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80 results about "Robot finger" patented technology

Three-axis gear and rack composite underactuated dual-joint robot finger device

The invention discloses a three-axis gear and rack composite underactuated dual-joint robot finger device, which belongs to the technical field of humanoid robot hands. The finger device comprises a base, a motor, a speed reducer, a base shaft, a juxta articular shaft, a middle finger section, a distal articular shaft, a tail end finger section, a multi-path gear driving mechanism and a spring. According to the device disclosed by the invention, the composite underactuated grabbing effect is comprehensively achieved by adopting a single motor, the multi-axis and multi-path gear driving mechanisms with different driving ratios, the spring and the like: fingers are coupled and rotatably grab an object and then self-adaptively grab the object; the finger device is humanized in the grabbing process, has skilful action, stability for grabbing the object, low requirement for a control system and easiness in operation and control and can be used for automatically and adaptively grabbing objects with different sizes and shapes; meanwhile, the finger device has the advantages of simple and compact structure, low energy loss, high driving efficiency, low cost, convenience in assembly and maintenance; and the finger device is similar to fingers of a person in appearance and is suitable for the humanoid robot hands.
Owner:WUXI RES INST OF APPLIED TECH TSINGHUA UNIV +1

Pinching-holding composite and adaptive robot finger device with seven connecting rods connected in parallel

InactiveCN105150231ALarge grabbing rangeSmall motion dead zoneGripping headsControl systemDrive shaft
The invention belongs to the technical field of robot hands and discloses a pinching-holding composite and adaptive robot finger device with seven connecting rods connected in parallel. The robot finger device comprises a driver, a base, two finger sections, four rods, six shafts, spring parts and limiting blocks. A proximal joint shaft and a first drive shaft are arranged in the base in a sleeved mode. A first rotating shaft is arranged on the first parallel rod in a sleeving mode. A second rotating shaft is arranged in the first finger section in a sleeved mode. A distal joint shaft and a second drive shaft are arranged in the second finger section in a sleeved mode. The first finger section and the first parallel rod are connected to the proximal joint shaft in a sleeving mode. The two ends of the driven rod are connected to the first rotating shaft and the distal joint shaft respectively in a sleeved mode. The two ends of the second parallel rod are connected to the distal joint shaft and the second rotating shaft respectively in a sleeved mode. The two ends of the drive rod are connected to a first drive shaft and a second drive shaft respectively in a sleeved mode. The robot finger device can grab articles in a pinching-holding composite and adaptive mode; the second finger section can pinch the articles in parallel or hold the articles adaptively; the distal joint shaft can be moved horizontally, so that the grabbing range is wide and the dead movement zone is small; the size is small, the appearance simulates the human, the structure is simple and reliable, and a sensing and controlling system is not needed.
Owner:TSINGHUA UNIV

Idle-stroke contact gear parallel clamping self-adaption robot finger device

InactiveCN105798936ASmall grab rangeReduce volumeGripping headsEngineeringArthrobotrys
The invention discloses an idle-stroke contact gear parallel clamping self-adaption robot finger device, and belongs to the technical field of robot hands. The device comprises a base, two finger sections, two joint shafts, a drive, a gear transmission mechanism, a convex block poking disc, a poking wheel, two spring pieces and a limiting convex block. The device uses the drive, the gear transmission mechanism, two spring pieces, the convex block poking disc, the limiting convex block, the poking wheel and the like for comprehensively realizing the functions of finger parallel clamping and self-adaption grabbing of a double-joint robot; as a section of idle stroke is between a transmission convex block on the poking wheel and a second convex block on the convex block poking disc, when the first finger section rotates, the second finger section keeps flat moving without rotating corresponding to the base to achieve the function of parallel clamping and grabbing; after a contacted object of the first finger section is stopped, the transmission convex block on the poking wheel can touch and poke the second convex block on the convex block poking disc to drive the first gear to rotate after a shorter period of time; and the second finger section is driven to rotate by transmission of the gear set and the second gear to achieve the self-adaption grabbing function.
Owner:TSINGHUA UNIV

Linear parallel clamping and self-adaption robot finger device with terminal accurately compensated

The invention provides a linear parallel clamping and self-adaption robot finger device with the terminal accurately compensated and belongs to the technical field of robot hands. The linear parallelclamping and self-adaption robot finger device comprises a base, two finger segments, two joint shafts, a motor, a plurality of connecting rods, an intermediate transmission mechanism, a T-shaped sliding groove part, gears, racks, a limiting block, a spring part and the like. According to the linear parallel clamping and self-adaption robot finger device with the terminal accurately compensated, the linear parallel clamping and self-adaption grabbing functions of robot fingers are achieved; when a near joint rotates, a second finger segment surface cover parallelly moves along a straight linerelative to the base; after the first finger segment makes contact with an object, the second finger segment surface cover is then rotated to make contact with the object; the purpose of enveloping objects in different shapes and sizes in a self-adaption mode is achieved; the grabbing scope is large, and grabbing is stable and reliable; the two joints are driven by one motor; and the linear parallel clamping and self-adaption robot finger device with the terminal accurately compensated is simple in structure, low in cost and suitable for robot hands.
Owner:TSINGHUA UNIV

