12706 results about "Cam" patented technology

A convertible stroller is provided that includes a shell configured to support an infant. A pair of rear legs are pivotally coupled to the shell and a pair of front legs are pivotally coupled to a respective rear leg. The rear legs and the front legs are retractable to a first transport condition, and deployable away from the shell to a second transport condition usable as a stroller. A front wheel may be coupled to each front leg that is rotatable about a horizontal axle in the second transport condition. Each front wheel has a post that acts as an axis of rotation in the second transport condition. A cam sleeve is provided that is movably disposed on each post. In a first position, the cam sleeve allows rotation about the axis of rotation, and in the second transport condition prevents rotation of the front wheel about the axis of rotation.

The invention relates to the technical field of numerical control machining, in particular to a CAM post-optimization method and system for geometric error compensation of a multi-axis linkage numerical control machine tool. The method comprises the following steps: firstly, carrying out kinematics analysis and geometric error modeling on a target machine tool, and deploying the target machine tool in a CAM post-optimization module; then actual state parameters of the target machine tool in the machining process are collected in real time through a laser interferometer; a motion instruction of a target machine tool and a detection result of a laser interferometer are synchronously obtained through a CAM post-optimization module, and then geometric errors of a linear axis and a rotating axis in the operation process of the target machine tool are calculated in real time through a kinematic model and a geometric error model. According to the method, different linear axis compensation modes are adopted for different instructions; and a cutter shaft attitude vector error and a cutter cutting point position error are calculated in combination with inverse kinematics, and are corrected step by step. The problem that the error compensation precision of a controller in an existing numerical control machine tool is insufficient can be solved.

A hinge apparatus according to various embodiments may include: a bracket including a first coupling part formed in a first direction with respect to a middle of the bracket and a second coupling part formed in a second direction opposite to the first direction with respect to the middle of the bracket, a first body part including a first plate, a first rotation part coupled with the first plate fastened to the first coupling part of the bracket and configured to rotate about the bracket, and a first cam formed in the first rotation part, a second body part including a second plate, a second rotation part coupled with the second plate fastened to the second coupling part of the bracket and configured to rotate about the bracket, and a second cam formed in the second rotation part, and a torque provision unit, including a first follower including a first cam part engaged with the first cam structure and disposed in the bracket, a second follower including a second cam part engaged with the second cam structure and disposed in the bracket, and a pressurizing part disposed in the bracket between the first follower and the second follower and configured to provide an elastic force to the first follower and the second follower in opposite directions.

A guide fitting, guiding a body part for simultaneous translational and rotational movement relative to a stationary base, has a guide cam track, a guide element guided in the at least one guide cam track, and a linear guide with at least one guide rail and a running rail displaceable relative thereto, one of which is coupled in a stationary manner to the guide element and the other of which is coupled to the guide cam track by a pivot bearing. The guide cam track or the guide element can be fixedly fastened to the body part. The fitting also includes at least one ejection device with an unlockable force accumulator drives the body part from at least one end position by exerting force against an ejection direction along a limited path, and at least one activator for unlocking the force accumulator of the ejection device.

An electronic control clutch structure of an actuator device having a driver, a cam, a clutch wheel, and a transmission wheel is provided. The cam is connected to the driver, is driven by thereof, and includes a first actuating portion and a second actuating portion. The clutch wheel is connected to the rotating draft, rotates with thereof, and is arranged atop on the cam. The cam operatively actuates the clutch wheel. The transmission wheel is connected to the rotating draft. The clutch wheel and the transmission wheel are in a detached state when the clutch wheel is located on the first actuating portion. The clutch wheel and the transmission wheel are in an embedded state when the clutch wheel is located on the second actuating portion. The electronic control clutch structure may adapt uneven areas in the grass to perform weeding work according to the terrain changes of the grassland.

Provided is a compressible cam lever that has a section that can be compressed by external force. When the external force is released, elastic force within the cam lever causes the section to return back to its original position creating a spring force. The compressible cam lever may be used as part of a handle for opening and closing a clamp that is part of a tripod or other piece of equipment which can hold rails for firearms, sights, scopes, parts, and the like, therein. The compressible cam lever may include a handle, a round-shaped section comprising a flexible curved surface that curves back towards the handle and protrudes outward, and an opening disposed between an end of the flexible curved surface and the handle.

