Floating device for press fitting

Abstract

The utility model relates to the technical field of press fitting, in particular to a floating device for press fitting, which comprises a pressing plate and a top shaft vertically mounted on the pressing plate in a penetrating manner, the top shaft is sequentially provided with an upper thrust bearing, a lower thrust bearing, a spring mechanism and a locking structure in a penetrating mode from top to bottom, the upper thrust bearing and the lower thrust bearing are clamped to the two sides of the pressing plate respectively, the locking structure is installed on the top shaft in a locking mode, the bottom of the spring mechanism is installed on the locking structure in a supporting mode, and the top of the spring mechanism is elastically pressed on the lower thrust bearing; the tight rings in the upper thrust bearing and the lower thrust bearing are reversely mounted, and the loose rings in the upper thrust bearing and the lower thrust bearing are positively mounted; and the loose rings in the upper thrust bearing and the lower thrust bearing are oppositely arranged and are fixed on the pressing plate. According to the press-fitting device, due to the fact that the tight rings in the upper thrust bearing and the lower thrust bearing are reversely installed, the top shaft can horizontally move by a certain amount through the gap between the bearings, when press-fitting inclination occurs, the spring mechanism pushes the top shaft to be aligned, automatic press-fitting calibration is achieved, and the production stability and the yield are improved.

Description

Technical Field

[0001] This application relates to the field of press-fitting technology, and in particular to a floating device for press-fitting. Background Technology

[0002] During the assembly process, pins, pin sleeves, and other pin components are typically pressed into the corresponding pin holes of the workpiece using a press-fitting mechanism. However, conventional press-fitting mechanisms require precise alignment between the pins and holes. If the hole positions of the product being press-fitted are off, the product is prone to misalignment or misplacing, affecting the stability of batch press-fitting. Therefore, further improvements are warranted. Utility Model Content

[0003] In order to ensure the pressing effect of the product and improve the stability and pass rate of mass production, this application provides a floating device for pressing.

[0004] The floating device for press-fitting provided in this application adopts the following technical solution:

[0005] A floating device for press fitting includes a pressure plate and a top shaft. The top shaft is vertically mounted on the pressure plate, and its number is set according to the number of pin holes of the workpiece to be tooled. From top to bottom, the top shaft is sequentially mounted with an upper thrust bearing, a lower thrust bearing, a spring mechanism, and a locking structure. The upper and lower thrust bearings are respectively clamped on both sides of the pressure plate. The locking structure is locked onto the top shaft. The bottom of the spring mechanism is supported and mounted on the locking structure. The top of the spring mechanism is elastically pressed against the lower thrust bearing. The tight rings of the upper and lower thrust bearings are reverse-mounted, and their loose rings are upright-mounted. The loose rings of the upper and lower thrust bearings are arranged opposite each other and are both fixed to the pressure plate.

[0006] By adopting the above technical solution, the tight rings in the upper and lower thrust bearings are reversed, while the loose rings are installed in the correct position, allowing the top shaft to move horizontally to a certain extent through the bearing clearance. When tilting occurs during press-fitting, one side of the spring mechanism is compressed, deforms, and applies downward pressure, pushing the top shaft back to the correct position. Therefore, during batch press-fitting of products, even if the hole positions for press-fitting differ between different batches, the press-fitting can still be automatically calibrated, ensuring the press-fitting effect and improving the stability and yield rate of batch production.

[0007] Optionally, the loose rings in the upper and lower thrust bearings are fixed to the pressure plate by an embedded method.

[0008] Optionally, both the upper thrust bearing and the lower thrust bearing are covered with bearing sleeves, and the bearing sleeves are installed on the top shaft.

[0009] By adopting the above technical solution, bearing sleeves are used to wrap the upper thrust bearing and the lower thrust bearing to protect them.

[0010] Optionally, the spring mechanism includes a spring and a spring base, the spring base being sleeved and installed on the top shaft, the bottom of the spring being snapped into the spring seat, and the top of the spring being elastically pressed upward against the lower thrust bearing.

[0011] Optionally, the spring is a disc spring.

[0012] By adopting the above technical solution, since the disc spring has a large deformation energy per unit volume, it can withstand a large load in a small space. Therefore, it can perform the return-to-center treatment of the top shaft within a small deformation stroke, and its return-to-center effect is relatively good.

