CN105397533A - Square box structure for processing turbine blade - Google Patents
Square box structure for processing turbine blade Download PDFInfo
- Publication number
- CN105397533A CN105397533A CN201510987139.4A CN201510987139A CN105397533A CN 105397533 A CN105397533 A CN 105397533A CN 201510987139 A CN201510987139 A CN 201510987139A CN 105397533 A CN105397533 A CN 105397533A
- Authority
- CN
- China
- Prior art keywords
- blade
- cavity surface
- block
- square chest
- square box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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 invention discloses a square box structure for processing a turbine blade and aims to solve the problems about uneven thickness of tin-bismuth alloy and different thermal expansion rates caused by uneven gap between an inner cavity of a square box and the blade, thereby effectively reducing deformation of the blade and ensuring the processing accuracy of a blade root. The square box structure comprises a square box body, wherein an inner cavity surface is arranged on the square box body; a blade clamping part is arranged in the inner cavity surface when the blade is clamped; and a gap between the blade clamping part and the inner cavity surface is filled and poured with the tin-bismuth alloy to ensure that the blade and the square box body are combined to form a whole body. The square box structure is characterized in that the inner cavity surface of the square box body is a normal envelope surface of a profile contour of the blade clamping part; and the enveloping quantity of the normal envelope surface is the thickness of the tin-bismuth alloy needed for pouring when the blade is arranged in the square box.
Description
Technical field
The present invention relates to the frock clamp field of turbine blade processing, be specially the square box structure for turbine blade processing.
background technology
In the processing of medium-and-large-sized turbine blade, because blade profile complexity is difficult to location, blade is needed to put into square chest, together with by cast sn-bi alloy blade being set in square chest, square chest just can as pallet upper lathe together with blade, so just positioning datum is converted to the orthogonal two sides of square chest by blade profile, positions when being convenient to processing blade root.
The contoured surface B(that the inner chamber A of current square chest used is perpendicular to square chest end face is shown in Fig. 1), blade generally has the parts such as integral shroud, boss, in order to can blade be put in position through square chest, also in order to adapt to difform blade, it is larger that the inner chamber of square chest all designs, and this just causes the sn-bi alloy consumption being full of whole inner chamber very large, and because the density of sn-bi alloy is much larger than the density of common metal, sn-bi alloy consumption greatly just means that the weight ratio of whole fixture is heavier, the load of lathe is also just larger, inner chamber again due to square chest is large compared with blade profile, after blade puts square chest into, space between blade and square chest is just very uneven, blade profile often or distortion, thus cause the space from the front end face of square chest to rear end face also uneven, that 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, sn-bi alloy can expand in the process of cooling, became uneven is even, thermal expansion ratio is just uneven, cause deformable blade, the relative position of blade and square chest is produced offset, the final machining accuracy affecting blade root.
Summary of the invention
For the problems referred to above, the present invention is used for the square box structure of turbine blade processing, it can solve existing square chest inner chamber and cause because of uneven from space between blade the problem that sn-bi alloy became uneven, thermal expansion ratio are different, thus effectively reduces deformable blade, guarantee blade root machining precision.
For the square box structure of turbine blade processing, it comprises square chest casing, described square chest casing is provided with inner cavity surface, during blade clamping, blade clamping position is arranged in described inner cavity surface, space between described blade clamping position and described inner cavity surface is filled by sn-bi alloy and is poured into a mould thus blade and square chest casing are combined into entirety, it is characterized in that: the inner cavity surface of described square chest casing is the normal direction enveloping surface of the machined surface profile at blade clamping position, the envelope amount of described normal direction enveloping surface is the thickness that blade needs the sn-bi alloy poured into a mould in square chest.
Further, described square chest casing comprises upper box and lower box, described upper box comprises upper end cover and upper impression block, described lower box comprises lower bottom base and lower impressions block, described upper end cover fastens and is installed on described lower bottom base, the inner side of described upper end cover is provided with upper impression block, and the inner side of described lower bottom base is provided with lower impressions block, and the interior cavity surface of described upper impression block, the interior cavity surface split of lower impressions block form the inner cavity surface of described square chest casing.
Further, between described upper impression block and upper end cover, be connected and installed integrally by positioning spline, screw respectively between lower impressions block and lower bottom base.
