CN114247801A

CN114247801A - Tail top system and spinning machine tool with same

Info

Publication number: CN114247801A
Application number: CN202111591958.9A
Authority: CN
Inventors: 孙家鑫; 朱利军
Original assignee: Changsha Super Spin Machinery Technology Co ltd
Current assignee: Changsha Super Spin Machinery Technology Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-03-29

Abstract

The invention discloses a tail top system and a spinning machine tool with the tail top system, wherein the tail top system is arranged on a balance beam of the spinning machine tool, and comprises a fixing plate for tightly supporting a workpiece on a die and a driving assembly, the driving assembly drives the fixing plate to move axially along a rotating shaft of the die to press the workpiece or release the workpiece, and the fixing plate is movably connected with a driving end of the driving assembly in a rotatable manner around the rotating shaft of the die. The tail ejecting system has the advantages of fully considering the characteristics of head spinning equipment and the characteristics of die-edge spinning of the head, along with reasonable structure arrangement, effective workpiece pressing, no interference of the workpiece rotating along with the die and the like, and the spinning machine tool with the tail ejecting system also has the advantages.

Description

Tail top system and spinning machine tool with same

Technical Field

The invention relates to the technical field of spinning equipment, in particular to a tail ejection system and a spinning machine tool with the tail ejection system.

Background

With the continuous development of the aerospace industry in China, the rocket has wider and wider requirements on large-sized end sockets, and the large-sized thin-walled end sockets are used as key components of the fuel storage tank of the ultra-large carrier rocket and play a critical role in the capacity and strength of the fuel storage tank. The mechanical property of a traditional melon-petal welded forming workpiece is always in an unstable state at a welding seam, and the traditional spinning method is easy to have the defects of local thinning, even processing fracture and the like. Although the existing processing scheme also has an integral die-free spinning process and corresponding spinning machine tool equipment, in the actual process of reverse spinning with a die and edge-closing spinning, the semi-finished blank is very inconvenient to be reversely buckled on an edge-closing die for fixing due to the large diameter of the semi-finished blank.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, fully considers the characteristics of head spinning equipment and the characteristics of head die edge-closing spinning, and provides a tail ejection system which is reasonable in structural arrangement, effectively compresses a workpiece and does not interfere the rotation of the workpiece along with a die, and a spinning machine tool with the tail ejection system.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

a tail top system is arranged on a balance beam of a spinning machine tool, comprises a fixing plate and a driving assembly, wherein the fixing plate is used for tightly supporting a workpiece on a die, the driving assembly drives the fixing plate to move axially along a rotating shaft of the die so as to press the workpiece or loosen the workpiece, and the fixing plate is movably connected with a driving end of the driving assembly in a rotatable mode around the rotating shaft of the die.

As a further improvement of the above-mentioned tail roof system:

the driving assembly comprises a connecting cylinder and a driving rod, one end of the connecting cylinder is connected to the balance beam, and the other end of the connecting cylinder faces the die; the driving rod and the rotating shaft of the mold are coaxially arranged, movably penetrate through the connecting cylinder along the axial direction of the rotating shaft of the mold, and are close to the end part of the mold to serve as driving ends and connected with the fixing plate.

The tail top system also comprises a transmission assembly, wherein the transmission assembly is connected between the fixing plate and the driving end of the driving assembly and comprises a rotating shaft, a shaft sleeve and a connecting flange; the two ends of the connecting flange are respectively connected with the driving end and the shaft sleeve, one end of the rotating shaft extends into an inner hole of the shaft sleeve, the inner hole of the shaft sleeve is rotatably connected with the outer diameter of the rotating shaft through a bearing, and the other end of the rotating shaft is connected with the fixing plate.

The end face of the connecting cylinder facing the die is provided with a stepped hole coaxial with the die rotating shaft, the diameter of the stepped hole facing one section of the die is larger than the diameter of the stepped hole facing the inner section of the connecting cylinder, the outer structure of the shaft sleeve is of a stepped shaft structure matched with the stepped hole, the small-diameter section extends into the connecting cylinder, and the stepped surface of the stepped shaft is axially limited by the stepped surface of the stepped hole.

The transmission assembly further comprises an end cover, the end cover is connected to the end portion of the large-diameter section of the shaft sleeve and used for blocking the opening of the large-diameter section of the stepped hole, and a through hole matched with the deep groove ball bearing is formed in the middle of the end cover and used for passing through the rotating shaft.

