CN111283612A - Device for mechanical extrusion type flaring - Google Patents
Device for mechanical extrusion type flaring Download PDFInfo
- Publication number
- CN111283612A CN111283612A CN202010245140.0A CN202010245140A CN111283612A CN 111283612 A CN111283612 A CN 111283612A CN 202010245140 A CN202010245140 A CN 202010245140A CN 111283612 A CN111283612 A CN 111283612A
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- section
- mounting hole
- transmission screw
- hole
- flaring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a device for mechanical extrusion type flaring, which comprises a clamp body, an interchangeable anvil, a hexagonal thread sleeve, a transmission screw and a shifting pin, wherein the clamp body is of an arch structure, the upper side wall of the opening end of the clamp body is provided with a first mounting hole, and the axis of the first mounting hole is mutually vertical to the axis of the upper side wall of the clamp body; a transmission screw is assembled in the first mounting hole; one end of the transmission screw is provided with a shifting pin, the other end of the transmission screw is provided with a replaceable anvil, the free end of the replaceable anvil is a working part, the working part is of a cone structure, and the taper of the cone structure is matched with the taper of a combustion chamber casing taper hole; the invention ensures that the bypass bleed air pipe mounting seat is uniformly stressed and is not damaged when in flaring, and the bypass bleed air pipe mounting seat is quickly and efficiently deformed; the flaring problem of the mounting seat, the supporting plate self-locking nut, the bushing and the like which need to be assembled in the multi-model combustion chamber casing assembly is solved.
Description
Technical Field
The invention belongs to the technology of riveting and assembling of engine components, and relates to a device for mechanical extrusion type flaring.
Background
When a certain engine is assembled, the flaring of the bypass bleed air pipe mounting seat needs to be riveted on the combustion chamber casing. And (3) ensuring that the end face of the flaring is not allowed to exceed the front wall surface, and checking that the riveted part has no crack by using a 10-time magnifying lens after flaring.
When the existing device is used for flaring, the existing device is placed on a bench, a special support is used for supporting a casing and a supporting plate nut to be flared, then a special punch is placed on a reaming nut, and a hammer is used for knocking the special punch to deform the special punch into a required shape.
However, the method is seemingly simple, but is easy to cause uncontrollable stress, so that the flaring part is damaged and cracks appear, or the situation that the attachment is not good and the supporting plate nut is loosened is caused.
Disclosure of Invention
The invention aims to provide a device for mechanical extrusion type flaring, which overcomes the defects of uneven stress and damage of the flaring of the conventional device.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a device for mechanical extrusion type flaring, which comprises a clamp body, an interchangeable anvil, a hexagonal thread sleeve, a transmission screw and a shifting pin, wherein the clamp body is of an arch structure, the upper side wall of the opening end of the clamp body is provided with a first mounting hole, and the axis of the first mounting hole is mutually vertical to the axis of the upper side wall of the clamp body; a transmission screw is assembled in the first mounting hole; the combustion chamber casing taper hole taper structure is characterized in that a shifting pin is installed at one end of the transmission screw, a replaceable anvil is installed at the other end of the transmission screw, the free end of the replaceable anvil is a working part, the working part is of a cone structure, and the taper of the cone structure is matched with the taper of the combustion chamber casing taper hole.
Preferably, a hexagonal thread bush is arranged between the first mounting hole and the drive screw.
Preferably, the hexagonal thread bush is of a three-step shaft structure and is respectively a first step shaft, a second step shaft and a third step shaft, and the diameters of the first step shaft, the second step shaft and the third step shaft are sequentially reduced; the first step shaft is of a hexagonal prism structure, the second step shaft is of a cylindrical section structure, and the third step shaft is of an internal thread section structure;
through holes are formed in the cylindrical section structure and the hexagonal prism structure; the threaded section structure is provided with a threaded hole; the threaded hole and the through hole are coaxially arranged and communicated;
the cylindrical section structure is arranged in the first mounting hole; the hexagonal prism structure is arranged on the outer side of the clamp body; the threaded hole is in threaded connection with the transmission screw rod.
