Independently-driven ring piece expansion and shrinkage integrated forming device

Abstract

The utility model discloses an independently-driven ring piece expansion and shrinkage integrated forming device. According to the independently-driven ring piece expansion and shrinkage integrated forming device, inner diameter expansion wedge-shaped strips for providing radial driving force are correspondingly installed on the inner diameter face of an expansion mold; a sliding groove is formed in the radial direction of the inner diameter bulging wedge-shaped strip, a bulging sliding block is installed in the sliding groove in a matched mode, and the inner diameter bulging wedge-shaped strip is limited by the bulging sliding block so that the inner diameter bulging wedge-shaped strip can only slide in the radial direction. An outer diameter wedge-shaped loading strip for providing radial driving force is correspondingly mounted on the outer diameter surface of the reducing die, a sliding groove is formed in the radial direction of the outer diameter wedge-shaped loading strip, a reducing sliding block is mounted in the sliding groove in a matched manner, and the outer diameter wedge-shaped loading strip is limited by the reducing sliding block, so that the outer diameter wedge-shaped loading strip can only slide in the radial direction. Due to the outer diameter wedge-shaped loading strip, the inner diameter bulging wedge-shaped strip is limited; the radial movement stability is guaranteed when the outer diameter wedge-shaped loading strip and the inner diameter bulging wedge-shaped strip correspondingly drive the reducing die and the bulging die, and the problems that in the prior art, limiting cannot be achieved in the radial driving process, and the radial movement stability cannot be guaranteed are solved.

Description

Technical Field

[0001] The utility model relates to an independently driven ring expansion and contraction integrated forming device, belonging to the technical field of ring correction forming. Background Art

[0002] After rolling, large rings may have defects such as low overall dimensional accuracy and poor roundness. If the circumferential dimension deviation is too large, the rings need to be expanded and contracted to correct the shape.

[0003] The current ring expansion and contraction technology, see Chinese patent publication number CN117086223A, can realize the expansion and contraction correction forming of the ring by radially driving the discrete blocks of the outer diameter shrinkage mold and the discrete blocks of the inner diameter bulging mold. However, the discrete blocks of the outer diameter shrinkage mold and the discrete blocks of the inner diameter bulging mold fail to obtain limit during the radial driving process, and the radial motion stability cannot be guaranteed, which affects the correction forming of the ring. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an independently driven ring expansion and contraction integrated forming device.

[0005] The utility model is achieved through the following technical solutions.

[0006] The utility model provides an independently driven ring expansion and contraction integrated forming device, comprising:

[0007] A reducing die for forming the outer diameter of a ring;

[0008] The bulging die for forming the inner diameter of the ring by external expansion;

[0009] There is a spacing space between the diameter reducing die and the bulging die for placing the ring; the diameter reducing die and the bulging die can slide closer to or away from each other in the radial direction.

[0010] An inner diameter bulging wedge strip providing radial driving force is correspondingly installed on the inner diameter surface of the bulging die; a sliding groove is provided on the radial direction of the inner diameter bulging wedge strip to cooperate with the bulging slider, and the inner diameter bulging wedge strip is limited by the bulging slider so that the inner diameter bulging wedge strip can only slide radially;

[0011] An outer diameter wedge-shaped loading bar that provides radial driving force is installed on the outer diameter surface of the reducing die. A sliding groove is provided in the radial direction of the outer diameter wedge-shaped loading bar, and a reducing slider is installed thereon. The outer diameter wedge-shaped loading bar is limited by the reducing slider so that the outer diameter wedge-shaped loading bar can only slide radially.

[0012] A conical die is installed in the inner diameter space of a plurality of inner diameter bulging wedge strips spaced apart in an annular array; and a bulging driving device capable of lifting and lowering is also included, and the bulging driving device is fixedly installed at the bottom of the conical die.

[0013] The number of the diameter reducing dies and the bulging dies are multiple and are distributed in a ring array at intervals.

[0014] A retractable diameter-reducing pull rod is installed at the bottom of the outer diameter wedge-shaped loading strip; a retractable expansion pull rod is installed at the bottom of the inner diameter expansion wedge-shaped strip.

[0015] It also includes a work table, the inner diameter surface of the work table is installed with an outer rigid limiting ring, the bottom of the outer rigid limiting ring is fixed with a support plate, the inner diameter surface of the outer rigid limiting ring is fixed with wedge seats at intervals, and the support plate is provided with a mounting through hole for the wedge seat to pass through.

[0016] The wedge-shaped seat is vertically provided with a sliding groove on which a wedge-shaped strip can be slidably installed. The outer diameter wedge-shaped loading strip and the inclined surface of the wedge strip can be relatively slidably matched and are located in the sliding groove of the wedge-shaped seat.

