Polishing device for positioning end face of motor crankshaft bearing bush

Abstract

The utility model discloses a motor crankshaft bearing bush positioning end face polishing device which comprises a fixed base, the upper end face of the fixed base is provided with a polishing base in sliding connection through a linear sliding rail, the polishing base is of a rectangular frame structure, and a bearing bush positioning frame and a lifting type positioning table are fixedly arranged on the fixed base. A bearing bush containing groove is formed in the lower end face of the bearing bush locating frame, the lifting type locating table is located under the bearing bush containing groove, and the bearing bush locating end face fixed through the bearing bush locating frame and the lifting type locating table is polished in the process that the polishing column on the polishing base slides on the linear sliding rail. According to the device, the positioning end faces of the crankshaft bearing bush are ground through the multiple grinding columns which are arranged at intervals and horizontally move, on one hand, grinding scraps are conveniently discharged, on the other hand, heat dissipation of the grinding faces is facilitated, meanwhile, the two positioning end faces of the crankshaft bearing bush are ground on the same horizontal plane at the same time, and the grinding error of the positioning end faces is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a positioning end face grinding device for a motor crankshaft bearing bush, in particular to a positioning end face grinding device for a motor crankshaft bearing bush. Background Art

[0002] The bearing is the part where the sliding bearing and the journal contact. It is a semi-cylindrical surface in the shape of a tile and is very smooth. It is generally made of wear-resistant materials such as bronze and anti-friction alloy. In special cases, it can be made of wood, engineering plastics or rubber. The bearing is mainly used for the installation and use of sliding bearings. When the sliding bearing is used, a very thin oil film is required between the bearing and the shaft for lubrication. If the lubrication is poor, there will be direct friction between the bearing and the shaft, and the friction will generate very high temperature. Although the bearing is made of a special high-temperature resistant alloy material, the high temperature generated by direct friction is still enough to burn it. Therefore, in order to prevent the loss of lubricating oil due to surface roughness during the installation of the upper and lower bearings, the positioning end face of the bearing needs to be polished. However, since there are certain difficulties in fixing the crankshaft bearing, the grinding of the positioning end face will have a large error, which will affect the fixing of the crankshaft bearing. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a motor crankshaft bearing positioning end surface grinding device.

[0004] According to the technical solution provided in the embodiment of the present application, a motor crankshaft bearing positioning end face grinding device includes a fixed base, the upper end face of the fixed base is provided with a grinding seat slidably connected by a linear slide rail, the grinding seat is a rectangular frame structure, a bearing positioning frame and a lifting positioning platform are fixedly provided on the fixed base, the lower end face of the bearing positioning frame is provided with a bearing placement groove, the lifting positioning platform is located directly below the bearing placement groove, and the grinding column on the grinding seat grinds the bearing positioning end face fixed by the bearing positioning frame and the lifting positioning platform during the sliding process on the linear slide rail.

[0005] Furthermore, the grinding seat includes a rectangular frame body, and a plurality of grinding columns are evenly distributed in the middle of the upper end surface of the frame body, so that gaps are provided between the grinding columns to facilitate the discharge of grinding chips and the dissipation of temperature during grinding.

[0006] Furthermore, the bearing locating frame is an inverted U-shaped structure, and the grinding seat moves left and right with the bearing locating frame as the center, so that the grinding seat can grind the bearing on the bearing locating frame multiple times.

[0007] Furthermore, the bearing shell placement groove is an arc-shaped groove, which is convenient for the bearing shell to be placed.

[0008] Furthermore, the lifting positioning platform includes a cylinder and a positioning platform. The cylinder is fixed on a fixed base. The positioning platform is fixedly connected to the cylinder. The positioning platform is an arc-shaped structure, which is convenient for fixing and clamping the bearing shell.

[0009] Furthermore, the grinding seat is slidably connected to the linear slide rail via an electric slider, which facilitates the electric sliding of the grinding seat and improves the grinding efficiency.

[0010] To sum up, the beneficial effects of the present application are as follows: the device of the present application arranges an arc-shaped positioning table to fix the crankshaft bearing according to the structural shape of the crankshaft bearing, and grinds the positioning end face of the crankshaft bearing through a plurality of horizontally movable grinding columns arranged at intervals. On the one hand, it is convenient for the discharge of grinding chips, and on the other hand, it is convenient for the heat dissipation of the grinding surface. At the same time, the two positioning end faces of the crankshaft bearing are grinded on the same horizontal plane at the same time, thereby reducing the grinding error of its positioning end faces. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0012] Figure 1 It is a structural schematic diagram of the overall device of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the grinding seat movement of the utility model;

[0014] Figure 3 It is a schematic diagram of the connection structure of the grinding seat, the lifting positioning platform and the fixed base of the utility model.

