CN212407491U

CN212407491U - Automobile gear

Info

Publication number: CN212407491U
Application number: CN202022025596.4U
Authority: CN
Inventors: 王培郁; 柯韦圣
Original assignee: Zhuhai Junxing Electromechanical Co ltd
Current assignee: Zhuhai Junxing Electromechanical Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-01-26
Anticipated expiration: 2030-09-16

Abstract

The utility model relates to an automobile gear, including the gear body, the gear body has the nanometer metal level of connecting an organic whole at the meshing flank of tooth at least, the particle diameter of the nanometer metal that nanometer metal level contained is 10 mu m-15 mu m. Therefore, the gear has extremely high wear resistance and high fatigue resistance, so that the service life of the gear surface is greatly prolonged; and the hydrophilicity of the tooth surface of the gear body is improved through the pits on the surface of the nano metal layer, and the higher oil content of the gear in the gear box is improved, so that the sliding performance of the tooth surface of the gear is enhanced. In addition, the carburized hardened layer on the tooth surface and the core layer of the gear form a second impact-resistant layer of the gear together, so that the service life strength of the gear is further improved.

Description

Automobile gear

Technical Field

The utility model belongs to the technical field of the car, in particular to automobile gear.

Background

Automobiles (including new energy automobiles) are currently the most common means of travel, and include a large number of gears inside. However, the applicant found that: the tooth surfaces of the existing automobile gears in the current market are not high in wear resistance and fatigue resistance, easy to wear and short in service life, so that the running performance of the automobile is influenced. Moreover, the applicant also found that the teeth surfaces of the existing automobile gears are poor in hydrophilicity, so that the oil content in the gear box is low, the sliding property is poor, and the abrasion is easier.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that exists among the prior art, the utility model provides a have high wear resistance, have higher fatigue resistance strong to prolonged the automobile gear of the life of the gear flank of tooth greatly, can improve the hydrophilicity of the gear flank of tooth through the pit on nanometer metal level surface moreover, improved the gear and had higher oil content in the gear box, thereby strengthened the sliding property of gear flank of tooth.

In order to solve the technical problem, the utility model adopts the following technical scheme:

an automobile gear comprises a gear body, wherein the gear body is provided with a nano metal layer which is integrally connected at least on a meshing tooth surface, and the nano metal contained in the nano metal layer has the particle size of 10-15 microns.

Further, the nano metal layer is a hardened layer which is hit on the meshing tooth surface of the gear body by nano metal beads.

Further, the surface of the nano metal layer is provided with uniformly distributed pits, and the diameter of each pit is 10-30 μm.

Further, the thickness of nanometer metal level is 5 ~ 20 um.

Furthermore, the gear body is at least provided with a carburization hardened layer which is connected into a whole on the tooth surface of the meshing tooth, and the carburization hardened layer is positioned on the inner side of the nano metal layer and is connected with the nano metal layer into a whole.

Further, the thickness of carburization sclerosis layer is 0.3 ~ 0.5mm, the thickness of nanometer metal level (2) is 5 ~ 20 um.

The utility model discloses mainly have following beneficial effect:

1. the utility model discloses a set up the nanometer metal level at the flank of tooth of gear body and can have high wear resistance, have higher fatigue resistance reinforce to the life of the flank of tooth of gear has been prolonged greatly.

2. The hydrophilicity of the tooth surface of the gear body can be improved through the pits on the surface of the nano metal layer, and the oil content of the gear in the gear box is improved, so that the sliding performance of the tooth surface of the gear is enhanced.

3. The second impact-resistant layer of the gear is formed by the carburized hardened layer and the core layer of the gear, so that the service life strength of the gear is further improved.

Drawings

Fig. 1 is a partial schematic structural view of an embodiment of an automotive gear according to the present invention;

fig. 2 is a schematic view of a partial cross-sectional structure of an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 and fig. 2, an automobile gear according to an embodiment of the present invention includes a gear body 1, wherein a meshing tooth surface of the gear body 1 has a nano metal layer 2 integrally connected, and a nano metal contained in the nano metal layer 2 has a particle size of 10 μm to 15 μm; wherein, nanometer metal level 2 can be hit the sclerosis layer at the engaging tooth face of gear body 1 by the nanometer metal pearl, and its thickness is 5 ~ 20um best, and it can reach the compressive residual stress more than-1000 Mpa, has high wear-resisting characteristic, has higher fatigue resistance strong to gear body 1's engaging tooth face's life has been prolonged greatly.

Secondly, the surface of the nano metal layer 2 has uniformly distributed pits (not shown in the figure), and the diameter of the pits is 10 μm-30 μm. Therefore, the hydrophilicity of the meshing tooth surface of the gear body 1 can be improved through the pits, the oil content of the gear in the gear box is improved, and the sliding performance of the meshing tooth surface of the gear is enhanced.

As shown in fig. 2, the engaging tooth surface of the gear body 1 of the embodiment of the present invention further has a carburization hardened layer 3 integrally connected, and the carburization hardened layer 3 is formed by carburizing heat treatment, is located inside the nano metal layer 2, and is integrally connected with the nano metal layer 2; wherein, the thickness of the carburized hardened layer 3 is 0.3-0.5 mm. Thus, the carburized hardened layer 3 and the core layer 4 of the gear body 1 together form a second impact-resistant layer of the gear, and the life strength of the gear 1 is further improved.

Of course, the embodiment of the utility model provides an automobile gear except can have nanometer metal level 2 or nanometer metal level 2 and carburization sclerosis layer 3 at the engaging tooth face of gear body 1, can also have nanometer metal level 2 or nanometer metal level 2 and carburization sclerosis layer 3 at other flank of tooth simultaneously.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.

Claims

1. The automobile gear is characterized by comprising a gear body (1), wherein the gear body (1) is provided with a nano metal layer (2) which is integrally connected at least on a meshing tooth surface, and the nano metal contained in the nano metal layer (2) has the particle size of 10-15 mu m.

2. The automotive gear according to claim 1, characterized in that the nanometal layer (2) is a hardened layer hit on the meshing tooth surface of the gear body (1) by nanometal beads.

3. Automotive gear according to claim 1 or 2, characterised in that the surface of the nanometal layer (2) has a uniform distribution of pits with a diameter of 10-30 μm.

4. The automotive gear according to claim 1 or 2, characterized in that the thickness of the nanometal layer (2) is 5-20 um.

5. The automotive gear according to claim 1 or 2, characterized in that the gear body (1) further has an integrally connected carburized hardened layer (3) at least at the tooth surfaces of meshing, and the carburized hardened layer (3) is located inside the nanometal layer (2) and integrally connected to the nanometal layer (2).

6. The automobile gear according to claim 5, wherein the carburized hardened layer (3) has a thickness of 0.3 to 0.5mm, and the nanometal layer (2) has a thickness of 5 to 20 μm.