54results about How to "Stable contact force" patented technology

A method of tracking and acting on events related to the delivery of a mail piece is provided. An integrated record associated with an addressee of a mail piece is created. The mail piece is given a unique identifier, is associated with the addressee, and is placed in a mail stream with the date and nature of associated delivery events being recorded. After a predetermined delivery event occurs, a follow-up communication is transmitted to the addressee, and the date of this follow-up communication is recorded. The date of any response by the addressee to the follow-up communication is also recorded. To the integrated record associated with the addressee is added the date and nature of the delivery events associated with the mail piece, the date of the follow-up communication, and the date of any response by the addressee to the follow-up communication.

The invention discloses a self-adaptive adjusting method based on a multi-degree-of-freedom adjusting mechanism of grinded / polished workpieces. The parallelism of upper and lower surfaces of the workpieces is measured; the surfaces of classification polishing discs are finished; an image acquiring analysis system acquires images of the surfaces of the classification polishing discs, and generates three-dimensional topography data of the surfaces of the classification polishing discs; meanwhile, the workpieces with fixed gestures are contacted with the rotating classification polishing discs; a high-precision three-dimensional pressure sensor system acquires force stressed on the workpieces; the surface topography characteristics of the classification polishing discs are obtained by using the force; two surface topography data are synthesized to plan workpiece machining poses so as to generate workpiece pose conversion data; and the workpiece machining positions and gestures are controlled according to the generated workpiece pose conversion data. The method can effectively improve the parallelism of the upper and lower surfaces of the workpieces, adjusts the workpiece space poses in real time, and guarantees constant contact pressure in workpiece machining to obtain the workpieces with smooth and nondestructive surfaces and good shape surface precision.

The invention discloses a curved surface profile constant force tracking method based on non-linear double closed loop control, and the method comprises the steps: according to a curved surface profile tracking motion model, force analysis is performed on a model of the contact force between a tool end and a work piece, a relation between an actual motion inclination angle and a normal contact force error and a double closed loop force control method can be obtained through the force analysis and a motion coordinate transformation formula; according to the double closed loop force control method, a control flow of a non-linear PID force controller and a non-linear PID control formula can be obtained, a motion controller can be adopted to control motion of three motion mechanisms in three coordinate directions, so that the tool end can track unknown curve surface profile motion with constant normal contact force. The invention also provides an application device for realizing the method, the device comprises a control part and a mechanical part, the control part comprises a PC host, an embedded motion controller, a terminal board, a signal amplifier, a three-dimensional force sensor, a server driver and a three-coordinate drive and transmission mechanism, and the mechanical part comprises a work rack, movement mechanisms in x, y and z axis directions arranged on the work rack, a sensor clamping rack, a processing tool and a work piece holder for clamping a curved surface part.

The invention relates to a snap-through rotary switch. A locking device is arranged on a moving contact frame, a locking structure is arranged on a middle seat; an unlocking device and an elastic assembly are arranged between a movable frame and the moving contact frame; when a rotary assembly rotates within a threshold value range, the moving contact frame is locked on the middle seat under cooperation of the locking device and the locking structure, and the movable frame moves relative to the moving contact frame to compress the elastic assembly so that the elastic assembly can store energy; when the rotary assembly rotates to a threshold value point, the unlocking device drives the locking device to break away from the locking structure, and the moving contact frame moves under the energy storage action of the elastic assembly to drive a moving contact to make contact with or break away from a static contact. The elastic assembly serving as an energy storage device is matched with the locking device and the unlocking device, the moving contact can rapidly break away from or make contact with the static contact, and therefore the contacting force of the moving contact and the static contact of the snap-through rotary switch is stable.

A MEMS switch includes a lower substrate having a signal line on an upper surface of the lower substrate; an upper substrate, having a cavity therein, disposed apart from the upper surface of the lower substrate by a distance, and having a membrane layer on a lower surface of the upper substrate; a bimetal layer formed in the cavity of the upper substrate on the membrane layer; a heating layer formed on a lower surface of the membrane layer; and a contact member formed on a lower surface of the heating layer. The contact member can come into contact with or separate from the signal line. A method for manufacturing the MEMS switch includes preparing the upper and lower substrates and combining them so that a surface having the signal line faces a surface having the contact member and the upper and lower substrates are disposed apart by a distance.

