CN105397533B - Square box structure for turbine blade processing - Google Patents
Square box structure for turbine blade processing Download PDFInfo
- Publication number
- CN105397533B CN105397533B CN201510987139.4A CN201510987139A CN105397533B CN 105397533 B CN105397533 B CN 105397533B CN 201510987139 A CN201510987139 A CN 201510987139A CN 105397533 B CN105397533 B CN 105397533B
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- China
- Prior art keywords
- blade
- square chest
- cavity surface
- square
- cavity block
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Classifications
-
- 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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/086—Work-clamping means other than mechanically-actuated using a solidifying liquid, e.g. with freezing, setting or hardening means
-
- 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
Abstract
The present invention be used for turbine blade processing square box structure, its can solve the problems, such as existing square chest inner chamber because between blade space it is uneven cause sn-bi alloy became uneven, thermal expansion ratio difference, so as to effectively reduce deformable blade, ensure blade root machining precision.It includes square chest casing, square chest casing is provided with inner cavity surface, blade clamping position is arranged in inner cavity surface during blade clamping, and the space between blade clamping position and inner cavity surface is integral so as to which blade be combined with square chest casing by sn-bi alloy filling cast, it is characterised in that：The inner cavity surface of square chest casing is the normal direction enveloping surface of the machined surface profile at blade clamping position, the thickness for the sn-bi alloy that the envelope amount of normal direction enveloping surface needs to pour into a mould for blade in square chest.
Description
Technical field
The present invention relates to the frock clamp field of turbine blade processing, particularly for the square chest knot of turbine blade processing
Structure.
Background technology
In the processing of medium-and-large-sized turbine blade, because blade profile complexity is difficult to positioning, it is necessary to which blade is put into square chest
In, blade and square chest are freezing together by pouring into a mould sn-bi alloy, square chest can serve as pallet together with blade on
Lathe, thus positioning datum is changed to the orthogonal two sides of square chest by blade profile, be easy to be determined when processing blade root
Position.
The inner chamber A of presently used square chest is perpendicular to the contoured surface B of square chest end face（See Fig. 1）, blade typically have integral shroud,
The parts such as boss, in order to which blade is put in position through square chest, also for adapting to blade of different shapes, square chest
Inner chamber is all designed bigger, and it is very big that this results in the sn-bi alloy dosage full of whole inner chamber；And due to sn-bi alloy
Density is much larger than the density of common metal, and sn-bi alloy dosage means that greatly the weight of whole fixture is heavier, and lathe is born
Lotus is also just bigger；Again because the inner chamber of square chest is big compared with blade profile, after blade puts square chest into, the space between blade and square chest
It is just very uneven, blade profile often or distortion, so as to not causing the space from the front end face of square chest to rear end face also not
Uniformly, that is to say, that it is all uneven in the space of horizontal and vertical both direction, cause the sn-bi alloy some places of cast thin,
Some places are thick, and sn-bi alloy can expand during cooling, and became uneven is even, and thermal expansion ratio is just uneven, causes blade to become
Shape so that the relative position of blade and square chest produces skew, the final machining accuracy for influenceing blade root.
The content of the invention
In view of the above-mentioned problems, the present invention be used for turbine blade processing square box structure, its can solve existing square chest inner chamber because
Between blade space it is uneven and the problem of cause sn-bi alloy became uneven, thermal expansion ratio difference, so as to effectively reduce blade
Deformation, ensure blade root machining precision.
For the square box structure of turbine blade processing, it includes square chest casing, and the square chest casing is provided with inner cavity surface, blade
Blade clamping position is arranged in the inner cavity surface during clamping, the space between the blade clamping position and the inner cavity surface by
Sn-bi alloy filling cast is integral so as to which blade be combined with square chest casing, it is characterised in that：The inner chamber of the square chest casing
Face is the normal direction enveloping surface of the machined surface profile at blade clamping position, and the envelope amount of the normal direction enveloping surface is blade in square chest domestic demand
The thickness of the sn-bi alloy to be poured into a mould.
Further, the square chest casing includes upper box and lower box, and the upper box includes upper end cover and upper impression
Block, the lower box include lower bottom base and mo(u)ld bottom half cavity block, and the upper end cover is fastened and is installed on the lower bottom base, the upper end cover
Inner side mo(u)ld top half cavity block is installed, mo(u)ld bottom half cavity block is installed on the inside of the lower bottom base, the interior cavity surface of the mo(u)ld top half cavity block, under
The interior cavity surface split of die cavity block forms the inner cavity surface of the square chest casing.
Further, positioning is respectively passed through between the mo(u)ld top half cavity block and upper end cover, between mo(u)ld bottom half cavity block and lower bottom base
Keyway, mode connects for screw installation are integral.
