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48 results about "Tooth rotation" patented technology
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But teeth can also become rotated after eruption. Tooth rotation often occurs as a result of crowding, which forces the tooth to present its narrower profile in rotation. Crowding related to wisdom teeth is often cited as a cause for this.
Dental appliance having selective occlusal loading and controlled intercuspation
ActiveUS20190175304A1Improve orthodontic treatmentIncrease applied bite forceImpression capsOthrodonticsDental instrumentsBiting force
Methods and apparatus for producing controlled tooth-moving forces are provided. An orthodontic appliance includes one or more occlusal surface features that modify bite forces between opposing teeth during intercuspation to aid in realignment of the teeth. The interception bite forces can be applied between appliance shells on opposing arches, or between an appliance shell and an opposing tooth. These modified bite forces can be used to supply or augment tooth-moving forces, and the tooth moving forces can produce moments to urge rotational movement of a tooth. Also described herein are orthodontic appliances having an occlusal outer surface contours that are distinct from the occlusal inner surface contour within the dental appliance and may be configured to selectively intercuspate.
Owner:ALIGN TECH
Milling vibration stability predicating method based on process damping effect
ActiveCN105608288AImprove accuracySolve the problem that the cutting parameters cannot be selected using the stable domainProgramme controlComputer controlDamping factorDynamic models
The invention provides a milling vibration stability predicating method based on the process damping effect. According to the method, in the milling process of a workpiece, the geometric structure parameter of a milling tool and the dynamic parameter in the milling process are obtained, the total energy generated by ploughing and milling force in the workpiece milling process in one cutter tooth rotation cycle is determined, the damping coefficient of the equivalent linear process is obtained through the law of conservation of energy, equivalent linear process damping is converted into equivalent process damping in the x direction and equivalent process damping in the y direction, the equivalent process damping coefficient in the x direction and equivalent process damping coefficient in the y direction are input into a milling dynamics equation, a milling dynamics model based on the process damping effect is obtained, a ZOA method is adopted to solve the milling dynamics model based on the process damping effect, and a vibration stability model based on the process damping effect is obtained, so that relation between extreme stability cutting depth and the cutter rotation speed is obtained, and a vibration stability steel lobe diagram based on the process damping effect is drawn.
Owner:NORTHEASTERN UNIV
Overrun clutch
ActiveCN106090068AAvoid stress concentrationAvoid wear and tearFreewheel clutchesStress concentrationEngineering
Owner:GUANGDONG UNIV OF TECH
Adjustment method for rotary fulcrums in dental orthodontics
The invention provides an adjustment method for rotary fulcrums in dental orthodontics. The adjustment method includes the steps of S1, according to a teeth model, determining an occlusal surface; S2, according to the occlusal surface, generating a occlusal axis; S3, acquiring a normal axis and a tangential axis which are initialized by each tooth; S4, calculating a central point of an intersecting contour line of the occlusal surface and the surface model of the tooth, wherein the rotary fulcrum of the tooth is formed in the central point; S5, generating an initial automatic rotating axis of the tooth; S6, moving the normal axis along the plane parallel to the occlusal surface and penetrating the rotary fulcrum of the tooth to enable the normal axis to be parallel to a check tongue direction or a lip tongue direction; S7, adjusting the automatic rotary axis to enable the same to penetrate the rotary fulcrum of the tooth to be mutually vertical to the normal axis and the tangential axis in the step S6. With the method, the problem that the actual correction effect is different from what is anticipated can be solved; modeling is performed on the basis of a dental crown and a teeth root, and the rotary fulcrums are effectively adjusted according to modeling of the dental crown and the teeth root, so that the most ideal orthodontics effect is acquired.
