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Linear retainer and ball spline device

A cage and straight line technology, applied in the direction of transmission, linear motion bearings, bearings, etc., can solve the problems of high calorific value, affecting the smooth operation of balls, and large climbing heights, so as to reduce noise, avoid softening and deformation, and balls The smooth effect of the cycle

Pending Publication Date: 2020-08-04
上海莱恩精密机床附件有限公司
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AI Technical Summary

Problems solved by technology

[0005] The embodiments of the present invention aim at the problem that the ball circulation track of the linear retainer has a large climbing height during the climbing stage of the above-mentioned ball spline device, which affects the smooth operation of the balls and the high calorific value, and provides a linear retainer and a ball Spline device

Method used

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  • Linear retainer and ball spline device
  • Linear retainer and ball spline device
  • Linear retainer and ball spline device

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] like image 3 , 4 Shown is a schematic structural view of the linear cage provided by the embodiment of the present invention, which can be applied to a ball spline device and provides a recirculating raceway for the balls. The linear cage in this embodiment includes a tubular body 3, which includes a cylindrical surface and a spline shaft hole enclosed by the cylindrical surface. The outer wall of the above-mentioned tubular body 3 (i.e. the outer wall of the cylindrical surface) includes a plurality of ball circulation tracks, and each ball circulation track includes a straight channel s...

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Abstract

The invention provides a linear retainer and a ball spline device. The linear retainer comprises a main tubular body, and the outer wall of the main tubular body comprises a plurality of ball circulation tracks. Each ball circulation track comprises a linear channel segment, a linear passage segment, two climbing step stages and two arc-shaped turning segments. At least one climbing step stages comprises a first transition segment connected with the second end of the arc-shaped turning segments, a second transition segment connected with the linear channel segment and an inclined segment positioned between the first transition segment and the second transition segment. The impact of a ball in movement between the inclined segment and the arc-shaped turning segments is reduced through the first transition segment, and the impact of the ball in movement between the inclined segment and the linear channel segment is reduced through the second transition segment. The linear retainer can smooth the cycle running process of the ball, thus improving the smoothness of the ball running in the ball circulation tracks.

Description

technical field [0001] Embodiments of the present invention relate to the field of ball screws and ball splines, and more specifically, to a linear cage and a ball spline device. Background technique [0002] Linear motion devices are widely used in the industrial automation industry. With the improvement of equipment accuracy, operating efficiency, quietness, and life expectancy, ball spline pairs have gradually become common applications. Ball splines can simultaneously perform smooth linear motion and rotational torque transmission by means of balls and precision-ground rolling grooves. Due to the use of the contact angle design, in addition to high sensitivity, the ball spline can also greatly improve the load performance, and is suitable for occasions with large vibration and shock, high positioning accuracy requirements, high-speed motion performance requirements, and low noise. By adjusting the preload in the application, the ball spline can meet the characteristics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C29/06F16H25/22F16H25/24
CPCF16C29/0676F16H25/2204F16H25/24
Inventor 杨升吴永利
Owner 上海莱恩精密机床附件有限公司
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