98results about How to "Eliminate assembly errors" patented technology

The invention provides a high-precision combined calibration and butt-joint method and a high-precision combined calibration and butt-joint mechanism for an infrared imaging system, which are mainly used for solving the problem that the verticality precision of the optical axis of an optical imaging system and an imaging focus plane, the verticality accuracy of the optical axis of the optical imaging system and the central normal of the target surface of an imaging focal plane and the verticality accuracy of the image plane of the optical imaging system and an imaging focal plane cannot be ensured in the conventional image plane but-joint process. According to the method and the mechanism, a high-precision dual-shaft lathe is used for clamping at one time, and meanwhile turning machining of the butt-joint reference surface of a focusing plane assembly and the flange mounting end face of an optical lens is realized after a given adjusting target is achieved and the adjusting precision is reached, so that the parallelism of two planes is ensured, and assembling errors caused by earlier assembling loops of the focal plane assembly and optical lens are fully eliminated.

The invention relates to an interlocking device of a draw-out circuit breaker, and belongs to the field of electrical techniques. The draw-out circuit breaker comprises a circuit breaker body and a socket. The circuit breaker body comprises an operating mechanism with a trip lever and a transmission rod. The interlocking device comprises a base, a rotating pushrod, a rotating pushrod actuating device and a rotating pushrod return spring, wherein the rotating pushrod is arranged on the base, and one end of the rotating pushrod which faces to the operating mechanism stretches out of the base, extends into the circuit breaker body and corresponds to the transmission rod; and the rotating pushrod actuating device is assembled on the base, one side of the rotating pushrod actuating device corresponding to the rotating pushrod is in contact with the rotating pushrod, and the part of the rotating pushrod actuating device which faces to the socket stretches out of the base and corresponds to the socket; and one end of the rotating pushrod return spring is born on the rotating pushrod and the other end of the rotating pushrod return spring is born on the base. The interlocking device of the draw-out circuit breaker has the advantages that the assembling errors caused by separate installation are eliminated and the action reliability is ensured; the invasion of dust and foreign matters is avoided; the interlocking device is universally suitable for draw-out circuit breakers at different current ratings; and since the overall structure is simple, the manufacturing, installation and maintenance are facilitated.

The invention relates to an actuator for selecting and exchanging gear of automatic transmission, comprising body, selector equipment, gear shift, control valve block. Selector oil cylinder of said selector equipment is assigned with exchanging oil cylinder of said gear shift in orthogonality. It is characterized in that said selector equipment, gear shift and control valve block is formed into a total part and is collected on said body, the equipment is connected with clutch mechanism and power resource by system oil pipe. The invention is provided with compact structure, good integrity, easily manufacturing, low cost and high stability. The actuator for selecting and exchanging gear is added on the mechanical transmission and there is almost no any change for mechanical transmission. The high transmission efficiency of mechanical transmission is maintained. The invention is commonly used to mechanical speed-changing box with different structure, especially the mechanical speed-changing box of automobile.

The invention relates to the field of precision machinery and aerospace optical technology, and in particular discloses a floating support device for on-ground gravity unloading of aerospace optical load, comprising an unloading base, and multiple sets of gravity unloading devices arranged on the unloading base. The gravity unloading devices are fixedly arranged under the optical load. The floating support device also comprises multiple sets of fixed support devices arranged on the back of the optical load. Gravity unloading in the direction of the gravity vector can be achieved by the gravityunloading devices, thereby offsetting the maximum deformation introduced by the gravity of the large optomechanical structure, and significantly alleviating the effect brought by the inconsistency ofsky-earth mechanics on the accuracy of on-ground installation and alignment as well as the quality of on-orbit imaging of aerospace optical loading. Therefore, the invention provides basic image quality for on-ground pre-installation and alignment as well as active optical correction for high-sensitivity optical components. In addition, through on-ground gravity unloading, the unnecessary designof the large aperture optical load optomechanical structure and the launching cost can be greatly reduced, and the use efficiency of the aerospace vehicle can be improved.

