Retainer mounting assembly in thrust bearing and press fitting mechanism for thrust bearing

Abstract

The application is a retaining ring mounting assembly in a thrust bearing and a thrust bearing press mounting mechanism, comprising: a mounting table on which a B plate and a pre-positioned retaining ring are placed; a pressing driving assembly arranged above the mounting table and corresponding to an anchor point at the inner ring of the B plate; and a press head assembly arranged at the output end of the bottom of the pressing driving assembly; the press head in the press head assembly is elastically connected with the press head assembly, the bottom of the press head is provided with a notch for abutting against the inner ring of the retaining ring, the pressing driving assembly drives the press head to move downward, the press head moves radially outward during the pressing process, pulls one side of the retaining ring outward and then clamps it into the B plate to complete the cooperation with the B plate; through the radial movement of the press head assembly and the abutting of the thrust assembly, the automatic sliding installation of the B plate and the retaining ring is realized, through the lifting of the pressing driving assembly and the abutting of the thrust block assembly, the press mounting of the A plate and the retaining ring is realized, and the automatic installation of the thrust bearing is realized.

Description

Technical Field

[0001] This invention relates to a thrust bearing press-fit mechanism, and in particular to a cage mounting assembly for a thrust bearing and a thrust bearing press-fit mechanism. Background Technology

[0002] A thrust bearing consists of a housing ring (A-plate), a shaft ring (B-plate), a cage, and rollers. During installation, the rollers are typically installed inside the cage first. After the cage mates with the B-plate, it is then pressed into the A-plate. Anchor points protrude from the inner ring of the B-plate, and the inner ring of the cage mates with these anchor points to prevent the cage from separating from the B-plate. Finally, the outer ring of the cage is press-fitted against the circumferential inner wall of the A-plate, thus completing the assembly of the thrust bearing.

[0003] Traditional assembly methods involve manual assembly, which is time-consuming and labor-intensive, especially when assembling the cage with the B plate, which requires considerable effort to complete.

[0004] In summary, how to achieve automated assembly of the cage and B-plate, as well as automated assembly of the thrust bearing, has become an urgent problem for researchers in this field. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to achieve automated assembly of the cage and B plate, and automated assembly of the thrust bearing;

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] This invention relates to a cage mounting assembly for a thrust bearing, comprising: a mounting platform on which a B-plate and a pre-positioned cage are placed; a downward driving assembly disposed above the mounting platform and corresponding to an anchor point on the inner ring of the B-plate; and a pressure head assembly disposed at the output end at the bottom of the downward driving assembly; the pressure head in the pressure head assembly is elastically connected to the pressure head assembly, and its bottom is provided with a notch abutting against the inner ring of the cage. The downward driving assembly drives the pressure head downward, and during the downward pressing process, the pressure head moves radially outward relative to the B-plate, pulling one side of the cage outward and locking it into the B-plate, thus completing the engagement with the B-plate.

[0008] Furthermore, a thrust assembly is provided on one side of the mounting platform, which is adapted to push the retainer to move radially relative to the B piece, thereby completing the pre-positioning of the B piece and the retainer.

[0009] Furthermore, the thrust assembly includes: a cylinder fixed to one side of the mounting platform; a push block connected to the output end of the cylinder, the bottom of the push block being flush with the bottom of the cage, and a positioning groove being formed on its bottom surface facing upwards, the positioning groove forming a positioning contact with the cage; when the cylinder is actuated, the push block acts on the cage to perform linear motion until the cage engages with at least one anchor point of the inner ring of the B piece to complete the pre-positioning.

