CN109604475B - Forming method of high-temperature alloy thin-wall annular closed groove - Google Patents

Forming method of high-temperature alloy thin-wall annular closed groove Download PDF

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Publication number
CN109604475B
CN109604475B CN201811494921.2A CN201811494921A CN109604475B CN 109604475 B CN109604475 B CN 109604475B CN 201811494921 A CN201811494921 A CN 201811494921A CN 109604475 B CN109604475 B CN 109604475B
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annular
groove
assembly
blank
supporting
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CN109604475A (en
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杜松
夏敏
李又春
丛霄
徐胜
秦诗凡
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AECC South Industry Co Ltd
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AECC South Industry Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling

Abstract

The invention discloses a method for forming a high-temperature alloy thin-wall annular closed groove, which comprises the following steps of: processing to obtain a circular ring blank with a right-angle groove-shaped cross section, wherein the circular ring blank is provided with an annular outer vertical groove wall, an annular groove bottom plate and an annular inner vertical groove wall; clamping a fixing ring groove bottom plate, and arranging the notches of the circular ring blank downwards; carrying out in-groove support on the annular outer vertical groove wall, and processing the annular outer vertical groove wall by adopting a rolling way; the groove inner support type of the annular outer vertical groove wall adopts a split structure, and the disassembly and the demolding are respectively carried out after the outer annular groove is processed; carrying out in-groove support on the wall of the annular inner vertical groove, and processing the wall of the annular inner vertical groove by adopting a rolling way; adopting a split structure for an in-groove support structure of the annular inner vertical groove wall, and respectively disassembling and demolding after the inner annular groove is processed; and removing the processed parts to obtain the high-temperature alloy thin-wall annular closed groove.

Description

Forming method of high-temperature alloy thin-wall annular closed groove
Technical Field
The invention relates to the technical field of machining of an inner winding groove of an annular part of an aircraft engine, in particular to a method for forming a high-temperature alloy thin-wall annular closed groove.
Background
A high-temperature alloy thin-wall annular closed groove part belongs to a component part of an aeroengine and is shown in figure 1. As shown in figure 2, the thickness of the part is about 0.5mm, the material is high-temperature alloy, the material strength is high, the processing needs higher forming force, the part is of an annular closed structure, the local characteristic forming difficulty of the processing method adopting the traditional steel die is realized, the surface of the part bears the compressive stress in the forming process, and the defect that the supporting strength of the clamp is not enough and wrinkling easily occurs cannot meet the requirements of the size precision and the planeness of the part because the closed space of the part is smaller.
After the part is formed, due to structural limitation, the clamp cannot be taken out of the part under the condition that the traditional rigid mold meets the forming pressure of the part, the structure and the size of the part can be damaged when the clamp is taken out, and the design requirement cannot be met.
Disclosure of Invention
The invention provides a method for forming a high-temperature alloy thin-wall annular closed groove, which aims to solve the technical problem that a clamp cannot be taken out of a part after the part is machined and formed in the method for forming the high-temperature alloy thin-wall annular closed groove.
The invention provides a method for forming a high-temperature alloy thin-wall annular closed groove, wherein a high-temperature alloy thin-wall annular closed groove part of an aircraft engine is annular, and the outer edge and the inner edge of the part are relatively curled to form an annular inward-curling groove, and the method comprises the following steps: processing to obtain a circular ring blank with a right-angle groove-shaped cross section, wherein the circular ring blank is provided with an annular outer vertical groove wall, an annular groove bottom plate and an annular inner vertical groove wall; clamping a fixing ring groove bottom plate, and arranging the notches of the circular ring blank downwards; carrying out groove internal support on the annular outer vertical groove wall, and processing the annular outer vertical groove wall in a rolling manner to enable the annular outer vertical groove wall to be processed into an outer annular groove; the groove inner support type of the annular outer vertical groove wall adopts a split structure, and the disassembly and the demolding are respectively carried out after the outer annular groove is processed; carrying out in-groove support on the annular inner vertical groove wall, and processing the annular inner vertical groove wall in a rolling manner to enable the annular inner vertical groove wall to be processed into an inner annular groove; adopting a split structure for an in-groove support structure of the annular inner vertical groove wall, and respectively disassembling and demolding after the inner annular groove is processed; and removing the processed parts to obtain the high-temperature alloy thin-wall annular closed groove.
Furthermore, the equipment adopted for processing the outer annular groove is processing equipment for the outer annular groove of the annular piece; the processing equipment comprises a first bottom supporting assembly, a first annular supporting assembly, a first pressing assembly and a first spinning roller device, wherein the first bottom supporting assembly is used for supporting and positioning from the bottom, the first annular supporting assembly is fixed on the first bottom supporting assembly and used for being sleeved in a groove of the annular blank from the bottom and forming an annular groove forming surface on the outer side of the annular blank; the first annular supporting assembly is provided with a demoulding loose piece which is used for radially removing the annular blank after the outer annular groove of the annular blank is rolled and formed.
Further, the specific processing steps of the outer annular groove are as follows: sequentially assembling a first bottom support component and a first annular support component on the working table of the machine tool, and positioning, aligning and locking the first bottom support component on the working table of the machine tool; buckling the notch of the circular ring blank on the first annular support assembly so that the annular groove bottom plate of the circular ring blank is attached to the upper surface of the first annular support assembly and the annular outer vertical groove wall of the circular ring blank is in contact with the support surface of the first annular support assembly; then assembling a first pressing assembly, coaxially centering and axially pressing the first pressing assembly, the annular blank piece, the first annular supporting assembly and the first bottom supporting assembly by using the first pressing assembly, and meanwhile forcing the first annular supporting assembly to be assembled in place and forming a supporting force opposite to the rolling acting force of the first spinning roller device; driving a first spinning roller device to be close to the annular outer vertical groove wall of the annular blank along the radial direction of the annular blank through a machine tool; when the annular outer vertical groove wall is attached, the annular outer vertical groove wall rolls along the circumferential direction of the circular ring blank and gradually exerts pressure along the radial direction until the annular outer vertical groove wall is completely attached to the lower surface of the forming surface of the first annular support assembly; moving out the first spinning roller device, and dismantling the first pressing assembly; the demoulding loose piece is stretched into and removed from the middle cavity of the outer annular groove, so that other parts of the first annular support assembly are pulled out from the outer annular groove; and disassembling the machined part and the residual structure, thereby finishing the machining of the outer annular groove of the part.
Furthermore, the first annular support assembly comprises a plurality of splicing units, the demoulding loose block and the splicing units are sequentially attached, spliced and combined in a gapless manner to form an annular assembly, the upper surface of the annular assembly is used for being attached to the bottom plate of the annular groove of the annular blank, and the forming surface of the annular assembly is used for being attached to the annular outer vertical groove wall of the annular blank; the assembling unit comprises a first unit piece attached to the demolding loose piece and a second unit piece, wherein both sides of the second unit piece are not attached to the demolding loose piece; the binding surfaces of the two sides of the second unit element are arranged along the radial direction of the annular assembly, the binding surfaces of the two sides of the demoulding loose piece are a group of parallel surfaces which are parallel to each other, and the first unit element is provided with a first binding surface matched with the binding surface of the demoulding loose piece and a second binding surface matched with the binding surface of the second unit element.
