Mounting assembly for retainer in thrust bearing and thrust bearing press-fitting mechanism

Abstract

The invention relates to a retainer mounting assembly in a thrust bearing and a thrust bearing press-fitting mechanism, and the retainer mounting assembly comprises a mounting table on which a B sheet and a pre-positioned retainer are placed; the downward pressing driving assembly is arranged above the mounting table and corresponds to an anchor point at the inner ring of the B piece; the pressing head assembly is arranged at the output end of the bottom of the downward pressing driving assembly; a pressing head in the pressing head assembly is elastically connected with the pressing head assembly, a notch abutting against the inner ring of the retainer is formed in the bottom of the pressing head, the pressing driving assembly drives the pressing head to move downwards, the pressing head moves outwards in the radial direction relative to a piece B in the pressing process, and one side of the retainer is pulled outwards and then clamped into the piece B to be matched with the piece B; through radial movement of the pressing head assembly and abutting of the thrust assembly, automatic sliding installation of the B plate and the retainer is achieved, through lifting of the pressing driving assembly and abutting of the push block assembly, press fitting of the A plate and the retainer is achieved, and automatic installation of the thrust bearing is achieved.

Description

Technical Field

[0001] The invention relates to a thrust bearing press-fitting mechanism, in particular to a retainer mounting assembly in a thrust bearing and a thrust bearing press-fitting mechanism. Background Art

[0002] The thrust bearing consists of piece A (seat ring), piece B (shaft ring), cage and roller. When installing the thrust bearing, the roller is usually installed in the cage first. After the cage is matched with piece B, it is press-fitted with piece A. The inner ring of piece B is provided with a protruding anchor point. The inner ring of the cage cooperates with the anchor point to limit the separation of the cage and piece B. Then the outer ring of the cage is interference fit with the circumferential inner wall of piece A to realize the assembly of the thrust bearing.

[0003] The traditional assembly method is manual assembly, which is time-consuming and labor-intensive. In particular, when matching the retainer with the B-piece, a certain amount of effort is required to complete the assembly.

[0004] In summary, how to realize the automated assembly of the cage and the B-plate and the automated assembly of the thrust bearing has become an urgent problem that researchers in this field need to solve. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to realize the automated assembly of the retainer and the B plate and the automated assembly of the thrust bearing;

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] The present invention is a retainer mounting assembly in a thrust bearing, comprising: a mounting platform, on which a B-piece and a pre-positioned retainer are placed; a downward pressing drive assembly, which is arranged above the mounting platform and corresponds to the anchor point at the inner ring of the B-piece; and a pressure head assembly, which is arranged at the output end at the bottom of the downward pressing drive assembly; the pressure head in the pressure head assembly is elastically connected to the pressure head assembly, and a notch is provided at the bottom thereof to support the inner ring of the retainer, and the downward pressing drive assembly drives the pressure head downward, and during the downward pressing process, the pressure head moves radially outward relative to the B-piece, pulling one side of the retainer outward and then snapping it into the B-piece, thereby completing cooperation with the B-piece.

[0008] Furthermore, a thrust assembly is provided on an outer side of the mounting platform, which is suitable for pushing the retaining frame to move radially relative to the B piece, thereby completing the pre-positioning of the B piece and the retaining frame.

[0009] Furthermore, the thrust assembly includes: a cylinder, which is fixed on one side of the mounting platform; 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 retaining frame, and a positioning groove is provided on the bottom surface upward, and a positioning contact is formed between the positioning groove and the retaining frame; when the cylinder is actuated, the push block acts on the retaining frame to perform linear motion until the retaining frame cooperates with at least one anchor point of the inner ring of the B plate to complete pre-positioning.

[0010] Furthermore, the pressure head assembly also includes: a mounting plate, which is arranged at the output end at the bottom of the downward 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 in the support sleeve; a spring, which is arranged between the top of the pressure head and the top of the support sleeve; at least two fixing pins, which pass through the support sleeve horizontally and cooperate with the adjustment waist hole obliquely opened on the pressure head; when the downward pressure drive assembly descends once, the notch of the pressure head is pressed against the inner ring of the retaining frame; the downward pressure drive assembly descends twice until the fixing pin moves from the upper limit position of the adjustment waist hole to the lower limit position, at which time the pressure head moves radially, pulling one side of the retaining frame outward; the downward pressure drive assembly descends three times, pressing down the retaining frame after the pressure head pulls one side of the retaining frame outward, and engaging the retaining frame with the B piece.

