CN114951717B - Clamping device and machining equipment for curved thin-wall elastic piece - Google Patents
Clamping device and machining equipment for curved thin-wall elastic piece Download PDFInfo
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- CN114951717B CN114951717B CN202210750668.2A CN202210750668A CN114951717B CN 114951717 B CN114951717 B CN 114951717B CN 202210750668 A CN202210750668 A CN 202210750668A CN 114951717 B CN114951717 B CN 114951717B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
-
- 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
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Abstract
The invention discloses a clamping device and machining equipment for a curved thin-wall elastic piece, belonging to the technical field of machining of curved thin-wall elastic pieces, and comprising a base and an end cover; the end cover is fixedly connected to the base, and a first adjusting block is slidably connected along the edge of the end cover; the base is fixedly connected with a plurality of pressing plates, a plurality of positioning blocks and a plurality of inner circle expansion blocks; the pressing plates are circumferentially distributed along the small end mounting edge of the part to be processed; the positioning blocks are circumferentially distributed along the installation edge of the large end of the part to be processed, the positioning blocks are slidably connected with second adjusting blocks, and the second adjusting blocks are matched with the first adjusting blocks and used for fixing the large end of the part to be processed; the inner circle expansion blocks are circumferentially distributed along the inner circle of the part to be processed. The problem of among the prior art because curved surface thin wall elastic component casing thickness, intensity low lead to the part produce deformation easily when the clamping and produce during processing that the installation limit warp or let the sword, shake the sword, can not reach the processing requirement is solved.
Description
Technical Field
The invention belongs to the technical field of machining of curved thin-wall elastic pieces, relates to a clamping device and machining equipment of the curved thin-wall elastic pieces, and particularly relates to a clamping device and machining equipment of a front guide disc of an aero-engine disc.
Background
The thin-wall plate welding parts have wide application in aviation and aerospace fields due to the advantages of light weight, low manufacturing cost and the like, but the thin-wall plate welding parts have low structural strength, and the wall thickness of the shell is basically within 1 mm.
In the prior art, the part is pressed by a pressing plate bolt basically, and the part is fixed by the pressing plate by using the bolt, so that the part is ensured not to move in the processing process. The compression method is realized by extremely large pressure load on the mounting edge, the influence caused by compression of the pressing plate can be ignored by the rigid part, but for thin-wall plate welding parts, the large compression force can cause obvious deformation of the parts.
Referring to fig. 1, the front-disk baffle welding assembly is a member formed by welding a small end mounting edge, a large end mounting edge and a shell through argon arc welding, and is made of high-temperature alloy (GH 4169), and two argon arc welding girth welds are arranged on the member. The large end mounting edge is a double-layer mounting edge with a groove, the wall thickness of the mounting edge is thin, the depth of the groove is large, the thickness of the mounting edge is 1.5mm, the wall thickness tolerance is 0.1mm, the groove depth of the mounting edge is 10mm, the shell is a curved thin-wall sheet metal part, the wall thickness of a part is only 0.8mm, the curved surface profile is high in elasticity and low in strength, and the problem that the part is easy to generate clamping deformation during clamping is very easy to cause; the welding assembly of the guide plate before the disc is used for turning the upper surface and the lower surface of the large-end installation edge or in the grooving process, as the assembly shell is a curved thin-wall sheet metal part, the strength is extremely low, whether the upper end surface or the lower end surface of the installation edge is pressed by a pressing plate, the shell can generate obvious elastic deformation due to slight pressing force, rebound is generated after the assembly is removed after the assembly is machined, and the assembly machining state and the assembly state are inconsistent and cannot meet the design requirement. Secondly, if the clamping design is unreasonable, the mounting edge is easy to deform or the cutter is easy to be deformed in the machining process, the machining requirement cannot be met, and the components cannot be assembled in the assembling process.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, parts are easy to generate clamping deformation due to the thickness and low strength of the shell of a curved thin-wall elastic part, and installation edge deformation or cutter yielding is easy to generate in the process of machining, so that the machining requirement cannot be met.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention provides a clamping device of a curved thin-wall elastic piece, which comprises a base and an end cover; the end cover is fixedly connected to the base through a plurality of first guide posts, and a plurality of first adjusting blocks are slidably connected along the edge of the end cover; the base is fixedly connected with a plurality of pressing plates, a plurality of positioning blocks and a plurality of inner circle expansion blocks; the pressing plates are circumferentially distributed along the mounting edge of the small end of the part to be processed and are used for fixing the small end of the part to be processed; the positioning blocks are circumferentially distributed along the installation edge of the large end of the part to be processed, the positioning blocks are slidably connected with second adjusting blocks, and the second adjusting blocks are matched with the first adjusting blocks and used for fixing the large end of the part to be processed; the inner circle expansion blocks are circumferentially distributed along the inner circle of the part to be processed and used for tightly supporting the inner circle of the part to be processed.