The annular groove forming device comprises a first annular supporting assembly, a first bottom supporting assembly, a first annular inclined block and a first annular stop block, wherein the upper end face of the first annular supporting assembly extends outwards along the horizontal direction to form an annular forming face of an outer annular groove for rolling and forming an outer annular groove of an annular outer vertical groove wall of an annular blank, the inner wall face of the first annular supporting assembly is a conical face with the radial size being large at the bottom, the first bottom supporting assembly comprises a first annular inclined block and a first annular stop block, the first annular inclined block is located in the ring of the first annular supporting assembly and used for being matched with the conical face of the first annular supporting assembly and used for pressing the first annular supporting assembly from the inside of the first annular supporting assembly, the first annular stop block is located on the periphery of the first annular supporting assembly and used for limiting the first annular supporting assembly from the outer side of the first annular supporting assembly, the lower surface of the annular forming face is provided with an inclined face with the inner side inclined upwards, and an included angle 35.
Furthermore, the equipment adopted for processing the inner side annular groove is processing equipment of the inner side annular groove of the annular piece; the processing equipment comprises a second bottom supporting assembly used for supporting and positioning from the bottom, a second annular supporting assembly fixed on the second bottom supporting assembly and used for supporting and sleeving the second bottom in a groove of the annular blank and forming an annular groove forming surface on the inner side of the annular blank, a second pressing assembly located above the second annular supporting assembly and used for pressing the annular groove bottom plate of the annular blank onto the second annular supporting assembly, and a second spinning roller device located in an inner cavity of the second annular supporting assembly and used for rolling the annular inner vertical groove wall of the annular blank on the second annular supporting assembly into an inner annular groove in a rolling mode; the second annular support assembly is formed by attaching a plurality of fan-shaped movable blocks along the circumferential direction without gaps, and the second annular support assembly is matched with the second bottom support assembly by adopting a conical surface.
Further, the specific processing steps of the inner annular groove are as follows: a second bottom support component and a second annular support component are sequentially assembled on the working table of the machine tool, and the second bottom support component is used for positioning, aligning and locking the second bottom support component on the working table of the machine tool; buckling the notch of the circular ring blank on the second annular support assembly so that the bottom plate of the circular ring blank is attached to the upper surface of the second annular support assembly and the circular inner vertical groove wall of the circular ring blank is in contact with the support surface of the second annular support assembly; then assembling a second pressing assembly, and applying vertical pressing force by using the second pressing assembly to force the second annular support-shaped assembly to be assembled in place under the cooperation of the conical surfaces and form supporting force opposite to the rolling acting force of the second spinning roller device; the machine tool drives the second spinning roller device to extend into an operation hole of the second pressing assembly and descend to a preset position, and the rolling operation surface is controlled to be close to the annular inner vertical groove wall of the annular blank along the radial direction of the annular blank; when the rolling operation surface is attached to the annular inner vertical groove wall, the rolling operation surface rolls along the circumferential direction of the circular ring blank and gradually applies pressure along the radial direction until the annular inner vertical groove wall is completely attached to the lower surface of the forming surface of the second annular support assembly; moving out the second spinning roller device, and dismantling the second pressing assembly; and taking the processed part and the second annular support assembly out of the second bottom support assembly simultaneously, and applying radial outward pulling acting force to each movable block of the second annular support assembly respectively to enable the movable blocks to be loosened and separated from the inner annular groove, so that the inner annular groove of the part is processed.
Furthermore, the movable blocks are the same in shape and size; the movable blocks comprise inner arc surfaces and outer arc surfaces, the inner arc surfaces are radially attached to the second bottom support assembly, the outer arc surfaces are radially attached to the second bottom support assembly, the inner arc surfaces are arranged in the vertical direction, the upper ends of the outer arc surfaces incline outwards in the radial direction to form conical arc surfaces, the conical arc surfaces are matched with the conical surfaces of the second bottom support assembly to force the inner arc surfaces to be tightly attached to the second bottom support assembly in the radial direction, and therefore all the movable blocks are guaranteed to be assembled in place and form radial support when the second spinning roller device is used for machining.
The upper part of the outer arc surface of the movable block extends outwards along the radial direction to form an outer supporting platform which is used for assisting in supporting the second pressing component and ensuring supporting balance, the upper end of the inner arc surface of the movable block extends inwards along the radial direction to form a forming convex ring which is used for supporting the bottom plate part of the annular groove of the annular blank from the bottom and is in contact with the inner vertical groove wall of the annular groove to form a rolling forming surface of the inner annular groove, the lower surface of the forming convex ring is provided with an inclined surface with one cantilever side inclined downwards, an included angle α is formed between the inclined surface and the horizontal plane and is used for offsetting elastic rebound after rolling forming of the inner annular groove, the vertical height of the outer supporting platform is lower than that of the forming convex ring, the outer supporting platform and the forming convex ring form a stepped structure with high inside and low outside, the bottom surface of the inner side of the second pressing component presses the bottom plate part of the annular groove of the annular blank onto the upper surface of the forming convex ring, and the.
Further, the circular ring blank is manufactured by adopting a stamping, cutting, pouring, forging or smelting mode according to the design requirement; firstly, processing the annular outer vertical groove wall of the annular blank, and then processing the annular inner vertical groove wall; or the annular inner vertical groove wall of the annular blank is firstly processed, and then the annular outer vertical groove wall is processed.
The invention has the following beneficial effects:
the invention relates to a method for forming a high-temperature alloy thin-wall annular closed groove, which is specially used for forming and processing parts of the high-temperature alloy thin-wall annular closed groove of an aeroengine and is used for processing a U-shaped groove of a circular ring blank with a U-shaped groove into an inner rolling groove with an outer edge and an inner edge which are relatively curled, namely processing an annular outer vertical groove wall into an outer annular groove and processing an annular inner vertical groove wall into an inner annular groove. And (3) clamping and fixing the annular groove bottom plate of the annular blank by adopting a clamping mode, and respectively performing roll forming on the annular outer vertical groove wall and the inner annular groove by adopting a mode of in-groove support and combining an outer rolling mode. The outer side annular groove or the inner side annular groove after roll forming is coated outside the in-groove supporting structure, so that the in-groove supporting structure is difficult to demould, the in-groove supporting structure is manufactured into a split structure, and through a split disassembly mode, each split unit of the in-groove supporting structure is separated from the processed outer side annular groove or the processed inner side annular groove along the radial direction and the circumferential direction by micro-vibration force application, so that nondestructive demould is realized, and the processing precision and the yield of the processed aeroengine high-temperature alloy thin-wall annular closed groove part are ensured. The whole forming method is stable in clamping, is formed in a rolling mode, has small damage to the structure, is simple and easy to apply, is convenient to demould, and is suitable for processing and demoulding closed grooves of various annular parts.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a method for forming a thin-walled annular closed superalloy groove;
FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1;
FIG. 3 is a flow chart illustrating the steps of a method for forming a thin-walled annular closed superalloy groove in accordance with a preferred embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a ring blank of the preferred embodiment of the present invention;
FIG. 5 is a schematic structural view of a machining apparatus for an annular groove on the outer side of a ring-shaped member according to a preferred embodiment of the present invention;
FIG. 6 is a schematic top view of the first base support assembly of the preferred embodiment of the present invention;
FIG. 7 is a cross-sectional structural schematic view of the first bottom support assembly of the preferred embodiment of the present invention;
FIG. 8 is a schematic view of the outer annular groove machining of the preferred embodiment of the present invention;
FIG. 9 is a schematic structural view of a machining apparatus for an annular groove inside a ring-shaped member according to a preferred embodiment of the present invention;
FIG. 10 is a schematic structural view of a movable block according to a preferred embodiment of the present invention;
FIG. 11 is a schematic top view of a second base support assembly in accordance with a preferred embodiment of the present invention;
FIG. 12 is a cross-sectional structural view of the second bottom support assembly of the preferred embodiment of the present invention;
fig. 13 is a schematic view of the machining of the inner annular groove of the preferred embodiment of the present invention.
