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Double screw nut gap eliminating device

A technology of silk nut and anti-backlash, applied in the field of machine tools, can solve problems such as poor positioning accuracy, and achieve the effect of simple structure

Inactive Publication Date: 2011-05-11
WEIHAI HUADONG AUTOMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a double screw nut anti-backlash device, which can not only solve the problem of poor movement and positioning accuracy of the machine tool caused by the gap between the screw rod and the nut of the machine tool, which can not only solve the problems caused by the forward and reverse movement of the worktable. Positive and negative clearance, and effectively control the vibration caused by the movement process, without any influence on the effective stroke of the screw, simple structure, safe and reliable

Method used

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so as to help understand the content of the present invention.

[0012] Such as figure 1 As shown, the present invention fixes the left screw nut 5 on the left end of the bracket 1 with the hexagon socket head cap screw 3 and the anti-loosening washer 2, connects the screw rod 4 with the left screw nut 5, then connects the right screw nut 6 with the screw rod 4, adjusts The right screw nut 6, so that the screw rod 4 has no axial clearance and can rotate freely. Use another hexagon socket head cap screw and a lock washer to fix the right screw nut 6 on the right end of the bracket 1. At this time, the left end surface of the left screw nut 5 thread and The right end face of the screw thread 4 is in contact with the right end face of the thread of the right screw nut 6 and the left end face of the thread of the screw rod 4, that is, the left and ri...

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Abstract

The invention relates to a double screw nut gap eliminating device, and belongs to the field of machine tools. The device is provided with a lead screw. The device is characterized in that: a left screw nut is arranged on the left side of the lead screw, a right screw nut is arranged on the right side of the lead screw, the left screw nut is fixed at the left end of a bracket through an inner hexagon screw, and the right screw nut is fixed at the right end of the bracket through an inner hexagon screw. The device has simple structure, can solve forward and reverse gaps generated by the forward and reverse movement of a workbench, effectively controls the joggling problem caused in the movement process, has no any influence on effective stroke of the lead screw, and is safe and reliable.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to a backlash-removing device for double wire nuts for improving the movement and positioning accuracy of the machine tool. Background technique [0002] As we all know: when the machine tool is driven by an ordinary trapezoidal threaded screw, there is a gap between the screw and the nut, which has a great impact on the movement and positioning accuracy of the machine tool. To solve this problem, machine tool manufacturers usually use the method of lengthening the nut. Reduce the gap of the screw and improve the connection accuracy of the screw, but the effect is not obvious and when the table moves, that is, the screw rotates, the contact surface between the screw and the nut increases, and the friction increases, which affects the normal service life of the screw. Contents of the invention [0003] The purpose of the present invention is to provide a double screw nut anti-backlash...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q5/56
Inventor 王黎明刘红伟戚勇斌谭景瑞
Owner WEIHAI HUADONG AUTOMATION
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