CN105643303A - Clamping device for precisely machining inner surface of conformal optical cowling - Google Patents
Clamping device for precisely machining inner surface of conformal optical cowling Download PDFInfo
- Publication number
- CN105643303A CN105643303A CN201610224898.XA CN201610224898A CN105643303A CN 105643303 A CN105643303 A CN 105643303A CN 201610224898 A CN201610224898 A CN 201610224898A CN 105643303 A CN105643303 A CN 105643303A
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- China
- Prior art keywords
- clamping device
- circular orientation
- cover inner
- precision machined
- conformal
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Classifications
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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
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention relates to a clamping device for precisely machining an inner surface of a conformal optical cowling, which relates to a machining clamping device, and aims at solving the problem that unpredictable total deformation can be produced because a joint surface of the existing clamping device for precisely machining the inner surface of the conformal optical cowling is in a local contact and even in a point contact, the cowling is difficult to completely fix and the machining precision is difficult to guarantee. The upper end of a basal body is provided with a flange, the lower end of the basal body is provided with a base, an inner cavity of the basal body is a curved inner cavity, the cross section of the curved inner cavity is a variable cross section which is gradually narrowed from top to bottom, a plurality of annular positioning bosses are arranged on the inner wall of the curved inner cavity, the curved radian of each annular positioning boss is consistent with that of the outer surface of the cowling, a transverse groove is formed between two adjacent annular positioning bosses, longitudinal grooves are formed in the plurality of annular positioning bosses, and a through hole which is communicated with the curved inner cavity is formed in the center of the bottom of the basal body. The clamping device is used for precisely machining the inner surface of the conformal optical cowling.
Description
Technical field
The present invention relates to a kind of machining clamping device, be specifically related to a kind of for the conformal precision machined clamping device of optical rectification cover inner surface.
Background technology
Current that the requirement of aircraft speed is more and more higher, in order to adapt to the development of high-speed aircraft, contradiction between the aerodynamic demands of balance aircraft, stealthy and optical property, conformal optical element arises at the historic moment, it may be assumed that by the optical window improving smoothly adaptive system platform exterior shape for the purpose of system air dynamic performance. The trousers that primary key element is aircraft in conformal optical element is applied, relative to conventional hemispherical trousers, conformal optical rectification cover can significantly decrease the flight resistance of aircraft, improve aircraft ambient air flow field, reduce the aero-optical effect impact on aircraft interior image quality.
The unconventional shape of conformal optical rectification cover has incomparable advantage compared with conventional hemispherical trousers, but this brings difficulty and challenge greatly also to its precision, Ultra-precision Turning. The precision of conformal optical rectification cover inner surface, Ultra-precision Turning process also exist the problems such as the degree of depth is big, steepness is high, operating force is big, workpiece is yielding. The feature of existing conformal optical rectification cover outer surface clamping device is the composition surface of fixture be ladder distribution circulus, owing to having the fixturing surface of increasing, this can guarantee that the total deformation of trousers to a certain extent, but all inevitably there is certain face type error due to trousers outer surface and clamping device, therefore the composition surface of the two is localized contact even point cantact, this can produce unpredictable total deformation, and it is difficult to being completely fixed of trousers, cause that machining accuracy is difficult to ensure that.
Summary of the invention
The present invention solves the existing conformal precision machined clamping device of optical rectification cover inner surface to be the composition surface of fixture be the circulus of ladder distribution, all inevitably there is certain face type error due to trousers outer surface and clamping device, therefore the composition surface of the two is localized contact even point cantact, this can produce unpredictable total deformation, and it is difficult to being completely fixed of trousers, cause the problem that machining accuracy is difficult to ensure that, and provide a kind of for the conformal precision machined clamping device of optical rectification cover inner surface.
The one of the present invention includes matrix for the conformal precision machined clamping device of optical rectification cover inner surface, the upper end of described matrix is provided with flange, the lower end of described matrix is provided with base, described matrix inner chamber is curved surface cavity, the cross section of curved surface cavity is the variable cross-section being from top to bottom gradually reduced, the inwall of described curved surface cavity is provided with several circular orientation boss, the curved surface radian of circular orientation boss is consistent with the curved surface radian of trousers outer surface, it is lateral trench between two adjacent circular orientation boss, several circular orientation boss are provided with longitudinal groove, the place of bottom centre of described matrix is provided with the through hole communicated with curved surface cavity.
Technical scheme has the advantages that
One, the matrix of the present invention is bowl-type structure, it is the main element of clamping device, acts primarily as supporting role, directly trousers can be put in curved surface cavity and position, owing to the flange of the present invention, matrix and base are integrated part, it is to avoid the impact on machining accuracy of the rigging error between part; The curved surface radian of circular orientation boss is consistent with the curved surface radian of trousers outer surface, therefore can realize fitting tightly of device and trousers, thus ensureing the positioning precision of trousers.
