CN114226896A - Positioning and clamping fixture for arc-shaped parts - Google Patents
Positioning and clamping fixture for arc-shaped parts Download PDFInfo
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- CN114226896A CN114226896A CN202111488327.4A CN202111488327A CN114226896A CN 114226896 A CN114226896 A CN 114226896A CN 202111488327 A CN202111488327 A CN 202111488327A CN 114226896 A CN114226896 A CN 114226896A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
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Abstract
The invention discloses a positioning and clamping fixture for an arc-shaped part, which is characterized in that an arc-shaped positioning piece and an arc surface of the arc-shaped part are mutually attached, and a limiting piece abuts against the arc-shaped part, so that the arc-shaped part is accurately positioned, the positioning precision of the arc-shaped part is improved, and the processing quality is improved; the arc-shaped positioning piece is elastically pressed by the pressing piece so that the arc-shaped part is fixed on the arc-shaped positioning piece, the operation is simple, and the processing efficiency is high; the arc-shaped positioning piece is detachably connected with the positioning seat, so that the size of the arc-shaped positioning piece can be correspondingly changed along with the size change of the arc surface of the arc-shaped part, the modular design is realized, the research and development design period of the clamp is further reduced, the research and development cost is reduced, and the processing efficiency of the arc-shaped part is improved; on the lathe of location base was fixed in processing, will fix a position the fixed positioning on the location base of the locating component of arc part through the benchmark piece, realize fixing a position the arc part outside the lathe, the arc part's of being convenient for quick replacement reduces the processing cost.
Description
Technical Field
The invention relates to the technical field of machining of arc-shaped parts in aircraft engines, in particular to a positioning and clamping fixture for arc-shaped parts.
Background
The aircraft engine is regarded as the heart of the aircraft, is known as the bright pearl on the industrial crown, and is a product with the highest technical integration level and the most complex. The engine mainly comprises three core components of a compressor, a combustion chamber and a turbine and some accessory equipment. The compressor sucks air into the engine and compresses the air, the compressed air enters the combustion chamber and then is fully mixed with fuel oil and combusted, and then high-temperature and high-pressure gas is generated to push the turbine blades to rotate.
The structure component is mainly used for isolating high-temperature gas and supporting the integral gas path sealing structure of the casing. In the design of the engine, the airflow loss needs to be reduced as much as possible in order to improve the pressure increase ratio and the turbine efficiency, because the thrust of the engine is increased by 1% and the fuel consumption is reduced by 0.1% when the sealing leakage is reduced by 1%.
However, the existing machining method of the turbine outer ring sealing groove adopts an assembling clamp, a part is mainly supported on the mounting surface of the assembling clamp by the supporting surface, then the other end fixing surface of the part adopts a pressing plate to clamp the part, finally, a reference surface is marked on an electric spark machine tool, and then the sealing groove is machined, but the method has low machining efficiency and unstable quality.
Mainly because the above method has the following problems:
1) the turbine outer ring electric spark machining sealing groove has high dimensional precision requirement, and the qualified rate of the machining by adopting the existing assembling clamp is less than 70%.
2) The turbine outer ring part is arc-shaped in appearance, the repeated positioning error is large by adopting the assembling clamp, the installation and clamping are troublesome, the processing preparation time is long, and the efficiency is low.
3) The structure of the turbine outer ring part is similar, however, the currently used tooling does not adopt a modular design, and each turbine outer ring needs to be designed and manufactured with a corresponding positioning clamp, so that the manufacturing cost is high.
4) Only one part can be processed by one-time clamping, and the processing efficiency is low.
Disclosure of Invention
The invention provides a positioning and clamping fixture for arc-shaped parts, which aims to solve the technical problems of low processing efficiency, unstable quality and high cost of the existing arc-shaped parts such as turbine outer rings and the like.
