Method for closing in self-locking nut

Abstract

The invention discloses a method for closing in a self-locking nut. A measurement device comprises a force value sensor, a controller, a force exerting rod and a closing-in block. An original closing-in tool is basically unchanged, and the measurement device is used. The force value sensor is additionally arranged on the back face of the force exerting rod. Force generated by the fact that the closing-in block is pressed by the force exerting rod to press the self-locking nut is converted into an electric signal, then stress information is fed back to the controller through the sensor, when a force value is equal to a set value, the controller sends out a signal, work is stopped, and resetting is carried out. Deformation resistance generated by the self-locking nut is coincident through the cooperation of the sensor and the controller, the mode that the closing-in size of the self-locking nut is controlled is changed into the mode that the deformation resistance of the self-locking nut is controlled, a control method is changed, the coincidence of locking force is good, the measurement device and the method are simple, and the coincidence of the locking force after the self-locking nut is closed in is improved. The deviation, caused by the machining tolerance, of the locking force of the self-locking nut is eliminated.

Description

technical field [0001] The invention relates to a closing method of a self-locking nut, which is mainly aimed at the closing process of the self-locking nut. Background technique [0002] In the mechanical processing industry, standard self-locking nuts widely used in aerospace, shipbuilding and other industries have many processing specifications, large quantities, and high requirements. The closing size directly affects the locking performance of the product. The existing closing process makes the product Deformation occurs, and different locking force values ​​are provided by the amount of deformation. The size tolerance of the closure of the original product is mostly controlled at 0.03mm ~ 0.05mm, the closure length h is 2mm ~ 3.5mm, and the measurement position is half of the closure length, see the self-locking nut closure diagram. This method directly controls the size of the final locking force provided by the product by controlling the amount of deformation of the...

AI Technical Summary

Problems solved by technology

Once the equipment is adjusted in place, the size of the obtained closure is basically the same, but the wall thickness of the self-locking nut is inconsistent due to processing errors, and the length of the closure is inconsistent due to positioning during the closure process, resulting in a certain deviation in the obtained locking force

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