[0011] Furthermore, the pressure head assembly also includes: a pressure rod, which is fixedly arranged on one side of the pressure head, and an adjustable gap is set between it and the pressure head; when the downward pressure drive assembly descends for the second time, the pressure head moves radially close to the pressure rod, pulling one side of the retaining frame outward while the bottom of the pressure rod presses down the retaining frame.

[0012] Furthermore, a connecting plate is provided on 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 connected to the output end of the pressure drive assembly in a sliding manner.

[0014] The present solution also discloses a thrust bearing press-fitting mechanism, including a retainer mounting assembly in a thrust bearing, and further including: a turntable, which is controlled to rotate by a motor, and a plurality of mounting platforms are arranged at intervals on its upper surface; a fixed seat, which is arranged above the middle of the turntable, and on which the downward pressing drive assembly and the clamping drive assembly are arranged; a press-fitting assembly, which is arranged at the output end of the clamping drive assembly; when the turntable rotates until the assembled B piece and retainer are located below the press-fitting assembly, the A piece is placed on the retainer, and the clamping drive assembly drives the press-fitting assembly downward to press-fit the A piece with the outer ring of the retainer.

[0015] Furthermore, the press-fitting assembly includes: a fixed plate, which is slidingly connected to the output end of the clamping drive assembly; a detection plate, which is arranged below the fixed plate and is elastically connected to the fixed plate, and a pressure sensor is arranged between the fixed plate and the detection plate; a press-fitting rod, which is fixed to the bottom of the detection plate, and one end of its bottom acts on the upper surface of the A sheet.

[0016] Furthermore, a push block assembly is provided on the outside of the mounting plate below the clamping 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 provided on its bottom surface upward, and a positioning contact is formed between the positioning groove and the A-piece; when the cylinder is actuated, the push block acts on the A-piece to perform a linear motion, covering the A-piece on the retaining frame; the spinning assembly includes: a spinning cylinder, which is arranged on the side of the cylinder; and an L-shaped spinning block, which is arranged at the output end of the spinning cylinder; when the spinning cylinder is working, the L-shaped spinning block is spun and then cooperates with the press-fitting assembly to achieve multi-point press-fitting of the A-piece.

[0017] Beneficial effects of the present invention: The present invention is a retainer installation assembly and a thrust bearing press-fitting mechanism in a thrust bearing. Through the radial movement of the pressure head assembly and the support of the thrust assembly, the automatic sliding installation of the B plate and the retainer is realized. Through the lifting and lowering of the pressing drive assembly and the support of the push block assembly, the press-fitting of the A plate and the retainer is realized, thereby realizing the automated installation of the thrust bearing. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0021] Figure 3 This is the coordination diagram of the downward pressure drive assembly and the pressure head assembly;

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

[0023] Figure 5 is a cross-sectional view of the downward pressure drive assembly in Example 1 during the second downward movement;

[0024] Figure 6 is a cross-sectional view of the downward pressure drive assembly in Example 1 after three downward movements;

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

[0026] Figure 8 is a cross-sectional view of the pressure head assembly during the second downward movement in Example 2;

[0027] Figure 9 It is a structural diagram of the thrust bearing press-fitting mechanism;

[0028] Figure 10 It is a schematic diagram of the structure of the press-fit assembly;

[0029] Figure 11 It is a structural diagram of the spinning component;

[0030] Figure 12 It is a structural diagram of the thrust assembly on one side of the mounting platform. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0032] See also Figure 1 , Figure 1 This is an exploded view of the thrust bearing, which shows, from bottom to top, B-piece 02, retainer 03, and A-piece 04. A vertical wall is set at the inner ring of B-piece 02, and an anchor point 021 is set on the outside of the vertical wall. The inner ring of retainer 03 and the vertical wall of B-piece are interference fit, and the anchor point restricts the separation of retainer 03 and B-piece 02; the outer ring of retainer 03 and the circumferential inner wall of A-piece 04 are interference fit, realizing the assembly of thrust bearing 01.

