Universal type bearing outer ring raceway phosphorization protection device

Abstract

The utility model provides a universal bearing outer ring raceway phosphorization protection device which comprises a base, a seat plate, a cover plate and a locking shaft, a bearing outer ring to be phosphatized is arranged between the seat plate and the cover plate; a seat plate through hole is formed in the seat plate, and the base penetrates through the seat plate through hole and is arranged in a bearing outer ring to be phosphatized; a cover plate through hole is formed in the cover plate, and the locking shaft penetrates through the cover plate through hole to be connected with the base; a first sealing ring is arranged on the circumference of the seat plate and is matched with a chamfer at the tooth position of the outer ring of the bearing to be phosphatized; a second sealing ring is arranged on the circumference of the cover plate and is matched with a chamfer at the other tooth position of the bearing outer ring to be phosphatized; when the bearing outer ring is phosphatized, other parts of the bearing outer ring can be phosphatized normally, and a raceway part is prevented from being phosphatized; the sealing ring angle and the thickness size of the phosphorization protection tool are calculated and designed by analyzing the sizes and the angles of the tooth openings and the chamfers of the bearing outer rings of the same size section, so that the application requirements of the bearing outer rings of different sizes are met, and universality is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bearing phosphating technical field, especially a general bearing outer ring raceway phosphating protection device. BACKGROUND

[0002] In many industries where bearings are applied, the bearing surface must be phosphated for corrosion protection due to the particularity of the working environment (humidity, salt spray, rain). However, high-precision bearings cannot be phosphated at the raceway location due to the high requirements for roughness and profile, which will seriously damage the surface roughness of the raceway and even cause changes in the micro profile. The current solution adopted by most bearing companies is to reserve a machining allowance at the raceway location, then phosphate the entire bearing outer ring, then grind the raceway location to remove the phosphating layer, and finally restore the roughness and profile of the raceway through superfinishing. Although this solution can meet the process requirements of the bearing outer ring, it inevitably causes scratches and peeling of the phosphating layer on the rest of the bearing outer ring during the second grinding process, and increases the processing cost and production cycle by at least 3 processes.

[0003] Although a phosphating protection tool for bearing outer rings has been designed in the early stage, it can only adapt to a single bearing model, and a new phosphating protection tool needs to be redesigned and manufactured if the size of the bearing outer ring changes slightly. Moreover, the original solution has strict requirements for the related dimensions of the bearing outer ring, which easily leads to liquid leakage and causes the protection to fail. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a general bearing outer ring raceway phosphating protection device that can be designed by analyzing the size of the bearing outer ring tooth port and the angle and thickness of the sealing ring to meet the application requirements of different sizes of bearing outer rings and achieve universality.

[0005] To achieve some or all of the above purposes or other purposes, the present application provides the following technical solution: a general bearing outer ring raceway phosphating protection device, comprising a base, a seat plate, a cover plate and a locking shaft; the seat plate and the cover plate are arranged between the phosphating bearing outer ring; the seat plate is provided with a seat plate through hole, and the base is arranged in the phosphating bearing outer ring through the seat plate through hole; the cover plate is provided with a cover plate through hole, and the locking shaft is connected with the base through the cover plate through hole.

[0006] Further, it further comprises a first sealing ring and a second sealing ring; the seat plate is provided with a first sealing ring on the circumference, and the first sealing ring matches the tooth port position chamfer of the phosphating bearing outer ring; the cover plate is provided with a second sealing ring on the circumference, and the second sealing ring matches the chamfer of the other tooth port position of the phosphating bearing outer ring.

[0007] Further, the first sealing ring is made of EPDM rubber material, and the second sealing ring is made of EPDM rubber material.

[0008] Further, the cover plate is provided with an air pressure balance hole, one end of the air pressure balance pipe is connected with the air pressure balance hole, the other end of the air pressure balance pipe is connected with the inflatable ball, and the inflatable ball is made of latex material.

[0009] Further, the base comprises a bottom and a column, the locking shaft comprises a shaft part and a head part, the column and the shaft part are arranged in the bearing outer ring to be phosphated, the column is provided with a threaded hole, and the shaft part is threadedly connected with the column.

[0010] Further, the base further comprises a first connecting part, the bottom and the column are connected through the first connecting part, and the locking shaft further comprises a second connecting part, the shaft part and the head part are connected through the second connecting part.

[0011] Further, the side, away from the base plate, of the cover plate is connected with the second connecting part, an O-shaped sealing ring is arranged between the cover plate and the second connecting part, and the O-shaped sealing ring is embedded in the cover plate.

[0012] Further, the base and the base plate are integrally arranged.

