51results about How to "Avoid transmission error" patented technology

The invention discloses a six-degree-of-freedom humanoid robot arm, and relates to a robot arm. The invention aims to solve the problems that the existing robot arm is cumbersome in joint structure, heavy in self weight, low in load bearing ratio and complicated to control. A shoulder rotating joint, a shoulder joint, an upper arm, an elbow rotating joint, a elbow swing joint, a fore arm, a wrist rotating joint, a wrist swing and a hand are sequentially arranged from top to bottom, wherein an arm swing motor is connected with a worm by virtue of a conveyor belt, an arm rotating motor is connected with a shoulder swing support by virtue of a conveyor belt, an upper arm shell is arranged between a shoulder joint and an elbow joint, an elbow rotating drive motor and a speed reducer are sequentially arranged in the upper arm shell from top to bottom, an elbow swing joint motor is arranged in an elbow joint shell and is connected with an elbow joint conveyor belt, an elbow joint speed reducer is arranged in the elbow joint shell, a hand connecting support is arranged between the fore arm and the hand, a wrist joint swing motor is arranged on one side of the hand connecting support, and a wrist joint rotating motor is arranged at the upper end of the hand connecting support. The six-degree-of-freedom humanoid robot arm is applied to a humanoid robot.

The invention discloses an automatic cylinder wall thickness measurement device based on a laser sensor. The device comprises a machine frame, a transmission unit, a rotating mechanism, a guide bearing mechanism and a measurement and adjustment mechanism. On one hand, the defect that a measurement instrument is abraded due to contact measurement is overcome, on the other hand, influences of unevenness of materials on measurement precision are avoided, measurement efficiency and precision are greatly improved, and automatic pipelining measurement is easy to achieve. The measurement device is improved in the following aspects: (1) the transmission structure of the measurement device and the motion relation between the laser sensor and a workpiece to be tested, (2) the distribution and automatic measurement feeding mode of the laser sensor, (3) automatic positioning, clamping and rotating of the workpiece to be tested and the anti-collapsing or anti-tilt structure, and (4) function extensibility, measurement universality and implantation of an automatic production line. The measurement device has the advantages of being simple in structure, high in reliability and easy to obtain.

The invention relates to a multifunction high-precision numerical control plasma machining device comprising a base and a machining platform with a nail bed structure. A Y-axis transmission mechanism and an X-axis transmission device are respectively arranged above and below the machining platform, wherein the Y-axis transmission mechanism is connected with a sheet cutting torch unit and a medium plate cutting torch unit which can be alternately used and are provided with infrared locating real-time tracking devices; a cutting torch formed by extending a Y-axis cross beam is provided with a pipe cutting torch unit matched with a pipe rotating mechanism; the X-axis transmission device and the Y-axis transmission mechanism respectively comprise a ball screw and a servo motor; the sheet cutting torch unit comprises a sheet cutting torch with a water spray cover; the medium plate cutting torch unit comprises an automatic arc voltage boosting Z-axis actuating mechanism and an arc voltage boosting anticollision clamp; and the pipe rotating mechanism comprises a lifting open and close roller wheel followup device and a big-power bearing block servo motor. The invention not only has stronger comprehensiveness, lower production cost, higher cutting precision, low noise, small vibration, high stability and higher cutting quality but also facilitates fine blowdown.

Disclosed is a rolling forming production line of square tubes of multiple specifications. The production line comprises a coiled-disc steel plate strip unwinding frame, a steel plate strip guide device, a steel plate leveling machine, a square tube double-top-side rolling unit, a square tube double-side-edge rolling unit, a square tube forming unit, a square tube top side welding machine, a weld line polishing machine, a square tube cooling groove, a square tube straightening unit and a square tube fixed-length cutting-off machine which are mounted on one straight line. A vertical locating frame and a horizontal locating frame are arranged in the steel belt strip guide device, and a pad roller and a hydraulic leveling roller are mainly mounted on a rack of the steel plate leveling machine; the internal structure of the square tube double-top-side rolling unit is similar to the internal structure of the square tube double-side-edge rolling unit, and the square tube double-top-side rolling unit and the square tube double-side-edge rolling unit are each provided with an upper rotating shaft and a lower rotating shaft; the lower rotating shafts are provided with folding mat wheels, and the upper rotating shafts are provided with rolling wheels; a servo motor is arranged on the rack; a mat wheel is arranged on a lower shaft of a square pipe forming machine, a rolling wheel is arranged on an upper shaft of the forming machine, and a side pressing wheel is arranged between the upper shaft and the lower shaft; after a welding machine conducts welding on square tube gaps, fixed-length cutting is carried out after polishing and cooling; and the production line is used for producing the square tubes, the efficiency is high, and the quality is good.

