CN111673495B - Guide blade assembly turning machining clamp and turning machining method - Google Patents
Guide blade assembly turning machining clamp and turning machining method Download PDFInfo
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- CN111673495B CN111673495B CN202010359905.3A CN202010359905A CN111673495B CN 111673495 B CN111673495 B CN 111673495B CN 202010359905 A CN202010359905 A CN 202010359905A CN 111673495 B CN111673495 B CN 111673495B
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- disc
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- 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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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/28—Supporting or mounting arrangements, e.g. for turbine casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/041—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector using blades
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- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a guide blade component jigger processing clamp and a jigger processing method, the guide blade component jigger processing clamp comprises a disc, a movable positioning mechanism, a pressing mechanism and a positioning processing mechanism, the movable positioning mechanism is provided with a datum plane which is used for being attached to a positioning surface of a guide blade component, so that the guide blade assembly is positioned and arranged on the disc, a plurality of positioning and mounting structures for mounting the movable positioning mechanism and a plurality of pressing and mounting structures for mounting the pressing mechanism are uniformly distributed on the disc along the circumferential direction, the positioning and mounting structures and the pressing and mounting structures are matched, the movable positioning mechanisms are sequentially arranged on different positioning and mounting structures according to the gaps when the plurality of groups of guide blade assemblies are assembled, and then the multiple groups of guide blade assemblies are positioned and installed on the disc, and the multiple groups of guide blade assemblies are compressed and fixed on the disc by respectively installing the multiple compressing mechanisms on the corresponding compressing and installing structures.
Description
Technical Field
The invention relates to the technical field of guide blade assembly jigger processing, in particular to a guide blade assembly jigger processing clamp and a jigger processing method.
Background
Guide vane assemblies are an important component of aircraft engine gas turbines. The guide blade assembly is formed by welding and combining a guide blade (left) and a guide blade (right) or directly casting. At present to guide vane subassembly's top flange and the excircle of lower flange and the processing of hole and terminal surface, make up into the guide vane dish with the multiunit guide vane subassembly clamping through guide vane subassembly barring processing anchor clamps, thereby carry out barring processing to multiunit guide vane subassembly, current guide vane subassembly barring processing anchor clamps, at first design one with the similar fixed locating piece of part, this fixed locating piece is fixed in on the disc, then laminate the guide vane subassembly on the locating piece one according to the order, form a whole ring back pouring low melting point alloy, constitute the guide vane dish after the cooling of pouring, and then install the disc and carry out lathe work to the whole dish guide vane dish on the processing machine tool, simple structure, but have following several shortcomings: 1) because each group of guide blade assemblies has machining errors, and gaps exist between two adjacent groups of guide blade assemblies in the working state of the engine, the guide blade assemblies cannot be completely attached without gaps, the gaps between the guide blades are accumulated between the last group of guide blade assemblies and the fixed positioning blocks by adopting the conventional fixture, the rest guide blade assemblies are attached without gaps, and the guide blade assemblies of the engine are integrally assembled, so that the consistency of the guide blade assemblies of the engine in the whole disc cannot be ensured; 2) when the single-group blade assemblies are uniformly compressed by the pressing plates on the upper edge plate and the lower edge plate, due to the fact that gaps of the blades of each disc are not consistent, a part of the pressing plates are not pressed on the guide blade assemblies, and the guide blade assemblies are easy to move to cause machining errors; 3) the designed fixed positioning block rotates together with other parts in the turning process, after the fixed positioning block is used for a period of time, the positioning surface of the fixed positioning block is abraded, so that the positioning is inaccurate, once the fixed positioning block is abraded, a correcting mechanism is required to be added to correct the positioning surface, and the operation of an operator is very complicated.
Disclosure of Invention
The invention provides a guide blade assembly turning clamp and a turning method, and aims to solve the technical problems that the existing guide blade assembly turning clamp is inaccurate in positioning when clamping a plurality of groups of guide blade assemblies for turning and cannot ensure the processing consistency of the plurality of groups of guide blade assemblies.
