CN113477820A - Annular part thermal expansion correction tool and correction method - Google Patents
Annular part thermal expansion correction tool and correction method Download PDFInfo
- Publication number
- CN113477820A CN113477820A CN202110866322.4A CN202110866322A CN113477820A CN 113477820 A CN113477820 A CN 113477820A CN 202110866322 A CN202110866322 A CN 202110866322A CN 113477820 A CN113477820 A CN 113477820A
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- Prior art keywords
- thermal expansion
- cover plate
- annular part
- ring
- annular
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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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
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
The invention discloses a thermal expansion correction tool and a thermal expansion correction method for an annular part, and the thermal expansion correction tool comprises a circular ring (1) and a tension cover plate (5), wherein an adjusting screw (2) is radially arranged on the circular ring (1), the tension cover plate (5) is of a disc structure with a convex cross section, and the thermal expansion coefficient of the tension cover plate (5) is greater than that of the annular part to be corrected. The circular ring (1) is arranged on the bottom plate, the positioning column (3) is arranged in the center of the bottom plate, and the tensioning cover plate (5) is provided with a positioning hole matched with the positioning column (3). The method comprises the steps of firstly pressing the long shaft of a part to be short and changing the short shaft to be long in an external extrusion mode to enable the part to be round, then placing a thermal expansion type cover plate component at the inner diameter of the part, and thermally expanding the part from the inner diameter of a rectifier by using a circular component with a large expansion coefficient by utilizing the principle that different metal materials have different expansion coefficients in the heating process, thereby achieving the purpose of correcting the part.
Description
Technical Field
The invention relates to a structure and a method for correcting deformation of an annular part.
Background
The rectifier is formed by connecting an outer ring and blades into a whole through a brazing technology and then machining the whole to the size of a final part. In the brazing process, because the temperature is very high, the part is very easy to deform, and the deformation degree of the part can meet the requirement of subsequent machining by a correction method. The current correction method is mainly carried out by extruding the part from the outer side of the part, pressing the long shaft of the part to be short, lengthening the short shaft of the part, then charging the part into a furnace and carrying out heat treatment. The deformation degree of the parts after each brazing is different, so the degree of pressing the long shaft to be short is different when each correction is carried out, the correction method has higher requirements on the operation experience of operators, and has the defects of more correction times, lower production efficiency and the like.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems of high difficulty and high efficiency in the correction of the annular part, the tool and the method for correcting by utilizing the thermal expansion are provided.
The technical scheme of the invention is as follows:
the utility model provides an annular part thermal expansion corrects frock, includes ring 1 and tight apron 5 that rises, and the radial installation adjusting screw 2 of ring 1 rises, and the tight apron 5 that rises is the disc structure that the cross section is the type of protruding, and the thermal expansion coefficient of the tight apron 5 that rises is greater than the annular part of treating the correction.
The circular ring 1 is arranged on the bottom plate, the positioning column 3 is arranged in the center of the bottom plate, and the tensioning cover plate 5 is provided with a positioning hole matched with the positioning column 3.
The upper section of the positioning column 3 is provided with a wedge-shaped hole, the upper section of the positioning column 3 and the tensioning cover plate 5 are exposed after being matched, and the compression inclined block 4 is inserted into the wedge-shaped hole.
The circular ring 1 and the bottom plate are of an integrated structure, and the four adjusting screws 2 are uniformly distributed on the circular ring 1.
The annular part to be processed is placed in the center of the bottom plate, the adjusting screw 2 of the ring 1 props against the outer circumference of the annular part, and the protruding part of the tensioning cover plate 5 is matched with the inner circumference of the annular part.
The end of the adjusting screw 2 is provided with a correction plate 21.
Firstly, an annular part to be corrected is placed in a circular ring 1, a long shaft of the annular part is extruded by using adjusting screws 2 radially arranged on the circumference of the circular ring 1 to support the annular part into a circle, then a disc structure of a convex part of a tensioning cover plate 5 is placed in an inner ring of the annular part, and finally the tensioning cover plate 5 and the annular part are compressed and charged into a furnace for heat treatment.
Furthermore, a positioning ring 6 is arranged on the bottom plate, the annular part is placed outside the positioning ring 6, a gap is reserved between the outer circumference of the positioning ring 6 and the inner circumference of the annular part, and the tensioning cover plate 5 and the annular part are compressed by inserting the compression inclined block 4 into the wedge-shaped hole.
