CN114378229A - Ring rolls core roller assembly - Google Patents
Ring rolls core roller assembly Download PDFInfo
- Publication number
- CN114378229A CN114378229A CN202111429135.6A CN202111429135A CN114378229A CN 114378229 A CN114378229 A CN 114378229A CN 202111429135 A CN202111429135 A CN 202111429135A CN 114378229 A CN114378229 A CN 114378229A
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- Prior art keywords
- roller
- core
- core roller
- bearing
- ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
The utility model provides a ring rolls core roller assembly, includes core roller, roller shell, upper end bearing group, core roller upper bracket, lower extreme bearing group and core roller lower bracket, on the upper end direction of the directional core roller of midpoint point of core roller, upper end bearing group thrust self-aligning roller bearing on including self-aligning roller bearing, first upper thrust self-aligning roller bearing and the second in proper order, upper end bearing group suit is on the roller shell of core roller upper end. When the upper core roller seat moves horizontally relative to the lower core roller seat, the core roller deflects angularly, the upper part of the core roller rotates along the center of the upper self-aligning roller bearing along with the upper roller sleeve, simultaneously the backing ring and the first upper thrust self-aligning roller bearing rotate, and the ball seat, the second upper thrust self-aligning roller bearing, the spacer ring and the locking nut rotate along the rotation center of the spherical pad; and realizing the angular deflection of the upper part of the core roller. The angular deflection of the core roller can effectively prevent the phenomenon that a workpiece climbs the roller in the ring rolling process of the ring rolling mill, and meanwhile, the special-shaped ring piece with the inner wall having the angle can be rolled without replacing the core roller.
Description
Technical Field
The invention relates to the technical field of ring rolling mill equipment, in particular to a core roller assembly of a ring rolling mill.
Background
The ring rolling machine is used for reaming equipment needed when a workpiece with a through hole is machined, the ring rolling machine can be divided into a vertical ring rolling machine and a horizontal ring rolling machine according to the form of a rack and the position of a ring piece, and the inclined vertical ring rolling machine is derived for convenience in operation. When the ring rolling machine is used for hole increasing and hole expanding of the ring piece, the main roller rotates to drive the ring piece on the core roller to rotate together, so that the hole increasing and hole expanding are realized.
In a traditional ring rolling mill, core rollers are fixedly arranged on a frame of the ring rolling mill. In the installation mode, when the ring is in contact with the core roller to rotate, the ring and the core roller are in a friction type structure, and the ring and the core roller are easily abraded. In order to solve the wear problem, the skilled person has designed the core roll to be of a rotatable construction, so that wear of the core roll and the ring is completely avoided.
However, in the prior art, the core roller is mounted on the frame by adopting the bearing seat, the stress of the core roller in the working process is complex and can be divided into axial stress and radial stress, and the bearing seat can only provide single support (bearing radial force or axial force), so that the deformation of the core roller structure and the premature damage of the bearing seat can be caused in the long-term working process due to the unbalanced stress of the core roller.
Disclosure of Invention
Problem (A)
In summary, how to provide a novel core roller mounting structure of a ring rolling mill to reduce the deformation degree of the core roller is a problem to be solved by those skilled in the art.
(II) technical scheme
The invention provides a ring mill core roller assembly, which comprises:
the core roller is provided with a stop end at one end;
the two roller sleeves are respectively sleeved at two ends of the core roller;
the upper end bearing group sequentially comprises an upper aligning roller bearing, a first upper thrust aligning roller bearing and a second upper thrust aligning roller bearing in the direction that the midpoint of the core roller points to the upper end of the core roller, and the upper end bearing group is sleeved on the roller sleeve at the upper end of the core roller;
the upper end bearing group is arranged on the upper core roller seat, and two ends of the upper core roller seat are provided with pressing covers for assembling the upper end bearing group in the upper core roller seat;
the lower end bearing group sequentially comprises a lower aligning roller bearing and a lower thrust aligning roller bearing in the direction that the midpoint of the core roller points to the lower end of the core roller;
the lower end bearing group is arranged on the lower core roller seat, and the two ends of the lower core roller seat are provided with pressing covers for assembling the lower end bearing group in the lower core roller seat.
