55results about How to "Clamping force is easy to control" patented technology

The invention belongs to the field of machine tools, and particularly discloses a rotatable multi-angle clamping mechanism for a machine tool. The problems of low clamping efficiency, troublesome operations and high labor intensity of existing machine tool clamps are solved. The rotatable multi-angle clamping mechanism comprises a base, a first motor and a worm seat are installed at the bottom ofthe base, a worm is rotatably installed on the worm seat, an output shaft of the first motor is connected with the worm through a belt, an angle measuring device is installed at the top of the base, and a rotating shaft is rotatably arranged at the top of the base in a penetrating mode. A worm wheel is fixed to the bottom end of the rotating shaft, a first gear is fixed to the top end of the rotating shaft, a first connecting rod is fixed to the side of the first gear, a rotating seat is fixed to the end, away from the first gear, of the first connecting rod, and first sliding grooves are formed in the upper and lower sides of the rotating seat. The rotatable multi-angle clamping mechanism for the machine tool is simple in structure and flexible in use, and can greatly improve the convenience and efficiency of machine tool clamping.

The invention discloses a special composite fixture for clamping a shaft collar and belongs to the field of machine tool fixtures. The special composite fixture comprises a fixture block, sliding rails, a large adjusting screw, a moving block, a large clamping block, a small adjusting screw, a fixed block and a small clamping block, wherein the lower ends of the sliding rails are arranged on the fixture block; the large adjusting screw is meshed with the moving block; the lower end of the small clamping block is embedded into a dovetail groove in the lower end of a groove of the large clamping block; the small adjusting screw is meshed with the fixed block; one end of the small adjusting screw is fixedly connected with the small clamping block; a clamping surface of the large clamping block and a clamping surface of the small clamping block respectively consist of three semicircular cylindrical surfaces with different diameters; the diameters of the semicircular cylindrical surfaces are identical with the corresponding diameters of workpieces. According to the special composite fixture disclosed by the invention, the problems that shaft parts containing the shaft collars cannot be reliably clamped, a clamping force is not easy to control and a special fixture is not high in generality in the traditional general fixture are solved. The special composite fixture has the advantages of simple structure, reasonable design and easiness in manufacture.

The invention discloses a square workpiece compound fixture of a milling machine and belongs to the field of machine tool fixtures. The square workpiece compound fixture comprises a fixture base, a sliding rack, a large regulation screw rod, a movable block, a large clamping block, a small regulation screw rod, a fixed block, a small clamping block, a large clamping surface and a small clamping surface, wherein the lower end of the sliding rack is arranged on the fixture base, the large regulation screw rod is meshed with the movable block; the lower end of the small clamping block is embedded into a dovetail groove at the lower end of the groove of the large clamping block; the small regulation screw rod is meshed with the fixed block; one end of the small regulation screw rod is fixedly connected with the small clamping block; the large clamping block is provided with the large clamping surface; the small clamping block is provided with the small clamping surface. The square workpiece compound fixture disclosed by the invention can be used for solving the problems such as high labor intensity, low workpiece lateral surface processing stability, long part processing auxiliary time and difficulty in clamping force control caused by an existing general fixture as well as low generality and the like caused by a special fixture, and has the advantages of simple structure, reasonable design, and easiness for manufacturing.

The invention relates to a servo control glass centering intelligent identification and clamping device. The servo control glass centering intelligent identification and clamping device comprises a base, a longitudinal clamping assembly, a transverse clamping assembly, sucker assemblies, support assemblies, buffering assemblies and blocking columns. The longitudinal clamping assembly and the transverse clamping assembly are arranged on the base in a cross-shaped manner. The support assemblies and the sucker assemblies are correspondingly arranged at the corners where the longitudinal clampingassembly intersects with the transverse clamping assembly on the base. At least one buffering assembly is arranged on each of the two sides, located on the longitudinal clamping assembly, of the transverse clamping assembly. The transverse clamping assembly drives the buffering assemblies located on the two sides of the longitudinal clamping assembly to get close to and away from each other. At least one buffering assembly is arranged on each of the two sides, located on the transverse clamping assembly, of the longitudinal clamping assembly, and the longitudinal clamping assembly drives the buffering assemblies located on the two sides of the transverse clamping assembly to get close to and away from each other. Each blocking column is vertically arranged on the corresponding buffering assembly. The servo control glass centering intelligent identification and clamping device has the beneficial effects that due to the buffering effect of the buffering assemblies, the clamping force isrelatively small in the pushing process.