Further, the both ends of the upper end cover are provided with tenon, and the supported on both sides wall of the lower bottom base is provided with tenon tooth, institute
The tenon cooperation for stating upper end cover is installed in the tenon tooth on the lower bottom base, and passes through work between the upper end cover and lower bottom base
Save screw bolt and nut fastening.
Further, end face locating piece, the upper surface of the end face locating piece are installed on the front end side of the lower bottom base
Protrude from the top surface of the supported on both sides wall of the lower bottom base.
Further, band groove is respectively equipped with the interior cavity surface of the upper and lower die cavity block of the interior cavity surface of the mo(u)ld top half cavity block
Semicircle sprue gate, the semicircle, which pours, intraoral is additionally provided with triangle stress groove.
Further, the interior cavity surface of the mo(u)ld top half cavity block, the design method of the interior cavity surface of mo(u)ld bottom half cavity block, according to technique
Need first to determine position of the blade in square chest, then correspond to when blade is arranged in square chest the front end face of square chest, rear end face and
Center section abreast, equidistantly intercept blade on three at molded line；Predetermined blade surrounding is needed to wrap up the conjunction of tin bismuth
Normal direction envelope amount of the thickness of gold as blade profile, three molded line of normal bias interception；It is again that the molded line after biasing is reasonable
Be divided into Cavity Line up and down, ensure the upper and lower Cavity Line divided without barb, then by the method for curve group respectively by upper and lower three
Bar Cavity Line is linked to be so as to form the interior cavity surface of the mo(u)ld top half cavity block, the interior cavity surface of mo(u)ld bottom half cavity block.
The beneficial effects of the present invention are：The inner cavity surface of square chest casing is according to the predetermined tin of blade profile profile normal bias
The normal direction enveloping surface that the envelope amount of bismuth alloy thickness is formed, thus after blade is put into square chest inner chamber, square chest inner cavity surface and blade
Surrounding forms uniform space, and the tin bismuth gold thickness so poured into a mould in space is uniform, and dosage is few, in light weight, can be effective
Mitigate lathe load；Meanwhile square chest inner cavity surface and the surrounding of blade keep uniform space, can keep identical thermal expansion ratio,
Deformable blade is prevented, ensures positioning precision；The split modular structure that square chest casing is fastened by upper end cover, lower bottom base, upper end cover
It is connected between lower bottom base by eyelet bolt, nut, can passes through movable joint in deformation caused by sn-bi alloy cooling expansion
Bolt is transferred to upper box, so as to mitigate the deformation of lower box, ensures positioning precision of the blade relative to square chest bottom surface；And by
It is fabricated structure in square chest casing, upper end cover and lower bottom base are general, can be applied to different blades, according to be processed
The different of blade profile only need to change corresponding mo(u)ld top half cavity block and mo(u)ld bottom half cavity block can, greatly save cost；Band groove
Sprue gate be easy to pour into a mould sn-bi alloy, stress groove makes to break into pieces the work of alloy after machining more easily and effectively, thus not
Low-melting alloy can be only poured into a mould, frangible low-melting alloy can also be poured into a mould.
Brief description of the drawings
Fig. 1 is the schematic diagram for the square box structure for being currently used for turbine blade processing；
Fig. 2 is the main structure diagram of the square box structure for being used for turbine blade processing of the embodiment of the present invention；
Fig. 3 is Fig. 2 overlooking the structure diagram；
Fig. 4 is the stereochemical structure signal of the upper box of the square box structure for being used for turbine blade processing of the embodiment of the present invention
Figure；
Fig. 5 is the stereochemical structure signal of the lower box of the square box structure for being used for turbine blade processing of the embodiment of the present invention
Figure；
Fig. 6 is that cavity surface design method lobular line intercepts schematic diagram in square chest of the embodiment of the present invention；
Fig. 7 is that upper and lower die cavity splits schematic diagram in cavity surface design method in square chest of the embodiment of the present invention；
Fig. 8 is the schematic diagram that blade is placed in square chest in the embodiment of the present invention.
Reference：10- square chest casings；11- inner cavity surfaces；12- upper boxes；121- upper end covers；1211- tenons；On 122-
Die cavity block；The interior cavity surface of 1221- mo(u)ld top half cavity blocks；13- lower boxes；131- lower bottom bases；1311- tenon tooths；132- mo(u)ld bottom half cavity blocks；
The interior cavity surface of 1321- mo(u)ld top half cavity blocks；133- end faces locating piece；14- keyway arrangements；15- socket cap screws；16- lives
Save bolt；17- band shoulder hex nuts；18- semicircles sprue gate；19- triangle stress grooves；20- blades；21- front end face molded line；
22- centers molded line；23- rear end face molded line；24- blade profile molded line；The cut section of the upper and lower Cavity Lines of 25-；30- lifting bolts.
