Universal type bearing outer ring raceway phosphorization protection device
By designing a universal bearing outer ring raceway phosphating protection device, the sealing ring design is used to adapt to the bearing outer rings of different sizes, the problem of uneven phosphating of raceways and teeth mouth positions during bearing phosphating is solved, and efficient protection effect and production efficiency are achieved.
Patent Information
- Application Number
- CN202411776279.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-03-11
AI Technical Summary
The prior art is difficult to meet the roughness and contour requirements of high-precision bearing raceways during bearing phosphating, resulting in the phosphating layer destroying the raceway surface and increasing processing costs and production cycles.
A universal bearing outer ring raceway phosphating protection device is designed. By analyzing the teeth and chamfered sizes of the bearing outer ring of the same size segment, the angle and thickness of the designed sealing ring are calculated to meet the needs of bearing outer rings of different sizes and achieve universality.
This device can effectively avoid the problems of uneven phosphating of the raceway of the bearing outer ring and the phosphating of the tooth mouth position, protect the inner diameter of the bearing outer ring, improve the protection quality, and reduce processing costs and production cycles.
Smart Images
Figure CN119592935A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of bearing phosphating, in particular to a universal bearing outer ring raceway phosphating protective device. Background Art
[0002] In many industries where bearings are used, the bearing surface must be phosphated for corrosion protection due to the particularity of the working environment (humidity, salt spray, rain). However, due to the high requirements for the roughness and contour of the raceway of high-precision bearings, the phosphating process cannot be performed at these locations. The phosphating layer will seriously damage the surface roughness of the raceway and even cause changes in the microscopic contour. The solution currently adopted by the vast majority of the bearing industry is to reserve a processing allowance at the raceway position in advance, then perform an overall phosphating treatment on the outer ring of the bearing, then grind the raceway position to remove the phosphating layer, and finally restore the roughness and contour of the raceway through the super-finishing process. Although this solution can meet the various process requirements of the outer ring of the bearing, it will inevitably cause the phosphating layer on the remaining surface of the outer ring of the bearing to be scratched and fall off during the secondary grinding process, and at least three additional processes have been added, resulting in a significant increase in processing costs and production cycles.
[0003] Although there was a phosphating protective tooling designed for the outer ring of the bearing in the early stage, it can only adapt to a single bearing model. If the size of the outer ring of the bearing changes slightly, a new phosphating protective tooling needs to be redesigned and manufactured. In addition, the original plan has strict requirements on the relevant dimensions of the outer ring of the bearing, which is very likely to cause leakage and lead to protection failure. Summary of the invention
[0004] In view of the above problems, the purpose of this application is to provide a universal bearing outer ring raceway phosphating protection device, so that it can calculate and design the sealing ring angle and thickness size of the phosphating protection tooling by analyzing the thread and chamfer dimensions of the bearing outer ring of the same size segment, so as to meet the application needs of bearing outer rings of different sizes and achieve universality.
[0005] In order to achieve some or all of the above-mentioned purposes or other purposes, the present application provides the following technical solutions: a universal bearing outer ring raceway phosphating protection device, comprising a base, a seat plate, a cover plate and a locking shaft; a bearing outer ring to be phosphated is arranged between the seat plate and the cover plate; a seat plate through hole is arranged on the seat plate, and the base is arranged in the bearing outer ring to be phosphated through the seat plate through hole; a cover plate through hole is arranged on the cover plate, and the locking shaft passes through the cover plate through hole and is connected to the base.
[0006] Furthermore, it also includes a No. 1 sealing ring and a No. 2 sealing ring; a No. 1 sealing ring is arranged on the circumference of the seat plate, and the No. 1 sealing ring matches the chamfer of the tooth position of the outer ring of the bearing to be phosphated; a No. 2 sealing ring is arranged on the circumference of the cover plate, and the No. 2 sealing ring matches the other chamfer of the tooth position of the outer ring of the bearing to be phosphated.
[0007] Furthermore, the No. 1 sealing ring is made of EPDM rubber material, and the No. 2 sealing ring is made of EPDM rubber material.
