Bearing press-fitting device

Abstract

The utility model discloses bearing press -fitting device, including bottom plate, bottom plate center is equipped with fixed seat, and the fixed seat is threadedly connected with the axle fixed cover, is equipped with the support on the bottom plate, is equipped with the push rod spare on the crossbeam of support, and the lower extreme of push rod spare is threadedly connected with bearing fixing spare, and bearing fixing spare is coaxial with axle fixed cover and sets up, and the one side of fixed seat on the bottom plate is equipped with vertical rod, and the upper portion of vertical rod is threadedly connected with the adjusting sleeve, and the outer wall of adjusting sleeve is rotatably connected with horizontal calibration board. The utility model has the beneficial effects that: axle fixed is inserted in axle fixed cover, then rotates horizontal calibration board and moves to the top of axle, and then adjusts the height of horizontal calibration board through adjusting sleeve and makes it contact with the upper end of axle, and the contact surface of both is observed, and the upper end level of axle is calibrated through horizontal calibration board, and then guarantees that it is coaxial with the bearing in bearing fixing spare, guarantees the press -fitting quality.

Description

Technical Field

[0001] This utility model relates to the field of bearing assembly technology, and in particular to bearing press-fitting device. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during movement, and ensure rotational accuracy. Because bearings and shafts have an interference fit, installation is quite difficult. Currently, common installation methods include heating and pressing. Heating, based on the principle of thermal expansion and contraction, is generally suitable for fits with large interference fits but not for small-batch production and processing. For fits with moderate interference fits, pressing is generally used, where the bearing is pressed onto the shaft using a pressing tool. However, because shafts are often long, existing pressing tools often fail to ensure coaxial alignment, leading to misalignment and potential workpiece damage. Utility Model Content

[0003] The purpose of this invention is to provide a bearing press-fitting device to solve the problem that existing press-fitting tools are difficult to ensure coaxial alignment during use.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] The bearing press-fitting device includes a base plate, a fixed seat at the center of the base plate, a shaft fixing sleeve threadedly connected to the fixed seat, a bracket on the base plate, a push rod on the crossbeam of the bracket, a bearing fixing component threadedly connected to the lower end of the push rod, the bearing fixing component and the shaft fixing sleeve being coaxially arranged, a vertical rod on one side of the base plate located at the fixed seat, an adjusting sleeve threadedly connected to the upper part of the vertical rod, and a horizontal calibration plate rotatably connected to the outer wall of the adjusting sleeve.

[0006] Furthermore, one end of the shaft fixing sleeve is provided with a shaft fixing groove, and the other end of the shaft fixing sleeve is provided with a first connecting threaded sleeve that adapts to the fixing seat. The inner wall of the shaft fixing groove is embedded with elastic steel balls.

[0007] Furthermore, the length of the first connecting threaded sleeve is less than the depth of the threaded hole of the fixing seat.

[0008] Furthermore, the lower end of the push rod is provided with a threaded connection seat, one end of the bearing fixing member is provided with a second connecting threaded sleeve adapted to the threaded connection seat, the other end of the bearing fixing member is provided with a bearing fixing groove, the inner wall of the bearing fixing groove is embedded with elastic steel balls, and the bottom of the bearing fixing groove is provided with a shaft through hole that connects to the inner cavity of the second connecting threaded sleeve.

[0009] Furthermore, the length of the second connecting threaded sleeve is less than the depth of the threaded hole of the threaded connector.

[0010] Furthermore, the lower end of the horizontal calibration plate is provided with a diagonal brace, and the other end of the diagonal brace is provided with a sliding sleeve, which is movably fitted onto the vertical rod.

[0011] Furthermore, a magnetic block is provided at the end of the horizontal calibration plate away from the adjustment sleeve, and a notch is provided on the vertical arm of the bracket, with a magnetic plate adapted to the magnetic block on the notch.

[0012] Furthermore, an L-shaped rubber sleeve is fitted onto the bearing retainer, with the lower inner diameter of the rubber sleeve being smaller than the inner diameter of the bearing retaining groove.