The invention discloses an injection moulding machine which includes a die locking system and an injection moulding system, wherein the die locking system includes a fixed die plate. The injection moulding system is provided with a servo hydraulic system which is used for driving the injection moulding system to move relative to the fixed die plate. The servo hydraulic system includes a total-moving oil cylinder and a total-moving oil cylinder hydraulic control mechanism which are communicated with each other through an oil pipe. The injection moulding machine is high in universality, is high in sensitivity and control precision, can alleviate nozzle abrasion and prevent rubber leakage, is better in die compatibility and technological adaptability and is low in cost.

The invention discloses a coaxial probe short-circuit mechanism and an operation method thereof. The coaxial probe short-circuit mechanism structurally comprises a coaxial probe, a short-circuit plate, a base, a cover board and a cushion block, wherein the short-circuit plate is made of a flexible conductive material, and is fixedly arranged on the cushion block; a probe limiting hole through which the coaxial probe passes is formed in the base; and a limiting sliding block for locking the coaxial probe is also arranged on the base. The limiting sliding block is pressed to slip downwards in an operation; an open end of the coaxial probe simultaneously passes through the probe limiting hole and a through hole in the limiting sliding block; the short-circuit plate is pressed by the open end of the coaxial probe; the limiting sliding block is loosened; a sliding block spring rebounds; and the limiting sliding block slips upwards, so that locking and limiting of the coaxial probe are achieved. According to the coaxial probe short-circuit mechanism, a good contact can be formed by the open end of the coaxial probe and the short-circuit plate; the service lifetime of the short-circuit plate is prolonged; the clamping operation is convenient, fast and reliable; and the consistency of multiple calibrations is good.

The invention relates to an automatic control device and control method for converting contact force into displacement during electric spark deposition bead weld. The automatic control device mainly comprises a feeding mechanism, a floating elastic mechanism, a gun clamping mechanism, a welding gun, an electric control system and the like and converts the contact force between an electrode and a workpiece into displacement of a floating sliding table. A non-contact displacement sensor is adopted for detection, conversion from tension and pressure measurement to displacement measurement is achieved, the strength of a mechanical system is improved, and measurement of micro contact force can be achieved. The contact force between the electrode and the workpiece is determined according to the displacement of the floating sliding table, a controller and the feeding mechanism are used for controlling the electrode to move along the axis of the electrode, closed-loop control over the contact force is achieved, and vibration between the electrode and the workpiece can be reduced through spring damping of the floating elastic mechanism; and the stability and reliability of automatic control of the contact force between the electrode and the workpiece in the deposition process are remarkably improved.

A cup seal 21 includes a base portion 21a disposed on a cylinder bore opening portion side of a seal groove, and an inner lip portion 21b extended from an inner circumferential side of the base portion toward a cylinder bore bottom portion and having an inner circumferential surface slidably abutting against an outer circumferential surface of a piston. In a state where the cup seal 21 is fitted into the seal groove and a plunger 19 is inserted into a cylinder bore 12, an abutting force maximum portion 21m where an abutting force against the plunger 19 becomes maximum within an inner circumferential surface of the cup seal 21 is provided on an end portion on the cylinder bore opening portion side of an inner circumferential surface part of the base portion 21a.