[0017] An independent diameter reduction drive device that provides lifting and lowering action is installed at the bottom of the wedge bar; each outer diameter wedge loading bar corresponds to an independent wedge bar, and the wedge bar corresponds to an independent diameter reduction drive device. The independent diameter reduction drive device can independently drive the wedge bar to rise, and the wedge bar causes the outer diameter wedge loading bar to slide radially to drive the diameter reduction mold to shrink radially.

[0018] The beneficial effects of the present invention are that the outer diameter wedge-shaped loading bar and the inner diameter expanding wedge-shaped bar are limited and can only slide radially, which prohibits the movement of both in the vertical direction; the stability of the radial movement of the outer diameter wedge-shaped loading bar and the inner diameter expanding wedge-shaped bar when correspondingly driving the reduction mold and the expansion mold is guaranteed, which solves the problem that the prior art fails to obtain limitation during the radial driving process and cannot ensure the stability of radial movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a structural diagram of the support plate of the utility model;

[0021] In the figure: 1-working table; 2-outer rigid limiting ring; 3-wedge seat; 4-outer diameter wedge loading strip; 5-support plate; 6-wedge strip; 7-independent driving device for reducing diameter; 8-reducing die; 9-ring; 10-bulging die; 11-reducing slider; 12-reducing pull rod; 13-bulging pull rod; 14-bulging slider; 15-tapered die; 16-bulging driving device; 17-inner diameter bulging wedge strip. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0023] like Figures 1 to 2 shown.

[0024] The present application provides an independently driven ring expansion and contraction integrated forming device, comprising:

[0025] There are multiple reducing dies 8 and expanding dies 10 spaced apart in an annular array. There is a space between the reducing dies 8 and the expanding dies 10 for placing the ring 9. The reducing dies 8 and the expanding dies 10 can slide towards or away from each other in the radial direction.

[0026] An inner diameter bulging wedge strip 17 providing radial driving force is installed on the inner diameter surface of each bulging die 10. A tapered die 15 is installed in the inner diameter space of the inner diameter bulging wedge strips 17 spaced apart in a circular array. The inner diameter bulging wedge strips 17 are provided with radial grooves to cooperate with the bulging sliders 14. The inner diameter bulging wedge strips 17 are limited by the bulging sliders 14 so that they can only slide radially.

[0027] An outer diameter wedge-shaped loading bar 4 providing radial driving force is installed on the outer diameter surface of each of the reducing dies 8. A sliding groove is provided in the radial direction of the outer diameter wedge-shaped loading bar 4 and a reducing slider 11 is installed thereon. The outer diameter wedge-shaped loading bar 4 is limited by the reducing slider 11 so that the outer diameter wedge-shaped loading bar 4 can only slide radially.

[0028] Since the outer diameter wedge loading strip 4 and the inner diameter expanding wedge strip 17 are limited, they can only slide radially and are prohibited from moving in the vertical direction; the stability of the radial movement of the outer diameter wedge loading strip 4 and the inner diameter expanding wedge strip 17 when correspondingly driving the reducing die 8 and the expanding die 10 is ensured, which solves the problem that the prior art fails to obtain limitation during radial driving and cannot ensure the stability of radial movement.

[0029] A retractable reducing rod 12 is installed at the bottom of the outer diameter wedge loading strip 4. The reducing rod 12 is extended to drive the outer diameter wedge loading strip 4 to expand outward and reset; a retractable expanding rod 13 is installed at the bottom of the inner diameter expanding wedge strip 17. The expanding rod 13 is extended to drive the inner diameter expanding wedge strip 17 to retract inward and reset.

[0030] It also includes a screw that drives the bottom of the ring 9. The screw is rotated by a driving device. The friction between the screw and the bottom of the ring 9 is used to drive the ring 9 to rotate as a whole to change position, thereby realizing correction of different positions of the ring 9. This is existing technology.

[0031] The bulging drive device 16 is also included. The bulging drive device 16 is fixedly mounted on the bottom of the conical die 15. The bulging drive device 16 moves up and down with the conical die 15. When the bulging drive device 16 is raised, the conical die 15 synchronously expands the multiple bulging dies 10 radially outward, thereby achieving correction and forming of the entire inner diameter surface of the ring 9.

[0032] It also includes a work table 1, an outer rigid limiting ring 2 is installed on the inner diameter surface of the work table 1, a support plate 5 is fixed on the bottom of the outer rigid limiting ring 2, a wedge seat 3 is fixedly installed on the inner diameter surface of the outer rigid limiting ring 2 at intervals, and a mounting through hole is provided on the support plate 5 for the wedge seat 3 to pass through.