Preferably, the transmission screw comprises a cylindrical section and a threaded section, and the diameter of the cylindrical section is larger than that of the threaded section; the cylindrical section of the transmission screw is assembled in a through hole formed in the hexagonal threaded sleeve and penetrates through the through hole of the hexagonal threaded sleeve; and the thread section of the transmission screw is in thread fit with a threaded hole formed in the hexagonal thread sleeve.
Preferably, four matching holes are uniformly distributed on the side wall of the cylindrical section along the circumferential direction of the cylindrical section, and the two matching holes which are symmetrically distributed are internally provided with the shifting pins.
Preferably, a bushing is arranged between the transmission screw and the replaceable anvil, the bushing is of a second-order stepped shaft structure, the small end of the bushing is assembled in the transmission screw, and the end face of the large end of the bushing is provided with a chamfer.
Preferably, the replaceable anvil comprises a cylindrical middle section, one end of the cylindrical middle section is of a cone structure, and the other end of the cylindrical middle section is a cylindrical connecting section; the cylindrical connecting section is connected with the threaded section of the transmission screw; the middle section of the cylinder is sleeved with a bushing and is in clearance fit with the bushing; the cone structure is matched with a taper hole of the combustion chamber casing.
Preferably, two milling flats which are symmetrically arranged are arranged on the side wall of the cylindrical middle section.
Preferably, a second mounting hole is formed in the closed end of the clamp body, and a handle is mounted in the second mounting hole;
the second mounting hole and the first mounting hole are arranged on the same side, and the axis of the second mounting hole is perpendicular to the axis of the first mounting hole.
Preferably, the lower side wall of the opening end of the clamp body is provided with a notch; the notch and the first mounting hole are coaxially arranged.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a device for mechanical extrusion type flaring, which is good in manufacturability and convenient for machining and assembling components; the device is convenient for aligning the flaring position and the assembly part and has uniform stress; the device is convenient and easy to operate, has self-adaptability and does not need to support the casing; the deformation of the flaring can be controlled, the flaring is in a mechanical extrusion mode instead of impact deformation, and the defect of damage is avoided.
Furthermore, the cylindrical section is used for avoiding interference with the casing, and the thread section does not need to be overlong; the thread section is in threaded connection with the arch clamp, and the hexagonal thread sleeve can move downwards until the bushing 4 is in quick contact with the workpiece support; the hexagonal prism is the force application part of the thread bush, and the hexagonal prism needs to be rotated by hands or a spanner.
Further, the cylindrical section in the drive screw is used for arranging the poking pin hole. The cylindrical section is provided with holes which are divided into four equal parts, so that the shifting pin 7 is inserted into the transmission screw rod 6, and then force is applied to rotate the transmission screw rod. The thread segments are intended to transmit force, by rotation, to turn the drive screw 6 downwards, and finally mechanically compress to deform the flare nut.
Furthermore, the notch is used for quickly forking the shaft shoulder of the supporting plate nut and supporting the supporting plate nut to prevent the supporting plate nut from loosening, so that the force bearing effect is realized.
Furthermore, four holes distributed at 90 degrees are formed in the cylindrical section of the transmission screw rod, so that the four holes can be switched at 90 degrees when force is applied through a shifting pin.
Further, mill that sets up on the cylinder interlude of interchangeable hammering block is flat, when the purpose needs to be changed, can utilize here centre gripping and extract.
Furthermore, the large end of the bushing is provided with a round chamfer so as to avoid the corner of the casing, thereby facilitating the guiding without damaging the corresponding contact surface at the casing.
In conclusion, the bypass bleed air pipe mounting seat ensures that the bypass bleed air pipe mounting seat is uniformly stressed and is not damaged when in flaring, and is quickly and efficiently deformed; the flaring structure is novel in structure, efficient, practical, safe and reliable, and solves the flaring problems of mounting seats, supporting plate self-locking nuts, bushings and the like which need to be assembled in a multi-model combustion chamber casing assembly.