The ring 1 and the bottom plate are of a split structure, and the adjusting screw 2 is loosened to take out the ring 1 after the tensioning cover plate 5 is pressed.
In another scheme, the circular ring 1 and the bottom plate are of an integrally formed structure.
The invention has the beneficial effects that:
the method comprises the steps of firstly pressing the long shaft of a part to be short and changing the short shaft to be long in an external extrusion mode to enable the part to be round, then placing a thermal expansion type cover plate component at the inner diameter of the part, and thermally expanding the part from the inner diameter of a rectifier by using a circular component with a large expansion coefficient by utilizing the principle that different metal materials have different expansion coefficients in the heating process, thereby achieving the purpose of correcting the part. The method is simple and convenient to operate, has low requirements on the operation experience of an operator, and has uniform expansion of parts and good correction effect.
Drawings
Fig. 1 is a schematic structural view of the matching of the ring and the part in embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a tool and a part after matching in embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of the matching of the ring and the part in embodiment 2 of the invention.
Fig. 4 is a schematic structural diagram of a tool and a part after matching in embodiment 3 of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1: as shown in fig. 1 and 2, the calibration fixture of the embodiment is composed of a bottom plate, a circular ring 1 and a tensioning cover plate 5, wherein the circular ring 1 and the bottom plate are of an integrally formed structure, the bottom plate is also circular, four adjusting screws 2 are mounted on the circumference of the circular ring 1, and the adjusting screws 2 can feed along threaded holes radially arranged on the wall surface of the circular ring 1. The tensioning cover plate 5 is in a convex double-step disc structure, the diameter of a large disc on the upper layer of the tensioning cover plate 5 is larger than the outer diameter of the annular part to be corrected, and the diameter of a small disc on the lower layer of the tensioning cover plate 5 is equal to the inner diameter of the annular part. The thermal expansion coefficient of the tension cover plate 5 is larger than that of the annular part. The center of the bottom plate is also provided with a vertical positioning column 3, and a positioning hole matched with the positioning column 3 is formed in the tensioning cover plate 5. The upper section of the positioning column 3 is provided with a wedge-shaped hole, the upper section of the positioning column 3 and the tensioning cover plate 5 are exposed after being matched, and the compression inclined block 4 can be inserted into the wedge-shaped hole.
Further, a retainer ring 6 may be provided on the base plate, and the outer diameter of the retainer ring 6 is set to be small in order to allow the ring-shaped member to be placed outside the retainer ring 6.
Firstly, an annular part to be corrected is placed in a circular ring 1, a long shaft of the deformed annular part is aligned to two adjusting screws 2 as much as possible, then the annular part is extruded by the adjusting screws 2 to be rounded until a disc structure of a protruding part of a tensioning cover plate 5 can be placed in the annular part, after the tensioning cover plate 5 is placed in the annular part, a pressing inclined block 4 is inserted into a wedge-shaped hole to press the tensioning cover plate 5, finally, the annular part is loaded in a furnace, and the part is subjected to shape correction heat treatment according to a positive process curve.
Example 2: referring to fig. 3, the present embodiment is different from the embodiment in that the end of the adjusting screw 2 is provided with a correction plate 21, and the correction plate 21 can increase the contact area with the annular part to be corrected and can also play a certain role in correction.
Example 3: this implementation is on embodiment 2's basis, sets up bottom plate and ring 1 into split type structure, fixes ring 1 on the bottom plate before the installation waits to rectify the annular part, and the adjusting screw 2 is loosened after waiting to rise the tight apron 5 and compress tightly the annular part, takes off ring 1 from the bottom plate. Therefore, the number of parts for heating in the furnace body can be reduced, the weight is reduced, the manufacturing cost of the tool can be reduced, one set of rings can be paired with a plurality of expanding cover plates 5, and the replaced rings 1 can be used for other tools.
And finally, charging the furnace, and performing shape correction heat treatment on the part according to a positive process curve.
Claims (10)
1. The utility model provides a frock is rectified to annular part thermal expansion which characterized in that: the device comprises a circular ring (1) and a tensioning cover plate (5), wherein an adjusting screw (2) is radially arranged on the circular ring (1), the tensioning cover plate (5) is of a disc structure with a convex cross section, and the thermal expansion coefficient of the tensioning cover plate (5) is larger than that of an annular part to be corrected.
