operate and high in reduction precision and causes few operation wounds.

The invention belongs to the field of pressure reducer products for spaceflights and particularly relates to a high-resistance non-metal membrane type pressure reducer. According to the high-resistance non-metal membrane type pressure reducer, automatic centering between a valve seat and a valve steel ball can be achieved, so the sealing performance of the structure is fully guaranteed; meanwhile, the pressure reducer can be assembled on a valve body as an independent component, so the relative position requirements of matching between the valve seat and the valve steel ball can be guaranteed beneficially, and reset accuracy of a product is improved; the machining accuracy requirements of the valve body are reduced; a kinematic pair is connected with a non-metal membrane and a pressure-bearing disc, and only plays a role of a push rod in the working process and transmits force to push the valve steel ball away from the valve seat; the kinematic pair and the valve steel ball are guided respectively, so the pressure reducer is good in technological performance, flexible to move, small in friction, high in valve element resetting accuracy and beneficial to improvement of valve port airtightness and dynamic performance.

The invention discloses a sample chamber of a sample analysis device. The sample chamber comprises an optical installation assembly and a sample chamber cavity wall, wherein a connecting piece is arranged between the optical installation assembly and the sample chamber cavity wall, one installation flange is arranged on the sample chamber cavity wall at least, the connecting piece is connected with the sample chamber cavity wall by the installation flange and is provided with a first location element, a second location element is arranged on the installation flange or the optical installation assembly, and the first location element and the second location element are matched with each other during installation to improve the installation and resetting precision of an optical element. According to the invention, the technical difficulties that an optical path needs to be regulated again after being maintained in a detached state and dead angles of maintenance are generated during maintenance through a window in the prior art are overcome, and the purpose of maintaining the optical element thoroughly and rapidly is fulfilled.

The invention discloses a miniature multi-spectral optical axis calibrator which comprises a splitting mirror assembly, an objective lens assembly, a swivel arm seat assembly, an insertion rod assembly, a fixation seat assembly, a power supply assembly and a rotating shaft. The splitting mirror assembly sleeves one end of the rotating shaft and is locked by a locking nut III. A wire jacket I is fixed on the locking nut III. A wire sleeve which is pressed by a wire jacket press ring is arranged on the wire jacket I. The objective lens assembly sleeves the other end of the rotating shaft. The swivel arm seat assembly is rotatably arranged on the rotating shaft and is located between the splitting mirror assembly and the objective lens assembly. The swivel arm seat assembly is provided with a steel ball on one end close to the splitting mirror assembly. A retaining ring I which presses the steel ball is arranged on the rotating shaft in a threaded manner. The retaining ring I is locked by a locking nut I. The insertion rod assembly is inserted into the swivel arm seat assembly and is rotatably engaged with the swivel arm seat assembly through the steel ball. The fixation seat assembly is arranged on the insertion rod assembly. One end of the power supply assembly is inserted into the insertion rod assembly. The other end is connected with the rotating shaft. The miniature multi-spectral optical axis calibrator provided by the invention has the advantages of high calibration accuracy, large coverage caliber, no color difference and the like.

The invention belongs to the technical field of medical instruments, and discloses a vertical telescopic tibial plateau collapse fracture block minimally invasive reduction device which comprises an outer sleeve, and the outer sleeve comprises a first sleeve and a second sleeve which are connected; a rotating rod is arranged in the first sleeve, is sleeved with a driving bevel gear, and is rotationally connected with the inner wall of the first sleeve through a first bearing; a lifting rod is arranged in the second sleeve, the outer wall of the lifting rod is matched with the inner wall of the driven bevel gear through threads, an anti-rotation groove is formed in the lifting rod in the axial direction, a stop rod is arranged on the inner wall of the second sleeve, and the stop rod extends into the anti-rotation groove, so that the rotating motion of the driven bevel gear can be converted into the axial motion of the lifting rod; the lifting rod is vertically connected with the reset platform. A set of bevel gears is utilized, the rotating rod is rotated, the reduction platform gradually and vertically abuts against the collapsed bone block, an operator can easily and manually control the reduction abutting force and the reduction height, the bone block overturning risk is avoided, and the fracture reduction operation quality and efficiency are improved.