[0033] In order to achieve the matching of the B plate and the retainer, this application discloses Example 1 and Example 2. In order to achieve the assembly of the thrust bearing 01, based on Example 1 or Example 2, Example 3 is disclosed, which is specifically as follows:

[0034] Example 1

[0035] See also Figure 2 , Figure 2 It is a structural diagram of the retainer mounting assembly in the thrust bearing; a B plate is placed on the mounting table 2, and four anchor points are set on the inner ring of the B plate, with an interval of 90° between two adjacent anchor points. A pressure head assembly 3 is set directly above the two anchor points. The positioning of the B plate on the mounting table 2 is achieved through the previous process. The angle between the two pressure head assemblies 3 is 90°, and the pressure head assembly 3 is connected to the downward pressure drive assembly 6.

[0036] See also Figure 12, a thrust assembly 10 is provided on the left side of the mounting table 2, and the manipulator (not shown in the figure) grabs the retaining frame and places it on the B piece. The B piece and the retaining frame need to be pre-positioned. At this time, the cylinder 101 in the thrust assembly 10 is started. Since the bottom of the push block 102 is flush with the bottom of the retaining frame, a positioning groove 103 is provided at the bottom of the push block 102, so the push block 102 only acts on the retaining frame, and when the push block 102 pushes the retaining frame, a two-point positioning contact is formed between the retaining frame and the positioning groove 103, so that the retaining frame will only follow the push block 102 for linear motion, and the retaining frame is pre-positioned with the anchor point on the B piece. At this time, the retaining frame is tilted and placed on the B piece. The two anchor points on the B piece near the thrust assembly 10 realize the positioning with the retaining frame. During the installation process of the B piece and the retaining frame, the thrust assembly 10 always acts on the retaining frame until the assembly is completed. The positioning of the remaining two anchor points and the retaining frame is achieved by the cooperation of the downward pressing drive assembly 6 and the pressure head assembly 3.

[0037] See also Figure 3 , Figure 3 This is a matching diagram of the downward pressure drive assembly 6 and the pressure head assembly 3. In the figure, the downward pressure drive assembly 6 adopts a cylinder or an electric cylinder. The output end of the downward pressure drive assembly 6 is set downward and is slidably connected to the pressure head assembly 3 through a linear module. The linear module enables the pressure head assembly 3 to match retaining frames with different inner diameters.

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

[0039] See also Figure 4 , the pressing drive assembly 6 moves downward once, and the notch 33 of the pressing head 32 is pressed against the inner ring of the right side of the retainer. At this time, the pressing head 32 is forced to remain stationary; see Figure 5 , the downward driving assembly 6 moves downward for the second time, the spring 36 is compressed, and the fixing pin 35 moves from the upper limit position of the adjustment waist hole 34 to the lower limit position. At this time, the pressure head 32 moves to the right, pulling the right part of the retainer outward in the upper right direction. At this time, a downward pressure gap is formed between the right part of the retainer and the corresponding anchor point due to the outward pull; see Figure 6 , the pressing drive assembly 6 moves downward three times, and after the pressing head 32 pulls the right side of the retainer outward, the pressing head moves downward as a whole, pressing the retainer, and matching the retainer with the anchor point on the B piece to realize the assembly of the B piece and the retainer.

[0040] In some undisclosed embodiments, it can be seen that the position and number of the pressure head assembly 3 match the position and number of the anchor points; that is, in Example 1, four anchor points are set on the B plate, and two pressure head assemblies 3 are correspondingly set above two adjacent anchor points; or three anchor points are set on the B plate, and one pressure head assembly 3 can be set correspondingly above the anchor points.

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

[0042] Example 2

[0043] Example 2 is similar to Example 1, except for the pressure head assembly. Figure 7 In the figure, a pressure rod 38 is set on the right side of the pressure head 32, and a gap 39 is formed between the pressure rod 38 and the pressure head 32 for 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 provided with a pressure sensor 44. Specifically, the connecting plate 310 is suspended below the mounting plate 37, and the mounting plate 37 and the connecting plate 310 are spring-connected. 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 also Figure 7 , when the pressing drive assembly 6 moves downward once, the notch 33 of the pressing head 32 is pressed against the inner ring of the right side of the retainer. At this time, the pressing head 32 is forced to remain stationary, and the bottom of the pressing rod 38 contacts the upper surface of the retainer; see Figure 8 , the downward driving assembly 6 moves downward for the second time, and the spring is compressed 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 part of the retaining frame outward. At the same time, the pressure rod 38 follows the downward driving assembly 6 to press the right part of the retaining frame, and the retaining frame cooperates with the anchor point on the B piece to realize the assembly of the B piece and the retaining frame; the pressure sensor 44 is used to detect the pressure of the pressure rod 38 on the retaining frame to avoid excessive downward pressure causing deformation of the retaining frame.

