24 results about "Motion accuracy" patented technology

This invention relates to the field of vacuum transmission and sealing technology, specifically a multi-degree-of-freedom manipulator that penetrates the wall of a vacuum chamber, comprising a base flange, a linear drive rod, a welded bellows, a first coupling, and a second coupling. The base flange is installed on the outer wall of the vacuum chamber; the linear drive rod extends into the vacuum chamber through the base flange; the welded bellows is sleeved around the linear drive rod, with its fixed end sealed to the base flange; the first coupling is sealed and fitted around the outer circumference of the linear drive rod; the second coupling radially moves with the first coupling and is sealed to the moving end of the welded bellows, with its inner diameter larger than the diameter of the linear drive rod, forming a radial clearance. This invention eliminates the radial runout of the welded bellows through the radially moving fit between the first and second couplings, preventing it from interfering with the motion accuracy of the linear drive rod and simultaneously improving the fatigue life of the bellows.

This utility model discloses a multi-degree-of-freedom motion platform and optical detection system, comprising: a base; a first moving component, which includes a first support platform, a first linear module, and a first air-bearing structure, wherein the first linear module is drivenly connected to the first support platform, and the first air-bearing structure blows air toward the base to create a gap between the first support platform and the base; and a second moving component, which includes a second support platform, a second linear module, and a second air-bearing structure, wherein the second linear module is mounted on the first support platform and drivenly connected to the second support platform, and the second air-bearing structure blows air toward the first support platform to form an air film between the first support platform and the second support platform. This utility model improves the motion accuracy and speed of the device by reducing the weight borne by the first linear module through the first air-bearing structure blowing air toward the base.

This disclosure relates to improvements in adaptive motion vector difference resolution in intra-block copy mode. A method for video processing includes: determining an allowable set of motion precisions for motion information during a conversion between a current video block and a bitstream representation of the current video block, wherein the current video block is encoded in intra-block copy (IBC) mode, wherein the motion information includes at least one of motion vectors, motion vector predictions, and motion vector differences; and performing the conversion based on the determined set of motion precisions.

This invention relates to a humanoid robot, specifically a parallel rotating mechanical joint based on a ring-shaped guide rail, mimicking the rotation of a human neck. The aim is to provide a parallel rotating mechanical joint based on a ring-shaped guide rail to achieve three degrees of freedom in the movement of a biomimetic human neck joint while ensuring high rigidity and motion accuracy. Furthermore, the joint features a simplified structure, good support performance, and sufficient movement space for the neck joint. The technical solution is a parallel rotating mechanical joint based on a ring-shaped guide rail, characterized by: a head motion platform, a neck ring-shaped guide rail base, and three PSS (Personal Stability Support) link branches connected in parallel between the head motion platform and the neck ring-shaped guide rail base; the center of the head motion platform and the center of the neck ring-shaped guide rail base are connected by a composite rotating shaft.

The utility model relates to a kind of portal frame and machine tool, comprising: first crossbeam and reinforcing square tube, the cavity is formed in the first crossbeam inside, the first crossbeam extends horizontally, the reinforcing square tube extends longitudinally, the reinforcing square tube is inserted into first crossbeam longitudinally and is fixedly connected with first crossbeam.The first crossbeam of the utility model is divided into multiple segments by reinforcing square tube, the first crossbeam part of the lateral two sides of reinforcing square tube is different segment, the lateral two ends of segment are supported by support structure, and the lateral length of segment is shorter than first crossbeam, so the middle part of segment is more difficult to produce bending deformation due to external force or dead weight, the first crossbeam of multiple segments is also more difficult to produce deformation, and the movement accuracy of the drive mechanism installed on the first crossbeam is improved, and the machining accuracy of workpiece is finally improved.

The utility model provides a kind of driving device and silk screen printing equipment.Driving device includes pedestal and driving part, the driving part includes fixed portion connected to the pedestal, output portion is moved relative to the fixed portion, the driving device further includes cooling plate, the cooling plate is located between the fixed portion and the pedestal, and contact at least part of the pedestal and at least part of the fixed portion.In the utility model, cooling plate can take away the heat on driving part and pedestal, and cooling plate is located between pedestal and fixed portion, can block the heat transfer of driving part to pedestal, so that driving part can work in normal temperature range, and the heat generated by driving part also avoids affecting pedestal, leading to pedestal thermal deformation, thereby ensuring the stability and motion accuracy of driving device work.

