210 results about "Constant force" patented technology

The invention discloses a constant-force vibration reduction mechanism and a robot, and belongs to the technical field of specialized robots, the constant-force vibration reduction mechanism comprises at least two vibration reduction units arranged on a base and a plurality of driving wheels consistent with the vibration reduction units; the vibration reduction unit comprises a rotating support and a constant force component. The rotating bracket is rotatably connected with the base; the rotating bracket is respectively connected with the driving wheel and the constant force component; the constant force component is used for applying counter-acting force to the base, and it is guaranteed that the base and an upper structure of the base are kept stable in the vertical direction in the moving process. According to the constant-force vibration reduction mechanism and the robot, the problems that in the prior art, a vibration reduction mechanism cannot completely avoid vibration generated by a wheel type moving device in the vertical direction when the wheel type moving device moves on an uneven road surface, and consequently bolt looseness, wire harness interface looseness, material fatigue strain and the like occur can be effectively solved; and therefore, the wheel type moving device has a fault in the operation process and cannot stably operate, and the like.

The invention discloses a mechanical arm self-adaptive variable impedance constant force control system which comprises an inverse kinematics unit, a fractional order active disturbance rejection controller unit, a mechanical arm and a self-adaptive variable impedance controller unit, and the input of the system is a tail end expected position and expected contact force. According to the method, the force overshoot is remarkably reduced, the steady-state error approaches zero, and the force tracking precision and robustness are improved.

The invention is suitable for the technical field of grinding, and provides an electric drive intelligent constant force radial compensation system which comprises an intelligent electric radial floating grinding device, the intelligent electric radial floating grinding device comprises a dust cover and a linear motor in the dust cover, and the linear motor is composed of a motor stator and a motor rotor. A grinding tool is arranged at the output end of the linear motor, a fixing base is installed on one side of the linear motor, a cone swinging device and an adjusting ring are installed on the fixing base, and the grinding tool and the cone swinging device are sealed in a labyrinth mode and provided with a labyrinth sealing outer ring and a labyrinth sealing inner ring. According to the scheme, the stability of driving force is improved, the mechanism design is optimized, the response speed for responding to external force changes and sealing are achieved, meanwhile, the influence on output torque is reduced to the minimum, the yield of high-precision polishing can be greatly improved, the polishing technological process is simplified, and the polishing efficiency is improved.

The invention discloses a self-adaptive constant-force buffering mechanism and a robot, and belongs to the technical field of specialized robots, the self-adaptive constant-force buffering mechanism comprises at least two buffering units arranged on a base and a plurality of driving wheels consistent with the buffering units; the plurality of driving wheels are respectively connected with the base through the buffer units; the buffer unit is used for applying counter-acting force to the base to counteract the gravity of the base and the upper structure of the base, and it is guaranteed that the base and the upper structure of the base are kept stable in the vertical direction in the moving process; the buffer unit comprises a horizontal buffer structure, a vertical buffer structure and a support. According to the self-adaptive constant-force buffering mechanism and the robot, the problems that in the prior art, a damping mechanism cannot completely avoid vibration generated by a wheel type moving device in the vertical direction when the wheel type moving device moves on an uneven road surface, and consequently bolt looseness, wire harness interface looseness, material fatigue strain and the like occur can be effectively solved; and therefore, the wheel type moving device has a fault in the operation process and cannot stably operate, and the like.

The invention belongs to the technical field of cable detection, and particularly discloses a cable insulation performance detection device which comprises two annular frames which are symmetrically and fixedly arranged at intervals. The rotating rings are arranged on the two ring frames respectively; the translation sliding table is connected between the two rotating rings; the clamping mechanisms are arranged on the ring frames and are symmetrical up and down along the axis; the dynamic bending applying mechanism is arranged on the translation sliding table; wherein one clamping mechanism is provided with a constant force straightening mechanism used for applying constant pulling force to the cable. A controllable and dynamic bending stress is applied to a to-be-detected cable under constant axial tension through a radial force application assembly capable of moving in the axial direction and the circumferential direction of the cable, and potential defects such as microcracks or interface stripping in an insulating layer which is physically compacted and covered can be actively exposed and excited through the scheme; therefore, 360-degree multi-plane and axial omnibearing stress loading detection of the cable in the circumferential direction is realized.