[0008] Furthermore, it also includes an air pressure balance tube and an expansion ball; an air pressure balance hole is arranged on the cover plate, one end of the air pressure balance tube is connected to the air pressure balance hole, and the other end of the air pressure balance tube is connected to the expansion ball, and the expansion ball is made of latex material.
[0009] Furthermore, the base includes a bottom and a column; the locking shaft includes a shaft portion and a head portion; the column and the shaft portion are arranged in the outer ring of the bearing to be phosphated, a threaded hole is arranged in the column, and the shaft portion is threadedly connected to the column.
[0010] Furthermore, the base also includes a No. 1 connection part, and the bottom is connected to the column through the No. 1 connection part; the locking shaft also includes a No. 2 connection part, and the shaft is connected to the head through the No. 2 connection part.
[0011] Furthermore, the cover plate is connected to the second connection part at one side away from the seat plate, an O-ring is arranged between the cover plate and the second connection part, and the O-ring is embedded in the cover plate.
[0012] Furthermore, the base and the seat plate are integrated.
[0013] Furthermore, the assembly method of the universal bearing outer ring raceway phosphating protection device is as follows: Step 1: Select a suitable sealing ring according to the diameter of the outer ring of the bearing to be phosphated, and select a suitable locking shaft according to the width of the outer ring of the bearing to be phosphated; Step 2: Before phosphating, press the seat plate with No. 1 sealing ring into the outer ring of the bearing to be phosphated, and keep the No. 1 sealing ring in good contact with the No. 1 chamfer of the outer ring of the bearing; press the cover plate with No. 2 sealing ring into the outer ring of the bearing to be phosphated, and keep the No. 2 sealing ring in good contact with the No. 2 chamfer of the outer ring of the bearing; confirm that the O-ring is correctly positioned in the groove of the cover plate; Step 3: Insert the locking shaft through the through hole of the cover and connect it to the base.
[0014] Compared with the prior art, the beneficial effects of the present invention are: not only can phosphating of the bearing outer ring raceway be avoided, but also quality problems caused by uneven phosphating of the outer ring tooth position can be avoided. The inner diameter of the bearing outer ring is protected as a whole, greatly improving the protection quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of the non-ribbed outer ring of the cylindrical roller bearing to be phosphated installed in this application; Figure 2 for Figure 1An enlarged schematic diagram of the connection between the No. 1 thread of the outer ring without ribs and the No. 1 sealing ring of the cylindrical roller bearing to be phosphated; Figure 3 This is a schematic diagram of the structure of the outer ring with flange installed on the cylindrical roller bearing to be phosphated; Figure 4 for Figure 3 An enlarged schematic diagram of the connection between the No. 1 thread of the outer ring of the cylindrical roller bearing to be phosphated and the No. 1 sealing ring; Figure 5 This is a schematic diagram of the structure installed on the outer ring of the tapered roller bearing to be phosphated for this application; Figure 6 for Figure 5 An enlarged schematic diagram of the connection between the No. 1 thread of the outer ring of the tapered roller bearing to be phosphated and the No. 1 sealing ring; In the figure: 1, base; 101, column; 102, bottom; 103, No. 1 connection; 2, seat plate; 201, seat plate through hole; 3, cover plate; 301, cover plate through hole; 302, air pressure balance hole; 4, locking shaft; 401, shaft; 402, head; 403, No. 2 connection; 501, outer ring without flange of cylindrical roller bearing to be phosphated; 502, outer ring with flange of cylindrical roller bearing to be phosphated; 503, outer ring of tapered roller bearing to be phosphated; 11, No. 1 thread; 12, No. 2 thread; 601, No. 1 sealing ring; 602, No. 2 sealing ring; 7, air pressure balance tube; 8, expansion ball; 9, O-ring. DETAILED DESCRIPTION
[0016] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0017] Example 1 See attached Figure 1-2 A universal bearing outer ring raceway phosphating protection device comprises a base 1, a base plate 2, a cover plate 3 and a locking shaft 4; a bearing outer ring to be phosphated is arranged between the base plate 2 and the cover plate 3; a base plate through hole 201 is arranged on the base plate 2, and the base 1 is arranged in the bearing outer ring to be phosphated through the base plate through hole 201; a cover plate through hole 301 is arranged on the cover plate 3, and the locking shaft 4 is connected to the base 1 through the cover plate through hole 301; the structure and size of the locking shaft 4 are designed according to the specific width size of the bearing outer ring to be phosphated; the bearing outer ring to be phosphated is a cylindrical roller bearing outer ring 501 without a flange to be phosphated.
