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Linear motion device, ball screw device, method for preventing rust of linear motion device, and method for removing rust preventive agent

A linear motion, ball screw technology, applied in the direction of transmission, transmission parts, mechanical equipment, etc., can solve the problems of low fluidity, increased rotational torque, and no discussion of grease performance, and achieves improved production efficiency and lightening. Effects of time and labor

Inactive Publication Date: 2019-03-08
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, this Patent Document 1 discloses that for lubricating performance in a dynamic environment, it is preferable to set the unmixed consistency within the range of 190 to 250 (25° C.). If the unmixed consistency is less than 190, the fluidity is too low and the The rotation torque increases, and if it exceeds 250, it will be too soft and the amount of dust will increase. However, there is no discussion on the grease performance in static environments such as rust prevention before use.

Method used

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  • Linear motion device, ball screw device, method for preventing rust of linear motion device, and method for removing rust preventive agent
  • Linear motion device, ball screw device, method for preventing rust of linear motion device, and method for removing rust preventive agent
  • Linear motion device, ball screw device, method for preventing rust of linear motion device, and method for removing rust preventive agent

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no. 1 Embodiment approach

[0076] while referring to figure 1 A ball screw device as a linear motion device according to the first embodiment of the present invention will be described. figure 1 It is a partial sectional view showing the configuration of the ball screw device 1 according to the first embodiment of the present invention. Such as figure 1 As shown, the ball screw device 1 has: a screw shaft 2 ; and a nut 4 attached to the screw shaft 2 via a plurality of balls 3 .

[0077] The screw shaft 2 is formed of an elongated cylindrical metal member, and a spiral groove 2 a having a substantially arc-shaped cross section is helically formed on the outer peripheral surface of the screw shaft 2 .

[0078] The nut 4 has a substantially cylindrical shape in which a circular through hole larger than the outer diameter of the screw shaft 2 is formed, and is formed of a metal material. On the inner peripheral surface of the nut 4 , a helical groove 4 a having a substantially arc-shaped cross section i...

no. 2 Embodiment approach

[0098] while referring to image 3 The linear guide device 21 as the linear motion device according to the second embodiment of the present application will be described. image 3 It is a perspective view which shows the linear guide apparatus 21 concerning 2nd Embodiment of this application.

[0099] Such as image 3 As shown, the linear guide device 21 according to the second embodiment of the present application includes: a slender rectangular column-shaped guide rail 22; twenty three. exist image 3 In , the state after the guide rail 22 is attached to the attached portion 26 is shown.

[0100] The guide rail 22 is made of metal and is formed with a plurality of image 3 Bolt holes 29 passing through in the Z-axis direction are shown. The length of the guide rail 22 can be appropriately adjusted according to the application. In the guide rail 22 , corner rolling grooves 27 a , 27 b and side rolling grooves 28 a , 28 b extending in the X-axis direction are formed wit...

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Abstract

When this linear motion device (1) is shipped, an anti-rust grease is filled between a first member (2) and a second member (4), and a seal member (6) is configured such that a lubricating grease supplied with an automatic oil supply method pushes the anti-rust grease through the space between the seal member (6) and the second member (4) and to outside of the first member (2). Thereby, the time and work spent on anti-rust oil treatment before installation are reduced, improving production efficiency. Also provided are a ball screw device, a rust prevention method for the linear motion device and an anti-rust agent removal method.

Description

technical field [0001] The present invention relates to linear motion devices such as ball screw devices and linear guide devices used in semiconductor manufacturing equipment, extrusion molding machines, injection molding machines, or general conveying devices, methods for preventing rust of linear motion devices, and grease for rust prevention. removal method. Background technique [0002] The so-called linear motion device refers to the following device, which has: a first member; a second member; Moving rolling body. As the linear motion device, there are, for example, a ball screw device and a linear guide device. [0003] The ball screw device is configured such that a ball rolling groove is helically formed on an inner peripheral surface of a nut and an outer peripheral surface of a screw shaft (screw shaft), and the nut is formed when the screw shaft is inserted into the nut. A plurality of balls are accommodated in a ball rolling groove between the screw shaft an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C31/06C10M171/00F16C33/66F16H25/24C10N20/00C10N30/12C10N40/00C10N40/02C10N50/10
CPCF16H25/2204F16H57/0497
Inventor 冈溪太郎丸山大介
Owner NSK LTD