[0010] Furthermore, the pressure head assembly also includes: a mounting plate disposed at the output end of the bottom of the pressure drive assembly; a support sleeve, the top of which is connected to the mounting plate, with the upper part of the pressure head vertically located inside the support sleeve; a spring disposed between the top of the pressure head and the inner top of the support sleeve; at least two fixing pins that pass laterally through the support sleeve and engage with an obliquely opened adjustment hole on the pressure head; when the pressure drive assembly descends once, it holds the notch of the pressure head against the inner ring of the retainer; when the pressure drive assembly descends a second time, the fixing pins move from the upper limit position to the lower limit position of the adjustment hole, at which point the pressure head moves radially, pulling one side of the retainer outward; when the pressure drive assembly descends a third time, it presses down the retainer after the pressure head has pulled one side of the retainer outward, engaging the retainer with the B-piece.

[0011] Furthermore, the pressure head assembly also includes a pressure rod, which is fixedly disposed on one side of the pressure head, and an adjustment gap is provided between the pressure rod and the pressure head; when the downward pressure drive assembly moves downward for the second time, the pressure head moves radially closer to the pressure rod, and while pulling one side of the retainer outward, the bottom of the pressure rod presses down on the retainer.

[0012] Furthermore, a connecting plate is provided at the top of the pressure rod, the connecting plate is elastically connected to the mounting plate, and a pressure sensor is provided between the connecting plate and the mounting plate.

[0013] Furthermore, the pressure head assembly is slidably connected to the output end of the pressure drive assembly.

[0014] This solution also discloses a thrust bearing press-fit mechanism, including a cage mounting assembly for the thrust bearing, and further comprising: a turntable controlled by a motor to rotate, with multiple mounting platforms spaced apart on its upper surface; a fixed seat located above the center of the turntable, on which the downward pressure drive assembly and the clamping drive assembly are mounted; and a press-fit assembly located at the output end of the clamping drive assembly. When the turntable rotates to a position where the assembled B piece and the cage are below the press-fit assembly, the A piece is placed on the cage, and the clamping drive assembly drives the press-fit assembly downward to press the A piece into contact with the outer ring of the cage.

[0015] Furthermore, the pressing assembly includes: a fixed plate, which is slidably connected to the output end of the pressing drive assembly; a detection plate, which is disposed below the fixed plate and is elastically connected to the fixed plate, and a pressure sensor is disposed between the fixed plate and the detection plate; and a pressing rod, which is fixed to the bottom of the detection plate and whose bottom end acts on the upper surface of the A-piece.

[0016] Furthermore, a push block assembly is provided on the outer side of the mounting plate below the pressing drive assembly, and spinning assemblies are provided on both sides of the push block assembly; the push block assembly includes: a cylinder, which is fixed on one side corresponding to the mounting platform; and a push block, which is connected to the output end of the cylinder. The bottom of the push block is flush with the bottom of the A-piece, and a positioning groove is formed on its bottom surface facing upwards. The positioning groove and the A-piece form a positioning contact; when the cylinder is activated, the push block acts on the A-piece to perform linear motion, covering the A-piece on the retainer; the spinning assembly includes: a spinning cylinder, which is provided on the side of the cylinder; and an L-shaped spinning block, which is provided on the output end of the spinning cylinder; when the spinning cylinder is activated, the L-shaped spinning block performs spinning and cooperates with the pressing assembly to realize multi-point pressing of the A-piece.

[0017] The beneficial effects of the present invention are as follows: The present invention is a cage mounting assembly and a thrust bearing press-fitting mechanism in a thrust bearing. Through the radial movement of the press head assembly and the abutment of the thrust assembly, the automatic sliding installation of plate B and the cage is realized. Through the lifting and lowering of the pressing drive assembly and the abutment of the push block assembly, the press-fitting of plate A and the cage is realized, thus realizing the automated installation of the thrust bearing. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is an exploded view of a thrust bearing;

[0020] Figure 2 This is a schematic diagram of the cage mounting assembly in a thrust bearing;

[0021] Figure 3 This is a diagram showing the assembly of the pressure drive component and the pressure head component;

[0022] Figure 4 This is a cross-sectional view of the pressure head assembly during one downward movement in Embodiment 1;

