A thimble type micro-pulse applying device

Abstract

The invention provides a thimble-type micro-pulse applying device, comprising: a central rod, the center rod is placed vertically as the balance position; two thimbles, the two thimbles are symmetrically distributed with the central rod as the axis, and the thimbles have needle points; The connection structure, the transfer structure fixedly connects the center rod with the two thimbles; one impact part, the impact part is installed at the lower part of the center rod; two bearing seats have concave arc-shaped surfaces, and two thimbles are placed on the bearing seats, The needle tip is in contact with the concave arc surface; a bracket is used to place two bearing seats horizontally; the needle tip of the thimble is connected with the two contact points of the concave arc surface of the bearing seat to form a horizontal line, and the center rod swings with it The center of gravity of the overall structure is lower than the horizontal line, and the central rod can swing with the horizontal line as the rotation axis, and the contact area is small, so as to achieve the purpose of reducing frictional damping. The height of the balance weight on the central rod is changed through thread matching rotation, so as to change the position of the center of gravity of the swing structure.

Description

technical field [0001] The invention relates to the technical field of precision mechanics, in particular to a thimble-type micro-pulse applying device. Background technique [0002] The application and precise measurement of micro-thrust and micro-impulse are of great significance to fields including aerospace propulsion and instrument and equipment manufacturing. [0003] The traditional way of applying tiny impulses to micro-impulse testing mechanisms is to use a knife-edge pendulum device: this device is often equipped with a force-sensitive sensor at the impact position. Specifically, the force-sensitive sensor is fixed to the swing arm, and the swing arm is pulled for a certain distance by a thin rope. After releasing it, due to the effect of gravity, the swing arm will drive the force-sensitive sensor to swing and hit the measured object. The force and time length of the knocking process can be output from the force sensitive sensor, so as to obtain the change of the...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a thimble type micro-pulse applying device to solve the problems of poor stability and large resistance of the existing micro-pulse applying device

[0005] The object of the present invention is also to provide a thimble type micro-pulse application device to solve the problem that the existing micro-pulse application device cannot accurately adjust the size of the applied micro-pulse

Images