This utility model relates to the field of wall flatness testing technology, and discloses a wall flatness testing device, including a base and four universal wheels. A fixed housing is located at the center of the upper surface of the base. A lead screw moving device is located at the center of the interior of the fixed housing. A moving block is threadedly connected to the center of the outer side of the lead screw moving device. A lubrication device is located at the center of the upper surface of each fixed housing. A moving housing is located at the center of the front end face of each moving block. A toothed belt is located at the center of the rear inner wall of each moving housing. A moving rod is slidably connected inside a sliding groove. A transmission wheel is located at the center of the rear end face of the moving rod. A fixed block is located at the center of the front end face of the moving rod. A flatness testing instrument is located at the center of the fixed block. In this utility model, the lubrication device enables efficient movement of the flatness testing instrument and increases the motion accuracy and stability of the device, thereby improving the lubrication effect.

This invention discloses a multi-axis planar motion platform suitable for vacuum environments, comprising: a vacuum chamber, a mounting top plate, an adjusting column, a motion stage, a support platform, a drive assembly, a secondary guide rail, a primary guide rail, and a primary slider. The vacuum chamber is a sealed cavity, with the mounting top plate positioned at the top inner side of the vacuum chamber. The support platform is a hollow square structure connected to the mounting top plate via the adjusting column. The motion stage and secondary guide rail are both located inside the support platform, while the drive assembly is located outside the support platform. The output end of the drive assembly is connected to the secondary guide rail, which extends horizontally through the inner side of the motion stage. Both ends of the secondary guide rail are connected to the primary slider, which slides on the primary guide rail. The primary guide rail is located at the edge of the support platform. Driven by the drive assembly, the secondary guide rail, primary slider, and primary guide rail cooperate to achieve relative sliding of the motion stage within the support platform along the X-axis or Y-axis. This invention has the advantages of compact structure, simple operation, and high motion accuracy.

The utility model provides a kind of overhaul operation platform for wisdom water affairs, including chassis, the lifting assembly is equipped on the chassis, the adjusting assembly is equipped on the lifting assembly, a pair of limiting assembly is equipped on the chassis;The utility model is used as a kind of overhaul operation platform for wisdom water affairs, through lifting assembly, first motor drives worm gear transmission pair, power is transmitted to lifting rack by rotating shaft and rotating gear, finally realize the stable vertical movement of lifting plate.It is advantageous to utilize the self-locking characteristic of worm gear mechanism to ensure that the lifting plate is reliably locked at any height position, effectively preventing accidental sinking during maintenance process;Multi-stage transmission structure has both force amplification effect and motion accuracy, making the height adjustment process stable and controllable, providing the best working height in line with ergonomics for operators, significantly reducing labor intensity and improving the safety and convenience of maintenance operations.

The application discloses a kind of foot type robot body posture control method, the application is assumed that foot type robot body is rigid under the premise, the deformation energy of foot type robot branch leg and the calculation formula of deformation amount of branch leg end are given, then considering the constraint of foot type robot deformation coordination equation and balance equation, the overall stiffness matrix of foot type robot calculated offline is obtained, then in real-time control process, the body center posture requirement of task planning is combined, the pose parameters of branch leg are calculated, so as to complete the posture control of foot type robot body.The method provided by the application adopts analytical method, establishes the functional relationship between body posture and branch leg posture, in the process of controlling the posture of foot type robot body, the real-time calculation amount is small, the operation speed is fast, and the motion accuracy and dynamic performance of the quadruped robot can be effectively improved.

This invention belongs to the field of automated assembly technology, and specifically relates to a semi-automatic tightening device for confined spaces. It includes a power source lifting system, an upper tooling horizontal feed system, an upper tooling lifting system, an upper tooling indexing and positioning system, a tightening central system, and a bottom support system. The power source lifting system, upper tooling horizontal feed system, upper tooling lifting system, and upper tooling indexing and positioning system are connected sequentially from top to bottom. The tightening central system is connected to the upper tooling lifting system, and the bottom support system is connected to the bottom of the tightening central system. The power source lifting system is used to complete the docking action of the tightening power source, the tightening central system is used to complete the tightening power output, and the bottom support system is used to assist the tightening central system in providing radial support. This invention features a high degree of automation and high motion precision, avoiding human error and ensuring consistent tightening of all nuts.

This invention discloses a method for collaborative operation control between a quadruped robot arm and target equipment in cable tunnels, belonging to the field of intelligent control technology. The method includes: after the quadruped robot enters the work area, it executes preset tasks through its robotic arm and collects motion accuracy, interaction force, and temporal operation data, which are then normalized and labeled to form a dataset; statistical and temporal features of the dataset are extracted and concatenated into a task feature sequence according to the task execution order; this sequence is input into a task prediction model, and when the robot executes the final stage of the current task group, the model outputs the prediction result for the initial stage of the next task group. Based on the prediction results, collaborative control instructions for motion accuracy and interaction force are generated, and instruction scheduling is performed through a cache queue combined with a deviation threshold mechanism to ensure that instructions are injected and executed in an orderly manner when the system is stable. This invention achieves advanced prediction and smooth control of task execution, improving the continuity, adaptability, and reliability of robot operations.

