CN109707714B - Conical surface radial displacement tensioning device - Google Patents
Conical surface radial displacement tensioning device Download PDFInfo
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- CN109707714B CN109707714B CN201910039483.9A CN201910039483A CN109707714B CN 109707714 B CN109707714 B CN 109707714B CN 201910039483 A CN201910039483 A CN 201910039483A CN 109707714 B CN109707714 B CN 109707714B
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- positioning shaft
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The invention belongs to the field of aviation assembly process equipment, and relates to a conical surface radial displacement tensioning device. The device comprises a positioning support, a positioning shaft, a conical surface tensioning mandrel, a gasket, a locking nut, a guiding tensioning key and a steel wire retainer ring; the positioning support is cylindrical and is fixed on the assembly type rack for supporting; the positioning shaft is provided with 6 radial grooves, and a stepped through hole is formed in the positioning shaft; the outer conical surface of the conical surface tensioning mandrel faces the radial groove on the positioning shaft; the guide tensioning keys are arranged in 6 radial grooves of the positioning shaft, and two ends of the guide tensioning keys are clamped by steel wire check rings; the conical surface tensioning mandrel is rotated to push out and fall back the guiding tensioning key along the radial groove; the lock nut is used for locking and fixing a product, and the gasket is arranged between the lock nut and the product. The invention realizes that the radial dimension of the positioning shaft has larger adjustment quantity, accurate positioning and reliable clamping, and the positioning shaft is not contacted with the product when being pulled out, thereby ensuring the surface quality of the product.
Description
Technical Field
The invention belongs to the field of aviation assembly process equipment, and relates to a conical surface radial displacement tensioning device.
Background
In the field of aviation assembly, whether a military aircraft or a civil aircraft exists, a large number of special-shaped parts with hole characteristics are required to be ensured to be in correct theoretical positions through assembly tools, and generally, the requirements of coaxiality are met. The conventional assembly fixture is ensured by matching the rigid shaft or the elastic expansion shaft structure with the inner hole of the positioned product, but after the position is fixed, assembly stress exists after the assembly is connected with other products, so that stress deformation is generated, and the positioning shaft is difficult to pull out when the products are put down. Although the elastic expansion shaft structure has a certain elastic quantity in the radial direction, the elastic expansion shaft structure is insufficient for overcoming the deformation quantity caused by the assembly stress.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the radial displacement tensioning device for the conical surface, which can realize accurate positioning and reliable clamping, and simultaneously ensure that the radial dimension of the positioning tensioning shaft is reduced enough to overcome the deformation caused by assembly stress when a product is put down, namely, the radial dimension of the positioning shaft can be changed in a large range. Therefore, the product is easy to put down, and the positioning shaft is not contacted with the product when being pulled out, so that the product is prevented from being scratched.
The technical scheme of the invention is as follows:
the conical surface radial displacement tensioning device comprises a positioning support 1, a positioning shaft 2, a conical surface tensioning mandrel 3, a gasket 4, a locking nut 5, a guiding tensioning key 6 and a steel wire retainer ring 7;
the positioning support 1 is cylindrical and is fixed on the assembly type rack for supporting, and the left end face of the positioning support 1 is used for positioning the end face of the product 8;
the positioning shaft 2 penetrates into the positioning support 1 from the right side, and 6 radial grooves are formed in the outer cylindrical surface of the left extending end and are used for installing the guiding tensioning key 6; the positioning shaft 2 is internally provided with a stepped through hole, the left side is provided with a large-diameter hole section, and the right side is provided with threads; the conical surface tensioning mandrel 3 is a stepped shaft, the outer circular surface of the left large-diameter shaft section is a conical surface, the right small-diameter shaft section is provided with external threads, the tail end of the small-diameter shaft section is a rotating shaft section, the conical surface tensioning mandrel 3 penetrates through the large-diameter hole end of the positioning shaft 2, and the small-diameter shaft section is in threaded connection with the small-diameter hole section of the positioning shaft 2;
the lower surface of the guide tensioning key 6 is a conical cambered surface, the upper surface of the guide tensioning key is an arc surface, the guide tensioning key is arranged in 6 radial grooves of the positioning shaft 2 and slides up and down along the radial grooves, and two ends of the guide tensioning key are clamped by steel wire check rings 7 to prevent the guide tensioning key from sliding axially; the upper surfaces of the 6 guide tension keys 6 form a cylindrical surface with precision in a tension state, the cylindrical surface is matched with an inner hole of a product 8 and is tensioned, the lower surfaces of the guide tension keys 6 form conical surfaces, high-pair transmission is formed with the conical surfaces of the conical surface tension mandrels 3 to realize the conversion of axial displacement and radial displacement, namely the rotary conical surface tension mandrels 3 realize the push-out and fall-back of the guide tension keys 6 along radial grooves; the lock nut 5 is in threaded connection with the leftmost end of the positioning shaft 2 and used for locking and fixing a product 8, and the gasket 4 is arranged between the lock nut 5 and the product 8.