Owner:边专
Orthodontic bracket system
ActiveUS20120295213A1Easy to operateGood removal effectBracketsDental toolsWire ligatureInsertion stent
The orthodontic bracket system includes a bracket having a base for attachment to a tooth surface, a stem above the base, tie wings extending from the stem for securing ligatures, and an archwire slot for receiving an archwire defined by the stem and tie wings. Distal and mesial side surfaces of the bracket base are perpendicular to the archwire slot to allow a rotational device to apply rotational force to a tooth perpendicular to the archwire with direct vector-line guidance. Occlusal and gingival edges of the bracket base between the tie wings are scooped-out or recessed to provide more space to receive a tool under an elastic ligature, and select corners of the tie wings are beveled enlarging space to facilitate entry of instruments for removing wire ligatures, to facilitate instrument access for removal and replacement of ligatures, while streamlining tooth rotation to make arch correction more efficient.
Owner:ORTHO ORGANIZERS
Winding device
A winding device 1 including a base 3 including a drum accommodation portion 33 that accommodates a drum 4 including upward teeth 46, the accommodation portion 33 being cylindrical and having a closed end, and a dial 5 including downward teeth (53) to rotate the drum 4. The dial 5 is moved to a locked state in which the downward teeth are engaged with the upward teeth 46 to transmit rotation of the dial 5 to the drum 4 and an unlocked state in which the downward teeth are disengaged from the upward teeth 46. The winding device 1 includes an annular gear (51) including projections and roots extending in the rotation axis direction of the dial 5 and a pawl 36 protruding from the drum accommodation portion 33. The pawl 36 is designed to engage with the annular gear. The annular gear and the pawl 36 control rotation of the dial.
Owner:ALPEN CO LTD
Power cabinet with good heat dissipation effect and high safety
InactiveCN107946988AEffective controlHave a cooling effectSubstation/switching arrangement cooling/ventilationSubstation/switching arrangement casingsMotor driveGear drive
The invention discloses a power cabinet with good heat dissipation effect and high safety, comprising a power cabinet box, a cooling device is arranged inside the power cabinet box, a telescopic motion device is arranged on one side of the cooling device, and the cooling device is A temperature sensor is provided on the side of the device away from the telescopic motion device. In the present invention, the hot air of the power cabinet box can be blown away by the fan provided with the cooling device, and the effect of cooling can be achieved. The moving gear rotates, thereby driving the first and second rotating teeth to rotate. The first and second rotating teeth make the telescopic rod move up and down. The telescopic rod drives the fan to blow air up and down to make the cooling effect better. The temperature sensor can sense the air in the air. If a fire occurs, the temperature rises, and the temperature sensor receives a signal, which can effectively control the fire source.
Owner:DIMENSION TECH
Engine crankshaft signal disc abrasion detection method and device and electronic control unit
Owner:WEICHAI POWER CO LTD
Method and system for bodily translating a tooth with a wide and adjustable width brackets
A system and method for translating teeth along an arch wire which utilizes brackets with larger dimensions and with variable dimensions so that larger lever arms are possible thereby reducing the need for excessive pressure and reducing occasions of excessive tooth rotation which is incidental to tooth translation.
Owner:STALEY ROBERT N
Preignition detection method for internal combustion engine
ActiveCN108414230ASmall amount of calculationShort market cycleInternal-combustion engine testingExternal combustion engineTime–frequency analysis
The invention relates to a preignition detection method for an internal combustion engine. The method comprises the steps that all instantaneous angular accelerations in a feature window are integrated to acquire an integral value, and whether the internal combustion engine is pre-ignited according to the integral value and a preignition threshold in a detection window; the feature window is an angular range corresponding to the compression top dead center of the internal combustion engine and continuous 3 to 5 signal teeth behind the compression top dead center along the rotation direction ofa crankshaft; and the instantaneous angular accelerations correspond to the signal teeth in the feature window one to one. According to the invention, the preignition detection method has the advantages of simple algorithm and small calculation amount; 3 to 5 data of the feature window are numerically integrated; abnormal combustion is not judged by cylinder pressure reconstruction through complicated time-frequency analysis and vibration information; changing the structure of the internal combustion engine is not needed; the marketization cycle is short; a 58-tooth rotation speed sensor is one of the basic configurations of the internal combustion engine; the method does not need any additional device, so that the cost is low; the detection accuracy is high for both steady state and transient conditions; and the method has a good application prospect in a real vehicle environment.