Further, the two ends of described upper end cover are provided with tenon, the supported on both sides wall of described lower bottom base is provided with tenon tooth, and the tenon cooperation of described upper end cover is installed in the tenon tooth on described lower bottom base, and by eyelet bolt and fastening nuts between described upper end cover and lower bottom base.
Further, end face locating piece is installed in the side, front end of described lower bottom base, the upper surface of described end face locating piece protrudes from the end face of the supported on both sides wall of described lower bottom base.
Further, the interior cavity surface of the interior cavity surface upper and lower die cavity block of described upper impression block is respectively equipped with the semicircle sprue gate of band groove, described semicircle is built in mouth and is also provided with triangle stress groove.
Further, the method for designing of the interior cavity surface of described upper impression block, the interior cavity surface of lower impressions block, need first to determine the position of blade in square chest according to technique, then the front end face of corresponding square chest, rear end face and mid portion abreast, equidistantly intercept three place's molded line on blade when blade is arranged in square chest; Predetermined blade surrounding is needed the normal direction envelope amount of thickness as blade profile of parcel sn-bi alloy, three molded line that normal bias intercepts; Again the molded line after biased is reasonably divided into upper and lower Cavity Line, ensure the upper and lower Cavity Line of dividing without barb, more respectively upper and lower three Cavity Line be linked to be by the method for curve group thus form in described upper impression block cavity surface in cavity surface, lower impressions block.
Beneficial effect of the present invention is: the inner cavity surface of square chest casing is the normal direction enveloping surface formed according to the envelope amount of the predetermined sn-bi alloy thickness of blade profile profile normal bias, thus after blade puts into square chest inner chamber, square chest inner cavity surface and blade surrounding form uniform space, the tin bismuth gold thickness of pouring into a mould in space is like this even, consumption is few, lightweight, can effectively alleviate lathe load; Meanwhile, the surrounding of square chest inner cavity surface and blade keeps uniform space, can keep identical thermal expansion ratio, prevent deformable blade, ensures positioning precision; The split modular structure that square chest casing is fastened by upper end cover, lower bottom base, be connected by eyelet bolt, nut between upper end cover with lower bottom base, the distortion produced when sn-bi alloy cooling is expanded can be passed to upper box by eyelet bolt, thus alleviate the distortion of lower box, ensure the positioning precision of blade relative to square chest bottom surface; And because square chest casing is fabricated structure, upper end cover and lower bottom base are general, can be applicable to different blades, only need change corresponding upper impression block and lower impressions block according to the difference of blade profile to be processed just passable, greatly provide cost savings; Sprue gate with groove is convenient to pour into a mould sn-bi alloy, and the work breaking alloy after stress groove makes to machine into pieces is effectively convenient, thus not only can pour into a mould low-melting alloy, also can pour into a mould frangible low-melting alloy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the existing square box structure for turbine blade processing;
Fig. 2 is the main TV structure schematic diagram of the square box structure for turbine blade processing of the embodiment of the present invention;
Fig. 3 is the plan structure schematic diagram of Fig. 2;
Fig. 4 is the perspective view of the upper box of the square box structure for turbine blade processing of the embodiment of the present invention;
Fig. 5 is the perspective view of the lower box of the square box structure for turbine blade processing of the embodiment of the present invention;
Fig. 6 is that in embodiment of the present invention square chest, cavity surface method for designing Leaf molded line intercepts schematic diagram;
Fig. 7 is that in embodiment of the present invention square chest, in cavity surface method for designing, upper and lower die cavity splits schematic diagram;
Fig. 8 is the schematic diagram be placed in by blade in the embodiment of the present invention in square chest.
Reference numeral: 10-square chest casing; 11-inner cavity surface; 12-upper box; 121-upper end cover; 1211-tenon; 122-upper impression block; The interior cavity surface of 1221-upper impression block; 13-lower box; 131-lower bottom base; 1311-tenon tooth; 132-lower impressions block; The interior cavity surface of 1321-upper impression block; 133-end face locating piece; 14-keyway arrangements; 15-socket cap screw; 16-eyelet bolt; 17-band shoulder hex nut; The semicircle sprue gate of 18-; 19-triangle stress groove; 20-blade; 21-front end face molded line; 22-central authorities molded line; 23-rear end face molded line; 24-blade profile molded line; The cut section of the upper and lower Cavity Line of 25-; 30-lifting bolt.
