429results about How to "Improve coaxiality" patented technology

The utility model discloses a compact and stable type automatic plate edge banding machine, which relates to the technical field of plate edge banding, and comprises a rack, a chain plate conveying belt, a guide pressing plate assembly, a pre-milling assembly, a gluing assembly, a plate joint strip assembly, a flush assembly, a fine trimming assembly, a scraper assembly and a polishing wheel. The compact and stable plate edge sealing equipment is formed, the independent and integrated gluing assembly and the integrated cavity are adopted, the coaxiality is good, the gluing uniformity cannot be affected, the front end and the tail end of a plate joint strip are cut off in a tracking mode, the cutter thrust is small, the stability is good, the upper portion and the lower portion of the plate joint strip are simultaneously refined, resonance influences are mutually reduced in an abutting mode, vibration is reduced, and the edge trimming precision is high; the fine adjustment spring is arranged, so that the distance between the fine trimming mechanism and the scraper mechanism can be finely adjusted, stable pressure is formed between the fine trimming mechanism and the scraper mechanism and the plate joint strip, the distance between the plate joint strip and a fine trimming cutter or a scraper is conveniently controlled, and fine trimming or scraping is more stable and better in effect.

The invention relates to an oil sprayer body and a machining method for a stepped deep hole and a spherical bottom face of the oil sprayer body. The machining method comprises the following steps: pre-drilling: fixing the oil sprayer body on a machining center, and drilling a blind hole by adopting a drill bit; pre-boring: boring a blind hole; drilling a deep hole: taking the blind hole as a guide, adopting a gun drill to enter a second preset depth, starting inner cooling, increasing the rotating speed and the feeding amount of the gun drill, drilling to a third preset depth, retracting the tool, closing the inner cooling, and withdrawing the gun drill; forming counter bores: processing spherical bottom surfaces at the bottoms of the blind holes by adopting a spherical counter bit by taking the blind holes as guidance; hole expanding and boring are conducted on the hole, and the depth is made to be the fifth preset depth; and chambering: chambering with a gun drill by taking the hole as a guide to obtain the fuel injector body. The invention further provides the oil sprayer body obtained through the machining method. The machining center solves the problems that when an existing machining center is used for machining a stepped deep hole and a spherical bottom face of an oil injector body, the coaxiality is poor, and the roughness cannot meet the product requirement.

The utility model belongs to the technical field of pipe expanding tools, and particularly relates to an electric pipe expander main machine which comprises a pipe expanding device. The driving device is mounted on the pipe expanding device and used for driving the pipe expanding device to work; the pipe expanding device comprises a machine base, a pipe expanding device and a pipe expanding device, the transmission mechanism is rotationally arranged in the machine base, the rear end of the transmission mechanism extends into the box shell, and the transmission mechanism is connected with the driving device; the eccentric mechanism is installed in the machine base, and the rear end of the eccentric mechanism is arranged in the transmission mechanism; the rear end of the thread feeding mechanism is provided with a thread box shell, and the front end is connected with the eccentric mechanism; the eccentric mechanism at least comprises: an eccentric seat, the rear end of which protrudes to form a guide part, and the guide part is internally provided with a guide hole; the buffer assembly of the thread feeding mechanism is installed on the guide part, the front end of the screw of the thread feeding mechanism is inserted into the guide hole and connected with the buffer assembly through the pin shaft, the screw extends into the guide hole and is restrained by the guide hole, the coaxiality of the screw and the eccentric seat is high, the durability of the pipe expander is improved, and the service life of the pipe expander is prolonged.

The invention belongs to the field of satellite-borne scanning mechanism design, and relates to an integrally-designed satellite-borne complex variable-speed scanning and torque compensation mechanism, which is used for realizing compensation of disturbance torque generated by a complex variable-speed scanning mechanism and comprises a variable-speed scanning mechanism and a torque compensation mechanism which share one set of shell and are coaxially designed, the variable-speed scanning mechanism comprises a first hollow cylinder and a third hollow cylinder; a first position sensor rotor, a first position sensor stator and a first position sensor are arranged on the second inner wall of the first hollow cylinder; the torque compensation mechanism comprises a second hollow cylinder, a flywheel and a fourth hollow cylinder, the flywheel is of a concentric double-cylinder structure, the outer cylinder diameter of the flywheel is larger than the outer diameter of the second hollow cylinder, and the inner cylinder diameter of the flywheel is smaller than the inner diameter of the second hollow cylinder. And a second position sensor rotor, a second position sensor stator and a second position sensor are arranged on the first inner wall of the second hollow cylinder.