Owner:TSINGHUA UNIV
Establishing method for depressed auxiliary arch tooth rotation angle prediction model
The present invention discloses an establishing method for a depressed auxiliary arch tooth rotation angle prediction model and relates to the technical field of orthodontic treatment. The establishing method comprises the following steps: 1) analyzing structural features and loading characteristics of a depressed auxiliary arch; 2) establishing a lateral view arc correction torque equation of thedepressed auxiliary arch; 3) establishing an anterior view arc correction torque equation of the depressed auxiliary arch; 4) establishing a dynamic resistance model in a wax jaw ridge simulated tooth movement process; and 5) establishing the depressed auxiliary arch tooth rotation angle prediction model. The establishing method for the depressed auxiliary arch tooth rotation angle prediction model can provide parameter supports for physicians to use the depressed auxiliary arch to correct high-angle type overlying jaws, assists doctors to improve safety and predictability of the orthodontictreatment, and improves digitization degrees of the oral cavity orthodontic treatment.
Owner:HARBIN UNIV OF SCI & TECH
Wood fire-retarding treatment technology method
InactiveCN109176791AEasy maintenanceEasy loadingWood treatment detailsCoating impregnationEngineeringThreaded rod
The invention discloses a wood fire-retarding treatment technology method. A fire-retarding material coating device is applied to the wood fire-retarding treatment technology method and comprises a machine body and a coating cavity arranged in the machine body; the inner all of the top of the coating cavity is provided with a slide guiding groove in a communicating mode, and the left inner wall and the right inner wall of the first slide guiding groove are internally provided with symmetrical liquid storage cavities; the right end of the coating cavity is provided with a second slide guiding groove; the inner wall of the bottom of the coating cavity is slidably connected with a loading moving block in a matched mode, and the loading moving block is internally connected with a first threaded rod extending in the left-right direction through a thread in a matched mode; the tail of the right end of the first threaded rod stretches into the second slide guiding groove and is provided witha tooth rotation wheel; a third slide guiding groove provided with an upward opening is formed in the end surface of the top of the loading moving block and internally and slidably connected with a bilaterally-symmetrical clamping blocks in a matched mode; a second threaded rod extending in the left-right direction is connected into the clamping blocks through threads in a matched mode; and the tail of the right end of the second threaded rod stretches out of the end surface of the right end of the loading moving block and is fixedly connected with a second tooth rotation wheel.
Owner:竺妙飞
Rotation center design inspection method, shell-shaped dental device design and preparation method
ActiveCN111437047AEnsure consistencyGuarantee the target correction effectOthrodonticsDental instrumentsBiomedical engineering
The invention provides a rotation center design inspection method and a shell-shaped dental device design and a preparation method. The rotation center design inspection method comprises the followingsteps of classifying a single digital dental crown model, fitting a long axis of the single digital dental crown model, determining an impedance center of the digital dental crown model, simulating atooth arrangement design of the digital dental crown model, and optimally adjusting the rotation center, wherein a preset position of an inspection rotation center is designed based on a ratio of moment generated by applying to the digital dental crown model and the balanced moment produced by applying to a digital teeth appliance and rotation amount in tooth arrangement design, thereby realizingoptimal adjusting of the rotation center. Through single digital dental crown model classification, dental crown model long axis fitting, impedance center determination, tooth arrangement design androtation center optimization adjustment, the designed tooth rotation center is basically consistent with the rotation center in the actual correction process, the tooth treatment effect conforms to the expected effect, and medical negligence is further avoided.
Owner:SHANGHAI SMARTEE DENTI TECH CO LTD
One-piece molar-back-pushing device
The invention discloses a one-piece molar-back-pushing device. The device comprises: a pair of retention pieces, wherein a pair of the retention pieces is separately fixed at the palate side of dentalcrowns of molars at the two side of the oral cavity; a connecting body which is arranged between a pair of the retention pieces in a connection mode; traction hooks, wherein a plurality of the traction hooks comprise front traction hooks and side traction hooks, the front traction hooks are arranged on the connecting body, and the side traction hooks are respectively arranged on the retention pieces; at least one micro screw which is fixed at the palate part of the oral cavity and is positioned at the far middle side of the connecting body; and at least one connecting piece, wherein each connecting piece is arranged between one micro screw and one traction hook in a connection mode. The one-piece molar-back-pushing device is simple in structure and convenient to use, can push back molarsas far as possible within the physiological limit, can effectively overcome the defects of lip inclination of anterior teeth, cheek inclination of posterior teeth, tooth rotation and the like, and reduces the implantation number of micro screws.
