CN201027823Y - Axially-movable three-sphere pin three-lug type universal joint finish forging slot shell - Google Patents

Abstract

The utility model discloses a three ball-socket three-lug gimbal finely-forged housing capable of axial movement, an interior cavity of the housing is a pylome with three crown surfaces distributed evenly inside the interior hole to form three fairways, and the exterior wall of the housing consists of three concave surfaces and three convex surfaces which alternate with the three concave surfaces, wherein, the convex surfaces on the exterior wall correspond to the three crown surfaces of the interior cavity, and flanges arranged on one section of the exterior wall are three lug type flanges. The three ball-socket three-lug gimbal finely-forged housing capable of axial movement has simple structure, capability to save raw materials, and the life span equaling to that in the prior art.

Description

A kind of can axially movable three ball pins, three ear formula universal joint finish forging pot shells

Technical field

The utility model relates to the constant velocity universal joint finish forging pot shell that a kind of car drivetrain system is adopted, be specifically related to a kind of can axially movable tripod universal joint finish forging pot shell.

Background technique

Can axially movable tripod universal joint because of its complex structure, processing, detection difficulty are big, it has many excellent properties such as compact structure, in light weight, low noise, reliability height, freedom from repairs.At present, the transmission system of the whole world car overwhelming majority all adopts the transmission part of this universal joint as key.Because of the operating characteristic of its product, so to the concentricity between these product three each structures of ball pin inner chamber and the required precision height of alley calibration.Because of its structure uniqueness,, also meet the trend of world today's development of manufacturing simultaneously both at home and abroad so manufacturing firm all adopts inner chamber precision forging blank technology at present, can satisfy required precision like this, has reduced manufacture cost and cycle again.

Existing can axially movable tripod universal joint finish forging pot shell, can axially movable tripod universal joint finish forging pot shell as Chinese patent application numbers 200620072856.0, its inner chamber is evenly distributed in the endoporus by three sections arc surfaces, form three alleys, its outer wall is a cylinder-like structure, inner chamber is a through hole, and the outer wall construction of its product causes waste of raw materials, the processing cost height.

Summary of the invention

The utility model provide a kind of simple in structure, saving raw material and reach a kind of of prior art working life can axially movable three ball pins, three ear formula universal joint finish forging pot shell.

The technological scheme that its technical problem that solves the utility model adopts is as follows: a kind of can axially movable three ball pins, three ear formula universal joint finish forging pot shells, its inner chamber is a through hole, described inner chamber is evenly distributed in the endoporus by three sections arc surfaces, form three alleys, its outer wall constitutes by three sections concave surfaces are alternate with three sections convex surfaces, three sections arc surfaces of convex surface on the described outer wall and inner chamber are corresponding, and an end of its outer wall is provided with flange, and described flange is three ear formula flanges.

Described outer wall is made of three sections circular arc concave surfaces and three sections alternate equal portions of arc convex surface.

The utility model is simple in structure, described outer wall is made of three sections circular arc concave surfaces and three sections alternate equal portions of arc convex surface, be complementary with three sections arc surfaces of its inner chamber, three sections arc surfaces of arc convex surface on the outer wall and inner chamber are corresponding, on the basis that guarantees the pot shell wall thickness, saved a large amount of raw material, overcome that prior art pot shell uneven thickness, interference are serious, the phenomenon of waste of raw materials, reduce manufacture cost, do not reduced the working life of product simultaneously; Be connected with outside with flange, be convenient to processing, sturdy and durable.

Description of drawings

Fig. 1 is existing plan view that can axially movable tripod universal joint finish forging pot shell

Fig. 2 is a kind of plan view that can axially movable three ball pins, three ear formula universal type finish forging pot shells of the utility model

Sequence number among the figure: 1, outer wall circular arc concave surface 2, outer wall arc convex surface 3, inner chamber arc surface 4, flange.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment, a kind of can axially movable three ball pins, three ear formula universal joint finish forging pot shells, its inner chamber is a through hole, described inner chamber is evenly distributed in the endoporus by three sections arc surfaces 3, form three alleys, its outer wall is made of three sections circular arc concave surfaces 1 and three sections arc convex surface 2 alternate equal portions, three sections arc surfaces 3 of arc convex surface 2 on the outer wall and inner chamber are corresponding, and an end of its outer wall is provided with flange 4, and described flange 4 is three ear formula flanges.The utility model forms by the specialized mould finish forge, is applicable in the transmission system of car of front-wheel drive.

Claims (2)

1. One kind can axially movable three ball pins, three ear formula universal joint finish forging pot shells, its inner chamber is a through hole, described inner chamber is evenly distributed in the endoporus by three sections arc surfaces (3), form three alleys, it is characterized in that: its outer wall is by three sections concave surfaces (1) and the alternate formation of three sections convex surfaces (2), convex surface on the described outer wall (2) is corresponding with three sections arc surfaces of inner chamber (3), and an end of its outer wall is provided with flange (4), and described flange (4) is three ear formula flanges.
2. 2. according to claim 1 a kind of can axially movable three ball pins, three ear formula universal joint finish forging pot shells, it is characterized in that: described outer wall is made of the alternate equal portions with three sections arc convex surface (2) of three sections circular arc concave surfaces (1).

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