CN113001451B - Large-scale split type metal mandrel assembly fixture - Google Patents
Large-scale split type metal mandrel assembly fixture Download PDFInfo
- Publication number
- CN113001451B CN113001451B CN202110248293.5A CN202110248293A CN113001451B CN 113001451 B CN113001451 B CN 113001451B CN 202110248293 A CN202110248293 A CN 202110248293A CN 113001451 B CN113001451 B CN 113001451B
- Authority
- CN
- China
- Prior art keywords
- positioning
- support
- metal core
- core mold
- split type
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention relates to a large split type metal core mold assembling tool which comprises a tool base, a positioning support seat, a left end socket positioning seat, a positioning support, a support type pressing positioning disc, a flange type pressing positioning disc, an installation column and a telescopic support rod, wherein the tool base is provided with a positioning support seat; the positioning support seat, the left end socket positioning seat, the positioning support column and the mounting column are respectively mounted on the tool base, the positioning of the inner and outer molded surfaces of the split metal core mold is realized through the matching of the positioning support seat, the left end socket positioning seat, the positioning support column and the telescopic support rod with the corresponding molded surface blocks, and the external surface precision of the split metal core mold is ensured; the installation column and the positioning groove which are coaxial with the split type metal core mold are arranged at the center of the assembly tool, so that the coaxiality of the split type metal core mold is ensured. The fixture is suitable for assembling a large split type metal core mold, the fixture base is fixed on the ground, and the integral structure of the split type metal core mold is fixedly supported by combining the positioning support base, so that the stability of the assembly fixture is ensured.
Description
Technical Field
The invention belongs to the field of manufacturing of solid rocket engine shells, and particularly relates to a large split type metal core mold assembling tool.
Background
The solid rocket engine is a power device of a rocket projectile or a missile, the core mold is a mold formed by winding a rocket engine shell, and the geometric shape and the size of the inner surface of the shell are ensured by the mold. However, each part of the large split metal core mold has high weight and large volume, and the precision of the outer surface of the core mold is required to be ensured during assembly, which brings great difficulty to the assembly work of the core mold.
The existing metal core mold assembling tool is poor in stability during assembling, cannot effectively fix each split mold of a core mold, cannot guarantee the external profile precision of the assembled core mold, and is prone to shaking during assembling, so that the assembling process is affected, and the assembling efficiency is low.
Disclosure of Invention
The technical problem to be solved is as follows:
in order to avoid the defects of the prior art, the invention provides a large split type metal core mold assembling tool, which is used for positioning a split type metal core mold through a positioning support seat, a left end socket positioning seat, a positioning support column and a profile block arranged on an installation column.
The technical scheme of the invention is as follows: the utility model provides a large-scale split type metal mandrel assembly fixture which characterized in that: the fixture comprises a fixture base, a positioning support seat, a left end socket positioning seat, a positioning support, a support type pressing positioning disc, a flange type pressing positioning disc, an installation column and a telescopic support rod;
the tool base is positioned at the bottom of the whole tool, is fixed on the ground through a connecting sheet arranged along the circumferential direction and is used for supporting and positioning the whole tool;
the positioning support seat is formed by welding a first connecting plate, a support plate and a second profile block, and the first connecting plate is positioned at the bottom and is used for being fixedly connected with the tool base; the second profile block is fixed right above the first connecting plate through a supporting plate, and the profile of the upper surface of the second profile block is matched with the profile of the left end socket of the split metal core mould; the 8 positioning supporting seats are uniformly distributed on the upper surface of the tool base along the circumferential direction, are fastened with the tool base through first connecting plates and are used for supporting the split type metal core mold;
the left end socket positioning seat comprises a support column and an octagonal frame, the octagonal frame is fixed right above the tool base through a plurality of support columns, and the octagonal frame is axially vertical to the tool base; the plurality of support columns are uniformly distributed on the periphery of the positioning support seat and are coaxial; the plurality of the support type compaction positioning discs are uniformly distributed on the upper surface of the octagonal frame along the circumferential direction and comprise a support, a limiting column and a third profile block, and the support is fixedly connected with the octagonal frame through screws; the third profile block is arranged on one side of the support through a limiting column, and the profile of the third profile block is matched with the split type metal core die left end socket, so that the outer profile of the split type metal core die left end socket is positioned;