Illustration of the drawings:
1. a circular ring blank; 101. an annular outer vertical slot wall; 102. a bottom plate of the annular groove; 103. an annular inner vertical slot wall; 2. a first bottom support assembly; 201. a first annular swash block; 202. a first annular stop; 3. a first annular bracing assembly; 301. demolding the loose piece; 302. a first unit piece; 303. a second unit piece; 4. a first hold-down assembly; 5. a first spinning roller device; 6. a second bottom support assembly; 7. a second annular bracing assembly; 701. a movable block; 7011. an outer support platform; 7012. forming a convex ring; 8. a second hold-down assembly; 9. and the second spinning roller device.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic structural view of a method for forming a thin-walled annular closed superalloy groove; FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1; FIG. 3 is a flow chart illustrating the steps of a method for forming a thin-walled annular closed superalloy groove in accordance with a preferred embodiment of the present invention; FIG. 4 is a schematic cross-sectional view of a ring blank of the preferred embodiment of the present invention; FIG. 5 is a schematic structural view of a machining apparatus for an annular groove on the outer side of a ring-shaped member according to a preferred embodiment of the present invention; FIG. 6 is a schematic top view of the first base support assembly of the preferred embodiment of the present invention; FIG. 7 is a cross-sectional structural schematic view of the first bottom support assembly of the preferred embodiment of the present invention; FIG. 8 is a schematic view of the outer annular groove machining of the preferred embodiment of the present invention; FIG. 9 is a schematic structural view of a machining apparatus for an annular groove inside a ring-shaped member according to a preferred embodiment of the present invention; FIG. 10 is a schematic structural view of a movable block according to a preferred embodiment of the present invention; FIG. 11 is a schematic top view of a second base support assembly in accordance with a preferred embodiment of the present invention; FIG. 12 is a cross-sectional structural view of the second bottom support assembly of the preferred embodiment of the present invention; fig. 13 is a schematic view of the machining of the inner annular groove of the preferred embodiment of the present invention.
As shown in fig. 3 and 4, in the method for forming a thin-walled annular closed superalloy groove of this embodiment, a component of the thin-walled annular closed superalloy groove of an aircraft engine is annular, and an outer edge and an inner edge of the component are relatively curled to form an annular inward-curling groove, which includes the following steps: processing to obtain a circular ring blank 1 with a right-angle groove-shaped cross section, wherein the circular ring blank 1 is provided with an annular outer vertical groove wall 101, an annular groove bottom plate 102 and an annular inner vertical groove wall 103; clamping a fixing ring groove bottom plate 102, and arranging the notches of the circular ring blank 1 downwards; performing in-groove support on the annular outer vertical groove wall 101, and processing the annular outer vertical groove wall 101 in a rolling manner to enable the annular outer vertical groove wall 101 to be processed into an outer annular groove; the groove inner support type of the annular outer vertical groove wall 101 adopts a split structure, and the disassembly and the demolding are respectively carried out after the outer annular groove is processed; carrying out in-groove support on the annular inner vertical groove wall 103, and processing the annular inner vertical groove wall 103 in a rolling manner so as to process the annular inner vertical groove wall 103 into an inner annular groove; an in-groove support structure of the annular inner vertical groove wall 103 adopts a split structure, and the disassembly and the demolding are respectively carried out after the inner annular groove is processed; and removing the processed parts to obtain the high-temperature alloy thin-wall annular closed groove. The forming method of the high-temperature alloy thin-wall annular closed groove is specially used for forming and processing high-temperature alloy thin-wall annular closed groove parts of an aeroengine, and is used for processing the U-shaped groove of a circular ring blank 1 with the U-shaped groove into an inner rolling groove with an outer edge and an inner edge which are relatively curled, namely processing an annular outer vertical groove wall 101 into an outer annular groove, and processing an annular inner vertical groove wall 103 into an inner annular groove. The annular groove bottom plate 102 of the annular blank 1 is clamped and fixed in a clamping mode, and the annular outer vertical groove wall 101 and the inner annular groove are respectively formed in a rolling mode by combining an in-groove supporting mode with an outer rolling mode. The outer side annular groove or the inner side annular groove after roll forming is coated outside the in-groove supporting structure, so that the in-groove supporting structure is difficult to demould, the in-groove supporting structure is manufactured into a split structure, and through a split disassembly mode, each split unit of the in-groove supporting structure is separated from the processed outer side annular groove or the processed inner side annular groove along the radial direction and the circumferential direction by micro-vibration force application, so that nondestructive demould is realized, and the processing precision and the yield of the processed aeroengine high-temperature alloy thin-wall annular closed groove part are ensured. The whole forming method is stable in clamping, is formed in a rolling mode, has small damage to the structure, is simple and easy to apply, is convenient to demould, and is suitable for processing and demoulding closed grooves of various annular parts.
As shown in fig. 5, 6 and 7, in the present embodiment, the device used for processing the outer annular groove is a device for processing the outer annular groove of the ring-shaped member. The processing equipment comprises a first bottom supporting assembly 2 used for supporting and positioning from the bottom, a first annular supporting assembly 3 fixed on the first bottom supporting assembly 2 and used for being sleeved in a groove of the annular blank 1 from the bottom and forming an annular groove forming surface on the outer side of the annular blank 1, a first pressing assembly 4 located above the first annular supporting assembly 3 and used for pressing the annular groove bottom plate 102 of the annular blank 1 on the first annular supporting assembly 3, and a first spinning roller device 5 located on the periphery of the first annular supporting assembly 3 and used for enabling the annular outer vertical groove wall 101 of the annular blank 1 to be rolled into an outer annular groove on the first annular supporting assembly 3 in a rolling mode. The first annular support component 3 is provided with a demoulding loose piece 301 which is used for radially releasing the annular blank 1 after the outer annular groove of the annular blank 1 is rolled and formed. The first bottom support component 2 is used for aligning and positioning the whole machining equipment on the working table of the machine tool so as to ensure that the machining equipment and the driving end of the machine tool form an accurate relative position relationship, thereby being beneficial to subsequent part machining. The annular groove bottom plate 102 of the annular blank 1 is clamped up and down along the axial direction of the annular blank 1 by the first pressing component 4 and the first annular support component 3, so that the structural stability of the annular blank 1 during processing is ensured. The first annular bracing component 3 is used as an inner bracing piece when the annular outer vertical groove wall 101 of the annular blank 1 is roll-formed. When the first spinning roller device 5 contacts the annular outer vertical groove wall 101, one rolling part of the first spinning roller device 5 rolls along the circumferential direction of the annular blank 1, and rolling pressure is applied along the radial direction of the annular blank 1 to force the annular outer vertical groove wall 101 to gradually attach to the forming surface of the first annular support assembly 3, so that the conversion from the annular outer vertical groove wall 101 to the outer annular groove is completed. After the processing is finished, the first pressing assembly 4 is detached, then the demolding movable block 301 is separated from the inner cavity of the processing equipment along the radial direction of the processed part to the center shaft position for force application, so that the first annular support assembly 3 is dispersed and can be separated easily, the part with the outer side annular groove after the processing is convenient to take out easily from the processing equipment without obstruction, no damage can be caused to the part, and the integrity of the processed part is ensured. In the assembling process of the processing equipment, the first pressing component 4, the annular blank 1, the first annular support component 3 and the first bottom support component 2 can be centered through the first pressing component 4, so that the subsequent processing precision is ensured. The processing equipment has simple structure and convenient demoulding, eliminates the obstruction to the demoulding of the parts and ensures that the processed parts can be taken out without damage. The die is suitable for processing and demoulding the outer annular grooves of various annular parts. When the annular outer vertical groove wall 101 rolls on the first annular support assembly 3 to form an outer annular groove, an operation space for demolding is reserved between the back surface of the first annular support assembly 3 and the machined and formed part.