[0013] Further, the assembling method of the universal bearing outer ring raceway phosphating protection device is as follows:

[0014] Step one: selecting appropriate sealing rings according to the diameter size of the tooth port of the bearing outer ring to be phosphated and selecting appropriate locking shafts according to the width size of the bearing outer ring to be phosphated;

[0015] Step two: before phosphating, the base plate provided with the first sealing ring is pressed into the bearing outer ring to be phosphated, the first sealing ring is kept in good contact with the chamfer of the first tooth port of the bearing outer ring, the cover plate provided with the second sealing ring is pressed into the bearing outer ring to be phosphated, the second sealing ring is kept in good contact with the chamfer of the second tooth port of the bearing outer ring, and the position of the O-shaped sealing ring in the groove of the cover plate is kept correct;

[0016] Step three: the locking shaft is inserted into the through hole of the cover plate and connected with the base.

[0017] Compared with the prior art, the phosphating protection device has the advantages that not only the bearing outer ring raceway phosphating can be avoided, but also the quality problems caused by uneven phosphating of the tooth port of the outer ring can be avoided, the whole inner diameter of the bearing outer ring is protected, and the protection quality is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structure schematic view of the phosphating protection device installed on the cylindrical roller bearing outer ring without a flange to be phosphated.

[0019] Figure 2 For Figure 1 Figure 2 is an enlarged schematic view of the connection part of the first tooth and the first sealing ring of the non-lip outer ring of the cylindrical roller bearing to be phosphated in the embodiment of the present application;

[0020] Figure 3 Figure 3 is a schematic view of the structure of the outer ring of the tapered roller bearing to be phosphated in the embodiment of the present application;

[0021] Figure 4 For Figure 3 Figure 4 is an enlarged schematic view of the connection part of the first tooth and the first sealing ring of the outer ring of the tapered roller bearing to be phosphated in the embodiment of the present application;

[0022] Figure 5 Figure 5 is a schematic view of the structure of the outer ring of the tapered roller bearing to be phosphated in the embodiment of the present application;

[0023] Figure 6 For Figure 5 Figure 6 is an enlarged schematic view of the connection part of the first tooth and the first sealing ring of the outer ring of the tapered roller bearing to be phosphated in the embodiment of the present application;

[0024] In the figure: 1, base; 101, stand; 102, bottom; 103, first connection part; 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 part; 402, head part; 403, second connection part; 501, non-lip outer ring of cylindrical roller bearing to be phosphated; 502, outer ring of cylindrical roller bearing to be phosphated with lip; 503, outer ring of tapered roller bearing to be phosphated; 11, first tooth; 12, second tooth; 601, first sealing ring; 602, second sealing ring; 7, air pressure balance pipe; 8, expansion ball; 9, O-shaped sealing ring. DETAILED DESCRIPTION

[0025] In order to make the structure and function of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application.

[0026] Embodiment 1

[0027] Referring to the drawings, Figures 1-2 A universal bearing outer ring raceway phosphating protection device, comprising a base 1, a seat plate 2, a cover plate 3 and a locking shaft 4; the seat plate 2 and the cover plate 3 are provided with bearing outer rings to be phosphated therebetween; the seat plate 2 is provided with a seat plate through hole 201, and the base 1 is arranged in the bearing outer rings to be phosphated by penetrating through the seat plate through hole 201; the cover plate 3 is provided with a cover plate through hole 301, and the locking shaft 4 is connected with the base 1 by penetrating 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 rings to be phosphated; the bearing outer rings to be phosphated are non-lip outer rings 501 of cylindrical roller bearings to be phosphated.

[0028] Also including a first sealing ring 601 and a second sealing ring 602; the seat plate 2 is provided with the first sealing ring 601 on the circumference, the first sealing ring 601 matches the chamfer of the first tooth opening 11 of the cylindrical roller bearing without flange outer ring 501 to be phosphated; the cover plate 3 is provided with the second sealing ring 602 on the circumference, the second sealing ring 602 matches the chamfer of the second tooth opening 12 of the cylindrical roller bearing without flange outer ring 501 to be phosphated; the chamfer of the tooth opening position is designed for general bearing outer ring; the structure, size and angle of the first sealing ring 601 conforming to the expansion characteristics of EPDM rubber are calculated according to the specific size of the first tooth opening 11 of the bearing outer ring; the structure, size and angle of the second sealing ring 602 conforming to the expansion characteristics of EPDM rubber are calculated according to the specific size of the second tooth opening 12 of the bearing outer ring.

[0029] The universal bearing outer ring raceway phosphating protection device realizes the adaptation to bearing outer rings of different sizes by designing the structure, size and angle of the sealing ring, so as to realize the phosphating protection of products of the same size by using the same tooling, thereby saving a large amount of tooling procurement cost.

