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Fixing mechanisms for lead screw bearings

A fixed mechanism and fixed structure technology, applied in the direction of bearings, bearing components, shafts and bearings, etc., can solve problems that affect transmission and positioning accuracy, screw rod elongation, easy sagging, etc., to avoid string movement and bending, and facilitate loading and unloading , the obvious effect of supporting effect

Inactive Publication Date: 2016-12-07
CHENGDU PRECISE CNC MACHINE TOOL
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AI Technical Summary

Problems solved by technology

When the ball screw is applied to the X-axis transmission structure of the medium and large gantry machining center, due to the large X-axis stroke and the load bearing of the worktable, the length of the roller screw is long, and it is easy to sag under the action of its own weight, and during use, Due to the high temperature caused by friction, the screw itself will elongate to a certain extent, which will affect the transmission and positioning accuracy

Method used

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  • Fixing mechanisms for lead screw bearings
  • Fixing mechanisms for lead screw bearings
  • Fixing mechanisms for lead screw bearings

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Embodiment Construction

[0026] see Figure 1 to Figure 4 , shows the screw bearing fixing mechanism of the present invention.

[0027] The fixing mechanism for the screw bearing is applied in the screw transmission device, figure 1 The shown screw drive device includes a base 101, on which a ball screw assembly is arranged, and the ball screw assembly includes a screw 102 and a nut 103 arranged around the screw 102, and a moving platform is arranged on the nut 103 104, the mobile platform 104 can carry out linear motion in a certain direction through the guide device, so the rotary motion of the screw mandrel 102 can be converted into the linear motion of the nut 103 and the mobile platform, and the two ends of the screw mandrel 102 are respectively provided with The fixing mechanism 105 for the left bearing and the fixing mechanism 106 for the right bearing are the fixing mechanisms for the screw bearing of the present invention.

[0028] see Figure 2 to Figure 4 , which specifically shows the d...

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Abstract

The invention relates to fixing mechanisms for lead screw bearings, and the fixing mechanisms are applied to a lead screw transmission device. The lead screw transmission device comprises a base which is provided with a ball screw assembly; and the ball screw assembly comprises a lead screw and a nut arranged around the lead screw, a movement platform is arranged on the nut, and the two ends of the lead screw are provided with the fixing mechanism for the left bearing and the fixing mechanism for the right bearing correspondingly. The fixing mechanism for the left bearing and the fixing mechanism for the right bearing comprise a first bearing fixing structure, a second bearing fixing structure and a third bearing fixing structure; the first bearing fixing structure is arranged at the middle portion and fixedly connected with the above base; the second bearing fixing structure is fixed to one side of the first bearing fixing structure; and the third bearing fixing structure is fixed to the other side of the first bearing fixing structure, and therefore a three-bearing structure is formed. On one hand, radial supporting is achieved through the first bearing fixing structure in the middle; and on the other hand, fine adjustment axial supporting and certain radial supporting are achieved through the second bearing fixing structure and the third bearing fixing structure on the two sides.

Description

technical field [0001] The invention relates to the technical field of ball screws, in particular to a fixing mechanism for screw bearings. Background technique [0002] my country's machine tool industry has grown from scratch, transformed from extensive to precise, and has formed a relatively complete system of product research and development and production. The ball screw support bearing is an important part of various CNC precision machining equipment, precision measuring equipment, and robot transmission mechanisms with high precision and high speed. [0003] The ball screw is composed of a screw, a nut and a ball. Its function is to convert rotary motion into linear motion. It is widely used in various industrial equipment and precision instruments due to its small frictional resistance. When the ball screw is applied to the X-axis transmission structure of the medium and large gantry machining center, due to the large X-axis stroke and the load bearing of the workta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C19/54F16C33/58
CPCF16C19/54F16C33/58
Inventor 李青梁吉平朱洪李知密
Owner CHENGDU PRECISE CNC MACHINE TOOL
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