The invention discloses a flexible manipulator with variable clamping force and constant-force rubbing and a using method thereof, and belongs to the technical field of micromanipulators, the flexible manipulator comprises a first driving mechanism, a second driving mechanism, a variable-rigidity clamping mechanism and a constant-force rubbing mechanism, the variable-rigidity clamping mechanism is formed by connecting a guide beam assembly, a variable-rigidity beam assembly and a decoupling beam assembly in series, and the constant-force rubbing mechanism is connected with the first driving mechanism. A first clamping end is arranged at the tail end, the rigidity of the constant force rubbing mechanism can be adjusted through embedded shape memory alloy, the constant force rubbing mechanism is composed of a positive rigidity structure and a negative rigidity structure, a second clamping end opposite to the first clamping end is arranged at the tail end, and the two mechanisms are connected through the decoupling beam assembly to achieve structural decoupling. The problems that an existing flexible manipulator is non-adjustable in clamping rigidity, slow in constant force response and mutual in function interference are solved, and self-adaptive grabbing and stable rubbing of micro-scale objects are achieved.

The application discloses a sample transmission device for transmitting a sample in a cavity of a semiconductor device, comprising: a conveying table for placing the sample; a conveying rod for pushing and pulling the conveying table to transmit the sample in the cavity; and a constant force assembly, one end of the constant force assembly being connected to the conveying rod, the constant force assembly applying a constant pulling force to the conveying rod. The application also discloses a semiconductor device, comprising: a cavity and the sample transmission device. In the sample transmission device and the semiconductor device provided by the application, the constant force assembly is used to provide a constant pulling force to the conveying rod, thereby effectively preventing the stationary conveying rod and the conveying table from sliding, and effectively eliminating the hidden danger that the conveying table collides due to the sliding of the conveying rod.

The invention discloses steel plate surface defect detection equipment, and belongs to the technical field of steel plate detection, the steel plate surface defect detection equipment comprises a main body mechanism for guiding a steel plate, and the main body mechanism is provided with a conveying mechanism for conveying the steel plate and a detection mechanism for carrying out surface defect detection on the steel plate; according to a linkage structure of the lifting walking frame driven by the bottom electric cylinder and the detection mechanism, after a steel plate is in place, the bottom electric cylinder shrinks to enable the lifting walking frame to descend, and the descending action is converted into upward thrust of the lower rotating wheel to the lifting cross rod through a connecting rod mechanism composed of the upper rotating wheel, the short transmission frame and the long rotating frame; in the process, the descending action of the steel plate and the ascending action of the rotating probe at the bottom are precisely coupled, so that the steel plate is clamped between the eddy current detector at the top and the rotating probe at the bottom, and flexible and constant-force pressing on the upper surface and the lower surface of the steel plate is achieved through the pressing support and the pressing spring. And tight attachment of the steel plate and the detection probe is ensured.

The invention discloses a force-position coupling control method and system for a magnetic-pneumatic suspension servo device, and relates to the technical field of ground microgravity experiments of space mechanisms. After the sling inclination angle detection device is used for detecting the angle of the sling deviating from the numerical direction, the position following controller drives the omni-directional wheel to conduct position correction based on deflection angle feedback, meanwhile, the constant force compensation controller drives the constant force compensation motor to conduct tension adjustment through the deflection angle feedback and tension feedback, and therefore higher-precision gravity unloading is achieved.

The invention relates to a constant-force linear elastic device which comprises a base provided with a guide groove; one end of the elastic component is connected with the base; the sliding mechanism is connected with the other end of the elastic component and can move in the guide groove; restraining force exists between the guide groove and the sliding mechanism and is set to offset part of first elastic force, so that the output elastic force of the sliding mechanism is kept at a preset constant value and is unchanged in direction, and the first elastic force is the elastic force output by the elastic component to the sliding mechanism. The guide groove is matched with the sliding mechanism, the side wall of the guide groove limits the moving direction of the sliding mechanism, so that the restraining force is generated, and the direction and the magnitude of the restraining force can dynamically change according to the position of the sliding mechanism in the guide groove and the magnitude of the elastic force of the spring. The constraining force can offset part of the first elastic force, and the final output elastic force is kept at a preset constant value and is unchanged in direction, so that the effect of constant force output is achieved, and the requirements of force balance and other scenes for constant elastic force are met.