[0018] It also includes a No. 1 sealing ring 601 and a No. 2 sealing ring 602; a No. 1 sealing ring 601 is arranged on the circumference of the seat plate 2, and the No. 1 sealing ring 601 matches the chamfer of the No. 1 thread 11 position of the outer ring 501 without a flange of the cylindrical roller bearing to be phosphated; a No. 2 sealing ring 602 is arranged on the circumference of the cover plate 3, and the No. 2 sealing ring 602 matches the chamfer of the No. 2 thread 12 position of the outer ring 501 without a flange of the cylindrical roller bearing to be phosphated; the chamfering of the thread position is a universal design for the outer ring of the bearing; the structure, size and angle of the No. 1 sealing ring 601 that meets the expansion characteristics of EPDM rubber are calculated according to the specific size of the No. 1 thread 11 of the outer ring of the bearing; the structure, size and angle of the No. 2 sealing ring 602 that meets the expansion characteristics of EPDM rubber are calculated according to the specific size of the No. 2 thread 12 of the outer ring of the bearing.
[0019] The universal bearing outer ring raceway phosphating protection device can adapt to different sizes of bearing outer rings by designing the structure, size and angle of the sealing ring, so that products of the same size segment can use the same tooling to achieve phosphating protection, saving a lot of tooling procurement costs.
[0020] The No. 1 sealing ring 601 is made of EPDM rubber material, and the No. 2 sealing ring 602 is made of EPDM rubber material; the phosphating working temperature is between 20° C. and 95° C., and EPDM rubber has the characteristics of heat resistance and acid resistance.
[0021] It also includes an air pressure balance tube 7 and an expansion ball 8; an air pressure balance hole 302 is arranged on the cover plate 3, one end of the air pressure balance tube 7 is connected to the air pressure balance hole 302, and the other end of the air pressure balance tube 7 is connected to the expansion ball 8, and the expansion ball 8 is made of latex; the other end of the air pressure balance hole 302 is connected to the atmosphere; the air pressure balance tube 7 and the expansion ball 8 are arranged inside the cavity of the outer ring of the bearing to be phosphated.
[0022] The expansion ball 8 has volume when it is installed. The expansion ball 8 is relatively thick and can maintain its expanded shape. It will only deform and exhaust when it is under pressure. During phosphating, the temperature inside the outer ring of the bearing rises, and the internal gas expands, which will compress the expansion ball 8. The internal gas of the expansion ball 8 is discharged into the atmosphere through the air pressure balance hole 302, and the internal pressure of the outer ring of the bearing is balanced. When the temperature drops and the internal pressure decreases, the expansion ball 8 will absorb atmospheric gas into the ball, and the ball will become larger, balancing the internal air pressure of the outer ring of the bearing. The expansion ball 8 achieves the effect that the external phosphating liquid cannot enter the inside of the sealed cavity. Because the expansion ball 8 does not directly contact the high-temperature acidic environment, it has a wide range of selection and can choose the most cost-effective material.
[0023] The base 1 includes a bottom 102 and a column 101; the locking shaft 4 includes a shaft 401 and a head 402; the column 101 and the shaft 401 are arranged in the outer ring of the bearing to be phosphated, a threaded hole is arranged in the column 101, and the shaft is arranged with an external thread, and the external thread of the shaft is connected with the internal thread of the column; the internal threaded hole of the column 101 has a certain length to adapt to various lengths of the shaft 401 of the locking shaft 4 threadedly inserted into the column 101.
