CN114643376A - Positioning support clamp for machining small hole of turbine guide disc and working method - Google Patents
Positioning support clamp for machining small hole of turbine guide disc and working method Download PDFInfo
- Publication number
- CN114643376A CN114643376A CN202011494826.XA CN202011494826A CN114643376A CN 114643376 A CN114643376 A CN 114643376A CN 202011494826 A CN202011494826 A CN 202011494826A CN 114643376 A CN114643376 A CN 114643376A
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- Prior art keywords
- clamp
- sleeve
- center
- gland
- guide disc
- 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.)
- Pending
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- 238000003754 machining Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 34
- 210000004907 gland Anatomy 0.000 claims description 29
- 230000000149 penetrating effect Effects 0.000 claims description 4
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 229910003460 diamond Inorganic materials 0.000 abstract 1
- 239000010432 diamond Substances 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
-
- 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
Abstract
The invention relates to a positioning support clamp for machining a small hole of a turbine guide disc and a working method. The technical scheme includes that the clamp comprises a clamp base, the clamp base is in a diamond shape, U-shaped grooves are formed in two ends of the base respectively, a cylindrical sleeve is arranged in the center of the clamp base, an annular groove is formed in the upper end of the sleeve along the circumferential direction, a through hole is formed in the center of the upper end of the clamp base, first threaded bottom holes are uniformly distributed in the upper end of the clamp base along the circumferential direction, connecting holes are uniformly formed in the annular groove along the center of the base, and second threaded bottom holes are uniformly formed in the cylindrical sleeve along the radial direction. According to the invention, the adjustable floating ring is arranged, the position of the floating ring is adjusted up and down by rotating the socket head cap screws, so that the positioning requirements of different turbine guide disc parts are met, the self rigidity of the parts is improved, the compression deformation of the parts in a compression state is weakened, the matching precision of the floating ring and the parts is improved, the size of the whole external structure of the clamp is reduced by arranging the pressing plate, and the clamping reliability of the parts is ensured.
Description
Technical Field
The invention relates to the technical field of aeroengine part machining, in particular to a positioning support clamp for machining a small hole of a turbine flow guide disc and a working method.
Background
The turbine guide plate part is an important component of an aeroengine, and has the structural characteristics of small size, complex profile, thin wall and complicated part positioning and clamping. The positioning method of the part related to the hole machining of the turbine guide disc is multiple, but the part is complex in molded surface, poor in rigidity of a positioning surface of the part, and difficult to effectively remove the positioning surface and the clamp, the part cannot be positioned by a conventional positioning clamp, the part is suspended during machining due to the lack of a stable and reliable positioning clamping surface, the stress is unbalanced, the thin-wall part of the part can be warped and deformed after machining, the position accuracy of a hole of the part after machining is poor, the positioning reliability of the conventional clamp is poor, the clamp cannot effectively clamp the part, and the deformation of the part after machining cannot be repaired. Therefore, in order to improve the reliability of processing small holes of the turbine guide disc part and eliminate unstable factors during part positioning, a new auxiliary supporting clamp is designed to determine a reasonable positioning surface and a reasonable supporting surface, so that the positioning state is improved, the positioning precision of the part is improved, and the part hole processing qualified rate is improved.
Disclosure of Invention
The invention aims to provide an auxiliary support clamp for machining holes of a turbine guide disc part and a working method, wherein a floating ring is arranged on an arc positioning part of the part, so that the overall rigidity of the part is effectively improved, the C-shaped pressing plate is arranged, so that the clamping reliability of the part is ensured, the external structural size of the clamp is reduced, the interference of a drill bit with the clamp during drilling machining is avoided, the space of the C-shaped pressing plate is saved compared with a common flat pressing plate, when small holes are machined, a cutter can approach a machined workpiece to the maximum extent, the closer the cutter handle is to the part, and the better the rigidity of the cutter can be designed.