According to one aspect of the present invention, there is provided a guide blade assembly turning jig for clamping and assembling a plurality of sets of guide blade assemblies into a disc-shaped structure, thereby bonding the plurality of sets of guide blade assemblies into a guide blade disc by a low melting point alloy to perform turning machining on the plurality of sets of guide blade assemblies, one side surface of each guide blade assembly being a positioning surface, the guide blade assembly turning jig comprising a disc for mounting the plurality of sets of guide blade assemblies, a movable positioning mechanism for mounting on the disc to position the guide blade assemblies, a pressing mechanism for mounting on the disc to press and fix the guide blade assemblies onto the disc, and a positioning machining mechanism provided on the disc to position and mount the disc on a machining lathe, the movable positioning mechanism being provided with a reference surface for fitting with the positioning surfaces of the guide blade assemblies, in order to install guide vane subassembly location on the disc, the disc has evenly laid a plurality of location mounting structure that are used for installing activity positioning mechanism and a plurality of compressing tightly mounting structure that are used for installing hold-down mechanism along circumference, and location mounting structure and compressing tightly mounting structure match the setting, location mounting structure and compressing tightly mounting structure all are the same with the quantity of the guide vane subassembly that the guide vane dish contains, with clearance when assembling according to the multiunit guide vane subassembly with the activity positioning mechanism install in proper order on the location mounting structure of difference, and then with multiunit guide vane subassembly location installation on the disc, and through installing a plurality of hold-down mechanism respectively in order to compress tightly the multiunit guide vane subassembly on the corresponding compressing tightly mounting structure and be fixed in on the disc.
Furthermore, the positioning and mounting structure comprises an indexing hole arranged on the disc, the movable positioning mechanism comprises a movable positioning block provided with a reference surface and a movable bolt inserted in the movable positioning block, and the movable bolt is inserted in the indexing hole to mount the movable positioning block on the disc.
Furthermore, an annular convex strip is arranged on the disc along the circumferential direction, a groove matched with the annular convex plate is arranged on the movable positioning block, and the indexing holes are arranged on the annular convex strip along the radial direction of the disc.
Further, the datum plane is made of alloy steel and welded with hard alloy so as to increase the wear resistance of the datum plane.
Further, hold-down mechanism is including being used for pressing the top board on the disc with guide vane subassembly's last border plate, be connected with the top board and wear to locate the last installation pole on the disc, be used for compressing tightly the holding down plate on the disc with guide vane subassembly's lower border plate and be connected with the holding down plate and wear to locate the lower installation pole on the disc, compresses tightly the mounting structure including offering on the disc be used for wearing to establish the last mounting hole of installation pole and be used for wearing to establish the lower mounting hole of installation pole down.
Furthermore, the pressing mechanism further comprises a limiting block which is used for abutting against the outer edge plate of the guide blade assembly along the radial direction of the disc, and the guide blade assembly is limited and fixed in the radial direction through the limiting block so as to prevent the guide blade assembly from moving along the radial direction of the disc.
Furthermore, the disc is provided with a limiting groove for supporting the rear end of the lower pressing plate, the groove bottom surface of the limiting groove is in a slope shape, the height of the slope-shaped groove bottom surface is gradually increased from one end close to the outer edge of the disc to one end close to the center of the disc, and the rear end of the lower pressing plate is supported on the groove bottom surface of the limiting groove to prevent the lower pressing plate from moving to the center of the disc in the machining process, so that the lower pressing plate is guaranteed to be pressed on the lower edge plate of the guide blade assembly.
Further, the guide blade assembly jigger processing clamp further comprises ejection mechanisms which are arranged on the disc and used for ejecting the processed guide blade disc outwards, and the ejection mechanisms are uniformly distributed on the disc along the circumferential direction so as to separate the processed guide blade disc from the disc and turn to the next process for processing the guide blade disc.