The utility model discloses a self-adaptive force stabilizing device for characterizing a mechanoluminescence cycle process, and belongs to the technical field of material testing. According to the device, collaborative operation is achieved through a reciprocating testing mechanism and a force loading mechanism which are in linkage design; the reciprocating testing mechanism drives a lead screw transmission assembly through a servo motor to drive a single-axis moving platform, a pressure digital display and a material to achieve reciprocating friction in the y-axis direction; the force loading mechanism pulls a sliding platform to slide on a sliding rail through a spring, a round-bottom quartz tube is arranged at the end of the force loading mechanism and is in point contact with a sample of a pressure digital display accessory, and when the sample is slightly abraded to cause position change, the spring dynamically compensates pressure loss to ensure that force loading in the x-axis direction is constant. An optical fiber is integrated in the round-bottom quartz tube to synchronously collect mechanoluminescence signals. The device solves the problem of force attenuation in the existing cycle test, and is beneficial to systematic research on the cycle characteristics of the mechanoluminescent material.

The application discloses a high-speed current-carrying friction in-situ test system and relates to the technical field of precision instruments, which comprises a macro-micro power loading module, a constant force loading module, a current loading module, a force monitoring module and an in-situ detection module. The macro-micro power loading module controls the relative motion of the friction pair to be tested. The current loading module is used for loading current between friction amplitudes. The in-situ monitoring module comprises three in-situ monitoring means, namely acoustic emission, infrared thermal imaging and a high-speed camera. The application can support the test of high-speed current-carrying friction conditions such as multi-angle and multi-posture macro-micro-motion-static coupling, and can simultaneously acquire time sequence information of temperature fields, optics, acoustics and vibration, and further acquire time sequence information of thermal energy, arc intensity, adhesive wear degree, fatigue wear degree and deformation energy of the friction pair, which helps to deeply understand the failure mechanism and modification mechanism of high-speed multi-condition current-carrying friction amplitude and accelerates the optimization work of the current-carrying friction performance of the current-carrying friction pair.

This invention relates to the field of robot intelligent control and precision operation technology, and discloses a charging gun insertion positioning and error correction method and device based on a robotic arm. The method guides the charging gun into the target charging port based on constant force control. When edge contact jamming occurs, the constant force is maintained, and a six-dimensional force sensor is used to collect force and torque information in real time. By establishing three spatial coordinate systems at the end of the robotic arm, spatial transformation and decoupling analysis of force and torque are performed. Using the constraint that the z-direction of the charging gun end plane is zero, the actual contact position of the charging port relative to the charging gun end plane is calculated, obtaining the jamming correction vector. The jamming correction vector is transformed into a coordinate system based on the end of the robotic arm to obtain the target movement vector. The robotic arm is then controlled to move along this direction, achieving precise error correction and smooth insertion. This invention can accurately identify the jamming point location, achieve directional correction, and improve the charging gun insertion success rate.

The invention relates to a flat plate gyroscope bracket and a weight-reducing bearing method thereof. The flat plate gyroscope bracket comprises a flat plate clamping frame and a constant force bearing mechanism for outputting basically constant bearing force to the flat plate clamping frame, the flat plate clamping frame comprises a support body and a connecting base used for being connected with the constant force bearing mechanism. Hand supports are respectively arranged on two sides of the bottom of the bracket body; the connecting base is arranged on the back of the support body and used for forming a first fulcrum for supporting the support body. The hand supports on the two sides are used for allowing the palm edges of a user to abut against to form auxiliary supporting points relative to the first supporting points. When the constant force bearing mechanism outputs bearing force to the flat plate clamping frame, the hand support is configured to be capable of receiving abutting force of the edge of the palm to be matched with the first fulcrum so as to balance overturning torque generated by the support body. According to the tablet gyroscope bracket, the bearing force applied by a user is constant, and a dynamic balance system is constructed, so that the edge of a palm can counteract the overturning force of tablet equipment, and the game experience is improved.

The invention relates to the technical field of aircraft structure design, in particular to a structure connecting device capable of unilaterally operating and fixing force and a mounting method. The fixing base is of a flange structure, a stepped hole is formed in the fixing base, and the rod portion of the stepped bolt is of a stepped structure and sequentially comprises an interference fit area, a polished rod area, a thread area and a tail clamping area from the root to the tail. After the stepped bolt penetrates through the fixed base and the interference fit area to be in interference fit with the small end face of the stepped hole, the self-locking nut is installed in the thread area, a cotter pin hole is formed in the thread area, a cotter pin is arranged on the cotter pin hole to achieve positioning of the self-locking nut, and the tail clamping area is used for constant force clamping. The polished rod area is used for installing a single-lug connector, and the single-lug connector is used for being matched with a suspension connector of a spoiler to achieve installation of the spoiler. According to the invention, the problem of constant force connection in a narrow space or a scene without an operation space on one side is solved, and the reliability of the type of connection structure and the convenience of implementation and operation are remarkably improved.

