Single-cylinder pull-down type ring piece bulging machine
By optimizing the structure of the single-cylinder pull-down ring forming machine, adopting a single-cylinder single-tie rod design and hydraulic drive, the problems of complex structure and internal stress elimination of the ring forming machine are solved, and uniform ring forming and strength improvement are achieved.
Patent Information
- Application Number
- CN202423317125.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing ring forming machines have complex structures, are cumbersome to maintain, and are difficult to efficiently reduce machining allowances and eliminate internal stresses from heat treatment. They are particularly costly and inconvenient to operate during the forging of large and medium-sized rings.
A single-cylinder pull-down ring forming machine is adopted. Through optimized structural design, a single-cylinder single-rod structure is used, combined with a hydraulic motor to drive the rotating rod and the retraction cylinder, to achieve uniform expansion and rotation of the ring, reduce ellipticity and taper, and eliminate internal stress.
This method achieves uniform radial growth of the ring, reduces machining allowance, lowers production costs, effectively eliminates heat treatment internal stress in the aluminum alloy ring, and improves the ring's strength.
Smart Images
Figure CN223629336U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ring rolling mill technical field, concretely is a single cylinder down -draw type ring piece bulging machine. BACKGROUND
[0002] In the forging and rolling expansion process of the ring piece, because of the control precision, the ring piece ovality and the ring piece taper problem, a larger machining allowance needs to be left for the ring piece. When forging the ring piece of high unit price and scarce material such as high-temperature alloy and titanium alloy, the larger machining allowance leads to excessively high production cost. After heat treatment of part of the aluminum alloy ring piece, in addition to the deformation ovality caused by heat treatment, there is also heat treatment internal stress in the material. When used in the field of aviation and aerospace, the heat treatment internal stress must be eliminated through ring piece bulging to improve the strength of the ring piece. Generally, the ring piece bulging is realized by the ring piece bulging machine to reduce the machining allowance and eliminate the internal stress.
[0003] The current ring piece bulging machine has the up-push type and the down-draw type. The up-push type is mostly used for small ring piece bulging. The down-draw type is mostly used for large and medium-sized ring piece bulging machines with multiple cylinder and multiple pull rod structures. However, the current down-draw type multiple cylinder and multiple pull rod bulging machine has a complex structure, a cumbersome maintenance process and is not easy to operate. UTILITY MODEL CONTENTS
[0004] In order to solve the above problems, the purpose of the utility model is to provide a single cylinder down-draw type ring piece bulging machine.
[0005] To achieve the above purpose, the technical scheme of the utility model is as follows: a single cylinder down-draw type ring piece bulging machine, comprising a bottom plate and a vertical main oil cylinder arranged on the bottom plate, the upper end of the main oil cylinder extending through a support seat and a workbench above the support seat, a downward pyramid assembly is fixed to the upper end of the main oil cylinder above the workbench, a plurality of L-shaped slidingly arranged outer petal assemblies are uniformly arranged on the surface of the pyramid assembly, and the outer petal assemblies are arranged around the center of the pyramid assembly, the inner end of the outer petal assembly is tightly attached to the outer side wall of the pyramid assembly, so that when the pyramid assembly moves downward, the outer side wall of the pyramid assembly pushes the outer petal assembly to move outward in a radial manner.
[0006] Further, a rotatable rotating rod is arranged on the upper surface of the horizontal part of each outer petal assembly, and the rotating rod is driven to rotate by a hydraulic motor arranged at the outer end of the outer petal assembly.
[0007] Further, an auxiliary support frame is arranged at the outer end of the horizontal part of each outer petal assembly, and the horizontal part of the outer petal assembly is slidingly supported on the upper surface sliding way of the auxiliary support frame.
[0008] Further, the lower surface of the workbench is fixed with the same number of retraction oil cylinders as the outer petal assembly, the outer end of the retraction oil cylinder is rotationally connected with the outer end bottom of the horizontal part of the outer petal assembly, and the retraction oil cylinders are arranged along the retraction direction of the outer petal assembly.