The invention discloses a motor stator and rotor assembling device which comprises a workbench, a support is installed on the workbench, and a clamping and fixing assembly used for clamping and positioning a motor stator assembly is installed on the support. Two conveying rails arranged side by side are arranged on the table top of the workbench, the two conveying rails support the edge of the end of a gearbox shell of a motor rotor assembly and convey the motor rotor assembly to the position under a motor stator assembly, a motor rotor is located above the two conveying rails, and the output end of the motor rotor is located between the two conveying rails. A first limiting assembly matched with the bottom end face of the output end of the motor rotor for limiting and a second limiting assembly matched with the side face of the output end of the motor rotor for limiting are arranged on the table top of the workbench. The linear movement driving assembly is connected with the clamping and fixing assembly. The rotor shaft is fixed on a single side, the stator and the rotor are assembled simply, efficiently and accurately, and the rotor shaft assembling device can adapt to rotor shafts and shells with different assembling modes and different shapes and sizes.

The utility model discloses a novel motor casing boring cutter which comprises a connecting handle connected with a cutter body. At least two adjusting tool holders are arranged on the tool body and are locked and fixed through tool holder locking screws; a cutter holder adjusting knob is arranged on the adjusting cutter holder; each adjusting cutter holder is provided with a blade containing groove and provided with a blade. Compared with the prior art, the two-section type inner hole machining device has the advantages that the effect that two-section type inner hole machining is completed at a time is achieved, and therefore precision consistency is guaranteed; 2, the machining diameter can be flexibly set, the size of the tool holder can be adjusted according to different workpiece sizes, one-time forming is achieved, meanwhile, different blade materials can be replaced according to different machined products, and the machining requirement is met. And 3, the novel cutter can be used for machining a plurality of sizes at one time, and the coaxiality between steps is high. And 4, the connecting handles are detachably connected, so that different connecting handles can be replaced according to different machine tools.

The invention discloses an ultrathin electronic glass roller way speed measurement support and a speed measurement method, and the support comprises a support which is connected to a mounting disc for fixing a supporting roller through a bolt, the support is fixedly provided with an encoder, a detection shaft of the encoder is connected with a connecting disc through a coupler, the connecting disc is clamped at the end part of the supporting roller, and a signal of the coupler is connected with a speedometer. And a driving control system and an alarm of the supporting roller are connected through a linear speed meter. The effect of improving the roller way rotating speed detection precision and frequency is achieved.

The clothes dryer comprises a shell, a stator assembly and a rotor assembly are arranged in each of two cavities of the shell, the shell comprises an integrated middle shell, an end cover A and an end cover B are fixed to the two ends of the middle shell respectively, and the outer diameter of the stator assembly A is smaller than that of the stator assembly B; a rotor assembly A is arranged on the inner side of the stator assembly A; two ends of a rotating shaft of the rotor assembly A are rotationally connected with the middle shell and the end cover A respectively; the rotor assembly B is arranged on the inner side of the stator assembly B. The two ends of a rotating shaft of the rotor assembly B are rotationally connected with the middle shell and the end cover B. The rotor assembly A and the rotor assembly B are coaxially arranged. And the at least one stator assembly is embedded in the middle shell through an insert molding process. According to the invention, one group or two groups of stator assemblies are directly pre-embedded in the integrated middle shell through insert molding, so that the stator assembly process is reduced, the production efficiency is improved, the coaxiality of the two rotor assemblies is better, the vibration during operation can be reduced, and the noise is reduced.