[0023] Figure 5 This is a cross-sectional view of the downward drive component during its secondary downward movement in Embodiment 1;

[0024] Figure 6 This is a cross-sectional view of the downward drive component during three downward movements in Embodiment 1;

[0025] Figure 7 This is a cross-sectional view of the pressure head assembly in Embodiment 2;

[0026] Figure 8 This is a cross-sectional view of the pressure head assembly descending for the second time in Embodiment 2;

[0027] Figure 9 This is a schematic diagram of the thrust bearing press-fit mechanism;

[0028] Figure 10 This is a structural diagram of the press-fit assembly;

[0029] Figure 11 This is a schematic diagram of the spinning assembly;

[0030] Figure 12 This is a structural schematic diagram of the thrust assembly on one side of the mounting platform. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0032] See Figure 1 , Figure 1 The exploded view shows the thrust bearing. From bottom to top, the components are plate B 02, cage 03, and plate A 04. A vertical wall is provided at the inner ring of plate B 02, and an anchor point 021 is provided on the outer side of the vertical wall. The inner ring of cage 03 and the vertical wall of plate B are interference-fitted. The anchor point restricts the separation of cage 03 and plate B 02. The outer ring of cage 03 and the circumferential inner wall of plate A 04 are interference-fitted, realizing the assembly of thrust bearing 01.

[0033] To achieve the fit between the B-piece and the cage, this application discloses Embodiment 1 and Embodiment 2. To achieve the assembly of the thrust bearing 01, Embodiment 3 is disclosed based on Embodiment 1 or Embodiment 2, as follows:

[0034] Example 1

[0035] See Figure 2 , Figure 2 This is a schematic diagram of the cage mounting assembly in a thrust bearing. A B piece is placed on the mounting platform 2. Four anchor points are set on the inner ring of the B piece, with a 90° interval between adjacent anchor points. A pressure head assembly 3 is set directly above the two anchor points. The B piece is positioned on the mounting platform 2 through the previous process. The included angle between the two pressure head assemblies 3 is 90°. The pressure head assembly 3 is connected to the downward pressure drive assembly 6.

[0036] See Figure 12A thrust assembly 10 is installed on the left side of the mounting platform 2. A robotic arm (not shown in the figure) grips the retainer and places it on plate B. Plate B and the retainer need to be pre-positioned. At this time, the cylinder 101 in the thrust assembly 10 is activated. Since the bottom of the push block 102 is flush with the bottom of the retainer, and the bottom of the push block 102 is provided with a positioning groove 103, the push block 102 only acts on the retainer. When the push block 102 pushes the retainer, the retainer and the positioning groove 103 form a two-point positioning contact. In this way, the retainer will only follow the push block 102 to move in a straight line, and pre-position the retainer with the anchor points on plate B. At this time, the retainer is tilted on plate B. The two anchor points on plate B near the thrust assembly 10 achieve positioning with the retainer. During the installation of plate B and retainer, the thrust assembly 10 always acts on the retainer until the assembly is completed. The positioning of the remaining two anchor points with the retainer is achieved by the cooperation of the downward drive assembly 6 and the pressure head assembly 3.

[0037] See Figure 3 , Figure 3 The diagram shows the assembly of the pressure drive component 6 and the pressure head component 3. The pressure drive component 6 is a pneumatic cylinder or an electric cylinder. The output end of the pressure drive component 6 is set downward and is connected to the pressure head component 3 through a linear module. The linear module enables the pressure head component 3 to match cages with different inner diameters.

[0038] See Figure 4 , Figure 4 This is a cross-sectional view of the pressure head assembly. In the pressure head assembly 3, a support sleeve 31 is installed at the bottom of the mounting plate 35. A pressure head 32 is installed inside the support sleeve 31. A notch 33 is opened on the bottom right side of the pressure head 32. A spring 36 is installed between the top of the pressure head 32 and the inner top of the support sleeve 31. Two adjusting waist holes 34 are opened in the middle of the pressure head 32, which are arranged vertically. The adjusting waist holes 34 have a structure with the left side lower and the right side higher. A fixing pin 35 is connected to the support sleeve 31 and cooperates with the adjusting waist holes 34.

