Auxiliary box ball bearing press fitting device and press fitting method

Abstract

The embodiment of the application provides a kind of auxiliary box ball bearing press mounting equipment and press mounting method, belong to bearing assembly technical field.The press mounting equipment includes: press mounting table, for supporting and positioning auxiliary box shell;Press mounting mechanism is set to the upper of the press mounting table, the press mounting mechanism includes: bearing inner ring press head, for press mounting bearing inner ring;Bearing outer ring press head is set to the periphery of the bearing inner ring press head, the setting height of the bearing outer ring press head is higher than the bearing inner ring press head, and the bearing outer ring press head and the bearing inner ring press head are elastically and lockably connected between.The press mounting equipment and press mounting method can press mounting bearing inner ring and bearing outer ring respectively, improve press mounting quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing assembly, in particular to a sub-gearbox ball bearing press-fitting device and press-fitting method. BACKGROUND

[0002] Generally, a commercial gearbox is provided with a sub-gearbox mechanism for gear shifting. There is a ball bearing between the sub-gearbox shell and the planet carrier. The inner ring of the ball bearing is in interference fit with the planet carrier, and the outer ring of the ball bearing is in interference fit with the bearing hole of the sub-gearbox shell. When assembling the ball bearing, both the inner ring and the outer ring need to be press-fitted in place, and the ball bearing balls and the retainer need to be protected from the press-fitting force. Therefore, the device structure design needs to consider the corresponding risks and ensure the product assembly quality.

[0003] The conventional technology is to press-fit the inner ring and the outer ring of the ball bearing at the same time. The press head is designed as a whole. First, the bearing inner ring is press-fitted in place, and the outer ring may not be in place. Then, through the next process, the bearing cover plate combined with the screw is used to tighten the bearing outer ring and the sub-gearbox shell in place. However, this method may cause the ball bearing balls and the retainer to be subjected to the press-fitting force, and increase the risk of torque decay of the cover plate screw in the subsequent work station. SUMMARY

[0004] The purpose of the present application is to provide a sub-gearbox ball bearing press-fitting device and press-fitting method, which can press-fit the bearing inner ring and the bearing outer ring respectively, and improve the press-fitting quality.

[0005] In order to achieve the above-mentioned purpose, the present application provides a sub-gearbox ball bearing press-fitting device, comprising:

[0006] A press-fitting table is used to support and position the sub-gearbox shell.

[0007] A press-fitting mechanism is arranged above the press-fitting table. The press-fitting mechanism comprises:

[0008] A bearing inner ring press head is used to press-fit the bearing inner ring.

[0009] A bearing outer ring press head is arranged on the periphery of the bearing inner ring press head. The setting height of the bearing outer ring press head is higher than that of the bearing inner ring press head. The bearing outer ring press head and the bearing inner ring press head are elastically and lockably connected.

[0010] Optionally, when press-fitting the bearing, the bearing outer ring press head is in an elastic state. After the bearing inner ring press head press-fits the bearing inner ring to a predetermined position on the sub-gearbox shell, the press-fitting mechanism is lifted, the bearing outer ring press head is locked, and the bearing outer ring is press-fitted again.

[0011] Optionally, the maximum pressure of the two times of pressing is the same.

[0012] Optionally, the press-fitting mechanism comprises:

[0013] a press head base, rigidly connected with the bearing inner ring press head;

[0014] a rotating assembly, comprising an upper rotating plate and a lower rotating plate, the upper rotating plate and the lower rotating plate being connected through an elastic mechanism, the upper rotating plate and the lower rotating plate each being provided with a first rotating disc capable of rotating with each other, the first rotating disc being provided with a first displacement limiting assembly, under the condition that the first rotating discs rotate with each other, the first displacement limiting assembly abuts or is misaligned to adjust the elastic distance between the upper rotating plate and the lower rotating plate, the upper rotating plate being connected with the press head base, and the lower rotating plate being connected with the bearing outer ring press head.

[0015] Optionally, the press fitting mechanism further comprises a first counterforce switching cylinder connected with the first rotating disc, for rotating the first rotating disc to adjust the elastic distance between the upper rotating plate and the lower rotating plate.

