34 results about "Skin stretch" patented technology

The invention discloses a skin stretch forming residual stress rapid calculation method which comprises the following steps: randomly generating a combination of a pre-stretching amount, a coating elongation rate and a friction coefficient, submitting the combination to finite element analysis software to execute batch simulation, and generating a result file named by process parameters; traversing all the result files, extracting node numbers and residual stress values, and storing the node numbers and the residual stress values as a text format data set corresponding to the process parameters; a full-connection neural network model is constructed, an input layer receives the three process parameters of the pre-stretching amount, the coating elongation and the friction coefficient, a hidden layer comprises multiple layers of neurons and adopts a ReLU activation function, and an output layer generates residual stress values of all nodes; training the neural network model by using the data set, and adjusting the network weight through an optimizer; and inputting target process parameters to the trained neural network model, and outputting residual stress calculation results of all nodes of the skin. The technical purposes of rapidness, high efficiency and low cost are achieved.

A vehicle seat includes a frame; a pad disposed on the frame; a skin covering the pad; an airbag device attached to the frame, and including an airbag and an inflator; a guide member that is provided on an inner surface side of the skin at a position corresponding to the airbag device, and that guides a deployment of the airbag; and an engagement member that pulls the skin in the pad. A length in an up to down direction from a first upper end to a first lower end of the engagement member is longer than a length in the up to down direction from a first upper end portion to a first lower end portion of a first end portion of the guide member.

The invention discloses a multi-modal intelligent skin patch for multi-scene cardiopulmonary function monitoring and a use method thereof. The multi-modal intelligent skin patch comprises a layered structure body, a flexible circuit board, a multi-modal sensing assembly, a power management assembly and a wireless communication module. The layered structure body comprises an upper Ecoflex material layer, a lower Ecoflex material layer, a lithium battery and a wireless charging coil, wherein the lithium battery and the wireless charging coil are packaged between the two Ecoflex material layers. A layered structure in which the upper Ecoflex material layer and the lower Ecoflex material layer package the lithium battery and the wireless charging coil is adopted, and a polyimide flexible circuit board and a double-bridge snake-shaped structure sensing wire are combined, so that the equipment is endowed with excellent tensile tolerance and skin fitting property; in cooperation with the sweat-proof adhesiveness of the 3M2477P medical silica gel double-faced adhesive tape and the high conductivity of the high-adhesiveness conductive hydrogel layer, the problems of electrode falling and signal distortion caused by sweating and skin stretching in violent activities such as high-intensity intermittent movement are fundamentally solved, and stable acquisition of electrocardio, PPG and respiratory wave signals is ensured.

The utility model relates to the field of stretching probes, in particular to a stretching probe for migratory locust epidermis testing, which comprises a support table. The texture analyzer main body is mounted at the rear end part of the supporting table, the fixture base is arranged at the upper end part of the supporting table, a first fixture seat is mounted at the upper end part of the fixture base, and a second fixture seat is arranged at the upper end part of the first fixture seat; the end part of one side of the first clamp seat and the end part of one side of the second clamp seat are rotationally connected with plug bolts; springs are arranged on the outer sides of the plug bolts; the texture analyzer main body and the clamp base are placed through the supporting table, the friction fixing seat is driven to move through the knob bolt, and the friction fixing seat is positioned and supported through the plug bolt and the spring, so that the friction fixing seat is matched with the first clamp seat and the second clamp seat to clamp migratory locusts; the migratory locust is protected through the friction plate, so that the stability is improved, and an epidermis stretching test can be conveniently carried out through the texture analyzer main body.

An ungrounded haptic device adapted to be held or worn by a user for simulating kinesthetic forces includes a skin stretch mechanism and at least one vibration generator. The skin stretch mechanism provides haptic shear forces to the skin of the user to simulate continuous and / or persistent forces. A vibration generator mounted to the haptic device provides haptic vibrations to the user to simulate transitory forces. Parameters of the haptic shear forces and parameters of the haptic vibrations are configured to operate complementarily to simulate the kinesthetic forces.

