179results about How to "Stable clamping force" patented technology

The present invention provides an electric locking device which has a simple structure, with which an operating time can be saved, and which has a sufficient clamping force required for operation. To a camshaft coupled to an electric motor through a speed reducing mechanism, a first cam and a second cam conjugate with each other are coupled. The first cam drives an arm driving rod in a clamping direction and the second cam drives the arm driving rod in a returning direction. Rotational motions of the first and second cams are converted into linear motions in the same direction by first and second cam contacting members supported by the arm driving rod. The arm driving rod drives a clamping arm to cause the arm to carry out a clamping operation. A cam face is such a cam face as to move the clamping arm at a high speed until the arm reaches a vicinity of an end and to move the arm at a lower speed after the arm has reached the vicinity of the end.

The invention discloses a hydraulic fixture used for machining a precision forging blade tenon root. The fixture consists of a fixture box cover part in contact with a blade back and a fixture box body part in contact with a blade basin; by transferring pressure of liquid in a hydraulic cavity of the fixture to other parts, a blade is clamped, so that the clamping force applied on the blade is more uniform and stable; when the hydraulic fixture is used for clamping, the blade can be clamped and loosened only by screwing a pressing regulation rod in and out, the operation control is convenient, and the damage to the blade is reduced. According to the hydraulic fixture used for machining the precision forging blade tenon root, the machining efficiency of the blade of an aviation engine can be improved, the machining precision of the blade of the aviation engine is also improved, and the clamping problem brought about when the precision forging blade tenon root is machined is solved; the fixture is simple in structure, convenient to install and high in positioning precision; the positioning precision is not affected even when the hydraulic fixture is dismounted for a plurality of times; and the hydraulic fixture is also applicable to the machining and application of the other types of blades.

A support for a computer peripheral device has a base, a post having a first end extending through the base and a second end that couples a computer peripheral device, and a pair of base supports. Each base support has an extension which is received within the base and which engages the first end of the post. When the post is rotated, the base supports are separated from each other to define a clamping space therebetween.

The invention discloses a clamping mechanism of a line pipe welding edge. The clamping mechanism comprises a support rack, wherein the support rack is provided with a fixed rod, which is provided with a fixed cylinder and a check ring, an air cylinder is fixed on the check ring, the output end of the air cylinder is connected with the fixed rod through a slide cylinder, the slide cylinder is arranged between the fixed cylinder and the check ring, pull-down rods are connected to two ends of the slide cylinder through hinges, swing arms are connected to the ends of the pull-down rods through hinges, the swing arms are hinged with the fixed cylinder through an upper swing rod and a lower swing rod, and when force of the swing arm applied to the inner wall of a pipe fitting reaches the maximum, a cutting tool on a lathe rotatably processes the edge of the pipe fitting, the adjustable swing arm can be used for processing grooves of pipe fittings with various diameters; the upper swing rod, the lower swing rod, the pull-down rods and the fixed rod form a triangular frame, and according to the principle of highest stability of the triangle, the swing arm can provide stable clamping force for the inner wall of the pipe fitting, and the high processing efficiency of the groove of the pipe fitting is guaranteed.

The invention discloses a bottle clamping mechanical arm. The bottle clamping mechanical arm comprises a swing frame, a sliding block and a mechanical arm, wherein the swing frame is used for fixing the mechanical arm on a bottle feeding device of a bottle washing machine; the sliding block is arranged on the swing frame in a sliding manner; a reset device is arranged between the swing frame and the sliding block; a push rod is arranged on the sliding block; the mechanical arm comprises a left clamping arm and a right clamping arm which are rotatably arranged on the swing frame; the left clamping arm and the right clamping arm comprise driving ends and clamping ends which are positioned at the two sides of the per se rotation axes; sliding chutes are arranged at the driving ends of the left clamping arm and the right clamping arm; the push rod is inserted into the sliding chutes of the left clamping arm and the right clamping arm and is used for driving the opening and closing of the clamping ends of the left clamping arm and the right clamping arm through the reciprocating motion of the sliding block; the left clamping arm and the right clamping arm independently move under the driving of the push rod, the engagement relationship in the prior art does not exist between the left clamping arm and the right clamping arm, and the left clamping arm and the right clamping arm are unlikely to wear in a movement process, are long in service life and low in using cost; the left clamping arm, the right clamping arm and the push rod form an interlocking structure, which can provide stable clamping force and avoid bottle falling caused by vibration in a bottle body overturning process. The invention also discloses a bottle washing assembly line.