[0030] The first sealing ring 601 is made of EPDM rubber material, and the second sealing ring 602 is made of EPDM rubber material; the phosphating working temperature is between 20℃ and 95℃, and EPDM rubber has the characteristics of heat resistance and acid resistance.

[0031] Also including a gas pressure balance pipe 7 and an expansion ball 8; the cover plate 3 is provided with a gas pressure balance hole 302, one end of the gas pressure balance pipe 7 is connected to the gas pressure balance hole 302, the other end of the gas pressure balance pipe 7 is connected to the expansion ball 8, the expansion ball 8 is made of latex material; the other end of the gas pressure balance hole 302 is communicated with the atmosphere; the gas pressure balance pipe 7 and the expansion ball 8 are arranged inside the cavity of the bearing outer ring to be phosphated.

[0032] The expansion ball 8 has a volume when it is installed, the thickness of the expansion ball 8 is relatively thick, and it can maintain the expanded shape by itself, and it will only be deformed to exhaust when it is pressed; during phosphating, the temperature inside the bearing outer ring rises, the internal gas expands, and the expansion ball 8 is compressed, the internal gas of the expansion ball 8 is exhausted into the atmosphere through the gas pressure balance hole 302, and the pressure inside the bearing outer ring is balanced. When the temperature decreases, the internal pressure decreases, and the expansion ball 8 will suck the atmospheric gas into the ball body, the ball body becomes larger, and the internal pressure of the bearing outer ring is balanced; the expansion ball 8 realizes the effect that the phosphating liquid outside cannot enter the sealed cavity; because the expansion ball 8 does not directly contact the high-temperature acidic environment, the material selection range is wide, and the material with the highest cost performance can be selected.

[0033] The base 1 comprises a bottom 102 and a column 101; the locking shaft 4 comprises a shaft part 401 and a head part 402; the column 101 and the shaft part 401 are arranged in a bearing outer ring to be phosphated, the column 101 is provided with a threaded hole, the shaft part is provided with an external thread, and the external thread of the shaft part is connected with the internal thread of the column; the internal threaded hole of the column 101 has a certain length to adapt to the various lengths of the shaft part 401 of the locking shaft 4 threaded into the column 101.

[0034] The base 1 further comprises a first connecting part 103, and the bottom 102 and the column 101 are connected through the first connecting part 103; the locking shaft 4 further comprises a second connecting part 403, and the shaft part 401 and the head part 402 are connected through the second connecting part 403; the first connecting part 103 and the second connecting part 403 can function as a hanging ear; the head part 402 is provided with a hanging hole, which facilitates pulling out the locking shaft 4 from the bearing outer ring to be phosphated.

[0035] The cover plate 3 is connected with the second connecting part 403 away from the seat plate 2, and an O-shaped sealing ring 9 is arranged between the cover plate 3 and the second connecting part 403, and the O-shaped sealing ring 9 is embedded in the cover plate 3; which prevents external oil from entering the internal sealing cavity.

[0036] The base 1 and the seat plate 2 are integrally arranged.

[0037] The assembly method of the universal bearing outer ring raceway phosphating protection device is as follows:

[0038] Step one: select a suitable first sealing ring according to the diameter size of the first tooth opening of the bearing outer ring to be phosphated, select a suitable second sealing ring according to the diameter size of the second tooth opening of the bearing outer ring to be phosphated, and select a suitable locking shaft according to the width size of the bearing outer ring to be phosphated;

[0039] Step two: before phosphating, press the seat plate sleeved with the first sealing ring into the bearing outer ring to be phosphated, and keep the first sealing ring in good contact with the chamfer of the first tooth opening of the bearing outer ring; press the cover plate sleeved with the second sealing ring into the bearing outer ring to be phosphated, and keep the second sealing ring in good contact with the chamfer of the second tooth opening of the bearing outer ring; and confirm that the O-shaped sealing ring is correctly positioned in the groove of the cover plate;

[0040] Step three: insert the locking shaft 4 into the cover plate through hole 301 and connect it with the base 1.

[0041] Example 2

[0042] Referring to the accompanying drawings Figures 3-4, the embodiment 2 is basically same with the embodiment 1, the bearing outer ring to be phosphorized is the cylindrical roller bearing outer ring with a flange 502 to be phosphorized, a first sealing ring 601 is arranged on the circumference of the seat plate 2, the first sealing ring 601 is matched with the chamfer of the first tooth opening 11 of the cylindrical roller bearing outer ring with a flange 502 to be phosphorized, a second sealing ring 602 is arranged on the circumference of the cover plate 3, the second sealing ring 602 is matched with the chamfer of the second tooth opening 12 of the cylindrical roller bearing outer ring with a flange 502 to be phosphorized, the other end of the air pressure balance hole 302 is communicated with the cavity of the bearing outer ring to be phosphorized, the air pressure balance pipe 7 and the expansion ball 8 are arranged outside the cavity of the bearing outer ring to be phosphorized, and the expansion ball 8 is made of heat-resistant and acid-resistant material.