Owner:PEKING UNIV SCHOOL OF STOMATOLOGY
Personalized customized invisible orthodontic appliance for III type malocclusion
The invention discloses an invisible appliance for III type malocclusion. The appliance is provided with energy storage components, an appliance body is made from a polymer material, and traction hooks or lingual side buckles are attached to the lingual sides of C6 and D6 and labial sides and lingual sides of C4 and D4 of the corresponding tooth positions on the appliance; each pair of the traction hooks or lingual side buckles between the lingual sides of C4 and C6 and between the lingual sides of D4 and D6 are sleeved with rubber bands, spring wires, stainless steel wires, titanium-nickel alloy and other energy storage components, and the positions between the traction hooks or lingual side buckles at the labial sides of C4 and D4 and biological anchorage nails knocked in the mandibularalveolar bone of the corresponding same side are also sleeved with congeneric energy storage components. When the whole pushback force is formed to the underjaw, the whole anchorage of the teeth is ensured, and front tooth lip leaning or tooth rotation cannot be caused. The appliance adopts a 3D technology, is combined with digital orthodontic software, solves the problems of bite, malocclusion and crowded dentition by fixing the rubber bands, the spring wires, the stainless steel wires, the titanium-nickel alloy and the other energy storage components on the traction hooks or lingual side buckles bonded or integrally formed on the invisible appliance, achieves the correction purpose of quickly moving teeth, can greatly shorten the correction cycle, can also avoid a jaw opening surgery, and greatly reduce wounds.
Owner:西安博恩生物科技有限公司
Rotation center design inspection method, shell-like dental instrument apparatus design and preparation method
ActiveCN111437048AGuarantee the target correction effectEnsure consistencyOthrodonticsDental instrumentsEngineering
The invention provides a rotation center design inspection method, shell-like dental instrument apparatus design and a preparation method. The rotation center design inspection method comprises the steps of classifying single digital dental models, fitting long axes of the single digital dental models, determining the impedance center of the digital tooth models, simulating the tooth arrangement design of the digital tooth models, and optimizing and adjusting a rotation center. Based on a ratio of moment applied and generated on a digital tooth crown model to trimming moment applied and generated on a digital tooth treatment appliance and a preset position of a rotation amount design inspection rotation center during tooth arrangement design, optimizing and adjusting of the rotation centerare realized. The single digital tooth models are classified, the long axes of the tooth models are fitted, the impedance center is determined, tooth arrangement design is performed, and the rotationcenter is optimized and adjusted, so that the designed tooth rotation center and the rotation center in an actual treatment process is basically consistent, the tooth treatment effect conforms to desired effects, and generation of medical care accidents is further avoided.
Owner:SHANGHAI SMARTEE DENTI TECH CO LTD
Invisible orthodontic appliance with energy storage elements and used for class II malocclusion
The invention discloses a device provided with energy storage elements on an invisible orthodontic appliance for class II malocclusion. The device comprises an appliance body (1), lingual sides of A4and B4 corresponding to tooth positions, labial sides and lingual sides of A5 and A7, and labial sides and lingual sides of B5 and B7 on the appliance, wherein the labial sides and lingual sides are respectively provided with traction hooks or lingual side buckles. Energy storage elements such as rubber bands, spring wires, stainless steel wires, titanium-nickel alloys and the like sleeve each pair of traction hooks or lingual buckles on labial sides and lingual sides between A5 and A7 and between B5 and B7, and the same energy storage elements are arranged between the traction hooks or lingual buckles on the lingual sides of A4 and B4 and anchorage nails at corresponding positions on the left side and the right side of the upper jaw. When integral rear pushing force is formed, integral anchorage of teeth is guaranteed, and front tooth lip inclination or tooth rotation cannot be caused. According to the appliance, the CAM is adopted, digital orthodontic software is combined, the energystorage elements such as rubber bands, springs, stainless steel wires, titanium-nickel alloys and the like are fixed to the traction hooks or lingual buckles adhered or integrally formed on the invisible appliance, the problems of occlusion, malocclusion and crowded dentition are solved, the purpose of rapidly moving teeth is achieved, the correction period can be greatly shortened, jaw opening surgery can be avoided, and wounds can be greatly reduced.