Detailed description of the invention
See Fig. 2, Fig. 3, the present invention is used for the square box structure of turbine blade processing, it comprises square chest casing 10, square chest casing 10 is provided with inner cavity surface 11, during blade 20 clamping, blade clamping position is arranged in inner cavity surface 11, space between blade clamping position and inner cavity surface 11 is filled by sn-bi alloy and is poured into a mould thus blade and square chest casing are combined into entirety, the inner cavity surface 11 of square chest casing 10 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 the thickness that blade needs the sn-bi alloy poured into a mould in square chest.
See Fig. 2 ~ Fig. 5, square chest casing 10 comprises upper box 12 and lower box 13, upper box 12 comprises upper end cover 121 and upper impression block 122, lower box 13 comprises lower bottom base 131 and lower impressions block 132, is connected and installed integrally respectively between upper impression block 122 and upper end cover 121, between lower impressions block 132 and lower bottom base 131 by positioning spline structure 14, socket cap screw 15; Upper end cover 121 fastens and is installed on lower bottom base 131, the two ends of upper end cover 121 are provided with tenon 1211, the supported on both sides wall of lower bottom base is provided with tenon tooth 1311, tenon 1211 cooperation of upper end cover is installed in the tenon tooth 1311 on lower bottom base, and by eyelet bolt 16 be with that to take on hex nut 17 fastening, the inner cavity surface 11 of the interior cavity surface 1221 of upper impression block 122, the interior cavity surface 1321 split formation square chest casing of lower impressions block 132 between upper end cover 121 and lower bottom base 131; End face locating piece 133 is installed in the side, front end of lower bottom base 131, and the upper surface of end face locating piece 133 protrudes from the end face of the supported on both sides wall of lower bottom base 131; Tenon structure wherein on upper end cover 121 and lower bottom base 131 is located about controlling the level of upper box 12, lower box 13, and end face locating piece 133 controls to locate before and after level between upper box 12, lower box 13.The interior cavity surface 1321 of the interior cavity surface 1221 upper and lower die cavity block 132 of upper impression block 132 is respectively equipped with the semicircle sprue gate 18 of band groove, semicircle is built in mouth 18 and is also provided with triangle stress groove 19.
The method for designing of the interior cavity surface of upper impression block, the interior cavity surface of lower impressions block, need first to determine the position of blade in square chest according to technique, when blade is arranged in square chest, the front end face of corresponding square chest, rear end face and mid portion abreast, equidistantly intercept three place's molded line 21,23,22 on blade again, see Fig. 6; Predetermined blade surrounding is needed the normal direction envelope amount of thickness as blade profile of parcel sn-bi alloy, three molded line that normal bias intercepts; Again the molded line after biased is reasonably divided into upper and lower Cavity Line, 25 be the cut section of upper and lower Cavity Line, sees Fig. 7, ensure the upper and lower Cavity Line of dividing without barb, otherwise after pouring into a mould tin bismuth, upper box cannot separate with lower box; Respectively upper and lower three Cavity Line be linked to be by the method for curve group thus form cavity surface 1321 in cavity surface 1221 in upper impression block, lower impressions block again.
Claims (7)
1. for the square box structure of turbine blade processing, it comprises square chest casing, described square chest casing is provided with inner cavity surface, during blade clamping, blade clamping position is arranged in described inner cavity surface, space between described blade clamping position and described inner cavity surface is filled by sn-bi alloy and is poured into a mould thus blade and square chest casing are combined into entirety, it is characterized in that: the inner cavity surface of described square chest casing is the normal direction enveloping surface of the machined surface profile at blade clamping position, the envelope amount of described normal direction enveloping surface is the thickness that blade needs the sn-bi alloy poured into a mould in square chest.
2. the square box structure for turbine blade processing according to claim 1, it is characterized in that: described square chest casing comprises upper box and lower box, described upper box comprises upper end cover and upper impression block, described lower box comprises lower bottom base and lower impressions block, described upper end cover fastens and is installed on described lower bottom base, the inner side of described upper end cover is provided with upper impression block, the inner side of described lower bottom base is provided with lower impressions block, and the interior cavity surface of described upper impression block, the interior cavity surface split of lower impressions block form the inner cavity surface of described square chest casing.
