A roll assembly
Patent Information
- Application Number
- CN202522585620.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-05
AI Technical Summary
与普通矩形环件轧制相比，内外异形的环锻件在轧制过程中，芯辊除了受到径向力，还会受到异形接触面的垂直方向的分力，这就会导致芯辊的窜动，从而影响轧制过程的稳定性与轧制出的产品的质量
[0015]本实用新型提供了一种轧辊组件，通过设置芯辊，在芯辊的一端设置第一轧制部，并设置与芯辊平行的主轧辊，在主轧辊上设置第二轧制部，这样在需要对待轧制工件进行环形轧制时，将待轧制工件设置于主轧辊的第二轧制部和芯辊的第一轧制部之间，通过驱动组件驱动芯轴转动，并在主轧辊的第二轧制部和芯辊的第一轧制部的配合作用下能够实现对待轧制工件的环形轧制。另外，通过在芯辊和主轧辊之间设置限位件，将限位件在第二方向上的两侧分别与芯辊的外周壁和主轧辊的外周壁滑动配合连接，同时将限位件设置为能够限制主轧辊和芯辊在第一方向上的窜动。这样使得，在对待轧制工件进行环形轧制时，芯辊的第一轧制部和主轧辊的第二轧制部对待轧制工件施加径向压力，会促使金属有产生轴向的位移趋势，而金属的轴向流动会反作用于主轧辊辊的第二轧制部，从而使主辊受到垂直方向的分力（即，如图1所示，向上的分力）导致主轧辊具有沿第一方向窜动（即，如图1所示，向上窜动）的趋势，而由于在芯辊和主轧辊之间设置有限位件，当主轧辊具有沿第一方向窜动的趋势时，限位件会限制主轧辊移动，进而避免主轧辊在在第一方向上朝远离待轧制工件方向的窜动，提高了对异形环轧件轧制过程的稳定性，进而提高了轧制出的产品的质量。
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Figure CN224913223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of annular rolling technology, and in particular to a roll assembly. Background Technology
[0002] Ring rolling (also known as hole expansion or ring rolling) is a continuous localized plastic forming process that reduces the wall thickness and increases the diameter of a workpiece, shaping its cross-sectional profile, using ring rolling equipment such as ring rolling mills. Compared to ordinary rectangular ring rolling, in the rolling process of irregularly shaped ring forgings, the mandrel is subjected to not only radial force but also a vertical component force from the irregular contact surface. This can cause the mandrel to shift, thus affecting the stability of the rolling process and the quality of the rolled product.
[0003] Therefore, there is an urgent need for a roll assembly to solve the above-mentioned technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a roll assembly for improving the stability of the rolling process and product quality of irregularly shaped ring rolls.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] This utility model provides a roll assembly for rolling irregularly shaped ring-shaped parts. The roll assembly includes a mandrel, a main roll, and a limiting member. The mandrel extends along a first direction and has a first rolling section at one end. The main roll extends along the first direction and has a second rolling section. In a second direction, the second rolling section and the first rolling section are directly opposite each other. The workpiece to be rolled is disposed between the second rolling section and the first rolling section. The second direction forms an angle with the first direction. The limiting member is disposed between the mandrel and the main roll. The limiting member is slidably connected to the outer peripheral wall of the mandrel and the outer peripheral wall of the main roll on both sides in the second direction. The limiting member can restrict the main roll from moving away from the workpiece in the first direction.
[0007] In some embodiments, one of the outer peripheral walls of the core roll and the outer peripheral wall of the main roll is provided with a limiting protrusion, and the other is provided with a limiting groove; in the second direction, one side of the limiting member is disposed in the limiting groove, and the other side abuts against the limiting protrusion; in the first direction, the limiting member is located between the limiting protrusion and the workpiece to be rolled.