In order to solve the problems in the prior art, the technical scheme of the invention is as follows: the utility model provides a location support fixture for turbine flow guide disc aperture processing which characterized in that: the clamp comprises a rhombic clamp base and a T-shaped base, wherein the T-shaped base is integrally formed by a cylindrical sleeve arranged in the center of the base; the center of the bottom of the T-shaped seat is hollow;
the fixture comprises a fixture base, a sleeve, a through hole, a gland, screw counter bores and a gland, wherein U-shaped grooves are respectively formed in two ends of the fixture base, an annular groove is formed in the upper end of the sleeve, connecting through holes are uniformly formed in the sleeve below the annular groove along the center of the base, a through hole is formed in the center of the top of the sleeve, the top of the sleeve is provided with the gland, a hole is formed in the center of the gland, the sleeve is connected with the gland through the hexagon socket head cap screws, the hexagon socket head cap screws penetrate through the bottoms of the through holes in the center of the sleeve to be connected with a support plate, the sleeve is uniformly provided with the screw counter bores I along the circumferential direction, the cylindrical sleeve is uniformly provided with the screw counter bores II along the radial direction, and the gland is provided with the through holes along the circumferential direction and is fixed with the screw counter bores I of the sleeve through the hexagon socket head cap screws I;
a floating ring is arranged in the annular groove, a supporting pin is arranged at the lower end of the floating ring and penetrates through the connecting through hole, the lower end of the supporting pin is connected with the supporting plate,
the lower end of each threaded counter bore II on the outer wall of the cylindrical sleeve is provided with a V-shaped groove, a C-shaped pressing plate is clamped between the V-shaped groove and the top of the sleeve, a hole is formed in the center of the pressing plate, and the pressing plate is connected with the threaded counter bore II of the sleeve through a hexagon socket head cap screw II.
Further, the first threaded counter bore and the connecting hole are arranged on concentric circumferences.
Furthermore, the first threaded counter bore is provided with 3, the connecting hole is provided with 3, and the second threaded counter bore is provided with 5.
Furthermore, an opening gasket is arranged between the first inner hexagonal socket head cap screw and the gland.
Furthermore, a spherical washer and a hexagonal thin nut are arranged at the lower end of the inner hexagonal screw.
The working method of the positioning and supporting clamp for machining the small hole of the turbine guide disc comprises the following steps:
1) placing the clamp base on a workbench of a numerical control machining center, and fixing the clamp base on the workbench by penetrating screws through open U-shaped grooves formed in two ends of the clamp base;
2) placing a turbine guide disc part on a floating ring, rotating an inner hexagon screw, pulling a support plate to move upwards, driving 3 support pins to move upwards by the support plate, jacking the floating ring by the support pins, and attaching the upper end positioning surface of the floating ring to the lower end positioning surface of the turbine guide disc part;
3) sequentially installing a pressing plate, pressing the upper end positioning surface of the pressing plate on the end surface of the part during installation, attaching the lower end of the pressing plate to the V-shaped groove of the cylindrical sleeve, screwing the second hexagon socket head cap screw, and pressing the turbine flow guiding disc part by the pressing plate under stress;
4) and (3) installing a gland, fitting a positioning surface below the gland with the upper end surface of the turbine flow guide plate, respectively installing a first opening gasket at the position 3 and a first inner hexagonal socket head screw at the position 3, and screwing the first inner hexagonal socket head screw to fix the gland.
5) And (4) installing a cutter, and processing the radial small hole of the turbine guide disc part.
Compared with the prior art, the invention has the following advantages:
1) the adjustable floating ring is arranged, and the position of the floating ring is adjusted up and down by rotating the socket head cap screws, so that the positioning requirements of different turbine guide disc parts are met. After the floating ring is adjusted, the lower end face of the turbine guide disc part is attached to the upper end face of the floating ring, so that the rigidity of the part is improved, the compression deformation of the part in a compression state due to insufficient rigidity is eliminated or weakened, and the matching precision of the floating ring and the part is improved.
2) According to the invention, the C-shaped pressing plate is arranged, so that the size of the whole external structure of the clamp is reduced, the pressing plate is enabled to press the part downwards, the reliability of clamping the part is ensured, the interference of a drill bit and the clamp during drilling and machining is avoided, the space saved by the clamp is saved, and a foundation is laid for the optimization of the cutter structure.