3. the square box structure for turbine blade processing according to claim 2, be is characterized in that: between described upper impression block and upper end cover, be connected and installed integrally by positioning spline, screw respectively between lower impressions block and lower bottom base.
4. the square box structure for turbine blade processing according to claim 2, it is characterized in that: the two ends of described upper end cover are provided with tenon, the supported on both sides wall of described lower bottom base is provided with tenon tooth, the tenon cooperation of described upper end cover is installed in the tenon tooth on described lower bottom base, and by eyelet bolt and fastening nuts between described upper end cover and lower bottom base.
5. the square box structure for turbine blade processing according to claim 2, it is characterized in that: end face locating piece is installed in the side, front end of described lower bottom base, the upper surface of described end face locating piece protrudes from the end face of the supported on both sides wall of described lower bottom base.
6. the square box structure for turbine blade processing according to claim 2, it is characterized in that: the semicircle sprue gate interior cavity surface of the interior cavity surface upper and lower die cavity block of described upper impression block being respectively equipped with band groove, described semicircle is built in mouth and is also provided with triangle stress groove.
7. the square box structure for turbine blade processing according to claim 2, the method for designing of the interior cavity surface of described upper impression block, the interior cavity surface of lower impressions block, it is characterized in that: need first to determine the position of blade in square chest according to technique, then the front end face of corresponding square chest, rear end face and mid portion abreast, equidistantly intercept three place's molded line on blade when blade is arranged in square chest; Predetermined blade surrounding is needed the normal direction envelope amount of thickness as blade profile of parcel sn-bi alloy, three molded line that normal bias intercepts; Again the molded line after biased is reasonably divided into upper and lower Cavity Line, ensure the upper and lower Cavity Line of dividing without barb, more respectively upper and lower three Cavity Line be linked to be by the method for curve group thus form in described upper impression block cavity surface in cavity surface, lower impressions 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510987139.4A CN105397533B (en) | 2015-12-27 | 2015-12-27 | Square box structure for turbine blade processing |
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| Publication Number | Publication Date |
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| CN105397533A true CN105397533A (en) | 2016-03-16 |
| CN105397533B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002619A (en) * | 2016-06-23 | 2016-10-12 | 重庆江增船舶重工有限公司 | Turbine blade tenon tooth machining blade positioning device |
| CN106181468A (en) * | 2016-07-27 | 2016-12-07 | 西北工业大学 | A kind of finish forge blade tenon root and front and rear edge clamp for machining |
| CN111136510A (en) * | 2019-12-25 | 2020-05-12 | 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 |
Citations (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 |
| CN101791765A (en) * | 2010-01-15 | 2010-08-04 | 无锡市艾尔福叶片有限公司 | Universal hold-down mechanism of steam turbine blade drill jig |
| CN103111877A (en) * | 2012-12-28 | 2013-05-22 | 北京航鹤童科技有限公司 | Stacking shaft positioning method and device of vane molded surface |
| EP2682832A1 (en) * | 2012-07-04 | 2014-01-08 | Siemens Aktiengesellschaft | Clamp fixture for clamping turbine blades and method for producing the clamp |
| CN104057063A (en) * | 2014-05-23 | 2014-09-24 | 西安西航集团莱特航空制造技术有限公司 | Low melting point alloy casting clamp for processing thin-walled parts, and use 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 |
-
2015
- 2015-12-27 CN CN201510987139.4A patent/CN105397533B/en active Active
Patent Citations (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 |
| CN101791765A (en) * | 2010-01-15 | 2010-08-04 | 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 |
| CN103111877A (en) * | 2012-12-28 | 2013-05-22 | 北京航鹤童科技有限公司 | Stacking shaft positioning method and device of vane molded surface |
| CN104057063A (en) * | 2014-05-23 | 2014-09-24 | 西安西航集团莱特航空制造技术有限公司 | Low melting point alloy casting clamp for processing thin-walled parts, and use 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002619A (en) * | 2016-06-23 | 2016-10-12 | 重庆江增船舶重工有限公司 | Turbine blade tenon tooth machining blade positioning device |
| CN106181468A (en) * | 2016-07-27 | 2016-12-07 | 西北工业大学 | A kind of finish forge blade tenon root and front and rear edge clamp for machining |
| 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 |
| CN111136510A (en) * | 2019-12-25 | 2020-05-12 | 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 |
| 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 |
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| CN105397533B (en) | 2018-03-27 |
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