Using dynamic torque sensor how to realize the precise control of tight force pre-tightening force

Torque will lead to the bolt fracture, fitting damage, deformation or fracture; Torque deficiency can lead to displacement, tilt, loose nut, standard even rupture. For external filament to and reduce the external filament on fatigue life. According to the torque sensor manufacturer engineers, 90% of external filament failures are caused by the torque of the original fault. Torque control including the torque control, torque control method/wine control, production control method, ultrasonic method, etc. High control precision, the method to yield limit method deviation is small, anchor bolt tightening to yield limit, complex, but automatic control system for tightening tools are expensive, for raw materials, structure and hardening is very tall to the requirement of bolt. Ultrasonic precision measurements can be successfully applied to a few inches of the bolt. But when local bolt norms is lesser, due to environmental risk, operators of the deviation will be more than instruments of pixels. In recent years, torque measurement interferometry mainly USES the memory storage and electronics black spots, bias and strain measurement mainly adopts no capacity of power grid electron optical method, but because of the limitation of price and properties cannot be applied in the production stage. High precision automatic assembly system software external thread parts, assembly with the system software must be as simple and intuitive, high-precision belt work must be conducted in the most simple way, an improved method of torque control/time adjustment, according to the system software of bias torque changes with time, the ratio of bending state changes, to achieve the ratio of torque and torque. To ensure the integrity of the moment, keep small, medium and small external wire precision tape, the simulation results verify the feasibility of control measures are analyzed. Finally, torque sensor manufacturer's chief engineer said: butterfly spring, with large bending function and damping capability is strong, the advantages of small deformation, large load, suitable for internal radial space is little. Therefore, in the high precision male vice, spring washer is generally selected as the spring seat. Torque control method can in smaller control torque adjustable scope, improve torque integrity of different torque is released, compared with the traditional torque control method, torque control method can achieve better torque control.

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