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Tripod constant-velocity universal joint and method for producing the same

A technology of constant velocity universal joints and manufacturing methods, which is applied to gear transmission mechanisms, elastic couplings, engine components, etc., can solve problems such as rising product costs and increased man-hours, and achieve the effect of realizing life expectancy and manufacturing man-hours

Active Publication Date: 2012-04-04
NTN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, man-hours increase due to the turning process or the deburring process, resulting in an increase in the cost of the product

Method used

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  • Tripod constant-velocity universal joint and method for producing the same
  • Tripod constant-velocity universal joint and method for producing the same
  • Tripod constant-velocity universal joint and method for producing the same

Examples

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Embodiment Construction

[0054] Hereinafter, embodiments of the present invention are described in detail. In addition, in the following embodiment, the double-roller type tripod type constant velocity universal joint which can reduce vibration at the time of operation is illustrated as an example. The present invention is also applicable to other tripod type constant velocity universal joints such as single roller types other than the double roller type.

[0055] Figure 5 and Figure 6 The main parts of the tripod type constant velocity universal joint of the illustrated embodiment include an outer ring 10 as an outer joint member, a tripod member 20 as an inner joint member, and a roller unit 30 as a torque transmission member. One of the two shafts on the driving side and the driven side is connected to the outer ring 10 , and the other is connected to the tripod member 20 .

[0056] The outer ring 10 is cup-shaped with one end open, and three linear track grooves 12 extending in the axial dire...

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PUM

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Abstract

Disclosed is a method for producing a tripod constant-velocity universal joint comprised of an outer ring which has an inner peripheral surface in which three axially extending track grooves are formed, and has roller guiding surfaces axially extending in both sides of each track groove; a tripod member having three leg shafts which are radially projected; and roller units which are rotatably supported by the leg shafts of the tripod member, and are rotatably inserted to the track grooves of the outer ring, wherein, when the material of the leg shaft is forged into a shape of the leg shaft by a molding surface of a molding die, a relief portion is provided on the material front end-side of the molding die, and the outer peripheral surface of the material is molded into a convex round shape by a tapered surface formed in the molding surface to be in contact with the outer peripheral surface of the material and a concave round surface formed between the molding surface and the tapered surface.

Description

technical field [0001] The present invention relates to a tripod type constant velocity universal joint used in power transmission systems such as motor vehicles, airplanes, ships, and various industrial machines, such as assembled in A type of sliding constant velocity universal joint that allows axial displacement and angular displacement between the two shafts on the driving side and the driven side in the drive shaft or propeller shaft of 4WD vehicles or FR vehicles. Background technique [0002] For example, there is a tripod type constant velocity universal joint used as a mechanism for transmitting rotational force from an engine of an automobile to wheels at a constant velocity. This tripod type constant velocity universal joint connects the two shafts on the driving side and the driven side, and can transmit rotational torque at a constant speed even if the two shafts have an operating angle, and has the ability to allow axial relative Variable structure. [0003]...

Claims

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Application Information

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IPC IPC(8): F16D3/205B21K1/14F16D3/20
CPCF16D3/2055B21K1/762F16D2250/00F16D2003/2026B21K1/763
Inventor 五十公野纯一小中健司村上裕志世良昌缪家骅牧野俊介
Owner NTN CORP
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