Pre-stretching lead screw

A pre-stretching and pre-stretching technology, applied in belts/chains/gears, mechanical equipment, transmission devices, etc., can solve the problems of ball screw deformation stroke, deviation, etc., to extend service life, improve rigidity, guarantee The effect of transmission accuracy

Pending Publication Date: 2019-03-12
NANTONG MACHINE TOOLS GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a pre-stretched screw to solve the stroke deviation caused by the deformation of the ball screw caused by the heat generated by the rotation friction of the ball screw in the prior art

Method used

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  • Pre-stretching lead screw
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0021] refer to Figure 1-2 As shown, an embodiment of a pre-stretching lead screw of the present invention, the lead screw 1 is installed on a fixed bracket 2, and one end of the fixed bracket 2 is provided with a driving device 3, and the driving device 3 is connected to the A shaft coupling 4 is arranged between the lead screws 1, and the shaft coupling 4 includes a first sleeve arranged at the end of the driving device 3 and a second sleeve arranged at the end of the lead screw 1, so The first shaft sleeve is engaged with the second shaft sleeve, so that the driving device 3 is connected to the screw 1, and the driving device 3 drives the screw 1 to rotate through the coupling...

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Abstract

The invention discloses a pre-stretching lead screw. The lead screw is installed on a fixing bracket; one end of the fixing bracket is provided with a driving device; a shaft coupler is arranged between the driving device and the lead screw; the shaft coupler is used for connecting the driving device with the lead screw; the driving device is used for driving the lead screw to rotate through the shaft coupler; the other end of the lead screw is provided with a pre-stretching device; the pre-stretching device is pre-tightened and fixed to one side of the lead screw; and the pre-stretching device is used for providing pre-stretching force for the lead screw. One end of the pre-stretching lead screw disclosed by the invention is provided with the pre-stretching device for balancing the elongation, generated by the generation of heat by friction, of the lead screw; the pre-stretching device is pre-tightened and fixed for providing pre-stretching force for the lead screw; after the lead screw is thermally elongated, the pre-stretching force is reduced without generating stroke errors of the lead screw, and thus the transmission precision of the lead screw is guaranteed. Compared with the lead screw in the prior art, the lead screw, which is additionally provided with the pre-stretching device, disclosed by the invention can eliminate thermal deformation influences generated in quickmovement, and thus the rigidity, the precision and the reliability of the lead screw can be improved.

Description

technical field [0001] The invention relates to the field of machining, in particular to a pre-stretched screw Background technique [0002] Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repeated force. It also has high precision, reversibility and high precision. Features of efficiency. Due to its small frictional resistance, ball screws are widely used in various industrial equipment and precision instruments. [0003] The existing ball screw rotates under the drive of the drive motor, and a large amount of heat will be generated due to friction during rotation. Due to the principle of heat expansion and contraction, when the temperature of the ball screw increases, the ball screw itself will Deformation occurs, resulting in a deviation in the stroke of the entire ball screw. Contents of the invention [0004] The techni...

Claims

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Application Information

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IPC IPC(8): F16H25/22F16H25/24
CPCF16H25/22F16H25/24
Inventor 周勇丁红星巫晓丽田晓燕
Owner NANTONG MACHINE TOOLS GROUP
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