the positioning pillars are uniformly distributed on the periphery of the octagonal frame along the circumferential direction, and the bottom surfaces of the positioning pillars are fixedly connected with the tool base and the ground through second connecting sheets and bolts; the two flange type pressing positioning discs are respectively arranged above and in the middle of the positioning support column, the first flange type pressing positioning disc comprises a flange plate, a limiting column and a first profile block, and the second flange type pressing positioning disc comprises a flange plate, a limiting column and a fifth profile block; the two flange plates are coaxially arranged at one ends of the limiting columns of the two flange type pressing positioning plates, and the other ends of the limiting columns of the two flange type pressing positioning plates penetrate through the positioning support and are fixedly connected with a first profile block and a fifth profile block; the molded surfaces of the first molded surface block and the fifth molded surface block are matched with the external surfaces of the right end socket and the cylinder section of the split metal core mold respectively to realize positioning;
the mounting column is fixed at the center of the upper surface of the tool base through a positioning disc arranged on the bottom surface and is positioned on a central shaft of the positioning support seat; the telescopic supporting rod is installed in the middle of the installation column, the axial direction of the telescopic supporting rod is perpendicular to the axial direction of the installation column and comprises a telescopic end, a supporting rod and a fourth profile block, one end of the supporting rod is fixed on the installation column, the other end of the supporting rod is connected with the fourth profile block through the telescopic end, the profile of the fourth profile block is matched with the inner surface of the barrel section of the split metal core mold, and the telescopic end is adjusted to be in contact with the inner surface of the barrel section of the core mold along the axial displacement, so that the inner profile of the barrel section of the core mold is positioned.
The further technical scheme of the invention is as follows: the tool base is of an octagonal frame structure, 8 radial supporting ribs are uniformly distributed in the tool base along the circumferential direction, one ends of the 8 radial supporting ribs are intersected with the middle point of the tool base, and the other ends of the 8 radial supporting ribs are fixed at 8 inner vertex angles of the octagonal frame; the first connection plate is fixed to an upper surface of the radial support rib by a bolt.
The further technical scheme of the invention is as follows: the middle of the side wall of each supporting plate is provided with a through hole, and the two ends of each supporting plate are respectively connected through hollow steel pipes in a welding mode.
The further technical scheme of the invention is as follows: the octagonal frame is a detachable structure and is formed by fastening and connecting two symmetrical frame structures through bolts; the two symmetrical frame structures take a plane passing through the central axis of the octagonal frame as a symmetrical plane.
The further technical scheme of the invention is as follows: and a reinforcing plate is fixed between the outer side surface of the positioning strut and the upper surface of the second connecting sheet and used for increasing the supporting strength.
The further technical scheme of the invention is as follows: the mounting column is coaxially welded on the upper surface of the positioning disc, and the positioning disc and the tooling base are fastened through screws.
The further technical scheme of the invention is as follows: a first positioning groove matched with the shaft end section of the mounting column is formed in the center of the tool base, a second positioning groove matched with the shaft end section of the mounting column is formed in the center of the mounting column disc, and the first positioning groove and the second positioning groove are coaxial; and the shaft end of the mounting column sequentially penetrates through the second positioning groove and the first positioning groove and then is fixed on the tool base.
The further technical scheme of the invention is as follows: the support rod of the telescopic support rod is of a hollow structure, and one end of the support rod is connected with the mounting column through a bolt; the telescopic end is coaxially inserted into the other end of the support rod, through holes are formed in the telescopic end and the side wall of the support rod, and bolts sequentially penetrate through the corresponding through holes in the support rod and the telescopic end to be fixedly connected with the support rod and the telescopic end.
