Flanged oilless bearing with improved structure and preparation process of flanged oilless bearing

Abstract

The invention discloses a turnup oilless bearing with an improved structure and a preparation process of the turnup oilless bearing. The turnup oilless bearing comprises a reinforcing assembly, the reinforcing assembly is composed of a first sleeve, a first through hole, a first lubricating block, a first clamping groove, a first clamping piece, a first reinforcing plate, a second clamping groove, a second clamping piece, a second reinforcing plate, a third clamping groove, a third reinforcing plate, a second through hole, a second lubricating block and a first flanging. The first clamping groove is formed in the first sleeve. According to the flange structure, the stability and the strength of the flange structure are improved by using the reinforcing assembly; by using the functional assembly, multiple lubrication rotation is carried out during use, vibration is absorbed, and the service life of the product is prolonged; by using the adjusting assembly, the product size can be adjusted according to specific conditions, and the practicability is improved; the mixed wear-resistant particles of silicon carbide and aluminum oxide are added into the mixed metal material to be smelted together, so that the wear resistance of the bearing is effectively improved, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of flanged oil-free bearings, in particular to a flanged oil-free bearing with an improved structure and a preparation process thereof. Background Art

[0002] A bearing is a component used to determine the relative motion position of a rotating shaft and other parts, and plays a supporting or guiding role. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its motion, and ensure its rotation accuracy. At the same time, the bearing can also withstand radial force, axial force and torque, and transmit rotational motion. Among them, the flanged oil-free bearing is a special type of bearing. It combines the characteristics of metal bearings and oil-free lubricated bearings. It has the advantages of high load-bearing capacity, impact resistance, high temperature resistance, and strong self-lubrication ability. However, the traditional flanged oil-free bearing still has shortcomings. First, the traditional flanged oil-free bearing The flange structure is usually used to enhance the bearing capacity of the bearing, and has high requirements on the stability and strength of the flange structure; secondly, traditional flanged oil-free bearings mostly use single-layer lubrication for rotation, and it is difficult to absorb the vibration generated during movement, which affects the service life of the product; thirdly, after the traditional flanged oil-free bearings are completed, it is difficult to change the size according to the specific situation, and the practicality is insufficient; fourthly, traditional flanged oil-free bearings are mostly cast with copper alloy, and have high requirements on the wear resistance of the alloy and product quality; therefore, it is necessary to design a flanged oil-free bearing with an improved structure and its preparation process. Summary of the invention

[0003] The object of the present invention is to provide a flanged oil-free bearing with an improved structure and a preparation process thereof, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flanged oil-free bearing with an improved structure, comprising a reinforcement assembly, wherein the reinforcement assembly is composed of a first sleeve, a first through hole, a first lubricating block, a first groove, a first clamping piece, a first reinforcing plate, a second groove, a second clamping piece, a second reinforcing plate, a third groove, a third reinforcing plate, a second through hole, a second lubricating block and a first flange, a first groove is provided on the first sleeve, a first clamping piece is tightly attached to the first groove, the first clamping piece is fixedly connected to the first reinforcing plate, a second groove is provided on the first reinforcing plate, a second clamping piece is tightly attached to the second groove, a second sleeve of the functional assembly is tightly attached to the first sleeve, a third through hole is provided on the second sleeve, a third lubricating block is tightly attached to the third through hole, the third lubricating block is tightly attached to the first sleeve, a fourth groove of the adjustment assembly is provided on the second sleeve, and the fourth groove is connected to a connecting piece through threaded cooperation.

[0005] As a further technical solution of the present invention, the second clamping member is symmetrically fixedly connected to the second reinforcing plate, the second reinforcing plate is tightly attached to the first reinforcing plate, a third clamping groove is opened on the first reinforcing plate, the third reinforcing plate is tightly attached to the third clamping groove, the third reinforcing plate is tightly attached to the first reinforcing plate, the third reinforcing plate is tightly attached to the second reinforcing plate, a second through hole is opened on the second reinforcing plate, the second through hole is opened on the first reinforcing plate, and the second lubricating block is tightly attached to the second through hole.

