Main shaft aligning mechanism with fixable swing angle

Abstract

The utility model discloses a spindle aligning mechanism with a fixable swing angle, which comprises a base, a transmission shaft, a deep groove ball bearing, a bearing bush, a bearing connecting piece, a joint bearing, a bearing end cover, an angle adjusting piece, a stop washer, a stop nut and an angle fixing piece, the transmission shaft is sequentially sleeved with the deep groove ball bearing, the bearing bush and the bearing connecting piece, the knuckle bearing is installed in the base, a plurality of arc-shaped grooves distributed around the shaft are formed in the angle adjusting piece, and the angle adjusting piece penetrates through the arc-shaped grooves through angle adjusting piece inner hexagon bolts to be locked on the bearing connecting piece. The angle fixing pieces are installed on the two sides of the angle adjusting piece, kidney-shaped grooves are formed in the two connecting end faces of each angle fixing piece, and the angle adjusting piece is connected with the angle fixing pieces through the angle fixing piece outer hexagon bolts penetrating through the kidney-shaped grooves to lock square nuts. The swing angle fixing structure is added, the angle of the knuckle bearing can be fixed, the knuckle bearing does not participate in rotary motion, vibration and noise are reduced, the vacuum degree of the process environment is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of vacuum transmission mechanisms, and in particular to a spindle self-aligning mechanism with a fixed swing angle. Background Technology

[0002] In the rotational motion of rollers, due to limitations in the machining precision of the parts, self-aligning bearings or spherical roller bearings with mounting plates are generally selected for the bearings on both sides of the roller to achieve high coaxiality and thus ensure smooth operation of the roller. Self-aligning bearings have a smooth spherical surface on the inner side of the outer ring without fixed raceways, allowing for both self-alignment and rotation. Spherical roller bearings with mounting plates combine the features of spherical plain bearings and deep groove ball bearings. The outer ring of the deep groove ball bearing has a spherical structure, which mates with the spherical surface of the base to achieve angle adjustment.

[0003] In the existing technology, whether it is a self-aligning bearing or a spherical roller bearing, because it has to satisfy both rotation and self-alignment functions, the bearing structure is relatively complex and has more mating surfaces. It is more prone to vibration and noise than a simple deep groove ball bearing. Its special lubrication requirements cannot meet the needs of use in a vacuum environment. Moreover, the above two types of self-aligning bearings do not have an angle fixing function and generally need to be used in pairs. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a spindle self-aligning mechanism that simultaneously satisfies sealing, rotation, self-adaptive self-alignment, and fixed swing angle.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a spindle self-aligning mechanism with a fixed swing angle, including a base, a drive shaft, a deep groove ball bearing, a bearing bushing, a bearing connector, a spherical plain bearing, a bearing end cover, an angle adjustment component, a locking washer, a locking nut, and an angle fixing component. The drive shaft is sequentially fitted with the deep groove ball bearing, the bearing bushing, the bearing connector, and the spherical plain bearing and installed in the base. The bearing end cover is fixedly installed on one side of the deep groove ball bearing, and two locking nuts are provided on the other side. A locking washer is provided between the two locking nuts. The angle adjustment component... The device has multiple arc-shaped grooves distributed around its axis. The angle adjusting component is locked onto the bearing connector by passing through the arc-shaped grooves with hexagonal bolts. The angle fixing component is installed on both sides of the angle adjusting component and is locked onto the angle fixing end face of the base by hexagonal bolts. The angle fixing end face of the base has bolt holes distributed around the axis corresponding to the hexagonal bolts of the angle fixing component. The angle fixing component has waist-shaped grooves on its two connecting end faces. The angle adjusting component is connected to the angle fixing component by passing through the waist-shaped grooves with square nuts secured by hexagonal bolts of the angle fixing component.

[0006] Furthermore, a base sealing ring is fitted onto the base.