The present application relates to skin stretch forming technical field, and disclose a kind of stretch forming equipment for aluminum alloy skin, including rack, the inside of the middle part of the rack is equipped with jacking mechanism, the upper end of the jacking mechanism is connected with discrete die, the both sides of the rack are respectively provided with multiple groups of independent control flexible clamping mechanism, and the flexible clamping mechanism is symmetrically arranged about the discrete die;The flexible clamping mechanism includes stretch assembly and pressing assembly, the stretch assembly is installed on the pressing assembly, and the pressing assembly is installed on the hydraulic caliper for clamping skin edge.The present application is lifted by the lifting movement of multiple independent control punch assemblies in discrete die, combined with the multilayer composite structure of flexible pad layer, can quickly generate any required curved surface shape without replacing the whole die, and the pneumatic adjusting cavity is independently adjusted by each area inflation pressure, effectively compensates the "step effect" between discrete punch.

The application discloses a skin stress deformation measurement system, method and device, wherein the system comprises: an executor end provided with a transparent pressing part, the pressing part is used for pressing the skin and moving according to a preset direction; a micro camera arranged in the executor end and collecting a first image through the pressing part; a stereo vision camera installed outside the executor end and used for collecting a second image on a skin stretching area and / or a skin accumulation area; and a data processing module, which obtains three-dimensional coordinates of skin particles in an effective contact area according to the first image, obtains three-dimensional coordinates of skin particles in the skin stretching area or the skin accumulation area according to the second image, obtains a deformation condition of the skin according to the obtained three-dimensional coordinates of the skin particles, and performs three-dimensional estimation on the skin stress deformation. The application performs three-dimensional estimation on the deformed skin, provides more accurate data for a skin contact force model, and can be applied to the field of skin stress deformation measurement.

The utility model discloses a control system for adjusting the bending rigidity of a shoe sole. The control system comprises the shoe sole and a controller. The sole comprises a midsole body, a sliding piece and a driving piece. The sliding part is arranged in the insole body and provides rigidity for the insole body, and the driving part drives the sliding part to slide in the insole body in the front-back direction. When the sliding part is located at the half sole part of the insole body, the bending rigidity of the sole is increased, and when the sliding part is not located at the half sole part, the bending rigidity of the sole is reduced. The controller is arranged on the hand and comprises a stretching sensor and a signal generator, the stretching sensor senses stretching or contraction of the hand skin, and the signal generator controls the driving piece to drive the sliding piece to slide forwards or backwards. The control system meets the requirement that the bending rigidity of the shoe sole can be adjusted, and meanwhile the intelligence and individuation of the adjusting mode are improved.

The invention discloses a measuring method and a measuring device for skin stretch forming, and belongs to the technical field of skin processing. According to the measurement method for skin stretch forming, online measurement is carried out on the skin in stretch forming production, so that after stretch forming production is completed, the actual readings of the multiple laser distance measuring pieces are recorded, then the actual cross section is fitted according to the theoretical cross section line of the skin on the preset cross section, and the skin stretch forming precision is improved. Therefore, the purpose of measuring the actual cross section line of the skin on the preset cross section can be achieved, the skin stretch-forming state evaluation difficulty is reduced, and the skin stretch-forming precision can be fully evaluated. According to the measuring device for skin stretch forming, the position of the laser distance measuring part can be greatly adjusted by disassembling and assembling the mounting part; by sliding the second sliding rail and the laser distance measuring part, the positions of the laser distance measuring part in the first direction and the second direction can be finely adjusted, and operation is convenient.

