76results about How to "Large travel range" patented technology

Apparatus and method for surgeon-assisted rapid surgical implantation of devices into soft tissue. The apparatus comprises several subsystems that enable the referencing of the spatial position and orientation of the device being implanted with respect to the soft tissue into which it is being implanted and then the controlled implantation of the device at a predefined speed with higher positional accuracy and precision and a reduction in soft tissue damage, provided by ultrasonic assisted motion, compared to current state-of-the-art implantation methods and devices. The method includes automated loading of the device being implanted into a clamping mechanism from a cartridge holding a number of implants, referencing of the device position and orientation, referencing of the surface of the tissue into which the device is being implanted, monitoring of the tissue motion, identification of desirable implant location based on the soft tissue profile, allowance of surgeon selection and fine adjustment of the final implant location, high-speed implantation, device release and implant actuator retraction.

A cradle drive mechanism is provided. The cradle drive mechanism includes a drive motor, an intermediate frame and a screw and nut transmission device driven by the drive motor so as to drive linear reciprocating motion of the intermediate frame. The cradle drive mechanism also includes a rotating, shaft having a first driving wheel and a gear, a transmission belt, and a rack meshed with the gear so that, during linear reciprocating motion of the intermediate frame, the rack forces the gear to rotate and drive rotation of the first driving wheel, wherein rotation of the first driving wheel drives rotation of the transmission belt. The cradle drive mechanism also includes a cradle connector fixed on the transmission belt and configured to connect a cradle and to drive linear reciprocating motion of the cradle.

The invention relates to a five-axis numerical control engraving and milling machine for a tire sidewall plate. An upright post moves forwards and backwards on a transverse sliding seat to form a first linear axis; the transverse sliding seat moves leftwards and rightwards on a pedestal to form a second linear axis; a dragging plate of the upright post moves up and down along the upright post to form a third linear axis; a numerical control rotary table is arranged on a supporting seat to rotate circumferentially to form a fourth axis; and a spindle swinging head is arranged on the dragging plate of the upright post to rotate circumferentially and swing to form a fifth axis. The five-axis numerical control engraving and milling machine has the advantages of low manufacturing cost, high processing precision, high processing speed, high dynamic performance, large travel range, small occupied area of a machine tool, convenient manufacture and assembly, attractive structure, light and convenient operation, high sealing property and good dust-proof effect.

The invention relates to a CCD focusing mechanism for a visible optical imaging system, and belongs to the field of adjustment for compensating camera focal plane defocusing. The CCD focusing mechanism is provided in order to solve a technical problem of camera focal plane defocusing of a visible television measuring system, and is characterized in that a stepper motor drives a lead screw shaft, a CCD mounting base is driven through transmission of a lead screw nut, the CCD mounting base slides on a guide rail through a guide rail sliding block, a linear potentiometer detects the position of the CCD mounting base in real time, and the CCD focusing mechanism for the visible light imaging system realizes translation focusing. The CCD focusing mechanism can operate steadily and smoothly within a range of -40 DEG C and +60 DEG C, does not get stuck, has the prominent advantages of high focusing accuracy, high carrying capacity, large stroke range and good environment adaptability, and can be applied to adjustment and compensation for camera focal plane defocusing caused by the factors such as the temperature, acting target distance variations, air pressure and vibration.

The invention discloses a novel transmission system of an electric long sliding rail, The sliding rail assembly comprises a left rail assembly and a right rail assembly, the left rail assembly comprises a slidably connected upper left rail and a lower left rail, the right rail assembly comprises a slidably connected upper right rail and a lower right rail, and the system comprises a slidably connected bridge with left and right sides fixed above the upper left rail and the upper right rail, respectively; A rack horizontally fixed in the inner grooves of the left lower rail and the right lowerrail; A driving motor connected to a middle lower surface of the slide rail connecting bridge; A transmission rod with a middle part connected with an output end of the drive motor; The transmission module comprises a housing, a driving gear and an output gear, wherein the output gear comprises an integrally formed meshing gear and a transmission gear. The transmission module is fixed inside the left upper rail and the right upper rail, respectively. The invention avoids the deflection problem of the filament rod in the long-stroke transmission, and effectively avoids the generation of abnormal sound.