[0007] Furthermore, the two ends of the spherical bearing are respectively provided with an outer ring retaining ring and an inner ring retaining ring.

[0008] Furthermore, the angle adjustment component is also provided with marking lines.

[0009] Furthermore, the included angle β of the drive shaft swinging around the X-axis is ≤ 5°.

[0010] Furthermore, the spindle self-aligning mechanism can be used independently or in pairs.

[0011] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages:

[0012] This invention adds a swing angle fixing structure, which can fix the angle of the joint bearing. During the rotation of the entire component, the joint bearing does not participate in the rotational movement, which can reduce the generation of vibration and noise. It eliminates the need for independent lubrication of the joint bearing, minimizes the use of grease in the vacuum, reduces the evaporation and pollution of lubricating grease in the vacuum, improves the vacuum level of the process environment, and reduces the risk of the mechanism being affected by grease hardening. Its service life is not affected by the vacuum environment. It can be used independently or in pairs in vacuum equipment, and simultaneously meets the integrated structure of sealing, rotation, self-aligning, and swing angle fixing. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the paired installation structure of an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the drive component A in an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the passive component B in an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] A spindle self-aligning mechanism with a fixed swing angle includes a base 3, a drive shaft 4, a deep groove ball bearing 10, a bearing bushing 7, a bearing connector 24, a spherical plain bearing 6, a bearing end cap 9, an angle adjustment component 5, a locking washer 13, a locking nut 15, and an angle fixing component 17. The drive shaft 4 is sequentially fitted with the deep groove ball bearing 10, the bearing bushing 7, the bearing connector 24, and the spherical plain bearing 6 within the base 3. The bearing end cap 9 is fixedly installed on one side of the deep groove ball bearing 10, and two locking nuts 15 are provided on the other side. A locking washer 13 is provided between the two locking nuts 15. The angle adjustment component 5 is also provided with a marking line 28 and multiple arc-shaped grooves distributed around the shaft. 25. The angle adjusting component 5 is locked onto the bearing connector 24 by passing through the arc groove 25 with the angle adjusting component internal hex bolt 21. The angle fixing component 17 is installed on both sides of the angle adjusting component 5. The angle fixing component 17 is locked onto the angle fixing end face of the base 3 by the angle fixing component internal hex bolt 22. The angle fixing end face of the base 3 has bolt holes 27 distributed around the axis corresponding to the angle fixing component internal hex bolt 22. The angle fixing component 17 has waist-shaped grooves 26 on the two connecting end faces. The angle adjusting component 5 is connected to the angle fixing component 5 by passing through the waist-shaped groove 26 with the angle fixing component external hex bolt 23 and locking with the square nut 16. The included angle β of the drive shaft 4 swinging around the X-axis is ≤5°.

[0021] The spherical bearing 6 is provided with an outer ring retainer 8 and an inner ring retainer 11 at both ends. The base 3 is fitted with a base sealing ring 12, which has a sealing structure and can be used in vacuum equipment. The entire assembly can be used independently or in pairs.

[0022] Example

[0023] A fixed-angle spindle self-aligning mechanism is used in pairs, serving as the basic components of a drive assembly A and a passive assembly B. The drive assembly A and the passive assembly B are fixedly connected to a roller shaft 20 via their respective transmission shafts 4. The drive assembly A is constructed by combining a magnetic fluid 1, a connecting seat 2, and a universal coupling 18 with the spindle self-aligning mechanism. The magnetic fluid 1 is connected to the transmission shaft 4 via the coupling 18. The connecting seat 2 is provided with a connecting sealing ring 14 at the connection points between the magnetic fluid 1 and the base. The passive assembly B is constructed by combining a rear cover plate 19 with the spindle self-aligning mechanism. The maximum swing angle α of the transmission shafts 4 of the drive assembly and the passive assembly is ≤10°.