Owner:西安博恩生物科技有限公司
A rack operating component
The invention discloses a gear frame operating assembly, which includes: an overturn half gear frame locking mechanism, which is connected with the overturn half gear frame of the sock machine transfer device, and connected with the central installation pipe or the turret of the hosiery machine transfer device, and is used to turn over the half-carrier is locked in a state where the second functional tooth is facing down; the flip half-carrier unlocking mechanism drives the flip half-carrier locking mechanism to move to unlock the flip half-carrier; and the flip half-carrier rotation mechanism is connectable to the flip A half-carrier for rotating the reversing half-carrier after it is unlocked. Utilizing the rack operating assembly of the present invention, the fixing and flipping of the flipped half rack relative to the fixed rack can be realized in a simple manner, thereby realizing the overlap of the sock toe.
Owner:浙江海润精工机械有限公司
Rapid installation type anti-freezing faucet
PendingCN108302214AFreeze to deathFreeze cracking and other problemsOperating means/releasing devices for valvesCheck valvesAnti freezingEngineering
The invention discloses a rapid installation type anti-freezing faucet. A valve core is of a pipeline structure with water feeding from the lower portion and discharging from the upper portion; the lower portion of an outer tooth rotation rod is connected with a movable ceramic chip through a convex groove structure; the upper portion of a fixed seat is welded to the lower portion of a fixed pipe;a lifting inner pipe is arranged in the fixed pipe; an inner tooth connector is welded to the lower end of the lifting inner pipe and internally provided with a one-way valve, and the inner tooth connector is in clearance fit with an outer tooth on the upper portion of the outer tooth rotation rod; a locking nut and a fixing connection nut sleeve the upper middle portion of the fixed pipe; a clearance is formed between the lower portion of the fixing connection nut and the fixed pipe; and the upper end of a pre-buried pipeline is inserted into the clearance and connected with an internal thread of the fixing connection nut. According to the rapid installation type anti-freezing faucet, the effects that water is conveniently used outdoors in winter, and the pipeline and the faucet are freeof freezing and cracking are ensured, engineering construction is not needed, the market vacancy is filled in, no energy source is wasted, the situation that heat is preserved by consuming energy isavoided, professional staff construction is not needed, installation, maintenance and replacement can be achieved only through a simple tool, installation is rapid, and maintenance is convenient and fast.
Owner:唐山开丰卫浴用品有限公司
Electromechanical hybrid and additional tooth-pushing anti-theft alarm lock
InactiveCN104563645AReasonable structureEasy to manufactureNon-mechanical controlsKeysRemote controlInvisibility
The invention discloses an electromechanical hybrid and additional tooth-pushing anti-theft alarm lock. A connector of the electromechanical hybrid and additional tooth-pushing anti-theft alarm lock is disconnected from a rear lock cylinder, a locking head locks the rear lock cylinder, an expansion sheet, a tooth rotation wheel and a lock column lock a front lock cylinder, the front lock cylinder and the rear lock cylinder are completely disconnected and asynchronously rotate for alarming, and an electronic remote control device is mounted in a power supply circuit of an electromagnet invisibly. The electromechanical hybrid and additional tooth-pushing anti-theft alarm lock integrates the functions of electromechanical interlocking invisibility, mechanical interlocking invisibility, connection invisibility of the front lock cylinder and the rear lock cylinder and asynchronous alarming, so that a thief cannot unlock an interlocking device and cannot rotate the rear lock cylinder; even if the interlocking device and the lock column are damaged in a barbarous way, only the front lock cylinder can be rotated while the rear lock cylinder cannot be rotated. Even if the thief drills out the front lock cylinder and the rear lock cylinder by using an electric hand drill and rotates a connection tongue by using a tool such as a clamp, a rotary contact is not in contact with a fixed contact, so that the power supply circuit of the electromagnet cannot be switched on; in addition, the electronic remote control device switches off the power supply circuit of the electromagnet, and a transverse safety lock pin cannot be unlocked, so that a thorough anti-theft effect can be achieved.
