1712 results about "Conical surface" patented technology

The invention relates to the technical field of pinhole piece wall thickness detection, in particular to an electric connector pinhole piece wall thickness detection device and method, a swing arm is rotationally installed on an adjusting frame, the swing arm is pressed on the upper end face of a pinhole piece, and a limiting piece for limiting the swing arm to rotate away from the pinhole piece is arranged on the adjusting frame; the device has the beneficial effects that by arranging the detection conical column with the standard size, the pressing height of the hole opening of the pinhole piece and the conical surface of the detection conical column and the inner diameter of the hole opening are detected, meanwhile, the thickness measuring probe is accurately inserted into the detection hole, the thickness measuring probe can conveniently detect the inner contour of the detection hole, and the detection efficiency is improved in the detection process. During detection, only the pinhole piece needs to be controlled to stably descend, so that the detection efficiency is greatly improved, the detection steps are simplified, the device is suitable for large-scale detection, and whether the internal contour of the detection hole is qualified or not can be judged by comparing the inner diameter data of the orifice with the detection data of the thickness measuring probe.

The invention discloses a pipeline inner wall panoramic three-dimensional scanning device and a measuring method, and the device comprises a panoramic plane laser generator which comprises a point laser generator, an axicon, a laser focusing lens, a conical surface reflector and a transparent cylindrical support, and is used for transmitting a 360-degree panoramic plane laser beam to the inner wall of an object to be measured; according to the invention, single-exposure full-circumferential high-precision three-dimensional measurement is realized, and the device can synchronously obtain complete three-dimensional point cloud data of the circumference of the inner wall of the whole pipeline at the moment of single exposure through innovative combination of a panoramic annular imaging system and a panoramic planar laser projection technology; the method has the advantages that axial rotary scanning or multi-view data splicing required by a traditional method is avoided, measurement efficiency is improved, splicing accumulative errors are avoided, laser stripe image acquisition is complete and free of breakpoints, and completeness and accuracy of three-dimensional reconstruction data are guaranteed from the source.

The invention discloses a stabilizing support of an air sampler, and belongs to the technical field of environment monitoring equipment, the stabilizing support comprises a support body and a bearing platform used for bearing the sampler, the top of the support body is connected with the bearing platform through a universal spherical hinge assembly, and the universal spherical hinge assembly comprises a base, a universal ball head and a short supporting column; the universal ball head is connected with the bearing platform through a short supporting column, a gravity center adjusting bin is fixedly arranged below the bearing platform, a lantern ring type locking mechanism is arranged on the opening portion of the base, and three or more radial guide grooves are formed in the end face of the opening portion of the base in the circumferential direction of the base. Each radial guide groove is internally provided with a locking block capable of sliding along the groove, the locking lantern ring can be rotated to move in the axial direction of the base, and then the locking blocks are driven to synchronously move inwards along the radial guide grooves through the conical surface extrusion effect so as to tightly hold the universal ball head. The problems that in the prior art, leveling efficiency is low, locking is prone to loosening, and the anti-overturning capacity is poor are effectively and comprehensively solved.

The utility model relates to the technical field of positioning tools, and particularly discloses a quick positioning device for processing internal and external key grooves, which comprises a mandrel, an expansion sleeve, a nut and a processing workpiece, a threaded section is arranged on the surface of the mandrel, a positioning block is fixedly arranged on the surface of one end of the mandrel, a clamping groove is arranged on the outer circumferential surface of the expansion sleeve, and key grooves are arranged in an inner hole of the processing workpiece. Positioning strips are fixedly arranged on the outer circumferential surface of the expansion sleeve. According to the technical scheme, the opening seams are evenly distributed in the two ends of the expansion sleeve, the mandrel is attached to the conical surface of the expansion sleeve, the expansion sleeve is matched with the nut to achieve radial expansion of the expansion sleeve and used for clamping a workpiece, the positioning strip of the expansion sleeve is connected with the key groove of the machined workpiece in a clamped mode, and anti-play assembly of the expansion sleeve and the machined workpiece is achieved. The mandrel is clamped into the clamping groove of the expansion sleeve through the positioning block to achieve anti-play assembly of the mandrel and the expansion sleeve, so that when the two ends of the mandrel are fixed, a machined workpiece can be rapidly positioned, and the outer key groove to be machined of the machined workpiece can be conveniently machined.

