CN216729901U

CN216729901U - Grinding device for offset gear

Info

Publication number: CN216729901U
Application number: CN202123421234.8U
Authority: CN
Inventors: 王俊峰; 王永莉
Original assignee: Anhui Fenghai Crane Equipment Manufacturing Co ltd
Current assignee: Anhui Fenghai Crane Equipment Manufacturing Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-06-14
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a grinding device for an offset gear, wherein the offset gear comprises a main gear and a secondary gear, the grinding device comprises a bracket for meshing and fixing the main gear and the secondary gear, and the bracket consists of a rotating shaft for fixing the secondary gear and a moving shaft for fixing the main gear; the pinion is arranged on the rotating shaft and performs autorotation motion; the main gear is arranged at one end of the movable shaft close to the pinion and is driven by the movable shaft to move along the axial direction of the movable shaft. The utility model has simple structure and convenient operation, can make up the problem of low precision of the gear in the production by adjusting the gear matching degree by grinding, ensures that the common gear can also reach the high precision standard, greatly reduces the manufacturing cost and meets various application requirements.

Description

Grinding device for offset gear

Technical Field

The utility model relates to the technical field of gear machining, in particular to a grinding device for an offset gear.

Background

Gear transmission is the most typical meshing transmission, and is also one of the most widely used transmission forms. The rotation of the gears requires that the contacted gears have equal modulus and equal tooth angles, so that the machining precision of the gears is higher. In the gear transmission, the meshing deviation not only can cause the phenomena of vibration, noise and abrasion damage during the gear operation, but also can cause the problems of tooth breakage, bearing damage and the like caused by uneven stress, and finally causes mechanical failure and potential safety hazard. In some precision instruments, gears of typical meshing accuracy are simply not available.

At present, the most extensive gear processing technology is limited by the precision of a die, the meshing degree between gears with different specifications can not meet the high requirement standard in the industry, and most gear transmission structures such as offset gears depend on imports. Although a mode that part of gears are ground to improve the precision exists, on one hand, the existing grinding only aims at a single gear, the gear is ground with a special frosted gear, the frosted gear is worn and needs to be replaced periodically, the cost is high, and the machining precision of the gear is still influenced due to the abrasion; on the other hand, the existing grinding can not solve the meshing requirement of the offset gear type gear, and the problem of how to improve the contact ratio of the offset gear is to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides an offset gear grinding device.

The utility model adopts the following technical scheme:

an offset gear grinding device comprises a main gear and a pinion, and the grinding device comprises a bracket for meshing and fixing the main gear and the pinion, wherein the bracket consists of a rotating shaft for fixing the pinion and a moving shaft for fixing the main gear; the auxiliary gear is arranged on the rotating shaft and performs autorotation motion; the main gear is arranged at one end of the movable shaft close to the pinion and is driven by the movable shaft to move along the axial direction of the movable shaft.

Preferably, the main gear and the moving shaft are coaxially arranged, and a sliding bearing is arranged between the main gear and the moving shaft, so that the main gear can rotate around the moving shaft.

Preferably, the moving shaft is an electric push rod.

Preferably, the movable shaft is connected with an electric adjusting device for adjusting the speed and the thrust of the movable shaft moving along the axis direction of the movable shaft.

Preferably, the pinion and the rotating shaft are coaxially arranged, and a steering member and a sliding bearing are arranged between the pinion and the rotating shaft, so that the pinion can rotate around the rotating shaft under the driving of the steering member.

Preferably, the pinion and the rotating shaft are coaxially arranged, the relative position between the pinion and the rotating shaft is fixed, the rotating shaft is a rotating shaft, and the rotating shaft drives the pinion to rotate.

The utility model has the advantages that:

in the case of a high-precision offset gear, since the fit between tooth surfaces is high, the friction force increased by grinding damages both the contact surfaces of the two gears. However, for gears with low machining accuracy, the degree of fit of the gears can be adjusted by utilizing friction during rotation, and the friction firstly improves the non-fit position between the two gears. The utility model utilizes the principle to grind so as to improve the meshing of the gears.

The gear to be ground is fixed through the movable shaft and the rotating shaft, the pressure between the two gears to be ground is increased by the movable shaft so as to increase friction, and the contact position of the gear can be ground through grinding at a certain speed for a certain time, so that the degree of fit between the gears is improved.

In order to improve the friction, the utility model can also coat the grinding paste on the tooth surfaces of the two gears during working, adjust the smoothness after grinding, improve the grinding effect and shorten the grinding time.

The utility model has simple structure and convenient operation, can make up the problem of low precision of the gear in the production by adjusting the gear matching degree by grinding, ensures that the common gear can also reach the high precision standard, greatly reduces the manufacturing cost and meets various application requirements.

Drawings

FIG. 1 is a schematic cross-sectional view of a polishing apparatus according to the present invention.