The invention discloses a force feedback main manipulator for minimally invasive surgery. The force feedback main manipulator comprises a first parallelogram structure, a second parallelogram structure, an attitude adjusting mechanism and a clamping mechanism; the first parallelogram structure and the second parallelogram structure are both formed by a plurality of rod pieces which are sequentially hinged end to end; a first hinging point of the first parallelogram structure is coaxial with a first hinging point of the second parallelogram structure; a second hinging point of the first parallelogram structure is connected with a second hinging point of the second parallelogram structure through a connecting rod; the tail end of the second parallelogram structure is a wrist part, wherein the wrist part can be keep horizontal under connection of the first parallelogram structure and the second parallelogram structure; the wrist part is hinged with the attitude adjusting mechanism; and the attitude adjusting mechanism is hinged with the clamping mechanism. The force feedback main manipulator provided by the invention can meet the requirements of minimally invasive surgery, conforms toergonomics, has a force feedback function and is low in cost.

The invention discloses a mini-sized pod which comprises a directional assembly, a pitching assembly, a visible light camera, a horizontal rotating shaft and a vertical rotating shaft. The directional assembly is connected with the vertical rotating shaft. The pitching assembly is connected with the horizontal rotating shaft. The directional assembly adjusts rotation of the visible light camera in the vertical direction. The pitching assembly adjusts the visible light camera in the horizontal direction. The mini-sized pod has the advantages of being compact in structure, low in weight, small in size, large in zooming multiple, high in image stable precision and high in dynamic performance.

The invention mainly relates to melon pulp-excavating seed-extracting juice-making machine equipment, belongs to agricultural machinery, and particularly relates to a melon pulp-excavating machine. The machine mainly comprises a melon feeding mechanism, a melon insert frame indexing mechanism and a pulp excavating cutter lifting mechanism, and is mainly characterized in that an oscillating bar (4) of the melon feeding mechanism and a shaft (6) are hinged at a position of three fourths of the oscillating bar, the long end of the oscillating bar is sleeved on a sliding sleeve (4), the short end of the oscillating bar is tangential to a disc cam (5), a guide rail (40) and a cutter (38) are fixed on a rack (1), a support (39) is hinged with the sliding sleeve (41), the 2 round pin-4 fluted roller shaft (9) and a 2 round pin-4 fluted roller shaft (11) of the melon insert frame indexing mechanism are connected with two melon insert frames (12) through flat keys, the included angle of the two melon insert frames on a fluted roller shaft is 180 degrees, a plain-based disc cam (19) of the pulp-excavating cutter lifting mechanism is designed to be double-stopping distance, an excavating cutter (13) is connected with a motor II (17) through a flange coupling (16), an excavating cutter rest guiding sleeve (14) is fixed on the frame (1), the melon feeding mechanism adopts the disc cam mechanism of a oscillation type driven part, the melon insert frame indexing mechanism adopts a 2 round pin-4 fluted roller shaft roller mechanism, the pulp-excavated cutter lifting mechanism selects transmission of a plane-bedded driven part disc cam mechanism, the action of each mechanism ensures coordination and consistence, in a circle of roller shaft rotation, the melon is fed twice, a pulp-excavation position adopts upper pulp excavation, and the support of a semi-seed melon is stable when the pulp is excavated, and the size of the machine in the length direction is reduced simultaneously.