The invention belongs to the technical field of engineering elements, and discloses a pressure selection valve, a pressure stop valve structure and a hydraulic system. The pressure selection valve at least comprises a valve sleeve, a first valve element and a second valve element, the valve sleeve is at least provided with a first oil port and a second oil port, the first oil port and the second oil port are communicated with an inner cavity of the valve sleeve, and the first valve element and the second valve element are sequentially arranged in the inner cavity in a sliding mode. When the oil pressure at the first oil port is larger than that at the second oil port, the first valve element can abut against and push the second valve element, so that the second valve element can stretch out through the first opening and abut against and push an external stress piece. When the oil pressure at the first oil port is smaller than the oil pressure at the second oil port, the first valve element and the second valve element are far away from each other, and the second valve element can stretch out through the first opening and abut against an external stress piece. According to the pressure selector valve, a conical surface sealing structure is omitted, the machining difficulty of the hole and the valve element is reduced, the machining cost is saved, and the pressure selector valve has good economical efficiency.

The utility model relates to the technical field of bearing disassembly metallurgy vehicle automatic joint devices, in particular to a double-four-connecting-rod lifting steel ladle bottom argon blowing automatic joint device which comprises a bottom argon blowing arc-shaped male joint, a high-temperature-resistant seal and a supporting frame, and the bottom argon blowing arc-shaped male joint is arranged above a fixing rod and can slide up and down. The device is characterized in that a four-connecting-rod lifting mechanism is arranged in the supporting frame, and the four-connecting-rod lifting mechanism is connected with the fixing rod; the bottom argon blowing arc male connector and the fixing rod are directly provided with a compression spring. The utility model has the advantages that: firstly, the spherical guide of the male connector is utilized, the sealing connection of the conical spring is reliable, the ladle car can be transformed and used on the basis of the original ladle car, the manufacturing cost is low, the sealing is reliable, steel slag blocks can conveniently flow down along the conical surface, the conical surface sealing is not easy to remain steel slag, and the conical surface is firmly matched without air leakage; and secondly, the device is simple in structure and convenient to transform and install, the working intensity of the bottom argon blowing joint of a maintainer is reduced, and the steelmaking labor productivity is improved.

According to the robot vision calibration device and method, through collaborative design of the industrial personal computer, the vision system, the robot, the calibration jig and the calibration plate, the problems caused by complex structure, low calibration precision and poor adaptability in the prior art are solved. A floating mechanism of the calibration jig is combined with a displacement sensor to realize multi-degree-of-freedom dynamic displacement compensation, so that mechanical positioning errors are remarkably reduced; the conical surface guide structure and the reference hole layout of the calibration plate optimize the stability of the positioning reference, and ensure the accurate embedding of the calibration needle. The flexible installation of the visual system adapts to different scene requirements. According to the calibration method, the generation of a high-precision visual calibration matrix is realized through the processes of multi-reference hole coordinate recording, calibration ring coordinate calculation and visual image acquisition and matching. According to the whole scheme, through a dynamic compensation mechanism and intelligent process design, the calibration precision, efficiency and robustness are improved, meanwhile, the operation complexity is reduced, and reliable technical support is provided for an industrial automation scene.