[0009] Further, the support base comprises a circular base at the bottom and support columns uniformly arranged around the outer periphery of the main oil cylinder.
[0010] Further, the rotating rods are at least three groups and are arranged around the center of the pyramid assembly.
[0011] Further, the bottom of the support column is reinforcedly connected with the surface of the circular base of the support base through a plurality of triangular reinforcing plates.
[0012] Through the above arrangement, the utility model optimizes the structure design, adopts single-cylinder single-pull rod, and uniformly forces each outer petal assembly, so that when the pyramid assembly moves downward, the outer side wall of the pyramid assembly pushes the outer petal assembly to move outward in a radial manner, reduces the oval, taper and other phenomena of the ring piece, realizes the forging processing of the ring piece within a certain size range, makes the ring piece uniformly realize the radial size growth, reduces the processing allowance of the ring piece, reduces the production cost, effectively eliminates the internal stress of the aluminum alloy ring piece during heat treatment, and improves the strength of the ring piece. BRIEF DESCRIPTION OF DRAWINGS
[0013] The utility model will be further described in combination with the drawings.
[0014] Fig. 1 It is the three-dimensional structure schematic view of the utility model;
[0015] Fig. 2 It is the cross section structure schematic view of the utility model installation state. PREFERRED EMBODIMENT
[0016] As Figs. 1-2As shown, a single-cylinder down-pull ring expander, including the base plate 1 and the vertical main oil cylinder 2 arranged on the base plate 1, the base plate 1 bears the overall main weight, and the foundation level is compensated and the equipment overall is leveled by using the adjusting pad iron, which plays a good supporting role on the overall weight, the upper end of the main oil cylinder 2 extends through the support seat 3 and the workbench 4 above the support seat 3, the upper end of the main oil cylinder 2 above the workbench 4 is fixed with a downward pyramid assembly 5, a plurality of L-shaped slidingly arranged outer petal assemblies 6 are uniformly arranged on the surface of the pyramid assembly 5, and the outer petal assemblies 6 are arranged around the center of the pyramid assembly 5, the inner end of the outer petal assembly 6 is tightly attached to the outer side wall of the pyramid assembly 5, a mold is installed on the outer surface of the outer petal assembly 6, the inner hole of the ring to be expanded is placed on the mold, and under the drive of the pyramid assembly 5, the ring is radially expanded by moving along the radial direction, that is, when the pyramid assembly 5 moves downward, the outer side wall of the pyramid assembly 5 pushes the outer petal assembly 6 to move outward in a radial manner.
[0017] Specifically, the rotating rod 7 has at least three groups and is arranged around the center of the pyramid assembly 5, and the rotating rod 7 is driven to rotate by the hydraulic motor 8 arranged at the outer end of the outer petal assembly 6, which can realize the circumferential rotation of the ring on the equipment and ensure uniform expansion; the horizontal part of each outer petal assembly 6 is provided with an auxiliary support frame 9 at the outer end, and the horizontal part of the outer petal assembly 6 is slidingly supported on the upper surface slide of the auxiliary support frame 9, and the auxiliary support frame 9 is adjusted by adjusting the pad iron to support the outer part of the outer petal assembly 6.
[0018] The lower surface of the workbench 4 is fixed with a number of retraction oil cylinders 10 same as the outer petal assembly 6, the outer end of the retraction oil cylinder 10 is connected with the outer end bottom of the horizontal part of the outer petal assembly 6, and the retraction oil cylinder 10 is arranged along the retraction direction of the outer petal assembly 6.
[0019] The support seat 3 includes a circular base at the bottom and support columns 11 uniformly arranged around the extension of the main oil cylinder 2, the upper end of the support column 11 is fixedly connected with the lower surface of the workbench 4, and the bottom of the support column 11 is reinforcedly connected with the surface of the circular base of the support seat 3 through a plurality of triangular reinforcing plates 12.