The application belongs to the technical field of driving equipment, and particularly relates to a driving foot for a chip processing device, a control system thereof, a motion platform and a POB light machine, which comprises: a first driving part and a second driving part arranged oppositely; a first driven part and a second driven part arranged oppositely; a micro-drive piezoelectric motor, which drives the first driving part and the second driving part to open and close symmetrically about a reference plane between the first driving part and the second driving part; a transmission part is arranged between the first driving part, the second driving part and the first driven part and the second driven part respectively; a first mounting seat is arranged at one end of the first driven part, and a second mounting seat is arranged at a far end of the second driven part. The symmetrical transmission structure provided by the application fundamentally eliminates the deflection error caused by asymmetric stress, and ensures the motion accuracy of hundreds of nanometers. Meanwhile, the micro-drive piezoelectric motor is used as a driving element, and the output displacement of the driving foot is greatly improved on the premise that the required accuracy is still achieved at the output end.

This invention discloses a dual-piezoelectric tube driven inertial motor and its control method, along with a scanning probe microscope, relating to the field of piezoelectric tube technology. The invention includes a base, a first piezoelectric tube, a second piezoelectric tube, and a U-shaped sliding body. The first and second piezoelectric tubes are parallel to each other along their axes, with one end fixed to the base and the other end free. The two parallel arms of the U-shaped sliding body, referred to as the left and right sliding rods, are elastically connected via a junction at the bottom of the U-shaped sliding body. The left and right sliding rods are coaxially inserted into the inner walls of the first and second piezoelectric tubes, respectively. This invention not only ensures that the two sliding rods consistently and stably abut against the inner cavities of their respective piezoelectric tubes, guaranteeing effective transmission of driving force, but also improves the overall mechanism's motion accuracy, load-bearing capacity, and anti-interference capability through the coordinated and alternating operation of the dual-drive piezoelectric tubes, laying a structural foundation for achieving high-precision and high-stability stepping motion.

The application relates to the field of biological gene detection equipment, in particular to a motion platform suitable for large-stroke high-frequency motion and a use method thereof, which comprises a base, a flexible hinge, a motion connecting plate, a cross roller guide, a motor and a counterweight cylinder. The motor drives the motion connecting plate to move along the Z-axis direction for large-stroke motion or high-frequency motion. When the motion connecting plate moves for large-stroke motion, the flexible hinge guides the motion of the motion connecting plate; when the motion connecting plate moves for high-frequency motion, the cross roller guide guides the motion of the motion connecting plate, so that the motion precision is improved. The counterweight cylinder offsets the load gravity, so that the driving force of the motor is reduced, mechanical vibration is reduced, motion stability is improved, and the service life of the equipment is prolonged.

This invention discloses a method for detecting the motion accuracy of an exposure machine, belonging to the technical field of exposure machine technology. The method includes controlling an etching component to etch a first test pattern onto a test workpiece, and controlling the etching component to etch a second test pattern around the first test pattern onto the test workpiece; controlling a vision component to acquire the center coordinates of the first and second test patterns respectively; determining the error between the center coordinates based on the center coordinates of the first and second test patterns, and determining the motion accuracy based on the error. This invention also discloses an exposure machine capable of implementing the above method. This invention can detect the motion accuracy of the motion components of an exposure machine, facilitating subsequent adjustments and compensation, thereby improving the exposure accuracy of the exposure machine.

The application discloses a kind of machine dog joint gap online compensation method and system, it is related to machine dog joint control technical field.A kind of machine dog joint gap online compensation system, including have: machine dog movement monitoring module and machine dog movement compensation module.The application obtains joint dynamics information and foot end dynamics information by dynamic, can real-time monitoring machine dog in complex environment Motion state, to provide accurate basis for subsequent compensation;By dynamics topological decoupling to machine dog, complex multi-joint system is decomposed into multiple independent joint control unit, improve control accuracy and response speed, make system more stable under different load conditions;By real-time distinguishing joint is in clearance stagnation period or rigid engagement period, can dynamically adjust compensation strategy, different compensation measures are taken for different motion state, to significantly improve motion accuracy and stability.

This utility model discloses a sliding gap elimination structure, belonging to the technical field of sliding gap elimination. It includes a fixed component, a sliding component, a first wedge, a second wedge, and a first elastic component. The sliding component is slidably mounted on the fixed component. The sliding component has a mounting groove facing the fixed component. One end of the first wedge has a first stop edge, and the other end has a second stop edge. A first wedge surface is provided in the middle of the first wedge. The second wedge is movably mounted in the mounting groove and has a second wedge surface. The first wedge surface can tightly fit with the second wedge surface. The first elastic component is installed between the second wedge and the second stop edge, allowing the second wedge surface to fit against the first wedge surface. A limiting edge is provided in the mounting groove, which abuts against the first stop edge. This solves the technical problem of gaps between the slider and the fixed slide rail in traditional linear motion modules, causing reduced motion accuracy, stability, and service life.

