17results about How to "Precise torque control" patented technology

The utility model discloses a nut assembling mechanism with torsion control, which comprises a mounting frame, a sliding table cylinder is vertically arranged on the mounting frame, a mounting plate is arranged on the sliding table cylinder, a servo motor is vertically arranged on the upper portion of the mounting plate, a working shaft of the servo motor is vertically downward, and the working shaft of the servo motor is vertically downward. A torsion sensor is arranged on the mounting plate, a working shaft of the servo motor is rotationally connected with the torsion sensor, a connecting shaft is arranged at the lower end of the working shaft of the servo motor, the lower end of the working shaft of the servo motor is fixedly connected with the upper end of the connecting shaft through a coupler, and an assembling disc is arranged at the lower end of the connecting shaft; nut grooves matched with nuts are formed in the bottom face of the assembly disc. The nut assembling mechanism with the torsion control function is used for assembling a nut and a stud, particularly assembling a special-shaped nut and the stud, and the torsion and the height position are controllable when the nut is assembled.

The utility model relates to the technical field of watch processing, and discloses a bottom cover screwing machine for assembling a watch threaded bottom cover, which can accurately control the screwing force and improve the screwing effect, and comprises a rack, a screwing assembly, a torsion sensor and a display device, the rack is movably placed on a workbench, the bottom surface of the rack is provided with a non-circular groove / hole, and the display device is arranged in the non-circular groove / hole. The rack comprises a mounting table, a vertical frame fixedly connected with the mounting table, and a cantilever fixed to the top end of the vertical frame and provided with a through hole. The screwing assembly comprises a connecting rod penetrating through the through hole, a handle fixed to the top of the connecting rod, a clamping head fixed to the bottom of the connecting rod, and two clamping jaws installed at the bottom of the clamping head and adjustable in position on the clamping head. The torsion sensor penetrates through the upper surface and the lower surface of the workbench and is fixedly connected with the workbench, the detection end of the torsion sensor extends out of the upper surface of the workbench and is inserted into the non-circular groove / hole, and the outer contour shape of the detection end of the torsion sensor is matched with the inner contour shape of the non-circular groove / hole; the display device is electrically connected with the torsion sensor.

The invention discloses a motor back electromotive force determination method and device, equipment, a storage medium and a program product. The method belongs to the technical field of power electronics, and comprises the following steps: under the condition that a motor is determined to be in a zero-torque operation state, obtaining motor operation electrical parameters and a motor rotation speed; determining a motor running state of the motor based on the motor rotating speed and a preset rotating speed threshold value; and determining the counter electromotive force of the motor according to the motor operation state and the motor operation electrical parameters. According to the embodiment of the invention, the counter electromotive force of the motor can be simply, conveniently and accurately calculated, so that accurate torque control of the motor is realized.

The utility model provides a lithium battery cap pressure welding device which comprises a workbench, moving blocks are connected to the left side and the right side of the bottom in the workbench in a sliding mode, a driving wheel is fixedly connected to the upper portion of the rear end of the workbench, and a fixed block is movably connected to the interior of the workbench. According to the pressure welding device for the lithium battery cap, by arranging a moving groove, a moving block, a first clamping plate, a driving wheel, a driven wheel, a sliding groove, a sliding block, a fixed block, a second clamping plate and other structures, the moving block achieves transverse movement of the first clamping plate through transmission of a first double-thread screw, clamping of a lithium battery is completed, and the driving wheel and the driven wheel transmit power stably through a transmission belt; a sliding groove, a sliding block and a fixing block are combined and matched with a second double-thread screw, a second clamping plate can clamp the middle of the lithium battery, the first clamping plate and the second clamping plate are in arc design and provided with an anti-skid pad, the appearance of the lithium battery is attached, friction force is enhanced, and the battery is prevented from being damaged and sliding.