The notations in the figures have the following meanings:

11-main gear 12-pinion

21-moving shaft 211-electric adjusting device 22-rotating shaft 221-steering member

30-plain bearing

Detailed Description

As shown in fig. 1, the offset gear includes a main gear 11 and a sub-gear 12, and the grinding device includes a bracket for fixing the main gear 11 and the sub-gear 12 in mesh, the bracket being composed of a rotating shaft 22 for fixing the sub-gear 12 and a moving shaft 21 for fixing the main gear 11.

The pinion 12 and the rotating shaft 22 are coaxially arranged, and the pinion 12 is arranged on the rotating shaft 22 to perform self-rotation movement.

The rotation motion can be realized in various ways, one of them is that a steering member 221 and a sliding bearing 30 are arranged between the pinion 12 and the rotating shaft 22, and the pinion 12 rotates around the rotating shaft 22 under the driving of the steering member 221. The sliding bearing 30 is used to reduce friction between the pinion 12 and the rotating shaft 22, and the specific arrangement form of the sliding bearing 30 is not limited in this embodiment, and any steering member 221 that can generate a rotation motion that meets the requirement of the pinion 12 may be used, and this embodiment is not particularly limited. Or the relative position between the pinion 12 and the rotating shaft 22 is fixed, the rotating shaft 22 is connected with a power device to form a rotating shaft, and the rotating shaft 22 drives the pinion 12 to rotate.

The main gear 11 is disposed at one end of the moving shaft 21 close to the sub-gear 12, the main gear 11 is disposed coaxially with the moving shaft 21, and the sliding bearing 30 is disposed between the main gear 11 and the moving shaft 21 so that the main gear 11 can rotate around the moving shaft 21.

Meanwhile, the moving shaft 21 drives the main gear 11 to move along the axial direction of the moving shaft 21. The moving shaft 21 is connected with an electric adjusting device 211, or the moving shaft is arranged as an electric push rod, which can control the speed and thrust of the moving shaft 21 along the axial direction.

The working principle of the utility model is as follows:

the pinion 12 rotates on the rotating shaft 22, the main gear 11 is meshed with the pinion 12 under the pushing of the moving shaft 21, and the main gear 11 is driven by the pinion 12 to rotate around the moving shaft 21. Due to the meshing defect between the main gear 11 and the pinion gear 12, the portions where they do not match generate friction due to rotation. During grinding, a layer of grinding paste is coated on the meshing part of the main gear 11 and the pinion 12, meanwhile, the main gear 11 is pushed by the moving shaft 21 to press the pinion 12 to enhance the friction effect, the main gear and the pinion roll relatively under the driving of the grinding device, and unmatched parts are gradually polished mutually and smoothly until high meshing degree is achieved. During the grinding process, the grinding degree of the contact surface of the main gear 11 and the secondary gear 12 can be detected by using Sudan, and when the matching degree of the main gear 11 and the secondary gear 12 reaches more than 80%, the grinding is judged to be finished.

The utility model is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the appended claims.

Claims

1. An offset gear grinding device, the offset gear comprises a main gear (11) and a pinion (12), characterized in that, the grinding device comprises a bracket for meshing and fixing the main gear (11) and the pinion (12), the bracket is composed of a rotating shaft (22) for fixing the pinion (12) and a moving shaft (21) for fixing the main gear (11); the pinion (12) is arranged on the rotating shaft (22) and performs autorotation motion; the main gear (11) and the movable shaft (21) are coaxially arranged, and the movable shaft (21) drives the main gear to move along the axis direction of the movable shaft (21).

2. An offset gear grinding apparatus according to claim 1, wherein the main gear (11) is arranged at an end of the movable shaft (21) adjacent to the pinion (12), and a sliding bearing (30) is arranged between the main gear (11) and the movable shaft (21) to allow the main gear (11) to rotate about the movable shaft (21).

3. An offset gear grinding apparatus according to claim 2, wherein the moving shaft (21) is an electric push rod.

4. An offset gear grinding apparatus as claimed in claim 3, wherein an electrically operated adjustment means (211) is connected to the movable shaft (21) for adjusting the speed and thrust of the movement of the movable shaft (21) in the direction of its axis.

5. An offset gear grinding apparatus according to claim 1, wherein the pinion (12) is coaxially provided with the rotary shaft (22), and a turning member (221) and a sliding bearing (30) are provided between the pinion (12) and the rotary shaft (22) so that the pinion (12) is rotated about the rotary shaft (22) by the turning member (221).

6. An offset gear grinding apparatus as claimed in claim 1, wherein said pinion (12) is coaxially disposed with respect to said shaft (22), said pinion (12) and said shaft (22) are fixed with respect to each other, said shaft (22) is a rotation shaft, and said shaft (22) drives said pinion (12) to rotate.