[0013] Optionally, the locking structure includes two locking nuts and a locking washer installed between the two locking nuts, and both locking nuts are threaded onto the top shaft.

[0014] Optionally, the bottom of the top shaft is formed with an annular pre-installation opening, which extends downward into an open shape and is used for pre-installation and positioning of pins and other pin-type components.

[0015] By adopting the above technical solution and setting an annular pre-installation port, the pin sleeve can be pre-installed and positioned in the annular pre-installation port during the press-fitting process of the pin sleeve type pin. At the same time, after the pin sleeve is installed on the top shaft, the top shaft can stabilize its interior, so that the pin sleeve is not easily deformed during the press-fitting process, thus ensuring its press-fitting effect.

[0016] Optionally, the bottom of the top shaft is chamfered.

[0017] By adopting the above technical solution, a chamfer is formed at the bottom end of the top shaft, which facilitates the insertion of the top shaft during the pressing process.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. Due to the reversed tight rings and upright loose rings in the upper and lower thrust bearings, the top shaft can move horizontally to a certain extent through the bearing clearance. When tilting occurs during press-fitting, the spring mechanism deforms on one side under pressure and applies downward force, pushing the top shaft back to the correct position. Therefore, during batch press-fitting of products, even if the hole positions of different batches of products deviate, the press-fitting can still be automatically calibrated, ensuring the press-fitting effect of the products and improving the stability and pass rate of batch production.

[0020] 2. Use bearing sleeves to encase and protect the upper and lower thrust bearings;

[0021] 3. Because disc springs have a large deformation energy per unit volume, they can withstand a large load in a small space. Therefore, they can perform the return-to-center treatment of the top shaft within a small deformation stroke, and their return-to-center effect is relatively good. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the overall structure of a floating device for press-fitting according to this application.

[0023] Figure 2 This is to demonstrate the structural state of the tight ring and loose ring in the upper thrust bearing and lower thrust bearing of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Pressure plate; 2. Top shaft; 21. Annular pre-assembly port; 22. Chamfer; 3. Upper thrust bearing; 31. Tightening ring; 32. Loosening ring; 4. Lower thrust bearing; 5. Spring mechanism; 51. Spring; 52. Spring base; 6. Locking structure; 61. Locking nut; 62. Locking washer; 7. Bearing sleeve; 100. Workpiece to be tooled; 101. Pin. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0027] This application discloses a floating device for press fitting.

[0028] Reference Figure 1 A floating device for press fitting includes a pressure plate 1 and a top shaft 2. The top shaft 2 is vertically mounted on the pressure plate 1, and its number is set according to the number of pin holes of the workpiece 100 to be tooled. In this embodiment, two top shafts 2 are used as an example.

[0029] The top shaft 2 is sequentially fitted with an upper thrust bearing 3, a lower thrust bearing 4, a spring mechanism 5, and a locking structure 6 from top to bottom. The upper thrust bearing 3 and the lower thrust bearing 4 are respectively clamped on both sides of the pressure plate 1. The locking structure 6 is locked and installed on the top shaft 2. The bottom support of the spring mechanism 5 is installed on the locking structure 6, and the top of the spring mechanism 5 is elastically pressed against the lower thrust bearing 4.

[0030] Reference Figure 2 In this application, the tight ring 31 of the upper thrust bearing 3 and the lower thrust bearing 4 are reversed and their loose ring 32 are upright. The loose ring 32 of the upper thrust bearing 3 and the lower thrust bearing 4 are arranged opposite to each other and fixed to the pressure plate 1 in an embedded manner, so that the top shaft 2 can move horizontally to a certain extent through the gap of the bearing, thereby obtaining the ability to offset to a certain extent in the horizontal direction.

[0031] Reference Figure 1 In this embodiment, the upper thrust bearing 3 and the lower thrust bearing 4 are both covered with bearing sleeves 7, and the bearing sleeves 7 are installed on the top shaft 2 to wrap the exposed parts of the outer tight rings 31 of the upper thrust bearing 3 and the lower thrust bearing 4 for protection.

[0032] Specifically, in this embodiment, the locking structure 6 includes two locking nuts 61 and a locking washer 62 installed between the two locking nuts 61, and both locking nuts 61 are threaded onto the top shaft 2 to form a support base for the spring mechanism 5 to be installed.