As shown in fig. 5, 6, 7 and 8, in the present embodiment, the specific processing steps of the outer annular groove are as follows: a first bottom support component 2 and a first annular support component 3 are sequentially assembled on the working table surface of the machine tool, and the first bottom support component 2 is used for positioning, aligning and locking the machine tool on the working table surface of the machine tool. The notch of the circular ring blank 1 is buckled on the first circular ring support component 3, so that the circular ring bottom plate 102 of the circular ring blank 1 is attached to the upper surface of the first circular ring support component 3, and the circular outer vertical groove wall 101 of the circular ring blank 1 is contacted with the support surface of the first circular ring support component 3. And then assembling a first pressing component 4, coaxially centering and axially pressing the first pressing component 4, the annular blank 1, the first annular supporting component 3 and the first bottom supporting component 2 by using the first pressing component 4, and meanwhile, forcing the first annular supporting component 3 to be assembled in place and forming a supporting force opposite to the rolling force of the first spinning roller device 5. The first spinning roller device 5 is driven by the machine tool to approach the annular outer vertical groove wall 101 of the annular blank 1 along the radial direction of the annular blank 1. When the annular outer vertical groove wall 101 is attached, the annular outer vertical groove wall rolls along the circumferential direction of the circular ring blank 1 and gradually exerts pressure along the radial direction until the annular outer vertical groove wall 101 is completely attached to the lower surface of the forming surface of the first annular support assembly 3; and (4) moving out the first spinning roller device 5, and removing the first pressing component 4. The stripper loose piece 301 is extended and removed from the central cavity of the outer annular groove so that the other parts of the first annular bracing assembly 3 are released from the outer annular groove. And disassembling the machined part and the residual structure, thereby finishing the machining of the outer annular groove of the part.
As shown in fig. 6 and 7, in this embodiment, the first annular support assembly 3 includes a plurality of assembling units, the mold release loose piece 301 and the assembling units are sequentially bonded and assembled without a gap to form an annular assembly, the upper surface of the annular assembly is used for bonding to the annular groove bottom plate 102 of the annular blank 1, and the molding surface of the annular assembly is used for bonding to the annular outer vertical groove wall 101 of the annular blank 1. The assembling unit includes a first unit piece 302 attached to the mold release loose piece 301 and a second unit piece 303 both sides of which are not attached to the mold release loose piece 301. The attaching surfaces of the two sides of the second unit piece 303 are arranged along the radial direction of the annular assembly, the attaching surfaces of the two sides of the demoulding loose piece 301 are a group of parallel surfaces which are parallel to each other, and the first unit piece 302 is provided with a first attaching surface matched with the attaching surface of the demoulding loose piece 301 and a second attaching surface matched with the attaching surface of the second unit piece 303. Alternatively, the horizontal sectional shape of the second unit piece 303 is a sector. Alternatively, the two parallel abutting surfaces of the mold release movable block 301 may be a vertically arranged plane or an inclined plane. Alternatively, the two parallel abutting surfaces of the release block 301 may be arranged in any direction and the release block 301 may be released in the horizontal direction without being obstructed. The plurality of second unit pieces 303 are attached to each other to form a ring with a gap, the demolding loose piece 301 is filled in the gap to form a closed ring, adjacent two second unit pieces 303 are hindered by radial attaching surfaces and cannot be separated, and only the demolding loose piece 301 can be separated along the radial direction, so that the structural stability after assembly and combination is ensured. Optionally, a limiting member is disposed at the releasing position of the demoulding loose piece 301 to prevent the demoulding loose piece 301 from being released in the radial direction during the processing; and after the processing is finished, the demoulding loose piece 301 is removed by removing the limiting piece so as to remove the whole first annular support assembly 3. Optionally, the limiting part is a limiting bolt, a limiting stop, a limiting bolt, a limiting buckle, or the like.
As shown in FIGS. 5, 6 and 7, in the present embodiment, the upper end surface of the first annular support assembly 3 extends outwards along the horizontal direction to form an annular forming surface for roll forming the outer annular groove by the annular outer vertical groove wall 101 of the annular blank 1, the inner wall surface of the first annular support assembly 3 is a conical surface with a radial size larger than the upper end, the first bottom support assembly 2 comprises a first annular inclined block 201 which is arranged in the ring of the first annular support assembly 3 and used for matching with the conical surface of the first annular support assembly 3 and pressing the first annular support assembly 3 from the inside of the first annular support assembly 3, and a first annular stop block 202 which is arranged at the periphery of the first annular support assembly 3 and used for limiting the first annular support assembly 3 from the outside of the first annular support assembly 3, optionally, each assembly unit is provided with a forming surface unit, the annular forming surface is formed by the combination of the assembly units, the annular inclined surface units are uniformly attached to the outer annular forming surface of the assembly by the first annular inclined surface forming unit, and the annular inclined surface units are arranged to form an annular inclined surface 35202 which is matched with the inner side surface of the first annular inclined surface of the assembly 3 along the annular inclined surface, so as to ensure that the annular inclined surface of the assembly 3 and the annular inclined surface of the assembly modules is matched with the first annular inclined surface of the assembly 3, and the annular stop block 202, so that the annular inclined surface of the assembly 3, the assembly is formed by the annular inclined surface of the assembly 3, and the annular inclined surface units, and the annular inclined surface of the assembly is formed by the annular inclined surface units, so that the annular inclined surface units, the annular inclined surface of the assembly 3, the annular inclined surface units, the annular inclined surface of the assembly 3, the annular inclined surface units, the annular inclined surface of the annular inclined surface units, the assembly 3, the assembly is formed by the annular inclined surface units, the annular inclined surface.
In this embodiment, the first bottom supporting assembly 2 includes a first bottom plate for being assembled and fixed on the machine tool table, a first positioning bushing at the bottom of the first bottom plate for positioning the first bottom plate and the machine tool table relatively, a first annular stopper 202 at the upper portion of the first bottom plate for carrying the first annular supporting assembly 3 and limiting the first annular supporting assembly 3 from the outside of the first annular supporting assembly 3, and a first annular inclined block 201 on the first annular stopper 202 and in the inner cavity of the first annular supporting assembly 3 for pressing the first annular supporting assembly 3 from the inner cavity of the first annular supporting assembly 3, wherein the first annular inclined block 201 is in conical surface fit with the first annular supporting assembly 3. The first bottom support component 2 is correspondingly arranged at a corresponding position on the working table surface of the machine tool through the first positioning bushing so as to realize position alignment and positioning, thereby ensuring the assembly precision of subsequent processing equipment and the processing precision of a subsequent outer side annular groove. The outer side wall of the first annular supporting component 3 is limited through the first annular stop block 202, the outer side wall of the first annular supporting component 3 is limited through the first annular inclined block 201, the conical surface matching relation of the first annular inclined block 201 and the first annular supporting component 3 is limited through the first annular inclined block 201, and the first annular inclined block 201 and the first annular supporting component 3 is combined with the first pressing action force of the pressing component 4, so that the first annular supporting component 3 is pressed between the first annular inclined block 201 and the first annular stop block 202, and each assembling unit of the first annular supporting component 3 keeps the inner surface and the outer surface of the assembling unit continuous and uniform, the structural stability during machining is ensured, and the structural precision of the outer annular groove forming is ensured.