Drawings
FIG. 1 is a simplified characteristic diagram of a prior art thin-walled mount flare assembly;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a state diagram of the use of the present invention;
FIG. 4 is a view A-A of the present invention;
FIG. 5 is a schematic view of the clip body structure of the present invention;
FIG. 6 is a schematic view of a hexagonal thread form of the present invention;
FIG. 7 is a schematic view of the drive screw configuration of the present invention;
FIG. 8 is a schematic view of the bushing configuration of the present invention;
FIG. 9 is a schematic view of an alternative anvil construction of the present invention;
FIG. 10 is a schematic view of the handle structure of the present invention;
FIG. 11 is a schematic view of the deadbolt structure of the present invention;
the clamping device comprises a clamping body 1, a clamp body 2, a handle 3, a replaceable anvil 4, a lining 5, a hexagonal thread sleeve 6, a transmission screw 7, a shifting pin 101, a first mounting hole 102, a second mounting hole 103, a notch 301, a cylindrical middle section 302, a conical structure 303, a cylindrical connecting section 501, a hexagonal prism structure 502, a cylindrical section structure 503, an internal thread section structure 601, a cylindrical section 602 and a thread section.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 2 to 5, the device for mechanical extrusion type flaring provided by the invention comprises a clamp body 1, a handle 2, an interchangeable anvil 3, a bushing 4, a hexagonal threaded sleeve 5, a transmission screw 6 and a shifting pin 7, wherein the clamp body 1 is of an arch structure, a first mounting hole is formed in the upper side wall of the opening end of the clamp body 1, and the axis of the first mounting hole is perpendicular to the axis of the upper side wall of the clamp body 1; the first mounting hole is internally provided with a hexagonal thread bush 5, and the hexagonal thread bush 5 is internally provided with a transmission screw 6 in a matching way.
As shown in fig. 6, the hexagonal thread bush 5 has a three-step shaft structure, which is respectively a first step shaft, a second step shaft and a third step shaft, and the diameters of the first step shaft, the second step shaft and the third step shaft are sequentially reduced; the first step shaft is a hexagonal prism structure 501, the second step shaft is a cylindrical section structure 502, and the third step shaft is an internal thread section structure 503.
Through holes are formed in the cylindrical section structure 502 and the hexagonal prism structure 501; a threaded hole is formed in the internal thread section structure 503; the threaded hole and the through hole are coaxially arranged and communicated.
The cylindrical section structure 502 is mounted in the first mounting hole 101; the hexagonal prism structure 501 is arranged on the outer side of the clip body 1.
As shown in fig. 7, the drive screw 6 includes a cylindrical section 601 and a threaded section 602, four fitting holes are uniformly distributed on the side wall of the cylindrical section along the circumferential direction thereof, wherein two symmetrically arranged fitting holes are provided with the shift pins 7, as shown in fig. 11; the diameter of the cylindrical section 601 is larger than the diameter of the threaded section 602.
The cylindrical section 601 of the drive screw 6 is assembled in the through hole of the hexagonal thread bush 5 and penetrates through the through hole of the hexagonal thread bush 5.
The thread section 602 of the drive screw 6 is in threaded fit with the threaded hole of the hexagonal threaded sleeve 5.
The axis of the mating hole is perpendicular to the axis of the drive screw 6.
And a bushing 4 is arranged at the end part of the thread section of the hexagonal thread sleeve 5.
As shown in fig. 8, the bushing 4 is a second-step shaft structure, and the small end of the second-step shaft structure is assembled at the end of the threaded section of the hexagonal threaded sleeve 5; the end face of the big end is provided with a chamfer.
A replaceable anvil 3 is fitted inside the bushing 4.
As shown in fig. 9, the replaceable anvil 3 includes a cylindrical middle section 301, one end of the cylindrical middle section 301 is a conical structure 302, and the other end is a cylindrical connecting section 303; wherein, the cylindrical connecting section 303 is connected with the thread section of the transmission screw 6; the cylindrical middle section 301 is in clearance fit with the bush 4; the cone structure 301 is matched with a taper hole of the combustion chamber casing, and the taper of the cylinder structure 301 is consistent with that of the taper hole of the combustion chamber casing.
Two milling flats which are symmetrically arranged are arranged on the side wall of the middle section 301 of the cylinder.
A second mounting hole is formed in the closed end of the clamp body 1, and a handle 2 is mounted in the second mounting hole, as shown in fig. 10.
The second mounting hole 102 is disposed on the same side as the first mounting hole 101, and the axis of the second mounting hole 102 is perpendicular to the axis of the first mounting hole 101.