This invention provides a device for quantitatively measuring the depth of surface defects on underwater bridges. In this device, a brushless DC motor drives a probe rod for axial movement. A first and second bearing housing improve the motion accuracy and stability of the probe rod. The control unit acquires the operating parameters of the brushless DC motor through a current sensor, a speed sensor, and an absolute angle encoder, thus obtaining the motion state of the probe rod. The moving auxiliary components include a handheld part for moving the device to the detection point on the bridge surface. A ring arm assembly and a curved auxiliary wheel assembly enable a reference detection distance between the device and the bridge surface, facilitating movement of the device on the bridge surface for multi-point detection. This device utilizes the principle of mechanical tactile sensing, allowing for high-precision blind measurement of crack depth on bridge pier surfaces without the need for light or clear water. Its compact structure makes it suitable for narrow spaces such as inside bridge caissons and between pile groups, providing crucial data support for bridge maintenance decisions.

The utility model discloses an underwater exploration type robot joint module, specifically related to underwater robot technical field, including module casing, the inside of module casing has carefully set motor shell, has reserved preset containing cavity in the motor shell inside, is used for placing drive motor, and the motor shell is closely covered in the outside of drive motor, has set up the speed reducer on the one side of motor shell, the one side of speed reducer is installed with temperature sensor, the other side of temperature sensor is provided with control panel, through underwater exploration type robot joint module, all have remarkable advantage in structural design aspect, can better satisfy the high demand of underwater exploration operation to robot joint module, and joint module also has to improve in compactness and motion accuracy, and the complex structure not only increases the volume and weight of robot, reduces the flexibility and accuracy of movement.

The application discloses a guide rail pair precision measuring instrument, which comprises a bed body, a clamping and positioning mechanism, a motion precision measuring mechanism, a comprehensive precision measuring mechanism and a guide rail dragging force measuring mechanism. The clamping and positioning mechanism is fixedly arranged on the upper two side ends of the bed body and used for positioning and fixing the guide rail to be measured. The motion precision measuring mechanism is fixedly arranged on the guide rail slider to be measured which is matched with the guide rail to be measured. The motion precision measuring mechanism is provided with a displacement sensor which is in contact with the reference surface of the guide rail to be measured and used for detecting the motion precision of the guide rail to be measured. The comprehensive precision measuring mechanism is fixedly arranged on the clamping and positioning mechanism. The two sides and the upper part of the comprehensive measuring mechanism are provided with a plurality of measuring sensors which are used for detecting the comprehensive precision of the guide rail pair. The guide rail dragging force measuring mechanism is arranged on the guide rail slider to be measured. The guide rail pair precision measuring instrument effectively improves the operation efficiency of the guide rail pair precision measurement, is especially suitable for rapid and full-item quality inspection on a production line, and greatly shortens the detection period.

This invention relates to a method, system, device, and storage medium for modeling dynamic geometric errors of a mold clamping mechanism. The modeling method disclosed in this invention includes the following steps: identifying key geometric and stiffness features of the mold clamping mechanism; solving for the initial static error of the moving template based on the key geometric features; using a parametric virtual prototype, taking the initial static error as the initial geometric pose of the moving template, and introducing a nonlinear contact force model and an equivalent stiffness model to construct a parametric multibody dynamics model; calculating and extracting dynamic error and mold clamping force data based on the parametric multibody dynamics model, and constructing a collaborative explicit function model of dynamic error and mold clamping force. Compared with existing technologies, the advantages of this invention are: it can evaluate the impact of nonlinear dynamic effects induced by the clearance of the kinematic pairs on error analysis, and perform collaborative analysis of motion accuracy and mechanical performance, quantifying the geometric error of the mold clamping mechanism under high-speed operation and mold-locking conditions.

The application discloses a parameter optimization configuration method of a heavy-load three-coordinate numerical control positioner, belongs to the technical field of aerospace tooling equipment, and is used for solving the problems of scattered parameter selection of an existing positioner, easy parameter redundancy, and deformation out of tolerance under heavy load. The scheme constructs a closed-loop optimization process including basic motion parameter threshold determination, multi-dimensional verification of a three-shaft ball screw transmission system, configuration of a roller linear rail and a hard rail combined structure, servo drive system matching, and finite element whole machine deformation verification. Differentiated load calculation and verification rules are set for two types of positioners, namely, a straight column type and a cantilever type. The method can realize the collaborative adaptation of the load bearing capacity, motion accuracy and structural rigidity of the positioner, greatly shortens the design cycle, reduces the iteration cost, meets the application requirements of high-precision pose adjustment of aerospace large components, bears well, scientifically distributes stress, has high stability, has a large safety factor, and has strong overload capacity and impact resistance.