Further, ejection mechanism is equipped with the mounting groove and the mounting hole that communicates and run through the disc with the mounting groove including installing in the kicking block of guide blade dish below and the ejector pin of being connected with the kicking block on the disc, and the ejector pin is connected with mounting hole screw-thread fit, and the kicking block is installed in the mounting groove, and ejecting to the guide blade dish in the kicking block follow mounting groove through adjusting the ejector pin, and then makes guide blade dish and disc separation.
According to another aspect of the present invention, there is also provided a guide blade turning method, in which the guide blade turning jig is used to clamp and combine multiple sets of guide blade assemblies into a disc-shaped structure, the method including the following steps: the movable positioning mechanism is arranged on one positioning and mounting structure, the positioning surface of the first group of guide blade assemblies is matched and attached with the datum surface on the movable positioning mechanism, so that the first group of guide blade assemblies are positioned and mounted on the disc, and the pressing mechanism is mounted on the corresponding pressing and mounting structure to press and fix the first guide blade assemblies on the disc; removing the movable positioning mechanism from the disc; according to the gaps of the multiple groups of guide blade assemblies during assembly, the movable positioning mechanism is arranged on the disc through the other mounting structure, the multiple groups of guide blade assemblies are sequentially positioned and arranged on the disc in the above mode, and the multiple groups of guide blade assemblies are respectively pressed and fixed on the disc through the multiple pressing mechanisms, so that the multiple groups of guide blade assemblies are clamped and combined into a disc-shaped structure; pouring low-melting-point alloy in a gap between the guide blade assembly and the disc until the low-melting-point alloy is cooled and solidified, and bonding a plurality of groups of guide blade assemblies into a guide blade disc through the low-melting-point alloy and fixing the guide blade disc on the disc; positioning and mounting the disc on a processing lathe through a positioning and processing mechanism, turning one surface of the guide blade disc, separating the guide blade disc from the disc, and turning the other surface of the guide blade disc in the same positioning and mounting mode, and separating the guide blade disc from the disc; and melting the low-melting-point alloy among the guide blade assemblies on the guide blade disc after the turning is finished, so as to obtain a plurality of groups of finished guide blade assemblies.
The invention has the following beneficial effects:
the guide blade assembly turning clamp is provided with the movable positioning block, the movable positioning block is provided with a datum plane which is attached to the positioning surface of the guide blade assembly, the movable positioning mechanisms are sequentially arranged on different positioning and mounting structures according to gaps when the plurality of groups of guide blade assemblies are assembled, so that the plurality of groups of guide blade assemblies are positioned and mounted on the disc, the plurality of pressing mechanisms are respectively arranged on the corresponding pressing and mounting structures, so that the plurality of groups of guide blade assemblies are pressed and fixed on the disc to form a disc-shaped structure, the plurality of groups of guide blade assemblies are bonded into the guide blade disc through low-melting-point alloy and are fixed on the disc, the disc is positioned and mounted on a machining lathe through the positioning and processing mechanism to turn one surface of the guide blade disc, the guide blade disc is separated from the disc after machining is finished, and the other surface of the guide blade disc is turned by using another turning clamp in the same positioning and mounting mode Turning, and finally melting the low-melting-point alloy on the processed guide blade disc to obtain a plurality of groups of processed guide blade assemblies, wherein each group of guide blade assemblies are positioned and installed on the disc through reference surfaces on movable positioning blocks, the plurality of groups of guide blade assemblies are clamped and combined into the guide blade disc, and gaps between the guide blade assemblies are equal to gaps when the plurality of groups of guide blade assemblies are integrally assembled, so that the processing consistency of the plurality of groups of guide blade discs is improved; in addition, because location mounting structure and the matching of compressing tightly mounting structure set up, ensure that location installation is on the disc every group guide vane subassembly homoenergetic is fixed in on the disc through hold-down mechanism to avoid guide vane subassembly to remove and cause machining error in the course of working.
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 guide vane assembly turning jig according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a turning jig for a guide blade assembly according to a preferred embodiment of the present invention.