The lower side wall of the opening end of the clamp body 1 is provided with a notch 103; the gap 103 is arranged coaxially with the first mounting hole.
The clamp comprises a hand-held base consisting of a clamp body 1 and a handle 2, a movable body assembly for guiding consisting of a lining 4 and a hexagonal thread sleeve 5, and a force transmission assembly consisting of an interchangeable anvil 3, a transmission screw 6 and a shifting pin 7, wherein the force transmission assembly belongs to a working part and is used for flaring a thin-wall mounting seat.
The method comprises the following operation steps:
as shown in FIG. 1, the upper half is a combustion chamber casing, and the characteristic mounting portion is a tapered hole; the lower half part is a thin-wall mounting seat or a supporting plate nut and a connecting bush; the thin wall of the thin wall mounting seat is a deformation area, a cylindrical surface is arranged before flaring, and a conical surface is arranged after flaring, and is attached to a conical hole of the casing; the wall thickness of the flaring section is 0.65 mm.
When the device is used, a front flange of a casing is placed on a bench in a vertical state, a thin-wall mounting seat is attached to the lower portion of the front flange, a thin-wall portion penetrates through a mounting hole of the flange, a U-shaped groove of a clamp body 1 abuts against a cylindrical section of the mounting seat, the opening of a flaring device is widened by rotating a hexagonal thread sleeve 5, then the thin-wall mounting seat is placed on a corresponding assembly portion of the casing, the flaring device supports the thin-wall mounting seat and keeps concentric, a lining 4 moves downwards and contacts the upper surface of the front flange of the casing by reversely rotating the hexagonal thread sleeve 5, a shifting pin 7 is rapidly rotated until the shifting pin contacts the thin-wall mounting seat, and the shifting pin 7 is forcibly pulled to enable a replaceable anvil 3 to contact with the thin wall of the mounting seat and extrude the thin-wall to deform until the replaceable anvil is attached to a mounting taper.
The invention has novel structure, high efficiency, practicality, safety and reliability, solves the problem of flared installation in multi-machine assembly, is a typical problem of engine assembly, and has strong popularization value.
Claims (10)
1. The device for mechanical extrusion type flaring is characterized by comprising a clamp body (1), a replaceable anvil (3), a hexagonal thread sleeve (5), a transmission screw (6) and a shifting pin (7), wherein the clamp body (1) is of an arch structure, a first mounting hole is formed in the upper side wall of the opening end of the clamp body (1), and the axis of the first mounting hole is perpendicular to the axis of the upper side wall of the clamp body (1); a transmission screw (6) is assembled in the first mounting hole; the combustion chamber engine case is characterized in that a shifting pin (7) is installed at one end of the transmission screw (6), a replaceable anvil (3) is installed at the other end of the transmission screw, the free end of the replaceable anvil (3) is a working part, the working part is of a cone structure, and the taper of the cone structure is matched with the taper of a combustion chamber engine case taper hole.
2. The device for mechanical squeeze flaring of claim 1, wherein a hexagonal thread bush (5) is provided between said first mounting hole and said drive screw (6).
3. The device for mechanical extrusion type flaring according to claim 2, wherein the hexagonal thread bush (5) has a three-step shaft structure, namely a first step shaft, a second step shaft and a third step shaft, and the diameters of the first step shaft, the second step shaft and the third step shaft are sequentially reduced; the first step shaft is of a hexagonal prism structure (501), the second step shaft is of a cylindrical section structure (502), and the third step shaft is of an internal thread section structure (503);
through holes are formed in the cylindrical section structure (502) and the hexagonal prism structure (501); a threaded hole is formed in the threaded section structure (503); the threaded hole and the through hole are coaxially arranged and communicated;
the cylindrical section structure (502) is installed in the first installation hole (101); the hexagonal prism structure (501) is arranged on the outer side of the clamp body (1); the threaded hole is in threaded connection with the transmission screw rod (6).
4. The device for mechanical squeeze flaring of claim 1, wherein said drive screw (6) comprises a cylindrical section (601) and a threaded section (602), said cylindrical section (601) having a diameter larger than the diameter of the threaded section (602); the cylindrical section (601) of the transmission screw (6) is assembled in a through hole formed in the hexagonal thread sleeve (5) and penetrates through the through hole of the hexagonal thread sleeve (5); and the thread section (602) of the transmission screw (6) is in thread fit with a threaded hole formed in the hexagonal thread sleeve (5).