[0033] Specifically, in this embodiment, the spring mechanism 5 includes a spring 51 and a spring base 52. In this embodiment, the spring 51 is a disc spring, and the spring base 52 is sleeved and installed on the top shaft 2, with its top being open. The bottom of the spring 51 is fitted into the spring base 51, and the top of the spring 51 is elastically pressed upward against the lower thrust bearing 4.

[0034] In this embodiment, the bottom of the top shaft 2 is formed with an annular pre-installation opening 21, which extends downward into an open shape and is used for pre-installing and positioning the pin sleeve 101. The bottom of the top shaft 2 is formed with a chamfer 22; in other embodiments, it can be formed with a rounded corner.

[0035] On the one hand, by setting an annular pre-installation port 21, the pin sleeve can be pre-installed and positioned in the annular pre-installation port 21 during the press-fitting process of the pin sleeve type pin. At the same time, after the pin sleeve is installed on the top shaft 2, the top shaft 2 can stabilize its interior, and the pin sleeve is not easily deformed during the press-fitting process, thus ensuring its press-fitting effect. On the other hand, by forming a chamfer 22 at the bottom end of the top shaft 2, it is easier for the top shaft 2 to be pushed in during the press-fitting process.

[0036] The implementation principle is as follows:

[0037] In conventional press-fitting mechanisms, precise alignment of pins and holes is crucial during press-fitting. Deviations in the hole positions can lead to misalignment or uneven pressing, impacting the stability of batch press-fitting. However, in this application, the reversed installation of the tightening ring 31 and the forward-mounted installation of the loosening ring 32 in the upper and lower thrust bearings 3 and 4 allow the top shaft 2 to move horizontally a certain amount through the bearing clearance. When press-fitting tilt occurs, the spring mechanism 5 deforms under pressure on one side, applying downward force to push the top shaft 2 back to its upright position. Therefore, even with deviations in the hole positions between different batches of products during batch press-fitting, the mechanism can automatically calibrate the press-fitting process, ensuring optimal pressing results and improving the stability and yield rate of batch production.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A floating device for press-fitting, characterized in that: Includes a pressure plate (1) and a top shaft (2); the top shaft (2) is vertically mounted on the pressure plate (1), and its number is set according to the number of pin holes of the workpiece (100) to be tooled; the top shaft (2) is sequentially mounted with an upper thrust bearing (3), a lower thrust bearing (4), a spring mechanism (5), and a locking structure (6) from top to bottom, the upper thrust bearing (3) and the lower thrust bearing (4) are respectively clamped on both sides of the pressure plate (1), and the locking structure (6) is... Structure (6) is locked and installed on top shaft (2). The bottom support of spring mechanism (5) is installed on locking structure (6). The top of spring mechanism (5) is elastically pressed against lower thrust bearing (4). The tight ring (31) in upper thrust bearing (3) and lower thrust bearing (4) is reversed and its loose ring (32) is upright. The loose ring (32) in upper thrust bearing (3) and lower thrust bearing (4) are arranged opposite to each other and are both fixed to pressure plate (1).

2. The floating device for press-fitting according to claim 1, characterized in that: The loose ring (32) in the upper thrust bearing (3) and lower thrust bearing (4) is fixed to the pressure plate (1) by an embedded method.

3. A floating device for press fitting according to claim 1, characterized in that: The upper thrust bearing (3) and the lower thrust bearing (4) are both covered with bearing sleeves (7), and the bearing sleeves (7) are installed on the top shaft (2).

4. A floating device for press-fitting according to claim 1, characterized in that: The spring mechanism (5) includes a spring (51) and a spring base (52). The spring base (52) is sleeved and installed on the top shaft (2). The bottom of the spring (51) is snapped into the spring (51) seat, and the top of the spring (51) is elastically pressed upward against the lower thrust bearing (4).

5. A floating device for press-fitting according to claim 4, characterized in that: The spring (51) is a disc spring.

6. A floating device for press fitting according to claim 1, characterized in that: The locking structure (6) includes two locking nuts (61) and a locking washer (62) installed between the two locking nuts (61), and both locking nuts (61) are threaded onto the top shaft (2).

7. A floating device for press fitting according to claim 1, characterized in that: The bottom of the top shaft (2) is formed with an annular pre-installation opening (21), which extends downward into an open shape and is used for the pre-installation and positioning of the pin sleeve (101).

8. A floating device for press fitting according to claim 6, characterized in that: The bottom of the top shaft (2) is chamfered (22).

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