The application discloses an intelligent skin stretching closer, which comprises a cable, a skin traction fixing device, an adjusting device, a driving device, a control device and a pressure sensing device; the cable is used for penetrating into the skin traction fixing device, the adjusting device and the pressure sensing device and bears the traction force of the driving device to the skin; the power device is used for pulling the cable and automatically adjusting the distance between the two skin traction mechanisms to realize the contraction and closure of the skin to be pulled on both sides of the wound; the closer further comprises a driving motor fixedly connected with a female part, a control panel electrically connected with the driving motor and a programmed controller; the closer can realize automatic control, reduces the operation and makes the process controllable.

The application relates to a hyperbolic skin part machining method with local features, and belongs to the technical field of aviation sheet metal manufacturing. The combined forming machining method of the hyperbolic skin local feature part ensures the consistency of skin stretch forming and local forming under the same positioning condition, ensures the shape precision of the skin in the manufacturing process, and improves the accuracy of skin forming machining and measurement. The increased pneumatic forming structure device on the tool structure breaks through the process of completing machining of one skin part by two sets of independent toolings. The two-time forming and one-time positioning mode can accurately manufacture the width and depth of the complex structure, can realize uniform stress of the complex structure surface of the skin, and can realize smooth transition of the surface quality.

The application provides a kind of longitudinal skin stretcher jaw shape control method based on machine vision, which includes: S1, install image acquisition system;S2, calibrate camera by Zhang Zhengyou calibration method, establish the relationship between target pixel point and corresponding target point position in space;S3, turn on the light source, obtain the camera shooting image, and pretreat the image;S4, edge extraction is carried out on the pretreated gray scale image;S5, the edge gray scale image curve is fitted by least square method, the stroke of stretch machine jaw shape control hydraulic cylinder is adjusted, and longitudinal skin stretcher jaw shape control is realized.The application can realize accurate detection of skin blank and jaw state, make the jaw shape and end face shape consistent, and complete the fast and accurate feeding of skin blank into the jaw.The application applies machine vision recognition technology to aviation special equipment, improves the skin stretching precision and the efficiency of blank feeding into the jaw, and helps the transformation and upgrading of equipment automation and intelligentization.

The invention relates to a tactile feedback glove capable of generating skin stretching and squeezing effects and a control method, and belongs to the technical field of man-machine interaction. Comprising a glove assembly and a fingerstall assembly, position and posture synchronization of a virtual hand and a real hand is achieved through a calibration system in a Unity virtual environment, in the interaction process, a computer conducts collision detection on virtual environment interaction actions and communicates with a control system to generate a driving signal, a servo motor is controlled to drive a plastic belt to be combined with a specific mechanical structure, and therefore the mechanical performance of the robot is improved. And rendering tactile feedback under the gripping action in real time. According to the method, the visual matching effect in the interaction process is optimized in the Unity interaction scene, the interaction reality sense of a user is enhanced, and the device can be effectively applied to interaction operation of a VR virtual environment, tactile feedback training of a special scene and the like in an ideal state.

The invention provides a yoke frame swing structure of a skin stretcher, which comprises a seat bracket rotating shaft, a rack, a bracket sliding block, a rotating shaft and an oil cylinder, and can be driven by the oil cylinder to rotate, so that the pitching angle of a jaw of the stretcher can be controlled and adjusted with high precision, and the requirement of complex curved surface forming in skin part manufacturing can be met; the number of corollary equipment and procedures needed in the existing multi-direction curved surface machining process is reduced, and the manufacturing cost is remarkably reduced while the production efficiency is improved.

The utility model discloses a bionic epidermis stretching device which comprises a modeling supporting assembly, epidermis and a driving assembly, the driving assembly is connected with the modeling supporting assembly, and the epidermis is assembled on the outer surface of the modeling supporting assembly. By implementing the device, the friction force can be reduced, the driving load can be reduced, and the movement effect of the skin can be optimized, so that unnatural wrinkles can be avoided, and the bionic effect and the display effect can be further improved.

