CN216714999U

CN216714999U - Integral stretching bearing retainer, bearing and stretching forming device

Info

Publication number: CN216714999U
Application number: CN202123337415.2U
Authority: CN
Inventors: 赵培振; 郑广会
Original assignee: Shandong Golden Empire Precision Machinery Technology Co Ltd
Current assignee: Shandong Golden Empire Precision Machinery Technology Co Ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-06-10
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses an integral stretching bearing retainer and a bearing machine stretching forming device, and relates to the technical field of wind power main shafts. The technical scheme is as follows: the integral stretching bearing retainer comprises a circular bottom plate, wherein the edge of the bottom plate is connected with an annular side plate, the side plate is superposed with the central line of the bottom plate, the bottom plate is connected with the side plate through a curved plate, and the bottom plate, the curved plate and the side plate are integrally formed continuous panels without welding seams. The retainer body is formed by stretching in the direction vertical to the plate, welding seams and other connecting structures are avoided, the retainer is integrally formed, the performance is better, and the processing speed is higher.

Description

Integral stretching bearing retainer, bearing and stretching forming device

Technical Field

The utility model relates to the technical field of wind power equipment, in particular to an integral stretching bearing retainer, a bearing and a stretching forming device.

Background

The bearing retainer is placed in the bearing and used for keeping the rolling bodies in the bearing fixed, so that the rolling bodies can be effectively prevented from being rubbed and clamped. The application field of the current bearing retainer is gradually widened, particularly the large-scale retainer applied to the field of wind power main shafts, the diameter of the bearing retainer for the main shaft of the wind driven generator is larger, the axial width and the radial thickness are relatively smaller, the traditional processing mode is steel plate welding processing, the welding part is easy to generate the welding phenomenon, the internal tissue distribution of the retainer is uneven, the strength of a small end is lower, cracks are easy to generate, even the retainer is broken, the cylindrical retainer manufactured by welding has different overall properties, and the quality of the welding part is also easy to be influenced by factors such as the level of a welding technician, welding equipment, environment, welding materials and the like.

Disclosure of Invention

In order to solve the problem of inconsistent overall performance caused by welding in the manufacturing process of the bearing retainer for the wind power equipment, the utility model provides an integrally-formed integral stretching bearing retainer, a bearing and a stretching forming device.

In order to achieve the purpose, the utility model provides the following technical scheme: the integral stretching bearing retainer comprises a circular bottom plate, wherein the edge of the bottom plate is connected with an annular side plate, the side plate is superposed with the central line of the bottom plate, the bottom plate is connected with the side plate through a curved plate, and the bottom plate, the curved plate and the side plate are integrally formed continuous panels without welding seams. The retainer body is formed by stretching in the direction perpendicular to the plate material, and is free of welding seams and other connecting structures, integrally formed, better in performance and higher in processing speed.

Preferably, the bottom plate, the curved plate and the side plate are integrally formed by punching. Improve the uniformity and strength of the whole material.

Preferably, the top and the bottom of the curved plate are both annular, the top of the curved plate is tangent to the side plate, and the bottom of the curved plate is horizontally arranged and tangent to the bottom plate.

Preferably, the diameter of the side plate is larger than that of the bottom plate, the diameter of the top of the curved plate is larger than that of the bottom of the curved plate, and the section of the middle of the curved plate is arc-shaped.

Preferably, a plurality of window holes are formed in the side plate, the window holes are uniformly distributed in the circumferential direction where the side plate is located, and the window holes are formed by stamping. And punching a window hole on the stretched retainer body for fixing the rolling body.

Preferably, the side plates are cylindrical, and the top diameter of the side plates is equal to the bottom diameter. When the side plate is cylindrical, the bearing retainer is a cylindrical retainer.

Preferably, the side plate is in a circular truncated cone shape, and the diameter of the top of the side plate is larger than that of the bottom of the side plate. In this case, the bearing holder is a conical holder, and the production of the cylindrical holder and the conical holder can be switched by replacing the mold.

