CN105619145A - Clamping device and method used for precise machining of outer surface of shape-preserving fairing - Google Patents
Clamping device and method used for precise machining of outer surface of shape-preserving fairing Download PDFInfo
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- CN105619145A CN105619145A CN201511008966.0A CN201511008966A CN105619145A CN 105619145 A CN105619145 A CN 105619145A CN 201511008966 A CN201511008966 A CN 201511008966A CN 105619145 A CN105619145 A CN 105619145A
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- clamping
- clamping device
- conformal dome
- outside surface
- conformal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a clamping device and method used for precise machining of the outer surface of a shape-preserving fairing and relates to a clamping device and method. The problem that according to an existing clamping device and method for the outer surface of a shape-preserving fairing, the inner surface of the fairing is completely attached to the clamping device, and consequently the machining precision is low is solved. A plurality of contact units are arranged on the outer side wall of a clamping base body in the circumferential direction and the axial direction of the clamping base body in a matrix manner. The outer surfaces of the multiple contact units are located on the same curved face. The curve equation of the curved face is consistent with the curve equation of the inner surface of the shape-preserving fairing. A filling unit is formed by a center through hole, a longitudinal through groove and a transverse through groove of the clamping base body jointly. The contact units and the clamping base body are fixedly and integrally installed. An annular groove is machined in the position, connected with a base, on the clamping base body. The method includes the first step of fixing of the fairing, the second step of inverted filling and the third step of connecting and fixing after solidification. The clamping device and method are used for precision machining of the outer surface of the shape-preserving fairing.
Description
Technical field
The present invention relates to a kind of clamping device for conformal dome outside surface precision sizing and clamping method, belong to mechanical workout clamping device technical field.
Background technology
In order to adapt to the development of high-speed aircraft, the aerodynamics of trimmed flight device requires, contradiction between stealthy and optical property, conformal optical element arises at the historic moment, that is: to improve the optical window smoothly adapting to system platform outer shape for the purpose of system air dynamic performance. Primary key element in conformal optical element is applied is the nose cone of aircraft, relative to tradition semisphere nose cone, conformal dome can reduce the flight resistance of aircraft significantly, improve the air flow field around aircraft, reduce aero-optical effect to the impact of aircraft internal imaging quality.
The unconventional shape of conformal dome has incomparable advantage compared with tradition semisphere nose cone, but this also gives, and it is accurate, Ultra-precision Turning brings difficulty and challenge greatly. , Ultra-precision Turning process accurate at conformal dome also exist the degree of depth is big, steepness height, operating force are big, the workpiece easily problem such as distortion. In addition conformal dome is generally thin-walled hard and fragile material, cannot carry out direct vacuum suck clamping conventional in optical aspherical surface processing or hollow bonding clamping. The existing clamping device for the processing of conformal dome outside surface and clamping method are structure formation nose cone internal surface and clamping device fitted completely, this can ensure the total deformation of nose cone to a certain extent, but owing to nose cone internal surface and clamping device have certain face type error all unavoidably, therefore the junction surface of the two is for locally contacting even point cantact, cause unpredictable structural strain's amount, and the stress of local concentrates that to cause the surfacing of nose cone to collapse possibly broken, cause local damage.
To sum up, the existing clamping device for the processing of conformal dome outside surface and clamping method are structure formation nose cone internal surface and clamping device fitted completely, owing to nose cone internal surface and clamping device have certain face type error all unavoidably, working accuracy is low.
Summary of the invention
The present invention is the existing clamping device for the processing of conformal dome outside surface of solution and method is structure formation nose cone internal surface and clamping device fitted completely, there is the problem that working accuracy is low, and then a kind of clamping device for conformal dome precision sizing and clamping method thereof are provided.
The present invention solves the problems of the technologies described above the technical scheme taked to be:
The clamping device for conformal dome outside surface precision sizing of the present invention comprises base, clamping matrix and some osculating elements, base is annular base, clamping matrix is tubular, one end of clamping matrix is packed on the end face of base, the outer side wall of clamping matrix is placed with some osculating elements along its circumferential direction and axial matrix thereof, the outside surface of some osculating elements is all on same curved surface, and the curvilinear equation of this curved surface is consistent with the curvilinear equation of the internal surface of conformal dome, a longitudinal groove is formed between adjacent two row osculating elements, a horizontal groove is formed between adjacent two row's osculating elements, between longitudinal groove and horizontal groove, transverse and longitudinal interweaves the setting that is interconnected, the center through hole of clamping matrix, longitudinal groove and horizontal groove form filler cells jointly, osculating element and clamping matrix are fixedly mounted with and are integrated, on clamping matrix, junction with base is processed with annular recesses, base end face is arranged on machine tool chief axis.