[0024] The base 1 also includes a No. 1 connection part 103, and the bottom 102 is connected to the column 101 through the No. 1 connection part 103; the locking shaft 4 also includes a No. 2 connection part 403, and the shaft 401 is connected to the head 402 through the No. 2 connection part 403; the No. 1 connection part 103 and the No. 2 connection part 403 can act as hanging ears; a hanging hole is provided on the head 402 to facilitate pulling out the locking shaft 4 from the outer ring of the bearing to be phosphated.
[0025] The cover plate 3 is connected to the second connection part 403 at one side away from the seat plate 2, and an O-ring 9 is arranged between the cover plate 3 and the second connection part 403, and the O-ring 9 is embedded in the cover plate 3 to prevent external oil from entering the sealing cavity.
[0026] The base 1 and the seat plate 2 are integrally arranged.
[0027] The assembly method of the universal bearing outer ring raceway phosphating protection device is as follows: Step 1: Select a suitable No. 1 sealing ring according to the diameter size of the No. 1 thread of the outer ring of the bearing to be phosphated, and select a suitable No. 2 sealing ring according to the diameter size of the No. 2 thread of the outer ring of the bearing to be phosphated; select a suitable locking shaft according to the width size of the outer ring of the bearing to be phosphated; Step 2: Before phosphating, press the seat plate with No. 1 sealing ring into the outer ring of the bearing to be phosphated, and keep the No. 1 sealing ring in good contact with the No. 1 chamfer of the outer ring of the bearing; press the cover plate with No. 2 sealing ring into the outer ring of the bearing to be phosphated, and keep the No. 2 sealing ring in good contact with the No. 2 chamfer of the outer ring of the bearing; confirm that the O-ring is correctly positioned in the groove of the cover plate; Step three: insert the locking shaft 4 from the cover plate through hole 301 and connect it to the base 1 .
[0028] Example 2 See attached Figure 3-4Embodiment 2 is basically the same as embodiment 1, and the outer ring of the bearing to be phosphated is a cylindrical roller bearing with a flange outer ring 502 to be phosphated; a No. 1 sealing ring 601 is arranged on the circumference of the seat plate 2, and the No. 1 sealing ring 601 matches the chamfer of the No. 1 tooth 11 position of the cylindrical roller bearing with a flange outer ring 502 to be phosphated; a No. 2 sealing ring 602 is arranged on the circumference of the cover plate 3, and the No. 2 sealing ring 602 matches the chamfer of the No. 2 tooth 12 position of the cylindrical roller bearing with a flange outer ring 502 to be phosphated; the other end of the air pressure balance hole 302 is connected to the outer ring cavity of the bearing to be phosphated; the air pressure balance tube 7 and the expansion ball 8 are arranged outside the outer ring cavity of the bearing to be phosphated; the expansion ball 8 is made of heat-resistant and acid-resistant materials.
[0029] Example 3 See attached Figure 5-6 Embodiment 3 is basically the same as Embodiment 1, and the outer ring of the bearing to be phosphated is the outer ring 503 of the tapered roller bearing to be phosphated; a No. 1 sealing ring 601 is arranged on the circumference of the seat plate 2, and the No. 1 sealing ring 601 matches the chamfer of the No. 1 tooth opening 11 position of the tapered roller bearing outer ring 503 to be phosphated; a No. 2 sealing ring 602 is arranged on the circumference of the cover plate 3, and the No. 2 sealing ring 602 matches the chamfer of the No. 2 tooth opening 12 position of the tapered roller bearing outer ring 503 to be phosphated.
[0030] The outer ring of the bearing can be a cylindrical roller bearing outer ring with ribs, a cylindrical roller bearing outer ring without ribs, or a tapered roller bearing outer ring to achieve universality.
[0031] By analyzing the diameter of the tooth mouth of the bearing outer ring of the same size segment, the angle and thickness of the sealing ring of the phosphating protection tooling are calculated and designed to meet the application requirements of the outer rings of bearings of different sizes and achieve versatility. At the same time, the device can protect the tooth mouth from being phosphated, reduce the influence of the size and roughness of the tooth mouth during the press-fitting oil seal process, and bring certain additional advantages.
[0032] The advantages of the present application are: 1. The present device is designed for the needs of raceway protection of the outer ring of the bearing during phosphating, so that other parts of the outer ring can be phosphated normally during phosphating while the raceway and the tooth position are prevented from phosphating.