The invention discloses an integrated motor structure with a bidirectional power recovery function, which belongs to the field of permanent magnet synchronous motors and comprises a casing suite, and a motor casing integrated electric control junction box assembly is mounted on the casing suite. A motor through type output shaft is arranged at the position of a central shaft of the machine shell suite, and a plurality of sets of stator assemblies and rotor assemblies are arranged in the machine shell suite. The stator assembly is fixedly connected with the inner wall of the machine shell suite, a radial gap is formed between the stator assembly and the circumference of the motor through type output shaft, the rotor assemblies are fixedly arranged on the motor through type output shaft, and the wet brakes are arranged between the different rotor assemblies. The motor is compact in structure, small in size, light in weight, capable of providing larger torque output, capable of reducing loss energy, capable of improving efficiency and capable of achieving accurate speed and torque control. The device is fast in dynamic response, does not generate electromagnetic noise and vibration in the operation process, is relatively simple in structure, and is relatively long in service life and relatively high in reliability.

The utility model discloses a rapid and accurate straightening device for a hot rolling laminar flow roller, and relates to the technical field of roller shaft machining and repairing. The rapid and accurate straightening device for the hot rolling laminar flow roller comprises a rectangular straightening base, a plurality of screw holes are machined in the two sides of the straightening base, two clamping and conveying modules, a measuring module and a straightening module are arranged on the upper portion of the straightening base in the length direction, and the mutual positions and the distances among the clamping and conveying modules, the measuring module and the straightening module can be adjusted according to the bending condition of the laminar flow roller. According to the rapid and accurate straightening device for the hot rolling laminar flow roller, the bending degree of the laminar flow roller and the size change process in the straightening process are accurately measured through the measuring module, accurate control over the straightening process is achieved through a program preset by the single-chip microcomputer and a mathematical model, the parameter of overexertion can be corrected in time through the multiple straightening processes, and the straightening accuracy is improved. And the positions and the distances of the straightening module and the measuring module can be adjusted according to the bending condition and the bending position, so that the local bending can be accurately corrected.

The invention belongs to the technical field of motor control, and particularly discloses a vector magnetic circuit-based motor electromagnetic torque equation and maximum torque current ratio calculation method and control method.The method comprises the following steps of: firstly, establishing a vector magnetic circuit model of a permanent magnet motor, and representing the influence of eddy current and hysteresis effect in a magnetic material on the electromagnetic torque of the motor by using equivalent magnetic induction; establishing a permanent magnet motor vector magnetic circuit electromagnetic torque equation containing equivalent magnetic induction through coordinate transformation; and then, a maximum torque current ratio control method of the permanent magnet motor is further provided. According to the method provided by the invention, the influence of eddy current and hysteresis effect in a magnetic material on the electromagnetic torque of the motor is fully considered, and the torque control of the permanent magnet motor is more accurate through the maximum torque current ratio control.

The utility model relates to a pre-value type torque wrench which comprises a handle body, a square tenon connector, a torque transmission structure, a torque adjusting spring and a tail end adjusting structure, a cavity is formed in the handle body, the square tenon connector is fixedly connected to one end of the handle body, and the torque transmission structure is arranged in the cavity of the handle body; the torsion adjusting spring is arranged in a cavity of the handle body and abuts against the torque transmission structure, the tail end adjusting structure is arranged at one end of the handle body to adjust the tension degree of the torsion adjusting spring, and the torque transmission structure comprises a torsion rod, a positioning pin, a force transmission rod and an abutting structure. On one hand, the torque wrench has a more accurate torque control effect, and on the other hand, the surface of the torque wrench is coated with the insulating layer, so that the torque wrench has a good insulating effect.

The invention relates to the field of motors, in particular to a wide-speed-regulation-range motor applied to a stirring system. The invention discloses a wide-speed-regulation-range motor applied to a stirring system. The wide-speed-regulation-range motor comprises a motor shell with a protection frame, the front end cover is fixedly connected to the front side of the motor shell, and the front end cover is communicated with the internal space of the motor shell; the rear end cover is fixedly connected to the rear part of the motor shell; and the motor control box is arranged on the outer side of the motor shell. The permanent magnet direct-driven motor is used as a power source in the stirring system, a permanent magnet material is used as a rotor excitation source, the speed regulation range is wide, the rotating speed can be adjusted according to the actual working condition, the closed-loop control system is adopted, the rotating speed can be accurately controlled, more accurate rotating speed and torque control is achieved, and the stirring efficiency is improved. The performance requirements of different torque densities, rotating speeds and the like are met, and work is efficiently completed.