[0006] As a further technical solution of the present invention, a first through hole is formed on the first sleeve, and a first lubricating block is tightly attached to the first through hole.

[0007] As a further technical solution of the present invention, the first through hole is provided on the third reinforcing plate, the third reinforcing plate is closely attached to the first sleeve, the first sleeve is fixedly connected with a first flange, and the first flange is provided with a second through hole.

[0008] As a further technical solution of the present invention, the functional component is composed of a second sleeve, a third through hole, a third lubricating block, a third sleeve, a damper, a shock-absorbing spring, a fourth sleeve, a second flange, a fourth through hole and a fourth lubricating block. The third sleeve is tightly attached to the first sleeve, a third through hole is provided in the third sleeve, the damper is symmetrically fixedly connected to the third sleeve, the shock-absorbing spring is fixedly connected to the damper, one end of the damper is fixedly connected to the second sleeve, one end of the damper is fixedly connected to the fourth sleeve, and the fourth sleeve is provided with a third through hole.

[0009] As a further technical solution of the present invention, a second flange is fixedly connected to the fourth sleeve, a fourth through hole is opened on the second flange, a fourth lubricating block is tightly attached to the fourth through hole, the fourth lubricating block is tightly attached to the first flange, and the first flange is tightly attached to the second flange.

[0010] As a further technical solution of the present invention, the adjustment assembly consists of a fourth slot, a connecting piece, a fifth sleeve, a fifth through hole, a fifth lubricating block, a sixth through hole and a sixth lubricating block, the connecting piece is fixedly connected to the fifth sleeve, and the fifth sleeve is tightly pressed on the second sleeve.

[0011] As a further technical solution of the present invention, a fifth through hole is formed on the fifth sleeve, a fifth lubricating block is tightly attached to the fifth through hole, and the fifth lubricating block is tightly attached to the second sleeve.

[0012] As a further technical solution of the present invention, a sixth through hole is opened in the fifth sleeve, and a sixth lubricating block is tightly attached to the sixth through hole.

[0013] A preparation process of a flanged oil-free bearing with an improved structure, comprising the following steps: step one, raw material processing; step two, blank production; step three, processing and storage;

[0014] In the above step 1, according to the formula requirements of the designed oil-free bearing, copper and other metal raw materials are accurately proportioned, and then mixed wear-resistant particles of silicon carbide and aluminum oxide are added to the mixed metal materials, and the mixed raw materials are smelted to obtain alloy materials that meet the composite requirements; the smelted alloy materials are cast into rough materials of the required shape by centrifugal casting, and the cast tube materials and rod materials are cut into the required rough material size by a cutting machine;

[0015] Among them, in the above step 2, the cut raw material is processed by a lathe to form a semi-finished blank, and the lathe processing is completed; then the semi-finished bearing is placed in the concave die through the flanging die, and the punch is pressed downward by the pressure of the punching machine to achieve the flanging effect, and all the designed accessories are processed by the lathe, and the size and appearance of the processed products are sampled to ensure that they meet the standards before being put into storage for processing; the stocked blanks are taken out and the blank size and excess size are sampled again, and according to the design requirements, the honeycomb holes are processed on the blanks using an automatic drilling machine to complete the honeycomb hole processing; graphite is used as a solid lubricant and glue is evenly applied, and then embedded in the honeycomb holes of the copper alloy, ensuring that the inner and outer surfaces of the graphite protrude from the alloy matrix surface for subsequent processing;