Rotating the conical surface tensioning mandrel 3 to push out the guiding tensioning key 6 along a radial groove of the positioning shaft 2, and calibrating the cylindrical surface size formed by the guiding tensioning key 6 to be the matching size of the inner hole of the positioned product 8 by using a micrometer; the product 8, the gasket 4 and the lock nut 5 are sequentially installed; the conical surface tensioning mandrel 3 is rotated forwards, the guide tensioning key 6 is pushed out, tensioning force is applied to the product 8, and the product 8 is compressed and positioned; when the product is assembled and put down, the conical surface tensioning mandrel 3 is rotated backwards, the guide tensioning key 6 falls into the radial groove under the elastic action of the steel wire check ring 7, the lock nut 5 and the gasket 4 are disassembled, the product 8 is pulled out, and the smooth putting down of the product 8 is realized.
The invention has the beneficial effects that:
the radial dimension of the positioning shaft is adjusted in a large range, accurate positioning and reliable clamping can be realized, the product is easy to put down, the positioning shaft is not contacted with the product when pulled out, and the surface quality of the product is ensured.
Drawings
FIG. 1 is a schematic structural view of a conical surface radial displacement tensioning device;
FIG. 2 is an axial cross-sectional view of a conical surface radial displacement tensioning device;
FIG. 3 is a radial cross-sectional view of a conical surface generating radial displacement tensioning device;
in the figure: 1, positioning a support; 2, positioning a shaft; 3, conical surface tensioning mandrel; 4, a gasket; 5, locking the nut; 6, guiding a tensioning key; 7, a steel wire retainer ring; 8 products.
Detailed Description
Specific embodiments of the present invention will be further described below with reference to the drawings and the accompanying technical schemes.
As shown in FIG. 1, the conical surface radial displacement tensioning device comprises a positioning support 1, a positioning shaft 2, a conical surface tensioning mandrel 3, a gasket 4, a lock nut 5, a guiding tensioning key 6 and a steel wire retainer ring 7;
the positioning support 1 is cylindrical and is fixed on the assembly type rack for supporting, and the left end face of the positioning support 1 is used for positioning the end face of the product 8;
the positioning shaft 2 penetrates into the positioning support 1 from the right side, and 6 radial grooves are formed in the outer cylindrical surface of the left extending end and are used for installing the guiding tensioning key 6; the positioning shaft 2 is internally provided with a stepped through hole, the left side is provided with a large-diameter hole section, and the right side is provided with threads; the conical surface tensioning mandrel 3 is a stepped shaft, the outer circular surface of the left large-diameter shaft section is a conical surface, the right small-diameter shaft section is provided with external threads, the tail end of the small-diameter shaft section is a rotating shaft section, the conical surface tensioning mandrel 3 penetrates through the large-diameter hole end of the positioning shaft 2, and the small-diameter shaft section is in threaded connection with the small-diameter hole section of the positioning shaft 2;
the lower surface of the guide tensioning key 6 is a conical cambered surface, the upper surface of the guide tensioning key is an arc surface, the guide tensioning key is arranged in 6 radial grooves of the positioning shaft 2 and slides up and down along the radial grooves, and two ends of the guide tensioning key are clamped by steel wire check rings 7 to prevent the guide tensioning key from sliding axially; the upper surfaces of the 6 guide tension keys 6 form a cylindrical surface with precision in a tension state, the cylindrical surface is matched with an inner hole of a product 8 and is tensioned, the lower surfaces of the guide tension keys 6 form conical surfaces, high-pair transmission is formed with the conical surfaces of the conical surface tension mandrels 3 to realize the conversion of axial displacement and radial displacement, namely the rotary conical surface tension mandrels 3 realize the push-out and fall-back of the guide tension keys 6 along radial grooves; the lock nut 5 is in threaded connection with the leftmost end of the positioning shaft 2 and used for locking and fixing a product 8, and the gasket 4 is arranged between the lock nut 5 and the product 8.
