42results about How to "Fast response to movement" patented technology

The invention relates to a decoupled three-rotation parallel mechanism, which comprises a base, a dynamic platform, a first moving branch chain, a second moving branch chain and a third moving branch chain, wherein the first, second and third moving branch chains are connected between the base and the dynamic platform; the first moving branch chain comprises a first universal hinge, a first rotating pair, a second rotating pair, a third rotating pair, a fourth rotating pair, a fifth rotating pair, a sixth rotating pair and a seventy rotating pair, which are connected in turn; the second moving chain comprises a tenth rotating pair, an eleventh rotating pair and a second rotating rod, which are connected in turn; and the third moving branch chain comprises a second universal hinge, a moving pair, a twelfth rotating pair and a thirteenth rotating pair, which are connected in turn, and one end of the twelfth rotating pair is connected with the seventh rotating pair through the dynamic rotating platform. In the invention, fewer moving pairs are adopted, the structure is simple, the installation is convenient, the rotation inertia is small, and the motion response is quick; and the motion decoupling and control are simple, so the development cost is reduced.

The invention relates to a decoupled three-rotational-degree-of-freedom parallel mechanism, which consists of a machine frame (1), a dynamic platform (3), a first motion branch chain (2a), a second motion branch chain (2b) and a third motion branch chain (2c), wherein the first motion branch chain (2a), the second motion branch chain (2b) and the third motion branch chain (2c) are fixedly connected between the machine frame (1) and the dynamic platform (3); and the axes of three rotation pairs of the first motion branch chain (2a) meet at the central point of the platform (3). As few motion pairs are used and all driving electric motors are arranged on the machine frame, the motion-decoupled spherical rotation parallel mechanism of the invention has the advantages of simple structure, convenient installation, small rotation inertia and quick motion response. In addition, the spherical rotation parallel mechanism of the invention has linear motion decoupling, easy calibration and simple control, thereby reducing development cost.

The invention provides a decoupling three-rotation parallel mechanism for an imaginary axis lathe and a robot, which comprises a static platform, a movable platform, a first movement branch chain, a second movement branch chain and a third movement branch chain, wherein the first movement branch chain, the second movement branch chain and the third movement branch chain are connected between the static platform and the movable platform; the first movement branch chain comprises a universal hinge, a movable pair, a first rotating pair, a first connecting rod and a second rotating pair which are sequentially connected; the second movement branch chain comprises a third rotating pair, a fourth rotating pair and a fifth rotating pair which are sequentially connected; and the third movement branch chain comprises a sixth rotating pair, a seventh rotating pair and a second connecting rod which are sequentially connected. The decoupling three-rotation parallel mechanism has three rotational freedom degrees of decoupling, which are linearly controlled by depending on the movable pairs of the branch chains only, and the decoupling three-rotation parallel mechanism is very simple in a realizing principle, and has a good linear relation.

The invention aims to provide an amorphous alloy electromagnetic control oil injector with a combined iron core. An amorphous alloy electromagnet assembly, a pilot ball valve seat, a control piston body and a needle valve ejector rod are installed in an oil injector body in sequence from top to bottom, a nozzle is fixedly arranged at the bottom of the oil injector body through a nozzle clamp nut, and a needle valve is installed in the nozzle. Compared with a conventional silicon steel sheet magnetic pole, the amorphous alloy electromagnetic control oil injector with the combined iron core has the advantage that the loss of the iron core is greatly reduced. In addition, due to the facts that a copper ring is arranged between an auxiliary magnetic pole and coils in the amorphous alloy electromagnet assembly, copper has good electrical conductivity, and the constantly-enhanced magnetic field can generate high induced current in the copper ring to delay the increase of the magnetic flux, the effective inductance of the coils in the working process is greatly reduced, the increase speed of the driving current of the coils is increased, the movement response of a valve rod is quickened, the response speed of the amorphous alloy electromagnetic control oil injector with the combined iron core can be conveniently increased, and the loss is reduced.

The invention relates to a two-rotation one-movement-freedom-degree decoupling parallel mechanism, which is composed of a rack (1), a moving platform (3) and two moving branch chains (2a), (2b) which connect the rack (1) and the moving platform (3), the axis of the sliding pair of the moving branch chain (2a) is vertical to the axis of a rotation pair which is parallel to three axes of the movingbranch chain (2b), and the moving branch chain (2a) and the moving branch chain (2b) comprise two coaxial rotation pairs. Compared with the prior art, the mechanism has less kinematic pair, the structure is simple, the rotary inertia is low, the movement response is fast, a single driving unit is only controlled by a single output freedom degree basically, the calibration is easy, the control is simple, the movement is controlled more accurately, and the development cost and the development cycle are greatly reduced.

The invention relates to a two-rotation and one-movement parallel mechanism which is used in the decoupling of the virtual axis machine and robot, consisting of a frame (1), a moving platform (3) andthree motion branch chains which connect the frame (1) and the moving platform (3). The motion branch chains (2a) and (2b) have the same structure which comprises revolute joint (21),(24), shifting pair (22),(25), spherical joint (23),(26) and the member, wherein junction of the motion branch chain(2c) and the frame is a vertex of a right angle. With only a few kinematic pairs, the mechanism has the advantages of simple structure, easy installation, small moment of inertia and fast motion response. Basically, single output degree of freedom only needs to control single driving unit. With easycalibration and control, not only the movement control is more precise but also the development cost and cycle is greatly lowered.