A bearing comprises an inner ring and an outer ring, wherein any one of the integral stretching bearing retainers is arranged between the inner ring and the outer ring, a rolling body is further arranged between the inner ring and the outer ring, and the rolling body is arranged in a window hole of the integral stretching bearing retainer.

The utility model provides a stretch forming for above-mentioned whole tensile bearing holder, includes tensile die and tensile terrace die, and tensile die includes at the bottom of the first passageway, second passageway and the horizontal mould that connect gradually from the top down, and the horizontal cross-section of first passageway is circular and the passageway diameter reduces from the top down gradually, and the passageway diameter of second passageway is from the top down unchangeable or even reduction, and the junction at the bottom of second passageway and the horizontal mould is provided with the fillet.

Preferably, the stretching female die is arranged above the bottom of the lower die, a lower cushion block is arranged between the stretching female die and the lower die base, a positioning plate is arranged above the stretching female die, a positioning groove is formed in the positioning plate, the stretching male die is connected with the upper die base through an upper cushion plate, and the upper die base is connected with the driving assembly.

The utility model has the beneficial effects that: the integral large-scale bearing retainer is manufactured by stretching and molding a backing material along the vertical direction of the backing material by using advanced equipment, the problems that a welding seam is easy to weld and a small end ring is easy to crack in the traditional production process are solved, the operation is simple and convenient, the molds with different shapes can be switched between the cylindrical retainer and the conical retainer, the processing efficiency is high, and the application prospect and the economic benefit are very high.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of a holder die in example 1 of the embodiment of the present invention.

FIG. 2 is a schematic view of a substrate placed on a mold in example 1 of an embodiment of the present invention.

Fig. 3 is a schematic view of the stretched cage in example 1 according to the embodiment of the present invention.

Fig. 4 is a sectional view of fig. 3.

Fig. 5 is a schematic view of a holder mold in example 2 of the embodiment of the present invention.

Fig. 6 is a schematic view of the stretched cage in example 2 of the embodiment of the present invention.

Fig. 7 is a cross-sectional view of fig. 6.

FIG. 8 is a schematic structural view of a stretching apparatus in example 4 of the embodiment of the present invention.

In the figure: 1. the die comprises a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, 4, side plates, 5, a curved plate, 6, a bottom plate, 7, a bottom material, 8, an upper die base, 9, an upper backing plate, 10, a stretching male die, 11, a locating plate, 12, a female die jacket, 13, a stretching female die, 14, a lower backing block, 15, a lower backing plate, 16, a lower die base, 17 and a horizontal die bottom.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-4, an integral tensile bearing retainer, specifically a cylindrical retainer, is applied to the technical field of wind power main shafts, and the outer diameter of the retainer is not less than one meter; the side plates 4, the curved plates 5 and the bottom plate 6 of the retainer body are formed by stamping and stretching the circular backing material 7, the whole retainer is integrally formed without welding seams, the problems of uneven internal structure, cracks, welding failure and the like of the retainer produced by the traditional welding process are avoided, the operation is convenient, and the processing time is short. Including circular shape bottom plate 6, annular curb plate 4 is connected at the edge of bottom plate 6, and curb plate 4 is the cylindricality, and the diameter at the top of curb plate 4 equals the diameter of bottom, and the central line of curb plate 4 and the central line coincidence of bottom plate 6 arrange, and curb plate 4 extends along the central line direction of bottom plate 6, connects through curved plate 5 between bottom plate 6 and the curb plate 4, and bottom plate 6, curved plate 5 and curb plate 4 are integrative stamping forming's continuous panel. Curb plate 4 and bottom plate 6 are arranged perpendicularly, and the diameter of the bottom of curb plate 4 is greater than the diameter of bottom plate 6, and the top and the bottom of curved plate 5 are the annular, and the vertical setting in top of curved plate 5 is tangent with curb plate 4, and the bottom level of curved plate 5 is arranged and is tangent with bottom plate 6, and the diameter at 5 tops of curved plate is greater than the diameter of curved plate 5 bottoms, and the cross-section at the middle part of curved plate 5 is the arc. The whole stretching process adopts a stretching male die and a stretching female die which are arranged up and down for stamping, and the backing material 7 is horizontally arranged between the stretching female die and the stretching male die. The top of the stretching female die is provided with a positioning plate 11 for fixing the backing material 7, and the positioning plate 11 is provided with a positioning groove 3. After the side plate 4, the curved plate 5 and the bottom plate 6 of the retainer are punched, the bottom plate 6 is subjected to laser cutting so as to be installed between the inner ring and the outer ring of the bearing, and then window holes for installing rolling bodies are punched on the side plate 4 and are uniformly distributed in the circumferential direction of the side plate 4.