Rotating the conical surface tensioning mandrel 3 to push out the guiding tensioning key 6 along a radial groove of the positioning shaft 2, and calibrating the cylindrical surface size formed by the guiding tensioning key 6 to be the matching size of the inner hole of the positioned product 8 by using a micrometer; the product 8, the gasket 4 and the lock nut 5 are sequentially installed; the conical surface tensioning mandrel 3 is rotated forwards, the guide tensioning key 6 is pushed out, tensioning force is applied to the product 8, and the product 8 is compressed and positioned; when the product is assembled and put down, the conical surface tensioning mandrel 3 is rotated backwards, the guide tensioning key 6 falls into the radial groove under the elastic action of the steel wire check ring 7, the lock nut 5 and the gasket 4 are disassembled, the product 8 is pulled out, and the smooth putting down of the product 8 is realized.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (1)
1. The conical surface radial displacement tensioning device is characterized by comprising a positioning support (1), a positioning shaft (2), a conical surface tensioning mandrel (3), a gasket (4), a locking nut (5), a guiding tensioning key (6) and a steel wire retainer ring (7);
the positioning support (1) is cylindrical and is fixed on the assembly type rack for supporting, and the left end face of the positioning support (1) is used for positioning the end face of the product (8);
the positioning shaft (2) penetrates into the positioning support (1) from the right side, and 6 radial grooves are formed in the outer cylindrical surface of the left extending end and are used for installing the guide tensioning key (6); the positioning shaft (2) is internally provided with a stepped through hole, the left side is provided with a large-diameter hole section, and the right side is provided with threads; the conical surface tensioning mandrel (3) is a stepped shaft, the outer circular surface of the left large-diameter shaft section is a conical surface, the right small-diameter shaft section is provided with external threads, the tail end of the small-diameter shaft section is a rotating shaft section, the conical surface tensioning mandrel (3) penetrates through the large-diameter hole end of the positioning shaft (2), and the small-diameter shaft section is in threaded connection with the small-diameter hole section of the positioning shaft (2);
the lower surface of the guide tensioning key (6) is a conical cambered surface, the upper surface of the guide tensioning key is an arc surface, the guide tensioning key is arranged in 6 radial grooves of the positioning shaft (2) and slides up and down along the radial grooves, and two ends of the guide tensioning key are clamped by steel wire check rings (7) to prevent the guide tensioning key from sliding axially; the upper surfaces of the 6 guide tensioning keys (6) form a cylindrical surface with precision in a tensioning state, the cylindrical surface is matched with an inner hole of a product (8) and is tensioned, the lower surfaces of the guide tensioning keys (6) form conical surfaces, high-pair transmission is formed with the conical surfaces of the conical surface tensioning mandrels (3) to realize the conversion of axial displacement and radial displacement, namely the rotary conical surface tensioning mandrels (3) realize the push-out and fall-back of the guide tensioning keys (6) along radial grooves;
the locking nut (5) is in threaded connection with the leftmost end of the positioning shaft (2) and is used for locking and fixing a product (8); the gasket (4) is arranged between the lock nut (5) and the product (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039483.9A CN109707714B (en) | 2019-01-16 | 2019-01-16 | Conical surface radial displacement tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039483.9A CN109707714B (en) | 2019-01-16 | 2019-01-16 | Conical surface radial displacement tensioning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109707714A CN109707714A (en) | 2019-05-03 |