According to one aspect of the invention, a positioning and clamping fixture for arc-shaped parts is provided, which comprises a positioning base, a reference sheet movably arranged on the positioning base and a positioning assembly connected with the reference sheet; the positioning assembly comprises a positioning seat arranged on the reference sheet, an arc positioning piece detachably connected with the positioning seat and used for positioning the arc part through the arc surface fit with the arc part, a limiting piece connected with the arc positioning piece and used for limiting the arc part through the end face of one end abutting against the arc part, and a pressing piece connected with the arc positioning piece and used for realizing the clamping and fixing of the arc part through pressing the arc positioning piece.
Further, the arc positioning piece includes the arc lateral wall and follows the inside sunken arc constant head tank that is used for through the arc surface laminating with the arc part in order to realize the location of arc part of formation of circumference of arc lateral wall.
Further, along vertical the setting with the elastic clearance of arc constant head tank intercommunication on the arc setting element, the last one side that is close to the positioning seat of arc setting element has seted up and has compressed tightly the screw hole, compress tightly screw hole intercommunication elastic clearance, the last one side of keeping away from the positioning seat of arc setting element has seted up and has compressed tightly the connecting hole that the screw hole corresponds the laying, connecting hole intercommunication elastic clearance, compress tightly the piece including wear to locate the connecting hole and with compress tightly the fixed housing screw of screw hole threaded connection be used for through pressfitting elastic clearance in order to realize the arc part.
Furthermore, the arc-shaped positioning piece is vertically provided with an elastic hole communicated with the elastic gap, and the diameter of the elastic hole is larger than the gap width of the elastic gap and is used for improving the elastic deformation amplitude of the arc-shaped positioning piece.
Furthermore, the positioning seat comprises a bottom plate fixed on the reference plate and a side plate vertically arranged on the bottom plate and connected with the arc-shaped positioning piece.
Furthermore, the positioning assembly further comprises a cylindrical pin, a diamond pin, a connecting screw and a fixing nut, wherein the cylindrical pin is respectively in plug-in fit with the side plate and the arc positioning piece and is used for positioning the arc positioning piece on the side plate, the diamond pin is respectively in plug-in fit with the side plate and the arc positioning piece and is used for positioning the arc positioning piece on the side plate, the connecting screw is movably connected with the side plate and penetrates through the arc positioning piece, and the fixing nut is in threaded connection with the connecting screw and is used for pressing the arc positioning piece to fix the arc positioning piece on the side plate through rotation.
Furthermore, the locating component also comprises a locating pin which is respectively in plug-in fit with the bottom plate and the side plate and is used for locating the side plate on the bottom plate, and a fixing screw which is arranged on the bottom plate in a penetrating way and is in threaded connection with the side plate and is used for fixing the side plate on the bottom plate.
Further, the locating part is laid at the top of arc setting element, and the one end that the locating part is close to the arc lateral wall is equipped with in a concave manner and is used for holding the arc part and through supporting the spacing groove of arc part in order to realize the location of arc part, and the tank bottom and the positioning seat parallel of spacing groove are laid and are used for supporting the arc part.
Furthermore, a kidney-shaped groove is vertically formed in the upper edge of the locating part, an adjusting hole which is correspondingly arranged in the kidney-shaped groove is vertically and concavely arranged in the top of the arc-shaped locating piece, and the locating component further comprises an adjusting screw which penetrates through the kidney-shaped groove and is in threaded connection with the adjusting hole.
Furthermore, the positioning and clamping fixture further comprises a reference plate and a plurality of positioning bases arranged on the reference plate, and the positioning bases, the reference sheets and the positioning assemblies are correspondingly arranged one by one.
