Bearing closing-in device with pressure head capable of being quickly replaced

Abstract

The utility model belongs to the field of bearing installation tool design, and particularly relates to a bearing closing-in device with a pressure head capable of being replaced quickly. The special bearing closing-in tool does not have universality, is complex in structure and can only complete installation of bearings of characteristic models. The device comprises a supporting seat, a quick-change pressure head, a sliding rod and a positioning rod, a square hole is formed in the lower end of the supporting seat, and a groove is formed in the wall surface of the square hole; a square block inserted into the square hole is arranged at the upper end of the quick-change pressure head, a steel ball is jacked into the groove through a spring on the wall face of the square block so that the quick-change pressure head can be connected with the supporting base, a closing-in stamping annular groove is formed in the lower end of the quick-change pressure head, a precision positioning hole is formed in the quick-change pressure head, and the upper end of the sliding rod is inserted into the precision positioning hole and can slide relatively. Positioning rods are fixed at the lower ends of the sliding rods. The method is suitable for closing up all bearings with outer rings provided with grooves or product bodies provided with grooves, and concentricity of the double-face closed-up bearings and the bodies and consistency and stability of the flanging process are effectively guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of bearing installation tool design, specifically relating to a bearing end-closing device with a quick-change pressure head. Background Technology

[0002] Bearings are one of the typical parts in mechanical assembly. Bearing installation is widely used in aircraft transmission and assembly. Bearing installation is generally achieved by tightening the bearing body through mechanical deformation or deformation of the product mounting surface. Special tightening tools are usually required to complete the tightening and fixing of the bearing.

[0003] Existing bearing end-sealing tools are mostly dedicated end-sealing tools for specific models. Their structures all involve pressing the bearing or product body with a punch to achieve bearing installation. Furthermore, the dedicated structures for end-sealing double-sided bearings and installing concentric bearings are often more complex.

[0004] The design of a special bearing end-closing tool is not universal and can only complete the installation of bearings of specific models. Furthermore, for some double-sided bearings, due to manufacturing errors in the bearing and the base, it is difficult to ensure the consistency of the bearing during extrusion deformation. This results in poor bearing consistency after installation, which in turn leads to jamming of the inner ring. Utility Model Content

[0005] This utility model provides a bearing end-closing device with a quick-change pressure head, which meets the installation requirements of various standard types of bearings in actual production. Through the square quick-release structure, the pressure head can be quickly changed. The end-closing tool body is designed with a stepped variable diameter pin, which can quickly achieve the center positioning of the bearing and ensure the consistency of the end-closing on both sides.

[0006] This utility model proposes a bearing end-closing device with a quick-change pressure head, including a support base, a quick-change pressure head, a slide rod, and a positioning rod. The support base has a square hole at its lower end, and a groove on the wall of the square hole. The quick-change pressure head has a square block at its upper end that inserts into the square hole. A steel ball is pushed into the groove on the wall of the square block by a spring to connect the quick-change pressure head and the support base. The quick-change pressure head has an annular groove for end-closing stamping at its lower end, and a precision positioning hole inside the quick-change pressure head. The upper end of the slide rod is inserted into the precision positioning hole and can slide relative to it. The positioning rod is fixed at the lower end of the slide rod, and the size of the positioning rod is such that it fits with the inner hole of the bearing.

[0007] Advantageously, the upper end of the support base is in contact with the press and subjected to force.

[0008] Advantageously, the square hole has grooves on all four walls.

[0009] Advantageously, the groove is hemispherical in shape.

[0010] Advantageously, the main body of the quick-change pressure head is an annular structure, with a square block at the upper end of the annular structure. The square block has an axial mounting inner hole and a transverse mounting hole. A spring is fixed in the mounting hole, and the outer end of the spring presses against a steel ball.

[0011] Advantageously, the inner hole of the annular structure forms the precision positioning hole, and the constricted stamped annular groove is machined on the lower end face of the annular structure.

[0012] Advantageously, the lower end of the slide bar is threadedly connected to the positioning rod.

[0013] This utility model comprehensively considers the characteristics of bearing installation and the diversity of bearings. Through the square quick-release structure, the pressure head can be quickly changed. The body of the closing tool is designed with a stepped variable diameter pin, which can quickly achieve the center positioning of the bearing and ensure the consistency of the closing on both sides. This utility model effectively solves the problems of quick change and centering of bearing installation.

[0014] Beneficial effects: The square structure of the support base and quick-change pressure head enables quick pressure head replacement. For different bearing models, the quick-change pressure head can be replaced to achieve rapid preparation and installation of bearing end caps. It is suitable for single-sided and double-sided end caps of various bearings, and applicable to the end caps of all bearings with grooved outer rings or grooved product bodies. Moreover, the cylindrical stepped structure effectively ensures the concentricity of the double-sided end cap bearing with the body, as well as the consistency and stability of the flanging process, effectively ensuring the stable installation of the bearing in the product and improving the production efficiency of bearing installation.

[0015] The features, functionalities, and advantages already discussed can be implemented independently in various examples, or combined in other examples. Further details of the examples can be seen in the following description and accompanying figures. Attached Figure Description

[0016] When read in conjunction with the accompanying drawings, the embodiments, preferred modes of use, other objects, and descriptions thereof will be best understood by referring to the following detailed description of the embodiments of the present invention, wherein:

[0017] Figure 1 This is a schematic diagram of the bearing closing device of this utility model;

[0018] Figure 2 This is a cross-sectional view of the bearing closing device of this utility model;

[0019] Figure 3 This is a perspective view of the support base;

[0020] Figure 4 This is a sectional view of the support base;

[0021] Figure 5 This is a cross-sectional view of the quick-change pressure head.