The clamping method step for conformal dome outside surface precision sizing of the present invention is as follows:
Step one, fixing nose cone: conformal dome is directly covered on clamping matrix and the internal surface of conformal dome and osculating element are in close contact, utilize assembly glue by mutually bonding with annular recesses for conformal dome opening end;
Step 2, inversion are filled: be inverted after being adhesively fixed by conformal dome, are injected from the center through hole of filler cells by weighting agent that is liquid or semi-solid state, and filler cells can be full of by the weighting agent of liquid state or semi-solid state along horizontal groove and longitudinal groove;
Step 3, solidify after be connected and fixed: to be filled dose solidify after, base is connected by through hole with machine tool chief axis through installing to adopt screw, thus realizes the processing and loading clamp of conformal dome.
The present invention compared with prior art has following useful effect:
The high-precision requirement when clamping device for conformal dome outside surface precision sizing of the present invention and clamping method can effectively meet conformal dome clamping, reduce and add the distortion caused by operating force man-hour, the total deformation of nose cone in precision sizing process is made to be less than 1 ��m, reduce the stress raisers after nose cone clamping, thus greatly improve the working accuracy of nose cone; The present invention has vital role for the working accuracy improving conformal dome.
Accompanying drawing explanation
Fig. 1 is the stereographic map of the clamping device for conformal dome outside surface precision sizing of the present invention;
Fig. 2 is the clamping device of the present invention and the main sectional view of installation of conformal dome.
Embodiment
Embodiment one: as shown in Fig. 1��2, the clamping device for conformal dome outside surface precision sizing of present embodiment comprises base 1, clamping matrix 3 and some osculating elements 2, base 1 is annular base, clamping matrix 3 is in tubular, one end of clamping matrix 3 is packed on the end face of base 1, the outer side wall of clamping matrix 3 is placed with some osculating elements 2 along its circumferential direction and axial matrix thereof, the outside surface of some osculating elements 2 is all on same curved surface, and the curvilinear equation of this curved surface is consistent with the curvilinear equation of the internal surface of conformal dome 6, a longitudinal groove 4-2 is formed between adjacent two row osculating elements 2, a horizontal groove 4-3 is formed between adjacent two row's osculating elements 2, between longitudinal groove 4-2 and horizontal groove 4-3, transverse and longitudinal interweaves the setting that is interconnected, the center through hole 4-1 of clamping matrix 3, longitudinal groove 4-2 and horizontal groove 4-3 forms filler cells 4 jointly, osculating element 2 and clamping matrix 3 are fixedly mounted with and are integrated, clamping matrix 3 is processed with annular recesses 5 with the junction of base 1, base 1 end face is arranged on machine tool chief axis.
Embodiment two: as shown in Figure 1, the contact surface profile of present embodiment osculating element 2 is Polygons or circle. So design, for directly contacting with conformal dome 6, the curvilinear equation of this curved surface is consistent with the curvilinear equation of the internal surface of conformal dome 6, reduces the stress raisers after conformal dome 6 clamping. Other composition and the relation of connection are identical with embodiment one.
Embodiment three: as shown in Figure 1, the contact surface profile of present embodiment osculating element 2 is rectangle, trapezoidal or trilateral. So design, for directly contacting with conformal dome 6, the curvilinear equation of this curved surface is consistent with the curvilinear equation of the internal surface of conformal dome 6, reduces the stress raisers after conformal dome 6 clamping. Other composition and the relation of connection are identical with embodiment two.
Embodiment four: as shown in Figure 2, the height of present embodiment clamping matrix 3 is the 2/3��3/4 of the height of conformal dome 6. So design, namely can reduce the contact area of clamping device and conformal dome 6 internal surface further thus reduce the juxtaposition metamorphose of conformal dome 6, can ensure that again conformal dome 6 is had enough supporting roles by clamping device in the course of processing. Other composition and the relation of connection are identical with embodiment one, two or three.
