CN204387116U - The net-size forging of a kind of Lightweight car wheel hub flange mandrel - Google Patents

Abstract

A precision forging of a lightweight automobile hub flange mandrel, belonging to the technical field of bearings, comprising a flange neck, a reinforcing rib and a flange plate integrally arranged; the reinforcing rib is arranged at the joint of the flange neck and the flange plate; A circle of protruding rings is arranged on the outer peripheral surface of the flange; the peripheral surface of the protruding ring is flush with the peripheral surface of the flange; the cross section of the protruding ring is a right-angled trapezoid, The hypotenuse and the central axis of the flange mandrel form an angle of 150°~170°. This light-weight automobile hub flange mandrel precision forging, on the one hand, thins the thickness of the flange neck and flange plate, and increases the strength of the flange mandrel through reinforcing ribs, which greatly reduces the weight of the flange mandrel and saves On the other hand, by setting a ring of protruding rings on the outer peripheral surface of the flange, the contact surface between the manipulator and the flange mandrel in the precision forging process is increased, and the gripping of the manipulator is more stable.

Description

A precision forging of lightweight automobile hub flange mandrel

technical field

The utility model belongs to the technical field of bearings, in particular to a precision forging of a lightweight automobile wheel hub flange mandrel.

Background technique

The flange mandrel is a component of the car hub, which bears both axial load and radial load, and is an important part of the car's load and rotation.

Due to the advantages of fast production cycle, high forming precision, near-net shape, low production cost and low environmental impact, high-speed forging has been widely used in the automotive gearbox parts and bearing industries.

Since the flange wall thickness of the lightweight automobile hub flange mandrel is usually 3~11mm, for products below 8mm, there are always problems such as unstable transmission, unstable production, and low production efficiency during high-speed precision forging. In order to solve the above problems, it is usually necessary to increase the thickness of the clamping surface, but if the overall thickness of the end surface is increased, a large amount of material consumption will be increased for forging, and the corresponding production cost will also be greatly increased, including for the subsequent car processing process. , The increase of the margin means that the turning time is prolonged, the efficiency is reduced, and the turning cost is increased.

Therefore, it is urgent to solve the problem of transmission stability of thin flange mandrel precision forgings in high-speed precision forging equipment.

Utility model content

The purpose of the utility model is to overcome the defects and deficiencies mentioned above, and provide a precision forging of a lightweight automobile hub flange mandrel precision forging.

The technical scheme that the utility model realizes that its purpose adopts is as follows.

A precision forging of a lightweight automobile hub flange mandrel, comprising a flange neck, a reinforcing rib, and a flange plate integrally arranged; the reinforcing rib is arranged at the junction of the flange neck and the flange plate; the flange plate A circle of convex ring is arranged on the outer peripheral surface of the flange; the peripheral surface of the convex ring is flush with the peripheral surface of the flange; The central axis of the blue mandrel is at an intersection angle of 150°~170°.

There are four reinforcing ribs arranged axially; the intersection angle between adjacent reinforcing ribs is 90°.

The flange neck is provided with a first channel and a second channel from top to bottom; the diameter of the first channel is smaller than that of the second channel.

The connection between the flange neck and the flange is chamfered.

A dimple is arranged in the middle of the outer end surface of the flange.

The hypotenuse of the cross-section of the convex ring forms an angle of 160° with the central axis of the flange mandrel; the width of the right-angled waist of the cross-section of the convex ring is 2mm; the width of the upper bottom of the cross-section of the convex ring is 2mm.

This light-weight automobile hub flange mandrel precision forging, on the one hand, thins the thickness of the flange neck and flange plate, and increases the strength of the flange mandrel through reinforcing ribs, which greatly reduces the weight of the flange mandrel and saves On the other hand, by setting a ring of protruding rings on the outer peripheral surface of the flange, the contact surface between the manipulator and the flange mandrel in the precision forging process is increased, so that the manipulator clamps more stably, and overcomes the problem caused by the manipulator. The sensor alarm caused by unstable clamping and shaking improves the metal fluidity during forging and improves the mechanical properties of the product.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the sectional view of A-A plane among Fig. 1;

In the figure: 1-flange neck, 1a-first channel, 1b-second channel, 2-reinforcing rib, 3-flange, 3a-protruding ring, 3b-dimple.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

A precision forging of a lightweight automobile hub flange mandrel, comprising a flange neck 1, a reinforcing rib 2, and a flange plate 3 integrally arranged; the reinforcing rib 2 is arranged at the junction of the flange neck 1 and the flange plate 3 ; The outer peripheral surface of the flange 3 is provided with a circle of protruding ring 3a; the peripheral surface of the protruding ring 3a is flush with the peripheral surface of the flange 3; the cross section of the protruding ring 3a is a right-angled trapezoid, The hypotenuse of the cross-section of the convex ring 3a forms an angle of 150°-170° with the central axis of the flange mandrel.