The shaft section of the rotating shaft extending out of the connecting cylinder is provided with a containing groove with an opening facing the connecting cylinder, a thrust bearing is contained in the containing groove, an inward extending flange is arranged at the edge of the middle through hole of the end cover close to the fixing plate, one side face of the flange supports the deep groove ball bearing, and the other side of the flange is connected with the thrust bearing.

The tail top system further comprises a sleeve, the sleeve is arranged in the connecting cylinder and sleeved outside the transmission assembly, and a gasket arranged on the inner wall of the end portion of the connecting cylinder in a cushioning mode is arranged at the bottom of the sleeve.

A first avoidance hole exposing the connection position of each component of the internal transmission assembly is formed in the wall of the sleeve; and a second avoiding hole for exposing the connection position of each part of the inner sleeve is formed in the wall of the connecting cylinder.

The surface of the fixing plate facing the die is provided with an arc-shaped concave area, and a curved surface symmetry axis of the concave area is positioned on a rotating shaft of the die.

A spinning machine tool comprises a balance beam, a die and the tail jacking system, wherein one end of the tail jacking system is connected to the balance beam, and the other end of the tail jacking system faces the die.

Compared with the prior art, the invention has the advantages that:

the tail cap system of the present invention may be mounted directly onto the balance beam of an existing spinning machine tool, wherein the drive assembly drives the fixed plate to move axially along the axis of rotation of the die, thereby applying a force to the workpiece in the axial direction of the die. In the edge-closing spinning process, after the edge-closing die is installed on a rotary working table, a semi-finished workpiece is hoisted to the die, certain circumferential positioning and centering are realized by matching the surface of the formed workpiece with the surface of the die, then the workpiece is pressed tightly by moving a fixing plate, the end face of the workpiece is attached to the end face of the die, so that axial fixed positioning is realized, and the stability of edge-closing processing of the workpiece is ensured. And the fixed plate can rotate around the rotating shaft of the die and is movably connected with the driving end of the driving component, so that the fixed plate can rotate along with the workpiece processing while pressing the workpiece, the workpiece processing is prevented from being interfered or the surface of the workpiece is prevented from being abraded and scratched, the structure is reasonable, meanwhile, the existing edge-retracting spinning machine tool can be used for carrying out jacking operation, the edge-retracting effect is optimized, and the overhigh cost can not be invested.

Drawings

FIG. 1 is a schematic structural view of the aft roof system of the present invention;

FIG. 2 is a cross-sectional block diagram of the aft roof system of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the construction of the bushing in the aft tip system of the present invention;

FIG. 5 is a schematic view of the structure of the sleeve of the aft tip system of the present invention;

FIG. 6 is a schematic structural diagram of a rotating shaft in the tail cap system according to the present invention;

fig. 7 is a schematic structural view of an end cap in the tail cap system of the present invention.

Illustration of the drawings: 1. a fixing plate; 2. a drive assembly; 21. a connecting cylinder; 211. a second avoidance hole; 22. a drive rod; 3. a transmission assembly; 31. a rotating shaft; 311. a containing groove; 312. a thrust bearing; 32. a shaft sleeve; 33. a connecting flange; 34. an end cap; 341. a deep groove ball bearing; 342. flashing; 4. a sleeve; 41. a gasket; 42. the first avoidance hole.

Detailed Description

In order to facilitate understanding of the invention, the invention will be described more fully and in detail with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.

Example (b):

as shown in fig. 1 and fig. 2, the tail cap system of the present embodiment, which is mounted on a balance beam of a spinning machine, includes a fixed plate 1 for pressing a workpiece against a die, and further includes a driving assembly 2, wherein the driving assembly 2 drives the fixed plate 1 to move axially along a rotation axis of the die to press the workpiece or release the workpiece. In the edge-closing spinning process, after an edge-closing die is installed on a rotary worktable, a semi-finished workpiece is hoisted to the die, certain circumferential positioning and centering are realized by matching the surface of the formed workpiece with the surface of the die, then the workpiece is pressed tightly by moving a fixing plate 1, the end face of the workpiece is attached to the end face of the die, so that axial fixed positioning is realized, and the stability of edge-closing processing of the workpiece is ensured. And the fixed plate 1 can be movably connected with the driving end of the driving component 2 around the rotating shaft of the die, so that the fixed plate 1 can rotate along with the workpiece processing while pressing the workpiece, the workpiece processing is prevented from being interfered or the surface of the workpiece is prevented from being abraded and scratched, the structure is reasonable, meanwhile, the existing edge-retracting spinning machine tool can be used for executing the jacking operation, the edge-retracting effect is optimized, and the high cost is avoided.