The invention relates to the technical field of a clamping chuck in a three-dimensional pipe laser cutting system, in particular to a clamping chuck capable of correcting and compensating deviation ofthe clamping center of a pipe and a correction method. The clamping chuck and the correction method are characterized in that clamping jaws move to designated positions and then are locked, after themaximum moment is set, in the movement process, the passive force provided by the clamping jaws of the clamping chuck only needs to be large enough to maintain the situation that the pipe does not relatively move and needs to avoid the situation that the pipe is damaged due to overlarge clamping force. Compared with a traditional clamping chuck which only has two states, namely, on and off, and has too large clamping force hard to adjust during clamping, the clamping chuck has the advantages that great improvement is achieved, meanwhile, it is ensured that the mass center of the pipe coincidewith the rotating center of the clamping chuck, so that the whole cutting system is more stable, and the clamping force is controllable.

The invention discloses a square workpiece fixture of a milling machine and belongs to the field of machine tool fixtures. The square workpiece fixture comprises a fixture base, a sliding rack, a regulation screw rod, a movable block and a clamping block, wherein the lower end of the sliding rack is arranged on the fixture base; the upper end of the sliding rail is clamped on the concave edge of the lower end of the movable block; the lower end of the clamping block is pressed on the concave edge of the upper end of the movable block; the regulation screw rod is meshed with the movable block; the clamping surface of the clamping block consists of four planes; the included angle of every two adjacent planes is identical with the angle of the corresponding outside corner of a square workpiece. The square workpiece fixture can be used for solving the problems such as high labor intensity, low workpiece lateral surface processing stability, long part processing auxiliary time, difficulty in clamping force control and the like caused by an existing general fixture, and has the advantages of simple structure, reasonable design, and easiness for manufacturing.

The invention relates to an elastic chuck which comprises a cylinder. An axial through cavity is formed in the cylinder; the through cavity is provided with a locating shaft; at least two grooves are formed in the outer wall of the cylinder; the grooves are respectively provided with locating rings; the locating rings are composed of at least two locating arcs; the two ends of the locating arcs are respectively in screw connection with the bottoms of the grooves through locating screws; protruded blocks are integrally formed on the inner sides of the locating arcs; through holes are formed in the grooves and at the positions of the grooves corresponding to the protruded blocks; the through holes are communicated with the through cavity; the protruded blocks are inserted into the through holes; locating cone frustums are arranged on the locating shaft and at the positions of the locating shaft corresponding to the protruded blocks; the locating screws comprise nuts and screw bodies which are integrally formed; the screw bodies comprise threaded portions and smooth portions which are integrally formed; the smooth portions are close to the nuts, and the threaded portions are far away from the nuts. The elastic chuck is simple in structure, all locating rings can open at the same time to clamp cylindrical tubes when the elastic chuck is used for clamping the cylindrical tubes, and the stress is even. Therefore, processed cylindrical tubes are identical in thicknesses of lateral walls, the defective percentage of products is reduced, and the product quality is improved.