Preferably, the first adjusting block is provided with a first through hole along the vertical direction, and a first screw is arranged in the first through hole and used for fixing and adjusting the height of the first adjusting block.
Preferably, the second adjusting block is provided with a second through hole along the vertical direction, and a second screw is arranged in the second through hole and used for fixing and adjusting the height of the second adjusting block.
Preferably, a second guide post is arranged between the second adjusting block and the positioning block.
Preferably, the second guide post is a spring guide post.
Preferably, the inner circle expansion blocks are eight arc expansion blocks.
Preferably, the end cap is connected to the first guide post by a compression nut.
Preferably, the end surface of the first guide pillar connected with the base is a flange end surface, which is used for improving the connection strength and the assembly verticality of the first guide pillar and the base.
Preferably, the number of the first adjusting blocks, the second adjusting blocks and the positioning blocks is greater than sixteen.
A mechanical processing device for a curved thin-wall elastic piece comprises the clamping device.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a clamping device for a curved thin-wall elastic piece, which is characterized in that the stress-free clamping and fixing of the large end of a part to be clamped are realized by the aid of self gravity of a first adjusting block and the cooperation of the self gravity of the first adjusting block and a second adjusting block through the bidirectional adjustable clamping arrangement of the first adjusting block and the second adjusting block; the stress-free clamping and fixing of the inner circle of the part to be clamped are realized through the arrangement of the inner circle expansion block structure; the stress-free clamping and fixing of the small end of the part to be clamped are realized through the arrangement of the pressing plate; the whole front-disc guide plate assembly is further stress-free to clamp and fix, and can be used repeatedly, compared with the clamping method in the prior art, the clamping deformation problem of the curved thin-wall elastic assembly during clamping is solved, and the cutter yielding and vibrating problem caused by unreasonable clamping design are solved; the reworking and scrapping losses of product processing are avoided, the labor intensity is reduced, and the processing quality is remarkably improved.
The arrangement of the spring guide post realizes the automatic resetting of the second adjusting block, and the installation of the first adjusting block is matched, so that the effectiveness of clamping is further improved, the pressure born in the assembly installation process is further reduced, and the deformation of parts in the clamping process is further avoided.
The flange surface at the bottom end of the guide post can effectively improve the welding length of the guide post and the base, so that the fixing strength of the guide post and the base is improved; meanwhile, the assembly verticality between the guide post and the base can be improved, and the positioning precision and the clamping precision of the part to be clamped are improved.
The mechanical processing equipment for the curved thin-wall elastic piece comprising the clamping device can effectively realize accurate positioning and clamping of the piece, avoid the problem that the piece cannot be assembled due to deformation caused by unreasonable clamping design, improve the machining efficiency by about 90% through inspection, reduce the occurrence of the problems of cutter yielding and cutter vibrating caused by clamping deformation of the piece, effectively improve the machining quality, improve the qualification rate of the piece machining, and further reduce the machining cost, and is an innovative technology in the technical field of mechanical processing of the curved thin-wall elastic piece.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of the front baffle assembly of the part to be machined according to the present invention.
FIG. 2 is a partial cross-sectional view of a front baffle assembly of the clamping device chuck for curved thin-walled elastomeric members of the present invention.