[0020] The working principle of the utility model:
[0021] When the ring piece is expanded, first, the mold on the outer lobe assembly 6 is adjusted, so that when the pyramid assembly 5 is at the highest position, the outer diameter of the outer lobe assembly 6 meets the requirements of the ring piece to be expanded; then the ring piece to be expanded is placed on the equipment by hoisting, and the inner hole is placed on the mold; then under the drive of the main oil cylinder 2, the pyramid assembly 5 is pulled down, the outer lobe assembly 6 is driven to expand outward along the radial direction in the guide groove of the workbench 4 through the outer inclined surface of the pyramid assembly 5, so that the radial growth of the ring piece is realized; after a small amount of expansion, under the drive of the main oil cylinder 2, the pyramid assembly 5 is appropriately stretched, the outer lobe assembly 6 is retracted by the retracting oil cylinder 10, and after it is ensured that there is no extrusion force between the outer lobe assembly 6 and the ring piece, the rotating rod 7 is uniformly distributed in the circumferential outer lobe assembly 6, the rotating rod 7 is driven by the hydraulic motor 8, the ring piece is rotated to adjust the rotation angle; then the pyramid assembly 5 is pulled down again by the main oil cylinder 2, and the ring piece is expanded for the second and third times, so that the uniformity of the ring piece expansion is ensured when the ring piece reaches the target size, and the taper and roundness of the ring piece are reduced;
[0022] That is, the entire working process can be simply described as: placing the ring piece → expanding → retracting and resetting → rotating → expanding → retracting and resetting → rotating → expanding → … → ending.
[0023] The above merely describes the specific implementation of the present application, and is not used to limit the scope of the present application. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of the present application shall fall within the scope of the present application.
Claims
1. A single-cylinder down-draw ring expander machine comprising a base plate (1) and a vertical main oil cylinder (2) arranged on the base plate (1), characterized in that: The upper end of the main oil cylinder (2) is arranged through the support base (3) and the workbench (4) above the support base (3), the upper end of the main oil cylinder (2) is fixed with a downward pyramid assembly (5) above the workbench (4), a plurality of L-shaped sliding outer petal assembly (6) are uniformly arranged on the surface of the pyramid assembly (5), and the outer petal assembly (6) is arranged around the center of the pyramid assembly (5), the inner end of the outer petal assembly (6) is tightly attached to the outer side wall of the pyramid assembly (5), so that the outer side wall of the pyramid assembly (5) pushes the outer petal assembly (6) to move outward in a radial manner when the pyramid assembly (5) moves downward.
2. A single cylinder, downward drawing, ring expander machine as claimed in claim 1 wherein: The upper surface of the horizontal part of the plurality of outer petal assemblies (6) is provided with a rotatable rotating rod (7), and the rotating rod (7) is driven to rotate by the hydraulic motor (8) arranged at the outer end of the outer petal assembly (6).
3. A single cylinder, downward drawing, ring expander machine as claimed in claim 1 wherein: The horizontal part of each outer petal assembly (6) is provided with an auxiliary support frame (9), and the horizontal part of the outer petal assembly (6) is supported on the upper surface of the auxiliary support frame (9).
4. A single cylinder, downward drawing, ring expander machine as claimed in claim 1 wherein: The lower surface of the workbench (4) is fixed with a number of retraction oil cylinders (10) same as the outer petal assembly (6), the outer end of the retraction oil cylinder (10) is connected with the outer end of the outer petal assembly (6), and the retraction oil cylinder (10) is arranged along the retraction direction of the outer petal assembly (6).
5. A single cylinder, downward drawing, ring expander machine as claimed in claim 1 wherein: The support base (3) includes a circular base at the bottom and support columns (11) uniformly arranged around the outer periphery of the main oil cylinder (2), and the upper end of the support column (11) is fixedly connected with the lower surface of the workbench (4).
6. A single cylinder, downward drawing, ring expander machine as claimed in claim 2 wherein: The rotating rod (7) has at least three groups, and is arranged around the center of the pyramid assembly (5).
7. A single cylinder, downward drawing, ring expander machine as claimed in claim 5 wherein: The bottom of the support column (11) is connected with the surface of the circular base of the support base (3) through a plurality of triangular reinforcing plates (12).