A pin roller linear guide rail comprises a guide rail, wherein a sliding block is arranged on the outer side of the upper end of the guide rail, the sliding block comprises a sliding block body, and amounting groove is formed in the center of the lower end of the sliding block body; two upper circulating channels and two lower circulating channels are respectively arranged on the left side and the right side of the mounting groove; circulating devices are arranged on the left side and the right side of the sliding block body; the left end circulating device comprises backflow pipes arranged on the inner side of the circulating channels; clamping plates are arranged at the front ends and the rear ends of backflow pipes; an upper support is connected to the right sides of the upper ends ofeach of the front clamping plate and rear clamping plate; a middle support is connected to the right sides of the middle ends of each of front clamping plate and rear clamping plate; a lower support is connected to the right sides of the lower ends of each of front clamping plate and rear clamping plate; the front ends of the second circulating channel and the third circulating channel are connected through a first circulating part; the front ends of the first circulating channel and the fourth circulating channel are clamped with a second circulating part; the rear ends of the first circulating channel and the fourth circulating channel are clamped with a third circulating part, the rear ends of the second circulating channel and the third circulating channel are clamped with a fourth circulating part; and the front and rear ends of the sliding block body are provided with sealing covers corresponding to the sliding block body, and the outer sides of the front sealing cover and the rear sealing cover are fixedly connected with end covers.

The invention discloses a macro-micro integrated motion high-precision parallel mechanism device and a control method. The macro-micro integrated motion high-precision parallel mechanism device comprises a mechanical body part and a control part. The mechanical body part comprises a fixed platform, a moving platform, linear motor drive branched chains for driving macro motion of the moving platform and micro motion branched chains for driving precise micro motion of the moving platform. The control part comprises a linear motor servo amplifier, a linear precise drive unit servo amplifier, a motion control card and a computer. Linear motor macro motion guarantees the trajectory tracking and motion range, high-precision locating control is achieved through micro motion driven by linear precise drive units, the contradiction of the large stroke and the high precision is solved through macro motion and micro motion integration, and high-precision locating control is achieved in large work space.

The present invention provides a frequency governing mechanism for cavum filter, which comprises of cavum body, inner and outer medium and connecting rod moved by gearing. The outer medium is placed in cavum body, the connecting rod is placed in outer medium, and the inner medium is mounted on connecting rod. Wherein, a stretch device capable of making connecting rod, inner medium axes and cavum body or/and outer medium concentric automatically is set on the connecting rod. The stretch device can be set in corresponding groove of cavum body, cover board or gearing, which comprises of at leasttwo elastic members symmetric to center of vacuum, the front end of each member has stretch working surface matched to connecting rod, the rear end is arc surface capable of swing automatically alonginner wall of groove and stretched touch with inner wall of groove. A pair of elastic double nuts space adjusting member is set on the lead screw. The present invention can eliminate assembly error, ensure the motor lead screw, connecting rod, vacuum body, inner or outer medium and cover board is concentric, improve the rigidity of connecting rod.

The invention discloses a processing method of an input shaft of an integral high-precision hollow speed reducer. The processing method includes the steps of forging a blank of the input shaft, processing an inner bore of the blank of the input shaft, processing a first positioning plane and a second positioning plane of the blank of the input shaft, processing a positioning pin hole in the blankof the input shaft, clamping and assembling the blank of the input shaft by one step, and finishing a first outer race, a second outer race and a third outer race of the input shaft respectively. Without weakening various functions of the speed reducer, the processing method, aiming to improve service life of the input shaft, reduces error accumulation during assembling by reducing number of parts, eliminates three bearing stations of the conventional input shaft, processes the inner races of bearings onto the input shaft directly to eliminate assembly error between the bearings and the bearing stations, and accordingly improves precision.

The invention belongs to the field of wind tunnel experiments and discloses a hard-sealing fast ball valve. The hard-sealing fast ball valve structurally comprises a valve body, a left valve deck, a right valve deck, a ball core, a left valve seat, a right valve seat, a valve rod, an upper supporting plate, a lower supporting plate, a left loading spring, a right loading spring, a left pressing ring, a right pressing ring, an upper sliding bearing, a lower sliding bearing, a valve rod sliding bearing and an upper sealing structure. Hardened layers are sprayed onto the ball core, the left valve seat and the right valve seat. The ball core, the valve rod and a valve seat base body are made of precipitation-hardening stainless steel. The integral upper sealing structure and a valve rod anti-blowing-out safety structure are adopted by the valve. According to the hard-sealing fast ball valve, the supporting plates and a fixed ball structure are adopted, and assembling errors are eliminated to the greatest extent; the ball core, the valve rod, a left valve seat base body and a right valve seat base body are made of the precipitation-hardening stainless steel, and meanwhile the hardened layers are sprayed onto the ball core, the left valve seat and the right valve seat so that high pressure difference and strong impact caused by large flow can be borne; the valve rod and the ball core are connected in a square mode, so that the load at the end of the valve rod is more uniform.