The invention discloses a multi-driven three-degree-of-freedom leaf spring type micro-nano operating platform and method. The platform comprises a mobile platform for placing a mobile object, wherein driving mechanisms are arranged at four corners or extended edges of four edges of the mobile platform; the driving mechanisms are arranged in the positions of four corners in a quadrangle shape; one of the driving mechanisms is matched with another one to drive the mobile platform to move in X-axis or Y-axis and rotate around Z-axis; each driving mechanism comprises a guide leaf spring connected to the mobile platform, the guide leaf spring is connected to a driving power source, and at least one auxiliary leaf spring is arranged on each side of the guide leaf spring. The platform disclosed by the invention has he beneficial effects that as four leaf spring units are circumferentially arranged, the rotating degree of freedom of the mobile platform around the Z-axis can be realized, so that the range of application of the micro-nano operating platform is expanded; meanwhile, by way of an overdrive design mode, transmission errors caused by errors of structural shapes due to machining errors can be effectively overcome.

The invention discloses an intelligent average-speed target flowmeter in the technical field of fluid measurement. In the intelligent average-speed target flowmeter consisting of a average-motion static-torque lever mechanical part, a singlechip and software, micropower is amplified according to a average-motion static-torque lever principle, a streamlined target does not generate vortex oscillation, the surface area S0 of the streamlined target together with the surface areas S1 and S2 of dynamic-torque target rods enlarges an inflow surface, an average flow rate can be obtained by adding the surface areas S0, S1 and S2, transmission errors in the prior target flowmeter are prevented due to the fact that no moving part is required, the high precision of an orifice plate, the average flow rate of a average-speed tube flowmeter and no moving part of a capacitance target flowmeter are combined together, thermal-insulation machine shell enables the instrument to operate in various environments, and the singlechip and software can realize the intelligence of the flowmeter instrument and the integration of temperature and pressure compensation and improve the measurement accuracy of the flowmeter instrument.

The invention belongs to the technical field of a speed reduction motor, and more specifically relates to an electric tail gate speed reduction motor used for an automobile. The electric tail gate speed reduction motor comprises a motor and a speed reducer; a speed reduction mechanism is arranged in the speed reducer; the speed reduction mechanism comprises a first-stage speed reduction mechanism in transmission connection with the output end of the motor, and a second-stage speed reduction mechanism in transmission connection with the first-stage speed reduction mechanism; the input shaft of the first-stage speed reduction mechanism and the output shaft of the motor share a coaxial line; the output shaft of the first-stage speed reduction mechanism is perpendicular to the axial line of the input shaft thereof; and the input shaft of the second-stage speed reduction mechanism and the output shaft of the first-stage speed reduction mechanism share a coaxial line. The electric tail gate speed reduction motor has the advantages of high transmission ratio, compact structure and stable operation; the size of the speed reducer is further reduced while the mounting and debugging of the overall speed reduction motor become convenient; and by virtue of the smaller size, more space can be saved for a trunk.

The invention discloses a hobbing tool rest for a small-modulus numerically-controlled gear hobbing machine. The hobbing tool rest comprises a tool rest body, a tool rest main shaft, a tool rest tool movement part and a tool rest tailstock, wherein the tool rest main shaft comprises a tool rest sliding plate, a main shaft box installed on the tool rest sliding plate, and a main shaft body and a tool bar which are pivoted in the main shaft box, the tool rest sliding plate is arranged on the tool rest body in a sliding fit mode, a torque motor is arranged in the main shaft box, a rotor of the torque motor is fixed to the main shaft body, and a stator of the torque motor is installed on the inner wall of the main shaft box; the tool bar is installed on the main shaft body; the tool rest tool movement part is fixed to the tool rest sliding plate, a lead screw is pivoted to the tool rest tool movement part, and a nut of the lead screw is fixed to the tool rest body; the tool rest tailstock is arranged on the tool rest sliding plate in a sliding fit mode, and the tool rest tailstock abuts against the tail end of the tool bar. Due to the fact that the rotor of the torque motor is directly fixed to the main shaft body, direct power transmission is achieved, transmission errors are avoided, and the rotating precision of the main shaft body is improved.

