An adaptive centering mechanism for a radial forging machine train

Abstract

The application discloses a kind of adaptive centering mechanism for radial forging machine unit, including symmetrically arranged sliding bracket, drive cylinder, base and slide. Wherein: sliding bracket is fixed to main machine by mounting plate, and is lifted along slide under the drive of cylinder;Base two ends are fixedly connected with sliding bracket, and two support shafts are arranged in parallel on it;Slide is slidably installed on support shaft, and V-shaped roller is arranged on its upper surface to support blank, and cylindrical roller bearing is installed on its back;Baffle is fixed to main machine and is provided with guide inclined plate.Working process, slide is self-adapting sliding alignment under eccentric blank thrust force, and cylindrical roller bearing is forced to reset along baffle inclined plate when falling.The application solves the problem of traditional mechanism centering, and significantly improves the adaptability and reset efficiency of large-tonnage radial forging machine to eccentric blank.

Description

Technical Field

[0001] This invention relates to the field of forging equipment technology, specifically to an adaptive centering mechanism for radial forging mill units. Background Technology

[0002] Forging mills are becoming increasingly popular in the forging industry due to their high production efficiency, high degree of automation, and near-net-shape forming capabilities. During the forging process, a centering mechanism is essential, playing a crucial role in stabilizing and supporting the billet to prevent bending deformation. Currently, there are two types of centering mechanisms on the market: one is a "scissor" type, which uses a single hydraulic cylinder to pull a gear pair to achieve centering; the other is a "V-type" centering mechanism, symmetrical on both sides with a cantilever beam structure, which uses two hydraulic cylinders to pull rollers to achieve centering.

[0003] However, both of the above centering mechanisms are suitable for small-tonnage machines, and their centers are not adjustable, limiting them to centering concentric billets such as round and square bars. With the increasing size of radial forging mills and the diversification of customer needs, these two centering mechanisms are clearly no longer sufficient.

[0004] To address the above issues, this invention proposes an adaptive centering mechanism for radial forging mills, based on the "V-shaped" centering mechanism. This mechanism offers the following advantages: 1) It can meet the centering function of large and medium-tonnage radial forging mills; 2) The mechanism's center is adjustable, satisfying both the centering requirements for forging concentric billets and eccentric billets, such as rectangular billets; 3) It features adaptive centering, automatically aligning itself during forging and during the forging process and upon descent, without requiring additional power. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive centering mechanism for radial forging mill units, which is adaptable to large tonnage, has an adjustable center, and has a self-resetting function, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an adaptive centering mechanism for a radial forging mill unit, comprising a sliding bracket, a drive cylinder, a base, and a slide block arranged symmetrically on the left and right sides; the sliding bracket is fixed to the front of the radial forging mill main unit by a mounting plate, the mounting plate is connected to a cover plate to form a slide rail, and the sliding bracket can move up and down along the slide rail; the drive cylinder is fixed to the mounting plate by a cylinder support plate, and its output end is connected to the sliding bracket via a spherical bearing; the two ends of the base are respectively connected to the left and right sliding brackets, and two support shafts are arranged in parallel on the base; the slide block is slidably mounted on the support shafts, and a cylindrical roller bearing is provided on the back of the slide block, on which two roller shafts arranged in a V-shape are mounted; rollers are mounted on the roller shafts to support the billet; a baffle is fixed to the front of the radial forging mill main unit, which is provided with a guide inclined plate, and when the slide block falls, the cylindrical roller bearing contacts the guide inclined plate, forcing the slide block to return to the center position.

[0007] Preferably, a displacement sensor is provided at the top of the piston rod of the drive cylinder.

[0008] Preferably, the sliding bracket is embedded with a T-shaped sliding bolt, which contacts the mounting plate and the cover plate, and has a grease lubrication port on its surface.

[0009] Preferably, the mounting plate and sliding bracket are provided with an anti-oxidation protective cover.

[0010] Preferably, both the bottom of the slide block and the sliding bolt are provided with grease lubrication ports.

[0011] The working process of this invention is as follows: When the drive cylinder pushes the sliding bracket to rise, the base rises synchronously, causing the roller to contact the billet. During the forging process, the lateral force generated by the eccentric billet pushes the slide block to slide freely along the support shaft, allowing the roller to adaptively adjust to the actual center position of the billet. After forging, the cylinder retracts, causing the mechanism to fall. At this time, the cylindrical roller bearing on the back of the slide block contacts the guide plate of the baffle. Under the action of the inclined plane, the slide block is forced to slide horizontally until it returns to the initial center position, completing the zero-power self-correction cycle.

[0012] The adaptive self-aligning function of this invention is manifested in finding the forging center without additional power when forging eccentric billets. The initial position of this mechanism is by default on the same plane as the forging center. When the chuck clamps the eccentric billet and feeds it, this mechanism rises and contacts the eccentric billet. During the forging process, the sliding block is continuously moved by the transmission of forging force until it is aligned with the forging center. After forging is completed, the mechanism descends. During the descent, the cylindrical roller bearing contacts the baffle, thereby moving the sliding block back to the initial position.

[0013] The beneficial effects of this invention are as follows: (1) The present invention uses a roller to replace the traditional roller, increasing the contact area by 200%; the base and the left and right sliding brackets are connected by bolts to form a closed frame structure, which increases the rigidity of the mechanism by 40% and can meet the centering requirements of a thousand-ton diameter forging machine.

[0014] (2) The slide of the present invention can slide freely along the support shaft. When forging eccentric billets (such as rectangular billets), the lateral force of the billet pushes the slide to automatically move, so that the center of the roller matches the actual center of the billet in real time, without the need for sensors or additional power intervention.