Removable ammunition magazines for air guns, combinations of such a magazine with an air gun, and methods of use. The removable ammunition magazine includes a pellet feeder and a canister chamber. A puncture needle is disposed at the top end of the canister chamber, and a canister seat is disposed at a bottom end of the canister chamber. A lever with a cam is pivotably secured to a bottom end of the body, and a cam follower engages the cam and operatively coupled to the canister seat. The lever rotates between an open position, in which the canister seat is shifted away from a puncture needle, and a closed position, in which the canister seat is shifted toward the puncture needle. The lever is recessed within a recess in a bottom surface of the body in each of the first and second positions. The cam may have two detents to help hold the lever in the open and closed positions.

The invention belongs to the technical field of vibration analysis and testing of bearings, and particularly relates to a cam driven bearing wear degree monitoring method and system, and the method comprises the steps: carrying out the equal-angle resampling processing of a vibration signal through a rotating speed signal, decomposing an obtained angular domain vibration signal into a plurality of mode components through a variational mode decomposition algorithm, and carrying out the measurement of the vibration signal; according to the kurtosis value of each modal component and the correlation coefficient of each modal component and the original vibration signal, evaluating the impact saliency weight of each modal component, and performing weighted summation on the energy of each modal component to obtain comprehensive impact energy; calculating to obtain a speed decoupling wear index without the influence of the rotating speed by utilizing the comprehensive impact energy and the vibration energy calculated by the physical mapping model; and the speed decoupling wear index is compared with a preset self-adaptive alarm threshold value, and the wear state of the cam driven bearing is judged according to a comparison result. According to the invention, the problems of false alarm and missing alarm under the variable-speed working condition are solved.

A weight-adjustable dumbbell includes a plurality of dumbbell plates; abase for holding the dumbbell plates; a positioning shaft; a handle movably sleeved on the positioning shaft; a plurality of cam structures disposed on two ends of the handle respectively; and a driving plate disposed between the handle and the cam structures, where the handle drives the plurality of cam structures to rotate on the positioning shaft through the driving plate; where two ends of the positioning shaft are respectively provided with a control device, the control device is connected to the cam structure to control the cam structure rotating relatively with the dumbbell plates.

The invention discloses a humanoid robot and a shank structure thereof. The shank structure comprises a knee frame, a foot plate, a driving assembly and a cam; the foot plate is rotatably connected to the knee frame around the X axis; the knee frame is provided with a rotating seat; the inner shaft is rotationally connected to the rotating seat around the Y axis; the fixing sleeve is rotatably mounted on the inner shaft; the driven planetary gears are meshed with the driving planetary gears on the two sides; one end of the side shaft is limited to the fixing sleeve, and the driven planetary gear is rotationally arranged on the side shaft in a sleeving mode. The upper end of the connecting rod is rotatably connected to the connecting seat, and the lower end of the connecting rod is rotatably connected to the foot plate; when the cams at the left and right positions rotate towards the same direction, the connecting seat drives the foot plate and the knee frame to rotate around the Y axis through the connecting rod; when the cams at the left and right positions rotate in opposite directions, the connecting seat rotates around the side shaft and drives the foot plate to rotate around the X axis relative to the knee frame through the connecting rod. According to the scheme, more flexible gait control can be achieved, and the problem that the weight burden of shanks is too heavy due to a direct drive mode in a traditional system is solved.

An electronic device includes at least one hinge device connecting a first and second housing about a folding axis. The at least one hinge device includes first and second arms, each rotatable about parallel axes. The first arm features first and second cam structures forming a first cam accommodation space, while the second arm includes third and fourth cam structures forming a second cam accommodation space. A first hinge cam, with fifth and sixth cam structures, is linked to the first and third cam structures in their respective spaces and moves parallel to the folding axis. A second hinge cam, with seventh and eighth cam structures, is linked to the second and fourth cam structures and also moves parallel to the folding axis. Additionally, the first hinge cam has a first magnet, and the second hinge cam has a second magnet, interacting via magnetic force.