[0016] In the above step three, a dryer is used to dry the blank embedded with solid lubricant, the drying temperature is 50°C, and the drying time is 3 hours. After drying, a lathe is used to clean the protruding parts of the solid lubricant and most of the excess copper alloy, and the size and appearance of the semi-finished product are randomly inspected to ensure compliance with the standards; a CNC machine tool is used to precisely process the inner and outer diameters, chamfers, and end faces to meet design requirements; a vacuum oil pump is used to pump the lubricating oil into the pores of the solid lubricant to ensure sufficient oil storage and extend the service life of the product. The processed products are fully inspected and stored in the warehouse.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the flanged oil-free bearing with an improved structure and its preparation process are as follows: the first through hole is opened on the first sleeve and the third reinforcing plate, and the first lubricating block is embedded and installed therein, the third reinforcing plate is clamped in the first reinforcing plate, the first reinforcing plate and the second reinforcing plate are fixed, the first reinforcing plate is fixed by the second reinforcing plate, the first reinforcing plate is clamped in the first slot by the first clamping member, and the second through hole is opened on the first clamping member and the first flange, and the second lubricating block is embedded and installed in the second through hole, so as to strengthen the support for the first flange and increase the stability and strength of the flange structure; the second sleeve, the third sleeve and the fourth sleeve are connected by a damper and a shock-absorbing spring, and the third through hole is opened on the second sleeve, the third sleeve and the fourth sleeve respectively, and the third lubricating block is embedded and installed in the third through hole, so that the second sleeve, the third sleeve, the fourth sleeve and the third lubricating block are tightly attached to the first sleeve, and the second flange is arranged on the fourth sleeve, and the fourth through hole is opened thereon, A fourth lubricating block is embedded and installed in the fourth through hole to ensure that the fourth lubricating block and the second flange are tightly attached to the first flange, so that multiple lubrication rotations are performed during use, and vibrations are absorbed, thereby extending the service life of the product; a fourth slot is opened on the second sleeve, and the size of the fifth sleeve is designed according to requirements, the fifth sleeve and the second sleeve are connected by a connecting piece, and at the same time, a fifth through hole and a sixth through hole are opened on the fifth sleeve, and the fifth lubricating block and the sixth lubricating block are respectively embedded and installed to ensure good rotation performance of the fifth sleeve. The product size can be adjusted according to specific circumstances, thereby increasing practicality; according to the formula requirements of the designed oil-free bearing, copper and other metal raw materials are accurately proportioned, and then mixed wear-resistant particles of silicon carbide and aluminum oxide are added to the mixed metal materials, and the mixed raw materials are smelted to obtain alloy materials that meet the composite requirements. The high wear resistance of silicon carbide and the high thermal stability, chemical stability and good mechanical properties of aluminum oxide can be used to effectively improve the wear resistance of the bearing and improve the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a partial structural exploded diagram of the present invention;

[0020] Figure 3 for Figure 2 A magnified view of the local structure of the middle A area;

[0021] Figure 4 for Figure 2 A magnified view of the local structure of the middle B area;

[0022] Figure 5 It is a schematic diagram of the position of the connecting member in the present invention;

[0023] Figure 6 It is a schematic diagram of the position of the first clamp in the present invention;

[0024] Figure 7 It is a schematic diagram of the position of the first flange in the present invention;

[0025] Figure 8 is a schematic diagram of the position of the damper in the present invention;

[0026] Fig. 9 is a flow chart of the method of the present invention;

[0027] In the figure: 1. reinforcement component; 3. functional component; 5. adjustment component; 11. first sleeve; 12. first through hole; 13. first lubricating block; 14. first slot; 15. first clamp; 16. first reinforcing plate; 17. second slot; 18. second clamp; 19. second reinforcing plate; 20. third slot; 21. third reinforcing plate; 22. second through hole; 23. second lubricating block; 24. first flange; 31. second sleeve; 32. third through hole; 33. third lubricating block; 34. third sleeve; 35. damper; 36. shock absorbing spring; 37. fourth sleeve; 38. second flange; 39. fourth through hole; 40. fourth lubricating block; 51. fourth slot; 52. connecting piece; 53. fifth sleeve; 54. fifth through hole; 55. fifth lubricating block; 56. sixth through hole; 57. sixth lubricating block. DETAILED DESCRIPTION

[0028] 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.