Embodiment five: as shown in Fig. 1��2, the diameter of present embodiment center through hole 4-1 is the 1/2��3/4 of conformal dome 6 maximum diameter, and the groove depth scope of longitudinal groove 4-2 and horizontal groove 4-3 is 3mm��10mm. So arrange, namely can ensure that clamping device has enough rigidity, can ensure that again filler cells 4 has enough spaces and weighting agent 7 flowed into until completing to fill. Other composition and the relation of connection are identical with embodiment four.
Embodiment six: as shown in Fig. 1��2, the outer rim of present embodiment base 1 is along the circumferential direction uniform is processed with multiple installation through hole 1-1, and the quantity installing through hole 1-1 is 6. So design, adopts screw to install through hole 1-1 through 6 and is connected with machine tool chief axis by base 1. Other composition and the relation of connection are identical with embodiment one, two, three or five.
Embodiment seven: as shown in Fig. 1��2, the material of clamping device described in present embodiment is low thermal coefficient of expansion metallic substance, and the thermal expansivity of described clamping device is less than 10. So design, low thermal coefficient of expansion metallic substance has excellent workability, and density is less, and thermal expansivity is less than 10, it is possible to reduce in processing the clamping device distortion caused by temperature variation. Other composition and the relation of connection are identical with embodiment six.
Embodiment eight: as shown in Fig. 1��2, the clamping method step for conformal dome outside surface precision sizing of present embodiment is as follows:
Step one, fixing nose cone: conformal dome 6 is directly covered on clamping matrix 3 and the internal surface of conformal dome 6 and osculating element 2 are in close contact, utilize assembly glue by mutually bonding with annular recesses 5 for conformal dome 6 opening end;
Step 2, inversion are filled: be inverted after being adhesively fixed by conformal dome 6, being injected from the center through hole 4-1 of filler cells 4 by weighting agent 7 that is liquid or semi-solid state, filler cells 4 can be full of by weighting agent 7 that is liquid or semi-solid state along horizontal groove 4-3 and longitudinal groove 4-2;
Step 3, solidify after be connected and fixed: to be filled dose 7 solidify after, base 1 is connected by through hole 1-1 with machine tool chief axis through installing to adopt screw, thus realizes the processing and loading clamp of conformal dome 6.
The effect of described filler cells 4 stores a certain amount of weighting agent 7, make in the space that weighting agent 7 is filled in conformal dome 6 and clamping device, thus realize the supplemental support effect to nose cone, reduce the distortion of conformal dome 6 in the course of processing, it is to increase working accuracy. Described clamping matrix 3 is the main element of clamping device, it is connected on base 1, playing a supportive role in clamping device, its height, wall thickness and radius etc. are the significant parameters affecting clamping device rigidity, determine the total deformation of nose cone in the course of processing to a great extent. Described osculating element 2 is positioned on base unit, is the contact part of conformal dome 6 to be processed with clamping device, and the effect of osculating element 2 is the location and the support that realize conformal dome 6; The shape of contact area and size affect stress raisers and the working accuracy of nose cone; Groove between osculating element 2 determines the quantity of unit, and numerous osculating elements 2 constitutes the class polynuclear plane of clamping device. Described annular recesses 5 is bonding element, is used for smearing low-stress glue during clamping, the opening end of conformal dome 6 and clamping device is bondd, thus fixing nose cone.
Embodiment nine: in present embodiment step one, assembly glue is low-stress optics structure glue. So operation, can reduce the distortion of conformal dome 6 in bonding process. Other step and operating process are identical with embodiment eight.
Embodiment ten: as shown in Figure 2, weighting agent 7 described in present embodiment step 2 is low melt point paraffin or gypsum. So operation, low melt point paraffin or gypsum easily from liquid or semi-solidification be solid-state. Other step and operating process are identical with embodiment eight or nine.
Principle of work:
Osculating element 2 owing to having on the internal surface of identical surface equation nose cone 6 and clamping device is directly in close contact, use assembly glue by bottom conformal dome 6 with the bonding element 5 of clamping device bonding fixing after, again the space between clamping device and conformal dome 6 is filled up along filler cells 4 by weighting agent 7 that is liquid or semi-solid state, to be filled dose 7 solidify after play supplemental support effect.