[0043] Embodiment 3

[0044] Referring to the accompanying drawings Figures 5-6 , the embodiment 3 is basically same with the embodiment 1, the bearing outer ring to be phosphorized is the tapered roller bearing outer ring 503 to be phosphorized, a first sealing ring 601 is arranged on the circumference of the seat plate 2, the first sealing ring 601 is matched with the chamfer of the first tooth opening 11 of the tapered roller bearing outer ring 503 to be phosphorized, a second sealing ring 602 is arranged on the circumference of the cover plate 3, and the second sealing ring 602 is matched with the chamfer of the second tooth opening 12 of the tapered roller bearing outer ring 503 to be phosphorized.

[0045] The bearing outer ring can be a cylindrical roller bearing outer ring with a flange, a cylindrical roller bearing outer ring without a flange or a tapered roller bearing outer ring, so that the universality is realized.

[0046] The sealing ring angle and thickness size of the phosphating protection tool are calculated and designed by analyzing the tooth opening diameter size of the bearing outer ring of the same size section, so that the application demand of the bearing outer rings of different sizes is met, and the universality is realized. Meanwhile, the device can protect the tooth opening position from being phosphated, reduces the size and roughness influence of the tooth opening in the process of pressing the oil seal, and has certain additional advantages.

[0047] The advantages of the application are as follows: 1, the device is designed for the raceway protection demand of the bearing outer ring in the phosphating process, can make other parts of the outer ring normally phosphated, and the raceway and tooth opening position are avoided from being phosphated.

[0048] 2, the device adopts the extrusion and dense sealing mode of the heat-resistant and acid-resistant sealing ring, and the overall structure can ensure the stability of the sealing. The phosphating liquid is prevented from penetrating into the raceway, so that the purpose of avoiding the raceway from being phosphated is achieved. The device can be used for different types of bearing outer rings in the same size section, and the universality is realized.

[0049] 3, by using the device, any mechanism of the phosphating equipment does not need to be changed, the device can be self-adapted to the phosphating equipment. The device is simple and convenient to install and disassemble, has low manufacturing cost, can adapt to large-scale production, and cancels the complex and tedious reverse order grinding processing.

[0050] The above merely provides the preferred embodiment of the application, and cannot allude the scope of the application; therefore, any equivalent changes made according to the claims of the application shall still fall within the scope of the application.

Claims

1. A universal bearing cone race phosphating protector characterized by: It includes a base, a seat plate, a cover plate and a locking shaft; the seat plate and the cover plate are provided with a bearing outer ring to be phosphated; the seat plate is provided with a seat plate through hole, and the base is arranged in the bearing outer ring through the seat plate through hole; the cover plate is provided with a cover plate through hole, and the locking shaft is connected with the base through the cover plate through hole.

2. A universal bearing cone race phosphating protector according to claim 1, characterized in that: It also includes a first sealing ring and a second sealing ring; the seat plate is provided with the first sealing ring on the circumference, and the first sealing ring is matched with the chamfer of the tooth opening position of the bearing outer ring to be phosphated; the cover plate is provided with the second sealing ring on the circumference, and the second sealing ring is matched with the chamfer of another tooth opening position of the bearing outer ring to be phosphated.

3. A universal bearing cone race phosphating protector according to claim 2, wherein: The first sealing ring is made of EPDM rubber material, and the second sealing ring is made of EPDM rubber material.

4. A universal bearing cone race phosphating protector according to claim 1, wherein: It also includes an air pressure balance pipe and an expansion ball; the cover plate is provided with an air pressure balance hole, one end of the air pressure balance pipe is connected with the air pressure balance hole, the other end of the air pressure balance pipe is connected with the expansion ball, and the expansion ball is made of latex material.

5. A universal bearing cone race phosphating protector according to claim 1, wherein: The base includes a bottom and a column; the locking shaft includes a shaft part and a head part; the column and the shaft part are arranged in the bearing outer ring to be phosphated, the column is provided with a threaded hole, and the shaft part is threadedly connected with the column.

6. A universal bearing cone race phosphating protector according to claim 5, wherein: The base also includes a first connecting part, and the bottom and the column are connected through the first connecting part; the locking shaft also includes a second connecting part, and the shaft part and the head part are connected through the second connecting part.

7. A universal bearing cone race phosphating protector according to claim 6, wherein: The cover plate is connected with the second connecting part away from the seat plate, an O-shaped sealing ring is arranged between the cover plate and the second connecting part, and the O-shaped sealing ring is embedded in the cover plate.

8. A universal bearing cone race phosphating protector according to claim 1, wherein: The base and the seat plate are integrally arranged.

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