A tactile sensor used for a robot

The invention relates to a tactile sensor for a robot. The main part of the sensor comprises a sensor shell, a rubber contact, a fixing device, a transmission rod, a testing coil, FeGa materials, a spring, a left permanent magnet, a right permanent magnet and a magnetizer, wherein the rubber contact is semispherical and is fixed on the right side of the upper surface of the sensor shell; the upper end of the transmission rod is embedded in the rubber contact; the lower end of the transmission rod vertically goes through the fixing device and the sensor shell to be connected with the FeGa materials. The left end of the FeGa materials is fixed on the inner wall of the left end of the sensor shell. The upper surface of the right end of the FeGa materials is connected to the upper end of the spring. The testing coil sleeves the middle portion of the FeGa materials. A magnetizer is laid on the internal bottom of the sensor shell. The left end and the right end of the magnetizer are respectively fixed with a left permanent magnet and a right permanent magnet. Pole heads of the two permanent magnets are disposed in a staggered mode. The tactile sensor of the invention can satisfy the requirement of the precision of tactile measurement by robot fingers.
Owner:HEBEI UNIV OF TECH

Robot finger device capable of switching between accurate flat clamping self-adoption mode and coupling self-adaption mode

A robot finger device capable of switching between an accurate flat clamping self-adoption mode and a coupling self-adaption mode and belongs to the technical field of robot fingers. The robot finger device comprises a base, two finger sections, two joint shafts, a motor, a tendon rope, a driven pulley, a connection piece, a rotary shaft, a fan-shaped wheel, a spherical segment piece, a gear, a rack, a spring and the like. According to the robot finger device, various grabbing modes such as flat clamping grabbing, coupling grabbing and self-adoption grabbing of the robot finger are achieved; by utilizing the ball surface of the spherical segment piece, stable switching between flat clamping and coupling is achieved; by installing the spherical segment piece, transmission precision between a flat clamping stage and a coupling stage is improved; the mechanism is simplified by utilizing the indirect self-adaption function of a gear rack mechanism; contradiction between the flat clamping or coupling state and the self-adaption state is avoided through cooperation of the tension degrees of the spring and the tendon rope; the grabbing range is large; two joints are driven through one single motor, and a complex sensing and controlling system is not needed; and the structure is simple, the size is small, and the cost is low.
Owner:TSINGHUA UNIV

Single-ring flexible piece parallel clamping self-adaption robot finger device

The invention discloses a single-ring flexible piece parallel clamping self-adaption robot finger device, and belongs to the technical field of robot hands. The device comprises a base, a first finger section, a second finger section, a near joint shaft, a far joint shaft, a drive, a first transmission wheel, a second transmission wheel, a flexible transmission piece, a convex block poking disc, a poking wheel, a transmission mechanism, a first spring piece, a second spring piece and a limiting convex block. The device uses the drive, the flexible piece transmission mechanism, two spring pieces, the convex block poking disc, the poking wheel, the limiting convex block and the like for realizing the finger functions of parallel clamping and self-adaption grabbing; the second finger section can flatly move to hold an object or outwards expand to support the object, or the first finger section and the second finger section can rotate in sequence to self-adaptively wrap objects with different shapes and sizes; and the device is wide in grabbing range and stable and reliable in grabbing, only uses one drive for driving two joints, needs no complex sensing and control systems, and is simple in structure, small in size, light in weight, low in machining, assembly and maintenance costs and suitable for the robot hands.
Owner:TSINGHUA UNIV

Three-degree-of-freedom surface movable robot finger unit device

The invention provides a three-degree-of-freedom surface-movable robot finger unit device, and belongs to the technical field of robot hands. The three-degree-of-freedom surface-movable robot finger unit device comprises two finger sections, four bevel gears, a left half shaft, a right half shaft, a left joint driver, a right joint driver, a left joint transmission mechanism, a right joint transmission mechanism, a longitudinal shaft, a longitudinal moving driver, a longitudinal moving transmission mechanism, a skin layer and the like. A joint double-degree-of-freedom orthogonal rotation function is fulfilled, namely the device can be bent around a joint shaft and rotate around the longitudinal shaft, and a surface longitudinal moving function is also fulfilled. The device is suitable to be mounted on a finger of a robot, functions of fingers of a humanoid robot are expanded, and in a movement process, adjacent fingers cannot intervene. The device is provided with a finger surface capable of moving multi-dimensionally, by surface movement, an object can relatively move or deform, the device is suitable for picking up objects, and is particularly suitable for picking up flat objects and deformable objects, and positions and postures of a grabbed object can be adjusted. The device is compact in structure, small in size, easy to control and suitable for being mounted on a hand of the robot.
Owner:TSINGHUA UNIV

