CN205290466U - A square chest structure for turbine blade processing - Google Patents
A square chest structure for turbine blade processing Download PDFInfo
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- CN205290466U CN205290466U CN201521094896.0U CN201521094896U CN205290466U CN 205290466 U CN205290466 U CN 205290466U CN 201521094896 U CN201521094896 U CN 201521094896U CN 205290466 U CN205290466 U CN 205290466U
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- blade
- square chest
- bottom base
- square
- cavity block
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Abstract
The utility model relates to a square chest structure for turbine blade processing, its can solve current square chest inner chamber because of with the blade between the space is inhomogeneous leads to the problem that tin bismuth alloy thickness is uneven, the heat expansion rate is different to effectively reduce the blade and warp, guarantee the blade root machining precision. It includes the square chest box, and the square chest box is equipped with the inner chamber face, and blade clamping position sets up in the inner chamber face during blade clamping, thereby the space between blade clamping position and the inner chamber face is filled the pouring by the tin bismuth alloy and is combined into whole, its characterized in that with blade and square chest box: the inner chamber face of square chest box is the type profile of surface's at blade clamping position normal direction enveloping surface, and the envelope volume of normal direction enveloping surface is the thickness of blade tin bismuth alloy of needs pouring in the square chest.
Description
Technical field
This utility model relates to the frock clamp field of turbine blade processing, is specially a kind of square box structure for turbine blade processing.
Background technology
In the processing of medium-and-large-sized turbine blade, owing to blade profile complexity is difficult to position, need to put in square chest by blade, by pouring into a mould together with blade is set in by sn-bi alloy with square chest, square chest can serve as pallet upper lathe together with blade, thus positioning datum is converted to the orthogonal two sides of square chest by blade profile, it is simple to position during processing blade root.
The inner chamber A of presently used square chest is perpendicular to the contoured surface B(of square chest end face and sees Fig. 1), blade generally has the parts such as integral shroud, boss, in order to enable to put in position by blade through square chest, also for adapting to difform blade, it is relatively larger that the inner chamber of square chest all designs, and this sn-bi alloy consumption resulting in full whole inner chamber is very big, and owing to the density of sn-bi alloy is much larger than the density of common metal, sn-bi alloy consumption means that greatly the weight ratio of whole fixture is heavier, and the load of lathe is also just relatively larger, again owing to the inner chamber of square chest is big compared with blade profile, after blade puts square chest into, space between blade and square chest is just very uneven, blade profile also tends to be distortion, thus causing 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 that the sn-bi alloy some places of cast are 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, make the relative position generation skew of blade and square chest, the final machining accuracy affecting blade root.
Summary of the invention
For the problems referred to above, a kind of square box structure for turbine blade processing of this utility model, 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 reducing deformable blade, ensureing blade root machining precision.
A kind of square box structure for turbine blade processing, it includes 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, cast is filled by sn-bi alloy thus blade and square chest casing are combined into entirety in space between described blade clamping position and described inner cavity surface, 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 of cast in square chest.
Further, described square chest casing includes upper box and lower box, described upper box includes upper end cover and mo(u)ld top half cavity block, described lower box includes lower bottom base and mo(u)ld bottom half cavity 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 mo(u)ld top half cavity block, and the inner side of described lower bottom base is provided with mo(u)ld bottom half cavity block, the interior cavity surface of described mo(u)ld top half cavity block, mo(u)ld bottom half cavity block interior cavity surface split form the inner cavity surface of described square chest casing.
Further, between described mo(u)ld top half cavity block and upper end cover, it is connected by positioning spline, screw respectively between mo(u)ld bottom half cavity block and lower bottom base and is mounted to entirety.
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 of described upper end cover coordinates in the tenon tooth being installed on described lower bottom base, and by eyelet bolt and nut fastening between described upper end cover and lower bottom base.
Further, the side, front end of described lower bottom base being installed end face locating piece, 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 mo(u)ld top half cavity block being respectively equipped with the semicircle sprue gate with groove, described semicircle is built and is additionally provided with triangle stress groove in mouth.