2. The tooling for correcting thermal expansion of annular parts according to claim 1, characterized in that: the circular ring (1) is arranged on the bottom plate, the positioning column (3) is arranged in the center of the bottom plate, and the tensioning cover plate (5) is provided with a positioning hole matched with the positioning column (3).
3. The tooling for correcting thermal expansion of annular parts according to claim 2, characterized in that: the upper section of the positioning column (3) is provided with a wedge-shaped hole, the upper section of the positioning column (3) and the tensioning cover plate (5) are exposed after being matched, and the pressing inclined block (4) is inserted into the wedge-shaped hole.
4. The tooling for correcting thermal expansion of annular parts according to claim 2, characterized in that: the circular ring (1) and the bottom plate are of an integrated structure, and the four adjusting screws (2) are uniformly distributed on the circular ring (1).
5. The tooling for correcting thermal expansion of annular parts according to claim 2, characterized in that: the annular part to be processed is placed in the center of the bottom plate, the adjusting screw (2) of the ring (1) abuts against the outer circumference of the annular part, and the protruding part of the tensioning cover plate (5) is matched with the inner circumference of the annular part.
6. The tooling for correcting thermal expansion of annular parts according to claim 5, characterized in that: the end part of the adjusting screw (2) is provided with a correction plate (21).
7. A method for correcting thermal expansion of an annular part is characterized by comprising the following steps: firstly, an annular part to be corrected is placed in a circular ring (1), a long shaft of the annular part is extruded by using adjusting screws (2) radially arranged on the circumference of the circular ring (1) to support the annular part to be circular, then a disc structure of a convex part of a tensioning cover plate (5) is placed in an inner ring of the annular part, and finally the tensioning cover plate (5) and the annular part are compressed and charged in a furnace for heat treatment.
8. The method for correcting thermal expansion of a ring-shaped part according to claim 7, wherein: the correction tool of claim 3 is adopted to install the annular part to be corrected, the positioning ring (6) is arranged on the bottom plate, the annular part is placed outside the positioning ring (6), a gap is reserved between the outer circumference of the positioning ring (6) and the inner circumference of the annular part, and the pressing inclined block (4) is inserted into the wedge-shaped hole to press the tensioning cover plate (5) and the annular part.
9. The method for correcting thermal expansion of a ring-shaped part according to claim 8, wherein: the ring (1) and the bottom plate are of a split structure, and the adjusting screw (2) is loosened to take out the ring (1) after the tensioning cover plate (5) is pressed.
10. The method for correcting thermal expansion of a ring-shaped part according to claim 8, wherein: the circular ring (1) and the bottom plate are of an integrally formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110866322.4A CN113477820A (en) | 2021-07-29 | 2021-07-29 | Annular part thermal expansion correction tool and correction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110866322.4A CN113477820A (en) | 2021-07-29 | 2021-07-29 | Annular part thermal expansion correction tool and correction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113477820A true CN113477820A (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110866322.4A Pending CN113477820A (en) | 2021-07-29 | 2021-07-29 | Annular part thermal expansion correction tool and correction method |
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| CN (1) | CN113477820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134308A (en) * | 2021-11-26 | 2022-03-04 | 昌河飞机工业（集团）有限责任公司 | Tempering correction clamp and method for annular sheet part |
| CN114273468A (en) * | 2021-11-24 | 2022-04-05 | 中国航发南方工业有限公司 | Thermal sizing process for vacuum brazing part |
| CN115584452A (en) * | 2022-10-31 | 2023-01-10 | 山西江淮重工有限责任公司 | Anti-deformation and shape-correcting device for heat treatment of aluminum alloy casting and application |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114273468A (en) * | 2021-11-24 | 2022-04-05 | 中国航发南方工业有限公司 | Thermal sizing process for vacuum brazing part |
| CN114273468B (en) * | 2021-11-24 | 2024-03-12 | 中国航发南方工业有限公司 | Thermal correction process for vacuum brazing parts |
| CN114134308A (en) * | 2021-11-26 | 2022-03-04 | 昌河飞机工业（集团）有限责任公司 | Tempering correction clamp and method for annular sheet part |
| CN115584452A (en) * | 2022-10-31 | 2023-01-10 | 山西江淮重工有限责任公司 | Anti-deformation and shape-correcting device for heat treatment of aluminum alloy casting and application |
| CN115584452B (en) * | 2022-10-31 | 2024-03-15 | 山西江淮重工有限责任公司 | Anti-deformation and shape correcting device for heat treatment of aluminum alloy castings and application thereof |
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Application publication date: 20211008 |
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