The embodiment also provides a bearing, which comprises an inner ring and an outer ring, wherein the cylindrical bearing retainer is arranged between the inner ring and the outer ring, a rolling body is further arranged between the inner ring and the outer ring, and the rolling body is arranged in a window hole of the cylindrical bearing retainer.

Example 2

The embodiment is different from the embodiment 1 in that the side plate 4 is in a circular truncated cone shape, the diameter of the top of the side plate 4 is larger than that of the bottom, and the top of the curved plate 5 is obliquely arranged and tangent to the side plate 4.

The embodiment also provides a bearing, which comprises an inner ring and an outer ring, wherein the conical retainer is arranged between the inner ring and the outer ring, a rolling body is further arranged between the inner ring and the outer ring, and the rolling body is arranged in a window hole of the conical bearing retainer.

Example 3

A single-row cylindrical roller bearing is a separable bearing, is convenient to mount and dismount, can adopt close fit for an inner ring and an outer ring, is provided with a cylindrical bearing retainer in embodiment 1 between the inner ring and the outer ring, is internally provided with a rolling body in a window hole of the retainer, is in line contact with a raceway, can reduce stress concentration, has large radial load capacity, and is suitable for bearing heavy load and impact load and high-speed rotation. In the embodiment, chamfers are arranged at the edges of the two ends of the rolling body, so that the bearing has high bearing capacity, the lubricating condition of the contact area between the end face of the rolling body and the flange is improved, and the service performance of the bearing is improved. Adopt whole tensile structure, compare traditional processing mode welding process, the intensity of holder is showing and is improving, avoids the holder welding department to press from both sides sediment, gas pocket, do not have phenomenon such as full, has solved the problem of holder fracture. The whole stretching structure is adopted, the stamping processing is convenient, the influence of factors such as welding level, welding materials and environment is avoided, the production efficiency is high, and the batch production is convenient. The device can be applied to large and medium-sized motors, rolling stocks, machine tool spindles, internal combustion engines, generators, gas turbines, reduction boxes, rolling mills, vibrating screens, transportation machines and the like.

Example 4

The utility model provides a stretch forming device, be used for the stretch forming of bearing holder in the above-mentioned embodiment, including die holder 16, install tensile die 13 on the die holder 16, be provided with lower cushion 14 and lower bolster 15 between tensile die 13 and the die holder 16, first passageway 1 has set gradually from the top down in the tensile die 13, second passageway 2 and horizontal mould end 17, the horizontal cross-section of first passageway 1 is circular and the passageway diameter reduces from the top down gradually, the shape of the horizontal cross-section of the passageway of second passageway 2 also is circular, and the diameter is unchangeable or even reduction from the top down, the junction of second passageway 2 and horizontal mould end 17 is provided with the fillet. The top of the stretching female die 13 is provided with a positioning plate 11, the positioning plate 11 is provided with a positioning groove 3, and the central line of the positioning groove 3 coincides with the central lines of the first channel 1 and the second channel 2. A stretching male die 10 is arranged above the stretching female die 13, the shape of the stretching male die 10 is matched with that of the second channel 2 and is cylindrical or truncated cone-shaped, and a round corner is arranged at the edge of the bottom of the stretching male die 10. The top of the stretching male die 10 is connected with the bottom end of an upper cushion block 9, the top end of the upper cushion block 9 is connected with an upper die holder 8, and the upper die holder 8 is connected with a stamping device.