Claims (10)
1. the clamping device for conformal dome outside surface precision sizing, it is characterized in that: described clamping device comprises base (1), clamping matrix (3) and some osculating elements (2), base (1) is annular base, clamping matrix (3) is in tubular, one end of clamping matrix (3) is packed on the end face of base (1), the outer side wall of clamping matrix (3) is placed with some osculating elements (2) along its circumferential direction and axial matrix thereof, the outside surface of some osculating elements (2) is all on same curved surface, and the curvilinear equation of this curved surface is consistent with the curvilinear equation of the internal surface of conformal dome (6), a longitudinal groove (4-2) is formed between adjacent two row osculating elements (2), a horizontal groove (4-3) is formed between adjacent two rows' osculating element (2), between longitudinal groove (4-2) with horizontal groove (4-3), transverse and longitudinal intertexture is interconnected setting, the center through hole (4-1) of clamping matrix (3), longitudinal groove (4-2) and horizontal groove (4-3) form filler cells (4) jointly, osculating element (2) and clamping matrix (3) are fixedly mounted with and are integrated, clamping matrix (3) junction that is upper and base (1) is processed with annular recesses (5), base (1) end face is arranged on machine tool chief axis.
2. a kind of clamping device for conformal dome outside surface precision sizing according to claim 1, it is characterised in that: the contact surface profile of osculating element (2) is Polygons or circle.
3. a kind of clamping device for conformal dome outside surface precision sizing according to claim 2, it is characterised in that: the contact surface profile of osculating element (2) is rectangle, trapezoidal or trilateral.
4. a kind of clamping device for conformal dome outside surface precision sizing according to claims 1 to 3, it is characterised in that: the height of clamping matrix (3) is the 2/3��3/4 of the height of conformal dome (6).
5. a kind of clamping device for conformal dome outside surface precision sizing according to claim 4, it is characterized in that: the diameter of center through hole (4-1) is the 1/2��3/4 of conformal dome (6) maximum diameter, the groove depth scope of longitudinal groove (4-2) and horizontal groove (4-3) is 3mm��10mm.
6. a kind of clamping device for conformal dome outside surface precision sizing according to claim 1,2,3 or 5, it is characterized in that: the outer rim of base (1) is along the circumferential direction uniform is processed with multiple installation through hole (1-1), the quantity installing through hole (1-1) is 6.
7. a kind of clamping device for conformal dome outside surface precision sizing according to claim 6, it is characterised in that: the material of described clamping device is low thermal coefficient of expansion metallic substance, and the thermal expansivity of described clamping device is less than 10.
8. one kind utilizes in claim 1��7 clamping method of the clamping device for conformal dome outside surface precision sizing described in any claim, it is characterised in that the clamping method step for conformal dome outside surface precision sizing is as follows:
Step one, fixing nose cone: conformal dome (6) is directly covered on clamping matrix (3) and goes up and the internal surface of conformal dome (6) and osculating element (2) are in close contact, utilize assembly glue that conformal dome (6) opening end is mutually bonding with annular recesses (5);
Step 2, inversion are filled: be inverted after being adhesively fixed by conformal dome (6), being injected from the center through hole (4-1) of filler cells (4) by weighting agent (7) that is liquid or semi-solid state, filler cells (4) can be full of by weighting agent (7) that is liquid or semi-solid state along horizontal groove (4-3) and longitudinal groove (4-2);
Step 3, solidify after be connected and fixed: after to be filled dose (7) solidify, base (1) is connected by through hole (1-1) with machine tool chief axis through installing to adopt screw, thus realizes the processing and loading clamp of conformal dome (6).
9. the clamping method for conformal dome outside surface precision sizing according to claim 8, it is characterised in that: in step one, assembly glue is low-stress optics structure glue.