The invention has the following beneficial effects:
according to the positioning and clamping fixture for the arc-shaped part, firstly, the positioning and fixing of the arc-shaped part are sequentially completed through the positioning assembly, the positioning assembly is firstly mutually attached to the arc surface of the arc-shaped part through the arc positioning piece to realize the positioning of the arc-shaped part, then the limiting piece is abutted against one end face of the arc-shaped part to realize the limiting of the arc-shaped part, in the positioning process, the arc positioning piece and the limiting piece are mutually matched to realize the accurate positioning of the arc-shaped part, the positioning precision of the arc-shaped part is improved, the machining quality is further improved, finally, the arc positioning piece is pressed through the pressing piece to clamp the arc-shaped part, so that the arc-shaped part is clamped and fixed, and compared with the existing pressing plate pressing mode, the positioning and clamping fixture is simple in operation and high in machining efficiency; then, arranging the positioning base on a machine tool for processing, and fixing the positioning assembly on the positioning base through the reference sheet to finish the processing of the arc-shaped part; the arc positioning piece is detachably connected with the positioning seat, so that the size of the arc positioning piece can be correspondingly changed along with the size change of the arc surface of the arc part, the modular design is realized, namely the same positioning assembly can realize the positioning of the arc parts of the same type and different sizes only by replacing the arc positioning piece, the research and development design period of the clamp is further reduced, the research and development cost is reduced, and the processing efficiency of the arc part is improved; the positioning base is fixed on the machine tool for machining, then the positioning assembly for fixing and positioning the arc-shaped part is fixed and positioned on the positioning base through the reference sheet, the arc-shaped part is fixed and positioned outside the machine tool, the arc-shaped part is convenient to replace quickly, and machining cost is reduced. The arc part of this scheme is with location clamping anchor clamps passes through arc setting element and locating part realization arc part's accurate location, promotes processingquality, and the mode that rethread elasticity compressed tightly simplifies the clamping operation, improves machining efficiency, and through the modularized design between positioning seat and the arc setting element at last, the design research and development cost of reduction arc part anchor clamps improves machining efficiency simultaneously.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a positioning and clamping fixture for arc-shaped parts according to a preferred embodiment of the invention;
FIG. 2 is an exploded view of a positioning assembly of the positioning and clamping fixture for arc-shaped parts according to the preferred embodiment of the invention;
FIG. 3 is a partial cross-sectional view of an arc-shaped positioning member of the positioning and clamping fixture for arc-shaped parts according to the preferred embodiment of the invention;
FIG. 4 is a partial cross-sectional view of a positioning assembly in a positioning and clamping fixture for arcuate parts in accordance with a preferred embodiment of the present invention;
fig. 5 is a schematic structural view of a positioning and clamping fixture for arc-shaped parts according to a preferred embodiment of the invention.
Illustration of the drawings:
1. a positioning base; 2. a reference sheet; 3. a positioning assembly; 31. positioning seats; 311. a base plate; 312. a side plate; 32. an arc-shaped positioning piece; 321. an arc-shaped positioning groove; 322. an elastic gap; 323. an elastic hole; 33. a limiting member; 331. a limiting groove; 332. a kidney-shaped groove; 34. a compression member; 35. a cylindrical pin; 36. a diamond pin; 37. connecting a screw rod; 38. fixing a nut; 39. an adjusting screw; 4. a reference plate.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.
FIG. 1 is a schematic structural view of a positioning and clamping fixture for arc-shaped parts according to a preferred embodiment of the invention; FIG. 2 is an exploded view of a positioning assembly of the positioning and clamping fixture for arc-shaped parts according to the preferred embodiment of the invention; FIG. 3 is a partial cross-sectional view of an arc-shaped positioning member of the positioning and clamping fixture for arc-shaped parts according to the preferred embodiment of the invention; FIG. 4 is a partial cross-sectional view of a positioning assembly in a positioning and clamping fixture for arcuate parts in accordance with a preferred embodiment of the present invention; fig. 5 is a schematic structural view of a positioning and clamping fixture for arc-shaped parts according to a preferred embodiment of the invention.