Owner:余虹仪
A Method for Establishing a Predictive Model of Tooth Rotation Angle in Auxiliary Arch for Depression
The present invention discloses an establishing method for a depressed auxiliary arch tooth rotation angle prediction model and relates to the technical field of orthodontic treatment. The establishing method comprises the following steps: 1) analyzing structural features and loading characteristics of a depressed auxiliary arch; 2) establishing a lateral view arc correction torque equation of thedepressed auxiliary arch; 3) establishing an anterior view arc correction torque equation of the depressed auxiliary arch; 4) establishing a dynamic resistance model in a wax jaw ridge simulated tooth movement process; and 5) establishing the depressed auxiliary arch tooth rotation angle prediction model. The establishing method for the depressed auxiliary arch tooth rotation angle prediction model can provide parameter supports for physicians to use the depressed auxiliary arch to correct high-angle type overlying jaws, assists doctors to improve safety and predictability of the orthodontictreatment, and improves digitization degrees of the oral cavity orthodontic treatment.
Owner:HARBIN UNIV OF SCI & TECH
Tower crane rotation limiter in tower crane operation
The invention discloses a tower crane rotation limiter in tower crane operation. The tower crane rotation limiter comprises a rotating seat and a base which are distributed up and down, the top of the base is rotatably connected with the bottom of the rotating seat through an outer tooth rotation support, a driving gear is connected to the outer ring of the outer tooth rotation support in a meshing mode, and the driving gear is vertically and rotatably installed in a limiter installation frame through a driving shaft; two limiting devices are installed at the upper end and the lower end of the driving shaft, each limiting device comprises a bearing with an inner ring fixedly connected with the outer wall of the driving shaft, a gear ring is rotatably connected to the outer ring of each bearing, a plurality of clamping teeth consistent in direction are evenly distributed on the inner wall of each gear ring, a plurality of limiting ratchet structures are connected to the inner wall of the inner ring of each bearing, and the limiting ratchet structures extend towards the inner walls of the gear rings and are matched with the clamping teeth; and the clamping teeth on the upper limiting device and the lower limiting device are opposite in direction. The clamping teeth on the upper limiting device and the lower limiting device are opposite in direction, so that when the gear rings on the upper limiting device and the lower limiting device at different positions rotate, the driving shaft can be driven to rotate in different directions.
Owner:安徽悠然云端科技有限公司
Electromechanical combined asynchronous interlocking tooth pushing lock
InactiveCN104499827AReasonable structureEasy to manufactureNon-mechanical controlsKeysRemote controlDrill
The invention discloses an electromechanical combined asynchronous interlocking tooth pushing lock. A rear lock cylinder of the electromechanical combined asynchronous interlocking tooth pushing lock is completely disconnected from a connector and a front lock cylinder; the connector is hidden in an invisible hole; a tooth rotation wheel, a rotation angle and a rotation disk lock the front lock cylinder, a locking head locks the rear lock cylinder, the front and rear lock cylinders asynchronously rotate for warning, and an electronic remote control device is mounted in a power supply circuit of an electromagnet. The electromechanical combined asynchronous interlocking tooth pushing lock integrates the functions of electromechanical interlocking invisibility, mechanical interlocking, invisibility, connecting invisibility of the front lock cylinder and the rear lock cylinder and asynchronous warning, so that a thief cannot open an interlocking device and cannot rotate the rear lock cylinder; even if a tooth pushing device and a connecting locking device are damaged in a barbarous way, only the front lock cylinder can be rotated while the rear lock cylinder cannot be rotated. Even if the thief drills out the front lock cylinder and the rear lock cylinder by using an electric hand drill and rotates a connecting tongue by using a tool such as a clamp, a rotary contact is not in contact with a fixed contact, so that the power supply circuit of the electromagnet cannot be switched on; in addition, the electronic remote control device switches off the power supply circuit of the electromagnet, and a transverse safety lock pin cannot be opened, so that a complete and thorough anti-theft effect can be achieved.
