An eight-hole cage compression test fixture

Abstract

The present invention discloses an eight-hole cage compression test fixture device, which relates to the field of bearing technology, including a bottom plate, a top plate, a positioning module, a cage and a positioning pin. The upper part of the bottom plate is connected to a plurality of lower tooth plates, the lower part of the top plate is connected to a plurality of upper tooth plates, the positioning module is arranged on the upper part of the bottom plate, the cage sleeve is arranged on the outside of the positioning module, the positioning pin is inserted into the inside of each lower tooth plate and the upper tooth plate, and the end of the positioning pin extends to the inside of the positioning hole. The eight-hole cage compression test fixture device can be used when the bearing cage is subjected to a compression test. With the fixture device, on the one hand, the safety can be greatly improved, and the splashes of the cage at the moment of disintegration will not spread outward. On the other hand, it can play an effect on the positioning of the cage before being compressed, so that the pressure applied by the main shaft is uniform on each part of the cage, thereby improving the reliability of the test data and results.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, in particular to a compression test fixture device for an eight-hole retainer. Background Art

[0002] Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element and cage. The cage of rolling bearings plays an important role in resisting load pressure, so it is necessary to perform compression test on the cage of rolling bearings.

[0003] The compression test of bearing cages is an important step in evaluating the performance of bearing cages when subjected to external pressure. Firstly, it can evaluate the compression resistance of bearing cages under specific pressure, and secondly, it can determine whether the cages will be deformed or damaged when subjected to pressure, thereby verifying whether the material and structure of the cages meet the design requirements.

[0004] In the prior art, when a bearing retainer is subjected to a compression test, the retainer to be tested is usually placed directly under the main shaft of the compression testing machine. The main shaft presses down the retainer and applies a set pressure. This method of directly placing the retainer under the main shaft for testing has great safety hazards. Because the pressure applied by the main shaft is huge, when the retainer reaches the critical value of the compression, its structure will be instantly disintegrated, and the splashing structure will diffuse without directionality and carry a huge impact force. This is one reason. Secondly, the retainer cannot be positioned in this way. The position where the main shaft presses down can easily cause uneven force on the retainer, affecting the test results. Therefore, we propose a retainer compression test tooling device. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an eight-hole retainer compression test fixture device, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an eight-hole cage compression test fixture device, comprising:

[0007] A bottom plate, the bottom plate is installed on the test station of the compression testing machine, and a plurality of lower tooth plates are connected to the upper part of the bottom plate;

[0008] A top plate, the top plate is mounted on the lower pressure spindle of the compression testing machine, and a plurality of upper tooth plates are connected to the lower part of the top plate;

[0009] A positioning module, which is arranged on the upper part of the bottom plate and has an adjustable outline;

[0010] A retainer, the retainer is sleeved on the outside of the positioning module, and a plurality of positioning holes are reserved around the retainer;

[0011] A positioning pin is inserted into each lower tooth plate and each upper tooth plate, and the end of the positioning pin extends to the inside of the positioning hole.

[0012] Furthermore, a plurality of the lower tooth plates and upper tooth plates are alternately distributed to form a ring structure, and reserved spaces exist between the plurality of lower tooth plates and upper tooth plates and the corresponding top plate and bottom plate.

[0013] Furthermore, the structures of the bottom plate and the top plate are the same, a plurality of reserved holes are arranged through the inside of the bottom plate, and a threaded hole one is reserved on the side of the bottom plate, the threaded hole one is connected to the reserved hole, and the lower tooth plate is fixed inside the reserved hole by fastening bolts.

[0014] Furthermore, the structures of the lower tooth plate and the upper tooth plate are the same. The lower tooth plate includes an arc-shaped plate inserted in the reserved hole. The upper part of the arc-shaped plate is penetrated by a socket one, and the lower part is penetrated by a socket two. When passing through the lower tooth plate and the upper tooth plate, the positioning pin will be inserted into the inside of the socket one, and the socket two is connected to the threaded hole one.

[0015] Furthermore, the positioning module includes a plurality of linear guide rails installed on the upper part of the base plate, a four-way adjustment mechanism installed on the upper part of the base plate and located inside the plurality of linear guide rails, the upper part of each linear guide rail is slidably connected with a push plate, and a threaded hole two is reserved inside each push plate.

[0016] Furthermore, a guide groove is reserved at the bottom of the push plate, the linear guide rail is located inside the guide groove, and the linear guide rail and the guide groove are both matched "cross" structures.

[0017] Furthermore, the four-way adjustment mechanism includes a bearing seat installed on the upper part of the base plate, the interior of the bearing seat is rotatably connected to a driving rod, a hand wheel is installed on the top of the driving rod, and a driving tooth is fixedly installed on the outside of the driving rod.