The utility model discloses a kind of thread structures of optical lens, including back seat and lens barrel, back seat is equipped with rectangular internal thread;Lens barrel is equipped with trapezoidal external thread matched with rectangular internal thread;Two corner parts of the crest of rectangular internal thread are in contact with the side of trapezoidal external thread;By adopting the cooperation of rectangular internal thread and trapezoidal external thread, and design the crest corner part of rectangular internal thread is in contact with the side of trapezoidal external thread, the close cooperation of thread and uniform stress are realized.This structure not only enhances the stability of threaded connection, but also makes wear mainly concentrate in the crest corner part of rectangular internal thread, facilitate control and predict wear site, reduce the risk of optical lens imaging quality decline caused by thread loosening.In addition, the matching mode can form stable friction in the assembly process, which helps to realize more accurate torque control, further improves the precision and reliability of optical lens assembly.

The invention provides a motor power automatic tracking method and system, and the method comprises the steps: collecting the three-phase current of a motor through a current sensor, carrying out the Clarke conversion of the three-phase current, and obtaining the current of an alpha-beta coordinate system. And performing Park transformation on the current of the alpha-beta coordinate system to obtain the current of the dq coordinate system. And comparing the dq coordinate system current with the feedback current, and generating a PWM waveform according to a comparison result. And performing phase angle conversion on the phase angle to obtain a converted phase angle. And integrating the converted phase angle, the PWM waveform and the motor torque to obtain a compensation current curve, and adjusting the motor power according to the compensation current curve. And through coordinate transformation, original complex multivariable variables are converted into a specific coordinate system, so that accurate speed control and torque control can be implemented conveniently. The motor power is adjusted according to the compensation current curve, the motor current can be compensated constantly under the condition of constant voltage, the motor power can be accurately controlled, and energy is saved on the premise that the requirement of an application scene for the motor driving performance is met.

The invention relates to the field of assembly equipment, and discloses a pressure gauge fixing device which comprises a rack, a mounting base, a fixed driving cylinder, a fixed block, a wrench, a first driving cylinder and a tightening motor, the mounting base is connected to the rack, the mounting base is connected with a convex block, and the convex block is used for being attached to the inner wall of a water pump controller shell; the fixing block is used for abutting against the side, away from the mounting base, of the water pump controller shell, the fixing driving cylinder drives the fixing block to slide, the wrench is provided with a clamping groove, a hexagonal clamping block of the pressure gauge is embedded in the clamping groove, the first driving cylinder is used for driving the wrench to slide, and the tightening motor is used for driving the wrench to rotate. Relative fixation of the water pump controller shell and the rack is achieved through the protruding block and the fixing block, the possibility of deviation in the assembling process of the water pump controller shell and the pressure gauge is reduced, the first driving cylinder drives the hexagonal clamping block of the pressure gauge to be embedded into or separated from the clamping groove, the tightening motor drives the wrench to rotate, and accurate control over torque is achieved. The damage possibility of the pressure gauge is reduced, and the assembly quality and efficiency are improved.

The utility model relates to the field of wrenches, and discloses a portable directional torsion calibration wrench which comprises a handle, a round groove is formed in the bottom of the handle, a rotating disc is rotatably installed in the round groove, a connecting rod is arranged at the bottom of the rotating disc, a rotating shaft is rotatably installed at the top of the handle, and a gear is arranged on the outer wall of the rotating shaft in a sleeved mode. The top of the rotating shaft is fixedly provided with a torsion detection device, the top of the handle is slidably provided with a rack, and the wrench further comprises a rotation-free assembly, through the design of the rotation-free assembly, a workpiece can be fastened or loosened under the condition that the wrench body is not rotated, the working capacity of the wrench in a narrow space is greatly improved through the characteristic, and the working efficiency of the wrench is improved. The problem that a traditional wrench cannot work due to space limitation is solved, pulling force of an operator is converted into rotating power of the wrench, operation steps are simplified, working time is shortened, meanwhile, due to the fact that the wrench body does not need to be frequently rotated, physical output of the operator is correspondingly reduced, and working efficiency is further improved.