The manufacturing process and principle of the utility model are that the edge of the original round bottom material 7 is stretched towards the direction vertical to the self or the outer side by integral stamping and stretching to form the bottom plate 6 and the side plate 4, and the smooth continuous curved plate 5 is formed at the joint of the bottom plate 6 and the side plate 4 by the shape of the die and is used for connecting the bottom plate 6 and the side plate 4, thereby avoiding the problems of uneven integral property, insufficient strength of welding part and easy cracking and the like existing in the traditional processing modes such as welding and the like, and the utility model can be used for manufacturing a cylindrical retainer and a conical retainer by replacing different dies, cutting the top and the bottom of the side plate 4 after stamping, reserving the side plate 4 as a retainer main body, then carrying out processing operations such as punching holes and the like on the side plate 4, and finally obtaining the retainer.

Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions should be within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure and the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The integral stretching bearing retainer is characterized by comprising a circular bottom plate (6), wherein the edge of the bottom plate (6) is connected with an annular side plate (4), the central line of the side plate (4) is superposed with the central line of the bottom plate (6), the bottom plate (6) is connected with the side plate (4) through a curved plate (5), and the bottom plate (6), the curved plate (5) and the side plate (4) are continuous panels without welding seams.

2. The unitary tension bearing cage of claim 1, wherein: the bottom plate (6), curved plate (5) with curb plate (4) stamping forming as an organic whole, the top and the bottom of curved plate (5) are the annular, the top of curved plate (5) with curb plate (4) are tangent, the bottom level of curved plate (5) arrange and with bottom plate (6) are tangent.

3. The integrated tension bearing cage according to claim 2, wherein the diameter of the bottom of the side plates (4) is larger than the diameter of the bottom plate (6), the diameter of the top of the curved plate (5) is larger than the diameter of the bottom of the curved plate (5), and the cross section of the middle of the curved plate (5) is arc-shaped.

4. The integrated tension bearing cage according to claim 3, wherein the side plates (4) are provided with a plurality of window holes which are evenly distributed along the circumferential direction of the side plates (4), and the window holes are formed by punching.

5. The integrated tension bearing cage according to any of claims 1 to 4, wherein the side plates (4) are cylindrical, and the top diameter of the side plates (4) is equal to the bottom diameter.

6. The integrated tension bearing cage according to any of claims 1 to 4, wherein the side plates (4) are truncated cone-shaped, the top diameter of the side plates (4) being larger than the bottom diameter.

7. A bearing comprising an inner race and an outer race, an integral tensile bearing cage according to any of claims 1 to 6 being provided between said inner race and said outer race, rolling elements being further provided between said inner race and said outer race, said rolling elements being mounted in apertures of said integral tensile bearing cage.

8. A stretch forming device for the integral stretching bearing retainer as claimed in claim 5 or 6, characterized by comprising a stretching female die (13) and a stretching male die (10), wherein the stretching female die (13) comprises a first channel (1), a second channel (2) and a horizontal die bottom (17) which are sequentially connected from top to bottom, the horizontal section of the first channel (1) is circular, the diameter of the channel is gradually reduced from top to bottom, the diameter of the channel of the second channel (2) is unchanged from top to bottom or is uniformly reduced, and a round angle is arranged at the joint of the second channel (2) and the horizontal die bottom (17).

9. The stretch-forming device according to claim 8, characterized in that the shape of the stretching punch (10) is adapted to the second channel (2), and the bottom edge of the stretching punch (10) is provided with rounded corners.

10. The stretch forming device according to claim 9, wherein the stretching female die (13) is arranged above the lower die holder (16), a lower cushion block (15) is arranged between the stretching female die (13) and the lower die holder (16), a positioning plate (11) is arranged above the stretching female die (13), the positioning plate (11) is provided with the positioning groove (3), the stretching male die (10) is connected with the upper die holder (8) through an upper backing plate (9), and the upper die holder (8) is connected with the driving assembly.