The utility model discloses a pipe seam type anchor rod drawing force testing device, which is characterized in that a gasket sleeved on a pipe seam type anchor rod and clamped with an anchor rod baffle ring is of a two-section structure, the two sections are combined to form a cylinder body with a gasket flange at the end part, and the outer side of the cylinder body is bound and fixed through an iron wire. And the inner end of the small sleeve is provided with a clamping ring for clamping the flange of the gasket from the inner side. The outer end of the small sleeve is fixedly connected with a small sleeve rod body. The inner end of the large sleeve is open, and the outer end of the large sleeve is provided with an end plate with a center hole. The small sleeve rod body penetrates through the center hole outwards, and the outer end of the small sleeve rod body is connected with a nut used for tightly jacking the hollow jack towards the inner side. The gasket not only has the characteristic of being convenient to assemble, but also can adapt to rod bodies with different thicknesses and is tightly matched with the anchor rod. By utilizing the device, the anchor rods with different sizes can be subjected to drawing test, and the coaxiality adjustment difficulty of related parts of the device is reduced.

The invention discloses a Tc32 titanium alloy cake blank forge piece forming device. The Tc32 titanium alloy cake blank forge piece forming device comprises an upper die body and a lower die body which are matched with each other; working cavity parts of which the sections are one third of a circle are arranged at the corresponding positions of the working surfaces of the upper die body and the lower die body; parameters of the two working cavity parts are consistent. The invention further discloses a forming method of the Tc32 titanium alloy cake blank forge piece. The forming method comprises the following steps that adaptive forging equipment is selected; two sets of matched flat hammer anvil molds are arranged; one set of flat hammer anvil mold is manufactured into a required swage block; the bar is subjected to multi-heating-number heating flat hammer anvil forging and then subjected to one-heating-number heating swage anvil forging; sand blasting and polishing are carried out; and performing heat treatment. According to the Tc32 titanium alloy cake blank forge piece forming device, forming production of the forge piece is completed, it is ensured that the final internal structure of the forge piece meets the requirement while the forge piece forming time is shortened, the coaxiality and ovality of the forge piece can be effectively improved, and therefore it is ensured that the boundary dimension of the forge piece meets the requirement of a drawing.

The invention relates to the technical field of flight equipment part machining, and discloses a machining process of a high-precision titanium alloy supporting arm of flight equipment and the high-precision titanium alloy supporting arm. (2) if the verification is passed, the incoming materials are preliminarily processed, a main body structure is obtained, the main body structure comprises a plurality of sets of lug structures, and each set of lug structure comprises a plurality of lugs; (3) the main body structure serves as a fixed datum, rough punching operation is conducted on each lug piece structure through a first cutter, and rough machining holes are obtained; 4) performing accurate positioning operation on the main body structure based on the rough machining hole by taking the rough machining hole as an accurate positioning reference; the method comprises the steps of (1) carrying out first precise punching operation on each lug through a first cutter to obtain a first precise punching hole, (2) carrying out second precise punching operation on each lug after first punching through a third cutter to obtain a high-precision hole, and ensuring the stability, the coaxiality and the machining precision requirements, and the ratio of the overall height of the multiple sets of lug structures to the diameter of the high-precision hole is larger than 10.

The utility model relates to an inner-row type trepanning cutter for deep holes, belongs to the field of deep hole machining, and solves the problems that an existing trepanning cutter is poor in machining linearity, severe in cutter abrasion, poor in machining surface smoothness and low in machining efficiency. The inner row type trepanning cutter for the deep holes comprises a circular-tube-shaped cutter crown, and the cutter crown comprises a cutter body mounting part; the four cutter body mounting parts are uniformly arranged on the cutter crown along the circumferential direction; and the outer wall of each cutter body mounting part is provided with an alloy guide key and a shock absorption damping block which are different in circumferential position and staggered in axial position. The trepanning cutter provided by the utility model has better machining linearity and coaxiality, higher machining precision and efficiency, capability of effectively ensuring the smoothness of an inner hole, and longer service life.