As a preference, the hypotenuse of the cross-section of the protruding ring 3a forms an angle of 160° with the central axis of the flange mandrel; the width of the right-angled waist of the cross-section of the protruding ring 3a is 2 mm; The width of the bottom is 2mm.

The setting of the convex ring 3a increases the clamping surface of the flange mandrel during high-speed precision forging, thereby improving the stability of the manipulator's transmission and at the same time being more conducive to the flow forming of the metal, so that the flange mandrel can be applied High-speed precision forging molding meets the requirements of the automotive industry for the quality and production capacity of this type of product, and overcomes the technical problems of high scrap rate and low production efficiency in the forging of flange mandrels.

There are four reinforcing ribs 2 arranged axially; the intersection angle between adjacent reinforcing ribs 2 is 90°. As the automotive market has higher and higher requirements for emission reduction and fuel consumption, and the development of hub bearings is also developing towards light weight, the thickness of the flange plate 3 is changed from the original uniform thickness to partially relying on the ribs 2 to meet the strength requirements. Thinning of parts has met the requirement of reducing weight.

The flange neck 1 is provided with a first channel 1a and a second channel 1b from top to bottom; the diameter of the first channel 1a is smaller than that of the second channel 1b. The first channel 1a is used to limit the trajectory of rolling elements such as steel balls. The second channel 1b is used for installing sealing rings and other devices. The whole structure has compact layout and simple assembly.

The connection between the flange neck 1 and the flange 3 is chamfered, which saves material and reduces product weight on the one hand, and avoids stress concentration on the other hand.

A dimple 3b is provided in the middle of the outer end surface of the flange 3 .

The utility model has been described according to the embodiments. On the premise of not departing from the principle, the device can also be modified and improved. It should be pointed out that all technical solutions obtained by means of equivalent replacement or equivalent transformation fall within the protection scope of the present utility model.

Claims (6)

1. a Lightweight car wheel hub flange mandrel net-size forging, is characterized in that, comprises the neck flange (1), stiffening rib (2) and the flange plate (3) that are wholely set; Described stiffening rib (2) is arranged on the joint of neck flange (1) and flange plate (3); The outer circumference face of described flange plate (3) is provided with a circle bulge loop (3a); The circumferential surface of described bulge loop (3a) and the circumferential surface of flange plate (3) flush; The cross section of described bulge loop (3a) is at right angles trapezoidal, and the hypotenuse of described bulge loop (3a) cross section and the axis of flange mandrel are 150 ° ~ 170 ° angles of cut.

2. a kind of Lightweight car wheel hub flange mandrel as claimed in claim 1 net-size forging, is characterized in that, described stiffening rib (2) has 4, and axially arranges; The angle of cut of adjacent said rib (2) is 90 °.

3. a kind of Lightweight car wheel hub flange mandrel as claimed in claim 1 net-size forging, is characterized in that, described neck flange (1) is provided with the first raceway groove (1a) and the second raceway groove (1b) from top to bottom; The diameter of described first raceway groove (1a) is less than the second raceway groove (1b).

4. a kind of Lightweight car wheel hub flange mandrel as claimed in claim 1 net-size forging, is characterized in that, the joint chamfering of described neck flange (1) and flange plate (3) is arranged.

5. a kind of Lightweight car wheel hub flange mandrel as claimed in claim 1 net-size forging, is characterized in that, is provided with recess (3b) in the middle part of the exterior edge face of described flange plate (3).

6. a kind of Lightweight car wheel hub flange mandrel as claimed in claim 1 net-size forging, is characterized in that, the hypotenuse of described bulge loop (3a) cross section and the axis of flange mandrel are 160 ° of angles of cut; The width of the right angle waist of described bulge loop (3a) cross section is 2mm; The width of the upper base of described bulge loop (3a) cross section is 2mm.