| CN109707714B true CN109707714B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910039483.9A Active CN109707714B (en) | 2019-01-16 | 2019-01-16 | Conical surface radial displacement tensioning device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111075815A (en) * | 2019-12-24 | 2020-04-28 | 安徽博微联控科技有限公司 | Mechanical opposite-insertion locking switching device and method |
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|---|---|---|---|---|
| DE3410868A1 (en) * | 1984-03-21 | 1985-10-03 | Thanh-Son Dipl.-Ing. 1000 Berlin Le | Re-usable, positively-locking nut lock |
| CN2748686Y (en) * | 2004-03-17 | 2005-12-28 | 徐州工程机械科技股份有限公司徐工研究院 | Shaft installation positioning mechanism |
| WO2011138306A1 (en) * | 2010-05-04 | 2011-11-10 | Cedric Terence Cooke | Radially expandable assembly and use thereof |
| CN202224881U (en) * | 2011-08-03 | 2012-05-23 | 珠海固得焊接自动化设备有限公司 | Surface contact tensioning mechanism |
| CN203509455U (en) * | 2013-10-14 | 2014-04-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Spring type multi-segment separated tightening positioning mechanism |
| CN203655823U (en) * | 2013-12-30 | 2014-06-18 | 上海沃迪自动化装备股份有限公司 | Elastic internal expanding device |
| DE202016103068U1 (en) * | 2016-06-09 | 2016-07-11 | Arnold Ag | Blind fastening device for fastening a component |
| CN106041150A (en) * | 2016-07-20 | 2016-10-26 | 江苏腾旋科技股份有限公司 | Outward expansion mandrel with multiple support parts |
| CN206000829U (en) * | 2016-05-04 | 2017-03-08 | 无锡金球机械有限公司 | Tensioner pin |
| CN106704327A (en) * | 2017-03-17 | 2017-05-24 | 山东工商学院 | Bolt special for heavy duty goods shelf |
| CN207606569U (en) * | 2017-09-13 | 2018-07-13 | 辽沈工业集团有限公司 | One kind, which rises, presss from both sides tooling |
| CN209818473U (en) * | 2019-01-16 | 2019-12-20 | 沈阳飞机工业（集团）有限公司 | Conical surface radial displacement tensioning device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130315665A1 (en) * | 2012-05-24 | 2013-11-28 | Fenner U.S., Inc. | Mounting device |
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2019
- 2019-01-16 CN CN201910039483.9A patent/CN109707714B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3410868A1 (en) * | 1984-03-21 | 1985-10-03 | Thanh-Son Dipl.-Ing. 1000 Berlin Le | Re-usable, positively-locking nut lock |
| CN2748686Y (en) * | 2004-03-17 | 2005-12-28 | 徐州工程机械科技股份有限公司徐工研究院 | Shaft installation positioning mechanism |
| WO2011138306A1 (en) * | 2010-05-04 | 2011-11-10 | Cedric Terence Cooke | Radially expandable assembly and use thereof |
| CN202224881U (en) * | 2011-08-03 | 2012-05-23 | 珠海固得焊接自动化设备有限公司 | Surface contact tensioning mechanism |
| CN203509455U (en) * | 2013-10-14 | 2014-04-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Spring type multi-segment separated tightening positioning mechanism |
| CN203655823U (en) * | 2013-12-30 | 2014-06-18 | 上海沃迪自动化装备股份有限公司 | Elastic internal expanding device |
| CN206000829U (en) * | 2016-05-04 | 2017-03-08 | 无锡金球机械有限公司 | Tensioner pin |
| DE202016103068U1 (en) * | 2016-06-09 | 2016-07-11 | Arnold Ag | Blind fastening device for fastening a component |
| CN106041150A (en) * | 2016-07-20 | 2016-10-26 | 江苏腾旋科技股份有限公司 | Outward expansion mandrel with multiple support parts |
| CN106704327A (en) * | 2017-03-17 | 2017-05-24 | 山东工商学院 | Bolt special for heavy duty goods shelf |
| CN207606569U (en) * | 2017-09-13 | 2018-07-13 | 辽沈工业集团有限公司 | One kind, which rises, presss from both sides tooling |
| CN209818473U (en) * | 2019-01-16 | 2019-12-20 | 沈阳飞机工业（集团）有限公司 | Conical surface radial displacement tensioning device |
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| CN109707714A (en) | 2019-05-03 |
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