The invention discloses an ultrasonic vibration cutting tool, and belongs to the technical field of ultrasonic vibration machining. The cutter assembly comprises a first clamping flange, a second clamping flange, a cutter and an ultrasonic vibrator, and the two clamping flanges and the cutter are fixedly connected and form an ultrasonic vibrator mounting part for accommodating the ultrasonic vibrator; a conducting layer and an insulating layer are arranged between the ultrasonic vibrator and the two clamping flanges, after the cutter is tightly fixed on the cutter holder by the fixing nut, the cutter is matched with the conducting layer to form an ultrasonic vibrator grounding end circuit, and the other side of the ultrasonic vibrator abuts against the power supply ejector pin; a cylindrical mounting part is arranged on the first clamping flange and provided with a conical matching hole matched with the conical mounting part of the tool apron, a plurality of Z-shaped elastic connecting sets are formed between the cylindrical mounting part and the conical matching hole, the design of through holes in special shapes has obvious buffering and vibration isolation effects, and the tool is divided into a mounting part and a vibration part during working. During assembly, the fixing nut is only in contact with the mounting part, so that the inhibition effect of mounting factors on the amplitude of the ultrasonic cutting knife is greatly weakened, and the cutting efficiency and quality are improved.

The utility model provides a laser brazing tool for synchronously rotating two sides of a round pipe joint. The laser brazing tool comprises a rack, a rotating device, a positioning and supporting device, a brazing lifting device and a polishing device. The rotating device achieves coaxial installation and synchronous rotation of the two round pipes through a left three-jaw chuck and a right three-jaw chuck which are in bilateral symmetry and is driven by a permanent magnet synchronous motor controlled by a PLC. The positioning and supporting device adapts to circular pipes with different diameters through a positioning roller and a roller position adjusting mechanism. The brazing lifting device comprises an annular air injection piece, a high-power laser generator and a brazing wire and provides inert gas protection and laser brazing functions. The grinding device comprises a low-power laser generator and a flexible grinding block which are used for preheating and grinding the surface of the round pipe correspondingly. In addition, the rack is provided with a welding waste liquid collecting table, and the environmental protection property is improved. The tool can achieve automatic welding of the round pipe, improves the welding precision and quality, and is high in adaptability, simple in structure and low in manufacturing cost.

The invention discloses follow-up welding forming clamping equipment for inner and outer circumferential welds of a cylinder, and belongs to the field of welding equipment. The welding forming clamping equipment comprises a base, a lower pressing mechanism, an upper pressing mechanism, a lifting driving mechanism, a turn-over driving mechanism, a turn-over seat, a rotary driving mechanism and a clamping positioning mechanism. The holding and clamping positioning mechanism is used for supporting the thin-wall barrel, and self-deformation of the barrel is avoided; the upper pressing mechanism and the lower pressing mechanism are matched to clamp and fix all the to-be-welded products, the positioning precision and the clamping stability of the parts are guaranteed through the ring body abutting rolling wheels, and circular seam welding deformation can be reduced easily; besides, the upper and lower pressing mechanisms are used for driving the cylinder part to perform rotary welding, the turn-over mechanism is used for driving the cylinder part to perform turn-over welding, one-time welding forming of inner and outer welding seams at the two ends of the cylinder part can be achieved through one-time clamping, the welding production efficiency is improved, the welding precision is greatly improved, and the welding reject ratio is effectively reduced; and the economic benefits of enterprises are improved.

The utility model discloses a multi-pressure-source linkage device for assembling a spring rod type handle, which comprises a base, a guide post arranged on the base, a first positioning seat arranged between the base and the guide post, a second positioning seat and a third positioning seat which are arranged on the guide post in a sliding manner, and a plurality of hanging rings arranged on the side surface of the base, a main shaft mounting seat is arranged on the first positioning seat, a first limiting hole is formed in the second positioning seat, a second limiting hole is formed in the third positioning seat, a height limiting mechanism and a reset mechanism are arranged between the base and the second positioning seat, a first driver is arranged between the base and the third positioning seat, and a snap spring pressing mechanism is arranged on the third positioning seat; and the second positioning seat moves and presses the first positioning seat along the guide post in a synchronous linkage manner under the pressure of the third positioning seat. The assembling accuracy of the handle is guaranteed, and the problem of potential safety hazards caused by manual tool assembling is avoided.