Preferably, in the ring mill core roller assembly provided by the invention, a spherical cushion and a ball seat in sliding fit with the spherical cushion are arranged between the first upper self-aligning thrust roller bearing and the second upper self-aligning thrust roller bearing; the ball seat is provided with a ball seat sliding surface with a concave spherical structure, the spherical pad is provided with a spherical pad sliding surface with a convex spherical structure, and the spherical pad sliding surface is in sliding fit with the ball seat sliding surface; the spherical center of the spherical seat sliding surface is superposed with the centroid of the upper self-aligning roller bearing, and the spherical center of the spherical pad is superposed with the centroid of the upper self-aligning roller bearing; the ball seat is slidable on the spherical pad around a centroid of the upper self-aligning roller bearing.
Preferably, in the ring mill core roller assembly provided by the invention, an upper dustproof cover is arranged at one end of the upper end bearing set, which is far away from the center of the core roller, and is positioned at the outer side of the gland; the gland is arranged at one end of the upper end bearing group close to the center of the core roller; a dustproof ring is arranged on the outer side of the gland; and a dustproof seal is arranged between the inner side of the gland and the roller sleeve.
Preferably, in the ring rolling mill core roller assembly provided by the invention, split cushion blocks are arranged on the outer sides of the dust covers, and the split cushion blocks are abutted against the stopping ends.
Preferably, in the ring mill core roll assembly provided by the invention, a dustproof ring is arranged between a gland arranged at one end of the upper end bearing group far away from the center of the core roll and the core roll.
Preferably, in the ring mill core roll assembly provided by the invention, a spacer ring and a pressing block are arranged between one end of the upper end bearing group far away from the center of the core roll and the pressing cover.
Preferably, in the ring mill core roll assembly provided by the invention, a backing ring is arranged between the upper self-aligning roller bearing and the first upper self-aligning thrust roller bearing.
Preferably, in the ring mill core roll assembly provided by the invention, sealing structures are arranged at two ends of the lower end bearing group.
Preferably, in the ring mill core roll assembly provided by the invention, a bearing seat is arranged between the lower core roll seat and the gland.
(III) advantageous effects
Through the structural design, in the ring rolling mill core roller assembly provided by the invention, when the upper seat of the core roller moves horizontally relative to the lower seat of the core roller, the core roller deflects the angle, the upper part of the core roller rotates along the center of the upper self-aligning roller bearing along with the upper roller sleeve, meanwhile, the backing ring and the first upper thrust self-aligning roller bearing (the center of the upper self-aligning roller bearing is concentric with the first upper thrust self-aligning roller bearing) rotate, and the ball seat, the second upper thrust self-aligning roller bearing, the spacer ring and the locking nut rotate along the rotation center of the spherical pad (the rotation center of the spherical pad is concentric with the center of the upper self-aligning roller bearing); and realizing the angular deflection of the upper part of the core roller. The lower part of the core roller rotates along the center of the lower centering roller bearing along with the lower roller sleeve, and meanwhile, the spacer ring, the lower thrust centering roller bearing (the center of the lower centering roller bearing is concentric with the lower thrust centering roller bearing), the spacer sleeve, the backing ring and the locking nut rotate along the center of the lower centering roller bearing, so that the lower angle deflection of the core roller is realized. The angular deflection of the core roller can effectively prevent the phenomenon that a workpiece climbs the roller in the ring rolling process of the ring rolling mill, and meanwhile, the special-shaped ring piece with the inner wall having the angle can be rolled without replacing the core roller.
Drawings
Fig. 1 is a schematic view of the structure of a ring mill core roll assembly in an embodiment of the present invention.