[0016] Optionally, the press fitting mechanism further comprises:

[0017] an elastic floating center, provided on the inner side of the bearing inner ring press head and connected with the bottom of the press head base;

[0018] a press head guiding mechanism, sleeved on the periphery of the press head base, for guiding the downward pressing direction of the press fitting mechanism;

[0019] a pressure calibration block, provided on the top of the press head base, for measuring the pressure of downward pressing;

[0020] a press rod, provided on the top of the pressure calibration block, for downward pressing the press head base.

[0021] Optionally, the press fitting table comprises a subcase housing floating positioning mechanism, for placing the subcase housing.

[0022] Optionally, the subcase housing floating positioning mechanism comprises:

[0023] a press fitting top plate, for placing the subcase housing;

[0024] a press fitting bottom plate, provided on the bottom of the press fitting top plate and connected with the press fitting top plate through an elastic mechanism;

[0025] a second rotating disc, provided on one side of one of the press fitting top plate and the press fitting bottom plate relative to the other one and rotatably connected with the one;

[0026] Second displacement limiting assemblies are arranged on opposite sides of the other and the second rotating disc respectively, and in the case of rotation of the second rotating disc, the second displacement limiting assemblies can abut or dislocate each other to adjust the elastic distance between the press-fitting top plate and the press-fitting bottom plate.

[0027] A second counterforce switching cylinder is connected with the second rotating disc and used to rotate the second rotating disc to adjust the elastic distance between the press-fitting top plate and the press-fitting bottom plate.

[0028] In another aspect, the application further provides a sub-gearbox ball bearing press-fitting method for controlling the press-fitting device as described above, and the press-fitting method comprises:

[0029] The bearing inner ring press head is lifted up and the bearing outer ring press head is locked;

[0030] The bearing inner ring press head is lifted up and the bearing outer ring press head is locked;

[0031] The bearing inner ring press head is lifted up and the bearing outer ring press head is locked;

[0032] In another aspect, the application further provides a sub-gearbox ball bearing press-fitting method for controlling the press-fitting device as described above, and the press-fitting method comprises:

[0033] The bearing inner ring press head is lifted up and the bearing outer ring press head is locked;

[0034] The bearing inner ring press head is lifted up and the bearing outer ring press head is locked;

[0035] The bearing inner ring press head is lifted up and the bearing outer ring press head is locked;

[0036] The bearing inner ring press head is lifted up and the bearing outer ring press head is locked;

[0037] Through the above technical solutions, the sub-gearbox ball bearing press-fitting device and the press-fitting method provided by the application press-fit the bearing inner ring and the bearing outer ring by the bearing inner ring press head and the bearing outer ring press head which are elastically and lockably connected, and the bearing inner ring and the bearing outer ring are separately press-fitted to position in the bearing press-fitting process, thereby improving the press-fitting quality.

[0038] Other features and advantages of the embodiments of the application will be described in detail in the following specific implementation part. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the embodiments of the application. In the drawings:

[0040] Figure 1 is a schematic view of a press-fitting device for a pinion ball bearing according to an embodiment of the present application;

[0041] Figure 2 is a sectional view of a press-fitting mechanism of the press-fitting device for a pinion ball bearing according to an embodiment of the present application;

[0042] Figure 3 is a partial enlarged schematic view of the press-fitting mechanism of the press-fitting device for a pinion ball bearing according to an embodiment of the present application;

[0043] Figure 4 is a schematic view of a press-fitting table of the press-fitting device for a pinion ball bearing according to an embodiment of the present application;

[0044] Figure 5 is a schematic view of an actual position of the press-fitting device for a pinion ball bearing according to an embodiment of the present application.