The device comprises a 1-1-small end mounting edge, a 1-2-shell, a 1-3 large end mounting edge, a 1-4-upper end surface, a 1-5-mounting edge groove, a 1-6-lower end surface, a 2-1-base, a 2-2-inner circle expansion block, a 2-3-first guide pillar, a 2-4-end cover, a 2-5-compression nut, a 2-6-first adjusting block, a 2-7-first screw, a 2-8-second adjusting block, a 2-9-second screw, a 2-10-second guide pillar, a 2-11-positioning block, a 2-12-third screw and a 2-13-pressing plate.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention is described in further detail below with reference to the attached drawing figures:
referring to fig. 2, the invention provides a clamping device for a curved thin-wall elastic piece, which comprises a base 2-1, wherein the base 2-1 is connected with an end cover 2-4 through a plurality of first guide posts 2-3, and the number of the first guide posts 2-3 is more than four; the bushing is designed in the hole of the end cover 2-4, so that the end cover 2-4 is ensured to be concentric with the fixture spigot, and a plurality of first adjusting blocks 2-6 are slidably connected along the edge of the end cover 2-4; the first adjusting block 2-6 is provided with a first through hole along the vertical direction, and a first screw 2-7 is arranged in the first through hole and used for fixing and adjusting the height of the first adjusting block 2-6; the base 2-1 is fixedly connected with a plurality of pressing plates 2-13, a plurality of positioning blocks 2-11 and a plurality of inner circle expansion blocks 2-2; the number of the pressing plates 2-13 is greater than 8, and the pressing plates 2-13 are fixedly connected to the base 2-1 through third screws 2-12, are circumferentially distributed along the small end mounting edge 1-1 of the part to be processed and are used for fixing the small end of the part to be processed; the positioning blocks 2-11 are circumferentially distributed along the large end mounting edge 1-3 of the part to be processed, the positioning blocks 2-11 are fixedly connected with second guide posts 2-10, the second guide posts 2-10 are spring guide posts, and the end parts of the second guide posts 2-10 are slidably connected with second adjusting blocks 2-8; the second adjusting block 2-8 is provided with a second through hole along the vertical direction, and a second screw 2-9 is arranged in the second through hole and used for fixing and adjusting the height of the second adjusting block 2-8; the second adjusting block 2-8 is matched with the first adjusting block 2-6 to fix the large end of the part to be processed; the inner circle expansion blocks 2-2 are eight arc expansion blocks and are circumferentially distributed along the inner circle of the part to be processed and used for tightly supporting the inner circle of the part to be processed; the number of the first adjusting blocks 2-6, the second adjusting blocks 2-8 and the positioning blocks 2-11 is more than sixteen.
Preferably, the end cover 2-4 is connected with the first guide post 2-3 through a compression nut 2-5, and the end surface of the first guide post 2-3 connected with the base 2-1 is a flange end surface, so as to improve the connection strength and the assembly verticality of the first guide post 2-3 and the base 2-1.
The invention provides a machining device for a curved thin-wall elastic piece comprising the clamping device. The equipment can realize accurate positioning and effective clamping of the curved thin-wall elastic piece to be processed, and avoid the problems of cutter yielding and cutter vibrating caused by inaccurate clamping and positioning of the clamp and deformation of the curved thin-wall elastic piece caused by clamping. Meanwhile, the problems that parts in a free state rebound and are difficult to assemble and the like in the assembling process are avoided, reworking and scrapping losses of product processing are reduced, meanwhile, labor intensity is reduced, and processing quality is remarkably improved.
Referring to fig. 1 and 2, when in use, a part to be processed, namely a front-disc guide plate assembly, is arranged in a tool spigot of a base 2-1, a small end mounting edge 1-1 is pre-compacted by a pressing plate 2-13 and a screw 14, the inner circle of a component shell 1-2 is braced by an inner circle expansion block 2, the outer circle of the small end mounting edge of an alignment part is jumped to be within 0.02mm in a point-to-point manner, the end is jumped to be within 0.03mm, and the small end mounting edge 1-1 is compacted;
the second adjusting block 2-8 is pressed into the second guide post 12 downwards, the distance between the second adjusting block 2-8 and the lower end face 1-6 of the large end installation edge 1-3 of the part to be processed is proper, turning tool turning is not interfered, and the second screw 2-9 is locked.
The end cover 2-4 is arranged in a matching hole of the first guide post 2-3, the compression nut 5 is locked, the first screw 2-7 is adjusted, the first adjusting block 2-6 freely falls on the upper end face 1-4 of the large end installation edge 1-3 of the part to be processed, after the pasting is guaranteed, the first screw 2-7 is locked, the lower end face 1-6 of the large end installation edge 1-3 is turned, and the height dimension of the lower end face 1-6 of the large end installation edge 1-3 from the bottom face of the small end installation edge 1-1 is guaranteed to be qualified.