In fig. 1, the correspondence between the component names and the reference numbers is:
the core roller comprises a core roller 1, a step stopping end 2, a roller sleeve 3, an upper self-aligning roller bearing 4, a first upper self-aligning roller bearing 5, a second upper self-aligning roller bearing 6, a core roller upper seat 7, a lower self-aligning roller bearing 8, a lower self-aligning roller bearing 9, a core roller lower seat 10, a spherical pad 11, a ball seat 12, an upper dustproof cover 13, a dustproof ring 14, a dustproof seal 15, a split cushion block 16, a dustproof ring 17, a spacer ring 18, a pressing block 19 and a cushion ring 20.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a ring rolling mill core roll assembly according to an embodiment of the present invention.
The invention provides a core roller assembly of a ring rolling mill, which comprises a core roller 1, wherein the core roller 1 is of a metal integrated structure.
As shown in fig. 1, for convenience of structural description, a lower end of the core roll 1 in fig. 1 is referred to as a lower end, and an upper end of the core roll 1 is referred to as an upper end.
In the direction of the lower end of the core roller 1 pointing to the upper end of the core roller, the core roller 1 comprises a lower section, a middle section and an upper section, wherein the lower section and the upper section are used for installing a bearing, so that the installation on a frame of a ring rolling mill is realized, and the middle section adopts a straight round roller structure and can be in contact with a workpiece to be processed, so that the hole expansion is realized.
The specific structure of the lower section of the core roll 1 is as follows: in the direction from the end of the core roller 1 to the middle section, the lower section adopts a step structure design, the diameter size of each stage (step) is increased progressively, and the transition section of the lower section and the middle section is in a circular truncated cone structure.
The specific structure of the upper section of the core roll 1 is as follows: in the direction from the end of the core roller 1 to the middle section thereof, the upper section adopts a step type structural design, the diameter size of each stage (step) is increased progressively, and the transition section of the upper section and the middle section is in a circular truncated cone structure. In addition, a stop end 2 is provided at an end of an upper section of the core roll 1, and the diameter of the stop end 2 is larger than that of the end of the upper section for stopping a bearing set mounted to the upper section and other components.
Specifically, the stopping end 2 can be fixed on the core roller 1 by welding, and can also be fixed on the core roller 1 by adopting a threaded connection structure.
In the invention, the core roller 1 is arranged on the ring rolling mill through a bearing (bearing seat), in order to avoid the bearing from directly contacting with the core roller 1 to aggravate the abrasion speed of the core roller 1, the roller sleeve 3 is arranged on the core roller 1, the roller sleeve 3 is a sleeve structure for protecting the core roller 1 in the invention, and is provided with an inner side surface and an outer side surface, the inner side surface is designed according to the contour shape of the core roller 1 in the coverage range of the roller sleeve 3, so that the maximum contact surface with the core roller 1 can be kept after the roller sleeve 3 is sleeved on the core roller 1, and the mounting stability of the roller sleeve 3 is improved. The outer side of the roller sleeve 3 is designed according to the size of the sleeved part (mainly a bearing), and for each size of the part needing to be sleeved, the corresponding section of the roller sleeve 3 is designed into a right cylinder structure with a corresponding size.
Specifically, two roll shells 3 are provided, respectively provided on both ends (upper and lower sections) of the core roll 1.
The upper end bearing group is arranged corresponding to the upper section of the core roller 1, specifically, the upper end bearing group sequentially comprises an upper aligning roller bearing 4, a first upper thrust aligning roller bearing 5 and a second upper thrust aligning roller bearing 6 in the direction that the midpoint of the core roller 1 points to the upper end of the core roller 1, and the upper end bearing group is sleeved on a roller sleeve 3 at the upper end of the core roller 1.
In the present invention, the upper end bearing set is disposed on the core roll upper seat 7, and glands are disposed at both ends of the core roll upper seat 7 for assembling the upper end bearing set in the core roll upper seat 7.