[0022] 1-Support base, 2-Quick-change pressure head, 3-Slide rod, 4-Positioning rod, 5-Bearing, 6-Groove, 7-Steel ball, 8-Spring, 9-Constricting stamped annular groove, 10-Precision positioning hole Detailed Implementation

[0023] The disclosed examples will be described more fully with reference to the accompanying drawings, some (but not all) of which are shown.

[0024] See Figure 1 and 2 The illustrated embodiment of the bearing end-closing device with a quick-change pressure head includes a support base 1, a quick-change pressure head 2, a slide rod 3, and a positioning rod 4. The support base 1 and the quick-change pressure head 2 can be quickly interchanged. The slide rod 3 is inserted into the precision positioning hole 10 of the quick-change pressure head 2. The lower end of the slide rod 3 is connected to the positioning rod 4 for centering during bearing installation, ensuring the centering of the inner ball and guaranteeing consistent force distribution during bearing or base installation. The lower end of the positioning rod 4 mates with the inner hole of the bearing.

[0025] See Figure 3 and Figure 4 The support base 1 shown has an upper part that fits into the press during the closing process, and a square hole structure is carved into the lower part. The square hole has a groove 6 on its side wall, which can realize quick replacement with the quick-change pressure head 2.

[0026] See Figure 5 The quick-change pressure head 2 shown has a square block on its upper part, and retractable steel balls 7 are installed on the four sides of the square block. The steel balls 7 are pushed into the groove 6 by the spring 8 to realize the elastic connection between the quick-change pressure head 2 and the support base 1. The lower part is a closed-end stamped annular groove 9, and the interior is designed with precision positioning holes 10 for cooperating with the slide rod 3.

[0027] Positioning rod 4, the sliding rod mates with the inner hole of the installed bearing, one side is connected to the main rod, and the other side is used to fix the inner hole of the installed bearing, effectively ensuring the consistency of the force on the bearing or base during the closing process.

[0028] During operation, select the appropriate quick-change pressure head 2 and positioning rod 4 according to the type of bearing to be installed. The positioning rod 4 is connected to the lower end of the slide rod 3 by a thread. Then, insert the upper end of the slide rod 3 into the precision positioning hole 10 of the quick-change pressure head 2, and insert the positioning rod 4 into the inner hole of the bearing to be installed, ensuring that the inner hole of the bearing is concentric with the closing tool during installation, thus preparing for bearing closing. Install the quick-change pressure head 2 into the support base 1 to complete the overall connection. Apply pressure to the upper end of the support base 1 to close the bearing.

[0029] This utility model can be used in combination of two or more sets for bearings that are installed on one or both sides.

[0030] This invention comprehensively considers the characteristics of bearing installation and the diversity of bearings. Through a square quick-release structure, it effectively enables rapid replacement of the pressure head. The stepped reducing pin design on the closing tool body allows for quick centering of the bearing, ensuring consistency in the closing process on both sides. This invention effectively solves the problems of quick replacement and centering in bearing installation, thereby saving production input and improving product processing efficiency. It is mainly applied to the closing and installation of bearings in various product models, specifically for the installation of bearings in small and medium-sized components within aircraft transmission mechanisms.

[0031] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may be described as having different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical applications of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. A bearing end-closing device with a quick-change pressure head, characterized in that: The device includes a support base (1), a quick-change pressure head (2), a slide rod (3), and a positioning rod (4). The support base (1) has a square hole at its lower end and a groove (6) on the wall of the square hole. The quick-change pressure head (2) has a square block at its upper end that can be inserted into the square hole. A steel ball (7) is pushed into the groove (6) by a spring (8) on the wall of the square block to connect the quick-change pressure head (2) with the support base (1). The quick-change pressure head (2) has a constricted stamping annular groove (9) at its lower end and a precision positioning hole (10) inside the quick-change pressure head (2). The upper end of the slide rod (3) is inserted into the precision positioning hole (10) and can slide relative to it. The positioning rod (4) is fixed at the lower end of the slide rod (3). The size of the positioning rod (4) is such that it fits with the inner hole of the bearing (5).

2. The bearing closing device according to claim 1, characterized in that: The upper end of the support base (1) is in contact with the press and subjected to force.

3. The bearing closing device according to claim 2, characterized in that: The square hole has grooves (6) on all four walls.

4. The bearing closing device according to claim 3, characterized in that: The groove (6) is hemispherical in shape.

5. The bearing closing device according to claim 1, characterized in that: The main body of the quick-change pressure head (2) is a ring structure, and the upper end of the ring structure has the square block. The square block has an axial assembly inner hole and a transverse mounting hole. A spring (8) is fixed in the mounting hole, and the outer end of the spring (8) presses against the steel ball (7).

6. The bearing closing device according to claim 5, characterized in that: The inner hole of the annular structure forms the precision positioning hole (10), and the closing stamped annular groove (9) is machined on the lower end face of the annular structure.

7. The bearing closing device according to claim 1, characterized in that: The lower end of the slide rod (3) is threadedly connected to the positioning rod (4).

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