The application discloses a constant force spring support hanger detection device, and belongs to the technical field of constant force spring support hangers. The device comprises a protective shell frame, a positioning mechanism arranged in the protective shell frame and used for restraining and limiting a constant force combined constant force spring support hanger to be detected, and a stretching mechanism arranged in the protective shell frame and used for performing elastic stretching detection on the limited support hanger. The stretching mechanism comprises a displacement frame arranged outside the protective shell frame and used for connecting a stretching end of the support hanger, and a driving assembly arranged outside the protective shell frame and used for driving the displacement frame to move so as to drive the support hanger to stretch. The transmission assembly in the positioning mechanism is used for connecting the jacking assembly and the pressing assembly, the whole positioning and fixing process is completed at one time, multiple independent driving mechanisms do not need to be operated respectively, the detection time is greatly shortened, the detection efficiency is improved, and the application demand of large-scale or rapid detection can be met.

The invention relates to the technical field of plastic leftover material recycling, and provides a plastic product processing leftover material recycling machine which comprises a recycling box and a first smashing roller. A second smashing roller is arranged on one side in the recycling box, a first smashing roller is arranged on one side of the second smashing roller, a material guide plate is installed at the bottom end of the recycling box, and automatic compensation structures are arranged at the two ends of the first smashing roller. By arranging the automatic compensation structure, when the rollers are abraded, the distance between the two rollers can be increased accordingly, at the moment, the constant-force coil spring in the pre-tightening state releases the contraction force of the constant-force coil spring to continuously pull the lead screw to rotate, the lead screw drives the screw sleeve to rotate, and at the moment, the screw sleeve drives the first crushing roller to move towards one side under the guiding effect of the guiding structure on one side; the gap amount generated by abrasion of the first crushing roller and the second crushing roller is accurately compensated, automatic abrasion compensation work is achieved, it is guaranteed that the crushing gap is always kept at the preset value, and then it is guaranteed that the crushing granularity is consistent for a long time.

The present disclosure relates to a device that can guide perpendicular drilling and simultaneously measure flatness of an insertion surface through a locking protrusion by rotating the device in bone conduction implantation. According to the present disclosure, it is possible to measure flatness and guide perpendicular boring with a constant force even without using a separate flatness measurer in surgery. Further, it is also possible to guide drilling using a spacer having a smaller diameter by using an assistant guide member.

The application is a kind of magnetic rheological damping flexible constant force polishing and vibration suppression mechanism, comprising: passive flexible component, fixed plate flange, quick connector, coil, insulating sheet, rubber cover plate, polishing head. Wherein the passive flexible component comprises: inner shell, outer shell, positive stiffness characteristic mechanism, negative stiffness characteristic mechanism, grid plate, the application is installed at the end of industrial robot to realize flexible polishing work, based on the characteristics of positive and negative stiffness characteristic mechanism to realize constant force polishing under certain position deviation, by changing the current size in the coil and then changing the viscosity of magnetic rheological fluid, and then changing the size of damping force, suppressing vibration and reducing force fluctuation, controlling the polishing force in the desired range, improving the stability of polishing force, not only ensuring to prevent workpiece, end effector and polishing environment from being damaged, but also improving the surface polishing quality of workpiece and improving production efficiency.

The utility model discloses a constant force support hanger for supporting a pipeline, which is applied to the technical field of constant force support hangers and comprises a shell, a hanger rod is slidably connected to the bottom of the shell in a penetrating manner, an arc-shaped sliding plate is bolted to the top of the hanger rod, and a first spring bolted with the arc-shaped sliding plate and the shell is sleeved on the surface of the hanger rod. And the bottom of the lifting rod is bolted with a pipeline seat. After the torque supported by the pipeline is kept balanced, the threaded rod is rotated to drive the first sliding plate and the second sliding plate to slide close to the first gear and be meshed with the first gear through the teeth. And therefore, the arc-shaped sliding plate is locked and fixed and cannot move up and down, and the stability of pipeline supporting and hoisting is guaranteed. The two trapezoid blocks and the abutting plate are driven to abut against the surface of the pipeline in a sliding mode according to the diameter of the pipeline. And therefore, various pipelines with different diameters can be conveniently supported and hoisted, and the practicability of the constant-force support hanger is improved.