The invention discloses a differential clamping inchworm-type piezoelectric linear motor. The motor comprises four clamping discs, an actuating module, two guide mechanisms, two connecting rods and two connecting springs. The four clamping discs, the two connecting rods and the two connecting springs form two units. The four clamping discs are all provided with center holes, the two clamping discsof each unit sleeve the connecting rods through the center holes, the two clamping discs included by each unit are divided into a main clamping disc and an auxiliary clamping disc, the main clampingdiscs are fixedly connected with the actuating module, and the auxiliary clamping discs are connected with the main clamping discs through the connecting springs; the four clamping discs are equal inshape and comprise circular discs, and piezoelectric ceramics are eccentrically arranged on the circular discs of the four clamping discs; each guide mechanism comprises a C-shaped sleeve, a guide rail is convexly arranged on the inner wall of the sleeve, and guide grooves are concavely arranged on the peripheral walls of the four clamping discs; the two units are respectively arranged in the twosleeves, and pre-tightening elements are additionally arranged to press the sleeves on the four clamping discs so that the guide rails are matched with the guide grooves. The contact force of the motor is stable during the working process.

The invention provides an energy-saving anti-falling vertical elevator. A sensor detects the weight of a borne object in an elevator car and transmits a weight sensor to a controller, the controller controls a sliding power device to drive a first adjusting driving single body and a second adjusting driving single body, so that the first adjusting driving single body and the second adjusting driving single body drive a first balance adjusting executing single body and a second balance adjusting executing single body respectively to perform balance adjustment, a balance weight device and the elevator car achieve balance, an elevator car lifting driving motor can lift the elevator car by only providing a small traction force, a traction rope winding twisting force of the elevator car liftingdriving motor can further be greatly alleviated while the energy consumption of the elevator car lifting driving motor is reduced, a traction rope is not subjected to stress concentration and thus does not undergo damage such as breakage, the service life of the traction rope is greatly prolonged, and the elevator car does not drop easily.

An electric connector with strengthened clamp capability, comprising of: the main body seat, the camouflage crust, the plural number of conducting terminal, and the clamp groupware. The clamp groupware fixes on the main body seat corresponding with the conducting terminal, the camouflage crust tables the main body and covers the outside of the main body seat with the opposite direction of the clamp groupware inserting direction; the clamp groupware sets the plural number of the press-connecting slice, which forms the superposition in the main body seat with the spring slice of the camouflage crust and interferes at the first direction mutually, in order that the clamp groupware and the camouflage crust is not easy to deviate from the main body seat or create the displacement.

The invention provides an anti-falling vertical elevator. A sensor detects the weight of a borne object in a car, and a weight signal is transmitted to a controller; the controller controls a sliding power device to drive a first adjusting drive monomer and a second adjusting drive monomer, so that the first adjusting drive monomer and the second adjusting drive monomer drive a first balance adjusting execution monomer and a second balance adjusting execution monomer correspondingly to carry out balance adjusting, and a balance weight device and the car are balanced; a car lifting drive motor enables the car to ascend and descend simply by providing small traction force, energy consumption of the car lifting drive motor is reduced, and meanwhile the twisting force of the car lifting drive motor on traction rope winding can be greatly relieved; and a traction rope cannot suffer from stress concentration and is not prone to suffering from damage of breaking and the like, the service life of the traction rope is greatly prolonged, and falling and other situations are not prone to happening to the car.

A bush for holding first and second member includes a shaft portion having two ends, and a flange integrally formed on one of the two ends of the shaft portion to extend radially outwardly therefrom. The flange has at least one first pressing portion capable of deforming in an axial direction of the shaft portion for elastically pressing one of the two second member toward the other.

The invention discloses a shaft sealing assembly with large eccentricity resistance and low frictional resistance for a gearbox. The shaft sealing assembly comprises a main sealing element and a shaftsleeve sealing element, wherein the main sealing element comprises a first metal framework and a first sealing body; the outer side of the first metal framework is coated with the first sealing body;a main sealing lip sealed in the axial direction is formed on the first sealing body; the shaft sleeve sealing element comprises a second metal framework and a second sealing body; the outer side ofthe second metal framework is coated with part of the first sealing body; the main sealing element and the shaft sleeve sealing element are matched with each other in a press fitting and relative rotation manner, and the shaft sleeve sealing element converts radial sealing into axial sealing, and the situation that larger contact force is needed when radial sealing meets the requirement of large eccentricity is avoided, so that the frictional resistance is reduced while abrasion of the main sealing lip is slowed down; in addition, an elastic piece provides stable elastic force for the main sealing lip to make up abrasion of the main sealing lip and reduction of contact force caused by ageing of the sealing material, and stability of the contact force of the main sealing lip is ensured, sothat the service life of the product is prolonged to meet the requirement of 15 years.