An archery cam adjustment assembly for an archery bow includes an axle extending along an axis from a first end to an opposing second end and structured to traverse a limb of an archery bow. The axle further includes a central portion defining a plurality of threads. A cam support is structured to support a cam and to engage the central portion of the axle. A securing member is structured to be moved between a locked and an unlocked state. In the unlocked state, the axle is enabled to rotate freely relative to the cam support to move the cam support along the axis and displace the cam in a lateral direction with respect to the limb. In the locked state, the axle is inhibited from rotating relative to the cam support and the cam support is inhibited from moving along the axis.

A pivot hinge has a pivot pin member for pivotally connecting a pivotal door leaf with a structural element. The hinge comprising a first cam follower on a first side of the pivot pin member and a second cam follower on a second side of the pivot pin member opposite the first side, the first and second cam followers both being movable in a radial direction relative to the cam. A slidable reciprocating member is arranged within the casing and has first and second end parts rigidly connected to one another. The cam has a pair of recesses. The spring arrangement is arranged between the second cam follower and the second end part and urges both first and second cam followers against the cam and into the respective recess to provide a holding moment to retain the door leaf in a holding position.

The utility model discloses an auger discharging device for feed production, which relates to the technical field of feed production and comprises a feed conveying barrel, symmetrical supports are fixedly connected to two sides of the feed conveying barrel, an auxiliary rod is fixedly connected in the feed conveying barrel, the auxiliary rod is rotatably connected with a sieve plate, and a spring is fixedly connected to the top of one side, far away from the auxiliary rod, of the sieve plate. The side, close to the feeding hopper, of the support is rotationally connected with a movable rod, the side, close to the auxiliary rod, of the movable rod is fixedly connected with a cam, and the cam is located below the spring. The device has the beneficial effects that a movable rod drives a cam to extrude a sieve plate, the sieve plate rotates around an auxiliary rod by a certain angle to drive a spring to be compressed and deformed, the sieve plate is continuously extruded by the cam, one side of the sieve plate vibrates, impurities and chippings in feed are vibrated to fall into a collecting box through vibration, and the feed on the sieve plate moves towards one side of the sieve plate along with vibration; feed can be conveniently screened and collected, and the situation that too many chippings stay in the conveying barrel and are difficult to clean is avoided.

PROBLEM: To stably support a door.SOLUTION: A door device includes: an engagement member provided in a variable link equipped with a variable connection length mechanism; and a cam member provided on a door and having a cam groove with which the engagement member engages. Furthermore, an extension end of the cam groove that comes into close proximity to an engagement part of the engagement member that moves within the cam groove, based on full opening movement of the door is an opening side end of the cam groove. The cam groove has a groove width change section being set on an opening side of the extension region including the opening side end, and a groove width of the cam groove in this groove width change section is narrower than a groove width on a closing side of the extension region beyond the groove width change section.

The invention discloses a mechanical interlocking device of a switch cabinet, the switch cabinet comprises a cabinet body, a cabinet door, and a circuit breaker mechanism and an isolation mechanism arranged in the cabinet body, the cabinet door is hung on the cabinet body, the isolation mechanism is provided with a grounding shaft and an isolation shaft, the circuit breaker mechanism is provided with a closing button and a circuit breaker main shaft, the grounding shaft is provided with a first cam, and the isolation shaft is provided with a second cam. The isolation shaft is provided with a second cam, the circuit breaker main shaft is provided with a third cam, the mechanical interlocking device comprises a first interlocking assembly, a second interlocking assembly and a third interlocking assembly, one end of the first interlocking assembly is matched with the outline of the first cam, and the other end of the first interlocking assembly is matched with the cabinet door in a hanging mode; one end of the second interlocking assembly is matched with the contour of the second cam, the other end of the second interlocking assembly is in locking fit with the closing button, one end of the third interlocking assembly is matched with the contour of the third cam, and the other end of the third interlocking assembly is in shielding fit with the isolation shaft. Misoperation of the switch cabinet can be prevented, the reliability of the interlocking mechanism can be improved, and the service life of the interlocking mechanism can be prolonged.