As shown in fig. 1 to 5, the positioning and clamping fixture for arc-shaped parts of the present embodiment includes a positioning base 1, a reference plate 2 movably mounted on the positioning base 1, and a positioning assembly 3 connected to the reference plate 2; the positioning assembly 3 includes a positioning seat 31 installed on the reference plate 2, an arc positioning member 32 detachably connected with the positioning seat 31 and used for positioning the arc part by fitting with the arc surface of the arc part, a limiting member 33 connected with the arc positioning member 32 and used for limiting the arc part by abutting against the end surface of one end of the arc part, and a pressing member 34 connected with the arc positioning member 32 and used for fixing the arc part by pressing the arc positioning member 32. Specifically, according to the positioning and clamping fixture for the arc-shaped part, firstly, the positioning and fixing of the arc-shaped part are sequentially completed through the positioning assembly 3, the positioning assembly 3 is firstly attached to the arc surface of the arc-shaped part through the arc positioning piece 32 to achieve the positioning of the arc-shaped part, then the limiting piece 33 abuts against one end face of the arc-shaped part to achieve the limiting of the arc-shaped part, in the positioning process, the arc positioning piece 32 and the limiting piece 32 are matched with each other to achieve the accurate positioning of the arc-shaped part, the positioning accuracy of the arc-shaped part is improved, the machining quality is improved, finally, the arc positioning piece 32 is pressed through the pressing piece 34, the arc positioning piece 32 is further clamped with the arc-shaped part, the arc-shaped part is clamped and fixed, and compared with the existing pressing plate pressing mode, the operation is simple, and the machining efficiency is high; then, arranging the positioning base 1 on a machine tool for processing, and fixing the positioning assembly 3 on the positioning base 1 through the reference sheet 2 to complete the processing of the arc-shaped part; the arc positioning piece 32 is detachably connected with the positioning seat 31, so that the size of the arc positioning piece 32 can be correspondingly changed along with the size change of the arc surface of the arc part, the modular design is realized, namely, the same set of positioning assembly 3 can realize the positioning of the arc parts of the same type and different sizes only by replacing the arc positioning piece 32, the research and development design period of the clamp is further reduced, the research and development cost is reduced, and the processing efficiency of the arc part is improved; the positioning base 1 is fixed on a machine tool for machining, then the positioning assembly 3 for fixing and positioning the arc-shaped part is fixed and positioned on the positioning base 1 through the reference sheet 2, the arc-shaped part is fixed and positioned outside the machine tool, the arc-shaped part is convenient to replace quickly, and machining cost is reduced. The arc part of this scheme is with location clamping anchor clamps passes through arc setting element 32 and locating part 33 and realizes the accurate location of arc part, promotes processingquality, and the mode that rethread elasticity compressed tightly simplifies the clamping operation, improves machining efficiency, and through the modularized design between positioning seat 31 and the arc setting element 32 at last, the design research and development cost of reduction arc part anchor clamps improves machining efficiency simultaneously.
As shown in fig. 2 to fig. 3, in the present embodiment, the arc positioning member 32 includes an arc outer side wall and an arc positioning slot 321 formed by inward recessing along the circumferential direction of the arc outer side wall and used for positioning the arc part by fitting with the arc surface of the arc part. Specifically, the arc positioning element 32 is attached to the arc surface of the arc part (for example, the inner arc of the outer ring of the turbine) through the arc outer side wall and the arc positioning groove 321, and the groove bottom and the groove wall of the arc positioning groove 321 both form a movement obstacle for the arc part, so that the process reference and the fixture positioning reference are basically consistent, the error of the reference misalignment degree is ensured to be zero, the positioning precision is improved to the maximum degree, and the processing quality is improved.
As shown in fig. 2-4, in this embodiment, an elastic gap 322 communicating with the arc positioning slot 321 is vertically disposed on the arc positioning element 32, a pressing threaded hole is disposed on one side of the arc positioning element 32 close to the positioning seat 31, the pressing threaded hole communicates with the elastic gap 322, a connecting hole disposed corresponding to the pressing threaded hole is disposed on one side of the arc positioning element 32 away from the positioning seat 31, the connecting hole communicates with the elastic gap 322, and the pressing element 34 includes a pressing screw penetrating through the connecting hole and threadedly connected with the pressing threaded hole for fixing the arc part by pressing the elastic gap 322. Specifically, the compression screw passes through the connecting hole and compresses tightly screw hole threaded connection, rotates the compression screw again to drive the both ends of elastic gap 322 on the arc setting element 32 and be close to each other, and then make elastic gap 322 diminish, so that two cell walls of arc constant head tank 321 support and press the arc part, accomplish the fixed of arc part, have the mode that current clamp plate compressed tightly relatively, easy operation, machining efficiency is high. Optionally, the aperture of the connecting hole is larger than that of the compression screw hole, so that the compression screw can be inserted conveniently.
As shown in fig. 3, in the present embodiment, the arc positioning member 32 is vertically provided with an elastic hole 323 communicating with the elastic gap 322, and the diameter of the elastic hole 323 is greater than the gap width of the elastic gap 322 and is used for increasing the elastic deformation amplitude of the arc positioning member 32. Specifically, through the elastic hole 323 arranged in the elastic gap 322 and communicated with each other, and because the diameter of the elastic hole 323 is greater than the gap width of the elastic gap 322, the deformable range of the elastic gap 322 is enlarged, and further the groove width variation range of the arc positioning groove 321 is enlarged, so as to adapt to arc parts with larger size range, and improve the universality and the reliability of the arc positioning element 32.
As shown in fig. 2, in the present embodiment, the positioning seat 31 includes a bottom plate 311 fixed on the reference plate 2, and a side plate 312 vertically disposed on the bottom plate 311 and connected to the arc-shaped positioning member 32. Specifically, on positioning seat 31 was fixed in reference piece 2 through bottom plate 311, mutual dismouting of being convenient for, arc location piece 32 is connected to the vertical curb plate 312 of laying of rethread to improve sufficient assembly space for the fixed arc part of arc location piece 32, the assembly of being convenient for improves machining efficiency.
As shown in fig. 2, in the present embodiment, the positioning assembly 3 further includes a cylindrical pin 35 respectively inserted and matched with the side plate 312 and the arc positioning member 32 for positioning the arc positioning member 32 on the side plate 312, a diamond pin 36 respectively inserted and matched with the side plate 312 and the arc positioning member 32 for positioning the arc positioning member 32 on the side plate 312, a connection screw 37 movably connected with the side plate 312 and penetrating through the arc positioning member 32, and a fixing nut 38 threadedly connected with the connection screw 37 for pressing the arc positioning member 32 to fix the arc positioning member 32 on the side plate 312 by rotation. Specifically, the cylindrical pin 35 and the diamond-shaped pin 36 are firstly arranged on the side plate 312 to be positioned when the arc positioning piece 32 is assembled, the connecting screw 37 is connected with the side plate 312, the connecting screw 37 penetrates through the arc positioning piece 32, and then the connecting screw 37 is in threaded connection with the fixing nut 38 to fix the arc positioning piece 32 on the side plate 312. It will be appreciated that the different arcuate parts are of different thicknesses and are matched by corresponding arcuate parts of different thicknesses, with arcuate parts of different thicknesses being matched by connecting screws 37 of different lengths to achieve a modular design for ease of manufacture and assembly.
As shown in fig. 4, in the present embodiment, the positioning assembly 3 further includes a positioning pin inserted into the bottom plate 311 and the side plate 312 respectively for positioning the side plate 312 on the bottom plate 311, and a fixing screw inserted through the bottom plate 311 and screwed with the side plate 312 for fixing the side plate 312 on the bottom plate 311. Specifically, the positioning pin is first disposed on the bottom plate 311, and the side plates 312 are positioned during assembly to ensure mutual perpendicularity, and then the side plates 312 are fixed on the bottom plate 311 by the fixing screws, so that reliability after assembly is ensured.
As shown in fig. 2 and 4, in the present embodiment, the limiting member 33 is disposed at the top of the arc-shaped positioning member 32, a limiting groove 331 for accommodating the arc-shaped part and positioning the arc-shaped part by abutting against the arc-shaped part is concavely disposed at one end of the limiting member 33 close to the arc-shaped outer side wall, and a groove bottom of the limiting groove 331 is disposed in parallel with the positioning seat 31 and is used for abutting against the arc-shaped part. Specifically, the limiting member 33 abuts against the arc-shaped part through the limiting groove 331 to limit the movement of the arc-shaped part and complete the positioning of the arc-shaped part, and meanwhile, since the groove bottom of the limiting groove 331 is arranged in parallel with the positioning seat 31, correspondingly, the positioning surface of the arc-shaped part abutting against the limiting groove 331 is arranged in parallel with the positioning seat 31 to protect the positioning accuracy of the arc-shaped part and improve the processing quality,
as shown in fig. 2 and 4, in this embodiment, a waist-shaped groove 332 is vertically formed on the limiting member 33, an adjusting hole disposed corresponding to the waist-shaped groove 332 is vertically and concavely formed on the top of the arc-shaped positioning member 32, and the positioning assembly 3 further includes an adjusting screw 39 penetrating through the waist-shaped groove 332 and in threaded connection with the adjusting hole. Specifically, the position of the limiting groove 331 on the limiting member 33 is adjusted through the kidney-shaped groove 332 and the adjusting screw 39 so as to be abutted against different arc-shaped parts, and the universality of the positioning assembly 3 is improved.
As shown in fig. 5, the positioning and clamping fixture further includes a reference plate 4 and a plurality of positioning bases 1 installed on the reference plate 4, and the positioning bases 1, the reference sheets 2, and the positioning assemblies 3 are arranged in a one-to-one correspondence manner. Specifically, set up a plurality of location bases 1 through benchmark board 4, after the arc part clamping was located locating component 3, locating component 3 was fixed in on the location base 1 through benchmark piece 2, and then once only accomplished a plurality of arc parts machining, improved machining efficiency.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A positioning and clamping fixture for arc-shaped parts is characterized by comprising a positioning base (1), a reference sheet (2) movably arranged on the positioning base (1) and a positioning assembly (3) connected with the reference sheet (2);
locating component (3) including install positioning seat (31) on benchmark piece (2), can dismantle arc setting element (32) that be used for through the arc surface laminating with the arc part in order to realize the location of arc part of being connected with positioning seat (31), be used for through the spacing locating part (33) that supports the one end terminal surface of pushing up the arc part in order to realize the arc part with being connected with arc setting element (32) and be used for through compressing tightly arc setting element (32) with the realization to the fixed piece (34) that compresses tightly of the clamp of arc part with compressing tightly arc setting element (32) with being connected with arc setting element (32).
2. The positioning and clamping fixture for the arc-shaped part as claimed in claim 1, wherein the arc-shaped positioning piece (32) comprises an arc-shaped outer side wall and an arc-shaped positioning groove (321) which is formed by inwards recessing along the circumferential direction of the arc-shaped outer side wall and is used for positioning the arc-shaped part by being attached to the arc surface of the arc-shaped part.
3. The positioning and clamping fixture for the arc-shaped part according to claim 2, wherein the arc-shaped positioning member (32) is vertically provided with an elastic gap (322) communicated with the arc-shaped positioning groove (321), one side of the arc-shaped positioning member (32) close to the positioning seat (31) is provided with a pressing threaded hole communicated with the elastic gap (322), one side of the arc-shaped positioning member (32) far away from the positioning seat (31) is provided with a connecting hole correspondingly arranged with the pressing threaded hole, the connecting hole is communicated with the elastic gap (322), and the pressing member (34) comprises a pressing screw which is arranged in the connecting hole in a penetrating manner and is in threaded connection with the pressing threaded hole and used for fixing the arc-shaped part through the pressing elastic gap (322).
4. The positioning and clamping fixture for the arc-shaped parts as claimed in claim 3, wherein the arc-shaped positioning piece (32) is vertically provided with an elastic hole (323) communicated with the elastic gap (322), and the diameter of the elastic hole (323) is larger than the gap width of the elastic gap (322) and is used for increasing the elastic deformation amplitude of the arc-shaped positioning piece (32).
5. The arc-shaped part positioning and clamping fixture as claimed in any one of claims 1 to 4, wherein the positioning seat (31) comprises a bottom plate (311) fixed on the reference plate (2) and a side plate (312) vertically arranged on the bottom plate (311) and connected with the arc-shaped positioning piece (32).
6. The arc-shaped part positioning and clamping fixture as claimed in claim 5, wherein the positioning assembly (3) further comprises a cylindrical pin (35) which is respectively in plug-in fit with the side plate (312) and the arc-shaped positioning piece (32) and is used for positioning the arc-shaped positioning piece (32) on the side plate (312), a diamond-shaped pin (36) which is respectively in plug-in fit with the side plate (312) and the arc-shaped positioning piece (32) and is used for positioning the arc-shaped positioning piece (32) on the side plate (312), a connecting screw rod (37) which is movably connected with the side plate (312) and penetrates through the arc-shaped positioning piece (32), and a fixing nut (38) which is in threaded connection with the connecting screw rod (37) and is used for fixing the arc-shaped positioning piece (32) on the side plate (312) by pressing the arc-shaped positioning piece (32) through rotation.
7. The arc-shaped part positioning and clamping fixture as claimed in claim 5, wherein the positioning assembly (3) further comprises a positioning pin which is respectively in plug-in fit with the bottom plate (311) and the side plate (312) and is used for positioning the side plate (312) on the bottom plate (311), and a fixing screw which is arranged in the bottom plate (311) in a penetrating manner and is in threaded connection with the side plate (312) and is used for fixing the side plate (312) on the bottom plate (311).
8. The positioning and clamping fixture for the arc-shaped part according to any one of claims 1-4, characterized in that the limiting member (33) is disposed on the top of the arc-shaped positioning member (32), a limiting groove (331) for accommodating the arc-shaped part and positioning the arc-shaped part by abutting against the arc-shaped part is concavely disposed on one end of the limiting member (33) close to the outer arc-shaped side wall, and the groove bottom of the limiting groove (331) is disposed in parallel with the positioning seat (31) and is used for abutting against the arc-shaped part.
9. The positioning and clamping fixture for the arc-shaped part according to claim 8, wherein a kidney-shaped groove (332) is vertically formed in the position limiting member (33), an adjusting hole arranged corresponding to the kidney-shaped groove (332) is vertically and concavely formed in the top of the arc-shaped positioning member (32), and the positioning assembly (3) further comprises an adjusting screw (39) which is arranged in the kidney-shaped groove (332) in a penetrating manner and is in threaded connection with the adjusting hole.
10. The arc-shaped part positioning and clamping fixture as claimed in any one of claims 1 to 4, wherein the positioning and clamping fixture further comprises a reference plate (4) and a plurality of positioning bases (1) mounted on the reference plate (4), and the positioning bases (1), the reference sheets (2) and the positioning assemblies (3) are arranged in a one-to-one correspondence manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488327.4A CN114226896B (en) | 2021-12-08 | 2021-12-08 | Positioning and clamping fixture for arc-shaped parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111488327.4A CN114226896B (en) | 2021-12-08 | 2021-12-08 | Positioning and clamping fixture for arc-shaped parts |
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| Publication Number | Publication Date |
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| CN114226896A true CN114226896A (en) | 2022-03-25 |
| CN114226896B CN114226896B (en) | 2023-04-11 |
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| CN202111488327.4A Active CN114226896B (en) | 2021-12-08 | 2021-12-08 | Positioning and clamping fixture for arc-shaped parts |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055986A (en) * | 2022-06-28 | 2022-09-16 | 湖南南方通用航空发动机有限公司 | Fan-shaped workpiece positioning fixture |
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| CN203509648U (en) * | 2013-08-26 | 2014-04-02 | 黄山皖南机床有限公司 | Process device for milling notch and rack of cylindrical workpiece |
| JP2019093475A (en) * | 2017-11-22 | 2019-06-20 | 大同マシナリー株式会社 | Clamp device |
| CN212794620U (en) * | 2020-05-22 | 2021-03-26 | 中山兆鸿精密模具注塑有限公司 | Clamp device for strip-shaped plate with radian |
| CN214162178U (en) * | 2021-01-12 | 2021-09-10 | 郑州智匠精密工具有限公司 | Integrated rapid clamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055986A (en) * | 2022-06-28 | 2022-09-16 | 湖南南方通用航空发动机有限公司 | Fan-shaped workpiece positioning fixture |
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| CN114226896B (en) | 2023-04-11 |
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