[0015] Numbers in the figure: fixed base-1; linear slide rail-2; grinding seat-3; grinding column-31; frame body-32; bearing positioning frame-4; bearing placement groove-41; lifting positioning platform-5; cylinder-51; positioning platform-52. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] Motor crankshaft bearing positioning end surface grinding device, such as Figure 1 and Figure 2As shown, the grinding seat 3 can slide on the linear slide rail 2 provided on the upper end surface of the fixed base 1, and the grinding seat 3 can slide left and right on the fixed base 1. The grinding seat 3 includes a rectangular frame body 32 and a grinding column 31 fixed to the middle part of the upper end surface of the frame body 32;

[0019] A bearing locating frame 4 and a lifting type locating platform 5 are fixedly provided on the fixed base 1. The bearing locating frame 4 is an inverted U-shaped structure, and the linear guide rail 2 is located between two vertical columns of the bearing locating frame 4. A bearing placement groove 41 is provided on the lower end surface of the bearing locating frame 4, and the lifting type locating platform 5 is located directly below the bearing placement groove 41.

[0020] like Figure 3 As shown, the cylinder 51 on the lifting positioning platform 5 is fixed on the fixed base 1 in the rectangular frame body 32, and the upper end surface of the cylinder 51 is fixedly connected to the arc-shaped positioning platform 52. The positioning platform 52 is lifted into the bearing placement groove 41 by the cylinder 51, and clamps the fixed bearing together with the inner end surface of the bearing placement groove 41.

[0021] Before use, slide the grinding seat 3 to Figure 1 The positioning platform 52 on the lifting positioning platform 5 is lowered by the cylinder 51 so that the positioning platform 52 is placed on the frame body 31 of the grinding seat 3. The bearing to be ground is placed on the positioning platform 52. The cylinder 51 is then started so that the positioning platform 52 is raised along with the cylinder 51 to the bearing placement groove 41 so that the bearing is fixed. At this time, the electric slider on the linear guide rail 2 is started so that the grinding seat 3 is Figure 2 As shown, the grinding column 31 moves toward the left end of the fixed base 1, so that the grinding column 31 grinds the lower end surface of the bearing in the bearing placement groove 41 (when the bearing is placed in the bearing placement groove 41, the bearing is an arc shape with an opening placed downward, and at this time, both end surfaces of the bearing positioning are facing downward), that is, the bearing positioning end surface is polished, and then the grinding seat 3 is moved to the position as shown in the figure through the linear slide rail 2. Figure 1 As shown in the position, at this time, the positioning platform 52 is lowered by the cylinder 51, the grinding of the positioning end face of the bearing shell is completed, the bearing shell can be taken out, and then the grinding of the positioning end face of the next bearing shell can be carried out.

[0022] The above description is only an explanation of the preferred embodiments of the present application and the technical principles and other schemes used. At the same time, the scope of the invention involved in the present application is not limited to the technical scheme formed by a specific combination of the above technical features, but also should cover other technical schemes formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical scheme.

Claims

1. A motor crankshaft bearing positioning end surface grinding device, comprising a fixed base (1), characterized in that: The upper end surface of the fixed base (1) is provided with a grinding seat (3) slidably connected via a linear slide rail (2); the grinding seat (3) is a rectangular frame structure; a bearing locating frame (4) and a lifting type positioning platform (5) are fixedly provided on the fixed base (1); a bearing placement groove (41) is provided on the lower end surface of the bearing locating frame (4); the lifting type positioning platform (5) is located directly below the bearing placement groove (41); During the sliding process of the grinding column (31) on the grinding seat (3) on the linear slide rail (2), the grinding column (31) grinds the bearing bush positioning end surface fixed by the bearing bush positioning frame (4) and the lifting positioning platform (5).

2. The motor crankshaft bearing positioning end surface grinding device according to claim 1 is characterized in that: The grinding seat (3) comprises a rectangular frame body (32), and a plurality of grinding columns (31) are evenly distributed in the middle of the upper end surface of the frame body (32).

3. The motor crankshaft bearing positioning end surface grinding device according to claim 1 is characterized in that: The bearing bush positioning frame (4) is an inverted U-shaped structure, and the grinding seat (3) moves left and right with the bearing bush positioning frame (4) as the center.

4. The motor crankshaft bearing positioning end surface grinding device according to claim 3 is characterized in that: The bearing bush placement groove (41) is an arc-shaped groove.

5. The motor crankshaft bearing positioning end surface grinding device according to claim 4 is characterized in that: The lifting type positioning platform (5) comprises a cylinder (51) and a positioning platform (52); the cylinder (51) is fixed on the fixed base (1); the positioning platform (52) is fixedly connected to the cylinder (51); and the positioning platform (52) is an arc-shaped structure.

6. The motor crankshaft bearing positioning end surface grinding device according to claim 1, characterized in that: The grinding seat (3) is slidably connected to the linear slide rail (2) via an electric slide block.

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