The invention relates to an automatic optical fiber stripping machine. The automatic optical fiber stripping machine comprises a rack, wherein the rack is provided with a man-machine interface and a stripping mechanism, the stripping mechanism comprises a servo straight line module, a clamping component and a cutting component, the servo straight line module is vertically installed on the rack, the clamping component is arranged on the servo straight line module, the cutting component is arranged below the clamping component, the clamping component comprises a connection plate, a first double-end cylinder and two cylindrical clamp heads, and the cutting component comprises a second double-end cylinder and two cutting units. In the automatic optical fiber stripping machine, the air cylindercontrols to clamp the optical fiber, so that the clamping force is controllable, and the product is not damaged; stripping length of the optical fiber can be controlled accurately by using the servostraight line module and setting parameters of the man-machine interface; the optical fiber is stripped at high automation degree, so that the production efficiency is improved greatly; and the product with optical fiber stripped has small difference, can be produced in large scale, and lowers labor cost.

The invention discloses a new energy automobile battery protection device, and relates to the technical field of new energy batteries. the invention aims to solve the life problem; the device specifically comprises a shell, a battery placement mechanism is arranged in the shell, the battery placement mechanism comprises four sets of damping assemblies, a placement base and a clamping assembly, thefour sets of damping assemblies are arranged at the four corners of the bottom of the placement base correspondingly, and each set of damping assembly comprises three sets of damping rods and six sets of universal ball structures; the top and the bottom of each set of damping rods are movably connected to the inner wall of the bottom of the shell and the outer wall of the bottom of the placementbase through universal ball structures respectively, the three sets of damping rods form a triangular pyramid structure, each damping rod comprises a first sleeve and a second sleeve, and the inner wall of the first sleeve and the inner wall of the second sleeve are movably connected with the same piston rod. According to the device, a spring II can be effectively prevented from being subjected tonon-axial displacement and spiral torque, the spring II can be well protected, and the service life thereof is prolonged.

The invention discloses a fruit tree supporting device for fruit tree cultivation. The device comprises a first mounting seat and a second mounting seat which are matched with each other, a horizontal clamping screw rod and a second transmission rod are assembled on the first mounting seat in a spaced mode, a sliding seat is assembled between the clamping screw rod and the second transmission rod, and a base is connected to the upper end of the sliding seat. A connecting base is assembled on one side of the base through a plurality of evenly-distributed assembling bolts, and circular-arc-shaped limiting plates are installed on the connecting base. According to the fruit tree supporting device for fruit tree cultivation, the base, the connecting base and the limiting plates are assembled through the assembling bolts, the suitable connecting base and the limiting plates can be selected conveniently for fruit trees of different varieties and different growth periods, and the fruit tree supporting effect is improved. The first mounting base and the second mounting base are easy to disassemble and assemble and can be conveniently placed and spliced around the fruit trees. Through cooperation of a pressure sensor and a limiting spring, the clamping force of the two limiting plates on the fruit tree support is conveniently controlled, and orderly growth of the fruit trees is ensured.

The invention discloses a fastener capable of preventing automatic rolling movement in a loosening direction. The fastener comprises a bolt, a first nut, a gasket and a second nut, the center of the gasket is provided with a through hole for a screw rod of the bolt to pass through, and the top of the gasket is provided with a conical convex surface. A conical concave surface is arranged at one end of the second nut, and after the bolt, the first nut, the gasket and the second nut are mounted and screwed on a workpiece, the bottom of the first nut is in contact with the workpiece. The bottom of the gasket is in contact with the top of the first nut. After the gasket deforms, a contact structure without a transverse gap is formed between the conical convex surface and the conical concave surface, and a contact structure without a transverse gap is formed between a through hole and the external thread of the bolt. Therefore, during transverse vibration or impact, the first nut, the second nut and the bolt can be effectively prevented from continuously rolling in the loosening direction.

The invention discloses a machining center pneumatic tool changing mechanical hand. The machining center pneumatic tool changing mechanical hand comprises a mechanical arm, a pin shaft, an air cylinder, a U-shaped push rod, a roller and a mechanical claw. The mechanical hand has the beneficial effects that controllable clamping force is provided, tool falling is avoided, unloosening after tool clamping is avoided, when the mechanical arm clamps and loosens the tool, the mechanical hand is simple and rapid, in the tool changing process, the mechanical hand can rapidly clamp or loosen the tool with the precise strength, accidents are reduced, in a machining center automatic tool changing device, the mechanical hand plays a role in grabbing and conveying the tool, the tool is taken down froma tool changer and then is loaded on a spindle, and meanwhile, the tool is taken down from the spindle and is loaded into the tool changer.