In a compound bow, an axle, having threaded ends, is pushed through a hole in a cam. Cam spacers, having internal threads, are screwed onto the ends of the axle until the ends of the cam spacers abut the cam. The cam can rotate freely around the unthreaded middle portion of the axle. The ends of the cam spacers go into holes in limb brackets attached to the bow's resilient limb ends. In one embodiment, the ends of the cams are threaded, and a nut is tightened over the thread to shift the cam spacers and cam left or right relative to the limb brackets. In another embodiment, the cam spacers and limb brackets are threaded, and turning the cam spacer shifts the cam left or right. In both embodiments, the cam position is precisely adjusted and very stable.

The invention relates to the technical field of transmission pumps, and discloses a cam transmission pump. The cam transmission pump comprises a plunger assembly and a first driving assembly, and the plunger assembly is provided with a plunger rod reciprocating in the first direction; the first driving assembly comprises a first driving part and a cam, the first driving part is in driving connection with the cam and can drive the cam to rotate, the end of the plunger rod is slidably connected to the outer contour of the cam, the outer contour of the cam comprises an acting section and a reset section which are connected end to end, and the acting section is used for driving the plunger rod to move in the direction away from the cam. The reset section is used for driving the plunger rod to move in the direction close to the cam, and the radian of the acting section is larger than that of the reset section. Due to the fact that the radian of the acting section is larger than that of the reset section, the acting duty ratio of the cam is larger than 50%, and the energy utilization rate is improved. Through cam transmission, rotary driving of the first driving piece is converted into linear reciprocating motion of the plunger rod, and the duty ratio of acting is increased.

The invention discloses a numerical control machine tool dynamic characteristic matching and machining path planning method and system for efficient cutting, and relates to the technical field of intelligent manufacturing and numerical control machining path optimizing.The method comprises the following steps that on the basis of a CAD three-dimensional drawing of a machined part, the CAD three-dimensional drawing is imported into CAM software, the machined surface and the non-machined surface of the part are determined, and the machining surface and the non-machined surface of the part are matched; various machining schemes and technological parameters of different machining faces of the part are generated through CAM software in combination with drawing parameter requirements; and for the generated machining schemes under the process parameters of the different machining surfaces, the machining rigidity and vibration parameters are calculated in combination with part material data, and meanwhile, the standard rigidity and vibration parameters of the current numerical control machine tool are collected. According to the method, the dynamic performance of the numerical control machine tool is combined, the tool path planning in the CAM programming process and the technological parameters are matched, and tailoring and force measuring are carried out according to numerical control programming of different machine tools.

A firearm with ambidextrous bolt release mechanism includes a barrel and a bolt slideably mounted in the receiver for axial movement between forward closed breech position in battery with the barrel and a rearward open breech position. A recoil spring biases the bolt forward. A side-mounted bolt catch lever is configured and operable to selectively hold the bolt in the open breech position, and disengage the bolt to reclose the breech when manually actuated. A transversely movable actuator plunger allows a user to release the bolt from the side of the firearm opposite the bolt catch lever side. The plunger comprises an inclined camming surface which slideably engages a mating inclined camming ramp on the lever. Wedging action applied to the bolt catch lever by the plunger rotates the lever about its pivot axis to disengage and release the bolt.

A powered fastener driver including a driver blade movable from a top-dead-center position to a bottom-dead-center position for driving a fastener into a workpiece. A driver may include a lifting assembly for providing torque to move the driver blade from the bottom-dead-center position toward the top-dead-center position, the lifting assembly including a rotary lifter configured to be selectively engageable with the driver blade, the rotary lifter having a plurality of lift pins and a roller disposed on at least one of the lift pins, wherein the roller includes a plurality of cam portions defined by cup-shaped recesses having a first radius oriented parallel to a rotational direction of the roller and a second radius perpendicular to the first radius, and wherein the driver blade includes a lift tooth having a crown disposed thereon, the crown configured to be engaged with at least one of the plurality of cam portions.