The utility model relates to the technical field of medical equipment, and discloses a lens assembling tool device which can enable a lens and an assembling component to be kept coaxial, then the assembling component is used for assembling the lens, the force application angle of the assembling component on the lens is not changed all the time, and therefore the lens assembling tool device can be used for assembling the lens. The main light angles of the assembled lens group can be consistent, the coaxiality is good, and the detection precision and the imaging quality of subsequent detection equipment are ensured. The lens assembling tool device comprises a frame body, at least one fixing seat, at least one group of assembling components and a coaxiality adjusting mechanism, the fixing seat is arranged on the lower portion of the frame body, a lens is arranged on the fixing seat, the assembling components are arranged on the upper portion of the frame body, each group of assembling components corresponds to one fixing seat in position, the assembling components are used for assembling the lens, and the coaxiality adjusting mechanism is used for adjusting the coaxiality of the lens. The coaxiality adjusting mechanism is arranged on the frame body, and the coaxiality adjusting mechanism is used for adjusting the coaxiality between the lens arranged on the fixing seat and the assembling component.

The invention discloses a supporting structure for reducing the degree of freedom of an electromechanical transmission output shaft and an output gear, which belongs to the technical field of mechanical design and comprises a cylindrical pin, the output shaft, a flange plate, the output gear and a bearing. The flange plate is mounted on the box body; the flange plate is supported on the output gear through a bearing; one end of the output shaft is coaxially sleeved in an axial blind hole A in the output gear; the output gear and the output shaft are coaxially connected through a cylindrical pin; one end of the cylindrical pin is in transition fit with an axial blind hole B in the output gear, and the other end of the cylindrical pin is in transition fit with an axial blind hole C in the output shaft. According to the invention, the cylindrical pin is utilized to restrain the redundant degrees of freedom of the output gear and the output shaft in the axial direction and the radial direction, and the coaxiality between the output shaft and the output gear is improved, so that the assembly error is reduced, the dynamic load is reduced, and the overall performance and reliability of an electromechanical transmission system are improved.

The utility model belongs to the technical field of flow control devices, and provides a laminar flow element and a mass flow controller, the laminar flow element comprises a sleeve, the sleeve comprises a first section and a second section which are arranged along a first direction, and the inner surface of the second section is provided with an internal thread; the plunger is arranged in the sleeve; the plunger comprises a third section and a fourth section which are arranged in the first direction, an annular laminar flow gap is defined by the third section and the first section, and the area of the cross section of the laminar flow gap is gradually decreased in the direction from the third section to the fourth section; at least one of the second section and the fourth section is provided with a channel, the channel extends in the first direction, the channel is communicated with the laminar flow gap, and the channel is communicated with the two ends of the sleeve in the first direction; and an external thread is arranged on the outer surface of the fourth section and is in threaded connection with the internal thread. According to the laminar flow element provided by the embodiment of the invention, the technical problem that the sleeve cannot be used after assembly errors are solved.

The invention relates to a high-reliability leakage-free rotary fluid connector which comprises a fixed shell and a rotary shell, the fixed shell and the rotary shell form rotary connection at the connecting end in a hole shaft mode, a sealing sleeve and a bearing are arranged on a step shaft of the rotary shell, the sealing sleeve is provided with double-side sealing, a movable sealing ring is installed on the inner side of the sealing sleeve and makes sealing contact with the step shaft, and the bearing is arranged on the bearing. The sealing performance in the under-pressure rotating process is fully guaranteed through the arrangement of multi-stage sealing and the spring plug ring, the bearing is used as a rotating supporting assembly and matched with the sealing sleeve, reliable supporting is formed on the rotating shell, rotating resistance is reduced, and the positioning precision and coaxiality are improved. Abrasion caused by deflection in the rotating process is prevented, and the service life is prolonged.

The utility model relates to a filter cartridge for a pit filter, and belongs to the technical field of pit filters. Comprising an inner cylinder and an outer cylinder, the outer cylinder is a hollow annular shell, the inner wall and the outer wall of the outer cylinder are each provided with a first through hole communicated with the interior of the outer cylinder, the inner cylinder is located in the outer cylinder, the inner cylinder and the outer cylinder are coaxially arranged, and the outer wall of the inner cylinder is provided with a second through hole communicated with the interior of the inner cylinder; an annular water inlet cavity is formed between the inner wall of the outer barrel and the outer wall of the inner barrel, the corresponding ends of the outer barrel and the inner barrel are open, and the end, close to the opening of the outer barrel, of the annular water inlet cavity is fixedly connected with an annular sealing plate. According to the utility model, the problem of low filtering efficiency of a pit filter in the prior art is solved.