The invention discloses a panel feeding clamp, which comprises a base for external installation, a pincer seat with one end fixed on the base, a substrate fixed on the base, a compression bar with the middle hinged with the other end of the pincer seat and an external casing. The compression bar is provided with a pincer opening end and a non-pincer opening end, wherein the pincer opening end andthe pincer seat form a pincer opening, and the non-pincer opening end is controlled by a driving mechanism to achieve opening or closing of the pincer opening, the driving mechanism comprises a cylinder arranged on the pincer seat and a spring assembly arranged on the substrate, the cylinder is connected with the spring assembly, the casing is rotatably provided with a C-shaped crank arm, one endof the crank arm is hinged to a connection portion of the cylinder and the spring assembly, the other end of the crank arm is hinged to a connection plate capable of sliding along the surface of the pincer seat, and elasticity effects of the spring assembly drive the connection plate to move close to the compression bar to enable the pincer opening to clamp a panel through the crank arm. When thecylinder applies reverse force on the crank arm, the crank arm drives the connection plate to move far away from the compression bar to enable the pincer opening to open. The clamp force is stable and reliable, has no damage to the surface of the panel, and avoids influences of power-down, decompression or pressure oscillation.

A preferred joint restraint includes a dampening force and a restraining force to control relative movement between a pad and gland and between the gland and bolt, respectively. The preferred restraint includes a gland, pads, and bolts. Preferably, a flexible member disposed in the pad selectively provides the dampening and retaining force. A preferred joint restraint also includes a pad and a bolt that coact to provide a controlled wedging action. The wedging action supplies supplemental tooth penetration and / or enhanced clamping force that stabilizes a shifting tubular member (pipe). A preferred tooth arrangement for a restraint pad produces an intermittent penetration pattern in the pipe. A preferred spacing member for a restraint tunes a clamping force generated by the restraint to accommodate variations in pipe geometry and / or materials. A preferred restraint is arranged according to a method that uses pipe expansion to provide an enhanced gripping action.

The invention discloses a pneumatic torque-adjustable cap screwing device capable of flexibly clamping, which comprises a cap screwing thread bushing, an elastic clamp ring, a rotary cover base, a gland core, a central spindle seal ring, a tightening nut, an air cavity, air inlet passages, a hollow rotating shaft, a protecting bush, an axial seal ring, a lower bearing pedestal, a bearing, an air inlet pipe, an upper bearing pedestal, an adapter sleeve, a connecting seat and a pneumatic motor, wherein the cap screwing thread bushing, the elastic clamp ring, the rotary cover base, the gland core, the central spindle seal ring, the tightening nut, the air cavity and the air inlet passages form a bottle cap pneumatic chuck; the hollow rotating shaft, the protecting bush, the axial seal ring, the lower bearing pedestal, the bearing, the air inlet pipe, the upper bearing pedestal, the adapter sleeve, the connecting seat and the pneumatic motor form a pneumatic cap screwing drive part; the bottle cap pneumatic chuck is utilized to flexibly clamp a bottle cap, the clamping force can be adjusted, the bottle cap cannot be damaged, and clamp marks cannot be preserved on the bottle cap. The pneumatic cap screwing drive part can stably screw the bottle cap in a fixed torque manner according to the predetermined requirements, and the torque of cap screwing can be adjusted and controlled. A pressure relief air passage communicated with the outside is arranged on the lower end surface of the gland core, so that a bottle cap can be conveyed to a certain position. The device has the advantages that the structure is simple, the pneumatic flexible clamp is realized, the pneumatic cap screwing is performed in a torque-adjustable manner, the cap screwing operation is stable and reliable, the cap screwing speed is high and steady, the running cost is low, and the maintenance is facilitated.