The utility model discloses a plane leather tightening machine, and belongs to the technical field of leather detection. The at least three execution pieces are uniformly distributed on the same plane of the rack; each execution part is in sliding connection with the rack and is driven by power to move, and the moving direction of each execution part points to the center of the multiple execution parts; the clamps connected with the execution pieces on the execution pieces are used for clamping the edges of leather to be machined correspondingly, and the leather is pulled to be stretched flat through coordinated movement of the execution pieces. By means of coordinated movement of the execution pieces and uniform clamping and pulling of the fixture connected with the execution pieces on the edge of the leather, the cow leather can be fully stretched flat, and the cow leather defect detection accuracy is improved.

The present invention discloses a campus sports digital management method and system thereof, which relates to the technical field of campus sports intelligent digital management. The method first collects students' basic sports information, target skill movement categories and teaching standard text data to establish a standard movement data set; collects video images, electromyographic signals and skin stretching data during the students' movement execution to construct a movement perception set; evaluates the movement quality by calculating the movement completion consistency index and comparing it with a first threshold; calculates the muscle coordination coefficient and compares it with a second threshold to monitor the movement force structure; based on the trained AI scoring model, automatically outputs the movement score and position error, further calculates the skill growth index and compares it with a third threshold to dynamically evaluate the student's skill growth trend; the system automatically generates personalized training strategies and comprehensive scoring reports based on the evaluation results, to achieve accurate monitoring and guidance of movement quality, force coordination and skill growth.

The application discloses a kind of forming device and method of dissimilar direction multi-drawing skin class parts;The device includes skin stretch forming device and skin drawing forming device;Skin stretch forming device has drawing lower die, upper pressing device, rotating support arm, square drawing plate, special-shaped drawing cover plate and multiple drill jig, for forming drawing feature;Skin drawing forming device has drawing lower die, blank holder guide column, positioning plate, drawing upper die and pneumatic column, for forming convex feature;The method comprises: first, through skin stretch forming device, stretch and press drawing feature, drill positioning hole and fixing hole, and use square drawing plate to knock and trim;Then, through skin drawing forming device, after locating, drawing forming convex feature of part.The application combines skin stretch and drawing process, solves the problem of forming difficulty of dissimilar direction multi-drawing skin class parts, and improves forming precision and efficiency.

The invention discloses a skin part local characteristic electromagnetic pulse forming device and method, and relates to the technical field of metal plate part plastic forming manufacturing, the skin part local characteristic electromagnetic pulse forming device comprises an upper pressing beam, a mechanical arm, an electromagnetic coil and a multi-point stretch-forming die, and the multi-point stretch-forming die is installed on a fixed bottom plate; the two ends of the skin plate are tightly attached to the top face of the multi-point stretch-forming die after being clamped and tensioned through a jaw of a skin stretch-forming machine; the shape of the top surface of the multi-point stretch-forming die is adjustable; one end of the mechanical arm is fixed to the upper pressing beam, an electromagnetic coil is installed at the other end of the mechanical arm and used for conducting electromagnetic forming on the skin plate, and the position of the upper pressing beam can be adjusted. A multi-point stretch-forming die and electromagnetic forming are combined, and meanwhile, the high-efficiency characteristic of the multi-point forming technology and the high-precision characteristic of the electromagnetic incremental forming technology are utilized, so that high-efficiency and high-precision digital forming of the complex three-dimensional curved-surface-shaped part can be realized.

The application provides a sunken skin stretch forming path planning method, and belongs to the technical field of stretch forming path planning, and the method comprises the following steps: S1, acquiring the design parameters and forming constraint conditions of the sunken skin; S2, establishing a finite element model of the sunken skin; S3, initial stretch path global planning based on an echo state network-cell mapping hybrid algorithm; S4, finite element simulation verification of the initial stretch path; and S5, stretch path iterative optimization based on a fractional order Kalman filter-dove search hybrid algorithm. The application solves the problems of low stretch forming path planning precision, many forming defects, poor process stability, weak technical reproducibility and the like of the existing sunken skin stretch forming path planning.

