CN210265558U

CN210265558U - Novel axle tooth assembly structure

Info

Publication number: CN210265558U
Application number: CN201920767971.7U
Authority: CN
Inventors: 王男; 杨阳; 柯志宏; 赵雪松; 付超
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-04-07
Anticipated expiration: 2029-05-27

Abstract

The utility model provides a novel axle tooth assembly structure, it includes that three keep off gear and odd number keep off the input shaft, the axial surface structure divide into two parts in the three keep off gear, some is opened there is the spline, another part is the plain noodles, the odd number keeps off the spline that has the axial surface matching in the three keep off gear on the input shaft, three keep off the gear pressure equipment to the odd number keep off on the input shaft, keep off the input shaft with the odd number and pass through spline e and be connected the combination with optical axis f interference and fix, three keep off the gear processing benchmark and keep off input shaft both ends axle journal reference surface A and B for the odd number. The beneficial effects of the utility model are that, three keep off the gear and keep off the input shaft with the odd number and pass through splined connection and optical axis interference connection combination fixed, install simply and the precision is high. Through the structure, the gear grinding reference of the three-gear is converted into the shaft necks at the two ends of the input shaft with odd gears, so that the machining and the detection of the three-gear are consistent with the use reference, the gear precision loss caused by inconsistent reference and secondary installation is avoided, the process difficulty for achieving high-precision quality of the gear is reduced, and the machining cost is reduced.

Description

Novel axle tooth assembly structure

Technical Field

The utility model relates to a novel axle tooth assembly structure belongs to automobile manufacturing's automotive transmission technical field.

Background

In a double-clutch transmission shafting, at least two driving gears are arranged on an odd-gear input shaft, two pairs of gears participate in work together, and a single-gear is designed to be arranged on the odd-gear input shaft with the gears in consideration of the spatial layout of a double-gear structure and the high difficulty of part process, so that the precision loss of the single-gear is easily caused due to secondary installation. In order to ensure good NVH performance of the transmission, the requirement on the machining quality of the gear is high, and cost and process difficulty are improved for the structure.

The utility model discloses a to two separation and reunion derailleur designs a novel axle tooth assembly structure, can guarantee the processingquality of gear, satisfy the NVH requirement of derailleur, can realize again that parts machining is simple, the lower target of cost.

Disclosure of Invention

To the above problem, the utility model provides a novel two separation and reunion derailleur axle tooth assembly structure that reduce derailleur three keep off gear squeaking noise, the technical scheme of the utility model as follows

A novel axle tooth assembly structure, it includes three keeps off gear and odd number fender input shaft, characterized in that: the three-gear is characterized in that the inner hole surface structure is divided into two parts, one part is a spline, the other part is a smooth surface, the odd-number gear input shaft is provided with a spline e and an optical axis f which are matched with the inner hole surface of the three-gear, the three-gear is pressed on the odd-number gear input shaft and is connected with the odd-number gear input shaft through the spline e and is in interference fit connection with the optical axis f for combination and fixation, and the three-gear machining reference is the axle neck reference surfaces A and B at the two ends of the odd-number gear input shaft.

The beneficial effects of the utility model are that, three keep off the gear and keep off the input shaft with the odd number and pass through splined connection and optical axis interference connection combination fixed, install simply and the precision is high. The gear grinding reference of the three-gear is originally the small diameter of the internal spline, the process difficulty of the gear for realizing high precision quality is high, the gear grinding reference of the three-gear is converted into the shaft necks at two ends of the input shaft with odd gears through the structure, so that the three-gear is processed and detected to be consistent with the use reference, the gear precision loss caused by inconsistent reference and secondary installation is avoided, the process difficulty for achieving high precision quality of the gear is reduced, and the processing cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the structure of an odd-numbered gear input shaft

Fig. 3 is a structural schematic diagram of a part of the three-gear.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 3, a novel shaft-gear assembly structure includes a three-gear 2 and an odd-gear input shaft 1, and is characterized in that: the structure of the inner hole surface of the three-gear 2 is divided into two parts, one part is a spline, the other part is a smooth surface, the odd-number gear input shaft 1 is provided with a spline e and an optical axis f which are matched with the inner hole surface of the three-gear 2, the three-gear 2 is pressed on the odd-number gear input shaft 1 and is fixedly connected with the odd-number gear input shaft 1 through the spline e and the optical axis f in an interference connection combination, and the three-gear 2 is processed based on the journal reference surfaces A and B at the two ends of the odd-number gear input shaft 1.

In specific implementation, as shown in fig. 1, after the odd-numbered gear input shaft 1 is positioned on a machine tool through an AB standard to complete all processes before shot blasting, and after the three-numbered gear 2 completes heat treatment and other processes except tooth grinding after heat treatment through a CD standard, the three-numbered gear 2 is pressed on the odd-numbered gear input shaft 1, and is fixedly combined with the odd-numbered gear input shaft 1 through a spline connection e and an optical axis interference connection f, then the odd-numbered gear input shaft and the three-numbered gear assembly are positioned on the machine tool through the AB standard to perform tooth grinding on the three-numbered gear input shaft 2, and finally shot blasting and final product inspection are performed on the whole assembly.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A novel axle tooth assembly structure, it includes three keeps off gear (2) and odd number fender input shaft (1), characterized in that: the inner hole surface structure of the three-gear (2) is divided into two parts, one part is a spline, the other part is a smooth surface, the odd-number gear input shaft (1) is provided with a spline e and an optical axis f which are matched with the inner shaft surface of the three-gear (2), the three-gear (2) is pressed on the odd-number gear input shaft (1) and is connected with the odd-number gear input shaft (1) through the spline e and is fixedly combined with the optical axis f in an interference fit mode, and the three-gear (2) is processed on the basis of the axle neck reference surfaces A and B at the two ends of the odd-number gear input shaft (1).