The invention relates to a decoupling three-rotation-degree-of-freedom parallel mechanism for virtual-axis machine tools and robots, including a static platform, a dynamic platform, and a first kinematic branch chain connected between the static platform and the dynamic platform, and a second kinematic branch chain and the third kinematic branch chain, each kinematic branch chain is composed of a rotating pair and a connecting rod connecting the rotating pair, and the axes of each rotating pair meet at the same point. Compared with the prior art, in the present invention, the first kinematic branch chain and the second kinematic branch chain synthesize a motion participation control braking platform, and the third kinematic branch chain independently participates in the control braking platform, so that the present invention has three partially decoupled The degree of freedom of rotation and the degree of freedom of the moving platform depend on the control of two kinematic chains. Compared with the structure of the three kinematic chains participating in the control of the braking platform, it has a better degree of decoupling, is easier to control, and can achieve better motion accuracy.

A tactile feedback system for a minimally invasive surgical instrument, comprising a slender rod of the minimally invasive surgical instrument and an end effector connected thereto, a first elastic device, a connecting piece with flexible deformation capability, a second elastic device, a first A pair of rollers, a second pair of rollers, an indicator, a measuring element and a computer control system. The position of the indicator can be read from the measuring element installed in the slender rod of the minimally invasive surgical instrument, and the computer control system reads the reading of the measuring element, converts and judges the magnitude of the force applied to the inner side of the end effector. The invention has the advantages of simple structure, high sensitivity and low cost.

The invention provides a triple rotating parallel mechanism for a virtual axis machine tool and a robot. The triple rotating parallel mechanism for the virtual axis machine tool and the robot consists of a machine frame, a moveable platform, and a first motion branched chain, a second motion branched chain and a third motion branched chain which are connected between the machine frame and the moveable platform, wherein the first motion branched chain comprises a first universal hinge, a first moveable pair and a second universal hinge which are connected with one another sequentially; the second motion branched chain comprises a third universal hinge, a second moveable pair and a fourth universal hinge which are connected with one another sequentially; and the third motion branched chain comprises a rotating pair and a fifth universal hinge which are connected with each other sequentially. The triple rotating parallel mechanism for the virtual axis machine tool and the robot has threedecoupled rotational degrees of freedom which only depend on the linear control of the motion pairs of the motion branched chains, wherein the implementing principle is very simple and the linear relationship is very good.

The invention provides a two-rotational degree-of-freedom parallel mechanism for an imaginary axis machine tool and a robot. The two-rotational degree-of-freedom parallel mechanism comprises a static platform, a movable platform, a first movable branched chain and a second movable branched chain, wherein the first movable branched chain and the second movable branched chain are connected between the static platform and the movable platform; the first movable branched chain comprises a universal hinge, a moving pair and a first revolute pair which are connected in sequence; the universal hingeis also connected with the static platform; the first revolute pair is also connected with the movable platform through a connecting rod; the second movable branched chain comprises a second revolutepair and a third revolute pair which are connected in sequence; the second revolute pair is also connected with the static platform; and the third revolute pair is also connected with the movable platform. The two-rotational degree-of-freedom parallel mechanism has two decoupled rotational degrees of freedom which only depend on the linear control of kinematic pairs of the movable branched chains, and has an extremely simple implementation principle and an extremely good linear relationship.

The invention provides a decoupled tri-rotation parallel mechanism, which comprises a stand, a moving platform, a first moving branch chain, a second moving branch chain and a third moving branch chain, wherein the first moving branch chain, the second moving branch chain and the third moving branch chain are connected between the stand and the moving platform. The first moving branch chain comprises a first universal hinge, a first moving pair and a second universal hinge which are sequentially connected; the second moving branch chain comprises a first spherical hinge, a second moving pair and a second spherical hinge which are sequentially connected; and the third moving branch comprises a rotation pair and a third universal hinge which are sequentially connected. The invention has three decouple rotational degrees of freedom, and the rotational freedom degree of freedom only depends on the linear control of the moving pair of the moving branch chains, therefore, the implementationprinciple is very simple and the mechanism has quite good linear relation.

The invention discloses a teabag packing machine and an outer bag heat-sealing assembly thereof. The outer bag heat-sealing assembly comprises an installing bracket, a driving mechanism, a first heat-sealing plate and a second heat-sealing plate. The driving mechanism comprises a rotating driving piece, a first connecting component and a second connecting component. One end of the first connecting component is connected to the rotating driving piece, and the other end of the first connecting component is connected to the first heat-sealing plate. One end of the second connecting component is connected to the rotating driving piece, and the other end of the second connecting component is connected to the second heat-sealing plate. The movement direction of the first heat-sealing plate and the movement direction of the second heat-sealing plate are opposite under the drive of the rotating driving piece. The movement of the first heat-sealing plate and the movement of the second heat-sealing plate are both driven by the same driving mechanism. The first heat-sealing plate, the second heat-sealing plate and the driving mechanism are linked together to form an integral structure. The first heat-sealing plate and the second heat-sealing plate are not mutually independent but associated. Compared with a heat-sealing assembly of the prior art, other intermediate driving pieces are no longer depended on, and the movement is stable and reliable.