The invention discloses an adjustable heavy-load constant force device which comprises a shell, an elastic assembly, a swing arm assembly, a constant force adjusting assembly, a tail end output plate and a steel wire rope. The elastic assembly is connected with the swing arm assembly through a steel wire rope, the elastic assembly is used for providing elastic force changing along with displacement of the output end and mainly comprises a guide mechanism and an adjusting mechanism, and the adjusting mechanism comprises an adjusting plate; the swing arm assembly mainly comprises a swing arm supporting seat, a connecting rod and a plastic-coated bearing; the tail end of the steel wire rope is fixedly connected with the movable end of the connecting rod; the constant force adjusting assembly comprises an installation base, a motor, a lead screw nut mechanism and a synchronous belt transmission mechanism, the position of an adjusting plate in the elastic assembly is changed through the transmission mechanism, and accurate adjustment of the output constant force can be achieved. The device has the advantages of being simple in structure, high in reliability, adjustable in output constant force and high in engineering applicability, and has wide application prospects.

The invention discloses a wiping module for a stone composition detector. The wiping module comprises a linear module, a wiping mechanism and a cleaning mechanism. The linear module drives the wiping mechanism and the sweeping mechanism to reciprocate; the wiping mechanism wipes the detection platform and the pressure head through a wiping belt, the wiping belt is driven by a driving motor to move circularly, and the tensioning force is adjusted through a tensioning wheel; the cleaning mechanism is used for cleaning the stone placing nest and the detection platform through a rotary cleaning part, the rotary cleaning part is driven by a cleaning motor and can move up and down along a plug screw, and stable pressure between the rotary cleaning part and a cleaning surface is ensured through a constant force pressure spring. According to the invention, the residual stone powder after detection is automatically, efficiently and thoroughly cleaned, and the detection efficiency and the automation level of the instrument are improved.

The application discloses a kind of equipment and method for robot automatic polishing processing blade tip fillet, and polishing tool module is installed at the end of robot module, worktable module is installed in the work radius range that robot end can reach in robot module, workpiece and fixture module are installed on worktable module;Control computer receives the force signal of polishing force acquisition module and outputs control instruction to robot module after processing to realize constant force polishing to workpiece and workpiece in fixture module;Clamp in workpiece and fixture module is clamped to workpiece by pneumatic device module;Pneumatic device module is also connected to polishing tool module, for the clamping of polishing wheel.The present application can realize the fillet machining of the small radius arc of blade complex curved surface workpiece, the size of arc radius and surface quality are controllable, high efficiency can also guarantee the stability and consistency of the appearance of the fillet after processing, and provide a good solution for the automatic machining of the small radius arc of blade tip fillet.

This application provides a grinding and polishing method based on three-dimensional vision guidance and variable stiffness force-resistance control, relating to the field of automatic control. The control equipment acquires the prior estimated stiffness of the workpiece at its current trajectory position as the initial control basis, ensuring uninterrupted grinding. It then dynamically corrects this prior estimated stiffness using real-time observed stiffness measured by a stiffness sensor, obtaining a real-time comprehensive stiffness that more closely approximates the actual contact state. Finally, based on this real-time comprehensive stiffness, the grinding force originally determined by the prior estimated stiffness is adjusted in real time. Thus, even under complex working conditions such as abrupt changes in surface curvature or material variations, the grinding force can still quickly and smoothly adapt to changes in environmental stiffness, significantly improving the real-time performance and stability of constant force grinding and polishing.

The invention relates to the technical field of civil engineering construction, and discloses a device for detecting the position of a reinforcing steel bar in reinforced concrete construction, which comprises a plurality of templates for positioning the position of a reinforcing steel bar framework, each template is provided with a steel frame, a steel plate frame is arranged in the steel frame, one side of the steel plate frame is symmetrically provided with a guide shaft body, and the guide shaft bodies are arranged on the guide shaft bodies. The device for detecting the position of the reinforcing steel bar in the reinforced concrete construction has the advantages that the reinforcing steel bar framework and the reinforcing steel bar plate frame are used for limiting the reinforcing steel bar framework, the reinforcing steel bar plate frame is used for fixing the reinforcing steel bar framework, and the reinforcing steel bar plate frame is used for fixing the reinforcing steel bar framework; the situation that the position deviation is too large when the steel reinforcement framework is installed in an overall formwork entering mode is effectively avoided, and the position of the steel plate frame can be adjusted within a certain range through sliding connection of the steel plate frame and the steel frame; and damage caused by rigid contact between the reinforcement cage and the steel grillage or the steel frame in the hoisting process is avoided.