The invention relates to an elevating mechanism for a cutting machine head of a five-axis steel tube intersecting line, wherein, an upright column is arranged on a longitudinal moving part of the cutting head, and the front surface of the upright column is fixedly equipped with a front screw rod axle seat, a rear screw rod axle seat, a fixed motor, a reducer and a screw rod; and the upright column is connected with a lifting board through a linear guide rail pair and a limit device, and the back side of the lifting board is provided with nuts which are meshed with the screw rod. By means of control by a precise linear guide rail pair, a precise ball screw pair, a contact and inductive up-and-lower limit switch and a full closed-loop AC servo motor, the elevating mechanism achieves fast elevating speed, accurate location, simple and convenient assembly, stable and reliable mechanical action, good machining accuracy, high cutting efficiency and larger elevating load-carrying capacity, wherein, the linear guide rail pair enlarges the travel range of the cutting head which reaches 300mm.

The invention discloses a Z-axis positive direction amplifying one-dimensional precise positioning platform. The positioning platform comprises a base, an amplifying mechanism, a movement platform, piezoelectric ceramic and a pre-tightening mechanism, wherein the amplifying mechanism comprises a flexible arm, a first connecting part, a second connecting part and fixing parts; the fixing parts are arranged at two ends; one side of the movement platform pushes against the first connecting part; a platform bearing surface is formed on the other side of the movement platform; the piezoelectric ceramic is arranged between the first connecting part and the second connecting part; one end of the piezoelectric ceramic pushes against the pre-tightening mechanism; the other end of the piezoelectric ceramic pushes against the fixing parts; the pre-tightening mechanism is arranged in the fixing part at one end and comprises a pre-tightening nut and a steel ball; the steel ball pushes against the piezoelectric ceramic; the pre-tightening nut provides pre-tightening force for the piezoelectric ceramic through the steel ball. The Z-axis positive direction amplifying one-dimensional precise positioning platform provided by the invention has the advantages of large stroke range, high precision, simple structure, small size, high rigidity, high sensitivity, very high resolution, nano level, suitability for serving as a micro-positioning platform and the like.

The fuel injection apparatus has a pump unit (39), which pumps fuel at high pressure into a high-pressure conduit (10) communicating with an injection valve (1), and having a control valve (11), in which a pistonlike valve member (14) is guided with a sealing portion (114) in the bore (26), the sealing portion (114) being surrounded by a high-pressure chamber (16) that communicates with the pump work chamber (48). With one end, the valve member (14) protrudes one low-pressure chamber (18), which communicates with a fuel delivery system (58). A valve seat (22) is embodied in the bore (26) and cooperates with a valve sealing face (24), embodied on the valve member (14), to control the communication between the high-pressure chamber (16) and the low-pressure chamber (18). In terms of the fuel flow direction from the high-pressure chamber (16) to the low-pressure chamber (18), a throttle portion (21) is embodied in the bore (26) upstream of the valve seat (22) and with the sealing portion (114) of the valve member (14) forms a throttle gap (23), thus upon the opening stroke motion throttling the fuel flow in a stroke range of the valve member (14), so that upon the opening stroke motion of the valve member (14), no additional hydraulic forces can act on the valve member (14).

The invention belongs to the technical field of robots and particularly relates to a circular gantry robot moving system. The circular gantry robot moving system comprises a circular outer beam, fixing stand columns, robot executing terminals, a lifting inner circular module, beam modules and Z-axis modules, wherein the circular outer beam is supported by the fixing stand column; the inside of thecircular outer beam are circumferentially provided with a plurality of the beam modules, one end of every beam module is slidingly connected with the circular outer beam, the other end of the beam module extends towards the center of the circular outer beam, and the beam modules can move circumferentially; the lifting inner circular module is arranged inside the circular outer beam for support the other ends of the beam modules; every beam module is provided with a corresponding Z-axis module capable of moving radially; the robot executing terminals are vertically movably arranged on the Z-axis module. The circular gantry robot moving system can ensure the precision of axes under different conditions guarantee that the executing mechanism are mounted at the tail end the Z-axis, and through coordination in three directions, achieving movement to any position within a walking space range.