In an embodiment of the present invention, a dust ring 14 (upper dust cap 13), a gland, an upper self-aligning roller bearing 4, a backing ring 20, a first upper self-aligning roller bearing 5, a spherical pad 11, a ball seat 12, a second upper self-aligning roller bearing 6, a spacer 18, a pressing block 19, a gland (upper seat gland), a dust cap, and a split pad 16 are sequentially disposed on a roller shell 3 (upper section) in a direction in which a midpoint of the core roller 1 is directed toward an upper end of the core roller 1, wherein a dust seal 15 is disposed between the gland (lower gland of two glands mounted on the upper section) and the roller shell 3, a dust ring 17 is disposed between the gland (upper gland, upper seat gland) and the dust cap of two glands mounted on the upper section), and after the above components are assembled, an upper end bearing set is assembled on the core roller upper seat 7. Wherein, the upper seat gland is fixedly connected with the core roller upper seat 7 through a bolt. The gland (of the two glands installed on the upper section, the gland located below) is abutted against the transition section (in a circular truncated cone structure) of the upper section and the middle section, so that the fixed installation of the roller sleeve 3 and the upper end bearing group on the core roller 1 can be realized.
Specifically, a spherical pad 11 and a ball seat 12 in sliding fit with the spherical pad 11 are arranged between the first upper self-aligning thrust roller bearing 5 and the second upper self-aligning thrust roller bearing 6; the ball seat 12 is provided with a sliding surface of the ball seat 12 with a concave spherical structure, the spherical pad 11 is provided with a sliding surface of the spherical pad 11 with a convex spherical structure, and the sliding surface of the spherical pad 11 is in sliding fit with the sliding surface of the ball seat 12; the spherical center of the sliding surface of the ball seat 12 is superposed with the centroid of the upper self-aligning roller bearing 4, and the spherical center of the spherical pad 11 is superposed with the centroid of the upper self-aligning roller bearing 4; the ball seat 12 can slide on the spherical pad 11 around the centroid of the upper self-aligning roller bearing 4.
In a specific embodiment of the present invention, in a direction in which a midpoint of the core roll 1 points to a lower end of the core roll 1, a pressing ring, a dust-proof gland, a lower seat gland, a lower centering roller bearing 8, a spacer ring 18, a lower thrust centering roller bearing 9, a backing ring 20, a lock nut, and a lower seat gland are sequentially disposed on the roll shell 3 (upper section), the pressing ring abuts against a transition section (a transition section between a lower section and a middle section, which is a truncated cone-shaped structure) on the core roll 1 to achieve fixed installation of the pressing ring on the core roll 1, and the lock nut can press components (the pressing ring, the dust-proof gland, the lower seat gland, the lower centering roller bearing 8, the spacer ring 18, and the lower thrust centering roller bearing 9) thereon through the backing ring 20, thereby achieving fixed installation of the lower end bearing set on the core roll 1. A sealing sleeve is arranged between the lower seat gland and the core roller 1.
The invention also provides a lower core roller seat 10, wherein the lower end bearing group is arranged on the lower core roller seat 10, and two ends of the lower core roller seat 10 are provided with glands for assembling the lower end bearing group in the lower core roller seat 10.
Through the structural design, in the core roller assembly of the ring rolling mill provided by the invention, when the upper core roller seat 7 moves horizontally relative to the lower core roller seat 10, the core roller 1 deflects the angle, the upper part of the core roller 1 rotates along the center of the upper self-aligning roller bearing 4 along with the upper roller sleeve 3, meanwhile, the backing ring 20 and the first upper thrust self-aligning roller bearing 5 rotate, and the ball seat 12, the second upper thrust self-aligning roller bearing 6, the spacer ring 18 and the locking nut (pressing block 19) rotate along the rotation center of the spherical pad 11 (the rotation center of the spherical pad 11 is concentric with the center of the upper self-aligning roller bearing 4); the upper part of the core roller 1 is deflected angularly. The lower part of the core roller 1 rotates along the center of the lower centering roller bearing 8 along with the lower roller sleeve 3, and meanwhile, the spacer ring 18, the lower thrust centering roller bearing 9 (the center of the lower centering roller bearing 8 is concentric with the lower thrust centering roller bearing 9), the spacer ring, the backing ring 20 and the locking nut rotate along the center of the lower centering roller bearing 8, so that the lower angle deflection of the core roller 1 is realized. The angular deflection of the core roller 1 can effectively prevent the phenomenon that a workpiece climbs the roller in the ring rolling process of the ring rolling mill, and meanwhile, the special-shaped ring piece with the inner wall having an angle can be rolled without replacing the core roller 1.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (9)