The electronic expansion valve comprises a stop seat, a rotor assembly, a screw rod, a valve element assembly and a valve seat assembly, the stop seat is fixedly connected to the valve seat assembly and arranged on the periphery of the screw rod, the valve seat assembly is provided with a valve port part, and the valve element assembly can move in the axial direction of the screw rod relative to the valve seat assembly; one end of the lead screw is fixedly connected to the rotor assembly, the other end of the lead screw is connected with the valve element assembly, and the rotor assembly can drive the valve element assembly to move in the direction close to or away from the valve port part through the lead screw. The end, away from the valve port part, of the stop seat is fixedly provided with a first matching part in movable guide fit with the lead screw. According to the electronic expansion valve, the problem that the lead screw is prone to eccentricity is solved.

The utility model discloses a fixing assembly and air outlet equipment, the air outlet equipment comprises a panel, an air opening assembly and the fixing assembly, and an air outlet is formed in the panel; the air port assembly is exposed out of the air outlet; the fixing assembly is used for installing the air opening assembly on the panel in a rotatable mode. According to the fixing assembly and the air outlet equipment, the structural arrangement of the air outlet equipment is more reasonable, and better air outlet performance can be achieved.

The invention relates to the technical field of optical fiber communication, and discloses a high-return-loss coaxial beam expanding contact which comprises a ceramic sleeve, a beam expanding lens, a slide and an optical fiber pin. The front end surface of the optical fiber pin is a first inclined surface; the rear end surface of the slide is a second inclined surface having the same inclination angle as the first inclined surface, so that the rear end surface of the slide and the front end surface of the optical fiber pin form angle adaptation and are fixed, and emergent light emitted from the front end surface of the optical fiber pin is subjected to angle correction and first-stage beam expansion; the front end face of the glass slide is a plane, the rear end face, facing the glass slide, of the beam expanding lens is a vertical plane, the beam expanding lens receives the light beam subjected to angle correction and primary beam expanding through the glass slide, and parallel light beams subjected to secondary beam expanding are emitted from the front end face of the beam expanding lens after secondary beam expanding. The high-return-loss coaxial beam expanding contact has the advantages of being low in loss, high in return loss, good in interchangeability, high in pollution resistance and stable in connection, and can be integrated in various optical fiber and photoelectric composite connectors such as circular optical fiber, rectangular optical fiber and neutral optical fiber and photoelectric composite connectors for application.

The utility model provides a tensioning device for welding a high-sealing air pipe, which comprises a rack, an eighth motor arranged on the rack, a rotating shaft arranged on one side of the rack and a tensioning mechanism arranged on the rotating shaft, and the rotating shaft is connected with the eighth motor through a coupler; the tensioning mechanism comprises a fixing ring, a sliding ring, a driving cylinder, connecting rod assemblies and tensioning rods, the fixing ring is fixedly arranged at one end of the rotating shaft in a sleeving mode, the sliding ring is arranged at the other end of the rotating shaft in a sleeving mode, the multiple connecting rod assemblies are evenly distributed between the fixing ring and the sliding ring, and each connecting rod assembly is connected with the corresponding tensioning rod parallel to the rotating shaft. According to the thin-wall air pipe butt-joint positioning device, butt-joint positioning during welding of thin-wall air pipes is achieved through the tensioning mechanism designed on the rotating shaft, butt-joint of the air pipes is convenient and fast, coaxiality after butt-joint is good, the rotating shaft can achieve the welding mode that a workpiece rotates and a welding gun is fixed, and welding quality and welding efficiency can be greatly improved.

According to the zirconia implant surface modification treatment system and the transparent electrode preparation method, the upper end of a glass tube of the system is connected with a pneumatic connector, and the pneumatic connector is connected with a vacuum pump through a pipeline; the transparent electrode is sprayed on the outer wall of the glass tube; the rod-shaped electrode is fixed in the center of the inner side of the lower end of the glass tube; the zirconium oxide implant is inversely arranged above the rod-shaped electrode and is tightly attached to the rod-shaped electrode; the spraying area of the transparent electrode on the outer side of the glass tube completely wraps the zirconium oxide implant, and the spraying area of the transparent electrode on the outer side of the glass tube further wraps a rod-shaped electrode with a preset length; the transparent electrode is electrically connected with a low-voltage electrode of the plasma power supply, the rod-shaped electrode is electrically connected with a high-voltage electrode of the plasma power supply, and the plasma power supply excites plasmas through the transparent electrode and the rod-shaped electrode so as to modify the surface of the zirconium oxide implant. According to the method, the problems of limited use scene, difficulty in visual presentation, poor processing effect, high cost and incapability of meeting immediate processing in the prior art are solved.