The invention discloses a locating device for line pipe groove machining. The locating device for the line pipe groove machining comprises a central shaft, the central shaft is fixed on a turning lathe, and a fixed barrel is mounted on the central shaft. The locating device for the line pipe groove machining further comprises an air cylinder, the output end of the air cylinder is connected with the central shaft through a sliding barrel, a sliding barrel is arranged on the central shaft, lower links are connected to the two ends of the sliding barrel through hinges, swinging arms are connected to the ends of the lower links through hinges, the swinging arms are hinged to the fixed barrel through an upper oscillating bar and a lower oscillating bar, grooves are formed in the two ends of the central shaft, multiple rolling wheels are mounted in the sliding barrel, and the rolling wheels are arranged in the grooves in a sliding mode, and the upper oscillating bar, the lower oscillating bar, the lower links and the central shaft form a triangular frame. According to the principle that a triangle is highest in stability, the swinging arms can provide stable clamping force for the inner wall of the pipe fittings, and the efficiency for processing grooves of pipe fittings is guaranteed.

The invention discloses a flexible self-adaptive hub carrying mechanical arm, which comprises a support frame. The left side surface of a support plate is connected with a left cylinder, and the rightside surface is connected with a right cylinder; a supporting plate is connected with a fixed base; guide rails are arranged on the fixed base; guide rail grooves are formed in the bottoms of a leftside moving base and a right side moving base; the left cylinder is connected to the left side of the fixed base; a cylinder shaft of the left cylinder is connected with the left side moving base; theright cylinder is connected with the right side of the fixed base; a cylinder shaft of the right cylinder is connected with the right side moving base; the left moving base is connected with a left finger-shaped clamping jaw; and the right moving base is connected with a right finger-shaped clamping jaw. According to the driving mode, more stable clamping force is provided, and a larger clampingjaw change range is obtained, so that hubs in a larger size range can be clamped; and the mechanical arm has large clamping force clamping force for large hubs and small clamping force for small hubs,and high flexibility of a hub production line is achieved.

The invention discloses splined hub middle hole boring equipment with a size adaption function, and relates to the technical field of automobile part production. The equipment specifically comprises abase, a scrap iron collecting mechanism, an adjustable boring mechanism, an inner hole machining pin and a self-centering lever clamp, wherein a control end is arranged on one side of the base, a cutting fluid sprayer is arranged on one side of a shaft sleeve, and a press claw is arranged at the top end of a trapezoidal base. According to the splined hub middle hole boring equipment with the sizeadaption function, through the arrangement of the scrap iron collecting mechanism, and the structure that a flow guide groove is hidden in a groove 20-60 cm away from the top end of the base, the cutting fluid and the scrap iron are prevented from overflowing due to too small height, and the spiral transmission effect is not obvious and the scrap iron is easily accumulated in the middle of the groove to cause blockage due to too large height is avoided; and due to the sawtooth-shaped structural design of a spiral progressive blade, the sawtooth-shaped spiral blade has the advantages of high efficiency of a rectangular spiral blade and high strength of a trapezoidal spiral blade, and can adapt to rapid conveying of the scrap iron and cutting fluid waste.

A material grabbing flexible gripper suitable for various structure styles relates to a material grabbing flexible gripper and solves problems of cost increase and production efficiency reduction due to the employments of mechanical grippers with various structural shapes or sizes when material with various shapes or sizes is grabbed by a robot gripper in the prior art. The material grabbing flexible gripper comprises a gripper assembly (1), a lead screw (2), a servo motor (3) and a supporting rack body (4), wherein the servo motor (3) is installed on one side of the lower end of the supporting rack body (4); an output end of the servo motor (3) is connected with one end of the lead screw (2); the other end of the lead screw (2) is connected with the supporting rack body (4); and the gripper assembly (1) is movably installed on the lead screw assembly (2). Material with various structure styles can be grabbed.

The invention discloses asynchronous gear ring machining-oriented production equipment with a depth measurement function and belongs to the technical field of automobile part detection. The equipmentcomprises a base, a self-centering lever clamp, a linear guide rail lead screw mechanism, a synchronous belt clutch mechanism and a depth and inner diameter measuring mechanism; a control end is arranged at one end of the base; the top end of a support is provided with a ram. According to the synchronous gear ring machining-oriented production equipment with the depth measurement function, a depthand inner diameter measuring mechanism is arranged, the linear guide rail screw rod mechanism assists the depth and inner diameter measuring mechanism to descend to a specified height under the guidance of a fixing pin to accurately and quickly measure the depth of an inner cavity of a synchronous gear ring material, and then a worm is separated from a spiral sleeve under the action of the worm and threaded hubs to drive an elastic pin to expand and deform, so that the inner diameter of the synchronous gear ring material can be measured. The flow design is adopted, the speed and precision arehigh, rapid conveying detection of large-batch materials can be achieved through the continuous conveying of a conveying belt, so that the production efficiency is greatly improved.