Further, the interior cavity surface of described mo(u)ld top half cavity block, mo(u)ld bottom half cavity block the method for designing of interior cavity surface, need the position first determining blade in square chest according to technique, then the front end face of correspondence 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 thickness normal direction envelope amount as blade profile of parcel sn-bi alloy, three molded line that normal bias intercepts; Again the molded line after biasing is reasonably divided into upper and lower Cavity Line, ensureing that the upper and lower Cavity Line divided is without barb, upper and lower three Cavity Line are linked to be thus forming the interior cavity surface of the interior cavity surface of described mo(u)ld top half cavity block, mo(u)ld bottom half cavity block by method again through curve group respectively.
The beneficial effects of the utility model are in that: the inner cavity surface of square chest casing is the normal direction enveloping surface that the envelope amount according to the predetermined sn-bi alloy thickness of blade profile profile normal bias is formed, thus after blade puts into square chest inner chamber, square chest inner cavity surface and blade are formed around uniform space, the stannum bismuth gold thickness so poured into a mould in space is uniform, consumption is few, lightweight, it is possible to effectively alleviate lathe load; Meanwhile, square chest inner cavity surface keeps uniform space with the surrounding of blade, it is possible to keep identical thermal expansion ratio, it is prevented that deformable blade, it is ensured that positioning precision; The split modular structure that square chest casing is fastened by upper end cover, lower bottom base, it is connected by eyelet bolt, nut between upper end cover with lower bottom base, the deformation produced when sn-bi alloy cooling expands can be transferred to upper box by eyelet bolt, thus alleviating the deformation of lower box, it is ensured that blade is relative to the positioning precision of square chest bottom surface; And it is general owing to square chest casing is fabricated structure, upper end cover and lower bottom base, it is possible to suitable in different blades, only need to change corresponding mo(u)ld top half cavity block according to the difference of blade profile to be processed and mo(u)ld bottom half cavity block is just passable, be greatly saved cost; Cast sn-bi alloy is easy at sprue gate with groove, and stress groove breaks alloy into pieces work after making to machine is convenient effectively, thus is possible not only to cast low-melting alloy, it is also possible to pour into a mould frangible low-melting alloy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the square box structure being currently used for turbine blade processing;
Fig. 2 is the main TV structure schematic diagram of a kind of square box structure for turbine blade processing of this utility model embodiment;
Fig. 3 is the plan structure schematic diagram of Fig. 2;
Fig. 4 is the perspective view of the upper box of a kind of square box structure for turbine blade processing of this utility model embodiment;
Fig. 5 is the perspective view of the lower box of a kind of square box structure for turbine blade processing of this utility model embodiment;
Fig. 6 is that in this utility model embodiment square chest, cavity surface method for designing Leaf molded line intercepts schematic diagram;
Fig. 7 is that in this utility model embodiment square chest, in cavity surface method for designing, upper and lower die cavity splits schematic diagram;
Fig. 8 is the schematic diagram being placed in square chest by blade in this utility model embodiment.
Accompanying drawing labelling: 10-square chest casing; 11-inner cavity surface; 12-upper box; 121-upper end cover; 1211-tenon; 122-mo(u)ld top half cavity block; The interior cavity surface of 1221-mo(u)ld top half cavity block; 13-lower box; 131-lower bottom base; 1311-tenon tooth; 132-mo(u)ld bottom half cavity block; The interior cavity surface of 1321-mo(u)ld top half cavity block; 133-end face locating piece; 14-keyway arrangements; 15-socket cap screw; 16-eyelet bolt; 17-band shoulder hex nut; 18-semicircle sprue gate; 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, a kind of square box structure for turbine blade processing of this utility model, it includes 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, cast is filled by sn-bi alloy thus blade and square chest casing are combined into entirety in space between blade clamping position and inner cavity surface 11, the normal direction enveloping surface of the machined surface profile that inner cavity surface 11 is blade clamping position of square chest casing 10, the envelope amount of normal direction enveloping surface is the thickness that blade needs the sn-bi alloy of cast in square chest.