Owner:徐浩钟
Dodecagonal spline tooth rotation preventing self-locking check ring
The invention discloses a dodecagonal spline tooth rotation preventing self-locking check ring which comprises a part body (1). The part body (1) is shaped like a short pipe with one end closed. The closed end of the short pipe is provided with a dodecagonal spline tooth hole (2) coinciding with the central axis of the short pipe. The outer cylindrical face of the short pipe is provided with an external thread (4). The inner wall of the short pipe is provided with sunken deformation pits (3) uniformly distributed along the circumference. The end face of the unclosed end of the short pipe is provided with screwing notches (5) uniformly distributed along the circumstance. The check ring has the beneficial effects of having a self-locking function and having an ability to prevent rotation. The check ring is sufficient in strength, firm and reliable in connection, and particularly suitable for limiting the axial position of a part in the hole after the part in the hole is assembled, and can be applied to other occasions with large axial loads.
Owner:GUIZHOU AEROSPACE PRECISION PRODS
A Prediction Method of Milling Chatter Stability Based on Overdamping Effect
ActiveCN105608288BImprove accuracyIncrease productivityProgramme controlComputer controlDynamic equationClassical mechanics
Owner:NORTHEASTERN UNIV LIAONING
A cleaning mechanism for the inner wall of a barrel
ActiveCN112676288BSolve the problem of inconvenient circulationAvoid offsetHollow article cleaningCleaning using liquidsGear wheelEngineering
The invention discloses a cleaning mechanism for the inner wall of a material tank, which relates to the field of medical machinery and includes a housing. The inner wall of the housing is connected with a horizontal frame. The outer side of the horizontal frame is sleeved with a driving mechanism. A cleaning mechanism, a rotating mechanism is installed at the end of the cleaning mechanism, and a barrel is sleeved on the outside of the cleaning mechanism. In the present invention, through the provided casing, cleaning mechanism and transmission mechanism, when the cleaning mechanism moves above the horizontal frame, the friction teeth first engage with the chute, the friction teeth engage with a group of gear bars, and the driving mechanism drives the cleaning mechanism to move linearly , thus driving the friction teeth to move along the gear bar, so that the friction teeth rotate, the friction teeth drive the driving teeth connected to the top to rotate, the driving teeth drive the outer transmission teeth to rotate, and the transmission teeth drive the second set of transmission teeth to rotate through the transmission rod, the second The outer wall of the set of driving teeth is connected with the driven teeth, which effectively solves the problem of complex use and high cost of the cleaning mechanism.
Owner:YICHUN WANSHEN PHARMA MACHINERY +1
Tooth pushing electromechanical mixed anti-theft alarm lock
InactiveCN104514429AReasonable structureEasy to manufactureNon-mechanical controlsKeysRemote controlEngineering
The invention discloses a tooth pushing electromechanical mixed anti-theft alarm lock. A connecting body which is hidden inside an invisible hole is disconnected with a rear lock cylinder, a front lock cylinder is locked by an expansion piece and a tooth rotation wheel, the front lock cylinder and the rear lock cylinder which are completely disconnected asynchronously rotate to alarm, an electric remote control device is installed inside a power supply circuit of an electromagnet in an invisible mode, and an oblique hanging direct pushing rotary type unlocking mode is adopted; electromechanical interlocking invisibility, mechanical interlocking, invisibility, connection invisibility of the front lock cylinder and the rear lock cylinder and asynchronous alarm are integrated, a burglar cannot open an interlocking device and rotate the rear lock cylinder, and namely, only the front lock cylinder rotate and the rear lock cylinder cannot rotate after the interlocking and self-locking portions are damaged through barbaric means; even the burglar drills the front lock cylinder and the rear lock cylinder through an electric hand drill, a connecting bolt rotates through tools such as a clamp, a rotary contact point which is in contact with a contact point being not fixed cannot switch on the power supply circuit of the electromagnet, the power supply circuit of the electromagnet is interrupted through the electric remote control device, and a safety lock bolt cannot be opened.
