CN214743036U

CN214743036U - Novel dynamic balance sheet

Info

Publication number: CN214743036U
Application number: CN202120902727.4U
Authority: CN
Inventors: 陈黎琪; 黎海
Original assignee: Shanghai GKN Huayu Driveline Systems Co Ltd
Current assignee: Shanghai GKN Huayu Driveline Systems Co Ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-11-16
Anticipated expiration: 2031-04-28

Abstract

The utility model provides a novel dynamic balance piece is equipped with a plurality of bump on the side that dynamic balance piece is close to the central siphon, the dynamic balance piece is kept away from it has a plurality of recess to open on the another side of central siphon, the recess is linked together with the bump, and the width is greater than the width of bump. The utility model discloses a set up the recess above the bump, reduced near the thickness of concave point dynamic balance piece for the dynamic balance piece can satisfy the needs that adopt different welding current's dynamic balancing machine, has promoted production efficiency.

Description

Novel dynamic balance sheet

Technical Field

The utility model relates to an automobile transmission shaft processing technology field especially relates to a novel dynamic balance piece.

Background

The automobile transmission shaft is an important part for transmitting power in an automobile transmission system, is a rotating body with high rotating speed and few supports, and the manufacturing tolerance, the uneven wall thickness of a tubular part and the deviation of certain roundness can cause the dynamic unbalance of the transmission shaft, so that abnormal sound and vibration are generated in the driving process of an automobile, and related parts can be damaged in serious cases to cause serious accidents, so that the dynamic balance correction needs to be carried out in the processing process of the transmission shaft. The dynamic balance correction is generally to weld dynamic balance sheets on the outer wall of the shaft tube by means of resistance projection welding, so as to reduce the unbalance amount of the shaft tube.

The dynamic balancing machine is mainly used for measuring the unbalance amount and is matched with equipment such as a welding machine and the like to correct the unbalance amount. As shown in fig. 1, the welding current of the high-end dynamic balancer is small, the thermal influence range is small, and when the thick dynamic balancer piece with the large salient point is welded with the shaft tube 100, the binding force between the thick dynamic balancer piece and the thick dynamic balancer piece is small, so that the thick dynamic balancer piece is easy to fall off, and therefore, only the thin dynamic balancer piece 200 with the small salient point 201 can be firmly welded with the shaft tube 100. As shown in fig. 2, the low-end dynamic balancer has a large welding current and a large thermal influence range, which may damage the thin dynamic balancer blade with the small salient points, and is only suitable for firmly welding the thick dynamic balancer blade 300 with the large salient points 301 to the shaft tube 100, but the shaft tube at the salient points has a large reduction in torsional fatigue resistance.

In conclusion, the high-end dynamic balancing machine has small welding current, cannot weld thick dynamic balancing pieces with larger mass, and cannot balance a transmission shaft with larger initial unbalance; the low-end dynamic balancing machine has large welding current, cannot weld thin dynamic balancing pieces with smaller quality, and cannot produce a transmission shaft with high balancing precision requirement.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned deficiencies, an object of the present invention is to provide a novel dynamic balancing piece, which can meet the production requirements of high-end dynamic balancing machines and low-end dynamic balancing machines.

The utility model provides a novel dynamic balance piece is equipped with a plurality of bump on one side of dynamic balance piece, it has a plurality of recess to open on the another side of dynamic balance piece, the recess is linked together with the bump, and the width is greater than the width of bump.

Preferably, the dynamic balance sheet is arc-shaped and matched with the outer wall of the shaft tube of the transmission shaft.

Preferably, the cross-section of the groove is circular.

Preferably, the number of the grooves is the same as that of the bumps, and the grooves and the bumps are in one-to-one correspondence.

The utility model discloses a set up the recess above the bump, reduced near the thickness of concave point dynamic balance piece for the dynamic balance piece can satisfy the needs that adopt different welding current's dynamic balancing machine, has promoted production efficiency.

Drawings

FIG. 1 is a schematic view of a conventional connecting structure of a thin dynamic balance piece and a shaft tube;

FIG. 2 is a schematic view of a connection structure of a thick dynamic balance piece and a shaft tube in the prior art;

fig. 3 is a schematic view of the connection structure of the dynamic balance piece and the axle tube of the present invention.

Element number description:

1 axle tube

2 dynamic balance sheet

21 salient point

22 groove

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

As shown in fig. 3, the utility model provides a dynamic balance sheet, a side of the dynamic balance sheet 2 close to the axle tube 1 is provided with a plurality of salient points 21. In the specific implementation, the salient points 21 are contacted with the outer wall of the shaft tube 1 and pressurized, then the electricity is conducted for heating, the heated salient points 21 are rapidly crushed to form welding points, and the spot welding of the dynamic balance sheet 2 and the shaft tube 1 is realized. Preferably, the dynamic balance sheet 2 is arc-shaped and matched with the shape and size of the outer wall of the shaft tube 1, so that the combination area between the dynamic balance sheet and the shaft tube is greatly increased, the combination force between the dynamic balance sheet and the shaft tube is improved, and the tight connection between the dynamic balance sheet and the shaft tube is ensured. Meanwhile, the other side surface of the dynamic balance sheet 2, which is far away from the axle tube 1, is provided with a plurality of grooves 22, the grooves 22 are communicated with the salient points 21, and the width of the grooves 22 is larger than that of the salient points 21. Preferably, the cross-section of the groove 22 is circular. This arrangement can effectively reduce the thickness of the dynamic balance sheet 2 around the convex point 21. The skilled person can set the number of the grooves 22 and the bumps 21 to be the same as required, so that the two grooves correspond to each other one by one, and the adjacent two grooves 22 are not communicated with each other; it is also possible to have one recess 22 in communication with a plurality of protuberances 21.

For a high-end dynamic balancing machine, compared with the existing thin dynamic balancing piece, the dynamic balancing piece of the utility model can not only increase the quality of the dynamic balancing piece, but also fasten and weld the salient point 21 and the shaft tube 1 together through a smaller welding current, thus realizing the balance of the transmission shaft with larger initial unbalance;

compare in current thick type dynamic balance piece to low side dynamic balance machine, adopt the utility model discloses a dynamic balance piece both can lighten the quality of dynamic balance piece through the size that changes recess 22, and the welding bump is less again relatively, can effectively avoid the antitorque commentaries on classics fatigue ability of the central siphon of salient point department to reduce by a wide margin, accomplishes the production to the transmission shaft of high dynamic balance required precision.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel dynamic balance piece, its characterized in that is equipped with a plurality of bump (21) on the side of dynamic balance piece (2), it has a plurality of recess (22) to open on the another side of dynamic balance piece (2), recess (22) are linked together with bump (21), and the width is greater than the width of bump (21).

2. The novel dynamic balance sheet as claimed in claim 1, wherein the dynamic balance sheet (2) is arc-shaped and matched with the outer wall of the shaft tube (1) of the transmission shaft.

3. The novel dynamic balance tab of claim 1 wherein the cross-section of the groove (22) is circular.

4. The novel dynamic balance tab of claim 1 wherein the number of the grooves (22) and the protrusions (21) is the same, and there is a one-to-one correspondence between the two.