The invention relates to the technical field of production of ornaments, in particular to an automatic diamond feeding and optical sorting all-in-one machine for semi-finished glass diamonds. Comprising a bottom plate, and a drilling assembly, a conveying, cleaning and drying module and an optical sorting module are sequentially arranged on the bottom plate; the bottom plate is fixedly connected with a fixing frame, the fixing frame is in sliding connection with a first sliding plate, the first sliding plate is in sliding connection with a second sliding plate, the second sliding plate is fixedly connected with two first driving parts which are symmetrically distributed, and the telescopic ends of the two first driving parts are jointly and fixedly connected with an ejector pin set; and a visual feedback module is arranged on the connecting plate. The positions of the glass drills are fed back through the visual feedback module, when batch dislocation of the glass drills occurs, the positions of the multiple adsorption pieces and the ejector pin sets are changed in a self-adaptive mode, the multiple adsorption pieces and the ejector pin sets are aligned with the centers of the glass drills, the probability that the edges of the glass drills are damaged and fall off in the transferring process is reduced, and the shape integrity degree of the glass drills is improved.

The invention provides a laser communication device for rapid link establishment and networking and a satellite internet constellation. The device utilizes the wavelength division multiplexing unit and the pre-aiming unit to realize beam combination of receiving and transmitting optical path signals so as to improve the coaxiality of receiving and transmitting branches; an optical fiber displacement device arranged on the transmitting-receiving lens is used for adjusting the relative position of the beam combining optical fiber and the focal point of the transmitting-receiving lens, and continuous beam changing of a transmitted light path signal within the divergence angle range of 55-1000 microrad is achieved; and a position sensing unit is matched to focus a receiving light path signal, so that a 0.2-1-degree receiving light path continuous field of view is realized. Through 10000 times of offset error estimation simulation, the coverage rate of an uncertain area to a target light spot reaches 99.32%, and about 1mrad beam change can be realized, so that minute-level capture efficiency is realized under the condition of the continuous field of view.

The utility model belongs to the technical field of welding, and discloses a pre-welding jig which comprises a machine frame, a first clamp, a second clamp, a welding assembly, a first driving piece and a positioning assembly, the first clamp and the second clamp are used for clamping the two ends of a battery cell shell and are both arranged on the machine frame, and the first clamp and the second clamp are provided with a first avoiding opening and a second avoiding opening respectively. The welding assembly is used for penetrating through the first receding opening and the second receding opening to weld the battery cell shell, the first driving piece is used for driving the first clamp to rotate with the axis of the battery cell shell as the center, and the battery cell shell and the second clamp are both driven by the first clamp to synchronously rotate. The first positioning piece is provided with a positioning part and is in transmission connection with the second clamp, the first receding opening and the second receding opening are both coaxial with the positioning part, the second positioning piece can be inserted into and withdrawn from the positioning part, and the pre-welding jig can avoid the problem of welding omission at the two ends of the battery cell shell and can improve the coaxiality of pre-welding points at the two ends of the battery cell shell.

This utility model discloses a high coaxiality radio frequency connector, including a male and a female connector. The female connector has three sets of connecting plates on its outer periphery, and the male connector has three sets of insertion slots on its outer periphery that mate with the connecting plates. A disassembly component for separating the male and female connectors is located beside the insertion slots. The female connector is inserted into the insertion slot of the male connector via the connecting plates, completing the coaxial connection between the male and female connectors. This utility model, through the cooperation between the connecting plates of the female connector and the insertion slots of the male connector, and the correspondence between the fastening protrusions and the positioning slots, makes the connection between the male and female connectors more precise, effectively preventing displacement or deformation of the inner and outer conductors caused by frequent insertion and removal, maintaining stable coaxiality, and ensuring signal transmission consistency and reliability.