5. The mechanical extrusion type flaring device according to claim 4, wherein four matching holes are uniformly distributed on the side wall of the cylindrical section (601) along the circumferential direction of the cylindrical section, and the two matching holes which are symmetrically arranged are internally provided with the shifting pins (7).
6. The device for mechanical extrusion type flaring according to claim 1, wherein a bushing (4) is arranged between the transmission screw (6) and the replaceable anvil (3), the bushing (4) is of a second-order stepped shaft structure, the small end of the bushing is assembled in the transmission screw (6), and the large end face of the bushing is provided with a chamfer.
7. The device for mechanical squeeze flaring of claim 1, wherein said interchangeable anvil (3) comprises a cylindrical middle section (301), one end of said cylindrical middle section (301) is a conical structure (302), and the other end is a cylindrical connecting section (303); wherein the cylindrical connecting section (303) is connected with the thread section of the transmission screw (6); the middle section (301) of the cylinder is sleeved with a bushing (4) and is in clearance fit with the bushing (4); the cone structure (301) is matched with a taper hole of the combustion chamber casing.
8. The device for mechanical squeeze flaring of claim 7, wherein two milling flats are symmetrically arranged on the side wall of the cylindrical middle section (301).
9. The device for mechanical extrusion type flaring according to claim 1, wherein a second mounting hole is formed in the closed end of the clamp body (1), and the handle (2) is mounted in the second mounting hole;
the second mounting hole (102) is arranged on the same side as the first mounting hole (101), and the axis of the second mounting hole (102) is perpendicular to the axis of the first mounting hole (101).
10. The mechanical extrusion type flaring device according to claim 1, wherein a notch (103) is formed in the lower side wall of the opening end of the clamp body (1); the notch (103) is arranged coaxially with the first mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245140.0A CN111283612A (en) | 2020-03-31 | 2020-03-31 | Device for mechanical extrusion type flaring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245140.0A CN111283612A (en) | 2020-03-31 | 2020-03-31 | Device for mechanical extrusion type flaring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111283612A true CN111283612A (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010245140.0A Pending CN111283612A (en) | 2020-03-31 | 2020-03-31 | Device for mechanical extrusion type flaring |
Country Status (1)
| Country | Link |
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| CN (1) | CN111283612A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112246987A (en) * | 2020-09-29 | 2021-01-22 | 中国航发动力股份有限公司 | Self-adaptive positioning nut riveting tool and method |
| CN113333541A (en) * | 2021-06-30 | 2021-09-03 | 中国航发动力股份有限公司 | Electric flaring device and method |
| CN113941844A (en) * | 2020-07-15 | 2022-01-18 | 中国航发商用航空发动机有限责任公司 | Mounting and detecting tool |
| CN113953814A (en) * | 2020-07-21 | 2022-01-21 | 中国航发商用航空发动机有限责任公司 | Mounting tool and mounting method for supporting plate nut |
| CN115008170A (en) * | 2022-06-24 | 2022-09-06 | 江西中发天信航空发动机科技有限公司 | Linkage type outer box numerical control separator |
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| CN106607791A (en) * | 2015-10-27 | 2017-05-03 | 上海航天设备制造总厂 | Chambering and detaching tool for pin roll |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941844A (en) * | 2020-07-15 | 2022-01-18 | 中国航发商用航空发动机有限责任公司 | Mounting and detecting tool |
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| CN112246987A (en) * | 2020-09-29 | 2021-01-22 | 中国航发动力股份有限公司 | Self-adaptive positioning nut riveting tool and method |
| CN113333541A (en) * | 2021-06-30 | 2021-09-03 | 中国航发动力股份有限公司 | Electric flaring device and method |
| CN115008170A (en) * | 2022-06-24 | 2022-09-06 | 江西中发天信航空发动机科技有限公司 | Linkage type outer box numerical control separator |
| CN115008170B (en) * | 2022-06-24 | 2023-09-26 | 江西中发天信航空发动机科技有限公司 | Linkage type numerical control separator for outer casing |
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Application publication date: 20200616 |