3) According to the invention, the gland is arranged, the excircle of the gland is attached to the inner side of the hole wall of the turbine flow deflector part, the rigidity of the hole wall of the part is improved, and the clearance groove is arranged at the excircle of the cover plate, so that the interference of a drill bit with the gland during machining is avoided, and the hole machining and chip removal are facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic structural view of a base;
FIG. 4 is a schematic view of the gland;
FIG. 5 is a schematic view of a C-shaped platen structure;
FIG. 6 is a schematic view of a turbine diaphragm detail;
description of reference numerals: 1-base, 2-gland, 3- 'C' -shaped pressure plate, 4-floating ring, 5-support plate, 6-support pin, 7-opening gasket, 8-inner hexagonal screw, 9-hexagonal thin nut, 10-inner hexagonal socket head screw II, 11-inner hexagonal socket head screw I, 12-spherical gasket, 13-turbine deflector part, 14-cylindrical sleeve, 15-annular groove, 16-through hole, 17-thread counter bore I, 18-thread counter bore II, 19-connecting through hole and 20-radial small hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A positioning and supporting clamp for machining a small hole of a turbine guide disc comprises a rhombic clamp base 1 and a T-shaped base which is integrally arranged at the center of the base and consists of a cylindrical sleeve 14, wherein the T-shaped base is provided with a groove and a groove; the center of the bottom of the T-shaped seat is hollow; two ends of the clamp base are respectively provided with a U-shaped groove and are fixed with a workbench of a machine tool through the U-shaped grooves.
The upper end of the sleeve 14 is provided with an annular groove 15 along the circumferential direction, the top of the sleeve 4 is provided with a gland 2, as shown in fig. 4, the centers of the sleeve 4 and the gland 2 are respectively provided with a through hole 16, an inner hexagonal screw 8 penetrates through the through hole, the other end of the inner hexagonal screw 8 is connected with the support plate 5, and the lower end of the inner hexagonal screw 8 is provided with a spherical washer 12 and a hexagonal thin nut 9.
The sleeve 14 and the gland 2 are uniformly provided with 3 threaded counter bores I17 along the circumferential direction, the inner hexagonal socket head cap screws I11 are arranged in the threaded counter bores I, and the split washers 7 penetrate through the middles of the screws I11 and the gland 2.
A floating ring 4 is arranged in the annular groove 15, a supporting pin 6 is arranged at the lower end of the floating ring 4, the supporting pin 6 is arranged in a connecting hole 19 in a penetrating manner, the lower end of the supporting pin 6 is connected with a supporting plate 5, and a part 13 is placed on the floating ring 4; 3 connecting holes 19 are uniformly formed in the annular groove 15 along the center of the base 1, and 5 threaded counter bores II 18 are uniformly formed in the cylindrical sleeve 14 along the radial direction.
The lower end of each threaded counter bore II 18 in the outer wall of the cylindrical sleeve 14 is provided with a V-shaped groove, a C-shaped pressing plate 3 is clamped between the V-shaped groove and the top of the sleeve 14, a hole is formed in the center of the pressing plate 3, and the pressing plate is connected with the threaded counter bore II 18 of the sleeve 14 through a hexagon socket head cap screw II 10, as shown in fig. 3.
The first threaded counter bore 17 and the connecting bore 19 are arranged on concentric circumferences.
The number of the split washers 7 is 3, and the number of the first screws 11 is 3. The number of the supporting pins 6 is 3, the number of the pressing plates 3 is 5, the number of the inner hexagonal socket head cap screws 10 is 5, and the number of the hexagonal thin nuts 9 is 2.
The socket head cap screw 8 is inserted into the central hole of the support plate 5, and the end of the socket head cap screw 8 is connected with the spherical washer 12 and the thin hexagon nut 9.
The working method of the positioning and supporting clamp for machining the small hole of the turbine guide disc comprises the following steps:
the first step is as follows: placing the clamp base 1 on a workbench of a numerical control machining center, and fixing the clamp base 1 on the workbench by penetrating screws through open U-shaped grooves formed in two ends of the clamp base;
the second step is that: when the turbine guide disc part is installed, the part 13 is placed on the floating ring 4, the hexagon socket head cap screws 8 are rotated, the supporting plate 5 is pulled to move upwards, the supporting plate 5 drives the 3 supporting pins 6 to move upwards, the floating ring 4 is jacked up by the supporting pins 6, and the upper end positioning surface of the floating ring 4 is attached to the lower end positioning surface of the turbine guide disc part 13.
The third step: and (3) sequentially installing the pressing plate, pressing the upper end positioning surface of the pressing plate 3 on the end surface of the part 13 during installation, fitting the lower end of the pressing plate 3 with the V-shaped groove of the cylindrical sleeve 14, screwing the second hexagon socket head cap screw 10, and pressing the turbine flow guiding disc part 13 by the pressing plate 3 under stress.