[0039] See Figure 4 When the pressure drive assembly 6 descends once, it holds the notch 33 of the pressure head 32 against the inner right ring of the cage. At this time, the pressure head 32 remains stationary under force; see also Figure 5 The downward drive assembly 6 descends for the second time, compressing the spring 36 until the fixing pin 35 moves from the upper limit position of the adjusting waist hole 34 to the lower limit position. At this time, the pressure head 32 moves to the right, pulling the right side of the retainer outward in the upper right direction. A downward gap is formed between the right side of the retainer and the corresponding anchor point due to this outward pull. See also... Figure 6 The downward drive assembly 6 descends three times, pulling the right side of the retainer outward with the pressure head 32. The entire pressure head then moves downward, pressing down on the retainer and engaging it with the anchor point on the B piece, thus assembling the B piece and the retainer.

[0040] In some undisclosed embodiments, it is known that the position and number of pressure head components 3 match the position and number of anchor points; that is, in embodiment 1, there are 4 anchor points on plate B, and two pressure head components 3 are respectively set above two adjacent anchor points; or there are 3 anchor points on plate B, and one pressure head component 3 can be set above the anchor point.

[0041] In addition, in this embodiment, the lifting motion of the pressure head 32 is converted into horizontal motion by the cooperation of the fixing pin 35 and the adjusting waist hole 34. In addition, the assembly function of the B plate and the cage can also be realized by the wedge-shaped inclined plane motion.

[0042] Example 2

[0043] Example 2 is largely the same as Example 1, the only difference being the pressure head assembly. See details below. Figure 7 In the figure, a pressure rod 38 is provided on the right side of the pressure head 32. A gap 39 is formed between the pressure rod 38 and the pressure head 32 to allow the pressure head 32 to move. A connecting plate 310 is installed on the top of the pressure rod 38. The connecting plate 310 is elastically connected to the mounting plate 37 and is equipped with a pressure sensor 44. Specifically, the connecting plate 310 is suspended below the mounting plate 37. The mounting plate 37 and the connecting plate 310 are connected by a spring. The bottom of the pressure rod 38 is flush with the top plane of the notch 33 at the bottom of the pressure head 32.

[0044] See Figure 7 When the pressure drive assembly 6 descends once, it holds the notch 33 of the pressure head 32 against the inner right ring of the cage. At this time, the pressure head 32 remains stationary under force, and the bottom of the pressure rod 38 contacts the upper surface of the cage; see also Figure 8 The downward drive assembly 6 descends for the second time, compressing the spring 36 until the fixing pin 35 moves from the upper limit position of the adjusting waist hole 34 to the lower limit position. At this time, the pressure head 32 moves to the right and approaches the pressure rod 38, pulling the right side of the cage outward. Simultaneously, the pressure rod 38 follows the downward drive assembly 6 to press down the right side of the cage, engaging the cage with the anchor point on the B piece to achieve the assembly of the B piece and the cage. The pressure sensor 44 is used to detect the pressure exerted by the pressure rod 38 on the cage, preventing excessive downward pressure from causing deformation of the cage.

[0045] Compared to Example 1, the downward drive assembly 6 only needs to descend twice to install the B plate and the cage.

[0046] Example 3

[0047] This embodiment discloses a thrust bearing press-fitting mechanism; see [link / reference]. Figure 9The turntable 1 in the figure is controlled by a motor to rotate. There are four mounting platforms 2 on the turntable. The first mounting platform 21 holds the positioned B piece. When the B piece rotates to the second mounting platform 22, the anchor point on the B piece corresponds to the pressure head assembly 3. The second mounting platform 22 holds the assembly of the retainer and the B piece. The pressure head assembly 3 is located above the second mounting platform 22. The third mounting platform 23 holds the thrust bearing after the A piece is assembled. The press assembly 4 is located above the third mounting platform 23. The fourth mounting platform 24 holds the finished thrust bearing, which is convenient for the robot (not shown) to remove it later.