[0008] In some embodiments, the outer peripheral wall of the core roller and the outer peripheral wall of the main roll are both provided with limiting grooves; in the second direction, the limiting members are respectively provided with the limiting grooves on the core roller and the limiting grooves on the main roll on both sides.
[0009] In some embodiments, in the second direction, the sidewall of the limiting member is spaced apart from the bottom of the limiting groove.
[0010] In some embodiments, the limiting member has a disc-shaped structure; the limiting member is provided with an annular connecting portion; the annular connecting portion is slidably connected to the outer peripheral wall of the core roller and the outer peripheral wall of the main roller.
[0011] In some embodiments, a buffer is provided on the side of the limiting member opposite to the workpiece to be rolled; the buffer is adapted to the limiting member.
[0012] In some embodiments, an annular groove is provided on the side of the limiting member opposite to the workpiece to be rolled; the annular groove is provided in the annular connecting portion; a retainer is provided in the annular groove; and a ball is provided in the retainer.
[0013] In some embodiments, an annular groove is provided on the side of the limiting member opposite to the workpiece to be rolled; the annular groove is provided on the annular connecting portion; and a lubricating filler is provided in the annular groove.
[0014] The beneficial effects of this utility model are:
[0015] This invention provides a roll assembly. By setting a mandrel, a first rolling section is provided at one end of the mandrel, and a main roll parallel to the mandrel is provided. A second rolling section is provided on the main roll. When it is necessary to perform annular rolling on the workpiece, the workpiece is placed between the second rolling section of the main roll and the first rolling section of the mandrel. A drive assembly drives the mandrel to rotate, and the annular rolling of the workpiece can be achieved through the combined action of the second rolling section of the main roll and the first rolling section of the mandrel. Furthermore, by providing a limiting member between the mandrel and the main roll, the limiting member is slidably connected to the outer peripheral walls of the mandrel and the main roll on both sides in the second direction, respectively. The limiting member is also designed to restrict the movement of the main roll and the mandrel in the first direction. This means that during the annular rolling of the workpiece, the first rolling section of the mandrel and the second rolling section of the main roll apply radial pressure to the workpiece, causing the metal to tend to move axially. The axial flow of the metal then reacts on the second rolling section of the main roll, thus subjecting the main roll to a vertical component of force (i.e., such as...). Figure 1 As shown, the upward component of the force causes the main roll to move along the first direction (i.e., as shown). Figure 1As shown, the main roll tends to move upwards. However, due to the limiting component between the core roll and the main roll, when the main roll has a tendency to move upwards in the first direction, the limiting component will restrict the movement of the main roll, thereby preventing the main roll from moving away from the workpiece in the first direction. This improves the stability of the rolling process of the irregular ring roll and thus improves the quality of the rolled product. Attached Figure Description
[0016] Figure 1 This is a structural diagram of a roll assembly and a workpiece to be rolled, provided in a specific embodiment of this utility model;
[0017] Figure 2 This is a structural diagram of a core roller provided in a specific embodiment of this utility model;
[0018] Figure 3 This is a structural diagram of a main rolling mill provided in a specific embodiment of this utility model.
[0019] In the picture:
[0020] 1. Core roll; 11. First rolling section; 12. Limiting protrusion; 2. Main roll; 21. Second rolling section; 22. Limiting groove; 3. Limiting component; 31. Annular connecting part; 10. Workpiece to be rolled;
[0021] X1, first direction; X2, second direction. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0026] Combination Figures 1 to 3 As shown, this embodiment provides a roll assembly for rolling irregularly shaped ring rolls. The roll assembly includes a core roll 1, a main roll 2, and a limiting member 3.
[0027] The aforementioned core roller 1 extends along a first direction X1. A first rolling section 11 is provided at one end of the core roller 1. The first rolling section 11 is, for example, an annular stepped rolling section formed by cutting the end of the core roller 1.