The invention discloses a clamping method for a wire pipe welding edge. When an acting force of a swinging arm on the inner wall of a pipe fitting becomes maximum, a cutting tool on a lathe starts to perform rotary machining on the edge of the pipe fitting; the swing arm capable of being freely adjusted can be used for pipe fitting grooves in various diameter sizes for treatment; and an upper swing rod, a lower swing rod, a lower pulling rod and a fixing rod form a triangular framework, according to the principle that the stability of a triangle is highest, the swing arm can provide a stable clamping force for the inner wall of the pipe fitting, and the pipe fitting groove treatment efficiency is guaranteed.

The invention belongs to the technical field of machine manufacturing and discloses a built-in hydraulic clamping chuck used for a spline cold rolling machine tool and an assembly machine. The built-in hydraulic clamping chuck comprises a flange positioning installation component, an axial positioning radial elastic clamping component, a connecting component and a movable center component. The movable center component is located at the central part of the built-in hydraulic clamping chuck; the left end of the movable center component is provided with the axial positioning radial elastic clamping component; the flange positioning installation component is arranged outside the left end of the movable center component; the flange positioning installation component is in threaded screwed connection with the axial positioning radial elastic clamping component by the connecting component; the connecting component is located outside the right end of the chuck. According to the built-in hydraulic clamping chuck disclosed by the invention, not only can accurate axial positioning be realized but also the uncertainty of the strength of a clamping force can be eliminated by using hydraulic clamping. The clamping force is stable and reliable. Moreover, the built-in hydraulic clamping chuck has the advantages that the structure is compact, the occupied length of a machine tool slide guide is small, and the processing range of the machine tool is broadened. The built-in hydraulic clamping chuck is easy to manufacture and install, and is very good in use value.

The invention relates to the field of mechanical clamps, and discloses an automatic mechanical clamp device and a clamping method. The automatic mechanical clamp device comprises a supporting rod. A sliding block with a guide rod is mounted on the supporting rod. Two clamp pieces with clamping force adjusting mechanisms are mounted on the guide rod. Each clamping force adjusting mechanism comprises multiple hydraulic cylinders with pistons. An electric conduction coil is wound around the barrel wall of each hydraulic cylinder. A pressure sensor is arranged at the free end of each piston. A relay control board is arranged on each electric conduction coil. Each replay control board is electrically connected with the corresponding pressure sensor. Liquid media of the hydraulic cylinders are magnetorheological fluid. According to the automatic mechanical clamp device, when clamping force reaches a threshold value set by the replay control boards, the replay control boards achieve circuit breakover of the electric conduction coils, a magnetic field is applied to the magnetorheological fluid, the magnetorheological fluid is converted into high viscosity and a low flowing state from a flowing state, and therefore the clamping force is stable; and clamped objects can be clamped and moved, and meanwhile the problem that too large clamping force is applied, and consequently the clamped objects are damaged can be avoided.

The invention relates to a coated fixture for a stirring fork guide hole drilling machine. The coated fixture comprises a fixture body, a pressure plate, a bushing, a drill bushing, a base, a V-shaped block, a stop pin, a sleeve head, a threaded rod, a nut and a bracket, wherein the drill bushing is positioned on the pressure plate of the fixture, and is fixedly connected with the pressure plate of the fixture; the replaceable bushing is arranged between the drill bushing and the pressure plate of the fixture; the pressure plate is fixedly connected to the top of the fixture body; a stirring fork positioning mechanism consisting of the V-shaped block, the base and the stop pin is fixedly connected to the lower part of the pressure plate and the front of the fixture body; a spiral rapid-withdrawal clamping mechanism consisting of the threaded rod, the sleeve head, the nut and the handle is arranged in front of the stirring fork positioning mechanism through the bracket; the bracket is fixedly connected to the fixture body. The coated fixture is improved on the basis of a conventional fixture, and has the characteristics of high friction and wear resistance, long service life, low manufacturing cost, small positioning errors, simplicity in clamping, high production efficiency and the like.

