44results about How to "High transmission rigidity" patented technology

The invention discloses a wire-cut electric discharge machine wire transport mechanism capable of realizing accurate closed-loop control on the tension of an electrode wire. The wire-cut electric discharge machine wire transport mechanism is characterized in that an upper tensioning wheel, a lower tensioning wheel and a connection plate form a tensioning element; the tensioning element is slidably connected with the vertical column of an opposite-line cutting machine along a vertical direction; the tensioning element is in transmission connection with a drive device through a force transducer, one end of the force transducer is fixedly connected with the tensioning element, and the other end of the force transducer is in transmission connection to the drive device; the directions of the acting forces of the upper tensioning wheel, the lower tensioning wheel, the force transducer and the drive device are located on the same axis; an annular closed electrode wire starts from a wire storage barrel, sequentially passes through an upper left reversing wheel, the upper tensioning wheel, an upper right reversing wheel, an upper guide wheel, a lower guide wheel, a lower right reversing wheel, the lower tensioning wheel and a lower left reversing wheel, and returns to the wire storage barrel; the signal acquired by the force transducer is used for controlling the drive device after being processed by a control circuit. The wire-cut electric discharge machine wire transport mechanism disclosed by the invention realizes accurate control on the tension of the electrode wire of a reciprocating wire-transport type wire-cut electric discharge machine.

The invention provides a ram type main transmission mechanism for a milling machine. The ram type main transmission mechanism comprises a spindle driving servo motor, a transmission gear box and a machine tool spindle, wherein the machine tool spindle is arranged in the front of a ram; the transmission gear box is arranged at a position, which corresponds to the machine tool spindle, of the ram; the lower part of the transmission gear box is positioned in the ram; the spindle driving servo motor is arranged on the ram; an input shaft of the transmission gear box is connected with the spindle driving servo motor through a coupling; an output shaft of the transmission gear box is connected with the machine tool spindle through an output gear and a machine tool spindle gear; and the input shaft and the output shaft of the transmission gear box can be connected with each other through multilevel gear transmission pairs which are arranged on different transmission shafts and can realize high-gear and low-gear rotational speed output. The transmission gear box and the ram are separated from each other, transmission of the transmission gear box is realized by gears, transmission rigidity is high, the size of the ram is small, the ram is simple in structure, the transmission gear box is convenient to mount and maintain, and the ram type main transmission mechanism is modularly designed and manufactured easily.

The invention relates to a precise combination bearing with adjustable pre-tightening force. The precise combination bearing with adjustable pre-tightening force comprises a small inner ring, a largeinner ring, an outer ring, an axial retainer, axial rollers and a radial roller, wherein the small inner ring is arranged on the small inner ring; the axial rollers are tapered rollers, and the linearspeeds of the two ends of each axial roller are consistent; tapered grooves matched with the axial rollers in size and shape are formed in the axial retainer; the axial rollers are mounted in the tapered grooves; the surfaces, correspondingly contacted with the axial rollers, of the small inner ring and the large inner ring are inclined surfaces matched with the tapered surfaces of the axial rollers; the outer end of each axial roller is provided with a pre-tightening device capable of adjusting pre-tightening force, and the pre-tightening devices are arranged outside the axial retainer; theradial roller is a spherical roller; each pre-tightening device comprises a piston, a spring and a small threaded plug; and the springs are connected with the axial rollers through small ball bodies.The precise combination bearing with the adjustable pre-tightening force has the advantages of high transmission rigidity, stable transmission, convenient mounting, high precision of machine operationand the like, and is not influenced by the speed difference of long-time operation.

An LAMOST astronomical telescope focal panel movement realizing mechanism is characterized in that a rotary movement mechanism, a tilted movement mechanism and a focusing movement mechanism are set as a co-movement mechanism, wherein, a large gear and a circular guide rail are fixedly connected on a base; six matched slide blocks are distributed on the circular guide rail; the slide blocks are connected with pinions through connecting plates; each pinion is meshed with the large gear; a drive motor is arranged on a shaft; the slide blocks are respectively connected with supporting rods through left single rod joint bearings; each supporting rod is connected on a focal panel through a right single rod joint bearing; every two supporting rods are arranged as one group in a V-shaped form, and one end of each of the two supporting rods leans against the connecting points of the focal panel through the right single rod joint bearings; three groups of connecting points are distributed in the same circle on the focal panel by 120 degrees; and the other end of each of the two supporting rods has a certain distance through the locations of the two slide blocks connected with the left single rod joint bearing on the circular guide rail. The invention not only simplifies the mechanical structure and the control system, but also improves the stability of the system.

The present invention discloses a surgical auxiliary robot instrument system. The surgical auxiliary robot instrument system comprises a power part, a sterile separator and an instrument, and the power part comprises at least one power group; each power group comprises a motor; each motor is connected with a speed reducer; an output shaft of each speed reducer is sleeved with a telescopic output flange; each output flange can be in inserted connection with a transition flange of the sterile separator; each transition flange can be in inserted connection with an input flange of the instrument;and the number and the positions of the output flanges, the transition flanges and the input flanges are corresponding. The surgical auxiliary robot instrument system provides mechanical conditions for realizing force feedback, realizes direct-sensing operation, greatly improves safety performance of surgical operations, also improves overall safety performance of the device, and is good in stability, high in motion precision, high in mechanism reliability, simple and convenient in operation, simple in manufacture and convenient in maintenance.