[0028] The main roll 2 extends along the first direction X1; in other words, the extension direction of the main roll 2 is the same as the extension direction of the core roll 1. A second rolling section 21 is provided on the main roll 2. This second rolling section 21 is, for example, an annular groove-shaped rolling section formed by cutting the roll body portion of the main roll 2. In the second direction X2, the second rolling section 21 of the main roll 2 and the first rolling section 11 of the core roll 1 are arranged opposite each other. Here, the second direction X2 is set at an angle to the first direction X1, for example, 90°. Or, if the first direction X1 is the axial direction of the core roll 1, then the second direction X2 is the radial direction of the core roll 1. The workpiece 10 to be rolled is disposed between the second rolling section 21 of the main roll 2 and the first rolling section 11 of the core roll 1. The workpiece 10 to be rolled is an irregularly shaped ring-rolled part. It is easy to understand that when the shape of the product to be rolled changes, the second rolling section 21 of the main roll 2 and the first rolling section 11 of the core roll 1 need to be adapted to the shape of the product. Therefore, the second rolling section 21 of the main roll 2 and the first rolling section 11 of the core roll 1 will not be described in detail here.
[0029] In addition, it is easy to understand that one end of the core roller 1 can be connected to the drive assembly for transmission. The drive assembly is used to drive the core roller 1 to rotate. At the same time, both the core roller 1 and the main roll 2 can be mounted on the roll body mounting frame. The core improvement of this embodiment is not in how to drive the core roller 1 to rotate or how to install the core roller 1 and the main roll 2, so it will not be described in detail here.
[0030] like Figure 1 As shown, the aforementioned limiting member 3 is disposed between the core roll 1 and the main roll 2. The limiting member 3 is slidably connected to the outer peripheral wall of the core roll 1 and the outer peripheral wall of the main roll 2 on both sides in the second direction X2. The limiting member 3 can restrict the main roll 2 from moving away from the workpiece 10 to be rolled in the first direction X1 (i.e., as shown). Figure 1 As shown, it moves upwards.
[0031] Therefore, the roll assembly provided in this embodiment, by setting a core roll 1, a first rolling section 11 at one end of the core roll 1, and a main roll 2 parallel to the core roll 1, with a second rolling section 21 on the main roll 2, allows for the circular rolling of the workpiece 10 when it is required to be rolled. The workpiece 10 is positioned between the second rolling section 21 of the main roll 2 and the first rolling section 11 of the core roll 1. The mandrel is driven to rotate by a drive assembly, and the circular rolling of the workpiece 10 can be achieved through the combined action of the second rolling section 21 of the main roll 2 and the first rolling section 11 of the core roll 1. Furthermore, by setting a limiting member 3 between the core roll 1 and the main roll 2, the limiting member 3 is slidably connected to the outer peripheral walls of the core roll 1 and the main roll 2 on both sides in the second direction X2, and the limiting member 3 is configured to restrict the movement of the main roll 2 and the core roll 1 in the first direction X1. This means that during the annular rolling of the workpiece 10, the first rolling section 11 of the core roll 1 and the second rolling section 21 of the main roll 2 apply radial pressure to the workpiece 10, causing the metal to tend to move axially. The axial flow of the metal then reacts on the second rolling section 21 of the main roll 2, thus subjecting the main roll to a vertical component force (i.e., such as...). Figure 1 As shown, the upward component of the force causes the main roll 2 to move along the first direction X1 (i.e., as shown). Figure 1 As shown, the main roll 2 tends to move upwards. However, due to the limiting member 3 set between the core roll 1 and the main roll 2, when the main roll 2 has a tendency to move upwards along the first direction X1, the limiting member 3 will restrict the movement of the main roll 2, thereby preventing the main roll 2 from moving away from the workpiece 10 in the first direction X1, improving the stability of the rolling process of the irregular ring roll, and thus improving the quality of the rolled product.