Advantageous effects
The invention has the beneficial effects that: the fixture is suitable for assembling a large split type metal core mold, the fixture base is fixed on the ground, and the integral structure of the split type metal core mold is fixedly supported by combining the positioning support seat, so that the stability of the assembly fixture is ensured; the positioning of the inner and outer molded surfaces of the split metal core mold is realized through the matching of the positioning support seat, the left end socket positioning seat, the positioning support and the telescopic support rod with the corresponding molded surface blocks respectively, so that the outer surface precision of the split metal core mold is ensured; the installation column and the positioning groove which are coaxial with the split type metal core mold are arranged at the center of the assembly tool, so that the coaxiality of the split type metal core mold is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a tooling base;
FIG. 3 is a schematic view of a positioning support seat;
fig. 4 is a schematic structural diagram of the left head positioning seat;
FIG. 5 is a schematic structural view of a positioning strut;
FIG. 6 is a schematic structural view of the mounting post;
FIG. 7 is a schematic structural view of a pedestal-type pressing positioning plate;
fig. 8 is a schematic structural view of a flange type pressing positioning plate.
Description of reference numerals: 1. a tooling base; 2. positioning a supporting seat; 3. a left end socket positioning seat; 4. positioning the strut; 5. a flange type pressing positioning disc; 6. mounting a column; 7. a telescopic strut; 8. the support type compresses the positioning disc; 9. a first profile piece; 10. a telescopic end; 11. a strut; 12. positioning the disc; 13. a limiting column; 14. a support; 15. a flange plate; 16. a second profile block; 17. a third profile piece; 18. a fourth profile block; 19. an octagonal frame; 20. a first positioning groove; 21. a second positioning groove; 22. a fifth profile block; 23. a pillar; 24. a connecting plate; 25. a support plate; 26. a hollow steel pipe; 27. a reinforcing plate.
Detailed Description
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
As shown in fig. 1 to 8, a large split metal core mold assembly fixture includes: tooling base 1, positioning support seat 2, left head positioning seat 3, positioning support column 4, flange formula compress tightly positioning disk 5, erection column 6, telescopic strut 7, and support formula compresses tightly positioning disk 8.
The positioning support seat 2 is composed of 8 identical support seats, and each support seat comprises 1 connecting plate 24, 2 supporting plates 25, 2 hollow steel pipes 26 and 1 second profile block 16. The connecting plate 24 is positioned at the bottom of the supporting seat and is connected with the tool base 1 through bolts; 2 support plates 25 are positioned above the connecting plate 24, through holes are formed in the middle of the support plates, and 2 hollow steel pipes 26 are arranged between the 2 support plates 25; the second profile block 16 is positioned above the connecting plate 24, and the profile of the second profile block is matched with the profile of the left end socket of the split metal core mould; the connecting plate 24, the support plate 25, the hollow steel tube 26 and the second profile block 16 are welded together.
The left end socket positioning seat 3 consists of 4 support columns 23 and 1 detachable octagonal frame 19. A connecting plate 24 is welded on the upper part and the lower part of each support column 23, each connecting plate is provided with a threaded hole, the upper connecting plate is connected with the octagonal frame 19 through a bolt, and the lower connecting plate is connected with the tool base 1 through a bolt; the octagonal frame 19 is divided into two parts, and the two parts are connected through bolts. And a support type compression positioning disc 8 is arranged on the left end socket positioning seat 3, and the support type compression positioning disc 8 comprises a support 14, a limiting column 13 and a third profile block 17 which is connected with the left end socket positioning seat 3 through a screw. The support type pressing positioning disc 3 rotates to the contact position of the limiting column 13 and the support 14, and the third profile block 17 is in surface contact with the left end socket at the moment, so that the outer profile of the core mould left end socket is positioned.