This utility model discloses a vector water supply device equipped with a pump control unit, relating to the field of water supply equipment technology. It includes a water pump module, a pressure stabilizing tank, a first pressure sensor, and a control cabinet module. The water pump module comprises multiple vector variable frequency pumps, each with its inlet connected to a water tank for water supply. The outlets of these pumps are connected in parallel to a common outlet manifold. Each pump integrates a variable frequency drive board, a PLC control board, and a status sensor. The pressure stabilizing tank is connected in parallel between the inlet and outlet of the water pump module, and an electrically controlled valve is installed on the delivery pipeline. The first pressure sensor is installed on the outlet manifold. This utility model employs distributed control, improving product reliability and reducing operating costs. It allows for monitoring of the equipment's operating status, preventing prolonged operation in a faulty state and reducing maintenance costs.

The utility model belongs to the technical field of beer processing, and particularly discloses a sliding plate subpackaging machine for a beer box body, which comprises a supporting foot stool, a rack is arranged at the top of the supporting foot stool, a photoelectric switch is arranged on one side of the rack, a connecting brace is arranged at the bottom of the rack, and a subpackaging component is arranged between the connecting brace and the rack; the subpackaging assembly comprises two servo motors, one servo motor is located above the other servo motor, the other servo motor is distributed in a cross shape, the output ends of the two servo motors are fixedly connected with ball screws, the outer walls of the two ball screws are in threaded connection with sliding blocks, and the sliding blocks are in threaded connection with the sliding blocks. Two sliding blocks are arranged in the machine frame, two sliding rails are arranged in the machine frame, the two sliding blocks are connected with the corresponding sliding rails in a sliding mode respectively, through the arrangement of the subpackaging assembly, very accurate position, speed and torque control can be achieved, and subpackaging accuracy and consistency are guaranteed. Therefore, the product quality can be improved, and errors and the defective rate can be reduced.

The present disclosure provides a clutch control method, a control device, a storage medium and a gearbox controller. The method comprises: when the current vehicle state enters the slip state, determining the target slip speed of the clutch corresponding to the current gear; then judging whether the current vehicle state meets the state of collecting the torque deviation of the clutch, if so, collecting the torque deviation once, storing the torque deviation, and at the end of the adjustment period, accumulating all the torque deviations collected previously, taking the average according to the cumulative number to obtain the torque average deviation, if the torque average deviation exceeds the preset deviation threshold, recording the torque average deviation; if the current vehicle state meets the deviation application state, adjusting the current clutch friction coefficient according to the recorded average deviation, which can realize the automatic adjustment of the clutch friction coefficient, and further realize the accurate control of the clutch torque.

This invention discloses a connector thread life testing device, comprising a base, a drive shaft, a three-jaw chuck holder, and fixed three jaws. A second vertical plate is vertically mounted on the base. The drive shaft, driven by a stepper motor, is rotatably mounted on the second vertical plate. Two friction plates I, a clutch driven plate, and two friction plates II are sequentially mounted on the drive shaft from near to away from the stepper motor. A pressure adjusting component is mounted on the drive shaft to adjust the pressure between the two friction plates II and the clutch driven plate. One end of the three-jaw chuck holder is connected to one end of a rotating three-jaw chuck, and the other end is connected to the clutch driven plate. The other end of the rotating three-jaw chuck clamps the male connector head. The fixed three jaws are horizontally movable above the base, and one end of the fixed three jaws clamps the female connector head. The female connector head abuts against the male connector head via a spring-loaded component. This invention improves testing efficiency, accuracy, and stability.