[0015] (3) In this invention, the guide plate of the baffle cooperates with the cylindrical roller bearing on the back of the slide. During the falling process of the mechanism, the inclined surface forces the slide to return to the initial center position horizontally, eliminating manual intervention and consuming no energy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the shieldless structure of the present invention; Figure 3 This is a cross-sectional view of the present invention; Wherein: 1-sliding bracket, 2-cylinder, 3-mounting plate, 4-cover plate, 5-cylinder support plate, 6-sliding bolt, 7-baffle, 8-cylindrical roller bearing, 9-roller, 10-roller shaft, 11-slide seat, 12-base, 13-support shaft. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] like Figure 1-3 The adaptive centering mechanism for a radial forging mill unit shown includes a sliding bracket 1 symmetrically arranged on the left and right, a drive cylinder 2 with a displacement sensor at the top of the piston rod, a base 12, and a slide block 11. The sliding bracket 1 is fixed to the front of the radial forging mill main unit by a mounting plate 3. The mounting plate 3 is connected to a cover plate 4 to form a slide rail, and the sliding bracket 1 can move up and down along the slide rail. The drive cylinder 2 is fixed to the mounting plate 3 by a cylinder support plate 5, and its output end is connected to the sliding bracket 1 via a spherical bearing. The mounting plate 3 and the sliding bracket 1 are provided with an anti-oxidation scale protective cover.

[0019] The base 12 is connected to left and right sliding brackets 1 at both ends, and two support shafts 13 are arranged in parallel on the base 12. The slide 11 is slidably installed on the support shafts 13. The back of the slide 11 is provided with a cylindrical roller bearing 8, and two roller shafts 10 arranged in a V-shape are installed on it. Rollers 9 are installed on the roller shafts 10 to support the billet. A baffle 7 is fixed on the front of the radial forging machine, which is provided with a guide plate. When the slide 11 falls, the cylindrical roller bearing 8 contacts the guide plate and forces the slide 11 to return to the center position.

[0020] The sliding bracket 1 has a T-shaped sliding bolt 6 embedded in it. The sliding bolt 6 is in contact with the mounting plate 3 and the cover plate 4, and a grease lubrication port is opened on its surface.

[0021] The bottom of the slide block 11 and the sliding bolt 6 are both provided with grease lubrication ports.

[0022] The working process of this invention is as follows: When the drive cylinder 2 pushes the sliding bracket 1 to rise, the base 12 rises synchronously, causing the roller 9 to contact the billet. During the forging process, the lateral force generated by the eccentric billet pushes the slide block 11 to slide freely along the support shaft 13, so that the roller 9 adaptively adjusts to the actual center position of the billet. After the forging is completed, the cylinder 2 retracts and drives the mechanism to fall. At this time, the cylindrical roller bearing 8 on the back of the slide block 11 contacts the guide inclined plate of the baffle 7. Under the action of the inclined plate, the slide block 11 is forced to slide horizontally until it is reset to the initial center position, completing the zero-power self-correction cycle.

[0023] The adaptive self-aligning function of this invention is reflected in the fact that it can find the forging center without additional power when forging eccentric billets. The initial position of this mechanism is on the same plane as the forging center by default. When the chuck clamps the eccentric billet and feeds it, this mechanism rises and contacts the eccentric billet. During the forging process, the sliding block 11 is continuously moved until it is aligned with the forging center through the transmission of forging force. After forging is completed, the mechanism descends. During the descent, the cylindrical roller bearing 8 contacts the baffle 7, thereby moving the sliding block 11 back to the initial position.

[0024] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, based on the technical teachings provided by the present invention and as common knowledge in the mechanical field, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of the present invention.

Claims

1. An adaptive centering mechanism for a radial forging mill unit, characterized in that... The components include a sliding bracket (1) arranged symmetrically on the left and right sides, a drive cylinder (2), a base (12), and a slide (11). The sliding bracket (1) is fixed to the front of the radial forging machine main unit by the mounting plate (3). The mounting plate (3) is connected to the cover plate (4) to form a slide rail. The sliding bracket (1) can move up and down along the slide rail. The drive cylinder (2) is fixed to the mounting plate (3) by the cylinder support plate (5), and its output end is connected to the sliding bracket (1) via a joint bearing. The base (12) is connected to left and right sliding brackets (1) at both ends respectively, and two support shafts (13) are arranged in parallel on the base (12). The slide (11) is slidably mounted on the support shaft (13). The back of the slide (11) is provided with a cylindrical roller bearing (8), and two roller shafts (10) arranged in a V-shape are mounted on it. A roller (9) is mounted on the roller shaft (10) to support the billet; The front of the radial forging machine is fixed with a baffle (7), which is equipped with a guide plate. When the slide (11) falls, the cylindrical roller bearing (8) contacts the guide plate, forcing the slide (11) to return to the center position.

2. The adaptive centering mechanism for a radial forging mill unit according to claim 1, characterized in that: The piston rod of the drive cylinder (2) is equipped with a displacement sensor.

3. An adaptive centering mechanism for a radial forging mill unit according to claim 1 or 2, characterized in that: The sliding bracket (1) is embedded with a T-shaped sliding bolt (6), which is in contact with the mounting plate (3) and the cover plate (4), and has a grease lubrication port on its surface.

4. The adaptive centering mechanism for a radial forging mill unit according to claim 3, characterized in that: The mounting plate (3) and sliding bracket (1) are provided with an anti-oxidation protective cover.

5. The adaptive centering mechanism for a radial forging mill unit according to claim 4, characterized in that: The bottom of the slide block (11) and the sliding bolt (6) are both provided with grease lubrication ports.

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