The positioning support column 4 is connected with the tool base 1 and the ground through bolts, and a reinforcing plate 27 is welded below the positioning support column 4 so as to improve the stability of the positioning support column 4; the flange type pressing positioning plate 5 comprises a flange plate 15, a limiting column 13 and a first profile block 9; the positioning support 4 is connected with the flange type pressing positioning disk 5 through threads. The flange type pressing positioning disc 5 rotates to the contact position of the limiting column 13 and the flange plate 15, and at the moment, the fifth profile block 22 is in contact with the surface of the core mold cylinder section, so that the outer profile of the core mold cylinder section is positioned; the flange type pressing positioning disc 5 rotates to the contact position of the limiting column 13 and the flange plate 15, and the first profile block 9 is in contact with the surface of the right core mould end socket, so that the outer profile of the right core mould end socket is positioned.
A positioning disc 12 and a telescopic support rod 7 are arranged on the mounting column 6, the positioning disc 12 is positioned in the center of the tool base 1, a first positioning groove 20 matched with the cross section of the shaft end of the split type metal core mould connecting shaft is formed in the center of the positioning disc and is connected with the tool base 1 through a screw; the bottom of the mounting column 6 is welded with the positioning disc 12, is positioned in the center of the tool base 1 and is coaxial with the positioning disc 12; the telescopic supporting rod 7 is positioned on the mounting column and comprises a telescopic end 10, a supporting rod 11 and a fourth profile block 18, the telescopic end 10 is stretched to a hole position corresponding to the supporting rod 11, the telescopic end 10 is connected with the supporting rod 11 through a bolt, and the surface of the fourth profile block 18 is in contact with the inner surface of the core mould barrel section, so that the inner profile of the core mould barrel section is positioned.
The application method of the large split type metal core mold assembling tool comprises the following steps: firstly, a tool base 1 and a mounting column 6 are mounted, and then a split type mandrel left connecting shaft is mounted; then installing a positioning support seat 2, a left end socket positioning seat 3 and a support type pressing positioning disc 8, and then installing each split mold of the left end socket of the split core mold; then installing a positioning pillar 4, a flange type pressing positioning plate 5 and a telescopic supporting rod 7, and then installing each split mold of the split core mold cylinder section; then installing split molds of the split core mold right end socket; and finally, a split type core mold right connecting shaft is installed. At this point, the mandrel assembly is complete.
In the embodiment, all parts are made of metal, the mutual matching of the parts ensures the external surface precision of the integral structure of the large split type metal core mold, and the large split type metal core mold has the advantages of easiness in assembly and disassembly, high reusability and the like, and can meet the requirement of the assembly precision of the large split type metal core mold.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a large-scale split type metal mandrel assembly fixture which characterized in that: the fixture comprises a fixture base, a positioning support seat, a left end socket positioning seat, a positioning support, a support type pressing positioning disc, a flange type pressing positioning disc, a mounting column and a telescopic support rod;
the tool base is positioned at the bottom of the whole tool, is fixed on the ground through a connecting sheet arranged along the circumferential direction and is used for supporting and positioning the whole tool;
the positioning support seat is formed by welding a first connecting plate, a support plate and a second profile block, and the first connecting plate is positioned at the bottom and is used for being fixedly connected with the tool base; the second profile block is fixed right above the first connecting plate through a supporting plate, and the profile of the upper surface of the second profile block is matched with the profile of the left end socket of the split metal core mould; the 8 positioning supporting seats are uniformly distributed on the upper surface of the tool base along the circumferential direction, are fastened with the tool base through first connecting plates and are used for supporting the split type metal core mold;