The present application relates to a kind of rocket engine injector thin-wall milling self-positioning fixture and assembly method, it mainly includes upper positioning tire body component, conical surface expansion ring, tire unloading bottom plate, pressing cover plate, tire unloading lifting ring, pressing bolt, expansion screw, lower positioning bottom plate component, locking bolt, long fixed bolt, lower positioning bottom plate component is fixed in machine tool workbench by locking bolt long-term, always not disassembled.Product is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion screw before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thin-wall;Injector thin-wall is positioned and clamped and supported by conical surface expansion ring, tire unloading bottom plate, pressing cover plate, pressing bolt, expansion sleeve before milling injector thin-wall and positioning tire body component, limit the radial and axial movement of injector thinn

The utility model discloses an anchor rod device for municipal construction, and relates to the technical field of municipal construction engineering. Comprising an anchoring head, a counterbore is formed in the anchoring head, the anchoring head is in threaded connection with an outer sleeve through the counterbore, an insertion rod is in threaded connection with the interior of the outer sleeve, a conical surface concave shoulder is arranged at the bottom end of the insertion rod, grooves are formed in the side walls of the periphery of the anchoring head, the grooves are communicated with the counterbore, claw bodies are hinged into the grooves, and the tail ends of the claw bodies are attached to the conical surface concave shoulder. According to the anchor rod device for building municipal administration, the inserting rod is lifted upwards by screwing the inserting rod, at the moment, the conical surface concave shoulder at the bottom end of the inserting rod moves upwards, the claw can be driven to expand outwards from the periphery of the anchoring head, and therefore the friction force between the anchor rod piece and a soil body or rock is enhanced, and the anti-drawing capacity of the anchor rod piece is effectively improved; the arranged guide rods, backing rings and buffer springs have certain buffering performance, deformation and displacement of the structure can be reduced, overall connection of the structure is enhanced, and the anti-seismic performance and stability of the structure are improved.

The invention relates to the technical field of resistance spot welding, in particular to a cement telegraph pole reinforcement cage automatic binding and welding integrated device based on PLC control. The device comprises a working rotating disc rotationally connected with a mounting support, a machining channel allowing the reinforcement cage to horizontally penetrate through is formed in the center of the working rotating disc, a conductive wheel and a pressing assembly are arranged on the same side of the working rotating disc, and the conductive wheel, the pressing assembly and the reinforcement cage form a closed conductive loop. When the diameter of the produced reinforcement cage is small, the axial component force applied to the spiral bar by the cylindrical pressing wheel is guided by the inclined plane of the groove, and forced friction is reduced. When the diameter of a produced reinforcement cage is large and the reset slope of the circular truncated cone pressing wheel presses a spiral bar, the acting direction of force is more deviated to the radial direction, the axial component force is reduced, and therefore the axial friction force is reduced. When the reset slope on the periphery of the round table roll welding wheel is in contact with the spiral rib, an inclined contact line along the conical surface is formed.

The invention provides a tank-type circuit breaker AC / DC voltage withstand test electric field improvement method and device and a storage medium, and the device comprises an epoxy resin composite insulator embedded with an aluminum alloy spherical shell, and the spherical shell achieves the equipotential connection with the wire outlet end of a circuit breaker sleeve through conical surface cooperation. And the curvature radius is optimally designed to transfer an electric field peak value to an equatorial region. The spherical shell is coated with a semi-conductive silicone rubber layer with resistivity distributed in a gradient manner, and the outer insulator forms a multi-stage umbrella skirt structure. During installation, dimensional tolerance self-adaptive compensation is achieved through a cam locking mechanism of the floating flange, and the belleville spring set provides axial sealing pre-tightening force. The method comprises four core processes of composite structure coaxial installation, gradient electric field regulation and control, dynamic sealing locking and electric heating state verification. According to the scheme, an electrode structure is reconstructed to suppress point discharge, space charge accumulation is blocked through dielectric layer resistivity gradient distribution, the creepage distance along the surface is prolonged through the multi-stage umbrella skirts, and the technical defect that the safety distance is shortened by a traditional grading ring is overcome.

