A self-centering press-fitting device applied to long-span double-interference structures

Abstract

The invention relates to a self-centering press fitting device applied to long-span double-interference structures. The self-centering press fitting device comprises a base, a sleeve and a gland. A seam allowance on the outer circle of the base and a center hole are coaxial, and the center hole of the base is a standard of the device and is used for achieving insertion of a frame machining standard cylinder. The inner diameter of the center hole is matched with the outer diameter of the frame machining standard cylinder; the upper end of the seam allowance on the outer circle of the base is coaxially sleeved with the sleeve, and the inner diameter of the sleeve is matched with the diameter of an outer circle of a floating barrel; and the upper end of the sleeve is coaxially sleeved with the gland. The self-centering press fitting device applied to the long-span double-interference structures is a design scheme for keeping long-span double-interference self-centering core assemblies for fluid floated inertial instruments, fleeing or slanting of a frame and the floating barrel in the radial direction after axial force bearing is effectively limited, the centering press fitting accuracy is guaranteed, and the using performance and reliability of a fluid floated gyroscope are improved.

Description

technical field [0001] The invention relates to the technical field of liquid floating gyroscopes, in particular to a self-centering press-fitting device applied to long-span double-interference structures. Background technique [0002] The core components of the liquid floating gyroscope are the momentum moment generator and the damper in the gyroscope, as well as the rotor carrying the sensor and the actuator rotor, which are the core components of the liquid floating gyroscope. Its structural composition includes frame components and buoys. In order to ensure the design accuracy, the two ends of the frame and the buoy are usually fitted with an interference connection. [0003] The cooperation between the frame and the buoy, because the span of the frame and the buoy is about 60mm, the diameter of both ends is relatively large, about 50mm, and it is designed for over positioning, and both ends are interference fit, which is called double interference below. It is extrem...

AI Technical Summary

Problems solved by technology

It is extremely difficult to center the centering press

When the lower end enters the head, the upper end is prone to deflection, the interference press is not correct, and it is easy to squeeze and rub, resulting in extremely small excess. The tiny moving mass inside the core component of the gyroscope will have a fatal impact on the drift of the gyroscope.

If the excess is metal shavings, it will cause electrical failure of the gyroscope, and even affect performance and reliability

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