The invention discloses a thread pair capable of preventing automatic rolling movement in a loosening direction. The thread pair capable of preventing the automatic rolling movement in the loosening direction comprises a bolt, a first nut and a second nut, wherein the major diameter of the internal thread of the second nut is less than the major diameter of the external thread of the bolt, or the minor diameter of the internal thread of the second nut is less than the minor diameter of the external thread of the bolt; after the bolt, the first nut and the second nut are installed and screwed on a workpiece, the bottom of the first nut makes contact with the workpiece, the bottom of the second nut makes contact with the top of the first nut, and the tooth bottom of the internal thread of the second nut and the tooth top of the external thread of the bolt are of contact structures which are transversally locked with each other; or the tooth top of the internal thread of the second nut and the tooth bottom of the external thread of the bolt are of contact structures which are transversally locked with each other, so that the first nut, the second nut and the bolt can be effectively prevented from continuous rolling movement in the loosening direction during transverse vibration or impact.

The invention discloses a novel culture and separation device for coronavirus pneumonia vaccine research and development, and the device comprises a base; a cavity is fixed on the base, the cavity isprovided with a sealing cover, and a culture dish is movably arranged in the cavity; according to the novel culture and separation device for coronavirus pneumonia vaccine research and development, the feeding of the two mounting bases is controlled through the clamping lead screws, a culture dish is convenient to clamp, the sliding rods and the clamping springs are arranged between the limiting plates and the mounting bases, the clamping force of the limiting plates on the culture dish is convenient to control, and the culture dish is prevented from being damaged; moreover, through cooperation of a driving wheel and a reset spring, the culture dish is conveniently driven to shake necessarily, and a scraping plate can be driven to slide along the inner wall of the culture dish through a feeding bolt, so that culture substances are conveniently separated from the culture dish, and discharging is facilitated; and through the cooperation of the fan and the temperature sensor, the temperature in the cavity can be conveniently controlled, so that the culture dish can obtain proper culture conditions.

The invention relates to an auxiliary tool for intentional dental replantation. The auxiliary tool comprises a fixing part capable of fixing teeth and a supporting part, wherein the fixing part is arranged in the supporting part in a sliding manner. The auxiliary tool is simple in structure and convenient to use; the teeth are stably fixed by adopting the fixing part, so that the auxiliary tool is prevented from being in direct contact with an area of a root of a bone boundary of enamel teeth; and meanwhile, the stability of cutting off roots of the teeth is ensured.

The invention discloses a fruit picking machine capable of controlling force through manual friction. The fruit picking machine comprises a rack assembly, a transmission rod, a power transmission system, a force adjusting mechanism and a grasping structure, and further comprises a self-locking mechanism, wherein the rack assembly is formed by fixedly connecting a hollow long pipe and a rigid supporting plate; the power transmission system comprises a hand wheel, a bearing seat, an input shaft, a bearing, a friction wheel and a friction transmission piece; the force adjusting mechanism comprises a fixing base, a supporting screw and a movable supporting rod. During working, the hand wheel is rotated, and the friction transmission piece moves forward under the action of friction force, so that the three clamping jaws are opened to allow fruits to enter; after the fruits are put in, the hand wheel is rotated in the reverse direction, the friction transmission piece retreats under the action of friction force, the three clamping jaws are gradually closed, and the fruits are captured. In addition, when no torque is input to the hand wheel, the self-locking mechanism can prevent the clamping force in the apple picking process from disappearing. The fruit picking machine is relatively simple in structure, adopts handheld picking and is convenient to use, the damage rate of picked fruits is reduced, and economic benefits are improved.