[0045] BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 1, press-fitting table 2, press-fitting mechanism

[0047] 3, bearing inner ring press head 4, bearing outer ring press head

[0048] 5, press head base 6, rotating assembly

[0049] 6a, upper rotating plate 6b, lower rotating plate

[0050] 6c, first rotating disc 6d, first displacement limiting assembly

[0051] 7, first counter-force switching cylinder 8, elastic floating center

[0052] 9, press head guide mechanism 10, pressure calibration block

[0053] 11, press rod 13, press-fitting top plate

[0054] 14, press-fitting bottom plate 15, second rotating disc

[0055] 16, second displacement limiting assembly 17, second counter-force switching cylinder DETAILED DESCRIPTION

[0056] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0057] In embodiments of the present invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0058] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0059] like Figure 1 The diagram shown is a schematic diagram of a secondary housing ball bearing press-fitting device according to one embodiment of the present invention. Figure 2 This is a cross-sectional view of the pressing mechanism of a secondary housing ball bearing pressing device according to an embodiment of the present invention. Figure 1 The pressing equipment may include a pressing table 1 and a pressing mechanism 2. The pressing table 1 supports and positions the sub-box housing. The pressing mechanism 2 is positioned above the pressing table 1 and includes an inner bearing ring pressing head 3 and an outer bearing ring pressing head 4, such as... Figure 2 As shown. The bearing inner ring press head 3 is used to press the bearing inner ring. The bearing outer ring press head 4 is located around the bearing inner ring press head 3, and the height of the bearing outer ring press head 4 is higher than that of the bearing inner ring press head 3. The bearing outer ring press head 4 and the bearing inner ring press head 3 are elastically and lockably connected.

[0060] In this embodiment, the specific pressing process can be one of various methods known to those skilled in the art. Considering the position and connection method of the bearing inner ring press head 3 and the bearing outer ring press head 4, in a preferred example of the present invention, when pressing the bearing, the bearing outer ring press head 4 is in an elastic state. After the bearing inner ring press head 3 presses the bearing inner ring to a predetermined position on the auxiliary housing, the pressing mechanism 2 is lifted and the bearing outer ring press head 4 is locked. It is then pressed down again to press the bearing outer ring to a predetermined position on the auxiliary housing, so that the bearing outer ring and the auxiliary housing are completely and tightly fitted, thereby pressing the bearing outer ring into place.

[0061] In order to ensure that the bearing inner ring and the bearing outer ring are pressed into place, in one embodiment of the present application, the maximum pressure of the two times of pressing is the same.

[0062] Figure 3 is a partial enlarged schematic view of a pressing mechanism of the sub-gearbox ball bearing pressing equipment according to one embodiment of the present application. In this embodiment, the specific form of the pressing mechanism 2 can be various forms known to those skilled in the art. In one embodiment of the present application, considering that the bearing inner ring and the bearing outer ring need to be pressed respectively, therefore, the pressing mechanism 2 can include a pressing head base 5 and a rotating assembly 6. The pressing head base 5 is rigidly connected with the bearing inner ring pressing head 3. As shown, the rotating assembly 6 includes an upper rotating plate 6a and a lower rotating plate 6b, the upper rotating plate 6a and the lower rotating plate 6b are connected through an elastic mechanism, and the upper rotating plate 6a and the lower rotating plate 6b are both provided with a first rotating disc 6c capable of rotating with each other, the first rotating disc 6c is provided with a first displacement limiting assembly 6d, and in the case of mutual rotation of the first rotating disc 6c, the first displacement limiting assembly 6d abuts or is misaligned to adjust the elastic distance between the upper rotating plate 6a and the lower rotating plate 6b. Figure 3 The upper rotating plate 6a is connected with the pressing head base 5, and the lower rotating plate 6b is connected with the bearing outer ring pressing head 4.

[0063] Further, in order to rotate the first rotating disc 6c, in this embodiment, the pressing mechanism 2 further includes a first counter-force switching cylinder 7. The first counter-force switching cylinder 7 is connected with the first rotating disc 6c, and is used to rotate the first rotating disc 6c to adjust the elastic distance between the upper rotating plate 6a and the lower rotating plate 6b.