The invention discloses a compression tensile testing machine controlled by a computer. The compression tensile testing machine comprises a support body, a base and a computer, the support body and the computer are fixedly arranged on the top surface of the base, the computer is located on the right side of the support body, a lifting cavity with a rightward opening is formed in the support body,an auxiliary block is arranged on the left wall of the lifting cavity in an up-down sliding manner, and a rectangular cavity with a forward opening is formed in the auxiliary block. According to the invention, in a condition that a special clamp does not need to be manufactured, a vertical tensile compression test is carried out on a test article, a tensile compression test in the cross section direction can be easily carried out, the test process becomes easier and more convenient, time does not need to be wasted for manufacturing a clamp, the intelligent automation degree of the compressiontensile testing machine can be increased by direct calculation of the computer, and the obtained test data is more accurate.

The invention discloses a rotating type hydraulic manipulator. The rotating type hydraulic manipulator comprises a base, a rotating base, a first mechanical arm, a second mechanical arm and a clampingplier body; the rotating base is arranged at the upper end of the base in a relative rotating manner; a lifting hydraulic cylinder is fixed to the upper end face of the rotating base; a lifting loopbar is installed on the upper end face of the lifting hydraulic cylinder, and a lifting sliding rod is arranged in the lifting loop bar in a sliding sleeved manner; a stand column is vertically fixedto the upper end face of the lifting sliding rod; a rotating shaft is arranged between the first mechanical arm and the stand column for rotational connection; the first mechanical arm and the secondmechanical arm are rotationally connected through a rotational connection piece; a hydraulic pump is fixed to the outer surface of one side of the clamping plier body, and is connected with a hydraulic cylinder arranged in the clamping plier body; hydraulic loop bars are uniformly installed on the hydraulic cylinder; and hydraulic sliding rods are installed in the hydraulic loop bars in a slidingsleeved manner. According to the rotating type hydraulic manipulator, height adjusting and firm grabbing on articles, especially large articles, can be achieved through a hydraulic principle.

The invention relates to a brake device which maintains extension and retraction positions of a piston rod, in particular to a piston rod brake device which is needed by sudden stop of a cylinder during the moving process of the cylinder, and uses a pneumatic element as a power source, can lock moving positions of an air cylinder, the piston rod of a hydraulic rod and other cylindrical guide pillars, and belongs to the pneumatic hydraulic technology field. The piston rod brake device comprises a cylinder barrel, wherein a plurality of locking blocks are arranged in the cylinder barrel, and a plurality of brake pads are arranged on the inner side of each locking block, an air sac is arranged on the inner wall of the cylinder barrel and each locking block, and inflation inlets communicated with the air sacs are formed in the side wall of the cylinder barrel. When the air sacs are inflated through the inflation inlets, the air sacs swell and compress the locking blocks towards the inner side of the cylinder barrel, and therefore the brake pads at the front ends of the locking blocks are driven to tightly hold the piston rod installed at the central position of the piston rod brake device. The piston rod brake device swells the air sacs by supplying air to the air sacs so as to push the locking blocks, provides stable clamping force, rapidly and reliably brakes the piston rod, and is large in brake force and reliable in reset ability.

The invention relates to a clamping device of an indexing device for a machine tool. The present invention is developed in light of the situations, and an object of the present invention is to provide a clamping device capable of providing indexing at a desired angle while providing a high rigidity and a large clamping torque. A clamping device for holding an indexed angular position of a main shaft includes a clamp section non-rotatable relative to the main shaft, and a pressing mechanism including a clamp piston displaceable in an axial direction of the main shaft and causing a fluid pressure received by the clamp piston to act on the clamp section. The clamp section includes a first clamp portion being non-rotatable relative to the main shaft, and a second clamp portion being rotatablewith the main shaft. The pressing mechanism includes first and second pressing portions which respectively press the first and second clamp portions. The second clamp portion or the second pressing portion is elastically displaced when the clamp piston advances by the fluid pressure. Forces in axial and radial directions are respectively applied to the first and second clamp portions, thereby clamping the main shaft.