Two, the machining accuracy of trousers is had material impact by the rigidity of matrix, should first ensure that the rigidity of clip base when design, then with little quality for objective optimization size and structure. Described flange is positioned at the upper end of clamping device, is all likely to according to actual needs assemble other auxiliary device in the upper and lower surface of flange, and therefore upper and lower surface should have sufficiently high form accuracy and positional precision.
Three, described clamp base to be the base of whole clamping device be also is attached with Machinetool workpiece axle, to fixed parts, the relative lathe of fixture is made to have defined location, it directly affects the machining accuracy of trousers, and therefore, the flatness of the fitting surface of base is less than 0.005mm.
Four, the effect of described flange is the function of extension clamping device, can assemble the auxiliary device such as feeler block, trimming wheel, this machining accuracy that can fully ensure that trousers and working (machining) efficiency herein above.
Five, present invention achieves the precision machined accurate clamping of conformal optical rectification cover inner surface, high accuracy when can effectively meet trousers clamping, the requirement of low stress, the machining accuracy improving conformal optical rectification cover is had important function.
Accompanying drawing explanation
The axle that Fig. 1 is the present invention surveys profile;
Fig. 2 is the elevation cross-sectional view of the present invention;
Fig. 3 is the top view of Fig. 2;
Fig. 4 is the A-A sectional view of Fig. 2;
Fig. 5 is the I partial enlarged drawing of Fig. 1;
Fig. 6 is II partial enlarged drawing of Fig. 1.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described in conjunction with Fig. 1��Fig. 6, present embodiment includes matrix 2, the upper end of described matrix 2 is provided with flange 3, the lower end of described matrix 2 is provided with base 1, described matrix 2 inner chamber is curved surface cavity M, the cross section of curved surface cavity M is the variable cross-section being from top to bottom gradually reduced, the inwall of described curved surface cavity M is provided with several circular orientation boss 4, the curved surface radian of circular orientation boss 4 is consistent with the curved surface radian of trousers outer surface, it is lateral trench 5 between two adjacent circular orientation boss 4, several circular orientation boss 4 are provided with longitudinal groove 6, the place of bottom centre of described matrix 2 is provided with the through hole 7 communicated with curved surface cavity M, through hole 7 avoids the position error caused because of scale error and the face shape error on trousers top, and the diameter of through hole 7 and highly determine the area of nethermost setting element 4.The size of lateral trench 5 and longitudinal groove 6 determines quantity and the surface area of circular orientation boss 4, and the surface area of several circular orientation boss 4 is identical and is evenly distributed. The surface area of circular orientation boss 4 is the important feature affecting trousers crudy. The curved surface quantity of circular orientation boss 4 and size affect stress raisers and the machining accuracy of trousers; The fitting surface 1-2 of base 1 should have higher flatness, and flatness is less than 0.005mm.
Detailed description of the invention two: present embodiment is described in conjunction with Fig. 5, the height h of the circular orientation boss 4 of present embodiment is 20mm��100mm, and the thickness s of circular orientation boss 4 is 3mm��50mm. The size of circular orientation boss 4 is the key factor affecting trousers total deformation and stress raisers size, should be designed by theory analysis and simulation calculation. Other composition and annexation and detailed description of the invention one identical.
Detailed description of the invention three: present embodiment is described in conjunction with Fig. 5, the height h of the circular orientation boss 4 of present embodiment is 50mm, and the thickness s of described circular orientation boss 4 is 10mm. The size of circular orientation boss 4 is the key factor affecting trousers total deformation and stress raisers size, should be designed by theory analysis and simulation calculation. Other composition and annexation and detailed description of the invention two identical.
Detailed description of the invention four: present embodiment is described in conjunction with Fig. 6, the degree of depth of the lateral trench 5 of present embodiment is equal with the thickness s of circular orientation boss 4, and the degree of depth t of longitudinal groove 6 is 2mm��10mm, and the width d of longitudinal groove 6 is 5mm��20mm. Other composition and annexation and detailed description of the invention three identical.
Detailed description of the invention five: present embodiment is described in conjunction with Fig. 6, the degree of depth t of the longitudinal groove 6 of present embodiment is 5mm, and the width d of longitudinal groove 6 is 10mm. Other composition and annexation and detailed description of the invention four identical.
Detailed description of the invention six: present embodiment is described in conjunction with Fig. 1 and Fig. 2, diameter is trousers outside diameter the 1/6��1/10 of the through hole 7 of present embodiment. Other composition and annexation and detailed description of the invention one identical.
Detailed description of the invention seven: present embodiment is described in conjunction with Fig. 1 and Fig. 2, diameter is trousers outside diameter the 1/8 of the through hole 7 of present embodiment. Other composition and annexation and detailed description of the invention six identical.
Detailed description of the invention eight: present embodiment is described in conjunction with Fig. 4, the base 1 of present embodiment is provided with several platform connecting hole 1-1 along same circumference uniform distribution. So arrange can pass through screw directly by clamping device to fixed and be connected on Machinetool workpiece axle, thus realizing the installation of clamping device. Other composition and annexation and detailed description of the invention one identical.