Illustration of the drawings:
100. a guide blade assembly; 1. a disc; 2. a movable positioning mechanism; 21. a movable positioning block; 22. a reference plane; 23. a movable bolt; 3. a hold-down mechanism; 31. an upper pressure plate; 32. a lower pressing plate; 33. a limiting block; 4. positioning the machining mechanism; 5. indexing holes; 6. an ejection mechanism; 7. a limiting groove.
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 guide vane assembly turning jig according to a preferred embodiment of the present invention; fig. 2 is a schematic structural view of a turning jig for a guide blade assembly according to a preferred embodiment of the present invention.
As shown in fig. 1 and fig. 2, the guide blade turning jig of the present embodiment is used for clamping and combining a plurality of sets of guide blade assemblies 100 into a disc-shaped structure, so that the plurality of sets of guide blade assemblies 100 are bonded into a guide blade disc through a low melting point alloy to turn the plurality of sets of guide blade assemblies 100 into a turning process, one side surface of each guide blade assembly 100 is a positioning surface, the guide blade turning jig includes a disc 1 for mounting the plurality of sets of guide blade assemblies 100, a movable positioning mechanism 2 for mounting on the disc 1 to position the guide blade assemblies 100, a pressing mechanism 3 for mounting on the disc 1 to press and fix the guide blade assemblies 100 onto the disc 1, and a positioning and processing mechanism 4 provided on the disc 1 to position and mount the disc 1 onto a processing lathe, the movable positioning mechanism 2 is provided with a reference surface 22 for attaching to the positioning surface of the guide blade assemblies 100, in order to install guide vane subassembly 100 location on disc 1, disc 1 has evenly laid a plurality of location mounting structure that are used for installing activity positioning mechanism 2 and a plurality of compressing tightly mounting structure that are used for installing hold-down mechanism 3 along circumference, and location mounting structure and compressing tightly mounting structure match the setting, location mounting structure all is the same with the quantity of the guide vane subassembly 100 that the guide vane dish contains, with clearance when assembling according to multiunit guide vane subassembly 100 with activity positioning mechanism 2 install in proper order on the location mounting structure of difference, and then with multiunit guide vane subassembly 100 location installation on disc 1, and through installing a plurality of hold-down mechanisms 3 respectively in order to compress tightly the multiunit guide vane subassembly 100 and be fixed in on disc 1 in the compressing tightly mounting structure that corresponds. The guide blade assembly turning clamp comprises a movable positioning block 21, a datum surface 22 for being attached to a positioning surface of a guide blade assembly 100 is arranged on the movable positioning block 21, movable positioning mechanisms 2 are sequentially arranged on different positioning and mounting structures according to gaps when a plurality of groups of guide blade assemblies 100 are assembled, so that the plurality of groups of guide blade assemblies 100 are positioned and mounted on a disc 1, a plurality of pressing mechanisms 3 are respectively arranged on corresponding pressing and mounting structures, so that the plurality of groups of guide blade assemblies 100 are pressed and fixed on the disc 1 to form a disc-shaped structure, the plurality of groups of guide blade assemblies 100 are bonded into a guide blade disc and fixed on the disc 1 through low-melting-point alloy, the disc 1 is positioned and mounted on a machining lathe through a positioning and processing mechanism 4 to turn one surface of the guide blade disc, and the guide blade disc is separated from the disc 1 after the machining is finished, turning the other surface of the guide blade disc by using another turning fixture in the same positioning and mounting mode, and finally melting the low-melting-point alloy on the machined guide blade disc to obtain a plurality of groups of machined guide blade assemblies, so that each group of guide blade assemblies 100 are positioned and mounted on the disc 1 through the reference surface 22 on the movable positioning block 21, the plurality of groups of guide blade assemblies 100 are clamped and combined into the guide blade disc, and the gaps between the guide blade assemblies 100 are equal to the gaps when the plurality of groups of guide blade assemblies 100 are integrally assembled, thereby improving the machining consistency of the plurality of groups of guide blade discs; in addition, because location mounting structure and the matching of compressing tightly the mounting structure set up, ensure that location installation is on disc 1 every group guide vane subassembly 100 homoenergetic is fixed in disc 1 through hold-down mechanism 3 to avoid guide vane subassembly 100 to remove and cause machining error in the course of working. The positioning and processing mechanism 4 comprises a positioning bush arranged at the center of the disc 1 and used for positioning and mounting the disc 1 on a processing lathe so as to ensure that the central axis of the disc 1 coincides with the rotation axis of the processing lathe. The disc 1 is provided with a connecting hole for connecting a flange plate on a machining lathe. The disc 1 is also provided with lifting holes so as to facilitate the lifting of the disc 1.