10. the clamping method for conformal dome outside surface precision sizing according to claim 8 or claim 9, it is characterised in that: weighting agent described in step 2 (7) is low melt point paraffin or gypsum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008966.0A CN105619145B (en) | 2015-12-28 | 2015-12-28 | For the precision machined clamping device in conformal dome outer surface and clamping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511008966.0A CN105619145B (en) | 2015-12-28 | 2015-12-28 | For the precision machined clamping device in conformal dome outer surface and clamping method |
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| CN105619145A true CN105619145A (en) | 2016-06-01 |
| CN105619145B CN105619145B (en) | 2017-11-03 |
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| CN201511008966.0A Active CN105619145B (en) | 2015-12-28 | 2015-12-28 | For the precision machined clamping device in conformal dome outer surface and clamping method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926006A (en) * | 2017-04-25 | 2017-07-07 | 哈尔滨工业大学 | A kind of clamping device and clamping method for the conformal head-shield Surface Machining of steepness high |
| CN107817568A (en) * | 2017-11-10 | 2018-03-20 | 哈尔滨工业大学 | The clamping device and clamping method of big L/D ratio aspherical optical element concave surface processing |
| CN109366207A (en) * | 2018-11-29 | 2019-02-22 | 上海无线电设备研究所 | The clamping device and its clamping method of the conformal optics revolving body head-shield of heavy caliber |
| CN110480453A (en) * | 2019-09-23 | 2019-11-22 | 哈尔滨工业大学 | A kind of the ultra-precision surface clamping device for processing and clamping method of big aspect ratio thin-walled tube elements |
| CN110587343A (en) * | 2019-10-08 | 2019-12-20 | 中国航空工业集团公司洛阳电光设备研究所 | Tool clamp capable of being replaced and installed quickly and using method thereof |
| CN111185865A (en) * | 2020-01-09 | 2020-05-22 | 天津爱思达航天科技有限公司 | Positioning device of fairing separation assembly support and mounting method thereof |
| CN112496806A (en) * | 2020-11-30 | 2021-03-16 | 宁波江丰电子材料股份有限公司 | Method for clamping and processing thin-wall parts |
| CN113211351A (en) * | 2021-05-14 | 2021-08-06 | 中国工程物理研究院激光聚变研究中心 | Self-adaptive flexible low-stress clamping device and clamping method for deep rise aspheric element |
| CN115041925A (en) * | 2022-06-29 | 2022-09-13 | 徐德富 | Shape-preserving processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106926006A (en) * | 2017-04-25 | 2017-07-07 | 哈尔滨工业大学 | A kind of clamping device and clamping method for the conformal head-shield Surface Machining of steepness high |
| CN106926006B (en) * | 2017-04-25 | 2019-01-18 | 哈尔滨工业大学 | A kind of clamping device and clamping method for the conformal head-shield surface processing of high steepness |
| CN107817568A (en) * | 2017-11-10 | 2018-03-20 | 哈尔滨工业大学 | The clamping device and clamping method of big L/D ratio aspherical optical element concave surface processing |
| CN109366207A (en) * | 2018-11-29 | 2019-02-22 | 上海无线电设备研究所 | The clamping device and its clamping method of the conformal optics revolving body head-shield of heavy caliber |
| CN110480453A (en) * | 2019-09-23 | 2019-11-22 | 哈尔滨工业大学 | A kind of the ultra-precision surface clamping device for processing and clamping method of big aspect ratio thin-walled tube elements |
| CN110480453B (en) * | 2019-09-23 | 2021-04-02 | 哈尔滨工业大学 | Ultra-precision surface machining clamping method for thin-walled tube element with large depth-diameter ratio |
| CN110587343A (en) * | 2019-10-08 | 2019-12-20 | 中国航空工业集团公司洛阳电光设备研究所 | Tool clamp capable of being replaced and installed quickly and using method thereof |
| CN111185865A (en) * | 2020-01-09 | 2020-05-22 | 天津爱思达航天科技有限公司 | Positioning device of fairing separation assembly support and mounting method thereof |
| CN111185865B (en) * | 2020-01-09 | 2021-09-03 | 天津爱思达航天科技有限公司 | Positioning device of fairing separation assembly support and mounting method thereof |
| CN112496806A (en) * | 2020-11-30 | 2021-03-16 | 宁波江丰电子材料股份有限公司 | Method for clamping and processing thin-wall parts |
| CN113211351A (en) * | 2021-05-14 | 2021-08-06 | 中国工程物理研究院激光聚变研究中心 | Self-adaptive flexible low-stress clamping device and clamping method for deep rise aspheric element |
| CN115041925A (en) * | 2022-06-29 | 2022-09-13 | 徐德富 | Shape-preserving processing method |
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