Detailed description of the invention nine: present embodiment is described in conjunction with Fig. 3, the flange 3 of present embodiment is provided with several upper connecting hole 3-3 along same circumference uniform distribution. Auxiliary device (feeler block, trimming wheel) etc. is through connecting hole 3-3 and is connected on this clamping device. Other composition and annexation and detailed description of the invention one or eight identical.
Detailed description of the invention ten: present embodiment is described in conjunction with Fig. 1, the material of the matrix 2 of present embodiment is aluminium alloy. This material thermal coefficient of expansion and density are little. Other composition and annexation and detailed description of the invention nine identical.
Claims (10)
1. one kind is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterized in that: described clamping device includes matrix (2), the upper end of described matrix (2) is provided with flange (3), the lower end of described matrix (2) is provided with base (1), described matrix (2) inner chamber is curved surface cavity (M), the cross section of curved surface cavity (M) is the variable cross-section being from top to bottom gradually reduced, the inwall of described curved surface cavity (M) is provided with several circular orientation boss (4), the curved surface radian of circular orientation boss (4) is consistent with the curved surface radian of trousers outer surface, it is lateral trench (5) between two adjacent circular orientation boss (4), several circular orientation boss (4) are provided with longitudinal groove (6), the place of bottom centre of described matrix (2) is provided with the through hole (7) communicated with curved surface cavity (M).
2. one according to claim 1 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterized in that: the height (h) of described circular orientation boss (4) is 20mm��100mm, the thickness (s) of described circular orientation boss (4) is 3mm��50mm.
3. one according to claim 2 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterized in that: the height (h) of described circular orientation boss (4) is 50mm, the thickness (s) of described circular orientation boss (4) is 10mm.
4. one according to claim 1 and 2 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterized in that: the degree of depth of described lateral trench (5) is equal with the thickness (s) of circular orientation boss (4), the degree of depth (t) of longitudinal groove (6) is 2mm��10mm, and the width (d) of longitudinal groove (6) is 5mm��20mm.
5. one according to claim 4 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterized in that: the degree of depth (t) of described longitudinal groove (6) is 5mm, the width (d) of longitudinal groove (6) is 10mm.
6. one according to claim 1 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterised in that: diameter is trousers outside diameter the 1/6��1/10 of described through hole (7).
7. one according to claim 6 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterised in that: diameter is trousers outside diameter the 1/8 of described through hole (7).
8. one according to claim 1 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterised in that: described base (1) is provided with several platform connecting hole (1-1) along same circumference uniform distribution.
9. the one according to claim 1 or 8 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterised in that: described flange (3) is provided with several upper connecting hole (3-1) along same circumference uniform distribution.
10. one according to claim 9 is used for the conformal precision machined clamping device of optical rectification cover inner surface, it is characterised in that: the material of matrix (2) is aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224898.XA CN105643303B (en) | 2016-04-12 | 2016-04-12 | One kind is used for the conformal precision machined clamping device of optical rectification cover inner surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610224898.XA CN105643303B (en) | 2016-04-12 | 2016-04-12 | One kind is used for the conformal precision machined clamping device of optical rectification cover inner surface |
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| CN105643303A true CN105643303A (en) | 2016-06-08 |
| CN105643303B CN105643303B (en) | 2018-02-02 |
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Cited By (8)
| 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 |
| CN108044129A (en) * | 2017-12-06 | 2018-05-18 | 中国人民解放军国防科技大学 | Ultra-precise turning method for high-gradient inner-outer cavity conformal optical element |
| CN109202628A (en) * | 2018-08-23 | 2019-01-15 | 盐城加申汽车制动部件有限公司 | A kind of inner arc grinding attachment for preventing brake block liner from deforming |
| 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 |
| CN110281047A (en) * | 2019-05-30 | 2019-09-27 | 武汉船用机械有限责任公司 | The processing tool and processing method of the pod of full-rotating rudder paddle |
| 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 |
| CN115041925A (en) * | 2022-06-29 | 2022-09-13 | 徐德富 | Shape-preserving processing method |
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| US20060225265A1 (en) * | 2005-03-29 | 2006-10-12 | The Boeing Company | Mandrel, mandrel removal and mandrel fabrication to support a monolithic nacelle composite panel |
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Cited By (10)
| 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 |
| 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 |
| CN108044129A (en) * | 2017-12-06 | 2018-05-18 | 中国人民解放军国防科技大学 | Ultra-precise turning method for high-gradient inner-outer cavity conformal optical element |
| CN109202628A (en) * | 2018-08-23 | 2019-01-15 | 盐城加申汽车制动部件有限公司 | A kind of inner arc grinding attachment for preventing brake block liner from deforming |
| 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 |
| CN110281047A (en) * | 2019-05-30 | 2019-09-27 | 武汉船用机械有限责任公司 | The processing tool and processing method of the pod of full-rotating rudder paddle |
| 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 |
| CN115041925A (en) * | 2022-06-29 | 2022-09-13 | 徐德富 | Shape-preserving processing method |
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