[0024] The principle of angle fixing adjustment: The drive shaft 4 of the drive component and the passive component can swing around the X-axis to form an included angle β. At this time, the plane where the marking line 28 of the angle adjustment piece 5 is located also forms an included angle β with the angle fixing surface of the base 3. Therefore, fixing the angle adjustment piece 5 fixes the swing angle of the drive shaft 4. As the swing angle of the drive shaft 4 changes, the fixing surfaces on both sides of the angle adjustment piece 5 will also form a corresponding angle with the X-axis. In order to meet the adjustment range, the angle adjustment piece 5 has multiple arc-shaped grooves 25 distributed around the axis on the marking surface, and the angle fixing piece 17 has waist-shaped grooves 26 on the two connecting end faces. Multiple bolt holes 27 are distributed on the angle fixing end face of the base 3. After adjusting the angle according to the requirements, rotate the angle adjustment piece 5 so that the fixing surfaces on both sides are perpendicular to the angle fixing surface of the base 3. Use the L-shaped part angle fixing piece 17 for connection, and lock the internal hexagonal bolts 21, internal hexagonal bolts 22, and external hexagonal bolts 23 of the angle adjustment piece to complete the swing angle fixing.

[0025] In a paired installation environment, the drive assembly and roller 20, and the passive assembly and roller 20 of the entire component can have different swing angles γ and δ.

[0026] This invention adds a swing angle fixing structure, which can fix the angle of the joint bearing. During the rotation of the entire component, the joint bearing does not participate in the rotational movement, which can reduce the generation of vibration and noise. It eliminates the need for independent lubrication of the joint bearing, minimizes the use of grease in the vacuum, reduces the evaporation and pollution of lubricating grease in the vacuum, improves the vacuum level of the process environment, and reduces the risk of the mechanism being affected by grease hardening. Its service life is not affected by the vacuum environment. It can be used independently or in pairs in vacuum equipment, and simultaneously meets the integrated structure of sealing, rotation, self-aligning, and swing angle fixing.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spindle self-aligning mechanism with a fixed swing angle, characterized in that: The system includes a base, a drive shaft, a deep groove ball bearing, a bearing bushing, a bearing connector, a spherical plain bearing, a bearing end cap, an angle adjustment component, a locking washer, a locking nut, and an angle fixing component. The drive shaft is sequentially fitted with the deep groove ball bearing, bearing bushing, bearing connector, and spherical plain bearing within the base. A bearing end cap is fixedly mounted on one side of the deep groove ball bearing, and two locking nuts are provided on the other side, with a locking washer placed between the two locking nuts. The angle adjustment component has multiple arc-shaped grooves distributed around the shaft. The angle adjustment component is locked to the bearing connector by hexagonal socket head caps passing through the arc-shaped grooves. The angle fixing component is installed on both sides of the angle adjustment component and is locked to the angle fixing end face of the base by hexagonal socket head caps. Bolt holes are distributed around the shaft on the angle fixing end face of the base corresponding to the hexagonal socket head caps of the angle fixing component. The angle fixing component has waist-shaped grooves on its two connecting end faces. The angle adjustment component is connected to the angle fixing component by square nuts locked through the waist-shaped grooves by hexagonal socket head caps of the angle fixing component.

2. The spindle self-aligning mechanism with a fixed swing angle according to claim 1, characterized in that: A base sealing ring is fitted onto the base.

3. The spindle self-aligning mechanism with a fixed swing angle according to claim 1, characterized in that: The spherical plain bearing is provided with an outer ring retainer and an inner ring retainer at both ends.

4. The spindle self-aligning mechanism with a fixed swing angle according to claim 1, characterized in that: The angle adjustment component is also provided with marking lines.

5. The spindle self-aligning mechanism with a fixed swing angle according to claim 1, characterized in that: The included angle β of the drive shaft swinging around the X-axis is ≤5°.

6. The spindle self-aligning mechanism with a fixed swing angle according to claim 1, characterized in that: The spindle self-aligning mechanism can be used independently or in pairs.

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