[0033] 2. This device uses heat-resistant and acid-resistant sealing rings to squeeze and seal, and the overall structure can ensure the stability of the seal. It prevents the phosphating liquid from penetrating into the raceway to prevent the raceway from being phosphated. This device can be used for different types of bearing outer rings within the same size range to achieve universality.
[0034] 3. The device can adapt to the phosphating equipment without changing any mechanism of the phosphating equipment. It is easy to install and disassemble, has low manufacturing cost, can adapt to large-scale production, and eliminates the complicated and cumbersome reverse grinding process.
[0035] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.
Claims
1. Universal bearing outer ring raceway phosphating protection device, characterized by: It includes a base, a base plate, a cover plate and a locking shaft; the outer ring of the bearing to be phosphated is arranged between the base plate and the cover plate; a base plate through hole is arranged on the base plate, and the base passes through the base plate through hole and is arranged in the outer ring of the bearing to be phosphated; a cover plate through hole is arranged on the cover plate, and the locking shaft passes through the cover plate through hole and is connected to the base.
2. The universal bearing outer ring raceway phosphating protection device according to claim 1 is characterized in that: It also includes a No. 1 sealing ring and a No. 2 sealing ring; the No. 1 sealing ring is arranged on the circumference of the seat plate, and the No. 1 sealing ring matches the chamfer of the tooth position of the outer ring of the bearing to be phosphated; the No. 2 sealing ring is arranged on the circumference of the cover plate, and the No. 2 sealing ring matches the other chamfer of the tooth position of the outer ring of the bearing to be phosphated.
3. The universal bearing outer ring raceway phosphating protection device according to claim 2 is characterized in that: The No. 1 sealing ring is made of EPDM rubber material, and the No. 2 sealing ring is made of EPDM rubber material.
4. The universal bearing outer ring raceway phosphating protection device according to claim 1 is characterized in that: It also includes an air pressure balance tube and an expansion ball; an air pressure balance hole is arranged on the cover plate, one end of the air pressure balance tube is connected to the air pressure balance hole, and the other end of the air pressure balance tube is connected to the expansion ball, and the expansion ball is made of latex material.
5. The universal bearing outer ring raceway phosphating protection device according to claim 1 is characterized in that: The base includes a bottom and a column; the locking shaft includes a shaft and a head; the column and the shaft are arranged in the outer ring of the bearing to be phosphated, a threaded hole is arranged in the column, and the shaft is threadedly connected to the column.
6. The universal bearing outer ring raceway phosphating protection device according to claim 5 is characterized in that: The base also includes a No. 1 connection part, and the bottom is connected to the column through the No. 1 connection part; the locking shaft also includes a No. 2 connection part, and the shaft is connected to the head through the No. 2 connection part.
7. The universal bearing outer ring raceway phosphating protection device according to claim 6 is characterized in that: The cover plate is connected to the second connection part at one side away from the seat plate, an O-ring is arranged between the cover plate and the second connection part, and the O-ring is embedded in the cover plate.
8. The universal bearing outer ring raceway phosphating protection device according to claim 1 is characterized in that: The base and the seat plate are integrally arranged.
9. The assembly method of the universal bearing outer ring raceway phosphating protection device according to claim 2 is characterized in that: The assembly method is as follows: Step 1: Select a suitable sealing ring according to the diameter of the outer ring of the bearing to be phosphated, and select a suitable locking shaft according to the width of the outer ring of the bearing to be phosphated; Step 2: Before phosphating, press the seat plate with No. 1 sealing ring into the outer ring of the bearing to be phosphated, and keep the No. 1 sealing ring in good contact with the No. 1 chamfer of the outer ring of the bearing; press the cover plate with No. 2 sealing ring into the outer ring of the bearing to be phosphated, and keep the No. 2 sealing ring in good contact with the No. 2 chamfer of the outer ring of the bearing; confirm that the O-ring is correctly positioned in the groove of the cover plate; Step 3: Insert the locking shaft through the through hole of the cover and connect it to the base.