As shown in fig. 1 and 2, the positioning and mounting structure includes an indexing hole 5 provided on the disc 1, the movable positioning mechanism 2 includes a movable positioning block 21 provided with a reference surface 22 and a movable bolt 23 inserted into the movable positioning block 21, and the movable bolt 23 is inserted into the indexing hole 5 to mount the movable positioning block 21 on the disc 1. The disc 1 is provided with an annular convex strip along the circumferential direction, the movable positioning block 21 is provided with a groove matched with the annular convex plate, and the indexing holes 5 are arranged on the annular convex strip along the radial direction of the disc 1. The movable positioning block 21 is provided with a positioning hole for penetrating the movable bolt 23, and bushings matched with the movable bolt 23 are installed in the positioning hole and the indexing hole 5 so as to prevent the movable bolt 23 from wearing the positioning hole and the indexing hole 5. The overhanging end of the movable bolt 23 is provided with an anti-slip layer to facilitate operation by an operator, optionally the anti-slip layer is an anti-slip pattern and/or an anti-slip sleeve. A fan-shaped step surface is arranged between the outward extending end and the inward extending end of the movable bolt 23. The movable positioning block 21 is provided with a step screw, and the step head of the step screw is pressed on the fan-shaped step surface, so that the movable bolt 23 is pressed and fixed on the movable positioning block 21 and the disc 1. The movable positioning block 21 is provided with fastening screws, and the two fastening screws are symmetrically distributed about the movable bolt 23 and are abutted against the disc 1 through the two fastening screws, so that the movable positioning block 21 is fixed on the disc 1. The datum surface 22 is formed of alloy steel with cemented carbide to increase the wear resistance of the datum surface 22. In this embodiment, two cemented carbide plates are brazed to the movable positioning block to form the reference surface 22.
As shown in fig. 1 and 2, the pressing mechanism 3 includes an upper pressing plate 31 for pressing the upper edge plate of the guide vane assembly 100 onto the disc 1, an upper mounting rod connected to the upper pressing plate 31 and penetrating the disc 1, a lower pressing plate 32 for pressing the lower edge plate of the guide vane assembly 100 onto the disc 1, and a lower mounting rod connected to the lower pressing plate 32 and penetrating the disc 1, and the pressing mounting structure includes an upper mounting hole formed in the disc 1 for penetrating the upper mounting rod and a lower mounting hole for penetrating the lower mounting rod. In the present embodiment, hook screws are inserted through the disc 1, the upper edge plate of the guide vane assembly 100 is pressed downward by the heads of the hook screws, and the configuration screws are fixed to the disc 1 by fastening nuts and the pressing force of the hook screws is adjusted. The heads of the two hook screws press both ends of the upper edge plate of the guide vane assembly 100 downward, respectively. The lower mounting rod is a lower mounting screw in threaded matching connection with the lower mounting hole, and a stepped hole for mounting the lower mounting screw is formed in the lower pressing plate 32.