[0045] Compared with the embodiment 1, the downward driving assembly 6 only needs to move downward twice to achieve the installation of the B piece and the retaining frame.

[0046] Example 3

[0047] This embodiment discloses a thrust bearing press-fitting mechanism, see Figure 9The turntable 1 in the figure is controlled by a motor to rotate, and four mounting platforms 2 are provided on the turntable, among which the positioned B piece is placed on the first mounting platform 21. When the B piece on the first mounting platform 2 rotates to the second mounting platform 22, the anchor point on the B piece corresponds to the pressure head assembly 3; the assembly after the retaining frame and the B piece is placed on the second mounting platform 22, and the pressure head assembly 3 is arranged above the second mounting platform 22; the thrust bearing after the A piece is assembled is placed on the third mounting platform 23, and the press-fitting assembly 4 is arranged above the third mounting platform 23; the finished thrust bearing is placed on the fourth mounting platform 24, which is convenient for subsequent removal by a robot (not shown).

[0048] See also Figure 9 , a press-fitting assembly 4 is provided above the third mounting platform 23, and the press-fitting assembly 4 and the pressure head assembly 3 are fixed on the same fixing seat 5. The press-fitting assembly 4 is controlled to descend by the downward pressing driving assembly 6 and acts on the upper surface of the A piece to press the A piece and the holding piece together to achieve interference fit; a push block assembly 7 is provided on the outer side of the third mounting platform 23, and the function of the push block assembly 7 is the same as that of the thrust assembly 8. The A piece grabbed by the manipulator (not shown) is placed on the holding frame. The function of the push block assembly 7 is to push the A piece to move linearly to pre-position the A piece and the holding frame. At this time, the A piece covers the holding frame, and the push block assembly 7 does not retract until the A piece and the holding piece are pressed together; see Figure 11 , spinning assemblies 9 are provided on both sides of the push block assembly 7, and the spinning cylinders 91 in the spinning assembly 9 are fixed on both sides of the push block assembly 7, and the L-shaped spinning block 92 is connected to the output end of the spinning cylinder 91. In this way, when the spinning cylinder 91 is started, the L-shaped spinning block 92 rotates 90° and descends at the same time, and the L-shaped spinning block 92 is abutted against the upper surface of the A piece, and the A piece and the retaining frame are pressed together at two points.

[0049] See also Figure 10 , Figure 10 It is a structural schematic diagram of the press-fitting assembly. In the figure, the fixed plate 41 is slidably connected to the output end of the downward pressure drive assembly 6 through a linear module, so that the position of the press-fitting assembly 4 can be adjusted so that the press-fitting rod 42 contacts with pieces A of different diameters; the detection plate 43 of the press-fitting assembly 4 is elastically connected to the fixed plate 41, and a pressure sensor 44 is provided between the two. 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-fitting rod 42 is connected to the detection plate 43, and the bottom of the press-fitting rod 42 contacts with the upper surface of the A piece. Under the drive of the downward pressure drive assembly 6, two-point press-fitting of the A piece and the retaining frame is realized; in summary, the work of the press-fitting assembly 4 and the spinning assembly 9 realizes multi-point press-fitting of the A piece and the retaining frame, and realizes the automated press-fitting of the thrust bearing.

[0050] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. The retainer mounting assembly in the thrust bearing is characterized by: include: A mounting table on which the B piece and the pre-positioned retainer are placed; A downward driving assembly is provided above the mounting platform and is arranged corresponding to the anchor point on the inner circle of the B plate; and a pressure head assembly, which is arranged at the output end of the bottom of the downward pressure drive assembly; The pressure head in the pressure head assembly is elastically connected to the pressure head assembly, and a notch is provided at the bottom thereof to support the inner ring of the retaining frame. The downward pressing drive assembly drives the pressure head downward. During the downward pressing process, the pressure head moves radially outward relative to the B piece, pulling one side of the retaining frame outward and snapping it into the B piece to complete the cooperation with the B piece.

2. The retainer mounting assembly in the thrust bearing according to claim 1, characterized in that: A thrust assembly is provided on an outer side of the mounting platform, which is suitable for pushing the retaining frame to move radially relative to the B piece, thereby completing the pre-positioning of the B piece and the retaining frame.