The invention provides a vacuum circuit breaker with an isolating switch, which comprises a switch body and an anti-misoperation device, the anti-misoperation device comprises a first cam and an interlocking plate, the first cam is fixed on an isolating main shaft and rotates along with the isolating main shaft in a linkage manner, the interlocking plate is movably mounted on the switch body, and when the isolating main shaft is in a switching-off position, the interlocking plate rotates along with the isolating main shaft. The interlocking plate is driven by the first cam to be in a locking position, so that the interlocking plate is matched with the handle of the circuit breaker to be locked, the circuit breaker is prevented from being switched on, the situation that maintenance personnel can still manually drive the circuit breaker to be switched on when the disconnecting switch and the circuit breaker are both in a switching-off state in the prior art is avoided, unnecessary operation is prevented, and time and labor are saved; in addition, when the isolating switch is in a closing position, the isolating main shaft drives the first cam to rotate, the interlocking plate is separated from the circuit breaker handle under the acting force of the elastic piece, and the circuit breaker can be closed.

The invention discloses a continuous rotary discharging ceramic green body rolling forming device, and relates to the technical field of ceramic green body rolling forming, the continuous rotary discharging ceramic green body rolling forming device specifically comprises a rolling frame, a transverse driving table and a vertical driving table, the transverse driving table is installed at the top of the rolling frame, and the vertical driving table is installed at the top of the transverse driving table; the top of the vertical driving table is slidably connected with a sliding base plate. Through the 120-degree intermittent rotation design of the rotary table, circulating switching of the three stations of blank adding, rolling forming and discharging is achieved, the neutral position period of shutdown blank taking in the traditional technology is eliminated, compared with the prior art, the ceramic blank rolling forming efficiency is improved by 20%, uninterrupted continuous production is achieved, meanwhile, traditional pressing contact type rolling forming is different, and the production efficiency is improved. A mechanical linkage mechanism, a cam, a U-shaped tilting rod and a toothed plate are adopted to automatically control lifting and rotation of a female die, and a driving assembly is matched to drive a male die to synchronously rotate, so that the rolling precision is ensured.

The invention discloses a movable adsorption machine for waste gas treatment, and belongs to the technical field of waste gas treatment.The movable adsorption machine comprises an outer box body and brake wheels installed at the bottom of the outer box body, a gas inlet pipe is installed at the upper end of the outer box body, a filter plate is arranged below the gas inlet pipe, and a communicating pipe is arranged at the lower end of the filter plate; adsorption columns are inserted into the communicating pipes, the communicating pipes are arranged at the upper ends and the lower ends of the adsorption columns, the communicating pipes at the lower ends of the adsorption columns are connected with negative pressure generation equipment through drainage pipes, an exhaust pipe is installed at the upper end of the negative pressure generation equipment, and a power cam is arranged between the adsorption columns. According to the mobile adsorption machine for waste gas treatment, the filter plate can be cleaned in a manner of electrostatic dust adsorption and reverse blowing, the phenomenon that mesh holes in the filter plate are partially blocked by adopting a brush plate is prevented, meanwhile, harmful substances in waste gas can be adsorbed by arranging activated carbon particles, and the adsorption treatment effect on the waste gas is improved.

The invention belongs to the technical field of wood sawing, and particularly relates to wood sawing and segmenting equipment based on papermaking raw materials and an operation method thereof.The wood sawing and segmenting equipment comprises a base, a sliding plate is slidably connected to the top of the base, two supports are fixedly connected to the top of the sliding plate, and a supporting plate is rotatably connected between the two supports; according to the wood sawing and segmenting equipment based on the papermaking raw materials and the operation method of the wood sawing and segmenting equipment, a hydraulic cylinder controls a guide wheel to be pushed upwards, one side of a supporting plate tilts upwards, then a chain is in an inclined state, and after the chain tilts, logs slide downwards under the action of gravity and then are attached to a push plate; when the logs are conveyed upwards in an inclined mode, a third motor controls a cam to rotate, the cam is matched with a square groove, a chain swings left and right, the supported logs can be corrected through swinging of the chain, and the situation that the logs cannot be corrected due to the fact that the friction force between the logs and the chain is too large after the logs are inclined is avoided.