[0029] Please see attached Figure 1 -Attached Figure 8The present invention provides an embodiment: a flanged oil-free bearing with an improved structure, comprising a reinforcement component 1, the reinforcement component 1 is composed of a first sleeve 11, a first through hole 12, a first lubricating block 13, a first slot 14, a first clamping piece 15, a first reinforcing plate 16, a second slot 17, a second clamping piece 18, a second reinforcing plate 19, a third slot 20, a third reinforcing plate 21, a second through hole 22, a second lubricating block 23 and a first flange 24, the first sleeve 11 is provided with a first slot 14, the first slot 14 is closely attached to the first clamping piece 15, the first clamping piece 15 is fixedly connected to the first reinforcing plate 16, the first reinforcing plate 16 is provided with a second slot 17, the second slot 17 is closely attached to the second clamping piece 18, the first sleeve 11 is closely attached to the active The second sleeve 31 in the energy component 3, the second sleeve 31 is provided with a third through hole 32, the third through hole 32 is closely attached to the third lubricating block 33, the third lubricating block 33 is closely attached to the first sleeve 11, the second sleeve 31 is provided with a fourth slot 51 in the adjustment component 5, the fourth slot 51 is connected with a connecting member 52 through threaded cooperation, the second clamping member 18 is symmetrically fixedly connected to the second reinforcing plate 19, the second reinforcing plate 19 is closely attached to the first reinforcing plate 16, the first reinforcing plate 16 is provided with a third slot 20, the third reinforcing plate 21 is closely attached to the third slot 20, the third reinforcing plate 21 is closely attached to the first reinforcing plate 16, the third reinforcing plate 21 is closely attached to the second reinforcing plate 19, the second reinforcing plate 19 is provided with a second through hole 22, the second through hole 22 is provided on the first reinforcing plate 16, a second lubricating block 23 is closely attached to the second through hole 22, a first through hole 12 is provided on the first sleeve 11, a first lubricating block 13 is closely attached to the first through hole 12, the first through hole 12 is provided on the third reinforcing plate 21, the third reinforcing plate 21 is closely attached to the first sleeve 11, a first flange 24 is fixedly connected to the first sleeve 11, a second through hole 22 is provided on the first flange 24, a damper 35, a shock absorbing spring 36, a fourth sleeve 37, a second flange 38, a fourth through hole 39 and a fourth lubricating block 40 are composed, a third sleeve 34 is closely attached to the first sleeve 11, a third through hole 24 is provided in the third sleeve 34, The third sleeve 34 is symmetrically fixedly connected with a damper 35, and a shock absorbing spring 36 is fixedly connected to the damper 35. One end of the damper 35 is fixedly connected to the second sleeve 31, and one end of the damper 35 is fixedly connected to the fourth sleeve 37. The fourth sleeve 37 is provided with a third through hole 32, and the fourth sleeve 37 is fixedly connected with a second flange 38. The second flange 38 is provided with a fourth through hole 39, and a fourth lubricating block 40 is closely attached to the fourth through hole 39. The fourth lubricating block 40 is closely attached to the first flange 24, and the first flange 24 is closely attached to the second flange 38. The adjusting assembly 5 is composed of a fourth slot 51, a connecting member 52, a fifth sleeve 53, a fifth through hole 54, a fifth lubricating block 55, a sixth through hole 56 and a sixth lubricating block 57.The connecting member 52 is fixedly connected to the fifth sleeve 53, the fifth sleeve 53 is pressed tightly against the second sleeve 31, a fifth through hole 54 is provided on the fifth sleeve 53, a fifth lubricating block 55 is closely attached to the fifth through hole 54, the fifth lubricating block 55 is closely attached to the second sleeve 31, a sixth through hole 56 is provided in the fifth sleeve 53, the sixth through hole 56 is used to support the sixth lubricating block 57, the sixth through hole 56 is closely attached to the sixth lubricating block 57, and the sixth lubricating block 57 is used to provide lubrication effect when in use.