[0048] See Figure 9 A pressing assembly 4 is installed above the third mounting platform 23. The pressing assembly 4 and the pressing head assembly 3 are fixed on the same fixed base 5. The pressing assembly 4 is controlled to descend by the downward driving assembly 6 and acts on the upper surface of the A-piece to press the A-piece and the retaining piece together with an interference fit. A push block assembly 7 is installed on the outside of the third mounting platform 23. The push block assembly 7 has the same function as the push force assembly 8. The A-piece grasped by the robot (not shown) is placed on the retainer. The function of the push block assembly 7 is to push the A-piece to move linearly and pre-position the A-piece and the retainer. At this time, the A-piece covers the retainer. The push block assembly 7 does not retract until the A-piece and the retainer are pressed together. See also Figure 11 The push block assembly 7 is provided with spinning assemblies 9 on both sides. The spinning cylinder 91 in the spinning assembly 9 is fixed on both sides of the push block assembly 7. The L-shaped spinning block 92 is connected to the output end of the spinning cylinder 91. When the spinning cylinder 91 is started, the L-shaped spinning block 92 rotates 90° and descends, pressing the L-shaped spinning block 92 against the upper surface of the A-piece, and clamping the A-piece and the cage at two points.

[0049] See Figure 10 , Figure 10 This is a schematic diagram of the press-fit assembly. In the diagram, the fixed plate 41 is slidably connected to the output end of the pressing drive assembly 6 via a linear module, which allows adjustment of the position of the press-fit assembly 4 so that the press-fit rod 42 contacts A-pieces of different diameters. The detection plate 43 of the press-fit assembly 4 is elastically connected to the fixed plate 41, and a pressure sensor 44 is installed between them. Specifically, the detection plate 43 is suspended below the fixed plate 41, and the detection plate 43 and the fixed plate 41 are connected by a spring. The top of the press-fit rod 42 is connected to the detection plate 43, and the bottom of the press-fit rod 42 contacts the upper surface of the A-piece. Under the drive of the pressing drive assembly 6, two-point press-fitting of the A-piece and the cage is achieved. In summary, the operation of the press-fit assembly 4 and the spinning assembly 9 realizes multi-point press-fitting of the A-piece and the cage, achieving automated press-fitting of the thrust bearing.

[0050] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cage mounting assembly in a thrust bearing, characterized in that, include: The mounting table holds the B-piece and the pre-positioned retainer. A downward drive assembly is disposed above the mounting platform and is positioned corresponding to the anchor point at the inner ring of the B piece. And a pressure head assembly, which is disposed at the output end at the bottom of the pressure drive assembly; The pressure head in the pressure head assembly is elastically connected to the pressure head assembly, and its bottom is provided with a notch to abut against the inner ring of the cage. The downward pressure drive assembly drives the pressure head downward. During the downward pressure process, the pressure head moves radially outward relative to the B piece, pulling one side of the cage outward and locking it into the B piece, thus completing the engagement with the B piece. The pressure head assembly also includes: A mounting plate is disposed at the output end of the bottom of the pressure drive assembly; A support sleeve, the top of which is connected to the mounting plate, and the upper part of the pressure head is vertically located inside the support sleeve; A spring is disposed between the top of the pressure head and the inner top of the support sleeve; At least two fixing pins pass laterally through the support sleeve and engage with the adjusting waist hole obliquely opened on the pressure head; When the downward driving assembly descends once, it presses the notch of the pressure head against the inner ring of the cage; when the downward driving assembly descends a second time, the fixing pin moves from the upper limit position of the adjusting waist hole to the lower limit position, at which point the pressure head moves radially, pulling one side of the cage outward; when the downward driving assembly descends a third time, it presses the cage down after the pressure head has pulled one side of the cage outward, engaging the cage with the B piece.