[0013] This utility model has the following advantages:

[0014] The shaft is fixedly inserted into the shaft fixing sleeve. Then, the horizontal calibration plate is rotated and moved above the shaft. Subsequently, the height of the horizontal calibration plate is adjusted by adjusting the sleeve so that it contacts the upper end of the shaft. By observing the contact surface between the two, the upper end of the shaft is calibrated to be horizontal by the horizontal calibration plate, thereby ensuring that it is coaxial with the bearing in the bearing fixing component and ensuring the pressing quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram, 1-base plate, 2-fixed seat, 3-shaft fixing sleeve, 4-bracket, 5-push rod, 6-bearing fixing component, 7-vertical rod, 8-adjusting sleeve, 9-horizontal calibration plate, 10-shaft fixing groove, 11-first connecting threaded sleeve, 12-elastic steel ball, 121-steel ball, 122-connecting block, 123-spring, 124-threaded connecting seat, 13-threaded connecting seat, 14-second connecting threaded sleeve, 15-bearing fixing groove, 16-shaft through hole, 17-diagonal brace, 18-sliding sleeve, 19-magnetic block, 20-magnetic plate, 21-rubber sleeve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0020] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] refer to Figure 1 As shown in Figure 2, one embodiment of this utility model is as follows:

[0025] The bearing press-fitting device includes a base plate 1, a fixed seat 2 at the center of the base plate 1, a shaft fixing sleeve 3 threadedly connected to the fixed seat 2, a bracket 4 on the base plate 1, a push rod 5 on the crossbeam of the bracket 4, a bearing fixing member 6 threadedly connected to the lower end of the push rod 5, the bearing fixing member 6 being coaxially arranged with the shaft fixing sleeve 3, a vertical rod 7 on one side of the fixed seat 2 on the base plate 1, an adjusting sleeve 8 threadedly connected to the upper part of the vertical rod 7, and a horizontal calibration plate 9 rotatably connected to the outer wall of the adjusting sleeve 8.

[0026] Because the shaft is quite long, the shaft fixing sleeve 3 can only fix the lower part of the shaft. Even a slight tilt during fixing can make it difficult for the upper end of the shaft to be coaxial with the bearing, and it's difficult to visually determine if the shaft is level. Therefore, in this embodiment, the shaft to be installed is fixedly inserted into the shaft fixing sleeve 3, and then the horizontal calibration plate 9 is rotated and moved above the shaft. The height of the horizontal calibration plate 9 is then adjusted by the adjusting sleeve 8 to make it contact the upper end of the shaft. By observing the contact surfaces, if there is partial contact, meaning there is an angle between the horizontal calibration plate 9 and the upper end face of the shaft, it indicates that the shaft is not vertically fixed. The shaft is then re-inserted or adjusted until the upper end of the shaft is completely in contact with the horizontal calibration plate 9, ensuring the upper end of the shaft is level and thus ensuring coaxiality with the bearing in the bearing fixing component 6. Then, the push rod 5 moves the bearing downwards, pressing the bearing onto the shaft to ensure pressing quality.

[0027] One end of the shaft fixing sleeve 3 is provided with a shaft fixing groove 10, and the other end of the shaft fixing sleeve 3 is provided with a first connecting screw sleeve 11 that is adapted to the fixing seat 2. The inner wall of the shaft fixing groove 10 is embedded with elastic steel balls 12.

[0028] The lower end of the push rod 5 is provided with a threaded connection seat 13. One end of the bearing fixing part 6 is provided with a second connecting threaded sleeve 14 adapted to the threaded connection seat. The other end of the bearing fixing part 6 is provided with a bearing fixing groove 15. The inner wall of the bearing fixing groove 15 is embedded with an elastic steel ball 12. The bottom of the bearing fixing groove 15 is provided with a shaft through hole 16 that connects to the inner cavity of the second connecting threaded sleeve 14.

[0029] The shaft fixing sleeve 3 is threadedly connected to the fixing seat 2, and the bearing fixing part 6 is threadedly connected to the threaded connection seat 13, so as to facilitate the replacement of the shaft fixing sleeve and bearing fixing part of the corresponding specifications according to the installed shaft and bearing, and the operation is simple and convenient.

[0030] like Figure 1 As shown, the threaded connector 13 has a groove structure to accommodate the movement of the shaft. During the press-fitting process, the upper end of the shaft passes through the shaft through hole 16 and can enter the groove structure of the threaded connector.

[0031] The elastic steel balls 12 are arranged in the same way in the shaft fixing groove 10 and the bearing fixing groove 15. For example... Figure 2 As shown, the elastic steel ball 12 includes a steel ball 121, and a connecting block 122, a spring 123, and a threaded connecting seat 124 are arranged sequentially at its rear end.