[0030] Please see attached Fig. 9 The present invention provides an embodiment: a preparation process of a flanged oil-free bearing with an improved structure, comprising the following steps: step one, raw material processing; step two, blank production; step three, processing and storage;

[0031] In the above step 1, according to the formula requirements of the designed oil-free bearing, copper and other metal raw materials are accurately proportioned, and then mixed wear-resistant particles of silicon carbide and aluminum oxide are added to the mixed metal materials, and the mixed raw materials are smelted to obtain alloy materials that meet the composite requirements; the smelted alloy materials are cast into rough materials of the required shape by centrifugal casting, and the cast tube materials and rod materials are cut into the required rough material size by a cutting machine;

[0032] Among them, in the above step 2, the cut raw material is processed by a lathe to form a semi-finished blank, and the lathe processing is completed; then the semi-finished bearing is placed in the concave die through the flanging die, and the punch is pressed downward by the pressure of the punching machine to achieve the flanging effect, and all the designed accessories are processed by the lathe, and the size and appearance of the processed products are sampled to ensure that they meet the standards before being put into storage for processing; the stocked blanks are taken out and the blank size and excess size are sampled again, and according to the design requirements, the honeycomb holes are processed on the blanks using an automatic drilling machine to complete the honeycomb hole processing; graphite is used as a solid lubricant and glue is evenly applied, and then embedded in the honeycomb holes of the copper alloy, ensuring that the inner and outer surfaces of the graphite protrude from the alloy matrix surface for subsequent processing;

[0033] In the above step three, a dryer is used to dry the blank embedded with solid lubricant, the drying temperature is 50°C, and the drying time is 3 hours. After drying, a lathe is used to clean the protruding parts of the solid lubricant and most of the excess copper alloy, and the size and appearance of the semi-finished product are randomly inspected to ensure compliance with the standards; a CNC machine tool is used to precisely process the inner and outer diameters, chamfers, and end faces to meet design requirements; a vacuum oil pump is used to pump the lubricating oil into the pores of the solid lubricant to ensure sufficient oil storage and extend the service life of the product. The processed products are fully inspected and stored in the warehouse.