The invention relates to a snake-like robot with uneven ground suitability. The robot is formed by connecting a plurality of joint modules, and comprises a control system, wherein each joint module comprises a body, each body is connected with the control system, the bodies of the joint modules are mutually connected, the lower part of each body is provided with a suspension system, each suspension system comprises two suspension subsystems, the suspension subsystems are symmetrically arranged at the left and right sides of each body, and respectively comprise a detection device and a guide rod, each guide rod is connected with each detection device, each detection device is connected with the control system, each suspension subsystem comprises a wheel frame which is arranged on each body, each wheel frame is provided with a slide block, each guide rod penetrates into each slide block, and can freely slide in each slide block, the lower ends of the guide rods of the suspension subsystems at the two sides are connected through wheel shafts, and each wheel shaft is provided with a wheel. The robot has the advantages that the structure of the joint modules of the snake-like robot is improved, the control method of the existing snake-like robot is simplified, and the suitability of the snake-like robot on the uneven ground is improved.

A method of tracking and acting on events related to the delivery of a mail piece is provided. An integrated record associated with an addressee of a mail piece is created. The mail piece is given a unique identifier, is associated with the addressee, and is placed in a mail stream with the date and nature of associated delivery events being recorded. After a predetermined delivery event occurs, a follow-up communication is transmitted to the addressee, and the date of this follow-up communication is recorded. The date of any response by the addressee to the follow-up communication is also recorded. To the integrated record associated with the addressee is added the date and nature of the delivery events associated with the mail piece, the date of the follow-up communication, and the date of any response by the addressee to the follow-up communication.

The invention relates to an automatic control device and a control method for the displacement displacement of the contact force of EDM surfacing, wherein the automatic control device is mainly composed of a feed mechanism, a floating elastic mechanism, a gun clamp mechanism, a welding torch and an electric control system, and the electrode and the workpiece The contact force between them is transformed into the displacement of the floating slide table, and the non-contact displacement sensor is used for detection, which realizes the transformation from tension pressure measurement to displacement measurement, which not only improves the strength of the mechanical system, but also realizes the measurement of tiny contact force; according to the floating The displacement of the sliding table determines the contact force between the electrode and the workpiece, and the controller and the feed mechanism are used to control the movement of the electrode along its axis to realize the closed-loop control of the contact force. The spring damping of the floating elastic mechanism can reduce the distance between the electrode and the workpiece. The vibration between the electrode and the workpiece significantly improves the stability and reliability of the automatic control of the contact force between the electrode and the workpiece during the deposition process.

The invention relates to a probe device and ultrasonic inspection equipment, which are used in the medical industry. The ultrasonic inspection equipment and the probe device are provided with a connecting piece between the contact part and the fixed part, and the contact part is adjusted in the height direction of the probe through the connecting piece. height position, so that the contact force between the contact part and the human body remains stable, and the movement of the probe device is basically kept in a translational state, which will not affect the quality of the collected image due to the curved movement of the contact part on the human body; or, the Ultrasonic inspection equipment and probe device design the side wall of the contact part as an elastic wall that can stretch and deform along the height direction of the probe to adjust the position of the contact part, so that the contact force between the contact part and the human body remains stable and the probe The movement of the device is basically maintained in a translational state, and the collected image quality will not be affected due to the curvilinear motion of the contact part on the human body.

The invention discloses a snake robot with the ability to adapt to uneven ground. The snake robot comprises a snake head and a plurality of joint modules sequentially connected end to end, wherein each joint module comprises a body, a wheel located below the body, and a self-adapting suspension system for connecting the body to the wheel and detecting a contact condition between the wheel and the ground; every two adjacent joint modules are connected by a joint rotating shaft; each joint rotating shaft is driven by a joint motor mounted on each joint module; a joint motor controller is also arranged on each joint module; the joint motor controllers receive contact signals of the self-adapting suspension systems and control the joint motors; and a complete machine controller for controlling the joint motor controllers is arranged on the snake head. Contact forces between the wheels of the snake robot and the ground can be effectively controlled, and the normal operation of the snake robot on the uneven ground is ensured.