[0018] Furthermore, the four-way adjustment mechanism also includes a plurality of seat bodies installed on the upper part of the base plate, the upper part of each seat body is rotatably connected to a driven screw, and each driven screw is installed with a driven tooth at the non-threaded end facing the driving tooth, and the driving tooth is meshed with a plurality of driven teeth.

[0019] Furthermore, the seat body and the driven screw are rotatably connected via a bearing, and the threaded end of the driven screw extends into the interior of the second threaded hole.

[0020] Furthermore, the positioning pin includes a column portion located inside the second socket, the outer end of the column portion is integrally connected to the limiting portion, and the inner end is integrally connected to the positioning constraint portion, the positioning constraint portion is adapted to the positioning hole and both are flat in shape, and the column portion is adapted to the second socket and both are circular in structure.

[0021] The present invention provides an eight-hole cage compression test fixture device. Compared with the prior art, it has the following beneficial effects:

[0022] 1. The eight-hole cage compression test fixture can be used when the bearing cage is subjected to compression test. With this fixture, on the one hand, the safety can be greatly improved, and the splashes of the cage at the moment of disintegration will not spread outward; on the other hand, it can play an effect on the positioning of the cage before being compressed, so that the pressure applied by the main shaft is uniform on each part of the cage, thereby improving the reliability of the test data and results.

[0023] 2. The positioning module of the eight-hole cage compression test fixture can not only position the cage, but also be adjusted according to the specifications, i.e., size, of the cage, thereby enabling the fixture to cope with cages of any specifications and sizes, with stronger adaptability and better functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the assembly structure of the present invention;

[0025] Figure 2 It is a top view of the present invention in an assembled state;

[0026] Figure 3 It is a schematic diagram of the splitting of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the bottom plate and the lower tooth plate of the present invention;

[0028] Figure 5 This is a schematic diagram of the disassembly of the positioning module in the present invention;

[0029] Figure 6 It is a schematic diagram of the assembly of the positioning module in the present invention;

[0030] Figure 7 It is a structural schematic diagram of the four-way adjustment mechanism in the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the retainer in the present invention;

[0032] Fig. 9 It is a schematic diagram of the structure of the positioning pin in the present invention;

[0033] Fig.10 It is a half-section view after the present invention is assembled.

[0034] In the figure: 1. bottom plate; 11. reserved hole; 12. threaded hole 1; 13. fastening bolt; 2. top plate; 3. lower tooth plate; 31. arc plate; 32. socket 1; 33. socket 2; 4. upper tooth plate; 5. positioning module; 51. linear guide; 52. push plate; 53. guide groove; 54. threaded hole 2; 55. four-way adjustment mechanism; 551. bearing seat; 552. driving rod; 553. hand wheel; 554. driving tooth; 555. seat body; 556. driven screw; 557. driven tooth; 558. bearing; 6. retaining frame; 61. positioning hole; 7. positioning pin; 71. column part; 72. limit part; 73. positioning constraint part; 8. reserved space. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1 , 2 , 3, 4, 8, the present invention provides a technical solution: an eight-hole retainer compression test fixture device, mainly composed of a bottom plate 1, a top plate 2, a lower tooth plate 3, an upper tooth plate 4, a positioning module 5 and a positioning pin 7, wherein, when the retainer 6 is subjected to a compression test, the bottom plate 1 is first installed on the test station of the compression test machine, and the top plate 2 is installed on the lower pressure spindle of the compression test machine, and four lower tooth plates 3 and four upper tooth plates 4 are respectively installed on the edges of the adjacent surfaces of the bottom plate 1 and the top plate 2, and the four lower tooth plates 3 and the four upper tooth plates 4 are annular The positioning module 5 is arranged alternately on the bottom plate 1 and is located in the inner layer of the annular structure formed by the four lower tooth plates 3 and the four upper tooth plates 4. The retainer 6 is placed between the annular structure and the positioning module 5. The four lower tooth plates 3 and the four upper tooth plates 4 are provided with a socket 32 ​​in advance, and the retainer 6 itself has eight positioning holes 61. Therefore, when fixing the retainer 6, it is only necessary to insert a positioning pin 7 into each socket 32 ​​and insert the end of the positioning pin 7 into the positioning hole 61.