Embodiment
See Fig. 2, Fig. 3, the present invention is used for the square box structure of turbine blade processing, and it includes square chest casing 10, square chest casing
10 are provided with inner cavity surface 11, and blade clamping position is arranged in inner cavity surface 11 during 20 clamping of blade, blade clamping position and inner cavity surface
Space between 11 is by sn-bi alloy filling cast so that blade is combined into integral, the inner chamber of square chest casing 10 with square chest casing
Face 11 is the normal direction enveloping surface of the machined surface profile at blade clamping position, and the envelope amount of normal direction enveloping surface is that blade needs in square chest
The thickness of the sn-bi alloy of cast.
See Fig. 2~Fig. 5, square chest casing 10 includes upper box 12 and lower box 13, and upper box 12 includes upper end cover 121 and upper
Die cavity block 122, lower box 13 include lower bottom base 131 and mo(u)ld bottom half cavity block 132, between mo(u)ld top half cavity block 122 and upper end cover 121, mo(u)ld bottom half
Between cavity block 132 and lower bottom base 131 respectively by positioning spline structure 14, socket cap screw 15 connection be mounted to it is whole
Body；Upper end cover 121 is fastened and is installed on lower bottom base 131, and the both ends of upper end cover 121 are provided with tenon 1211, and the two of lower bottom base are collateral
Support wall is provided with tenon tooth 1311, and the tenon 1211 of upper end cover, which coordinates, to be installed in the tenon tooth 1311 on lower bottom base, and upper end cover
Fastened between 121 and lower bottom base 131 by eyelet bolt 16 and with shoulder hex nut 17, the interior cavity surface of mo(u)ld top half cavity block 122
1221st, the split of interior cavity surface 1321 of mo(u)ld bottom half cavity block 132 forms the inner cavity surface 11 of square chest casing；The front end side of lower bottom base 131
Upper installation end face locating piece 133, the upper surface of end face locating piece 133 protrudes from the top surface of the supported on both sides wall of lower bottom base 131；Its
The horizontal left and right positioning of tenon structure control upper box 12, lower box 13 on middle upper end cover 121 and lower bottom base 131, end face are fixed
Position block 133 controls horizontal front and rear positioning between upper box 12, lower box 13.The 1221 upper and lower type of interior cavity surface of mo(u)ld top half cavity block 132
The semicircle sprue gate 18 with groove is respectively equipped with the interior cavity surface 1321 of cavity block 132, semicircle pours to be additionally provided with mouth 18
Triangle stress groove 19.
The design method of the interior cavity surface of mo(u)ld top half cavity block, the interior cavity surface of mo(u)ld bottom half cavity block, needed first to determine leaf according to technique
Position of the piece in square chest, then correspond to when blade is arranged in square chest square chest front end face, rear end face it is parallel with center section
Ground, equidistantly intercept blade on three at molded line 21,23,22, see Fig. 6；Predetermined blade surrounding is needed to wrap up tin bismuth
Normal direction envelope amount of the thickness of alloy as blade profile, three molded line of normal bias interception；The molded line after biasing is closed again
Reason is divided into upper and lower Cavity Line, and 25 be the cut section of upper and lower Cavity Line, sees Fig. 7, and the upper and lower Cavity Line for ensureing to divide is without
Hook, otherwise, upper box can not separate with lower box after pouring into a mould tin bismuth；Again by the method for curve group respectively by upper and lower three stripe shape
Chamber line is linked to be so as to form the interior cavity surface 1221 of mo(u)ld top half cavity block, the interior cavity surface 1321 of mo(u)ld bottom half cavity block.
Claims (6)
1. for the square box structure of turbine blade processing, it includes square chest casing, and the square chest casing is provided with inner cavity surface, blade dress
Blade clamping position is arranged in the inner cavity surface during folder, and the space between the blade clamping position and the inner cavity surface is by tin
Bismuth alloy filling cast is integral so as to which blade be combined with square chest casing, it is characterised in that：The inner cavity surface of the square chest casing
For the normal direction enveloping surface of the machined surface profile at blade clamping position, the envelope amount of the normal direction enveloping surface needs for blade in square chest
The thickness of the sn-bi alloy of cast；The square chest casing includes upper box and lower box, and the upper box includes upper end cover and upper
Die cavity block, the lower box include lower bottom base and mo(u)ld bottom half cavity block, and the upper end cover is fastened and is installed on the lower bottom base, it is described on
Mo(u)ld top half cavity block is installed on the inside of end cap, mo(u)ld bottom half cavity block, the interior die cavity of the mo(u)ld top half cavity block are installed on the inside of the lower bottom base
The interior cavity surface split in face, mo(u)ld bottom half cavity block forms the inner cavity surface of the square chest casing.