A mechanical arm driven in a compound manner comprises double slide arms and drive devices. The double slide arms include the outer slide arm and the inner slide arm embedded in the outer slide arm and connected with the outer slide arm in a sliding manner. The outer slide arm is connected with a slide rail base through slide rails in a sliding manner. The drive devices are installed on the slide rail base and include the first drive device and the second drive device. The first drive device comprises a servo motor, a speed reducer and a belt wheel I. The servo motor drives a conveyor belt I through the speed reducer and the belt wheel I so that an outer profile can be driven to slide up and down. The second drive device comprises a cylinder. A piston rod of the cylinder is connected with the outer profile and pushes the outer profile to slide. Two belt wheels II are arranged on the outer profile. A conveyor belt II is assembled between the belt wheels II. The inner side of the conveyor belt II is fixed to an inner profile, and the outer side of the conveyor belt II is fixed to the slide rail base. The outer profile moves up and down so as to drive the inner profile to move up and down at a double speed relative to the outer profile. By means of the mechanical arm, the stroke is increased, space is saved, the operation precision and efficiency are improved, the material mass range is widened, and safety is high.

An adjustable width chuck assembly for a tire testing machine including upper and lower relatively movable rims by which a tire is clamped and held during a testing cycle. A pilot or nose cone forming part of one of the rims is gas pressure biased towards engagement with complementally formed structure on the other rim. The gas pressure bias is provided by a gas spring which can be replaced with gas springs of differing pressures in order to adjust the biasing force or, alternately, the gas spring can be removed from the chuck assembly and re-pressurized to a different level in order to change its biasing force. The use of a gas spring for providing the necessary biasing force expands the range of motion for the nose cone, thus allowing a given chuck assembly to accommodate tires having a wide range of bead widths.

The invention provides a correction clamp for a machining center. The correction clamp comprises a shaft, a radial bracket and a movable slide block; the radial bracket is fixed at an end part of the shaft; the movable slide block is mounted on the radial bracket through a locking mechanism; and a dial indicator is mounted on the movable slide block. When the correction clamp is mounted on a knife handle, the center of a hole can be aligned quickly, and the efficiency is high; one set of correction clamp can be suitable for measuring ranges of various specifications, and the travel range of datum correction is wide; and the cost is low and the use is convenient.

The invention discloses an anti-settling multilayer spiral pole plate damper based on giant electrorheological fluid, and relates to the technical field of dampers. The damper comprises an outer cylinder, an upper end cover is arranged at the upper end of the outer cylinder, a lower end cover is arranged at the lower end of the outer cylinder, a floating piston connected to the outer cylinder in a sliding mode is arranged in the outer cylinder, a compensation cavity between the floating piston and the lower end cover is filled with compressed air, a working cavity between the upper end cover and the floating piston is filled with the giant electrorheological fluid, a spindle structure is arranged in the outer cylinder, penetrates through the upper end cover and can slide relative to the upper end cover, a plurality of spiral blade pole plates and a plurality of electrode plates are arranged on the spindle structure in the circumferential direction, each spiral blade pole plate is connected to one electrode plate, and an anti-settling structure is arranged at the lower end of the spindle structure. The damper has the advantages of being simple in structure, high in response speed, light in weight, small in size, large in damping force and capable of automatically preventing settling.

The invention relates to the technical field of service robots, in particular to a service robot joint with variable stiffness, including a base, a drive unit, a position information collection unit, a rotary joint unit and a drive force collection unit, and the position information collection unit is coaxial with the upper end of the rotary joint unit Connection, the position information collection unit and the lower end of the rotary joint unit are respectively fixed on the base, the driving force collection unit is fixed on the rotary joint unit, one end of the driving unit is connected to the rotary joint unit, and the other end is connected to the driving force collection unit. The position information acquisition unit and the driving force acquisition unit are used to obtain the real-time stiffness of the variable stiffness joint system, and the accuracy of the stiffness of the flexible joint is guaranteed through a negative feedback system.