In this embodiment, at least one of the first bottom plate and the table top of the machine tool, the first positioning bushing and the first bottom plate, the first bottom plate and the first annular stopper 202, the first annular stopper 202 and the first annular sloping block 201, or the first bottom plate, the first annular stopper 202 and the first annular sloping block 201 is fixed by a fastening connector. The fastening connecting piece adopts connecting pieces of various different types or various different structures for connection so as to realize axial locking and positioning, radial locking and positioning and circumferential locking and positioning at the same time. The overall accuracy of the assembled processing equipment and the position relation progress of each connecting part are ensured, and therefore the processing accuracy of the outer annular groove is improved.
In this embodiment, the first pressing assembly 4 includes a first pressing ring for uniformly pressing the ring blank 1, and a first centering locking member located on a first pressing ring central axis and used for centering and assembling the first bottom support assembly 2, the first annular support assembly 3, and the first pressing assembly 4, and the first pressing ring is locked to the first bottom support assembly 2 by the first centering locking member to press the ring blank 1 by the first pressing ring. When vertical locking is exerted to whole processing equipment to the retaining piece in first pair, ensure locking centering each other, ensure that first end supporting component 2, ring blank 1, first annular prop shape subassembly 3, first compress tightly the subassembly 4 four coaxial to improve outside annular groove's machining precision. Optionally, the first centering lock is in a taper fit with the first bottom support assembly 2 and/or the first hold down assembly 4 to ensure that the first bottom support assembly 2 is coaxially concentric with the first hold down assembly 4, while the annular blank 1 and the first annular brace assembly 3 are also coaxially concentric with the first bottom support assembly 2 and the first hold down assembly 4 by vertical pressure between the first bottom support assembly 2 and the first hold down assembly 4.
In this embodiment, the first spinning roller device 5 includes a first mounting rod assembled on the driving head of the machine tool, a first cover plate installed at the overhanging end of the first mounting rod and used for cooperating with the first mounting rod to form a mounting space, a first bearing located in the mounting space, and a first roller installed on the first bearing and extending outward toward the first cover plate and used for applying a rolling force to the annular outer vertical groove wall 101 of the annular blank 1, and the first roller is rotatably connected to the combined structure of the first mounting rod and the first cover plate through the first bearing. The rolling operation surface of the first roller is matched with the first annular support assembly 3 and is used for rolling along the circumferential direction of the annular blank 1 and gradually applying pressure along the radial direction when the first roller is attached to the annular outer vertical groove wall 101. Optionally, the rolling portion of the first roller is arranged in parallel with the inclined surface of the annular forming surface. Optionally, the edge of the first roller contacting with the annular outer vertical groove wall 101 of the annular blank 1 is provided with an arc-shaped edge to avoid surface damage of the part caused by stress concentration during machining.
As shown in fig. 9, 10, 11 and 12, in the present embodiment, the device used for processing the inner annular groove is a device for processing the inner annular groove of the ring-shaped member. The processing equipment comprises a second bottom supporting assembly 6 used for supporting and positioning from the bottom, a second annular supporting assembly 7 fixed on the second bottom supporting assembly 6 and used for supporting and sleeving the second bottom in the groove of the annular blank 1 and forming an annular groove forming surface on the inner side of the annular blank 1, a second pressing assembly 8 located above the second annular supporting assembly 7 and used for pressing the annular groove bottom plate 102 of the annular blank 1 on the second annular supporting assembly 7, and a second spinning roller device 9 located in the inner cavity of the second annular supporting assembly 7 and used for rolling the annular inner vertical groove wall 103 of the annular blank 1 on the second annular supporting assembly 7 into an inner annular groove in a rolling mode. The second annular support assembly 7 is formed by attaching a plurality of fan-shaped movable blocks 701 along the circumferential direction without a gap, and the second annular support assembly 7 and the second bottom support assembly 6 are in conical surface fit. The whole processing equipment is aligned and positioned on the working table surface of the machine tool through the second bottom support assembly 6, so that the processing equipment and the driving end of the machine tool are ensured to form an accurate relative position relationship, and subsequent part processing is facilitated. The annular groove bottom plate 102 of the annular blank 1 is clamped up and down along the axial direction of the annular blank 1 through the second pressing component 8 and the second annular support component 7 so as to ensure the structural stability of the annular blank 1 during processing, meanwhile, the conical surface matching between the second bottom support component 6 and the second annular support component 7 is utilized so as to force each movable block 701 of the second annular support component 7 to be assembled in place, and the conical surface matching is utilized so as to generate a supporting force opposite to the rolling acting force direction of the second spinning roller device 9, so that the structural stability during the rolling processing is improved, and the processing precision of parts is ensured; the second annular support assembly 7 is used as an internal support piece when the annular inner vertical groove wall 103 of the annular blank 1 is subjected to roll forming; when the second spinning roller device 9 contacts the annular inner vertical groove wall 103, one rolling part of the second spinning roller device 9 rolls along the circumferential direction of the annular blank 1, and rolling pressure is applied along the radial direction of the annular blank 1 to force the annular inner vertical groove wall 103 to gradually attach to the forming surface of the second annular support assembly 7, so that the transformation from the annular inner vertical groove wall 103 to the inner annular groove is completed. After finishing processing, demolish the second and compress tightly subassembly 8, then prop shape subassembly 7 with the part that is processed and the second annular and deviate from wholly, prop each movable block 701 of shape subassembly 7 through propping the second annular and apply with radial outside effort to make the movable block 701 deviate from in the inboard annular groove of part, thereby make the second annular prop shape subassembly 7 dispersion and can deviate from easily, the part of the interior side annular groove of in-band after the convenience of processing can be easily followed and is carried out unhindered taking out on the processing equipment, can not cause any injury to the part, thereby guarantee the integrality of the part after the processing. In the assembling process of the processing equipment, the second pressing component 8, the annular blank 1, the second annular support component 7 and the second bottom support component 6 can be centered through the second pressing component 8, so that the subsequent processing precision is ensured. The processing equipment has simple structure and convenient demoulding, eliminates the obstruction to the demoulding of the parts and ensures that the processed parts can be taken out without damage. The die is suitable for processing and demoulding the inner side annular groove of various annular parts. When the annular inner vertical groove wall 103 is rolled on the second annular support assembly 7 to form an inner annular groove, an operation space for demoulding is reserved between the back surface of the second annular support assembly 7 and the formed part.