2. the square box structure according to claim 1 for turbine blade processing, it is characterised in that：The mo(u)ld top half cavity block with
Between upper end cover, between mo(u)ld bottom half cavity block and lower bottom base respectively by positioning spline, mode connects for screw install it is integral.
3. the square box structure according to claim 1 for turbine blade processing, it is characterised in that：The two of the upper end cover
End is provided with tenon, and the supported on both sides wall of the lower bottom base is provided with tenon tooth, the tenon cooperation of the upper end cover be installed on it is described under
In tenon tooth on base, and fastened between the upper end cover and lower bottom base by eyelet bolt and nut.
4. the square box structure according to claim 1 for turbine blade processing, it is characterised in that：Before the lower bottom base
End face locating piece is installed, the upper surface of the end face locating piece protrudes from the top of the supported on both sides wall of the lower bottom base in end side surface
Face.
5. the square box structure according to claim 1 for turbine blade processing, it is characterised in that：The mo(u)ld top half cavity block
The semicircle sprue gate with groove is respectively equipped with the interior cavity surface of the interior upper and lower die cavity block of cavity surface, the semicircle pours mouth
Inside it is additionally provided with triangle stress groove.
6. the square box structure for being used for turbine blade processing described in claim 1, interior cavity surface, the lower impressions of the mo(u)ld top half cavity block
The design method of the interior cavity surface of block, it is characterised in that：Needed first to determine position of the blade in square chest according to technique, then in leaf
Piece be arranged at the front end face that square chest is corresponded to when in square chest, rear end face and center section abreast, equidistantly intercept blade on three
Locate molded line；The thickness that predetermined blade surrounding is needed to wrap up sn-bi alloy is as the normal direction envelope amount of blade profile, method
To three molded line of biasing interception；The molded line after biasing is reasonably divided into Cavity Line up and down again, ensures the upper and lower die cavity divided
Upper and lower three Cavity Lines are linked to be so as to be formed in the mo(u)ld top half cavity block by line respectively without barb, then by the method for curve group
Cavity surface, the interior cavity surface of mo(u)ld bottom half cavity block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510987139.4A CN105397533B (en) | 2015-12-27 | 2015-12-27 | Square box structure for turbine blade processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510987139.4A CN105397533B (en) | 2015-12-27 | 2015-12-27 | Square box structure for turbine blade processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105397533A CN105397533A (en) | 2016-03-16 |
| CN105397533B true CN105397533B (en) | 2018-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510987139.4A Active CN105397533B (en) | 2015-12-27 | 2015-12-27 | Square box structure for turbine blade processing |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002619B (en) * | 2016-06-23 | 2018-09-28 | 重庆江增船舶重工有限公司 | Turbo blade tenon tooth processes blade locking device |
| CN106181468B (en) * | 2016-07-27 | 2019-01-04 | 西北工业大学 | A kind of precision forged blade tenon root and front and rear edge clamp for machining |
| CN111136510B (en) * | 2019-12-25 | 2021-09-10 | 贵阳航发精密铸造有限公司 | Datum conversion machining method and conversion tool for turbine guide blade with complex profile |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007061542A1 (en) * | 2007-12-20 | 2009-06-25 | Werkzeugmaschinenfabrik Adolf Waldrich Coburg Gmbh & Co. Kg | Kaplan turbine blade machining method for e.g. 3-4 axis gantry machine, involves machining blade pivot and blade hub in one machining step, and accommodating and centering blade at blade pivot in subsequent machining steps |
| CN101791765B (en) * | 2010-01-15 | 2011-12-14 | 无锡市艾尔福叶片有限公司 | Universal hold-down mechanism of steam turbine blade drill jig |
| EP2682832A1 (en) * | 2012-07-04 | 2014-01-08 | Siemens Aktiengesellschaft | Clamp fixture for clamping turbine blades and method for producing the clamp |
| CN103111877B (en) * | 2012-12-28 | 2017-04-26 | 杨鸿耀 | Stacking shaft positioning method and device of vane molded surface |
| CN104057063B (en) * | 2014-05-23 | 2015-12-23 | 西安西航集团莱特航空制造技术有限公司 | A kind of low-melting alloy casting fixture of processing thin-walled part and using method thereof |
| CN205290466U (en) * | 2015-12-27 | 2016-06-08 | 无锡透平叶片有限公司 | A square chest structure for turbine blade processing |
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| CN105397533A (en) | 2016-03-16 |
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