[0032] Combination Figures 1 to 3As shown, in some embodiments, one of the outer peripheral walls of the core roll 1 and the main roll 2 is provided with a limiting protrusion 12, and the other with a limiting groove 22. It is readily understood that the limiting protrusion 12 is an annular protrusion structure extending circumferentially along the outer peripheral wall of the core roll 1 or the main roll 2. Similarly, the limiting groove 22 is an annular groove structure, also extending circumferentially along the outer peripheral wall of the core roll 1 or the main roll 2. In the second direction X2, one side of the limiting member 3 is disposed in the limiting groove 22, and the other side abuts against the limiting protrusion 12. Meanwhile, in the first direction X1, the limiting member 3 is located between the limiting protrusion 12 and the workpiece 10 to be rolled. In this way, during the ring rolling process, after the workpiece 10 to be rolled applies a vertical component force to the main roll 2, the main roll 2 tends to move (move upward) in the direction away from the workpiece 10 to be rolled along the first direction X1. This, in turn, causes the limiting member 3 to tend to move (move upward) in the direction away from the workpiece 10 to be rolled along the first direction X1. The other side of the limiting member 3 abuts against the limiting protrusion 12 in the first direction X1. In this way, the limiting member 3 can be used to restrict the main roll 2 from moving away from the workpiece 10 to be rolled in the first direction X1.
[0033] In some embodiments, both the outer peripheral wall of the core roller 1 and the outer peripheral wall of the main roller 2 are provided with limiting grooves 22. In the second direction X2, limiting grooves 22 on the core roller 1 and the main roller 2 are respectively provided on both sides of the limiting member 3. With this arrangement, the limiting member 3 can also be used to restrict the movement of the main roller 2 away from the workpiece 10 in the first direction X1, while improving the limiting effect.
[0034] In some embodiments, in the second direction X2, the sidewall of the limiting member 3 is spaced apart from the bottom of the limiting groove 22. By such a configuration, contact between the sidewall of the limiting member 3 and the bottom of the limiting groove 22 can be avoided, thereby preventing severe friction between the bottom of the limiting groove 22 and the sidewall of the limiting member 3 when the core roll 1 and the main roll 2 rotate.
[0035] In some embodiments, the aforementioned limiting member 3 has a disc-shaped structure. For example... Figure 1 As shown, the limiting member 3 is provided with an annular connecting portion 31. This annular connecting portion 31 is slidably connected to the outer peripheral wall of the core roller 1 and the outer peripheral wall of the main roller 2. That is, when one of the outer peripheral walls of the core roller 1 and the main roller 2 is provided with a limiting protrusion 12 and the other with a limiting groove 22, one side of the annular connecting portion 31 (with...) Figure 1 Taking a perspective example, the left side of the annular connecting part 31 is located in the limiting groove 22, and the other side (with) Figure 1Taking the perspective as an example, the right side of the annular connecting part 31 abuts against the limiting protrusion 12; when the outer peripheral wall of the core roller 1 and the outer peripheral wall of the main roller 2 are both provided with limiting grooves 22, the two sides of the annular connecting part 31 are respectively provided with limiting grooves 22 on the outer peripheral wall of the core roller 1 and limiting grooves 22 on the outer peripheral wall of the main roller 2.
[0036] In some embodiments, a buffer is provided on the side of the limiting member 3 facing away from the workpiece 10 to be rolled. This buffer is adapted to the limiting member 3. "Adapted" here means that the buffer is also circular, and its size (diameter) is the same as that of the limiting member 3. This buffer is, for example, a rubber layer, a rubber pad, or a plastic sheet. This arrangement alleviates the rigid contact between the upper side of the limiting member 3 and the main roll 2 and the core roll 1. It also prevents the limiting member 3 from being directly rubbed by the main roll 2 and the core roll 1.