The invention discloses a butt-jointing positioning and locking mechanism for a large device. The butt-jointing positioning and locking mechanism comprises a base, and further comprises a main bracket, a top column bracket and a top column which are arranged on the base; the top column can slide in a cavity of the top column bracket, and an elastic part is arranged between the end surface of the top column and the end surface of the top column bracket; and a V-shaped clamping plate and a lock hook are arranged on the base, the V-shaped clamping plate and the tail end of the lock hook are connected with a second column pin which is arranged on the base and rotate around the second column pin, and a side plate of the lock hook is connected with an output end of an air cylinder through a first column pin. According to the butt-jointing positioning and locking mechanism, the stroke of a telescopic rod of the air cylinder is controlled relying on the position sensing of the air cylinder, and the rotation movement of the lock hook is achieved; and a closed circuit is formed by the lock hook and a V-shaped clamping lock, mechanical limiting is achieved without other limiting sensors, thecontrol system is simple, and positioning is accurate and reliable.

The invention discloses a polishing machine for processing stone materials. Hand wheel, angle adjustment wheel, the left side of the rotating arm is connected with the lifting transmission shaft, the lifting transmission shaft is provided with a lifting column and a positioning inner rod, the lifting transmission shaft is sleeved on the lifting column, and the lifting column and the lifting transmission shaft are excessively matched, the lifting The inside of the column is excessively matched with the positioning inner rod, and the positioning inner rod is electrically connected to the electric control seat. The rocker arm rotation mechanism is installed on the right side of the boom, the motor is installed above the rocker arm rotation mechanism, and the motor base is installed at the bottom of the motor. The side of the motor base The end is perpendicular to the fixed seat through the connecting rod, and the dust suction rod is arranged between the rocker arm rotation mechanism and the fixed seat. The present invention cooperates with the lifting transmission shaft and the rocker arm rotation mechanism to make the grinder rotate freely and has a large stroke range. , stable work, low grinding cost, high precision, and can be widely used.

A position-measuring device is used to detect the relative position of two machine components that are disposed in a manner allowing movement relative to each other at least along a first and a second main direction of motion in a displacement plane. The device includes at least one measuring standard, which is mounted on a first machine component. At least six scanning units are mounted on a second machine component, and are used for the optical scanning of the measuring standard in at least two measuring directions in the displacement plane. At least two scanning units are assigned to each measuring direction. The scanning units of each respective measuring direction in the displacement plane are disposed non-centrosymmetrically in relation to a center of the second machine component.

The invention discloses a beam lateral deviation pier stress self-balancing correcting device which comprises a pushing and moving system. The pushing and moving system is mounted on a beam and a capping beam, the capping beam supports the beam, the pushing and moving system comprises a translation jack, a digging line and an anchoring end, the translation jack is a centre hole jack and mounted onthe deviation side of the beam, one end of the digging line is connected with the translation jack, and the other end of the digging line is anchored on the non-deviation side of the capping beam through the anchoring end. The correcting device has the advantages of low cost, reasonable lateral pier stress, high correcting stroke and the like. The invention further discloses a method for correcting a deviation by the correcting device. The correcting method has the advantages that operating processes are simple, and labor and time are saved.

The invention relates to the field of automobile manufacturing and discloses an independent suspension system with invariable wheel tread and wheel base inclination parameters. When a connection hub at the top (102) of an A-shaped equal-arm lever swing arm (101) vertically swings along with ground up and down and under the counteraction force of a shock absorber (501), ends (204) and (205), in shaft connection with middle lever fulcrums (103) and (104) of the A-shaped equal-arm lever swing arm (101), of a U-shaped push-pull swing arm (201) are driven to swing around E. Bottoms (105) and (106)slide linearly when the A-shaped equal-arm lever swing arm (101) swings, and since an axis distance L2 is equal to L3 and L1, a vertical bounce trail of the top (102) of the A-shaped equal-arm lever swing arm (101) is always perpendicular to rotating axis E of (202) and (203) of the U-shaped push-pull swing arm (201). Wheels are kept in linear bounce along a perpendicular direction of an automobile body, a maximum contact area of tires and the ground is realized, and parameters including king pin inclination, wheel toe-in, outward inclination, wheel tread, wheel base and the like are kept unchanged. Therefore, controllability, safety, stability and comfort of automobiles are idealized.