2. The cage mounting assembly in the thrust bearing according to claim 1, characterized in that, A thrust assembly is provided on one side of the mounting platform, which is adapted to push the retainer to move radially relative to the B piece, thereby completing the pre-positioning of the B piece and the retainer.

3. The cage mounting assembly in the thrust bearing according to claim 2, characterized in that, The thrust assembly includes: A cylinder, which is fixed to one side of the mounting platform; A push block is connected to the output end of the cylinder. The bottom of the push block is flush with the bottom of the cage. A positioning groove is formed on the bottom surface of the push block, and a positioning contact is formed between the positioning groove and the cage. When the cylinder is activated, the pusher acts on the retainer to move linearly until the retainer engages with at least one anchor point of the inner ring of the B piece to complete the pre-positioning.

4. The cage mounting assembly in the thrust bearing according to claim 1, characterized in that, The pressure head assembly also includes: A pressure rod is fixedly mounted on one side of the pressure head, and an adjustment gap is provided between the pressure rod and the pressure head; When the downward driving assembly moves downward for the second time, the pressure head moves radially closer to the pressure rod, pulling one side of the retainer outward while the bottom of the pressure rod presses down on the retainer.

5. The cage mounting assembly in the thrust bearing according to claim 4, characterized in that, A connecting plate is provided at the top of the pressure rod, and the connecting plate is elastically connected to the mounting plate. A pressure sensor is provided between the connecting plate and the mounting plate.

6. The cage mounting assembly in the thrust bearing according to claim 1, characterized in that, The pressure head assembly is slidably connected to the output end of the pressure drive assembly.

7. A thrust bearing press-fitting mechanism, comprising the cage mounting assembly in a thrust bearing as described in any one of claims 1-6, characterized in that, Also includes: The turntable is controlled by a motor to rotate, and its upper surface is equipped with multiple mounting platforms at intervals. A fixed base is disposed above the center of the turntable, and the pressing drive assembly and the clamping drive assembly are disposed thereon; A press-fitting assembly is disposed at the output end of the press-fitting drive assembly; When the turntable rotates to the point where the assembled B piece and the retainer are located below the pressing assembly, the A piece is placed on the retainer, and the pressing drive assembly drives the pressing assembly downward to press the A piece into contact with the outer ring of the retainer.

8. The thrust bearing press-fitting mechanism according to claim 7, characterized in that, The press-fit assembly includes: A fixed plate is slidably connected to the output end of the clamping drive assembly; A detection plate is disposed below the fixed plate and is elastically connected to the fixed plate. A pressure sensor is disposed between the fixed plate and the detection plate. A pressing rod is fixed to the bottom of the detection plate, with one end of its bottom acting on the upper surface of the A-piece.

9. The thrust bearing press-fitting mechanism according to claim 7, characterized in that, A push block assembly is provided on the outer side of the mounting plate below the clamping drive assembly, and a spinning assembly is provided on both sides of the push block assembly. The pusher assembly includes: A cylinder, which is fixed to one side of the mounting platform; And a push block, which is connected to the output end of the cylinder. The bottom of the push block is flush with the bottom of the A piece, and a positioning groove is provided on its bottom surface facing upward. The positioning groove and the A piece form a positioning contact. When the cylinder is activated, the pusher acts on the A-piece to move linearly, covering the A-piece onto the retainer; The spinning assembly includes: A spinning cylinder, which is disposed on the side of the cylinder; And an L-shaped spinning block, which is disposed at the output end of the spinning cylinder; When the spinning cylinder is working, the L-shaped spinning block performs spinning and then cooperates with the pressing assembly to achieve multi-point pressing of the A-piece.

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