In this embodiment, the driving assembly 2 includes a connecting cylinder 21 and a driving rod 22, one end of the connecting cylinder 21 is connected to the balance beam, and the other end faces the mold; the driving rod 22 is arranged coaxially with the rotation axis of the mold, movably inserted in the connecting cylinder 21 in the axial direction of the rotation axis of the mold, and connected to the fixing plate 1 with its end portion near the mold as a driving end.

In this embodiment, as shown in fig. 3, the system further includes a transmission assembly 3, where the transmission assembly 3 is connected between the fixing plate 1 and the driving end of the driving assembly 2, and includes a rotating shaft 31, a shaft sleeve 32 and a connecting flange 33; the two ends of the connecting flange 33 are respectively connected with the driving end and the shaft sleeve 32, one end of the rotating shaft 31 extends into the inner hole of the shaft sleeve 32, the inner hole of the shaft sleeve 32 is rotatably connected with the outer diameter of the rotating shaft 31 through a bearing, and the other end of the rotating shaft 31 is connected with the fixing plate 1.

In this embodiment, the connecting cylinder 21 not only provides a protection function similar to a reinforcing structure for the elongated driving rod 22, but also provides a containing space for the driving rod 22 and the transmission assembly 3, and the opening at the end thereof also realizes radial limitation of the transmission assembly 3 in the driving process of the driving rod 22, guides the movement of the fixing plate 1, and ensures that the rotating shaft of the fixing plate 1 is consistent with the rotating shaft of the mold after the fixing plate 1 compresses the workpiece.

In this embodiment, as shown in fig. 3 and 4, a stepped hole coaxial with the mold rotation axis is formed on the end surface of the connecting cylinder 21 facing the mold, the diameter of the stepped hole facing one section of the mold is larger than the diameter of the stepped hole facing the other section of the connecting cylinder 21, the external structure of the shaft sleeve 32 is a stepped shaft structure adapted to the stepped hole, the small diameter section extends into the connecting cylinder 21, and the stepped surface of the stepped shaft is axially limited by the stepped surface of the stepped hole, so as to prevent the transmission assembly 3 from excessively retracting.

In this embodiment, the transmission assembly 3 further includes an end cover 34, the end cover 34 is connected to the end of the large-diameter section of the shaft sleeve 32, and seals the opening of the large-diameter section of the stepped hole, so as to achieve a sealing effect and protect the internal structure from being affected by external dust or chips generated by machining, and a through hole matched with the deep groove ball bearing 341 of the rotating shaft 31 is formed in the middle of the end cover 34.

In this embodiment, a receiving groove 311 with an opening facing the connecting cylinder 21 is formed in a shaft section of the rotating shaft 31 extending out of the connecting cylinder 21, as shown in fig. 6, a thrust bearing 312 is disposed in the receiving groove 311, an inwardly extending flange 342 is disposed at an edge of the middle through hole of the end cover 34 close to the fixing plate 1, as shown in fig. 7, one side surface of the flange 342 supports the deep groove ball bearing 341, and the other side surface is connected to the thrust bearing 312.

In this embodiment, the system further includes a sleeve 4, and the sleeve 4 is disposed in the connecting cylinder 21 and sleeved outside the transmission assembly 3, so as to further limit and guide the transmission assembly 3. Because the openings at the two ends of the connecting cylinder 21 are smaller, and the hollow diameter is larger, the inner surface is not milled flat, in order to eliminate the influence of the surface roughness on the installation precision, the bottom of the sleeve 4 is provided with a gasket 41 which is arranged on the inner wall of the end part of the connecting cylinder 21 in a cushioning mode, the gasket 41 can be connected with the connecting cylinder 21 through screws, and the leveling of the gasket 41 can be adjusted through adjusting the screws.

In this embodiment, as shown in fig. 5, the wall of the sleeve 4 is formed with a first avoiding hole 42 exposing the connection position of each component of the internal transmission assembly 3. And a second avoiding hole 211 exposing the connection position of each part of the inner sleeve 4 is formed in the wall of the connecting cylinder 21, so that each part is tightly connected during installation.