The invention relates to laser wafer cutting equipment which comprises a marble platform, an air floating platform, an X-axis movement mechanism, a Y-axis movement mechanism, a Z-axis linear motor, a support, a sliding table, a laser, a mounting plate, a 45-degree mirror light path assembly, a light splitting system, a 45-degree mirror light path assembly, a cutting head and a cutting head support. The marble platform comprises a first-stage platform and a second-stage platform arranged on the first-stage platform. According to the invention, the linear motors are mounted in the X-axis direction, the Y-axis direction and the Z-axis direction, so that operation can be guaranteed to be carried out at the micrometer precision. The support is mounted on the second-stage platform of the marble platform; the sliding table is mounted on the support; fine adjustment in the x direction can be implemented through the sliding table so as to ensure that a light path is accurate. The second-stage platform is integrally machined, and the overall rigidity is good, so that light path deviation caused by support deformation is avoided, and the situation that the light path is difficult to adjust due to flatness errors is avoided. up-and-down movement can be carried out in the Z-axis direction to adjust and position, thereby eliminating assembly errors in the optical path height.

The invention discloses a COB camera module and a packaging method thereof. The voice coil motor comprises a circuit board, a chip attached to the circuit board, a light filtering assembly attached tothe chip, a motor and a lens locked inside the motor, the motor is glued to the light filtering assembly, the locking height of the lens on the motor is h1, and the distance between the voice coil motor and the light filtering assembly is h2. The camera module is packaged by adopting two specific sizes of h1 and h2, and is matched with compensation type optical axis correction, so that the automatic focusing accuracy of the camera module and the optical axis overlap ratio between modules can be improved to the greatest extent. The automatic focusing accuracy of the COB camera module is improved by adopting two specific sizes of h1 and h2; defective products are accurately discriminated through compensation type optical axis correction, and meanwhile, the fault tolerance of optical axis correction is improved, so that the yield is improved; grading of the COB camera module can be completed in the packaging process through primary optical axis correction and compensation type secondarycorrection of the camera active focusing equipment.

The invention relates to a planetary reduction motor capable of realizing full closed-loop control and an articulated robot using the reduction motor. According to the invention, the assembly accuracyis high, and high-precision full closed-loop control is realized. The main structure of the motor includes a planetary reducer part, a motor part and a full closed-loop control device. The full closed-loop control device includes a drive shaft and a grating encoder. The grating encoder is located outside the motor casing body and is arranged on the rear end surface of the motor casing body. A rotor and the sun gear of a first-stage planetary reduction mechanism in the planetary reducer are fixedly connected through interference fit. The front end of the motor casing body and the reducer casing body are directly fixed by screws. In each stage of the planetary reduction mechanism, at least two planetary holes in a planet carrier have a circumferential offset relative to the positions of planet wheels distributed in the circumferential direction, which is used to reduce backlash.

The invention relates to a spectrograph-based optical displacement sensor signal demodulation method. According the scheme, a data processing process of a wavelength encoding type optical displacement sensor comprises (1) reading spectroscopic data of output diffraction light of the sensor through a spectrograph; (2) processing the data through a full width at half maximum peak searching algorithm to obtain central wavelength; (3) performing comprehensive regression interpolation on the central wavelength to obtain displacement information. The spectrograph-based optical displacement sensor signal demodulation method has the advantages of being rapid, not needing a gate code calculation process and shortening data processing time; being accurate, avoiding gate code equation fitting errors and improving the calculation accuracy; being independent, not being influenced by optical grating diffraction angle errors and eliminating machining and assembling errors due to the facts that a former process of obtaining the grate code through a diffraction formula is eliminated and the displacement is directly obtained through the central wavelength.

The invention provides an oil suction pipe part, comprising a pipeline flange, an oil suction bent pipe, a fixing frame and an oil suction cover. The front end of the oil suction bent pipe and the oilsuction cover are solidified, the tail end of the oil suction bent pipe and the pipeline flange are solidified, and the fixing frame is arranged at the tail end of the oil suction bent pipe; and theoil suction cover comprises an arc-shaped upper cover, an arc-shaped lower cover and an arc-shaped filter net, the arc-shaped upper cover and the front end of the oil suction bent pipe communicate andare solidified, the arc-shaped upper cover and the arc-shaped lower cover are in clamping fit and solidified, the arc-shaped filter net is arranged between the arc-shaped upper cover and the arc-shaped lower cover, and an oil suction opening is further formed in the arc-shaped lower cover. According to the oil suction pipe part provided by the invention, an assembly-type oil suction pipe part isadopted as the fixing frame so that the assembly error within a certain range can be eliminated, assembly stress is reduced, reliability is improved, and a breakage failure caused by long-term usage is avoided.