[0064] On the basis of the above, the pressing mechanism 2 further includes an elastic floating center 8, a pressing head guide mechanism 9, a pressure calibration block 10 and a pressing rod 11. The elastic floating center 8 is arranged on the inner side of the bearing inner ring pressing head 3 and is connected with the bottom of the pressing head base 5. The pressing head guide mechanism 9 is sleeved on the periphery of the pressing head base 5, and is used to guide the pressing direction of the pressing mechanism 2. The pressure calibration block 10 is arranged on the top of the pressing head base 5, and is used to measure the pressure of the pressing. The pressing rod 11 is arranged on the top of the pressure calibration block 10, and is used to press the pressing head base 5.

[0065] In this embodiment, the specific form of the pressing table 1 can be various forms known to those skilled in the art. In one embodiment of the present application, considering that the pressing table 1 needs to accommodate the sub-gearbox shell, the pressing table 1 can include a sub-gearbox shell floating positioning mechanism for accommodating the sub-gearbox shell.

[0066]

[0067] Figure 4 ​is a schematic view of a pressing table of a differential ball bearing pressing device according to an embodiment of the present application. Further, in order to enable the differential housing floating positioning mechanism to float and position the differential housing, in this embodiment, the differential housing floating positioning mechanism can include a pressing top plate 13, a pressing bottom plate 14, a second rotating disc 15, a second displacement limiting assembly 16 and a second counterforce switching cylinder 17, as shown in Figure 4 The pressing top plate 13 is used to specifically seat the differential housing. The pressing bottom plate 14 is arranged at the bottom of the pressing top plate 13 and is connected with the pressing top plate 13 through an elastic mechanism. The second rotating disc 15 is arranged on one side of one of the pressing top plate 13 and the pressing bottom plate 14 relative to the other and is rotatably connected with the one; the second displacement limiting assembly 16 is arranged on the other side of the other of the pressing top plate 13 and the pressing bottom plate 14 relative to the second rotating disc 15, and in the case that the second rotating disc 15 rotates, the second displacement limiting assembly 16 can abut or dislocate with each other to adjust

[0068] the elastic distance between the pressing top plate 13 and the pressing bottom plate 14. The second counterforce switching cylinder 17 is connected with the second rotating disc 15 and is used to rotate the second rotating disc 15 to adjust the elastic distance between the pressing top plate 13 and the pressing bottom plate 14.

[0069] Figure 5 is a schematic view of the actual position of a differential ball bearing pressing device according to an embodiment of the present application, in which the pressing table 1 and the pressing mechanism 2 are connected through the mechanism shown in the figure.

[0070] On the other hand, the present application also provides a differential ball bearing pressing method for controlling the pressing device as described in any of the above, which comprises: controlling the bearing outer ring pressing head to be unlocked, and the bearing inner ring pressing head to be pressed down, so that the bearing inner ring is pressed into place; lifting the bearing inner ring pressing head and locking the bearing outer ring pressing head; again pressing down the bearing inner ring pressing head, so that the bearing outer ring is pressed into place.

[0071] On the other hand, the present application also provides a differential ball bearing pressing method for controlling the pressing device as described in any of the above, which comprises: controlling the bearing outer ring pressing head to be unlocked, and the bearing inner ring pressing head to be pressed down, so that the bearing inner ring is pressed into place; lifting the bearing inner ring pressing head and locking the bearing outer ring pressing head; again pressing down the bearing inner ring pressing head, so that the bearing outer ring is pressed into place.

[0072] Through the technical scheme, the auxiliary box ball bearing press equipment and press method provided by the application press the bearing inner ring and the bearing outer ring to position through the elastic and lockable bearing inner ring press head and the bearing outer ring press head combined with the auxiliary box shell arranged on the press table, so that the bearing inner ring and the bearing outer ring are separately pressed to position in the bearing press process, thereby improving the press quality.

[0073] It should also be noted that the terms "comprising", "comprising" or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0074] The above is only an embodiment of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the application shall be included in the scope of claims of the application.

