Floating supporting structure of ball screw pair and method for preventing shaking

Abstract

The invention discloses a floating supporting structure of a ball screw pair and an anti-shaking method, the floating supporting structure comprises a fixed-point supporting plate, a floating supporting seat and a return stroke resetting seat, the fixed-point supporting plate is fixed on a machine tool platform below the middle part of a screw rod, a track parallel to the screw rod is arranged on the fixed-point supporting plate, the floating supporting seat is connected to the fixed-point supporting plate, and the return stroke resetting seat is arranged on the fixed-point supporting plate. The return stroke reset seat is fixed to the bottom of the lead screw nut, two parallel reset claws are hinged to the return stroke reset seat and can be lifted up around a hinged shaft, the front ends of the reset claws are in a hook shape and matched with reset blocks on the two sides of a sliding block on the lower portion of the floating supporting seat, and idler wheels are arranged on the outer sides of the reset claws. The idler wheels are matched with trapezoid bosses on the two sides of a fixed-point supporting plate track, floating supporting is carried out on the lead screw in the middle of the lead screw through the floating supporting base and the fixed-point supporting plate, and the floating supporting base can be far away from the fixed-point supporting plate or reset to the fixed-point supporting plate along with the lead screw nut and the return stroke reset base fixed to the lead screw nut. Flexible floating supporting of the lead screw is achieved, shaking of the working state of the large-span horizontal lead screw is effectively prevented, and the working stability of the lead screw is improved.

Description

technical field [0001] The application relates to the structure of the ball screw pair in mechanical transmission technology, in particular to a floating support structure for the movement of the ball screw pair with a large span and a large stroke and a method for preventing vibration. Background technique [0002] As a functional component, the ball screw pair is widely used in various mechanical equipment, especially in CNC machine tools, due to its unique performance. However, when the ball screw pair is used in a large-stroke horizontal travel mechanism, due to the large span of the ball screw pair, it will sag and deflect greatly under the action of its own weight, resulting in vibration and jitter of the machine tool, which will aggravate the ball screw pair. wear and tear, reducing its service life. [0003] The general method is to pre-tension the bearings at both ends of the screw to reduce the droop of the screw and improve the rigidity of the screw. This method...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of the sagging deflection vibration of the ball screw pair operating under the condition of large span and large stroke, the present invention provides a floating support structure of the ball screw pair and a method for preventing vibration

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