Phillips screwdriver with positioning anti-slip function based on magnetorheological effect

Abstract

The invention relates to a magnetorheological-effect-based cross screwdriver with the positioning and anti-slipping functions. The magnetorheological-effect-based cross screwdriver with the positioning and anti-slipping functions is used for preventing the phenomenon that a bolt head is damaged due to the fact that relative slippage occurs between a screwdriver head and a bolt occurs when an operator overexert himself / herself to tighten or loosen the bolt through a screwdriver. The magnetorheological-effect-based cross screwdriver with the positioning and anti-slipping functions is composed of a shell, magnetorheological fluid, an isolation ring, an electromagnetic coil, a piston, a sealing ring, a piston rod, a cross bar, connecting rods, clamping rods, a cross screwdriver head, a size compensator, a sliding block, a button and a sliding groove. When the cross screwdriver head is stretched into a bolt head, a user slides the sliding block upwards to make the clamping rods clamp the bolt head tightly and then presses the button to power on the cross screwdriver, relative slippage will not be produced by the screwdriver head, the bolt head and the clamping rods when the screwdriver is rotated, and finally the bolt is tightened or loosened on the condition of guaranteeing that the bolt head is not scratched; the user presses the button again to power off the cross screwdriver and slides the sliding block downwards to make the clamping rods to loosen the bolt head, and then the whole bolt tightening or loosening process is completed.

Description

technical field [0001] The invention relates to a Phillips screwdriver with a positioning anti-slip function, in particular to a Phillips screwdriver with a positioning anti-slip function based on the magneto-rheological effect. Background technique [0002] In the assembly process of mechanical parts, most of the parts are connected by bolts. It often happens that when the staff tightens or loosens the bolts, the head of the screwdriver and the head of the bolt slip relative to each other. Insufficient strength of the bolt head will cause the bolt head to be worn by the head of the screwdriver, and finally cause an embarrassing situation that the screw cannot be tightened or loosened. In order to prevent this from happening, the present invention utilizes the characteristics of magnetorheological fluid, such as fast response, continuous, reversible, high shear yield stress, and low energy consumption, and combines it with the mechanical structure of the screwdriver to desig...

AI Technical Summary

Problems solved by technology

[0002] In the assembly process of mechanical parts, most of the parts are connected by bolts. It often happens that when the staff tightens or loosens the bolts, the head of the screwdriver and the head of the bolt slip relative to each other. If the strength of the bolt head is not enough, the bolt head will be worn by the head of the screwdriver, and finally cause the embarrassing situation that it cannot be tightened or loosened

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