[0034] Working principle: When in use, the first through hole 12 is opened on the first sleeve 11 and the third reinforcing plate 21, and the first lubricating block 13 is embedded and installed therein, and the third reinforcing plate 21 is clamped in the first reinforcing plate 16 to fix the first reinforcing plate 16 and the second reinforcing plate 19, and the first reinforcing plate 16 is fixed by the second reinforcing plate 19, and the first reinforcing plate 16 is clamped in the first slot 14 by the first clamping member 15 to be fixed, and the second through hole 22 is opened on the first clamping member 15 and the first flange 24, and the second lubricating block 23 is embedded and installed in the second through hole 22 , thereby strengthening the support for the first flange 24 and increasing the stability and strength of the flange structure; by connecting the second sleeve 31, the third sleeve 34 and the fourth sleeve 37 through the damper 35 and the shock absorbing spring 36, and respectively opening a third through hole 32 on the second sleeve 31, the third sleeve 34 and the fourth sleeve 37, and embedding and installing the third lubricating block 33 in the third through hole 32, so that the second sleeve 31, the third sleeve 34, the fourth sleeve 37 and the third lubricating block 33 are closely attached to the first sleeve 11, and a second flange 38 is provided on the fourth sleeve 37, and a fourth through hole 32 is opened thereon The fourth through hole 39 is provided, and the fourth lubricating block 40 is embedded and installed in the fourth through hole 39, so that the fourth lubricating block 40 and the second flange 38 are closely attached to the first flange 24, so that multiple lubrication rotations are performed during use, and vibration is absorbed, thereby extending the service life of the product; by opening a fourth slot 51 on the second sleeve 31, and designing the size of the fifth sleeve 53 according to requirements, the fifth sleeve 53 is connected to the second sleeve 31 through the connecting member 52, and at the same time, by opening a fifth through hole 54 and a sixth through hole 56 on the fifth sleeve 53, the fifth lubricating block 55 and the sixth through hole 56 are respectively embedded and installed. The lubrication block 57 ensures good rotation performance of the fifth sleeve 53, and the product size can be adjusted according to specific circumstances, thereby increasing practicality. According to the formula requirements of the designed oil-free bearing, copper and other metal raw materials are accurately proportioned, and then mixed wear-resistant particles of silicon carbide and aluminum oxide are added to the mixed metal materials. The mixed raw materials are smelted to obtain alloy materials that meet composite requirements. The high wear resistance of silicon carbide and the high thermal stability, chemical stability and good mechanical properties of aluminum oxide can be used to effectively improve the wear resistance of the bearing and improve the quality of the product.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A flanged oil-free bearing with an improved structure, comprising a reinforcement component (1), characterized in that: The reinforcement assembly (1) comprises a first sleeve (11), a first through hole (12), a first lubricating block (13), a first clamping groove (14), a first clamping piece (15), a first reinforcing plate (16), a second clamping groove (17), a second clamping piece (18), a second reinforcing plate (19), a third clamping groove (20), a third reinforcing plate (21), a second through hole (22), a second lubricating block (23) and a first flange (24); the first sleeve (11) is provided with a first clamping groove (14), the first clamping piece (15) is tightly attached to the first clamping groove (14), and the first clamping piece (15) is fixedly connected to the first reinforcing plate A second clamping groove (17) is formed on the reinforcement plate (16), a second clamping member (18) is closely attached to the second clamping groove (17), a second sleeve (31) in the functional component (3) is closely attached to the first sleeve (11), a third through hole (32) is formed on the second sleeve (31), a third lubricating block (33) is closely attached to the third through hole (32), the third lubricating block (33) is closely attached to the first sleeve (11), a fourth clamping groove (51) in the adjustment component (5) is formed on the second sleeve (31), and the fourth clamping groove (51) is connected to the connecting member (52) through threaded engagement.

2. The flanged oil-free bearing with an improved structure according to claim 1, characterized in that: The second clamping member (18) is symmetrically fixedly connected to the second reinforcing plate (19); the second reinforcing plate (19) is closely attached to the first reinforcing plate (16); a third clamping groove (20) is provided on the first reinforcing plate (16); a third reinforcing plate (21) is closely attached to the third clamping groove (20); the third reinforcing plate (21) is closely attached to the first reinforcing plate (16); the third reinforcing plate (21) is closely attached to the second reinforcing plate (19); a second through hole (22) is provided on the second reinforcing plate (19); the second through hole (22) is provided on the first reinforcing plate (16); a second lubricating block (23) is closely attached to the second through hole (22).

3. The flanged oil-free bearing with an improved structure according to claim 1, characterized in that: The first sleeve (11) is provided with a first through hole (12), and a first lubricating block (13) is tightly attached to the first through hole (12).

4. The flanged oil-free bearing with an improved structure according to claim 3, characterized in that: The first through hole (12) is formed on the third reinforcing plate (21), the third reinforcing plate (21) is closely attached to the first sleeve (11), a first flange (24) is fixedly connected to the first sleeve (11), and a second through hole (22) is formed on the first flange (24).

