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Novel heat pipe ball screw

A ball screw and heat pipe technology, used in metal processing machinery parts, maintenance and safety accessories, metal processing equipment, etc. Application and other problems, to achieve the effect of optimizing the structure form and layout, simple structure and reducing temperature gradient

Inactive Publication Date: 2019-12-13
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This cooling method has the problems of large temperature gradient and temperature fluctuation on the surface of the ball screw and a long time to reach thermal equilibrium. The above defects limit the application of the ball screw in the field of high precision

Method used

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  • Novel heat pipe ball screw
  • Novel heat pipe ball screw
  • Novel heat pipe ball screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, this embodiment provides a new type of heat pipe ball screw, including a screw body, a heat pipe flow channel, a working fluid, and a flow channel plug. The screw body is a stepped shaft member, and the screw body includes a connecting section 2, The first support section 3, the external thread section 4, the second support section 5, the first support section 3 is arranged on the left side of the external thread section 4, the second support section 5 is arranged on the right side of the external thread section 4, and the connecting section 2 is arranged on the first On the left side of the support section 3, the connection section 2 is configured to be fixedly connected to the output end of the motor through a coupling, and the first support section 3 is configured to install a fixed end bearing to limit the axial and radial degrees of freedom of the screw body , the second support section 5 is configured to install a floating end bearing fo...

Embodiment 2

[0046] On the basis of Example 1, the number of heat pipe runners is 3, and each heat pipe runner is symmetrically and uniformly distributed in the radial section of the lead screw body, and the first ends of the three heat pipe runners communicate with each other. A liquid-absorbing core is fixedly arranged on the inner cavity wall of the flow channel, and the liquid-absorbing core is a multi-layer net tube core.

[0047] A liquid cooling area is provided on the right side of the second support section 5, so that the second end of the heat pipe flow path is always kept at a lower temperature.

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Abstract

The invention discloses a novel heat pipe ball screw, and relates to the technical field of ball screws. The novel heat pipe ball screw comprises a screw body, a heat pipe flow channel, working mediaand a flow channel plug. The screw body is a shaft member; the screw body comprises an external thread section; the heat pipe flow channel is a hole-shaped cavity closed at one end and opened at the other end, the first end of the heat pipe flow channel is a closed end and is arranged at the left end of the screw body, the second end of the heat pipe flow channel is an opened end and is arranged on the right end face of the screw body, and the heat pipe flow channel penetrates through the external thread section in the axial direction; the flow channel plug is fixedly arranged at the second end face of the heat pipe flow channel and seals the heat pipe flow channel; and after an inner cavity of the heat pipe flow channel is vacuumized, the working media are injected into the inner cavity of the heat pipe flow channel. By implementing the novel heat pipe ball screw, the temperature gradient of the screw surface can be effectively reduced, the temperature fluctuation of the screw surfaceis suppressed, and the time needed for the screw to reach heat balance is shortened.

Description

technical field [0001] The invention relates to the technical field of ball screws, in particular to a novel heat pipe ball screw. Background technique [0002] In the feed system of precision machine tools, the ball screw pair transmission system is the main form of the drive system. During the ball screw pair transmission process, a large amount of heat will be generated in the contact area (screw nut, bearing, etc.), causing the screw to generate The thermal deformation error affects the machining accuracy of the machine tool and the transmission stiffness of the feed system; and as the screw speed increases, the thermal deformation becomes more serious, resulting in a decrease in the machining accuracy of the machine tool; in various types of machine tools, the thermal deformation error accounts for about 30% to 50% of the total error; therefore, in the feed system of precision machine tools, the thermal deformation of the ball screw must be controlled. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q5/40B23Q11/12
CPCB23Q5/40B23Q11/126
Inventor 丁晓红胡冕
Owner UNIV OF SHANGHAI FOR SCI & TECH
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