Loosening the second screw 2-9 to enable the second adjusting block 2-8 to freely slide to the lower end face 1-6 of the large end mounting edge 1-3 of the part to be processed under the action of the spring guide post, and locking the second screw 2-9 after the lower end face 1-6 is completely attached; the first screw 27 and the compression nut 2-5 are loosened, the end cover 2-4 is removed, and the upper end face 1-4 of the large end mounting edge 1-3 of the assembly is turned. Ensuring that the 1-3 thickness dimension of the large end mounting edge is qualified
The end cover 2-4 is arranged in the matching hole of the first guide post 3, the compression nut 5 is locked, the first regulating block 2-6 freely falls on the upper end face of the large end installation edge 1-3 of the part to be processed, after the fitting is guaranteed, the screw 7 is locked, the installation edge groove 1-5 of the part to be processed is turned, the groove width, the installation edge thickness and the groove root arc size are guaranteed, and the clamping and processing of the part to be processed are completed.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The clamping device of the curved thin-wall elastic piece is characterized by comprising a base (2-1) and an end cover (2-4); the end cover (2-4) is fixedly connected to the base (2-1) through a plurality of first guide posts (2-3), a plurality of first adjusting blocks (2-6) are slidably connected along the edge of the end cover (2-4), and the end cover (2-4) is connected with the first guide posts (2-3) through compression nuts (2-5); the first adjusting block (2-6) is provided with a first through hole along the vertical direction, and a first screw (2-7) is arranged in the first through hole and used for fixing and adjusting the height of the first adjusting block (2-6); the base (2-1) is fixedly connected with a plurality of pressing plates (2-13), a plurality of positioning blocks (2-11) and a plurality of inner circle expansion blocks (2-2); the pressing plates (2-13) are circumferentially distributed along the small end mounting edge (1-1) of the part to be processed and are used for fixing the small end of the part to be processed, and the part to be processed is an aeroengine disk front guide plate assembly; the positioning blocks (2-11) are circumferentially distributed along the large end mounting edge (1-3) of the part to be processed, the positioning blocks (2-11) are slidably connected with second adjusting blocks (2-8), the second adjusting blocks (2-8) and the first adjusting blocks (2-6) are matched and used for fixing the large end of the part to be processed, the first adjusting blocks are contacted with the upper end face (1-4) of the large end mounting edge (1-3) of the part to be processed, and the second adjusting blocks (2-8) are contacted with the lower end face (1-6) of the large end mounting edge (1-3) of the part to be processed; the second adjusting block (2-8) is provided with a second through hole along the vertical direction, and a second screw (2-9) is arranged in the second through hole and is used for fixing and adjusting the height of the second adjusting block (2-8); a second guide column (2-10) is arranged between the second adjusting block (2-8) and the positioning block (2-11), and the second guide column (2-10) is a spring guide column; the inner circle expansion blocks (2-2) are circumferentially distributed along the inner circle of the part to be processed and are used for tightly supporting the inner circle of the part to be processed.
2. The clamping device of the curved thin-wall elastic piece according to claim 1, wherein the inner circle expansion block (2-2) is eight arc expansion blocks.
3. The clamping device of the curved thin-wall elastic piece according to claim 1, wherein the connecting end surface of the first guide post (2-3) and the base (2-1) is a flange end surface, so as to improve the connecting strength and the assembly perpendicularity of the first guide post (2-3) and the base (2-1).
4. A clamping device for a curved thin-walled elastic component according to any of claims 1-3, characterized in that the number of the first adjusting blocks (2-6), the second adjusting blocks (2-8) and the positioning blocks (2-11) is greater than sixteen.
5. A device for machining a curved thin-walled elastic component, comprising a clamping device according to any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210750668.2A CN114951717B (en) | 2022-06-29 | 2022-06-29 | Clamping device and machining equipment for curved thin-wall elastic piece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210750668.2A CN114951717B (en) | 2022-06-29 | 2022-06-29 | Clamping device and machining equipment for curved thin-wall elastic piece |
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| CN114951717A CN114951717A (en) | 2022-08-30 |
| CN114951717B true CN114951717B (en) | 2023-10-20 |
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| CN114951717A (en) | 2022-08-30 |
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