The invention relates to the technical field of hydraulic valves, and discloses an integrated safety hydraulic control one-way valve integrated with a tail beam telescopic cylinder, which comprises a valve body, a through main channel arranged in the valve body and a valve core assembly arranged in the main channel, the valve core assembly comprises a joint valve sleeve, a valve core spring, a valve core, a valve seat, a liquid inlet valve sleeve, an ejector rod spring and an ejector rod, the valve seat is arranged between the connector valve sleeve and the liquid inlet valve sleeve, the valve element is arranged in an inner cavity of the connector valve sleeve in a sliding mode, and the ejector rod is arranged on the axis extension line of the valve element. The valve element is of a primary-secondary valve structure and comprises a main valve element and a pilot valve element coaxially arranged in the main valve element, an axial guide inner cavity is formed in the center of the interior of the main valve element and comprises a damping cavity and a conical surface plugging cavity, and a pilot valve channel is formed in the wall of the damping cavity. The problem that a valve element of a traditional hydraulic control one-way valve rapidly moves at the hydraulic control opening moment to generate severe mechanical impact is solved, and the service life of a valve set is prolonged.

The invention provides a tool for chamfering an upper surface and a lower surface separately, intelligent chamfering equipment and a chamfering method, and relates to the technical field of chamfering of welding cutting. The cutter comprises a floating cutter handle, a cutter bar, a rotating sleeve, an upper cutter holder, a lower cutter holder, an upper pressing wheel, a lower pressing wheel, an upper depended wheel and a lower depended wheel, the upper cutter holder is sleeved with an upper pressing disc, the bottom face of the upper pressing disc is detachably connected with the rotating sleeve, a plurality of upper blades extend out of the top face of the upper pressing disc, and the side face of the upper depended wheel is a first conical face. The small end of the first conical surface is the top surface of the upper leaning wheel; the lower blades extend out of the bottom face of the lower pressing disc, the side face of the lower depended wheel is a second conical face, and the small end of the second conical face is the bottom face of the lower depended wheel. The lower blades extend out of the bottom face of the lower pressing disc, the side face of the lower depended wheel is a second conical face, and the small end of the second conical face is the bottom face of the lower depended wheel.

The invention relates to the technical field of fasteners, in particular to a threaded pulling nail and a preparation method and an installation method thereof. The thread drawing nail comprises a nail sleeve, a core rod, a forming sleeve, a lining and a mounting nut. The forming sleeve and the lining sleeve are arranged on the core rod in a sleeving manner; the nail sleeve and the mounting nut are screwed on the core rod; a threaded hole and a limiting hole are formed in the center of the nail sleeve; a nail sleeve locking shoulder is formed between the limiting hole and the threaded hole; the core rod comprises a clamping section, a first screw section, a second screw section, a limiting step section and a core rod head from top to bottom; external threads with the same shape are arranged on the peripheral surfaces of the first screw section and the second screw section, and a broken diameter groove is formed between the first screw section and the second screw section; the top surface of the head of the core rod is an inverted conical surface and forms a conical surface groove; a core rod stop shoulder is formed on the top surface of the limiting step section; the lower end of the forming sleeve abuts against the interior of the conical surface groove. After the blind rivet is riveted, the limiting step section can be inserted into the limiting hole, and the core rod locking shoulder and the rivet sleeve locking shoulder abut against each other to form limiting.

The invention belongs to the technical field of machining, and particularly relates to a clamping tool and method for machining the large end face and the small end face of a thin-wall conical barrel. Comprising a supporting base used for being in butt joint with a machine tool workbench. The large end face of the conical mould is detachably connected with the supporting base; the conical strap is arranged on the periphery of the conical mould in a sleeving manner, and the conical strap and the conical mould form an internal and external clamping structure for the thin-wall conical barrel; the pressing plate assembly comprises a plurality of upper pressing plates arranged on the small end face of the conical clamping fixture and a plurality of lower pressing plates arranged at the large end of the conical strap. Self-centering clamping is achieved through conical surface matching of the conical strap and the conical mould, the rigidity of the thin-wall conical barrel is enhanced, vibration and deformation in the machining process are effectively restrained, a bidirectional constraint structure of the pressing plate assembly counteracts cutting force, the end face machining precision is ensured, the conical strap is always kept in a pressed state during machining face conversion, and the machining precision is improved. The thin-wall conical barrel is prevented from moving, the problem of size deviation caused by repeated clamping of the thin-wall conical barrel is solved, and the product forming quality is remarkably improved.

The invention discloses an anti-loose structure nut and a using method thereof, and the anti-loose structure nut is composed of an upper nut and a lower nut; one end of the upper nut is of a conical surface structure, and the inclined angle of the conical surface structure relative to the central axis of the upper nut is 16 degrees; a groove is formed in the conical surface structure; the upper portion of the lower nut is an inner taper hole, the lower portion of the lower nut is a straight hole, and the included angle between inclined generatrixes on the two sides of the inner wall of the inner taper hole is 16 degrees. The diameter of the inner taper hole is smaller than that of the conical surface structure. The using method comprises the following steps that (1) the lower nut is screwed into the bolt penetrating into the interlayer; and (2) screwing the upper nut into the inner taper hole of the lower nut by adopting a hexagonal wrench. The device is simple in structure and easy to process and manufacture; common carbon steel or stainless steel materials are adopted, so that the manufacturing cost is low; the locking torque is large and stable, and the anti-loosening performance is excellent; during installation, the locking torque can be adjusted according to actual requirements; and the locking torque is stable and reliable, and can be repeatedly disassembled and used.

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

The utility model is suitable for the technical field of solar cells, and provides a back contact solar cell, a cell assembly and a photovoltaic system. The back contact solar cell comprises a silicon wafer, the silicon wafer is provided with a front surface and a back surface which are oppositely arranged, the back surface comprises a first doped region, the first doped region is a P-type doped region or an N-type doped region, the first doped region is provided with a suede, the suede comprises a plurality of cone-like structures, each cone-like structure is provided with a conical surface and a conical top, and a concave part is formed at the joint of the adjacent cone-like structures; and the thickness of the first doping layer in the concave part is greater than the thickness of the first doping layer in the cone top. According to the back contact solar cell of the utility model, the thickness of the first doping layer at the concave part is greater than the thickness of the first doping layer at the cone top, so that the thickness distribution of the doping layers on the suede surface is more beneficial to the improvement of the cell efficiency.

The invention relates to the technical field of grain conveying, and discloses a dust suppression type unpowered grain conveying device which comprises a charging barrel and a discharging hopper, a discharging channel is formed in the center of the lower end of the discharging hopper, a cover plate is arranged at the upper end of the charging barrel, a feeding hopper is arranged on the upper side of the cover plate, and a plurality of flow guide pipes distributed in the circumferential direction are arranged on the feeding hopper; a shaft body assembly is arranged in the center of the charging barrel, a hopper core assembly is arranged at the lower end of the shaft body assembly, a conical surface is arranged at the lower end of the hopper core assembly, and an annular discharging gap is formed between the conical surface and the inner wall of the discharging hopper; a connecting sleeve is arranged in the center of the bottom face of the cover plate, the shaft body assembly penetrates through the connecting sleeve to form rotary connection, a plurality of blades obliquely distributed in the circumferential direction are arranged on the side face of the upper end of the bucket core assembly, the lower end of the flow guide pipe faces the blades, and a rotary lifting mechanism is arranged between the connecting sleeve and the shaft body assembly. The device has the beneficial effects that the opening degree of the annular discharging gap can be adjusted in a self-adaptive mode according to grain flow, and dust is prevented from escaping along with the grain flow.

The invention relates to the technical field of welding. The integrated welding device for the high-pressure gas filter comprises a machine table, a cone-frustum-shaped inner tire matched with the inner edge of the filter is transversely arranged on the machine table, and a cone-frustum-shaped outer tire matched with the outer edge of the filter is arranged on the portion, on one side of the inner tire, of the machine table; the outer tire is carried on the sliding seat and can reciprocate along the direction close to or far away from the inner tire; a partition plate extending in the length direction of the inner tire is detachably arranged on the surface of one side of the inner tire, and a receding opening allowing the partition plate to penetrate through is formed in the position, opposite to the partition plate, of the outer tire. A machine frame is arranged above the machine table, a moving platform capable of moving in the length direction and the height direction is arranged on the machine frame, and a welding machine and a welding gun are carried on the moving platform. Based on the integrated design of conical surface adaptive positioning, axial extrusion roundness correction and accurate alignment welding, efficient and high-quality machining of the filter conical barrel is achieved.

The utility model discloses a high capacity ball mill hard alloy inner container integral compression moulding mould, the inner container comprises a shell and a bottom plate, the shell comprises a small cylindrical surface, a small conical surface, a large conical surface and a large cylindrical surface which are sequentially connected from top to bottom, the bottom plate is arranged at the bottom of the large cylindrical surface, and the mould is an assembled mould. Comprising a square core shaft and four inner molds attached to the four side faces of the square core shaft, and after the four inner molds are spliced to the four side faces of the square core shaft, the outer side faces of the four inner molds are matched with the shell in shape. According to the utility model, the square core shaft is combined with the four-petal inner mold, so that the mold can be conveniently mounted and demolded.

The invention relates to the technical field of waste gas treatment equipment, and provides a waste gas treatment device for producing formic acid from carbon dioxide, which comprises a tower body, and the tower body is provided with a gas inlet and a gas outlet; the turbulent flow assembly is horizontally arranged in the tower body, the turbulent flow assembly comprises a mounting plate, the mounting plate is horizontally arranged in the tower body, and a plurality of water passing holes are uniformly distributed in the mounting plate; the spiral flow guide cone is inversely arranged below the mounting plate, and the conical surface of the spiral flow guide cone, the spiral flow guide cone and the mounting plate are connected through a plurality of elastic pieces. According to the technical scheme, the inverted arrangement of the spiral flow guide cone is matched with the spiral flow guide groove, so that gas-liquid two-phase flowing along a straight line originally is converted into gas-liquid two-phase flowing along a spiral path, the contact time of the gas-liquid two-phase in the tower body is prolonged, and meanwhile, the spiral flow guide cone can swing when being impacted by gas and liquid through elastic traction; the contact angle of the gas phase and the liquid phase is continuously changed, a stable liquid film is prevented from being formed on a conical surface, the disturbance of a gas-liquid interface is enhanced, and the mass transfer efficiency is improved.

The utility model relates to the technical field of pneumatic heatproof ground test equipment for aerospace crafts, in particular to a conical spray pipe which comprises an inner shell, a transition shell layer and an outer shell, the transition shell layer is sleeved on the outer side of the inner shell, and the outer shell is sleeved on the outer side of the transition shell layer. The inner shell is divided into three sections in the axial direction, and a plurality of reinforcing ribs are evenly arranged on the outer side conical surfaces of the first section, the second section and the third section at intervals in the circumferential direction. The number of the reinforcing ribs at the second section is smaller than that of the reinforcing ribs at the first section and the third section, and a cooling liquid channel is formed between every two adjacent reinforcing ribs in the circumferential direction. According to the conical spray pipe, the reinforcing ribs are arranged in the axial direction of the spray pipe in a segmented mode, the number of the reinforcing ribs in the circumferential direction of the throat is smaller than that of the reinforcing ribs arranged on the contraction section and the expansion section, and the reinforcing ribs serve as structural reinforcing structures of the inner shell and serve as wall bodies of the cooling channels at the same time, so that passing of cooling liquid at the throat is guaranteed; the cooling effect at the throat is improved, and sufficient strength of the inner wall of the spray pipe is ensured.

The utility model provides an optical device adjusting frame. The optical device adjusting frame comprises a movable flat plate, a mirror frame, a rotating body, an elastic piece and a locking piece. The mirror bracket is arranged on one side of the movable flat plate. A conical surface groove is formed in at least one of the faces, close to each other, of the mirror frame and the movable flat plate, the rotating body is clamped between the mirror frame and the movable flat plate and can rotate in the conical surface groove, and the elastic piece is connected with the movable flat plate and the mirror frame. When the elastic piece stretches out and draws back, the movable flat plate can pitch and / or deflect relative to the mirror frame so as to adjust the posture of the optical component, and therefore the purpose of adjusting the optical component to the needed posture is achieved, and adjustment of the light path of the optical component is achieved. Meanwhile, the locking piece is arranged on the mirror bracket, and when the optical component is adjusted to the required preset posture, the locking piece and the movable flat plate are connected together so as to fix the optical component for subsequent use.

The utility model relates to a snap fastener which comprises a male fastener component and a female fastener component, the male fastener component comprises a male fastener base body and a clamping protrusion protruding outwards from the male fastener base body, the circumferential surface of the clamping protrusion is a first conical surface, and the first conical surface gradually shrinks from one end close to the male fastener base body to the other end in the radial direction. The inclination of the first conical surface is kept consistent in the axial direction of the first conical surface, the female buckle component comprises a female buckle base body and a clamping groove formed in the female buckle base body, the clamping groove sequentially comprises a guide-in groove part and a limiting groove part in the direction from a groove opening to the groove bottom, and the circumferential groove wall of the guide-in groove part is a second conical surface; the second conical surface gradually shrinks in the radial direction from the notch of the clamping groove to the bottom of the clamping groove, and the inclination of the second conical surface is kept consistent in the direction from the notch of the clamping groove to the bottom of the clamping groove. According to the snap fastener, sudden change of force in the buckling and unbuckling process of the snap fastener can be avoided, the needed force changes uniformly, and therefore a user can control the buckling or unbuckling force conveniently, and the purpose of improving the use hand feeling of the user is achieved.

The utility model relates to the technical field of medical instruments, and particularly discloses a water jet pressurizing device which comprises a pump body, a liquid inlet connector, a liquid outlet connector, a first one-way pre-tightening valve and a second one-way pre-tightening valve. The pump body is provided with a piston cavity, one end of the pump body is provided with a first cavity and a second cavity, a liquid inlet channel is communicated between the first cavity and the piston cavity, and a liquid outlet channel is communicated between the second cavity and the piston cavity; one end of the liquid inlet connector is installed in the first cavity, and a first conical surface is arranged on the inner wall of the end, close to the liquid inlet channel, of the liquid inlet connector. The first one-way pre-tightening valve is arranged between the first conical surface and the pump body; one end of the liquid outlet connector is installed in the second cavity, and a second conical surface is arranged at the end, close to the liquid outlet connector, of the liquid outlet channel. And the second one-way pre-tightening valve piece is arranged between the second conical surface and the liquid outlet connector. According to the secondary emptying device, secondary emptying of the pump body can be effectively achieved, the emptying efficiency is high, and the operation risk and the operation cost are reduced.

The invention relates to a thin-wall circular ring one-time forming layered trepanning machining method, and belongs to the technical field of machining. The machining method is characterized by comprising the following steps that (a) a disc blank is clamped on a four-jaw chuck of a lathe, and the outer circle clamping position is adjusted, so that the coaxiality jerk value of the center position of the disc blank and a main shaft of the lathe is smaller than or equal to 0.05 mm; (b) according to the machining number of the thin-wall circular rings, layered machining is conducted in sequence from outside to inside, and rough machining grooving, finish machining inner hole / outer circle and conical surface angle compensation turning are conducted on each layer in sequence; (c) an outer circle clamping mode and an inner hole tight supporting clamping mode are dynamically switched, the clamping force is adjusted in a self-adaptive mode according to the clamping position of the chuck, and the oil pressure is controlled to be 0.8-1.2 MPa; and (d) cutting off and separating the part by adopting an inner hole groove cutter, wherein the feed amount is less than or equal to 0.1 mm / r. The method has the advantages that one-time forming machining of the thin-wall circular ring is achieved through a layered trepanning strategy and dynamic clamping compensation, and the problems that a traditional process tool is high in dependency and low in machining precision are solved.

The invention discloses a high-reliability automatic press-fitting machine for an O-shaped sealing ring of a vehicle-gauge-level pressure sensor, and belongs to the technical field of industrial assembly, the O-shaped sealing ring is horizontally conveyed to a bearing ring by a conveying plate to be preliminarily preassembled by arranging a double-station material taking mechanism and a feeding press-fitting mechanism, the bearing ring is jacked and supported upwards, so that the O-shaped sealing ring is automatically pressed under the uniform thrust, and then the O-shaped sealing ring is automatically pressed and assembled. The sealing ring is stably and upwards pushed along the conical surface of the expanding conical sleeve of the feeding press-fitting mechanism, and the sealing ring is not directly clamped in the process, so that the sealing ring is pushed to the magnetic gauge protection sleeve of the gauge protection press-fitting assembly for target positioning in a restrained, coaxial and uniformly stressed state; the double-station rotating and parallel operation is adopted, distortion caused by local stress concentration and asynchronous deformation is avoided, lossless expanding positioning is achieved, then a gauge protection pressing assembly mode of the gauge protection pressing assembly on the sealing ring is matched, the sealing ring is made to be sleeved on the sensor in a barrier-free mode, lossless flexible assembly is achieved, and in addition, the double-station rotating and parallel operation is achieved, and the double-station rotating and parallel operation is suitable for a high-speed automatic production line.

The utility model discloses a bucket cover easy to pull open and good in sealing performance and a bucket. The bucket cover comprises a cover body, a first convex ring and a sealing piece. The sealing piece comprises a second convex ring and an inverted cone located on the lower portion of the second convex ring. The sealing piece is provided with the inverted cone of the hollow structure, the inverted cone provides a space for inward folding deformation, and the annular drawing mark can be torn off with smaller force. Meanwhile, large water pressure in the barrel can be diffused and divided towards the peripheral conical surface of the inverted cone through the inverted cone and cannot be concentrated on the sealing piece, so that the annular drawing mark is not prone to breakage, and the sealing piece is prevented from leaking water easily.

The invention provides a quick chuck, which relates to the technical field of machining and comprises a mounting seat and an expansion sleeve slidably mounted in the mounting seat, an expansion sleeve mounting hole is formed in the mounting seat, the expansion sleeve is mounted in the expansion sleeve mounting hole, a first horn mouth with an upward opening is formed in the inner wall of the expansion sleeve mounting hole, and the outer wall of the expansion sleeve is a conical surface. The molded surface of the horn mouth I is matched with the conical surface molded surface of the outer wall of the expansion sleeve; the molded surface of the inner wall of the expansion sleeve is a horn mouth II with an upward opening; an elastic driving part is mounted on the mounting seat, is connected with the bottom end of the expansion sleeve, and drives the expansion sleeve to move towards the bottom surface of the expansion sleeve. Only one up-and-down linear motion piece is needed to abut against or loosen the lower end of the lever, and then disassembly and clamping of the workpiece can be achieved. And application in an automatic production line is facilitated, and the construction and maintenance cost of an execution mechanism of the automatic production line is reduced. In addition, due to the fact that the clamping structure is simple in driving action for achieving clamping, the clamping efficiency is greatly improved, and the production line rhythm is improved.