The utility model belongs to the technical field of drilling machine drill rod positioning, and particularly relates to a drilling machine drill rod positioning device which comprises a base, a lifting plate is placed on the base, a ground nail penetrates through a first rod hole of the lifting plate, a fixing block is welded to the top side of the ground nail, and the fixing block is fixedly connected with the top side of the lifting plate. The ground nail is assembled in a second rod hole of the base, two sets of grooves are symmetrically formed in the base, two sets of cushion blocks are symmetrically installed on the base, two sets of connecting rods are rotatably installed on the cushion blocks, a pinch bar is rotatably installed at the other ends of the connecting rods, a spring is installed on the pinch bar, and a limiting groove is formed in the supporting frame. A lifting plate is assembled in a limiting groove, a ripping bar is held, the ripping bar rotates around a cushion block, the bottom end of the ripping bar upwarps the lifting plate, the lifting plate drives a ground nail to vertically move upwards, the ground nail is rapidly pulled out, the device is conveniently disassembled, and the convenience of disassembling the device is improved.

The invention relates to the technical field of index plates, in particular to a high-efficiency inclined double-shaft index plate which comprises a first rotating assembly and a moving unit. The first rotating assembly comprises a first index plate and a first cam shaft, and a plurality of first rolling wheels capable of sliding along a preset movement track are evenly distributed on the outer wall of the first index plate in the circumferential direction; a first cambered surface cam is fixedly wound on the first cam shaft, a continuous curved surface groove is formed, and the first roller is embedded into the curved surface groove. The moving unit can drive the first roller to slide on the first index plate along the preset movement track so as to change the contact position of the first roller and the globoidal cam when the first cam shaft stops rotating, and the situation that when the working platform is located at the specific angle for a long time, the meshing area of the first roller and the first globoidal cam is excessively abraded due to long-term unbalance loading is avoided; the abrasion degree is reduced, and the service life of the first index plate and the first cam shaft is prolonged.

The utility model provides a nut grabbing storage device, which relates to the technical field of bolt dismounting, and comprises a first storage device, the first storage device comprises a storage tail end which is vertically arranged and is used for storing nuts, the side wall of the upper end of the storage tail end is provided with a first passing window for the nuts to pass through, and a second passing window is arranged on the side wall of the lower end of the storage tail end. A first grabbing device is installed on the inner side of the first passing window, and the first grabbing device stretches into the nut to grab the nut. The grabbing device comprises a grabbing body, a connecting rod and a grabbing cam, the grabbing cam is fixed to the first end of the connecting rod, and the grabbing body controls the connecting rod to move in the axis direction and rotate around the axis. According to the automatic nut grabbing and storing device, automatic grabbing and storing of nuts are achieved, manual picking is replaced, and the efficiency of bolt disassembling action is improved.

A tool operable to expand an end of a pipe, such as copper tubing, has a cylindrical jaw assembly with semi-cylindrical jaws movable between a closed position and an expanded position and rotatable about a longitudinal axis. A motor drives an output spindle driven by the motor, which in turn drives a radial cam. A wedge is movable by the radial cam in a reciprocating motion along the axis, causing the wedge to move between a first position where the jaws are in the closed position and a second position where the jaws are in the expanded position. A rotating ring is mounted on the wedge and connected to the jaws. The rotating ring is driven by the output spindle for rotating the jaws about the axis.

An on-load tap-changer includes: a tap-changer body and a driving mechanism fixed on the tap-changer body. The tap-changer body includes a housing, multiple insulation fixing plates, multiple turntables, each of which includes a sheave and a cam plate, the cam plate of which is rotatably connected to the insulation fixing plate, and the sheave of which is connected to the driving mechanism, multiple vacuum tubes fixed on the multiple insulation fixing plates, and multiple transmission mechanisms, each of which includes a lifting lever and a reverse spring. When the driving mechanism drives the sheave to regulate voltage, the cam plate is synchronously driven to rotate, and then the vacuum tube is driven by the lifting lever and the reverse spring to achieve on / off arc extinction, thereby achieving on-load voltage regulation.