The fourth step: installing a gland 2, attaching a positioning surface below the gland 2 to the upper end surface of a turbine flow guide disc 13, installing 3 opening gaskets 7 and 3 hexagon socket head cap screws 11 respectively, and screwing the hexagon socket head cap screws 11 to fix the gland 2.
The fifth step: and (4) installing a cutter, and machining a radial small hole 20 of the turbine guide disc part.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (6)
1. The utility model provides a location support fixture for turbine flow guide disc aperture processing which characterized in that: comprises a T-shaped seat consisting of a rhombic clamp base (1) and a cylindrical sleeve (14) integrally arranged at the center of the base; the center of the bottom of the T-shaped seat is hollow;
the clamp is characterized in that U-shaped grooves are respectively arranged at two ends of a clamp base (1), an annular groove (15) is arranged at the upper end of a sleeve (14), connecting through holes (19) are uniformly distributed on the sleeve (14) below the annular groove (15) along the center of the base (1), a through hole (16) is arranged at the center of the top of the sleeve (14), a gland (2) is arranged at the top of the sleeve (14), a hole is arranged at the center of the gland (2), the sleeve (14) is connected with the gland (2) through an inner hexagon screw (8), the inner hexagon screw (8) penetrates through the bottom of the through hole (16) at the center of the sleeve (14) and is connected with a support plate (5), the sleeve (14) is uniformly distributed with a first screw thread counter bore (17) along the circumferential direction, the cylindrical sleeve (14) is uniformly distributed with a second screw thread counter bore (18) along the radial direction, the gland (2) is provided with through holes along the circumferential direction, the inner hexagonal socket head cap screw I (11) is fixed with the thread counter bore I (17) of the sleeve (14);
a floating ring (4) is arranged in the annular groove (15), a supporting pin (6) is arranged at the lower end of the floating ring (4), the supporting pin (6) is arranged in the connecting through hole (19) in a penetrating way, the lower end of the supporting pin (6) is connected with the supporting plate (5),
the lower end of each threaded counter bore II (18) on the outer wall of the cylindrical sleeve (14) is provided with a V-shaped groove, a C-shaped pressing plate (3) is clamped between the V-shaped groove and the top of the sleeve (14), a hole is formed in the center of the pressing plate (3), and the pressing plate is connected with the threaded counter bore II (18) of the sleeve (14) through a hexagon socket head cap screw II (10).
2. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 1, wherein: the first threaded counter bore (17) and the connecting hole (19) are arranged on concentric circumferences.
3. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 1 or 2, wherein: the number of the first threaded counter bores (17) is 3, the number of the connecting holes (19) is 3, and the number of the second threaded counter bores (18) is 5.
4. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 3, wherein: an opening gasket (7) is arranged between the first inner hexagonal socket head cap screw (11) and the gland (2).
5. The positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 4, wherein: the lower end of the inner hexagon screw (8) is provided with a spherical washer (12) and a hexagon thin nut (9).