[0037] In some embodiments, an annular groove is provided on the side of the limiting member 3 facing away from the workpiece 10 to be rolled. This annular groove is located on the annular connecting portion 31 of the limiting member 3. A retainer is provided within the annular groove, and balls are disposed within the retainer. The structure of the retainer can be designed with reference to related technologies (e.g., retainers in bearings), and will not be described in detail here. Through this design, the sliding friction between the limiting member 3 and the main roll 2 and the core roll 1 can be transformed into rolling friction, significantly reducing the frictional force between the limiting member 3 and the main roll 2 and the core roll 1, and indirectly extending the service life of the limiting member 3, the main roll 2, and the core roll 1.
[0038] In some embodiments, an annular groove is provided on the side of the limiting member 3 facing away from the workpiece 10 to be rolled. This annular groove is located in the annular connecting portion 31. Lubricating filler is provided within the annular groove. This lubricating filler is, for example, oil-impregnated graphite felt or fiber lubricating block. This arrangement allows the lubricating filler to store lubricating oil, continuously providing lubrication to the contact surfaces between the limiting member 3 and the main roll 2 and the core roll 1, converting dry sliding friction into boundary lubrication friction, and indirectly extending the service life of the limiting member 3, the main roll 2, and the core roll 1.
[0039] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A roll assembly for rolling irregularly shaped ring-shaped parts; characterized in that, include: A core roller (1) extends along a first direction (X1); a first rolling section (11) is provided at one end of the core roller (1). A main roll (2) extends along the first direction (X1); a second rolling section (21) is provided on the main roll (2); in the second direction (X2), the second rolling section (21) is directly opposite to the first rolling section (11); the workpiece (10) to be rolled is disposed between the second rolling section (21) and the first rolling section (11); the second direction (X2) is at an angle to the first direction (X1); A limiting member (3) is disposed between the core roll (1) and the main roll (2); the limiting member (3) is slidably connected to the outer peripheral wall of the core roll (1) and the outer peripheral wall of the main roll (2) on both sides in the second direction (X2); the limiting member (3) can restrict the main roll (2) from moving away from the workpiece (10) in the first direction (X1).
2. The roll assembly according to claim 1, characterized in that, The outer peripheral wall of the core roll (1) and the outer peripheral wall of the main roll (2) are provided with a limiting protrusion (12) and a limiting groove (22), respectively. In the second direction (X2), one side of the limiting member (3) is disposed in the limiting groove (22), and the other side abuts against the limiting protrusion (12). In the first direction (X1), the limiting member (3) is located between the limiting protrusion (12) and the workpiece (10) to be rolled.
3. The roll assembly according to claim 1, characterized in that, The outer peripheral wall of the core roller (1) and the outer peripheral wall of the main roller (2) are provided with limiting grooves (22); in the second direction (X2), the limiting member (3) is provided on both sides of the limiting grooves (22) on the core roller (1) and the main roller (2).
4. The roll assembly according to any one of claims 2 or 3, characterized in that, In the second direction (X2), the sidewall of the limiting member (3) is spaced apart from the bottom of the limiting groove (22).
5. The roll assembly according to any one of claims 1 to 3, characterized in that, The limiting member (3) has a disc-shaped structure; the limiting member (3) is provided with an annular connecting part (31); the annular connecting part (31) is slidably connected to the outer peripheral wall of the core roller (1) and the outer peripheral wall of the main roller (2).
6. The roll assembly according to claim 5, characterized in that, A buffer is provided on the side of the limiting member (3) away from the workpiece (10) to be rolled; the buffer is adapted to the limiting member (3).
7. The roll assembly according to claim 5, characterized in that, An annular groove is provided on the side of the limiting member (3) away from the workpiece (10) to be rolled; the annular groove is provided on the annular connecting part (31); a retainer is provided in the annular groove; and a ball is provided in the retainer.
8. The roll assembly according to claim 5, characterized in that, An annular groove is provided on the side of the limiting member (3) away from the workpiece (10) to be rolled; the annular groove is provided on the annular connecting part (31); and a lubricating filler is provided in the annular groove.