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Motion device and movement device

A technology of moving devices and moving bodies, which is applied in the direction of linear motion bearings, bearings, combined bearings, etc., to achieve the effect of increasing the degree of freedom

Active Publication Date: 2012-08-29
THK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In addition, for the moving device described in Patent Document 1, which pivotally supports the peripheral surface of the moving body by bearings, although the moving body and the bearing are integrated to realize miniaturization, it cannot be said that it is sufficient, and further miniaturization is required, so there is a problem of how to reduce the size. Suppression of the above-mentioned issues of external dimensions

Method used

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  • Motion device and movement device
  • Motion device and movement device
  • Motion device and movement device

Examples

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Embodiment Construction

[0049] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0050] figure 1 It is an exploded perspective view showing a schematic structure of a ball spline as a moving device according to an embodiment of the present invention, figure 2 yes means figure 1 The top view of the simplified structure of the ball spline, Figure 3 to Figure 5 It is a plan view showing a schematic structure of a modified example of the ball spline.

[0051] Such as figure 1 and figure 2 As shown, the ball spline 1 as the motion device of this embodiment has an extended round bar-shaped or tubular spline shaft (orbit body) 2, and two rolling grooves ( Rolling element rolling surfaces) 2 a extend along the axis L direction (extension direction) of the spline shaft 2 and are arranged opposite to each other in the diameter direction of the spline shaft 2 . Furthermore, a cylindrical moving body 3 is provided so as to pass through the spline shaft...

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Abstract

A motion device and a movement device, in each of which the external dimension perpendicular to the direction in which a track body extends is kept as small as possible to reduce the size of the device. The motion device (1) has the track body (2) and a mobile body (3) inserted through the track body (2) and reciprocatably guided in the extension direction (L) of the track body (2). Cylindrical projections (6a) are pivotally supported by bearings (7) at the ends of the mobile body (3). The projections (6a) project in the extension direction (L) and are inserted through the track body (2). Theexternal dimension of a projection (6a), measured in the direction perpendicular to the extension direction (L), from the track body (2) as the center is smaller than the external dimension of the mobile body (3).

Description

technical field [0001] The present invention relates to a moving device and a moving device for relatively moving a moving body along an extended rail body such as a ball spline, a ball screw, and a guide. Background technique [0002] In the past, in order to feed and move workpieces or tools with high precision in mechanical equipment such as machine tools and various industrial machines, or to move movable parts with high precision in precision instruments, various types of Ball splines, ball screws, guides and other moving devices of standard size. In particular, in recent years, in response to the downsizing of machines and equipment, it is often required to downsize the moving devices constituting these machines and equipment. [0003] Generally, the moving device is configured to include an extending rail body, and a moving body that passes through the rail body and is supported so as to be movable along the extending direction of the rail body. Since the rolling el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C29/06F16C31/06
CPCF16C31/06F16C29/0685Y10T74/18056
Inventor 饭泉诚吉田明正青木慎史
Owner THK CO LTD