This invention provides an adaptive iterative optimization control system for skin forming equipment based on digital twins. It establishes a closed-loop architecture encompassing detection, simulation, and control, and utilizes digital twin technology for simulation and inverse optimization calculation of process parameters. Compared to existing forward trial-and-error and open-loop control methods, this significantly improves the efficiency and accuracy of parameter optimization. The system also establishes a process knowledge base based on a self-learning mechanism, continuously acquiring and accumulating experience from each production run, and continuously improving the accuracy of the digital twin model and the efficiency of the optimization algorithm. This system has strong applicability and can meet the high production requirements of large and complex skins.

The invention discloses a V-shaped skin distractor, and relates to the technical field of medical instruments. The distraction device mainly comprises at least two V-shaped distraction devices and an adjusting rod. The V-shaped distraction device is formed by connecting a distraction arm I and a distraction arm II through a unique hinge structure, namely, a sleeve at one end of the distraction arm I and two connecting rings at one end of the distraction arm II are nested with each other and are penetrated by a rotating shaft. The bottom ends of the distraction arm I and the distraction arm II are provided with fixing structures (a U-shaped bayonet and a fastener) used for fixing an external axial puncture traction needle, and the body parts of the distraction arm I and the distraction arm II are provided with through holes. The adjusting rod penetrates through the through holes, synchronous opening and closing of the distraction arm I and the distraction arm II of the V-shaped distraction device can be accurately controlled by rotating the T-shaped rotary knob at one end of the adjusting rod, and therefore continuous, stable and uniform distraction of the wound edge skin is achieved. The device is ingenious in structural design, easy and convenient to operate, controllable in traction force and uniform in distribution, effectively solves the problems that in the prior art, installation is complex, adjustment is inconvenient, the comfort degree of a patient is poor, and medicine changing is difficult, and is suitable for repairing large-area skin and soft tissue defects.

The utility model belongs to the skin stretching technical field, concretely relates to a kind of automobile skin stretching device, including transverse stretching mechanism, two transverse stretching mechanisms, and longitudinal stretching mechanism is provided between two transverse stretching mechanisms;Transverse stretching mechanism includes mounting plate, and the upper slide of mounting plate is equipped with translation seat, and the one end of translation seat is equipped with several multi-angle clamping mechanisms;Multi-angle clamping mechanism includes electric telescopic handle, and electric telescopic handle is installed in the inside of translation seat, and the output of electric telescopic handle is fixed with ball sleeve, and the inside rotation of ball sleeve is connected with ball shaft.The utility model uses zoned combination jaw clamping, and different pressure is applied to each block area of clamping place according to thickness and inclination angle, and the plate material is kept uniform stress, and self-adapting ball shaft connection is simultaneously used, and jaw position can be self-adapting to produce rotation when longitudinal tension is applied, avoid the plate material of jaw position to appear bending phenomenon, effectively avoid the risk of fracture.

The movable pedal of the skin stretching equipment comprises a movable pedal assembly, a power system, a supporting frame and a connecting frame, the requirement for flexible adjustment of the area of a passing area in the equipment can be met through the size-adjustable modular design, and the problem that the pedal needs to be disassembled and assembled repeatedly when equipment assemblies such as a mold and a clamp tool are replaced is solved; and meanwhile, the manufacturing cost is relatively low.

The utility model provides an aircraft skin stretching and forming device which aims at the defects of existing devices of the same type, a pressure action mechanism and a clamp assembly are improved and optimized, and a designed pitching mechanism and a multifunctional workbench can execute stretching and jacking fine actions in different directions. By means of the technical scheme, high-quality forming of a novel skin of a complex structure can be achieved easily, the clamp assembly with the wedge-shaped jaw can conduct more accurate clamping force control, blank damage caused by improper force application can be effectively avoided, and therefore the finished product rate and the production efficiency of the skin are both remarkably improved.