In this embodiment, the surface of the fixing plate 1 facing the mold is provided with an arc-shaped concave area, a symmetry axis of a curved surface of the concave area is located on a rotating shaft of the mold, and the concave curved surface of the structure can play a certain automatic centering function in the compressing process.

The spinning machine tool of the embodiment comprises the balance beam, the die and the tail jacking system, wherein one end of the tail jacking system is connected to the balance beam, and the other end of the tail jacking system faces the die. By adopting the tail jacking system, the spinning machine tool can realize more stable and reliable edge-closing spinning work, and does not need to additionally arrange a large jacking tool, so that the use cost is low, and the installation is convenient.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. It should be apparent to those skilled in the art that modifications and variations can be made without departing from the technical spirit of the present invention.

Claims

1. A tail cap system, comprising: install on the weighing apparatus roof beam of spinning machine, including being used for supporting fixed plate (1) tight on the mould with the work piece, still include drive assembly (2), drive assembly (2) drive fixed plate (1) are along the pivot axial activity of mould in order to compress tightly the work piece or relax the work piece, the drive end of swing joint drive assembly (2) that fixed plate (1) can rotate around the pivot of mould.

2. The aft roof system of claim 1, wherein: the driving assembly (2) comprises a connecting cylinder (21) and a driving rod (22), one end of the connecting cylinder (21) is connected to the balance beam, and the other end of the connecting cylinder faces the die; the driving rod (22) is coaxially arranged with a rotating shaft of the die, movably penetrates through the connecting cylinder (21) along the axial direction of the rotating shaft of the die, and is close to the end part of the die to be used as a driving end and connected with the fixing plate (1).

3. The aft roof system of claim 2, wherein: the transmission component (3) is connected between the fixing plate (1) and the driving end of the driving component (2) and comprises a rotating shaft (31), a shaft sleeve (32) and a connecting flange (33); the two ends of the connecting flange (33) are respectively connected with the driving end and the shaft sleeve (32), one end of the rotating shaft (31) extends into an inner hole of the shaft sleeve (32), the inner hole of the shaft sleeve (32) is rotatably connected with the outer diameter of the rotating shaft (31) through a bearing, and the other end of the rotating shaft (31) is connected with the fixing plate (1).

4. The aft roof system of claim 3, wherein: be equipped with the shoulder hole coaxial with the mould revolving axle on connecting cylinder (21) the terminal surface towards the mould, and the shoulder hole is greater than towards the inside one section diameter of connecting cylinder (21) towards one section diameter of mould, the exterior structure of axle sleeve (32) be with the step axle structure of this shoulder hole adaptation, and little diameter section stretches into in connecting cylinder (21), and the step face of step axle is spacing by the step face axial of shoulder hole.

5. The aft roof system of claim 4, wherein: the transmission assembly (3) further comprises an end cover (34), the end cover (34) is connected to the end portion of the large-diameter section of the shaft sleeve (32) and blocks the opening of the large-diameter section of the stepped hole, and a through hole matched with the rotating shaft (31) through a deep groove ball bearing (341) is formed in the middle of the end cover (34).

6. The aft roof system of claim 5, wherein: the axial section of pivot (31) stretching out connecting cylinder (21) is equipped with opening towards containing groove (311) of connecting cylinder (21), and thrust bearing (312) have been put to containing groove (311), the middle part through-hole of end cover (34) is equipped with inside extension's overlap (342) at the edge that is close to fixed plate (1), overlap (342) side is held deep groove ball bearing (341), and the opposite side is connected thrust bearing (312).

7. The aft roof system of claim 3, wherein: still include sleeve (4), sleeve (4) are arranged in connecting cylinder (21) to the cover is established outside transmission assembly (3), and the bottom of sleeve (4) is equipped with packing ring (41) that the pad was established on connecting cylinder (21) tip inner wall.

8. The aft roof system of claim 7, wherein: a first avoidance hole (42) exposing the connection position of each component of the internal transmission assembly (3) is formed in the wall of the sleeve (4); and a second avoidance hole (211) exposing the connection position of each part of the inner sleeve (4) is formed in the wall of the connecting cylinder (21).

9. The aft roof system of claim 1, wherein: the surface of the fixing plate (1) facing the die is provided with an arc-shaped concave area, and a curved surface symmetry axis of the concave area is positioned on a rotating shaft of the die.

10. A spinning machine tool is characterized in that: comprising a balance beam, a mould and a tail cap system according to any one of claims 1 to 9, the tail cap system being connected at one end to the balance beam and at the other end towards the mould.