Self-regulating device for pre-tightening force of ball screw nut pair

A ball screw nut, screw nut technology, applied in the direction of transmission, belt/chain/gear, mechanical equipment, etc., can solve the problem that the pre-tightening force cannot be adjusted in real time

Inactive Publication Date: 2018-08-31
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only provide pre-tightening force before the screw nut works, and the pre-tightening force cannot be adjusted in real time

Method used

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  • Self-regulating device for pre-tightening force of ball screw nut pair
  • Self-regulating device for pre-tightening force of ball screw nut pair
  • Self-regulating device for pre-tightening force of ball screw nut pair

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Embodiment Construction

[0032] The technical solutions of the present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0033] Such as Figure 1 to Figure 7 As shown, a self-adjusting device for pretightening force of a ball screw nut pair according to the present invention includes a screw 1, a driven screw nut 3, a rear wedge-shaped push block 4, a wedge-shaped top block 5, a partition plate 6, and a front wedge-shaped push block. The push block 7 and the driving screw nut 8, the driven screw nut 3 and the driving screw nut 8 are respectively sleeved on the outer diameter of the screw 1 through balls, the driving screw nut 8 is externally connected with a power output end, and the driven screw nut 3 is fixedly connected with the rear wedge-shaped push block 4, and the driving screw nut 8 is fixedly connected with the front wedge-shaped push block 7. The wedge-shaped top block 5 and the partition plate 6 are arranged between the rear wedge-shaped push...

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Abstract

The invention relates to the technical field of ball screw nut pairs, in particular to a self-regulating device for a pre-tightening force of a ball screw nut pair. The self-regulating device comprises a screw, a driven screw nut, a rear wedge-shaped pushing block, a wedge-shaped jacking block, a spacer plate, a front wedge-shaped pushing block and a driving screw nut; the driven screw nut and thedriving screw nut separately sheathe the outer diameter of the screw through balls; the driven screw nut is fixedly connected with the rear wedge-shaped pushing block; the driving screw nut is fixedly connected with the front wedge-shaped pushing block; the wedge-shaped jacking block and the spacer plate are arranged between the rear wedge-shaped pushing block and the front wedge-shaped pushing block; one side of the spacer plate is connected with the driven screw nut, and the other side of the spacer plate is connected with the driving screw nut; the driving screw nut is externally connectedwith a power output end; and the driving screw nut is used for driving the driven screw nut and the wedge-shaped jacking block to rotate synchronously through the spacer plate. The front wedge-shapedpushing block, the wedge-shaped jacking block, the rear wedge-shaped pushing block and the driven screw nut are driven by the driving screw nut rotating at a high rate to rotate through the spacer plate, and therefore, the pre-tightening force is produced on the driving screw nut and the driven screw nut.

Description

technical field [0001] The invention relates to the technical field of ball screw nut pairs, in particular to a self-adjusting device for the pretightening force of a ball screw nut pair. Background technique [0002] The ball screw nut pair is a mechanical device that converts rotary motion and linear motion. It is widely used in the feed system of modern machine tools. In order to eliminate the gap during the transmission process of the screw nut, the ball screw nut device is equipped with a preload. or means for eliminating gaps. [0003] When the traditional screw-rotating ball screw pair is installed horizontally, due to the large gravity of the screw itself, large bending deformation and large rotational inertial force, the energy consumption will inevitably increase and the vibration will be serious. When the screw rotates at high speed, the temperature rises seriously. The bending deformation, thermal deformation and cutting load deformation caused by the screw's ow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/22
CPCF16H25/2209
Inventor 卢红刘琪段蒙马明天
Owner WUHAN UNIV OF TECH
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