[0032] The push rod 5 can be a cylinder or a lead screw assembly to drive the movement of the bearing fixing component. Those skilled in the art can set it according to actual needs. Cylinders and lead screw assemblies are both existing technologies and will not be described in detail here.

[0033] The length of the first connecting threaded sleeve 11 is less than the depth of the threaded hole in the fixing seat 2; the length of the second connecting threaded sleeve 14 is less than the depth of the threaded hole in the threaded connecting seat 13. This ensures that the bearing fixing member 6 and the shaft fixing sleeve 3 are coaxially arranged.

[0034] The lower end of the horizontal calibration plate 9 is provided with a diagonal brace 17, and the other end of the diagonal brace 17 is provided with a sliding sleeve 18, which is movably fitted onto the vertical rod 7.

[0035] The diagonal brace 17 is installed to ensure the levelness of the horizontal calibration plate 9. For example... Figure 1 As shown, the upper part of the vertical rod 7 is threaded, and the lower part is a smooth rod. The lower end of the vertical rod 7 is threaded to the base plate to facilitate equipment assembly.

[0036] A magnetic block 19 is provided at the end of the horizontal calibration plate 9 away from the adjustment sleeve 8, and a notch is provided on the vertical arm of the bracket 4, and a magnetic plate 20 adapted to the magnetic block 19 is provided on the notch.

[0037] During pressing, the horizontal calibration plate 9 can be rotated to magnetically fix the magnetic block 19 to the magnetic suction plate 20, thus avoiding affecting the pressing operation.

[0038] A rubber sleeve 21 with an L-shaped cross-section is fitted onto the bearing fixing component 6. The inner diameter of the lower end of the rubber sleeve 21 is smaller than the inner diameter of the bearing fixing groove 15.

[0039] The rubber sleeve 21 effectively prevents the bearing from falling off after it is installed.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bearing press-fitting device, characterized in that: The device includes a base plate, a fixed seat at the center of the base plate, a shaft fixing sleeve threadedly connected to the fixed seat, a bracket on the base plate, a push rod on the crossbeam of the bracket, a bearing fixing component threadedly connected to the lower end of the push rod, the bearing fixing component being coaxially arranged with the shaft fixing sleeve, a vertical rod on one side of the base plate located at the fixed seat, an adjusting sleeve threadedly connected to the upper part of the vertical rod, and a horizontal calibration plate rotatably connected to the outer wall of the adjusting sleeve.

2. The bearing press-fitting device according to claim 1, characterized in that: One end of the shaft fixing sleeve is provided with a shaft fixing groove, and the other end of the shaft fixing sleeve is provided with a first connecting screw sleeve adapted to the fixing seat. The inner wall of the shaft fixing groove is embedded with elastic steel balls.

3. The bearing press-fitting device according to claim 2, characterized in that: The length of the first connecting threaded sleeve is less than the depth of the threaded hole of the fixing seat.

4. The bearing press-fitting device according to claim 1, characterized in that: The lower end of the push rod is provided with a threaded connection seat, one end of the bearing fixing member is provided with a second connecting thread sleeve adapted to the threaded connection seat, the other end of the bearing fixing member is provided with a bearing fixing groove, the inner wall of the bearing fixing groove is embedded with an elastic steel ball, and the bottom of the bearing fixing groove is provided with a shaft through hole communicating with the inner cavity of the second connecting thread sleeve.

5. The bearing press-fitting device according to claim 4, characterized in that: The length of the second connecting sleeve is less than the depth of the threaded hole of the threaded connector.

6. The bearing press-fitting device according to claim 1, characterized in that: The lower end of the horizontal calibration plate is provided with a diagonal brace, and the other end of the diagonal brace is provided with a sliding sleeve, which is movably fitted onto the vertical rod.

7. The bearing press-fitting device according to claim 1, characterized in that: The horizontal calibration plate has a magnetic block at one end away from the adjustment sleeve, and a notch is provided on the vertical arm of the bracket, with a magnetic plate adapted to the magnetic block on the notch.

8. The bearing press-fitting device according to claim 4, characterized in that: The bearing fixing component is fitted with an L-shaped rubber sleeve, the lower inner diameter of which is smaller than the inner diameter of the bearing fixing groove.

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