[0037] After the locating pins 7 are inserted, a reserved space 8 is left between the four lower tooth plates 3 and the top plate 2. Similarly, a reserved space 8 is also left between the four upper tooth plates 4 and the bottom plate 1. The two reserved spaces 8 have the same size. When the main shaft of the compression tester presses down, the four locating pins 7 inserted in the four upper tooth plates 4 will synchronously apply downward pressure to the retaining frame 6 with the help of the locating holes 61. Under the constraint of the reaction force, the four locating pins 7 inserted in the four lower tooth plates 3 will also synchronously apply an upward force to the retaining frame 6 with the help of the locating holes 61. In this way, an upper and lower force will be formed, and the force will continue to increase as the main shaft of the compression tester is continuously pressed down until the retaining frame 6 reaches the critical value of the compression resistance and is destroyed, and the test can be completed. The reserved space 8 is to give the lower tooth plate 3 and the upper tooth plate 4 displacement margin when the retaining frame 6 structure is destroyed;

[0038] See also Figure 5 , 6, 7, the positioning module 5 provided includes a plurality of linear guide rails 51 installed on the upper part of the base plate 1, and a four-way adjustment mechanism 55 installed on the upper part of the base plate 1 and located inside the plurality of linear guide rails 51, and the upper part of each linear guide rail 51 is slidably connected with a push plate 52 (a guide groove 53 is reserved at the bottom of the push plate 52, the linear guide rail 51 is located inside the guide groove 53, and the linear guide rail 51 and the guide groove 53 are both adapted "cross" structures), and a threaded groove is reserved inside each push plate 52 Hole 2 54, the four-way adjustment mechanism 55 can simultaneously drive the four push plates 52 to move on the four linear guide rails 51. Specifically, when driving, the four-way adjustment mechanism 55 includes a bearing seat 551 installed on the upper part of the base plate 1 and four seat bodies 555. The inner part of the bearing seat 551 is rotatably connected to the driving rod 552, the top of the driving rod 552 is installed with a hand wheel 553, and the outer part of the driving rod 552 is fixedly installed with a driving tooth 554. The upper part of each seat body 555 is rotatably connected to a driven screw 556. The non-threaded end of the driven screw 556 facing the driving tooth 554 is equipped with a driven tooth 557, and the driving tooth 554 is meshed with the four driven teeth 557. The seat body 555 and the driven screw 556 are rotatably connected through the bearing 558. The threaded end of the driven screw 556 extends to the inside of the threaded hole 54. When it is necessary to adjust the outline size of the positioning module 5 to position the retaining frame 6 of different sizes, the retaining frame 6 is first sleeved on the outside of the four push plates 52, and then the hand wheel 553 is turned. 3 drives the driving rod 552 and the driving tooth 554 to rotate. Since the driving tooth 554 is meshed with the four driven teeth 557, when the driving tooth 554 rotates, the four driven teeth 557 will rotate synchronously, thereby driving the driven screw rod 556 to rotate. Since the driven screw rod 556 is threadedly connected to the threaded hole 54, when the driven screw rod 556 rotates, the four push plates 52 will move outward synchronously along the linear guide rail 51 until the four push plates 52 push the retaining frame 6.

[0039] See also Figure 4 Four reserved holes 11 are set through the inside of the bottom plate 1 and the top plate 2, and a threaded hole 12 is reserved on the side of the bottom plate 1, and the threaded hole 12 is connected to the reserved hole 11. The lower tooth plate 3 and the upper tooth plate 4 are both reserved with a second plug hole 33. A fastening bolt 13 is screwed into the threaded hole 12 and then passed through the second plug hole 33 to fix the lower tooth plate 3 and the upper tooth plate 4;

[0040] See also Fig. 9 The positioning pin 7 includes a column portion 71 located inside the second socket 33, the outer end of the column portion 71 is integrally connected to the limiting portion 72, and the inner end is integrally connected to the positioning constraint portion 73, the positioning constraint portion 73 is adapted to the positioning hole 61, and both are flat in shape, and the column portion 71 is adapted to the second socket 33, and both are circular in structure.

[0041] In summary, the eight-hole retainer compression test fixture of this embodiment can, on the one hand, greatly improve safety, and the splashes of the retainer 6 at the moment of disintegration will not spread outward; on the other hand, it can play an effect on the positioning of the retainer 6 before being compressed, so that the pressure applied by the main shaft can be uniform on each part of the retainer 6, thereby improving the reliability of the test data and results; on the other hand, it can play an effect on the positioning of the retainer 6 before being compressed, so that the pressure applied by the main shaft can be uniform on each part of the retainer 6, thereby improving the reliability of the test data and results; and the positioning module 5 provided can not only position the retainer 6, but also be adjusted according to the specifications, i.e., size, of the retainer 6, thereby realizing that the fixture can cope with retainers 6 of any specifications and sizes, with stronger adaptability and better functionality.