Claims

1. A pinion ball bearing press equipment, characterized in that, The press-fitting device comprises: a press-fitting table for supporting a positioning sub-box shell; a press-fitting mechanism arranged above the press-fitting table, the press-fitting mechanism comprising: a bearing inner ring press head for press-fitting a bearing inner ring; a bearing outer ring press head arranged at the periphery of the bearing inner ring press head, the bearing outer ring press head being arranged at a height higher than the bearing inner ring press head, and the bearing outer ring press head and the bearing inner ring press head being elastically and lockably connected; the press-fitting mechanism comprising a press head base rigidly connected with the bearing inner ring press head; a rotating assembly comprising an upper rotating plate and a lower rotating plate, the upper rotating plate and the lower rotating plate being connected through an elastic mechanism, the upper rotating plate and the lower rotating plate each being provided with a first rotating disc capable of rotating with each other, the first rotating disc being provided with a first displacement limiting assembly, in the case of mutual rotation of the first rotating discs, the first displacement limiting assembly abutting or being misaligned to adjust the elastic distance between the upper rotating plate and the lower rotating plate, the upper rotating plate being connected with the press head base, and the lower rotating plate being connected with the bearing outer ring press head.

2. The press assembly of claim 1, wherein, In the process of press-fitting the bearing, the bearing outer ring press head is in an elastic state, after the bearing inner ring press head press-fits the bearing inner ring to a predetermined position on the sub-box shell, the press-fitting mechanism is lifted, the bearing outer ring press head is locked, and the bearing outer ring is press-fitted again.

3. The press assembly of claim 2 wherein, The maximum pressure of the two times of pressing is the same.

4. The press device of claim 1, wherein, The press-fitting mechanism further comprises a first counterforce switching cylinder connected with the first rotating disc, for rotating the first rotating disc to adjust the elastic distance between the upper rotating plate and the lower rotating plate.

5. The press device of claim 1, wherein, The press-fitting mechanism further comprises: an elastic floating center, arranged at the inner side of the bearing inner ring press head, and connected with the bottom of the press head base; a press head guide mechanism, sleeved at the periphery of the press head base, for guiding the downward pressing direction of the press-fitting mechanism; a pressure calibration block, arranged at the top of the press head base, for measuring the pressure of downward pressing; a press rod, arranged at the top of the pressure calibration block, for downward pressing the press head base.

6. The press device of claim 1, wherein, The press-fitting table comprises a sub-box shell floating positioning mechanism for placing the sub-box shell.

7. The press fitting apparatus according to claim 6, wherein The sub-box shell floating positioning mechanism comprises: a press-fitting top plate for placing the sub-box shell; a press-fitting bottom plate arranged at the bottom of the press-fitting top plate and connected with the press-fitting top plate through an elastic mechanism; a second rotating disc arranged on one side of one of the press-fitting top plate and the press-fitting bottom plate relative to the other, and rotatably connected with the one; a second displacement limiting assembly arranged on the opposite side of the other and the second rotating disc, in the case of rotation of the second rotating disc, the second displacement limiting assembly can abut or misalign with each other to adjust the elastic distance between the press-fitting top plate and the press-fitting bottom plate; a second counterforce switching cylinder connected with the second rotating disc, for rotating the second rotating disc to adjust the elastic distance between the press-fitting top plate and the press-fitting bottom plate.

8. A method of press-fitting a ball bearing cage for controlling the press-fitting apparatus as claimed in any one of claims 1 to 7, characterized in that, The press-fitting method comprises: controlling the bearing outer ring press head to be unlocked, and the bearing inner ring press head to be pressed downward, so that the bearing inner ring is press-fitted in place; Lift the bearing inner ring press head and lock the bearing outer ring press head; Again press down the bearing inner ring press head to make the bearing outer ring press fit in place.

9. A method of press-fitting a ball bearing cage for controlling the press-fitting apparatus as claimed in claim 7, characterized in that, The press fitting method comprises: Control the bearing outer ring press head and the sub-box shell floating positioning mechanism to be unlocked, and press down the bearing inner ring press head to make the bearing inner ring press fit in place; Lift the bearing inner ring press head and lock the bearing outer ring press head and the sub-box shell floating positioning mechanism; Again press down the bearing inner ring press head to make the bearing outer ring press fit in place.

Images