The invention relates to the technical field of surgery, in particular to an adjustable skin distractor and a distracting method.The adjustable skin distractor comprises an integration plate and a distracting unit; the stretching unit comprises a sliding block, a sliding assembly, a mounting plate, a kirschner wire, a driving assembly and a locking assembly; sliding columns are arranged on the two sides of the sliding block in the first direction; the movable assembly is used for achieving movement of the sliding block in the second direction, achieving swinging of the sliding block around the axis of the sliding column and achieving four degrees of freedom of lifting, rotating around a vertical shaft, horizontal sliding and swinging around a horizontal shaft of the kirschner wire, so that during initial installation, the kirschner wire of each stretching unit can be independently adjusted to the optimal position and angle, and the operation is convenient. It is ensured that the kirschner wire is inserted in the mode of being perpendicular to the local curved surface of the wound, accurate attachment to the arc-shaped or irregular wound surface is achieved, and the effects that traction force on different positions is consistent, and the traction position is more accurate are achieved.

The invention relates to a skin stretching hydraulic control device which comprises a main frame, a stretching oil cylinder, a follow-up mechanism, a jaw bracket, a jaw assembly and a hydraulic power station. A jaw follow-up plate is arranged on the jaw bracket; a jaw assembly is arranged on the jaw follower plate; a group of stretching oil cylinders are arranged below the jaw bracket; the bottoms of the group of stretching oil cylinders are fixed on a bottom plate in the main frame; the follow-up mechanism is fixed on the jaw bracket; a pitching oil cylinder in the follow-up mechanism is movably connected with the follow-up plate; the follower plate is connected with the jaw bracket through a rotary connecting shaft; and the stretching oil cylinder and the pitching oil cylinder are connected with the hydraulic power station. The hydraulic power station is used for driving the follow-up mechanism to connect the jaw assembly and the jaw bracket, a pitching oil cylinder in the follow-up mechanism is controlled through an electromagnetic valve, and pre-stretching is conducted firstly; and then the pitching oil cylinder drives the jaw assembly to accurately and flexibly beat and stretch the skin, so that the stretching quality of the skin is higher, and the percent of pass is greatly improved.

The invention discloses a skin stretch-forming simulation method, a skin stretch-forming simulation device, a readable storage medium and electronic equipment, and the specific implementation scheme is as follows: the motion trails of multiple clamping devices in the stretch-forming process are obtained, the multiple clamping devices are correspondingly arranged on the two sides of a mold, and the clamping devices are used for clamping a skin; each clamping device on one side of the die and each clamping device on the opposite side form a clamping device pair; determining a target time step when a connecting line of the clamper pair and the mold are in an intersection state for the first time based on the position of the clamper pair on the movement track in each time step in the stretch forming process, and determining the stretch forming multiple of the intersection part of the connecting line of the target time step and the mold; and on the basis of the stretch-forming multiple of the target time step intersection part, sequentially determining the stretch-forming multiple of each time step intersection part after the target time step as a simulation result. According to the rapid simulation method for skin stretch forming, the calculation efficiency can be effectively improved, and the time consumption of skin stretch forming simulation can be reduced.

The invention is applicable to the technical field of skin surgery, and provides a skin stretching fixer for skin surgery, which comprises a main frame body and a pair of movable frames, the lower ends of the pair of movable frames are provided with a plurality of chutes, electromagnets are slidably mounted in the plurality of chutes, the lower ends of the plurality of electromagnets are provided with adhesive surfaces, and the adhesive surfaces are connected with the main frame body. The movable adjusting mechanism is mounted between the main frame body and the pair of movable frames; the movable adjusting clamping mechanism is mounted at the lower end of the main frame body; and the controller is used for receiving the distraction and fixation requirements and performing distraction and fixation control on the multiple electromagnets in the whole operation process. The device can be suitable for approaching traction of incision skin after a skin surgical operation, is suitable for outward traction of the incision skin in the operation, and can control the whole process of the operation on a plurality of electromagnets according to different incision lengths and stretching shapes in the operation, so that corresponding stretching fixing adjustment is realized; and the universality of the skin stretching fixator is effectively improved.