3. The retainer mounting assembly in the thrust bearing according to claim 2, characterized in that: The thrust assembly comprises: a cylinder fixed to one side of the mounting platform; A push block connected to the output end of the cylinder, wherein the bottom of the push block is flush with the bottom of the retaining frame, and a positioning groove is provided on the bottom surface thereof upwards, and a positioning contact is formed between the positioning groove and the retaining frame; When the cylinder is actuated, the push block acts on the retaining frame to perform linear motion until the retaining frame cooperates with at least one anchor point of the inner ring of the B plate to complete pre-positioning.

4. The retainer mounting assembly for a thrust bearing according to claim 1, wherein: The pressure head assembly also includes: A mounting plate, which is arranged at the output end of the bottom of the downward driving 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 in the support sleeve; A spring is provided between the top of the pressure head and the inner top of the support sleeve; At least two fixing pins, which pass through the support sleeve transversely and cooperate with the adjusting waist holes obliquely opened on the pressure head; When the downward-pressing driving assembly descends once, the notch of the pressure head is pressed against the inner ring of the retaining frame; the downward-pressing driving assembly descends twice until the fixing pin moves from the upper limit position of the adjusting waist hole to the lower limit position, at which time the pressure head moves radially to pull one side of the retaining frame outward; the downward-pressing driving assembly descends three times, pressing down the retaining frame after the pressure head has pulled one side of the retaining frame outward, and fitting the retaining frame with the B piece.

5. The retainer mounting assembly for a thrust bearing according to claim 4, characterized in that: The pressure head assembly also includes: A pressure rod is fixedly arranged on one side of the pressure head, and an adjustable gap is set between the pressure rod and the pressure head; When the pressing drive assembly moves downward for the second time, the pressing head moves radially close to the pressing rod, pulling one side of the retaining frame outward while the bottom of the pressing rod presses down the retaining frame.

6. The retainer mounting assembly for a thrust bearing according to claim 5, characterized in that: A connecting plate is provided on 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.

7. The retainer mounting assembly in a thrust bearing according to claim 1, characterized in that: The pressure head assembly is connected to the output end of the pressure drive assembly in a sliding manner.

8. A thrust bearing press-fitting mechanism, comprising the thrust bearing retainer mounting assembly according to any one of claims 1 to 7, characterized in that: Also includes: A turntable, which is controlled to rotate by a motor, and has a plurality of mounting platforms arranged at intervals on its upper surface; A fixed seat, which is arranged above the middle of the turntable, and on which the pressing drive assembly and the pressing drive assembly are arranged; A press-fit assembly, which is arranged at the output end of the pressing drive assembly; When the turntable rotates until the assembled B piece and retaining frame are located below the press-fitting assembly, the A piece is placed on the retaining frame, and the pressing drive assembly drives the press-fitting assembly downward to press-fit the A piece onto the outer ring of the retaining frame.

9. The thrust bearing press-fitting mechanism according to claim 8, characterized in that: The press-fit assembly comprises: A fixed plate, which is slidably connected to the output end of the compaction drive assembly; a detection plate, which is arranged below the fixing plate and is elastically connected to the fixing plate, and a pressure sensor is arranged between the fixing plate and the detection plate; A pressing rod is fixed to the bottom of the detection plate, and one end of the bottom acts on the upper surface of the A sheet.

10. The thrust bearing press-fitting mechanism according to claim 8, characterized in that: A push block assembly is provided on the outer side of the mounting plate below the compacting drive assembly, and spinning assemblies are provided on both sides of the push block assembly; The push block assembly comprises: A cylinder fixed on one side corresponding to the mounting platform; and a push block connected to the output end of the cylinder, wherein the bottom of the push block is flush with the bottom of the A piece, and a positioning groove is opened upward on the bottom surface of the push block, and a positioning contact is formed between the positioning groove and the A piece; When the cylinder is in motion, the push block acts on the A-piece to perform linear motion, so that the A-piece is covered on the retaining frame; The spinning assembly comprises: a spinning cylinder, which is arranged on the side of the cylinder; and an L-shaped spinning block, which is arranged at the output end of the spinning cylinder; When the spinning cylinder is working, the L-shaped spinning block is spun and then cooperates with the press-fitting assembly to achieve multi-point press-fitting of the A sheet.

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