The invention discloses a theodolite type laser coarse pointing mechanism which comprises a pitch axis assembly and a pitch auxiliary supporting assembly which are installed on the two side walls of aU-shaped frame respectively. An azimuth axis assembly penetrates through the bottom face of the U-shaped frame to be installed, the two ends of the load are respectively connected with the pitching shaft assembly and the pitching auxiliary support assembly, and the two ends of a pitch axis locking arm are respectively connected with the load and a pitch axis locking and releasing device. A coil part and an armature part of a parking electromagnet are respectively connected with the pitch axis locking and releasing device and the pitch axis locking arm, the two ends of the azimuth axis lockingarm are respectively connected with the U-shaped frame and the azimuth axis locking and releasing device, and a light path assembly is arranged at the outer side of the pitching auxiliary supportingassembly. According to the invention, the problems of low data transmission rate, low tracking precision, poor long-distance communication quality, slow response speed, low tracking bandwidth, much signal energy dissipation, larger space size, high transportation and emission cost and the like of a traditional radio frequency antenna turntable communication device are solved.

The invention relates to an oil field underground logging unit, in particular to a series acoustic wave storage variable density logging unit. The logging unit is characterized in that the logging unit comprises at least a group of upper acoustic detection units (1), a group of lower acoustic detection units (2), a magnetic positioning unit (3) and a detection processing unit (4); the detection processing unit (4) is respectively electrically connected with emission control ports of the upper acoustic detection units (1) and the lower acoustic detection units (2) through I / O interfaces; acoustic detection circuits of the upper acoustic detection units (1) and the lower acoustic detection units (2) transmit the detected signals to an amplification processing circuit, the digital signals converted by the amplification processing circuit are transmitted to the I / O interface of the detection processing unit (4), and the detection processing unit (4) stores the processed signals on a memory card (5). The transmission error of acoustic signals caused by the poor frequency characteristic of direct-read type cable in prior arts is avoided, and thus the measuring curve resolution and the precision are improved.

A measuring method for a high speed rotating permanent magnetic synchronous rotor temperature distribution is used for measuring the surface temperature distribution of the permanent magnetic rotor of a high speed rotating permanent magnetic synchronous motor. The invention firstly drills a pore on the stator tooth and fixes the infrared temperature sensor in the pore to make the probe of the sensor oppose to the surface of the rotor; the invention also uses a variable-frequency governor to make the rotor in high speed rotation reduce below the critical measuring rotating speed in a short time and stabilize the operation; the data collecting system records the changes of the surface average temperature in the process of rotor deceleration measured by the sensor and the rotor surface temperature distribution of the stable operation below the critical measuring speed; the method adds two of the result to obtain the temperature distribution while rotating in high speed. The invention achieves the single sensor non-contact multi-point serial measurement for the rotor temperature distribution, avoiding the problems of installment of the sensor on the high speed rotor and the data transmission in the strong electromagnetic environment, solving the difficulties of hard measurement of the temperature distribution caused by the sensor responding time.

The invention relates to a planetary reduction motor capable of realizing full closed-loop control and an articulated robot using the reduction motor. According to the invention, the assembly accuracyis high, and high-precision full closed-loop control is realized. The main structure of the motor includes a planetary reducer part, a motor part and a full closed-loop control device. The full closed-loop control device includes a drive shaft and a grating encoder. The grating encoder is located outside the motor casing body and is arranged on the rear end surface of the motor casing body. A rotor and the sun gear of a first-stage planetary reduction mechanism in the planetary reducer are fixedly connected through interference fit. The front end of the motor casing body and the reducer casing body are directly fixed by screws. In each stage of the planetary reduction mechanism, at least two planetary holes in a planet carrier have a circumferential offset relative to the positions of planet wheels distributed in the circumferential direction, which is used to reduce backlash.

The invention discloses a die-loading height signaling device for a closed press, which belongs to the field of presses and includes a motor and a worm. A driven shaft is provided at one end of the worm, and a coupling is provided between the worm and the driven shaft. There is a support seat on the machine to support the driven shaft, which can play a shock absorption effect. There is a chain transmission mechanism between the driven shaft and the motor. The motor drives the driven sprocket on the driven shaft to rotate through the driving sprocket and the chain. The side of the inventive worm connected with the coupling is provided with a direction-changing main sprocket, and the direction-changing main sprocket is connected with a direction-changing slave sprocket through a direction-changing chain, and a signal-transmitting device is connected with a direction-changing slave sprocket. An encoder is connected, and the present invention utilizes the above-mentioned direction-changing sprocket transmission mechanism to eliminate the axial force of the encoder and improve the service life of the encoder. Moreover, the above-mentioned structure not only makes reasonable use of space, but because the axial variation there is affected by the coupling The change of the impact of the shaft device and the support seat is small, and the deformation of the worm is small, which avoids the transmission error of the direction-changing sprocket transmission mechanism.

The present invention discloses a source-image distance detecting method and device and equipment. The method is applied for the source-image distance detecting device in a radiographic imaging system. The system also includes a radioactive source and a detector. The method includes acquiring distance change values of the radioactive source relative to a spherical projection object or the detectorat different distances; respectively acquiring projection images of the spherical projection object on the imaging surface of the detector at different distances; and determining the source-image distance of the system according to the projection images at different distances and the distance change values. As the spherical projection object has an isotropous characteristic, a problem that spatial gesture of a projection object may be not parallel to the imaging surface of the detector is avoided; the source-image distance is determined by the distance change values so that a zero error and amechanism transmission error of a distance sensor can be avoided, thus improving accuracy of source-image distance detecting.

The invention discloses a vibration reduction belt wheel. The vibration reduction belt wheel comprises an inner belt wheel with a shaft hole, an outer belt wheel provided with a belt groove in the outer circumferential face annularly and a rubber layer arranged between the inner belt wheel and the outer belt wheel, a first arc-shaped groove is formed in the outer circumferential face of the inner belt wheel annularly, a second arc-shaped groove is formed in the inner circumferential face of the outer belt wheel, the first arc-shaped groove and the second arc-shaped groove are oppositely arranged to form a rolling way, and multiple balls are assembled in the rolling way. Compared with the prior art, the rolling way with the arc-shaped cross section is designed between the outer belt wheel and the inner belt wheel, the multiple balls are assembled in the rolling way, the runner layer equivalently serves as a holding support of the balls, and therefore the outer belt wheel and the inner belt wheel have rigid axial and radial limiting, radial loads and axial loads are borne at the same time, radial and axial displacement of the inner belt wheel and the outer belt wheel is effectively limited, accelerated aging caused by transmission errors and extra stress of rubber is avoided, and the running stability and reliability are improved.

The invention provides a worm and gear speed reducer, and belongs to the technical field of speed reducers. The worm and gear speed reducer comprises a worm gear assembly and a worm assembly; the wormgear assembly comprises a worm gear; the worm assembly comprises a worm and a motor, wherein the worm can mesh with the worm gear, and the motor drives the worm to rotate; the motor comprises a poweroutput shaft; the worm comprises a wheel shaft and spiral teeth, wherein the spiral teeth are arranged in the circumferential direction of the wheel shaft; the wheel shaft is in transmission connection with the power output shaft of the motor; and the spiral teeth extend to the power output shaft and cover the power output shaft. According to the worm and gear speed reducer, the defect of large transmission error can be overcome.

The invention relates to a gear driving mechanism for the upper cutter frame and the lower cutter frame of the flying shear, in particular to a gear driving mechanism with variable working conditions. The gear driving mechanism comprises a main drive gear, a lower cutter frame drive gear and an upper cutter frame drive gear which are mutually meshed and arranged on a main drive shaft and eccentric shafts of the upper and the lower cutter frames, wherein, the upper cutter frame drive gear is composed of a gear core, a master gear, a pinion, an eccentric regulating shaft and bolts, wherein the gear core is connected with the eccentric shaft of the upper cutter frame, and the master gear and the pinion are arranged on the outer circle of the gear core in series; the eccentric regulating shaft is arranged between the pinion and the gear core; a plurality of connecting holes are respectively arranged on the identical circumference of the gear core, the master gear and the pinion, and the bore diameters of the connecting holes on the pinion are slightly larger than that of the connecting holes on the master gear and the gear core; the gear core, the master gear and the pinion are connected through the bolts penetrating through each connecting hole. The gear driving mechanism has the advantages that the clearances between the meshed gears are effectively eliminated, the driving error is overcome, and the impaction between the gears generated due to the clearances is eliminated as well.

The invention discloses a gear hobbing tool rest of a small-module numerical control gear hobbing machine, which comprises a tool rest body part, a tool rest main shaft part, a tool rest shifting part and a tool rest tail seat part. The main shaft part of the tool rest includes a slide plate of the tool rest, a spindle box installed on the slide plate of the tool rest, a main shaft pivotally connected in the spindle box, and a knife bar; Torque motor, the rotor of the torque motor is fixed on the main shaft, the stator of the torque motor is installed on the inner wall of the main shaft box; the tool bar is installed on the main shaft. The part of the knife rest that moves is fixed on the slide plate of the knife rest, and the part of the knife rest that shifts the knife is pivotally connected with a screw, and the nut on the screw is fixed on the body of the knife rest. The knife rest tailstock part is slidably fitted on the knife rest slide plate, and the knife rest tailstock part is against the tail end of the tool bar. The rotor of the torque motor of the present invention is directly fixed on the main shaft, which realizes zero transmission of power transmission, avoids transmission errors, and is beneficial to improving the rotation accuracy of the main shaft.

The invention relates to a rope-driven cable arrangement device, which comprises: a motor with an output shaft; a winding shaft connected to the output shaft of the motor; There is a threaded screw nut; a guide pulley of a wire arrangement mechanism, and the guide pulley of the wire arrangement mechanism includes two guide pulleys arranged side by side, a linear bearing, and a pulley mounting seat; the two guide pulleys are of variable pitch structure ; The pulley mounting seat is fixedly connected to the screw nut, and is driven by the screw to feed along the axial direction of the screw, and the guide pulley of the cable arrangement mechanism moves back and forth under the drive of the screw; and a guide rod The linear bearing penetrates into the linear bearing and is connected with the linear bearing, and driven by the lead screw, the linear bearing and the guide pulley of the cable arrangement mechanism slide axially along the guide rod. The invention can ensure that the winding position of the steel wire rope on the winding shaft is accurate, and can accurately control the accuracy of the load position.

The invention relates to a planetary geared motor capable of realizing full-closed-loop control and a joint robot using the geared motor. The invention not only has high assembly precision but also realizes high-precision full-closed-loop control. Its main structure includes the planetary reducer part and the motor part; it also includes a full-closed-loop control device; the full-closed-loop control device includes a transmission shaft and a grating encoder; the grating encoder is located outside the motor housing and installed on the tail end of the motor housing Above; the rotor and the sun gear of the first-stage planetary reduction mechanism in the planetary reducer are fixedly connected by interference fit; the front end of the motor casing and the reducer casing are directly fixed by screws; and each stage of the planetary reduction mechanism : At least two planetary holes in the planet carrier have a circumferential offset with respect to positions distributed in the circumferential direction of the planetary gears, which are used to reduce backlash.

The invention mainly relates to melon pulp-excavating seed-extracting juice-making machine equipment, belongs to agricultural machinery, and particularly relates to a melon pulp-excavating machine. The machine mainly comprises a melon feeding mechanism, a melon insert frame indexing mechanism and a pulp excavating cutter lifting mechanism, and is mainly characterized in that an oscillating bar (4) of the melon feeding mechanism and a shaft (6) are hinged at a position of three fourths of the oscillating bar, the long end of the oscillating bar is sleeved on a sliding sleeve (4), the short end of the oscillating bar is tangential to a disc cam (5), a guide rail (40) and a cutter (38) are fixed on a rack (1), a support (39) is hinged with the sliding sleeve (41), the 2 round pin-4 fluted roller shaft (9) and a 2 round pin-4 fluted roller shaft (11) of the melon insert frame indexing mechanism are connected with two melon insert frames (12) through flat keys, the included angle of the two melon insert frames on a fluted roller shaft is 180 degrees, a plain-based disc cam (19) of the pulp-excavating cutter lifting mechanism is designed to be double-stopping distance, an excavating cutter (13) is connected with a motor II (17) through a flange coupling (16), an excavating cutter rest guiding sleeve (14) is fixed on the frame (1), the melon feeding mechanism adopts the disc cam mechanism of a oscillation type driven part, the melon insert frame indexing mechanism adopts a 2 round pin-4 fluted roller shaft roller mechanism, the pulp-excavated cutter lifting mechanism selects transmission of a plane-bedded driven part disc cam mechanism, the action of each mechanism ensures coordination and consistence, in a circle of roller shaft rotation, the melon is fed twice, a pulp-excavation position adopts upper pulp excavation, and the support of a semi-seed melon is stable when the pulp is excavated, and the size of the machine in the length direction is reduced simultaneously.