The invention discloses a constant pressure polishing method and device for glass periphery. The present invention obtains the unit vector of the machining direction according to the machining path and the current position of the polishing wheel, obtains the unit vector of the pressure compensation direction according to the unit vector of the machining direction, collects the torque data of the spindle drive, and based on the PID control algorithm, according to the preset Comparing the torque data and torque data, the pressure compensation increment of the polishing wheel is obtained. According to the unit vector of the pressure compensation direction and the sum of all pressure compensation increments under the current wear compensation cycle, the position compensation increment of the polishing wheel is obtained. The position compensation increment controls the adjustment of the polishing wheel from the current position to the compensated position, so that the polishing wheel polishes the glass at the compensated position, and repeats the above operations until the polishing of the glass is completed. Constant pressure polishing improves polishing quality on the premise of ensuring machining accuracy.

The invention discloses an embedded rail transit power supply system which consists of electric conductors and supporting rod assemblies, wherein a current collector assembly in each electric conductor is located in a wear-resistant wall. The current collector is located in the wear-resistant wall, so that influence caused by factors such as natural conditions, train vibration as a result of unevenness of rails and the like is avoided, the current-receiving quality is stable, and accidents of arc ablation of the current collector, the wear-resistant wall and the like are avoided, and meanwhile, the impact effect on the current collector by an end elbow is eliminated, so that the traffic safety is ensured. The electric conductors of the embedded rail transit power supply system can be arranged in a cross manner at the same height, so that cross-through is realized; and fractures are naturally formed at intersections of different lines, so that the purpose of isolating different electric subsections is achieved, thereby facilitating the whole line layout.

The invention provides a high efficiency and lower consumption anti-falling vertical elevator. A sensor is used for detecting the weight of an object borne in a lift car, and a weight signal is transmitted to a controller; the controller controls a sliding power device to drive a first adjusting driving monomer and a second adjusting driving monomer, so that the first adjusting driving monomer andthe second adjusting driving monomer can drive a first balance adjusting executing monomer and a second balance adjusting executing monomer correspondingly to perform balance adjusting, and a balanceweight device and the lift car are made to achieve balance; a lift car rising and falling driving motor can make the lift car rise or fall just by providing very small traction force; the twisting force of the lift car rising and falling driving motor on winding of a traction rope can also be greatly relieved while the energy loss of the lift car rising and falling driving motor is reduced; it isavoided that the traction rope suffers from stress concentration, and therefore the traction rope is not prone to breakage or other damage; and the service life of the traction rope is greatly prolonged; and the lift car is not prone to the conditions of falling and the like.

The invention discloses a self-adaptive adjusting method based on a multi-degree-of-freedom adjusting mechanism of grinded / polished workpieces. The parallelism of upper and lower surfaces of the workpieces is measured; the surfaces of classification polishing discs are finished; an image acquiring analysis system acquires images of the surfaces of the classification polishing discs, and generates three-dimensional topography data of the surfaces of the classification polishing discs; meanwhile, the workpieces with fixed gestures are contacted with the rotating classification polishing discs; a high-precision three-dimensional pressure sensor system acquires force stressed on the workpieces; the surface topography characteristics of the classification polishing discs are obtained by using the force; two surface topography data are synthesized to plan workpiece machining poses so as to generate workpiece pose conversion data; and the workpiece machining positions and gestures are controlled according to the generated workpiece pose conversion data. The method can effectively improve the parallelism of the upper and lower surfaces of the workpieces, adjusts the workpiece space poses in real time, and guarantees constant contact pressure in workpiece machining to obtain the workpieces with smooth and nondestructive surfaces and good shape surface precision.