As shown in fig. 9, 10, 11, 12 and 13, in the present embodiment, the specific processing steps of the inner annular groove are as follows: and a second bottom support component 6 and a second annular support component 7 are sequentially assembled on the working table surface of the machine tool, and the second bottom support component 6 is used for positioning, aligning and locking on the working table surface of the machine tool. The notch of the circular ring blank 1 is buckled on the second annular support assembly 7, so that the bottom plate 102 of the circular ring blank 1 is attached to the upper surface of the second annular support assembly 7, and the circular inner vertical groove wall 103 of the circular ring blank 1 is in contact with the support surface of the second annular support assembly 7. And then assembling a second pressing component 8, and applying a vertical pressing force by using the second pressing component 8 to force the second annular support-shaped component 7 to be assembled in place under the action of the conical surface fit and form a supporting force opposite to the rolling force of the second spinning roller device 9. The second spinning roller device 9 is driven by the machine tool to extend into the operating hole of the second pressing component 8 and descend to a preset position, and the rolling operation surface is controlled to be close to the annular inner vertical groove wall 103 of the annular blank 1 along the radial direction of the annular blank 1. When the rolling operation surface is attached to the annular inner vertical groove wall 103, the rolling operation surface rolls along the circumferential direction of the annular blank 1 and gradually applies pressure in the radial direction until the annular inner vertical groove wall 103 is completely attached to the lower surface of the forming surface of the second annular support assembly 7. And (4) moving out the second spinning roller device 9, and removing the second pressing component 8. And taking out the processed part and the second annular support assembly 7 from the second bottom support assembly 6 at the same time, and applying a radially outward pulling acting force to each movable block 701 of the second annular support assembly 7 respectively to enable the movable blocks 701 to be loosened and separated from the inner annular groove, so that the inner annular groove of the part is processed.
As shown in fig. 10, 11, and 12, in the present embodiment, the movable blocks 701 have the same outer shape and size. The uniform manufacturing of the structure is ensured, the manufacturing accuracy of the movable blocks 701 can be ensured, and the fitting accuracy between the movable blocks 701 can also be ensured. The machining precision and the die removal difficulty can be controlled by increasing the number of the movable blocks 701. The more the number of the movable blocks 701 required for looping is, the more convenient the mold removal is, but the processing precision is reduced along with the movable blocks; the smaller the number of the movable blocks 701 required for the ring formation, the greater the difficulty of mold removal, but the higher the processing accuracy. The movable block 701 comprises an inner arc surface radially attached to the second bottom support assembly 6 and an outer arc surface radially attached to the second bottom support assembly 6, the inner arc surface is arranged in the vertical direction, and the upper end of the outer arc surface inclines outwards in the radial direction to form a conical arc surface. The conical cambered surface is matched with the conical surface of the second bottom support assembly 6 to force the inner cambered surface to be tightly attached to the second bottom support assembly 6 along the radial direction, so that all the movable blocks 701 are ensured to be assembled in place and form radial support when the second spinning roller device 9 is processed. Optionally, the abutting surfaces between two adjacent movable blocks 701 are arranged along the radial direction of the second annular support assembly 7, so as to ensure the structural uniformity. When the second spinning roller device 9 applies force to the annular inner vertical groove wall 103 of the annular blank 1 in a rolling manner, the decomposed acting force of the rolling acting force along the circumferential direction is transmitted to the second annular support assembly 7 to force the movable blocks 701 to be pressed against each other and tend to reach the assembly position, so that the machining precision is ensured, and the decomposed acting force of the rolling acting force along the radial direction is counteracted by the combined acting force of the conical surface fit between the second annular support assembly 7 and the second bottom support assembly 6 and the downward pressure of the second pressing assembly 8, so that the structural stability during machining is ensured.
As shown in fig. 10, 11 and 12, in the present embodiment, the upper portion of the outer arc surface of the movable block 701 extends radially outward to form an outer support platform 7011 for assisting in supporting the second pressing member 8 and ensuring the balance of the support, the upper end of the inner arc surface of the movable block 701 extends radially inward to form a forming convex ring 7012 for supporting the annular bottom plate 102 of the annular blank 1 from the bottom and contacting the annular inner vertical groove wall 103 to form an inner annular groove roll forming surface, the outer support platform 7011 supports the second pressing member 8 together with the forming convex ring 7012 of the annular blank 1 with the upper surface to ensure that the downward pressure applied by the second pressing member 8 is uniformly and stably transmitted to the annular bottom plate 102 of the component, thereby avoiding the shearing force damage to the annular bottom plate 102, the forming of the inner annular groove support by the forming convex ring 7012, the inner vertical groove wall 103 roll forming the inner support shape can form a sufficient roll operating space to reduce the structural obstruction during the process, the lower surface of the forming convex ring 7012 is set to be an overhanging inclined surface, the inclined surface of the outer support platform 708, the outer support platform is set to form an inclined surface, and contact with the upper surface of the outer support platform 708, and the upper support component to ensure that the upper surface of the outer support ring blank is optionally lower support component when the lower support 708, the lower surface of the lower support platform is pressed by the lower surface of the forming convex ring 708, the lower support component, the outer support platform 708, the lower surface of the lower support component is set to form an angle of the lower support component, the lower surface of the lower support component, the lower support platform 708, the lower surface of the upper support component, the lower surface of the lower support component, the upper support component is set to contact with the lower support component, and the upper support component, the outer support component, the upper support component, and the upper support component, the upper support component is set to form an inner support component, and the lower surface of the upper support.
In this embodiment, the outer supporting platform 7011 is provided with a force application structure for the movable block 701 to apply force in the radial direction to disengage. The acting force is conveniently applied to the movable block 701 after the machining is finished, so that the movable block 701 can be rapidly separated from the inner side annular groove. Alternatively, the force application structure may employ a force application fitting hole, a force application handle, a force application abutment projection, a force application bail, or the like.
In this embodiment, the second bottom supporting assembly 6 includes a second bottom plate for being assembled and fixed on the machine tool table, a second positioning bushing located at the bottom of the second bottom plate for positioning the second bottom plate and the machine tool table, a second annular inclined block located outside the second annular supporting assembly 7 and used for matching with the conical surface of the second annular supporting assembly 7 and compressing the second annular supporting assembly 7 from the outside of the second annular supporting assembly 7, and a second annular stopper located inside the second annular supporting assembly 7 and used for limiting the second annular supporting assembly 7 from the inside of the second annular supporting assembly 7. The second annular inclined block and the second annular stop block are coaxially arranged and fixed on the second bottom plate. The second bottom support assembly 6 correspondingly loads the second positioning bushing to a corresponding position on the working table of the machine tool so as to realize position alignment and positioning, thereby ensuring the assembly precision of subsequent processing equipment and the processing precision of a subsequent inner side annular groove. The inner side wall of the second annular support assembly 7 is limited by the second annular stop block, the outer side wall of the second annular support assembly 7 is limited by the second annular inclined block, the conical surface matching relation between the second annular inclined block and the second annular support assembly 7 is also limited by the second annular inclined block, and the second annular inclined block and the second annular support assembly 7 are combined with the pressing action force of the second pressing assembly 8, so that the second annular support assembly 7 is pressed between the second annular inclined block and the second annular stop block, each movable block 701 of the second annular support assembly 7 is forced to automatically move in place and the inner surface and the outer surface of the second annular support assembly are kept continuous and uniform, the structural stability during processing is ensured, and the structural precision of.