The invention discloses a 45-degree swing tool bit. The 45-degree swing tool bit comprises a B-axle motor, and a B-axle harmonic speed reducer matched and connected with an output shaft of the B-axle motor; a tool bit mounting base is arranged on the outer wall of the B-axle harmonic speed reducer; a height measuring sensor is arranged on the right side of the tool bit mounting base; a connecting rod support plate is arranged on an output shaft of the B-axle harmonic speed reducer, and is synchronously hinged with a third connecting rod and a fourth connecting rod; an A-axle motor and an A-axle harmonic speed reducer are arranged at the tops of the third connecting rod and the fourth connecting rod; the third connecting rod and the fourth connecting rod are synchronously hinged with a first connecting rod and a second connecting rod; gun head mounting bases are arranged on one sides of the first connecting rod and the second connecting rod; cutting nozzles are arranged at the bottoms of the gun head mounting bases; and gun heads are arranged at the tops of the gun head mounting bases. The 45-degree swing tool bit is simple in overall structure, low in working noise, high in machining precision and excellent in transmission rigidity, can get rid of vertical cutting of a traditional water cutter, can cut in a manner of front-back or left-right inclination, and greatly improves the machining efficiency.

The invention relates to a precise reduction transmission mechanism which has the advantages of favorable properties and high precision. The precise reduction transmission mechanism is characterized by comprising a sun wheel, a planetary wheel, a tensioning sleeve, cycloidal shafts, a cycloidal gear, a shell, a front cycloidal shaft flange and a back cycloidal shaft flange, wherein the front cycloidal shaft flange and back cycloidal shaft flange are fixedly connected and respectively rotatablely installed in the shell; the three cycloidal shafts are rotatablely installed between the front cycloidal shaft flange and back cycloidal shaft flange, and uniformly distributed on one circumference; the cycloidal shaft which protrudes out of the front cycloidal shaft flange is fixedly provided with the planetary wheel; the front cycloidal shaft flange is rotatablely provided with the sun wheel; the sun wheel and planetary wheel form a mesh fit; the cycloidal shaft arranged inside the shell is provided with the cycloidal gear; and a cycloidal bearing is arranged between the cycloidal gear and cycloidal shaft and forms a mesh fit with an inner gear ring positioned on the shell. The reduction mechanism has the advantages of favorable properties and high precision, and is beneficial to popularization and application in industry.

The invention discloses a gear turning machine. The gear turning machine is characterized in that a six-axis four-linkage machining mode is adopted, an X axis formed by a machine tool bed and other parts is responsible for radial cutter depth feeding, a Z axis formed by a machine tool stand column and other parts is responsible for axial cutting feeding, a C axis is responsible for workpiece rotation, a B axis is responsible for cutter rotation, hydraulic pressure is provided for workpiece clamping and cooling through a hydraulic station connected through an oil pipe, an A axis formed by an Aaxis dragging plate, a stand column dragging plate and other parts is responsible for adjustment of the angle of a cutter, and a Y axis formed by the A axis dragging plate and other parts is responsible for adjustment of the center of the cutter. According to the gear turning machine, gear machining is achieved through simultaneous action of gear shaping and gear hobbing, and the problems of low efficiency and low precision of traditional gear machining are solved; high-efficiency and high-precision machining is achieved; the efficiency of machining a common gear is 4 times or more that of a traditional machining process, and the precision grade can reach grade 6; and cutter angle adjustment adopts direct connection, and the positioning precision is high; and the C axis adopts a direct drive motor, then the power transmission links are few, the transmission rigidity is high, the efficiency is high, and the positioning precision is better.

The invention discloses a micro large-speed-ratio speed reducer. The micro large-speed-ratio speed reducer comprises a housing, an output base and an input shaft, wherein eccentric wheels are fixedlyarranged on the input shaft; the two eccentric wheels are separately connected to cycloidal gears through crank bearings; a plurality of pin gear pins are arranged at the periphery of the inner wall of the housing; the pin needle gears are in intermittent engagement with two cycloidal gears; the outer diameter of the housing of the speed reducer is not greater than 45 mm; and the thickness of thespeed reducer is not smaller than 26.4 mm. The speed reducer is smaller in size, and operation of a mounting mechanical hand is more flexible, so that use, in the field with insufficient output torqueof a harmonic speed reducer, can be completely replaced.

The invention discloses a fixed-axis cycloid transmission device comprising a shell, a power input shaft and a power output shaft. The power input shaft and the power output shaft are coaxially arranged and are respectively in rotation match with the shell; a driving disk is arranged in eccentric transmission match with the excircle of the power input shaft; a power output disk is arranged in transmission match with the power output shaft; transmission pins are uniformly arranged in rotation match along the circumference direction of the driving disk to form a pin gear which is engaged with an involute inner gear fixedly arranged on the shell; and the transmission pins are in eccentric rotation match with the power output disk. In the fixed-axis cycloid transmission device, the bearing capability of a cycloid reducing mechanism is enhanced, and a cantilever pin output mechanism of a traditional pin gear reducer is not used any nore, and power is directly output by the power output disk driven by the revolution motion of the transmission pins so as to enhance the transmission rigidity, improve the transmission efficiency and the transmission stability and further improve the bearing capacity. The invention has simple structure, small size, light weight, low cost, simplified mounting and dismounting processes and improved working efficiency.