The invention provides an adjustable support. The adjustable support comprises a base, a force application part and a balance assembly, the balance assembly comprises a plurality of elastic parts and a transmission mechanism, the transmission mechanism is functionally coupled to the base and can move relative to the base, the elastic parts comprise the first elastic part and the second elastic part, and the force application part is used for applying force to the first elastic part. Each of the plurality of elastic pieces can apply a corresponding elastic acting force to the transmission mechanism; the force applying piece can apply load acting force to the transmission mechanism, and when the force applying piece is operated, the force applying piece or the elastic pieces drive the transmission mechanism to move to a target position; when the transmission mechanism is located at the target position, the elastic acting force and the load acting force are balanced, so that the transmission mechanism and the force application piece are in a stress balance state. The adjustable support can solve the problems that a constant force elastic assembly of an existing adjustable support is large in size, large in occupied space and high in cost.

The application discloses a main shaft polishing device for generator set maintenance, and belongs to the technical field of main shaft polishing.The main shaft polishing device for generator set maintenance comprises a support frame, a plurality of rectangularly and symmetrically arranged sliding grooves are formed in the top of the support frame, the sliding grooves are arranged in an open state away from the inner side of the support frame, a rack is slidably connected to the support frame and located in the sliding groove, the rack is limited by the support frame, a lifting gear is transmissionally connected to one side of the rack, the lifting gear is rotationally connected with the support frame, two lifting gears located on one side of the support frame are fixedly connected with a connecting rod, and the connecting rod is rotationally connected with the support frame.The polishing plate with constant clamping force is in contact with the surface of the rotating main shaft by adopting the constant force polishing assembly and the rotating support assembly, even polishing is realized, excessive heat concentration can be effectively avoided, and the hardening or cracking of the surface of the main shaft due to local high temperature can be prevented.

The application discloses a constant force floating device, a control system and a method for realizing force-position hybrid compliant control, and relates to the technical field of constant force floating sensors. The constant force floating device comprises a flange end quick change mechanism connected with a mechanical arm and an end quick change mechanism connected with an execution end. A force sensor is arranged on a sensor mechanism. A constant force spring is arranged on a constant force spring fixing plate, and a spring pull rod is arranged on a constant force floating connecting plate. When the end quick change mechanism is subjected to pressure, the spring pull rod moves along the force direction, drives the organ pipe to contract, and realizes constant force contact between the execution end and a contact object under the action of the constant force spring. When the moving distance of the spring pull rod reaches the limit, the force sensor is triggered, and then the mechanical arm is triggered to move. Under the joint action of the mechanical arm and the constant force spring, the execution end and the contact object are in constant force contact. The constant force floating device is a pure mechanical structure, is simpler in structure, lower in cost, lighter in weight and more convenient to control than a pneumatic floating device.

This utility model relates to the field of valve technology, and more particularly to an ultra-high pressure shut-off valve. The utility model includes a test flange and a valve body. A connecting pipe is mounted on the top of the test flange, a lens gasket is mounted between the test flange and the connecting pipe, a valve seat sleeve is mounted above the connecting pipe, a guide bushing is mounted on the inner side of the valve body, a valve stem is slidably connected to the inner side of the guide bushing, and a packing sleeve is fixed to the inner side of the valve body. A packing assembly is located at the bottom end of the packing sleeve. This utility model provides an ultra-high pressure shut-off valve that uses a hydraulic cylinder as a power source to generate a thrust of 630 kN under 16 MPa hydraulic pressure, which is transmitted to the gland nut through a connecting disc and an elastic pin. The gland nut is connected to the guide bushing via a bracket, forming a rigid transmission chain that drives the valve stem to move linearly. This design utilizes the constant force characteristics of the hydraulic system to ensure stable opening and closing of the valve stem under high-pressure fluid conditions.

The invention relates to the technical field of servo constant force control systems, in particular to a high-precision pressure control system which comprises a control unit, a driving unit, a servo motor, a force transmission unit and a force detection unit. The control unit generates a control instruction based on a preset deceleration force threshold value and an end point deceleration force threshold value according to the comparison result of the actual contact force fed back by the force detection unit and the deceleration force threshold value and the comparison result of the difference value of a preset target force set value and the actual contact force and the end point deceleration force threshold value. The driving unit responds to a control instruction and drives the servo motor to be switched among the idle stroke speed, the force application speed and the end point speed, so that impact, overshoot and oscillation on a workpiece are effectively avoided, and the stability of the force application process and the control precision of a final force value are remarkably improved.