the left end socket positioning seat comprises a support column and an octagonal frame, the octagonal frame is fixed right above the tool base through a plurality of support columns, and the octagonal frame is axially vertical to the tool base; the plurality of supporting columns are uniformly distributed on the periphery of the positioning supporting seat and are coaxial; the plurality of the support type compaction positioning discs are uniformly distributed on the upper surface of the octagonal frame along the circumferential direction and comprise a support, a limiting column and a third profile block, and the support is fixedly connected with the octagonal frame through screws; the third profile block is arranged on one side of the support through a limiting column, and the profile of the third profile block is matched with the split type metal core mould left end socket so as to position the outer profile of the split type metal core mould left end socket;
the positioning pillars are uniformly distributed on the periphery of the octagonal frame along the circumferential direction, and the bottom surfaces of the positioning pillars are fixedly connected with the tool base and the ground through second connecting sheets and bolts; the two flange type pressing positioning discs are respectively arranged above and in the middle of the positioning support column, the first flange type pressing positioning disc comprises a flange plate, a limiting column and a first profile block, and the second flange type pressing positioning disc comprises a flange plate, a limiting column and a fifth profile block; the two flange plates are coaxially arranged at one ends of the limiting columns of the two flange type pressing positioning plates, and the other ends of the limiting columns of the two flange type pressing positioning plates penetrate through the positioning support and are fixedly connected with a first profile block and a fifth profile block; the molded surfaces of the first molded surface block and the fifth molded surface block are matched with the external surfaces of the right end socket and the cylinder section of the split metal core mold respectively to realize positioning;
the mounting column is fixed at the center of the upper surface of the tool base through a positioning disc arranged on the bottom surface and is positioned on a central shaft of the positioning support seat; the telescopic supporting rod is installed in the middle of the installation column, the axial direction of the telescopic supporting rod is perpendicular to the axial direction of the installation column and comprises a telescopic end, a supporting rod and a fourth profile block, one end of the supporting rod is fixed on the installation column, the other end of the supporting rod is connected with the fourth profile block through the telescopic end, the profile of the fourth profile block is matched with the inner surface of the barrel section of the split metal core mold, and the telescopic end is adjusted to be in contact with the inner surface of the barrel section of the core mold along the axial displacement, so that the inner profile of the barrel section of the core mold is positioned.
2. The large split type metal core mold assembling tool according to claim 1, characterized in that: the tool base is of an octagonal frame structure, 8 radial supporting ribs are uniformly distributed in the tool base along the circumferential direction, one ends of the 8 radial supporting ribs are intersected at the middle point of the tool base, and the other ends of the 8 radial supporting ribs are fixed at 8 inner vertex angles of the octagonal frame; the first connection plate is fixed to an upper surface of the radial support rib by a bolt.
3. The large split type metal core mold assembling tool according to claim 1, characterized in that: the middle of the side wall of each supporting plate is provided with a through hole, and the two ends of each supporting plate are respectively connected through hollow steel pipes in a welding mode.
4. The large split type metal core mold assembling tool according to claim 1, characterized in that: the octagonal frame is a detachable structure and is formed by fastening and connecting two symmetrical frame structures through bolts; the two symmetrical frame structures take a plane passing through the central axis of the octagonal frame as a symmetrical plane.
5. The large split type metal core mold assembling tool according to claim 1, characterized in that: and a reinforcing plate is fixed between the outer side surface of the positioning strut and the upper surface of the second connecting sheet and used for increasing the supporting strength.
6. The large split type metal core mold assembling tool according to claim 1, characterized in that: the mounting column is coaxially welded on the upper surface of the positioning disc, and the positioning disc and the tooling base are fastened through screws.
7. The large split type metal core mold assembling tool according to claim 1, characterized in that: a first positioning groove matched with the shaft end section of the mounting column is formed in the center of the tool base, a second positioning groove matched with the shaft end section of the mounting column is formed in the center of the mounting column disc, and the first positioning groove and the second positioning groove are coaxial; and the shaft end of the mounting column sequentially penetrates through the second positioning groove and the first positioning groove and then is fixed on the tool base.