In this embodiment, the second pressing assembly 8 includes a second pressing ring for uniformly pressing the annular blank 1 and a second pressing plate fixed to the second bottom supporting assembly 6 for pressing the second pressing ring from above the second pressing ring. The middle part of the second pressing ring is provided with an operation hole for the second spinning roller device 9 to stretch into and roll-press the annular blank 1, and the second pressing plate surrounds the outer side of the second pressing ring to the upper part of the second pressing ring and applies vertical pressure to the second pressing ring. Even have the vertical regulating part that lays near the second clamping ring and keep away from the bottom support piece that the second clamping ring laid on the second clamp plate, hang the limit through bottom support piece to the outside of second clamp plate and support, vertical regulation through vertical regulating part is in order to adjust the second clamp plate and exert the vertical pressure to the second clamping ring. Second clamp plate, vertical regulating part and bottom support piece three constitute simple and easy lever assembly, and the convenience is to the regulation of the overdraft of applying to the second clamping ring along vertical, avoids producing too much overdraft and lead to the material extension deformation to ring blank 1 when guaranteeing ring blank 1 to add stable in structure man-hour. Optionally, the simple lever assembly is provided with a plurality of groups, and the simple lever assemblies are uniformly distributed along the circumferential direction of the second pressing ring. So as to ensure that the second pressing ring applies force to the circular ring blank 1 uniformly and avoid generating eccentric force damage to the circular ring blank 1.
As shown in fig. 1, in this embodiment, the second spinning roller device 9 includes a second mounting rod mounted on the driving head of the machine tool, a second cover plate mounted on the overhanging end of the second mounting rod for cooperating with the second mounting rod to form a mounting space, a second bearing located in the mounting space, and a second roller mounted on the second bearing and extending outward from the second cover plate for extending into the operating hole of the second pressing component 8 to apply a rolling force to the annular inner vertical groove wall 103 of the annular blank 1, and the second roller is rotatably connected to the combined structure of the second mounting rod and the second cover plate through the second bearing. The rolling operation part of the second roller is matched with the second annular support assembly 7 and is used for rolling along the circumferential direction of the annular blank 1 and gradually pressing along the radial direction when the second roller is attached to the annular inner vertical groove wall 103. Alternatively, the rolling part of the second roller is arranged in parallel with the inclined surface at the lower part of the forming surface of the second annular support assembly 7. Optionally, the edge of the second roller contacting with the annular inner vertical groove wall 103 of the annular blank 1 is provided with an arc-shaped edge to avoid surface damage of the part caused by stress concentration during machining.
In this embodiment, the annular blank 1 is manufactured by stamping, cutting, pouring, forging or melting according to design requirements. Firstly, processing an annular outer vertical groove wall 101 of the annular blank 1, and then processing an annular inner vertical groove wall 103; or the annular inner vertical groove wall 103 of the annular blank 1 is machined first, and then the annular outer vertical groove wall 101 is machined.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A method for forming a high-temperature alloy thin-wall annular closed groove is characterized in that a high-temperature alloy thin-wall annular closed groove part of an aircraft engine is annular, the outer edge and the inner edge of the part are relatively curled to form an annular inward-curling groove,
the method is characterized by comprising the following steps:
processing and obtaining a circular ring blank (1) with a right-angle groove-shaped cross section, wherein the circular ring blank (1) is provided with an annular outer vertical groove wall (101), an annular groove bottom plate (102) and an annular inner vertical groove wall (103);
clamping and fixing the bottom plate (102) of the annular groove, and arranging the notch of the annular blank (1) downwards;
carrying out in-groove support on the annular outer vertical groove wall (101), and processing the annular outer vertical groove wall (101) in a rolling manner to enable the annular outer vertical groove wall (101) to be processed into an outer annular groove;
the groove inner support type of the annular outer vertical groove wall (101) adopts a split structure, and the outer annular grooves are respectively disassembled and demoulded after being processed;
carrying out in-groove support on the annular inner vertical groove wall (103), and processing the annular inner vertical groove wall (103) in a rolling manner to enable the annular inner vertical groove wall (103) to be processed into an inner annular groove;
an in-groove support structure of the annular inner vertical groove wall (103) adopts a split structure, and the disassembly and the demolding are respectively carried out after the inner annular groove is processed; removing the processed parts to obtain a high-temperature alloy thin-wall annular closed groove;
the equipment adopted for processing the outer annular groove is processing equipment for the outer annular groove of the annular piece;
the processing equipment comprises a first bottom support component (2) used for supporting and positioning from the bottom, and a first annular support component (3) fixed on the first bottom support component (2) and used for supporting and sleeving in a groove of the annular blank (1) from the bottom and forming an annular groove forming surface on the outer side of the annular blank (1), a first pressing component (4) which is arranged above the first annular supporting component (3) and is used for pressing the annular groove bottom plate (102) of the annular blank (1) on the first annular supporting component (3), and a first spinning roller device (5) which is arranged on the periphery of the first annular supporting component (3) and is used for rolling the annular outer vertical groove wall (101) of the annular blank (1) on the first annular supporting component (3) into an outer annular groove in a rolling manner;
the first annular supporting assembly (3) is provided with a demolding loose piece (301) which is used for radially releasing the annular blank (1) after the outer annular groove of the annular blank (1) is formed in a rolling mode.
2. The method for forming a thin-walled closed superalloy groove as in claim 1,
the specific processing steps of the outer annular groove are as follows:
the first bottom support component (2) and the first annular support component (3) are sequentially assembled on the working table of the machine tool, and the first bottom support component (2) is used for positioning, aligning and locking on the working table of the machine tool;
buckling the notch of the circular ring blank (1) on the first annular support assembly (3) so that the annular groove bottom plate (102) of the circular ring blank (1) is attached to the upper surface of the first annular support assembly (3) and the annular outer vertical groove wall (101) of the circular ring blank (1) is in contact with the support surface of the first annular support assembly (3);
then assembling the first pressing assembly (4), and utilizing the first pressing assembly (4) to perform coaxial centering and axial pressing on the first pressing assembly (4), the circular ring blank (1), the first annular supporting assembly (3) and the first bottom supporting assembly (2), and meanwhile forcing the first annular supporting assembly (3) to be assembled in place and forming a supporting force opposite to the rolling force of the first spinning roller device (5);
driving the first spinning roller device (5) to be close to the annular outer vertical groove wall (101) of the circular ring blank (1) along the radial direction of the circular ring blank (1) through a machine tool;
when the annular outer vertical groove wall (101) is attached, the annular outer vertical groove wall rolls along the circumferential direction of the circular ring blank (1) and gradually exerts pressure along the radial direction until the annular outer vertical groove wall (101) is completely attached to the lower surface of the forming surface of the first annular support assembly (3);
removing the first spinning roller device (5) and detaching the first pressing component (4);
the demoulding loose piece (301) is extended into and removed from the middle cavity of the outer annular groove, so that other parts of the first annular support assembly (3) are removed from the outer annular groove;
and disassembling the machined part and the residual structure, thereby finishing the machining of the outer annular groove of the part.
3. The method for forming a thin-walled closed superalloy groove as in claim 1,
the first annular support assembly (3) comprises a plurality of assembling units, the demolding movable block (301) and the assembling units are sequentially attached and assembled in a gapless mode to form an annular assembly, the upper surface of the annular assembly is used for being attached to the annular groove bottom plate (102) of the annular blank (1), and the forming surface of the annular assembly is used for being attached to the annular outer vertical groove wall (101) of the annular blank (1);
the assembling unit comprises a first unit piece (302) attached to the demolding loose piece (301) and a second unit piece (303) of which two sides are not attached to the demolding loose piece (301);
the binding surfaces of both sides of the second unit piece (303) are arranged along the radial direction of the annular assembly, the binding surfaces of both sides of the demolding movable block (301) are a group of parallel surfaces which are parallel to each other, and the first unit piece (302) is provided with a first binding surface matched with the binding surface of the demolding movable block (301) and a second binding surface matched with the binding surface of the second unit piece (303).
4. The method for forming a thin-walled closed superalloy groove of claim 3,
the upper end surface of the first annular support component (3) extends outwards along the horizontal direction to form an annular forming surface for roll forming an outer annular groove on the outer vertical groove wall (101) of the annular blank piece (1), and the inner wall surface of the first annular support component (3) is a conical surface with a radial size being large at the bottom and small at the top;
the first bottom supporting assembly (2) comprises a first annular inclined block (201) which is arranged in the ring of the first annular supporting assembly (3) and used for being matched with the conical surface of the first annular supporting assembly (3) and pressing the first annular supporting assembly (3) from the inside of the first annular supporting assembly (3), and a first annular stop block (202) which is arranged on the periphery of the first annular supporting assembly (3) and used for limiting the first annular supporting assembly (3) from the outside of the first annular supporting assembly (3);
the lower surface of the annular forming surface is provided with an inclined surface with the inner side inclined upwards, and the inclined surface and the horizontal plane form an included angle α used for offsetting the elastic rebound of the outer annular groove after rolling forming.
5. The method for forming a thin-walled closed superalloy groove as in claim 1,
the equipment adopted for processing the inner annular groove is processing equipment of the inner annular groove of the annular piece;
the processing equipment comprises a second bottom support assembly (6) used for supporting and positioning from the bottom, and a second annular support assembly (7) fixed on the second bottom support assembly (6) and used for supporting and sleeving the second bottom in the groove of the annular blank (1) and forming an annular groove forming surface on the inner side of the annular blank (1), a second pressing component (8) which is arranged above the second annular support component (7) and is used for pressing the annular groove bottom plate (102) part of the annular blank (1) on the second annular support component (7), and a second spinning roller device (9) which is arranged in the inner cavity of the second annular support component (7) and is used for rolling the annular inner vertical groove wall (103) of the annular blank (1) into an inner annular groove on the second annular support component (7) in a rolling manner;
the second annular support assembly (7) is formed by attaching a plurality of fan-shaped movable blocks (701) in a gapless mode along the circumferential direction, and the second annular support assembly (7) and the second bottom support assembly (6) are matched through a conical surface.
6. The method for forming a thin-walled closed superalloy groove of claim 5,
the specific processing steps of the inner side annular groove are as follows:
the second bottom support assembly (6) and the second annular support assembly (7) are sequentially assembled on the working table of the machine tool, and the second bottom support assembly (6) is used for positioning, aligning and locking on the working table of the machine tool;
buckling the notch of the circular ring blank (1) on the second annular support assembly (7) so that the annular groove bottom plate (102) of the circular ring blank (1) is attached to the upper surface of the second annular support assembly (7) and the annular inner vertical groove wall (103) of the circular ring blank (1) is in contact with the support surface of the second annular support assembly (7);
then assembling the second pressing assembly (8), and applying a vertical pressing force by using the second pressing assembly (8) to force the second annular support-shaped assembly (7) to be assembled in place under the action of conical surface cooperation and form a supporting force opposite to the rolling force of the second spinning roller device (9);
the second spinning roller device (9) is driven by a machine tool to extend into an operation hole of the second pressing assembly (8) and descend to a preset position, and a rolling operation surface is controlled to be close to the annular inner vertical groove wall (103) of the annular blank (1) along the radial direction of the annular blank (1);
when the rolling operation surface is attached to the annular inner vertical groove wall (103), rolling along the circumferential direction of the circular ring blank (1) and gradually pressurizing along the radial direction until the annular inner vertical groove wall (103) is completely attached to the lower surface of the forming surface of the second annular support assembly (7);
removing the second spinning roller device (9) and detaching the second pressing component (8);
and taking out the processed part and the second annular support assembly (7) from the second bottom support assembly (6) at the same time, and respectively applying a radially outward pulling acting force to each movable block (701) of the second annular support assembly (7) so as to enable the movable blocks (701) to be loosened and separated from the inner annular groove, thereby finishing the processing of the inner annular groove of the part.
7. The method for forming a thin-walled closed superalloy groove of claim 6,
the movable blocks (701) are the same in shape and size;
the movable block (701) include with the intrados of support component (6) radial laminating and with the extrados of support component (6) radial laminating at the bottom of the second, the intrados is laid along vertical direction, and the upper end of extrados forms the circular cone cambered surface along radially outwards inclining, through the circular cone cambered surface with the conical surface cooperation of support component (6) is followed radially hugging closely in order to force the intrados at the bottom of the second support component (6), in order to ensure all the movable block (701) all assembles and targets in place and constitutes the radial support that second spinning roller device (9) add man-hour.
8. The method for forming a thin-walled closed superalloy groove of claim 7,
the upper part of the extrados of the movable block (701) extends outwards along the radial direction to form an outer supporting platform (7011) which is used for assisting in supporting the second pressing component (8) and ensuring the supporting balance, and the upper end of the intrados of the movable block (701) extends inwards along the radial direction to form a forming convex ring (7012) which is used for supporting the bottom of the annular groove bottom plate (102) of the annular blank piece (1) from the bottom and is in contact with the annular inner vertical groove wall (103) to form an inner annular groove roll forming surface;
the lower surface of the molding convex ring (7012) is provided with an inclined surface with an overhanging side inclined downwards, and the inclined surface and the horizontal plane form an included angle α used for offsetting elastic rebound after the rolling molding of the inner annular groove;
the vertical height of the outer supporting platform (7011) is lower than that of the forming convex ring (7012), and the outer supporting platform (7011) and the forming convex ring (7012) form a stepped structure with a high inner part and a low outer part;
the inner side bottom surface of the second pressing component (8) presses the annular groove bottom plate (102) of the annular ring blank (1) onto the upper surface of the forming convex ring (7012), and the outer side bottom surface of the second pressing component (8) is supported on the outer supporting platform (7011) to form limiting when the second pressing component (8) is pressed downwards.
9. The method for forming a thin-walled closed superalloy groove as in any of claims 1 to 8,
the circular ring blank (1) is manufactured by adopting a stamping, cutting, pouring, forging or smelting mode according to the design requirement;
firstly, processing the annular outer vertical groove wall (101) of the circular ring blank (1), and then processing the annular inner vertical groove wall (103); or
Firstly, the annular inner vertical groove wall (103) of the circular ring blank (1) is processed, and then the annular outer vertical groove wall (101) is processed.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856335A (en) * 1928-03-22 1932-05-03 American Can Co Sealing ring and method of making it
CN1535358A (en) * 2002-02-08 2004-10-06 株式会社丰田自动织机 Piston for compressor and method for mfg. the same
CN204710909U (en) * 2015-04-14 2015-10-21 浙江商业职业技术学院 Rotary miaow head edge-sealing mechanism
CN206405240U (en) * 2016-12-26 2017-08-15 江门市新会永华不锈钢制品有限公司 A kind of improved crimping machine
CN207887687U (en) * 2018-02-01 2018-09-21 上海天昊达化工包装有限公司 A kind of steel bung pre-roll machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1856335A (en) * 1928-03-22 1932-05-03 American Can Co Sealing ring and method of making it
CN1535358A (en) * 2002-02-08 2004-10-06 株式会社丰田自动织机 Piston for compressor and method for mfg. the same
CN204710909U (en) * 2015-04-14 2015-10-21 浙江商业职业技术学院 Rotary miaow head edge-sealing mechanism
CN206405240U (en) * 2016-12-26 2017-08-15 江门市新会永华不锈钢制品有限公司 A kind of improved crimping machine
CN207887687U (en) * 2018-02-01 2018-09-21 上海天昊达化工包装有限公司 A kind of steel bung pre-roll machine

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