6. The working method of the positioning and supporting clamp for small hole machining of the turbine diaphragm as claimed in claim 1, wherein: the method comprises the following steps:
1) the clamp base (1) is placed on a workbench of a numerical control machining center, and screws penetrate through open U-shaped grooves formed in two ends of the clamp base to fix the clamp base (1) on the workbench;
2) placing a turbine guide disc part (13) on a floating ring (4), rotating an inner hexagon screw (8), pulling a support plate (5) to move upwards, driving 3 support pins (6) to move upwards by the support plate (5), jacking the floating ring (4) by the support pins (6), and attaching the upper end positioning surface of the floating ring (4) to the lower end positioning surface of the turbine guide disc part (13);
3) sequentially installing the pressing plate (3), pressing the upper end positioning surface of the pressing plate (3) on the end surface of the part (13) during installation, attaching the lower end of the pressing plate (3) to a V-shaped groove of the cylindrical sleeve (14), screwing the second hexagon socket head cap screw (10), and pressing the turbine guide disc part (13) tightly under the stress of the pressing plate (3);
4) installing a gland (2), attaching a positioning surface on the lower surface of the gland (2) to the upper end surface of a turbine guide disc (13), respectively installing 3 open gaskets (7) and 3 inner hexagonal socket head cap screws I (11), and screwing the inner hexagonal socket head cap screws I (11) to fix the gland (2);
5) and installing a cutter, and machining a radial small hole (20) of the turbine guide disc part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494826.XA CN114643376A (en) | 2020-12-17 | 2020-12-17 | Positioning support clamp for machining small hole of turbine guide disc and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011494826.XA CN114643376A (en) | 2020-12-17 | 2020-12-17 | Positioning support clamp for machining small hole of turbine guide disc and working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114643376A true CN114643376A (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011494826.XA Pending CN114643376A (en) | 2020-12-17 | 2020-12-17 | Positioning support clamp for machining small hole of turbine guide disc and working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114643376A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070227318A1 (en) * | 2006-03-31 | 2007-10-04 | Matthias Biertz | Workpiece holding system for a machine tool |
| CN104384999A (en) * | 2014-12-01 | 2015-03-04 | 安徽机电职业技术学院 | Right-angle gear reduction gearbox body end face milling fixture and using method thereof |
| CN104895622A (en) * | 2015-06-24 | 2015-09-09 | 中国航空动力机械研究所 | Gas turbine guide flow disk |
| CN205020975U (en) * | 2015-10-12 | 2016-02-10 | 株洲齿轮有限责任公司 | Thin wall ring gear class part gear shaping anchor clamps |
| CN108145464A (en) * | 2018-02-10 | 2018-06-12 | 无锡微研中佳精机科技有限公司 | A kind of bowl-type thin-walled parts vacuum fixture |
| CN108466083A (en) * | 2018-04-28 | 2018-08-31 | 西安西航集团莱特航空制造技术有限公司 | One kind is for thin-walled parts edge and hole machined Auxiliary support fixture and working method |
| CN109483261A (en) * | 2018-10-30 | 2019-03-19 | 贵州黎阳国际制造有限公司 | A kind of positioning fixture and localization method of opening thin annular flange dish |
| CN208644711U (en) * | 2018-07-13 | 2019-03-26 | 西安西航集团莱特航空制造技术有限公司 | One kind is for obturaging part integrated positioning support fixture |
| CN109531208A (en) * | 2019-01-07 | 2019-03-29 | 武汉船用机械有限责任公司 | The clamping tooling of thin-walled split blade type part |
| CN214814990U (en) * | 2020-12-17 | 2021-11-23 | 西安西航集团莱特航空制造技术有限公司 | Positioning and supporting clamp for machining small holes of turbine flow guide disc |
-
2020
- 2020-12-17 CN CN202011494826.XA patent/CN114643376A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070227318A1 (en) * | 2006-03-31 | 2007-10-04 | Matthias Biertz | Workpiece holding system for a machine tool |
| CN104384999A (en) * | 2014-12-01 | 2015-03-04 | 安徽机电职业技术学院 | Right-angle gear reduction gearbox body end face milling fixture and using method thereof |
| CN104895622A (en) * | 2015-06-24 | 2015-09-09 | 中国航空动力机械研究所 | Gas turbine guide flow disk |
| CN205020975U (en) * | 2015-10-12 | 2016-02-10 | 株洲齿轮有限责任公司 | Thin wall ring gear class part gear shaping anchor clamps |
| CN108145464A (en) * | 2018-02-10 | 2018-06-12 | 无锡微研中佳精机科技有限公司 | A kind of bowl-type thin-walled parts vacuum fixture |
| CN108466083A (en) * | 2018-04-28 | 2018-08-31 | 西安西航集团莱特航空制造技术有限公司 | One kind is for thin-walled parts edge and hole machined Auxiliary support fixture and working method |
| CN208644711U (en) * | 2018-07-13 | 2019-03-26 | 西安西航集团莱特航空制造技术有限公司 | One kind is for obturaging part integrated positioning support fixture |
| CN109483261A (en) * | 2018-10-30 | 2019-03-19 | 贵州黎阳国际制造有限公司 | A kind of positioning fixture and localization method of opening thin annular flange dish |
| CN109531208A (en) * | 2019-01-07 | 2019-03-29 | 武汉船用机械有限责任公司 | The clamping tooling of thin-walled split blade type part |
| CN214814990U (en) * | 2020-12-17 | 2021-11-23 | 西安西航集团莱特航空制造技术有限公司 | Positioning and supporting clamp for machining small holes of turbine flow guide disc |
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