8. The large split type metal core mold assembling tool according to claim 1, characterized in that: the support rod of the telescopic support rod is of a hollow structure, and one end of the support rod is connected with the mounting column through a bolt; the telescopic end is coaxially inserted into the other end of the support rod, through holes are formed in the telescopic end and the side wall of the support rod, and bolts sequentially penetrate through the corresponding through holes in the support rod and the telescopic end to be fixedly connected with the support rod and the telescopic end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248293.5A CN113001451B (en) | 2021-03-07 | 2021-03-07 | Large-scale split type metal mandrel assembly fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110248293.5A CN113001451B (en) | 2021-03-07 | 2021-03-07 | Large-scale split type metal mandrel assembly fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113001451A CN113001451A (en) | 2021-06-22 |
| CN113001451B true CN113001451B (en) | 2022-07-05 |
Family
ID=76407604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110248293.5A Active CN113001451B (en) | 2021-03-07 | 2021-03-07 | Large-scale split type metal mandrel assembly fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113001451B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4783232A (en) * | 1983-09-02 | 1988-11-08 | Allied-Signal Inc. | Filament winding using a rotationally molded inner layer |
| CN202037567U (en) * | 2011-03-11 | 2011-11-16 | 山东核电设备制造有限公司 | Large container sealing end assembly tooling |
| CN103047478B (en) * | 2013-01-21 | 2015-05-20 | 葛洲坝集团第二工程有限公司 | In-hole sectioning installation method for penstocks with overlarge diameters |
| CN203401422U (en) * | 2013-06-07 | 2014-01-22 | 山东核电设备制造有限公司 | Tool for assembling and measurement of integrated reactor roof assembly |
| FR3043006B1 (en) * | 2015-10-30 | 2018-04-06 | Constructions Industrielles De La Mediterranee Cnim | DETACHABLE HOLLOW METAL CHUCK FOR WINDING OF COMPOSITE CAPACITY, SUCH AS A PULSE POWDER RESERVOIR OF A ROCKER |
| CN110355333B (en) * | 2019-08-21 | 2021-01-05 | 西北工业大学 | Metal core mold structure for forming solid rocket engine shell |
-
2021
- 2021-03-07 CN CN202110248293.5A patent/CN113001451B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113001451A (en) | 2021-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113650199B (en) | Split type composite material core mold for winding solid rocket engine shell | |
| CN113001451B (en) | Large-scale split type metal mandrel assembly fixture | |
| CN109514707B (en) | Steel form convenient to assemble and dismantle | |
| CN112276122B (en) | Thin-wall ellipsoidal top inner and outer circle end face composite turning device and method | |
| CN211548750U (en) | Cylindrical wallboard formwork support | |
| CN111360473A (en) | Internal support positioning device suitable for circumferential seam welding of bottom of rocket tank | |
| CN112476332A (en) | Adjustable bearing dismounting device and dismounting method | |
| CN215546012U (en) | High altitude welding position device | |
| CN212265699U (en) | Special tool for disassembling and assembling bypass valve servomotor | |
| CN110434803B (en) | Axle sleeve loading and unloading frock for immersible pump | |
| CN213072372U (en) | Damping ring winding tool for permanent magnet synchronous motor | |
| CN111152476A (en) | Ultra-large type barrel winding forming die | |
| CN217326450U (en) | Large-section upright post formwork device | |
| CN118002960A (en) | Large-size thin-wall revolving body cabin welding device and assembly method | |
| CN215970163U (en) | Lining plastic forming tool assembly suitable for concentric reducing pipe | |
| CN216682669U (en) | General frock in assembled wallboard drawing die hole | |
| CN114770820A (en) | Full-composite split core mold for solid rocket engine shell and method | |
| CN215038534U (en) | PC component line box activity frock | |
| CN212122194U (en) | Internal support positioning device suitable for circumferential seam welding of bottom of rocket tank | |
| CN220407901U (en) | Combined machining tool for front section of composite material thin-wall large-opening engine shell | |
| CN217044444U (en) | Opening device of sleeve pipe assembling die | |
| CN216070355U (en) | Fixing structure for yoke plate of steering gear | |
| CN212921427U (en) | Enclose door rotating-structure | |
| CN215237200U (en) | Station-adjustable stamping device for producing precise corrosion-resistant building steel structural member | |
| CN211850935U (en) | Assembly type three-dimensional adjustable assembling jig frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |