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

The invention discloses a rotating table used for a numerically-control machine tool. The rotating table comprises a box body, a front end cover, a rear end cover, a main shaft, a working table facet, a three-gear-ring meshing mechanism, an oil cylinder and a driving mechanism driving the main shaft to rotate. The three-gear-ring meshing mechanism comprises an external gear ring, an internal gear ring and a locking gear ring, wherein the external gear ring is fixedly connected with the front end cover, the internal gear ring is sleeved on the main shaft and is fixedly connected with the main shaft, and the locking gear ring is sleeved on the main shaft through the internal gear ring. The front end cover and the rear end cover are both fixedly connected with the box body. The main shaft is rotatably supported on the front end cover and the rear end cover. The working table facet is fixedly sleeved at one end of the main shaft. The oil cylinder is connected with the locking gear ring so that the locking gear ring axially moves on the main shaft to be meshed with or detached from the external gear ring and the internal gear ring. The driving mechanism comprises a worm wheel assembly, a worm, a coupler and a motor, wherein an output shaft of the motor is fixedly connected with one end of the worm through the coupler, and the worm wheel assembly is sleeved on the main shaft. A transmission portion of the rotating table is simple in structure, several middle transmission links are eliminated, the motor directly drives the worm to rotate, transmission precision is improved, and transmission efficiency is 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 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 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 discloses a spatial helical motion device including a base table and a control case and also including a linear displacement module. One side of the linear displace module is provided with a first power control line. Linear reciprocating motion of the device is realized through a program set for the control case. A rotary mechanism disposed above the linear displacement module moveslinearly in a reciprocating manner along with the linear displacement module. The rotary mechanism is provided with a second power control line. The rotation motion of the device is realized through the program set for the control case. The motion direction of the linear displacement module is parallel to the axial direction of the rotary mechanism. When the rotary mechanism moves linearly in a reciprocating manner along with the linear displacement module, the rotary mechanism enables the rotation motion of the device at the same time. The simultaneous motion of the linear displacement moduleand the rotary mechanism enables the spatial helical motion. According to the invention, helical motion of fixed parameters and variable parameters can be realized. The flexibility is high, the drivestructure is simple and collected data accuracy is high. Therefore, requirements for the helical motion device of different motion parameters are met.

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 force feedback main operating hand for minimally invasive surgery, comprising a first parallelogram structure, a second parallelogram structure, a posture adjustment mechanism and a clamping mechanism, the first parallelogram structure and the second parallelogram structure The structures are all hinged by a plurality of rods in the first order, the first hinge point of the first parallelogram structure and the first coincident hinge point in the second parallelogram structure, and the second hinge point in the first parallelogram structure passes through The connecting rod connects the second hinge point in the second parallelogram structure, the end of the second parallelogram structure is the wrist, the wrist can be kept horizontal under the connection of the first parallelogram structure and the second parallelogram structure, and the wrist is hinged Attitude adjustment mechanism, the attitude adjustment mechanism is hinged clamping mechanism. The invention can meet the requirement of minimally invasive surgery, conforms to ergonomics, has force feedback function and is low in cost.

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 mediumplate 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.