Owner:徐浩钟
Self-positioning dental computed tomography scanning method and device
The invention provides a self-positioning dental computed tomography scanning method and device. The method includes the steps of placing an X-ray image sensor on the inner side of a to-be-measured tooth; setting an X-ray source on the outer side of the tooth; setting a plurality of light shielding mark points on an X-ray path; controlling the X-ray source to rotate around the tooth, and controlling the X-ray image sensor to acquire a plurality of CT 2D images during the rotation; calculating the X-ray source position and angle corresponding to each CT 2D image; and generating a 3D image of the tooth by using the CT 2D images and the corresponding X-ray source positions and angles. The scanning device includes the X-ray image sensor, the X-ray source, a rotation control device, the plurality of light shielding mark points, and a processing device connected to the X-ray image sensor. The method and device not only can obtain an accurate dental three-dimensional CT image, but also can avoid unnecessary harm to the human body caused by CT on the entire head.
Owner:慧友安控电子(深圳)有限公司
Molar back push device
PendingCN111529095APrevent rotationIncrease connection areaOthrodonticsPalatal rootBiomedical engineering
The invention discloses a molar back push device. The device comprises at least one retention part, at least one implantation nail and at least one connecting piece; each retention part comprises a retention part and a traction hook; the retention parts are connected to the dental crown palate sides of premolar, first molar and second molar on one side of the upper jaw of an oral cavity; the traction hooks are respectively arranged at the near-middle ends of the retention parts; the implantation nails are in one-to-one correspondence with the retention parts, and each implantation nail is located between the palatal root of the first molar and the palatal root of the second molar on the same side as one retention part and is close to the second molar; and each connecting piece is connectedbetween one planting nail and one traction hook on the same side. Through the device, the molars can be moved backwards as much as possible within a physiological limit, stress application is more flexible, and adverse molar buccal inclination and tooth rotation are avoided. Meanwhile, the bonding area is increased, bonding strength is improved, intraoral stability of the device is optimized, clinical use is facilitated, and the device has good comfort.
Owner:PEKING UNIV SCHOOL OF STOMATOLOGY
Electromechanically-combined, asynchronous interlocking and additional tooth-pushing anti-theft lock
InactiveCN104563649AReasonable structureEasy to manufactureNon-mechanical controlsKeysRemote controlSelf locking
The invention discloses an electromechanically-combined, asynchronous interlocking and additional tooth-pushing anti-theft lock. A connector of the electromechanically-combined, asynchronous interlocking and additional tooth-pushing anti-theft lock is disconnected from a rear lock cylinder, a locking head locks the rear lock cylinder, an expansion sheet, a tooth rotation wheel and a lock column lock a front lock cylinder, the front lock cylinder and the rear lock cylinder are completely disconnected and asynchronously rotate for alarming, and an electronic remote control device is mounted in a power supply circuit of an electromagnet invisibly. The electromechanically-combined, asynchronous interlocking and additional tooth-pushing anti-theft lock integrates the functions of electromechanical interlocking invisibility, mechanical interlocking invisibility, connection invisibility of the front lock cylinder and the rear lock cylinder and asynchronous alarming, so that a thief cannot unlock an interlocking device and cannot rotate the rear lock cylinder; even if interlocking and self-locking parts are damaged in a barbarous way, only the front lock cylinder can be rotated while the rear lock cylinder cannot be rotated. Even if the thief drills out the front lock cylinder and the rear lock cylinder by using an electric hand drill and rotates a connection tongue by using a tool such as a clamp, a rotary contact is not in contact with a fixed contact, so that the power supply circuit of the electromagnet cannot be switched on; in addition, the electronic remote control device switches off the power supply circuit of the electromagnet, and a transverse safety lock pin cannot be unlocked, so that a thorough anti-theft effect can be achieved.
Owner:徐园植
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