See Fig. 2��Fig. 5, square chest casing 10 includes upper box 12 and lower box 13, upper box 12 includes upper end cover 121 and mo(u)ld top half cavity block 122, lower box 13 includes lower bottom base 131 and mo(u)ld bottom half cavity block 132, is connected by positioning spline structure 14, socket cap screw 15 respectively and is mounted to entirety between mo(u)ld top half cavity block 122 with upper end cover 121, between mo(u)ld bottom half cavity block 132 and lower bottom base 131; 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, the tenon 1211 of upper end cover coordinates in the tenon tooth 1311 being installed on lower bottom base, and between upper end cover 121 and lower bottom base 131 by eyelet bolt 16 and band shoulder hex nut 17 fasten, the interior cavity surface 1221 of mo(u)ld top half cavity block 122, mo(u)ld bottom half cavity block 132 interior cavity surface 1321 split formed square chest casing inner cavity surface 11; Installing end face locating piece 133 on the side, front end of lower bottom base 131, 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; Wherein the tenon structure on upper end cover 121 and lower bottom base 131 controls location about the level of upper box 12, lower box 13, and end face locating piece 133 controls to position before and after level between upper box 12, lower box 13. Being respectively equipped with the semicircle sprue gate 18 with groove in the interior cavity surface 1321 of the interior cavity surface 1221 upper and lower die cavity block 132 of mo(u)ld top half cavity block 132, semicircle is built and is additionally provided with triangle stress groove 19 in mouth 18.
The interior cavity surface of mo(u)ld top half cavity block, mo(u)ld bottom half cavity block the method for designing of interior cavity surface, the position first determining blade in square chest is needed according to technique, when blade is arranged in square chest, the front end face of correspondence 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 thickness normal direction envelope amount as blade profile of parcel sn-bi alloy, three molded line that normal bias intercepts; Again the molded line after biasing being reasonably divided into upper and lower Cavity Line, 25 is the cut section of upper and lower Cavity Line, sees Fig. 7, it is ensured that the upper and lower Cavity Line divided is without barb, and otherwise, after cast stannum bismuth, upper box cannot separate with lower box; Upper and lower three Cavity Line are linked to be thus forming the interior cavity surface 1321 of the interior cavity surface 1221 of mo(u)ld top half cavity block, mo(u)ld bottom half cavity block by method again through curve group respectively.
Claims (6)
1. the square box structure for turbine blade processing, it includes 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, cast is filled by sn-bi alloy thus blade and square chest casing are combined into entirety in space between described blade clamping position and described inner cavity surface, 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 of cast in square chest.
2. a kind of square box structure for turbine blade processing according to claim 1, it is characterized in that: described square chest casing includes upper box and lower box, described upper box includes upper end cover and mo(u)ld top half cavity block, described lower box includes lower bottom base and mo(u)ld bottom half cavity 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 mo(u)ld top half cavity block, the inner side of described lower bottom base is provided with mo(u)ld bottom half cavity block, the interior cavity surface of described mo(u)ld top half cavity block, mo(u)ld bottom half cavity block interior cavity surface split form the inner cavity surface of described square chest casing.
3. a kind of square box structure for turbine blade processing according to claim 2, it is characterised in that: it is connected by positioning spline, screw respectively between described mo(u)ld top half cavity block and upper end cover, between mo(u)ld bottom half cavity block and lower bottom base and is mounted to entirety.
4. a kind of 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 of described upper end cover coordinates in the tenon tooth being installed on described lower bottom base, and by eyelet bolt and nut fastening between described upper end cover and lower bottom base.
5. a kind of square box structure for turbine blade processing according to claim 2, it is characterised in that: installing end face locating piece on 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. a kind of square box structure for turbine blade processing according to claim 2, it is characterized in that: being respectively equipped with the semicircle sprue gate with groove in the interior cavity surface of the interior cavity surface upper and lower die cavity block of described mo(u)ld top half cavity block, described semicircle is built and is additionally provided with triangle stress groove in mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521094896.0U CN205290466U (en) | 2015-12-27 | 2015-12-27 | A square chest structure for turbine blade processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521094896.0U CN205290466U (en) | 2015-12-27 | 2015-12-27 | A square chest structure for turbine blade processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205290466U true CN205290466U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521094896.0U Withdrawn - After Issue CN205290466U (en) | 2015-12-27 | 2015-12-27 | A square chest structure for turbine blade processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205290466U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397533A (en) * | 2015-12-27 | 2016-03-16 | 无锡透平叶片有限公司 | Square box structure for processing turbine blade |
| 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 |
-
2015
- 2015-12-27 CN CN201521094896.0U patent/CN205290466U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397533A (en) * | 2015-12-27 | 2016-03-16 | 无锡透平叶片有限公司 | Square box structure for processing turbine blade |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20180327 |