1. A ring mill core roller assembly, comprising:
the core roller comprises a core roller (1), wherein one end of the core roller is provided with a stop end head (2);
two roll sleeves (3) are arranged and are respectively sleeved at two ends of the core roll;
the upper end bearing group sequentially comprises an upper aligning roller bearing (4), a first upper thrust aligning roller bearing (5) and a second upper thrust aligning roller bearing (6) in the direction that the midpoint of the core roller points to the upper end of the core roller, and the upper end bearing group is sleeved on the roller sleeve at the upper end of the core roller;
the upper end bearing group is arranged on the upper core roller seat, and two ends of the upper core roller seat are provided with pressing covers for assembling the upper end bearing group in the upper core roller seat;
the lower end bearing group sequentially comprises a lower aligning roller bearing (8) and a lower thrust aligning roller bearing (9) in the direction that the midpoint of the core roller points to the lower end of the core roller;
the lower core roller seat (10) is provided with the lower end bearing group, and the two ends of the lower core roller seat are provided with the pressing covers for assembling the lower end bearing group in the lower core roller seat.
2. A ring mill core roll assembly according to claim 1,
a spherical pad (11) and a ball seat (12) in sliding fit with the spherical pad are arranged between the first upper self-aligning thrust roller bearing and the second upper self-aligning thrust roller bearing;
the ball seat is provided with a ball seat sliding surface with a concave spherical structure, the spherical pad is provided with a spherical pad sliding surface with a convex spherical structure, and the spherical pad sliding surface is in sliding fit with the ball seat sliding surface;
the spherical center of the spherical seat sliding surface is superposed with the centroid of the upper self-aligning roller bearing, and the spherical center of the spherical pad is superposed with the centroid of the upper self-aligning roller bearing;
the ball seat is slidable on the spherical pad around a centroid of the upper self-aligning roller bearing.
3. A ring mill core roll assembly according to claim 1,
an upper dustproof cover (13) is arranged at one end of the upper end bearing group, which is far away from the center of the core roller, and is positioned at the outer side of the gland;
the gland is arranged at one end of the upper end bearing group close to the center of the core roller;
a dustproof ring (14) is arranged on the outer side of the gland;
and a dustproof seal (15) is arranged between the inner side of the gland and the roller sleeve.
4. A ring mill core roll assembly according to claim 3,
and a split cushion block (16) is arranged on the outer side of the dustproof cover and is abutted against the stop end.
5. A ring mill core roll assembly according to claim 1,
and a dustproof ring (17) is arranged between the gland arranged at one end of the upper end bearing group far away from the center of the core roller and the core roller.
6. A ring mill core roll assembly according to claim 1,
and a space ring (18) and a pressing block (19) are arranged between one end of the upper end bearing group far away from the center of the core roller and the pressing cover.
7. A ring mill core roll assembly according to claim 1,
a backing ring (20) is arranged between the upper self-aligning roller bearing and the first upper thrust self-aligning roller bearing.
8. A ring mill core roll assembly according to claim 1,
and sealing structures are arranged at two ends of the lower end bearing group.
9. A ring mill core roll assembly according to claim 1,
and a bearing seat is arranged between the lower core roller seat and the gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429135.6A CN114378229A (en) | 2021-11-29 | 2021-11-29 | Ring rolls core roller assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111429135.6A CN114378229A (en) | 2021-11-29 | 2021-11-29 | Ring rolls core roller assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114378229A true CN114378229A (en) | 2022-04-22 |
Family
ID=81195864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111429135.6A Withdrawn CN114378229A (en) | 2021-11-29 | 2021-11-29 | Ring rolls core roller assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114378229A (en) |
-
2021
- 2021-11-29 CN CN202111429135.6A patent/CN114378229A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220422 |
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| WW01 | Invention patent application withdrawn after publication |