[0033] The wedge seat 3 is provided with a vertical slot in which a wedge strip 6 is slidably mounted. The outer diameter wedge loading strip 4 slides relative to the inclined surface of the wedge strip 6 and is positioned within the slot of the wedge seat 3. An independent reduction drive device 7 is mounted at the bottom of each wedge strip 6, providing a lifting and lowering action. Each outer diameter wedge loading strip 4 corresponds to an independent wedge strip 6, and each wedge strip 6 has an independent reduction drive device 7. The independent reduction drive device 7 independently drives the wedge strip 6 to rise, causing the wedge strip 6 to radially slide the outer diameter wedge loading strip 4, thereby driving the reduction die 8 to radially retract.

[0034] A single reducing die 8 independently shrinks radially inwards to achieve correction and forming of the outer diameter surface of a certain position of the ring 9; multiple reducing dies 8 shrink radially inwards simultaneously to achieve correction and forming of the entire outer diameter surface of the ring 9. This makes the technical solution of this application have independent driving properties.

[0035] After the diameter reducing die 8 is expanded outward and the bulging die 10 is retracted and reset, the ring piece 9 after expansion and contraction is taken out.

Claims

1. An independently driven ring expansion and contraction integrated forming device, characterized in that: include: A diameter-reducing die (8) for forming the outer diameter of the inner-shrinking ring member (9); A bulging die (10) for forming the inner diameter of the ring member (9) by external expansion; There is a space between the diameter reducing die (8) and the bulging die (10) for placing the ring (9); the diameter reducing die (8) and the bulging die (10) can slide closer to or farther from each other in the radial direction; An inner diameter bulging wedge strip (17) for providing radial driving force is correspondingly installed on the inner diameter surface of the bulging die (10); a sliding groove is provided in the radial direction of the inner diameter bulging wedge strip (17) and a bulging slider (14) is installed in cooperation with the inner diameter bulging wedge strip (17); the inner diameter bulging wedge strip (17) is limited by the bulging slider (14) so that the inner diameter bulging wedge strip (17) can only slide in the radial direction; An outer diameter wedge-shaped loading bar (4) for providing radial driving force is correspondingly installed on the outer diameter surface of the reducing die (8); a sliding groove is provided in the radial direction of the outer diameter wedge-shaped loading bar (4) and a reducing slider (11) is installed in cooperation with the outer diameter wedge-shaped loading bar (4); the outer diameter wedge-shaped loading bar (4) is limited by the reducing slider (11) so that the outer diameter wedge-shaped loading bar (4) can only slide in the radial direction.

2. The independently driven ring expansion and contraction integrated forming device according to claim 1, characterized in that: A conical die (15) is installed in the inner diameter space of the inner diameter bulging wedge strips (17) spaced apart in a plurality of annular arrays; and a bulging drive device (16) capable of lifting and lowering is also included, and the bulging drive device (16) is fixedly installed at the bottom of the conical die (15).

3. The independently driven ring expansion and contraction integrated forming device according to claim 1, characterized in that: The diameter reducing dies (8) and the bulging dies (10) are both in multiple pieces and are spaced apart in a ring array.

4. The independently driven ring expansion and contraction integrated forming device according to claim 1, characterized in that: A retractable diameter-reducing pull rod (12) is installed at the bottom of the outer diameter wedge-shaped loading strip (4); and a retractable expansion pull rod (13) is installed at the bottom of the inner diameter expansion wedge-shaped strip (17).

5. The independently driven ring expansion and contraction integrated forming device according to claim 1, characterized in that: The invention also includes a work surface (1), an outer rigid restriction ring (2) is installed on the inner diameter surface of the work surface (1), a support plate (5) is fixed on the bottom of the outer rigid restriction ring (2), a wedge-shaped seat (3) is fixedly installed on the inner diameter surface of the outer rigid restriction ring (2) at intervals, and a mounting through hole for the wedge-shaped seat (3) to pass through is provided on the support plate (5).

6. The independently driven ring expansion and contraction integrated forming device according to claim 5, characterized in that: The wedge-shaped seat (3) is vertically provided with a sliding groove on which a wedge-shaped strip (6) can be slidably installed. The outer diameter wedge-shaped loading strip (4) and the inclined surface of the wedge-shaped strip (6) can slide relative to each other and are located in the sliding groove of the wedge-shaped seat (3).

7. The independently driven ring expansion and contraction integrated forming device according to claim 6, characterized in that: The bottom of the wedge strip (6) is provided with an independent diameter reduction driving device (7) that provides a lifting action; each outer diameter wedge loading strip (4) corresponds to an independent wedge strip (6), and the wedge strip (6) corresponds to an independent diameter reduction independent driving device (7); the diameter reduction independent driving device (7) can independently drive the wedge strip (6) to rise, and the wedge strip (6) causes the outer diameter wedge loading strip (4) to slide radially to drive the diameter reduction die (8) to shrink radially.

Images