Gear rack tail end approximate straight-line composite grabbing robot finger device

InactiveCN107598949AReduced programming requirementsCompact structureGripping headsRobot fingerSelf adaptive
The invention relates to a gear rack tail end approximate straight-line composite grabbing robot finger device and belongs to the technical field of robot hands. The gear rack tail end approximate straight-line composite grabbing robot finger device comprises a base, two finger sections, two joint shafts, a motor, a plurality of connecting rods, a gear, two racks, two springs, two limiting convexblocks and the like. The device realizes a straight-line flat clamping and self-adaptive composite grabbing mode, can flatly move the second finger section to clamp an object, and also can rotate thefirst finger section to touch the object and then rotate the second finger section to envelope the objects with different shapes and sizes; in the stage of flatly moving the second finger section to clamp the object, the tail end of the second finger section still maintains approximate straight-line track motion, so the gear rack tail end approximate straight-line composite grabbing robot finger device is suitable for grabbing flat plate objects on a workbench and reduces the mechanical arm programming requirements; and only one motor is used for driving two joints, so the gear rack tail end approximate straight-line composite grabbing robot finger device is simple and compact in structure and low in cost, does not need a complex sensing and control system, and is suitable for occasions that the robot needs to grab and operate the objects with different sizes.
Owner:TSINGHUA UNIV

Coupling self-adaptive robot finger device characterized in that tail end moves along straight line

The invention discloses a coupling self-adaptive robot finger device characterized in that the tail end moves along a straight line, and belongs to the technical field of robot hands. The coupling self-adaptive robot finger device comprises a base, a pedestal, a first finger section, a second finger section, a near joint shaft, a far joint shaft, a motor, three transmission mechanisms, two springparts, a cam, a push rod, a rolling wheel, a stroke increasing mechanism and a poking block. The coupling self-adaptive robot finger device can achieve coupling movement, achieves the effect of pinching an object, can also achieve self-adaptive movement, and achieves the effect of covering and holding objects with different shapes and different sizes. In the stage of coupling movement, the tail end of the second finger section moves along the straight line relative to the pedestal, the coupling self-adaptive robot finger device is suitable for pinching the object on a workbench in a coupling mode, the whole height of a robot hand does not need to be adjusted, the control difficulty of a mechanical arm is reduced, and the working efficiency is improved. The coupling self-adaptive robot finger device adopts an under-actuated move, two joints are driven by one driving device, and no complex sensing and control system is required. The coupling self-adaptive robot finger device is compact in structure, small in size and low in cost, and is suitable for the robot hand.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY

Gear-connecting bar driving parallel-clamping self-adaptive robot finger device

The invention discloses a gear-connecting bar driving parallel-clamping self-adaptive robot finger device and belongs to the technical field of robot hands. The gear-connecting bar driving parallel-clamping self-adaptive robot finger device comprises a base, two finger sections, two joint shafts, a driver, a plurality of gears, a plurality of connecting bars, a protruding block driving plate, a spring part, a limiting protruding block and the like. The device adopts the driver, a gear driving mechanism, a connecting bar driving mechanism, the spring part, the protruding block driving plate, the limiting protruding block and the like, the functions of parallel clamping and self-adaptive grabbing are achieved comprehensively; according to different target object shapes and positions, translational motion of the second finger section can be performed to nip objects or outward expansion of the second finger section is performed to support the objects; the first finger section and the second finger section can also be rotated in sequence to wrap the objects with different shapes and sizes; the device is wide in grabbing range; an underactuation mode is adopted, the driver is used for driving two joints, and a complicated sensing and control system is not needed; and the device is compact in structure, small in size, low in manufacturing and maintaining cost and applicable to the robot hands.
Owner:TSINGHUA UNIV

Four-rod four-wheel linear parallel clamping and self-adaption robot finger device

The invention discloses a four-rod four-wheel linear parallel clamping and self-adaption robot finger device, and belongs to the technical field of robot hands. The device comprises a base, two finger segments, a joint shaft, a motor, a plurality of connecting rods, a plurality of transmission wheels, two transmission parts, a driving moving wheel, a driven moving wheel, a limiting block, two spring parts and the like; through the device, functions of robot finger linear parallel clamping and self-adaptation grabbing can be achieved, the single motor is used for driving the two finger segments, and the underactuation effect is met; according to differences of object shapes and positions, automatic switching between the linear parallel clamping and self-adaptation modes can be achieved; according to the device, the second finger segment can be linearly moved in a parallel manner to clamp objects, good clamping of sheet parts on a worktable can be achieved, after the first finger segment makes contact with the object, the second finger segment can be automatically rotated to make contact with the object, and the holding effect with the large force can be obtained; the device can be automatically suitable for grabbing of the objects in the different shapes and with different sizes, the grabbing range is large, and stability and reliability are achieved.
Owner:TSINGHUA UNIV
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