5. The flanged oil-free bearing with an improved structure according to claim 1, characterized in that: The functional component (3) is composed of a second sleeve (31), a third through hole (32), a third lubricating block (33), a third sleeve (34), a damper (35), a shock absorbing spring (36), a fourth sleeve (37), a second flange (38), a fourth through hole (39) and a fourth lubricating block (40); the third sleeve (34) is tightly attached to the first sleeve (11); the third sleeve (34) is provided with a third through hole (32); the damper (35) is symmetrically fixedly connected to the third sleeve (34); the shock absorbing spring (36) is fixedly connected to the damper (35); one end of the damper (35) is fixedly connected to the second sleeve (31); one end of the damper (35) is fixedly connected to the fourth sleeve (37); the fourth sleeve (37) is provided with a third through hole (32).

6. The flanged oil-free bearing with an improved structure according to claim 5, characterized in that: The fourth sleeve (37) is fixedly connected to a second flange (38), the second flange (38) is provided with a fourth through hole (39), a fourth lubricating block (40) is tightly attached to the fourth through hole (39), the fourth lubricating block (40) is tightly attached to the first flange (24), and the first flange (24) is tightly attached to the second flange (38).

7. The flanged oil-free bearing with an improved structure according to claim 1, characterized in that: The adjustment assembly (5) is composed of a fourth slot (51), a connecting piece (52), a fifth sleeve (53), a fifth through hole (54), a fifth lubricating block (55), a sixth through hole (56) and a sixth lubricating block (57); the connecting piece (52) is fixedly connected to the fifth sleeve (53), and the fifth sleeve (53) is tightly pressed on the second sleeve (31).

8. The flanged oil-free bearing with an improved structure according to claim 7, characterized in that: The fifth sleeve (53) is provided with a fifth through hole (54), a fifth lubricating block (55) is tightly attached to the fifth through hole (54), and the fifth lubricating block (55) is tightly attached to the second sleeve (31).

9. The flanged oil-free bearing with an improved structure according to claim 8, characterized in that: A sixth through hole (56) is provided in the fifth sleeve (53), and a sixth lubricating block (57) is tightly attached to the sixth through hole (56).

10. A process for preparing a flanged oil-free bearing with an improved structure, comprising the following steps: Step 1, raw material processing; Step 2, blank production; Step 3, processing and preservation; It is characterized by: In the above step 1, according to the formula requirements of the designed oil-free bearing, copper and other metal raw materials are accurately proportioned, and then mixed wear-resistant particles of silicon carbide and aluminum oxide are added to the mixed metal materials, and the mixed raw materials are smelted to obtain alloy materials that meet the composite requirements; the smelted alloy materials are cast into rough materials of the required shape by centrifugal casting, and the cast tube materials and rod materials are cut into the required rough material size by a cutting machine; Among them, in the above step 2, the cut raw material is processed by a lathe to form a semi-finished blank, and the lathe processing is completed; then the semi-finished bearing is placed in the concave die through the flanging die, and the punch is pressed downward by the pressure of the punching machine to achieve the flanging effect, and all the designed accessories are processed by the lathe, and the size and appearance of the processed products are sampled to ensure that they meet the standards before being put into storage for processing; the stocked blanks are taken out and the blank size and excess size are sampled again, and according to the design requirements, the honeycomb holes are processed on the blanks using an automatic drilling machine to complete the honeycomb hole processing; graphite is used as a solid lubricant and glue is evenly applied, and then embedded in the honeycomb holes of the copper alloy, ensuring that the inner and outer surfaces of the graphite protrude from the alloy matrix surface for subsequent processing; In the above step three, a dryer is used to dry the blank embedded with solid lubricant, the drying temperature is 50°C, and the drying time is 3 hours. After drying, a lathe is used to clean the protruding parts of the solid lubricant and most of the excess copper alloy, and the size and appearance of the semi-finished product are randomly inspected to ensure compliance with the standards; a CNC machine tool is used to precisely process the inner and outer diameters, chamfers, and end faces to meet design requirements; a vacuum oil pump is used to pump the lubricating oil into the pores of the solid lubricant to ensure sufficient oil storage and extend the service life of the product. The processed products are fully inspected and stored in the warehouse.

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