Claims

1. An eight-hole cage compression test fixture, characterized in that: include: A bottom plate (1), the bottom plate (1) being mounted on a test station of a compression testing machine, and a plurality of lower tooth plates (3) being connected to the upper portion of the bottom plate (1); A top plate (2), the top plate (2) being mounted on a lower pressure spindle of a compression testing machine, and a plurality of upper tooth plates (4) being connected to the lower portion of the top plate (2); A positioning module (5), wherein the positioning module (5) is arranged on the upper part of the base plate (1), and the outline size of the positioning module (5) can be adjusted; A retaining frame (6), wherein the retaining frame (6) is sleeved on the outside of the positioning module (5), and a plurality of positioning holes (61) are reserved around the retaining frame (6); A positioning pin (7) is inserted into each lower tooth plate (3) and upper tooth plate (4), and the end of the positioning pin (7) extends to the inside of the positioning hole (61).

2. The eight-hole cage compression test fixture device according to claim 1, characterized in that: The plurality of lower tooth plates (3) and upper tooth plates (4) are distributed in an alternating manner to form a ring structure, and reserved spaces (8) exist between the plurality of lower tooth plates (3) and upper tooth plates (4) and the corresponding top plate (2) and bottom plate (1).

3. The eight-hole cage compression test fixture device according to claim 1, characterized in that: The bottom plate (1) and the top plate (2) have the same structure. A plurality of reserved holes (11) are arranged through the inside of the bottom plate (1), and a threaded hole (12) is reserved on the side of the bottom plate (1). The threaded hole (12) is connected to the reserved hole (11), and the lower tooth plate (3) is fixed inside the reserved hole (11) by means of a fastening bolt (13).

4. The eight-hole cage compression test fixture device according to claim 3 is characterized in that: The lower tooth plate (3) and the upper tooth plate (4) have the same structure. The lower tooth plate (3) comprises an arc-shaped plate (31) inserted into the reserved hole (11). The upper part of the arc-shaped plate (31) is penetrated by a first insertion hole (32), and the lower part is penetrated by a second insertion hole (33). When the positioning pin (7) passes through the lower tooth plate (3) and the upper tooth plate (4), it will be inserted into the inside of the first insertion hole (32). The second insertion hole (33) is connected with the first threaded hole (12).

5. The eight-hole cage compression test fixture device according to claim 1, characterized in that: The positioning module (5) comprises a plurality of linear guide rails (51) mounted on the upper part of the base plate (1), and a four-way adjustment mechanism (55) mounted on the upper part of the base plate (1) and located inside the plurality of linear guide rails (51). The upper part of each linear guide rail (51) is slidably connected to a push plate (52), and each push plate (52) is provided with a second threaded hole (54) in its interior.

6. The eight-hole cage compression test fixture device according to claim 5, characterized in that: A guide groove (53) is reserved at the bottom of the push plate (52), the linear guide rail (51) is located inside the guide groove (53), and the linear guide rail (51) and the guide groove (53) are both matched "cross" structures.

7. The eight-hole cage compression test fixture device according to claim 5, characterized in that: The four-way adjustment mechanism (55) comprises a bearing seat (551) mounted on the upper part of the base plate (1); the interior of the bearing seat (551) is rotatably connected to a driving rod (552); a hand wheel (553) is mounted on the top of the driving rod (552); and a driving tooth (554) is fixedly mounted on the outside of the driving rod (552).

8. The eight-hole cage compression test fixture device according to claim 7, characterized in that: The four-way adjustment mechanism (55) further comprises a plurality of seat bodies (555) mounted on the upper part of the base plate (1); the upper part of each seat body (555) is rotatably connected to a driven screw rod (556); a driven tooth (557) is mounted on the non-threaded end of each driven screw rod (556) facing the driving tooth (554); and the driving tooth (554) is meshed with the plurality of driven teeth (557).

9. The eight-hole cage compression test fixture device according to claim 8, characterized in that: The seat body (555) and the driven screw rod (556) are rotatably connected via a bearing (558), and the threaded end of the driven screw rod (556) extends to the interior of the second threaded hole (54).

10. The eight-hole cage compression test fixture device according to claim 4, characterized in that: The positioning pin (7) comprises a column portion (71) located inside the second insertion hole (33); the outer end of the column portion (71) is integrally connected to a limit portion (72); the inner end is integrally connected to a positioning constraint portion (73); the positioning constraint portion (73) is compatible with the positioning hole (61) and both are flat in shape; the column portion (71) is compatible with the second insertion hole (33) and both are circular in structure.

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