39results about How to "For fine tuning" patented technology

The invention discloses a gyro rotor mass center position accurate adjustment device and method based on an ultrasonic antifriction effect, and belongs to the field of small displacement adjustment of precision machinery. An ultrasonic transducer is added between an adjusting screw and a gyro clamp; in the adjusting process, the ultrasonic transducer transmits ultrasonic vibration to the adjusting screw; and at the moment, the adjusting screw has already been screwed into a rotor adjusting screw hole, so that the ultrasonic vibration can be transmitted to a gyro rotor through transmission of the adjusting screw to realize ultrasonic vibration between rotor contact surfaces. Transverse vibration between the contact surfaces can reach the ultrasonic antifriction effect, and besides, through axial rotation of the adjusting screw, accurate adjustment of gyro rotor mass center position can be realized under the condition of smaller friction force. The device and method can effectively reduce the friction force between the rotor and bearing contact surfaces, thereby reducing creeping phenomenon and improving adjusting precision and efficiency; and the device and method can be widely applied to the small displacement accurate adjustment process.

The invention discloses an automatic accurate adjustment system for an instrument movement clearance. The automatic accurate adjustment system comprises a work table, a handpiece module, an engine base module, a shifting module, a laser displacement sensor module and a controller. The handpiece module comprises a cutter head and a cutter head drive mechanism; the shifting module comprises a shifting plate and a shifting plate drive mechanism; the laser displacement sensor module comprises a probe, a laser displacement sensor and a probe drive mechanism; the signal output end of the laser displacement sensor is connected with the controller; and the control ends of drive elements in the cutter head drive mechanism, the shifting plate drive mechanism and the probe drive mechanism are connected with the controller. A clearance between a lower bearing and a shaft tip in a measurement mechanism of an electrical measuring instrument to be adjusted is detected by using the shifting plate, the probe and the laser displacement sensor, an adjustment quantity is output by using the controller according to a detection signal, and axial displacement is generated by driving the lower bearing through the cutter head, so that the accurate adjustment of the clearance between the lower bearing and the shaft tip is realized. The automatic accurate adjustment system is short in machining period, low in cost and high in efficiency; and moreover, the batch uniformity and the stability of the accuracy can be improved.

The present invention discloses a gyrorotor mass center position precision regulation device for solving abrasive dust pollution and an installation method thereof, belonging to the field of precisionmachinery mini-displacement regulation. A spiral device is added between a regulation screw and a gyroscope clamp, and in a regulation process, rotation motion of a rotation sleeve is converted to linear motion of a moving stud to drive the linear motion of the regulation screw so as to achieve a purpose of regulating the gyrorotor mass center position. The regulation screw is manually screwed into a rotor screwed hole so that the regulation screw and the rotor screwed hole are not relatively moved in the regulation process, the wearing problem cannot be generated, the wearing can be only generated at the external portion of the gyroscope tool, and the problem is creatively solved that the gyroscope is polluted by abrasive dust. The gyrorotor mass center position precision regulation device for solving abrasive dust pollution and the installation method thereof can thoroughly solve the abrasive dust pollution problem, can improve the qualified rate of the gyroscope, can reduce the unqualified products and can be widely applied to the mini-displacement precision regulation process.

The invention discloses a three-freedom-degree precise regulating device based on ball location. The device is installed between a main frame and an immersing unit of an immersed photo-etching machine; a mounting substrate and a connecting plate of the device are connected in parallel by three groups of same moving branched chains; each group of moving branched chain orderly consists of a linear moving pair, a ball fixing block, a ball and two guiding cylinders from the mounting substrate to the connecting plate; and two pre-tightening springs are respectively arranged at two sides of each group of moving branched chain. The three-freedom-degree precise regulating device disclosed by the invention is used for realizing installation and fixation of the immersing unit of the immersed photo-etching machine and precise regulation of a spatial posture of the immersing unit and realizing submicron-grade precise location of the immersing unit; the pre-tightening force of the pre-tightening springs ensures reliable contact between the ball and each guiding cylinder, so that the problems of existence of clearances and the creeping of the traditional moving pair in a micro-displacement range are solved; the structure connected in parallel enhances the rigidity of the system; and by the use of a modularized design, the three-freedom-degree precise regulating device can be used for three-freedom-degree precise regulation in places besides the immersed photo-etching machine.