As shown in fig. 1 and 2, the pressing mechanism 3 further includes a stopper 33 for abutting against the outer edge plate of the guide vane assembly 100 in the radial direction of the disc 1, and the guide vane assembly 100 is radially fixed by the stopper 33 so as to prevent the guide vane assembly 100 from moving in the radial direction of the disc 1. The limiting groove 7 used for supporting the rear end of the lower pressing plate 32 is arranged on the disc 1, the bottom surface of the limiting groove 7 is in a slope shape, the height of the slope-shaped bottom surface of the groove gradually increases from one end close to the outer edge of the disc 1 to one end close to the center of the disc 1, the rear end of the lower pressing plate 32 is supported on the bottom surface of the limiting groove 7, the lower pressing plate 32 is prevented from moving to the center of the disc 1 in the machining process, and therefore the lower pressing plate 32 is enabled to be pressed on the lower edge plate of the guide vane assembly 100. The limiting block 33 is fixed on the disc 1 through two cylindrical pins. The step holes on the lower pressure plate 32 are kidney-shaped step holes distributed along the radial direction of the disc 1, so that the position of the lower pressure plate 32 can be adjusted according to the size of the guide vane assembly 100, and the front end of the lower pressure plate 32 is ensured to press the lower edge plate of the guide vane assembly 100 downwards.
As shown in fig. 1 and 2, the guide blade assembly turning jig further includes an ejection mechanism 6 mounted on the disc 1 for ejecting the machined guide blade disc to the outside of the disc 1, and the ejection mechanisms 6 are uniformly arranged on the disc 1 in the circumferential direction to separate the machined guide blade disc from the disc 1. The ejection mechanism 6 is including installing in the kicking block of guide vane dish below and the ejector pin of being connected with the kicking block, be equipped with the mounting groove on the disc 1 and communicate and run through the mounting hole of disc 1 with the mounting groove, the ejector pin is connected with mounting hole screw-thread fit, the kicking block is installed in the mounting groove, ejecting to the guide vane dish in the mounting groove with the kicking block follow through adjusting the ejector pin, and then make guide vane dish and disc 1 separation. Optionally, the ejection mechanism 6 is located below the middle of the guide vane assembly 100 to facilitate better ejection of the guide vane disk out of the disc 1. In this embodiment, the ejector rod is a bolt in threaded matching with the mounting hole, and the ejector block is ejected by rotating the bolt upwards, so that the guide vane disc is ejected from the disc 1.
As shown in fig. 1 and fig. 2, the guide blade turning method of the present embodiment adopts the above-mentioned guide blade turning jig to clamp and combine multiple sets of guide blade assemblies 100 into a disc-shaped structure, and includes the following steps: the movable positioning mechanism 2 is arranged on one positioning and mounting structure, the positioning surface of the first group of guide blade assemblies 100 is matched and attached with the datum surface 22 on the movable positioning mechanism 2, so that the first group of guide blade assemblies are positioned and mounted on the disc 1, and the pressing mechanism 3 is arranged on the corresponding pressing and mounting structure, so that the first guide blade assemblies 100 are pressed and fixed on the disc 1; the movable positioning mechanism 2 is detached from the disc 1; according to the gaps of the multiple groups of guide blade assemblies 100 during assembly, the movable positioning mechanism 2 is arranged on the disc 1 through another mounting structure, the multiple groups of guide blade assemblies 100 are sequentially positioned and arranged on the disc 1 in the above mode, and the multiple groups of guide blade assemblies 100 are respectively pressed and fixed on the disc 1 through the multiple pressing mechanisms 3, so that the multiple groups of guide blade assemblies are clamped and combined into a disc-shaped structure; pouring low-melting-point alloy into gaps between the multiple groups of guide vane assemblies 100 and the disc 1 until the low-melting-point alloy is cooled and solidified, and bonding the multiple groups of guide vane assemblies 100 into guide vane discs through the low-melting-point alloy and fixing the guide vane discs on the disc 1; the disc 1 is positioned and installed on a processing lathe through a positioning processing mechanism 4, and the guide blade disc is separated from the disc 1 after one surface of the guide blade disc is lathed; turning the other surface of the guide blade disc in the same positioning and mounting mode, and separating the guide blade disc from the disc 1; and melting the low-melting-point alloy among the guide blade assemblies 100 on the guide blade disc after the turning is finished, so as to obtain a plurality of groups of guide blade assemblies 100 which are finished. The plurality of sets of guide vane assemblies 100 are fixed on the disc 1 through the solidified low-melting-point alloy, and simultaneously, a supporting force can be provided for turning the guide vane disc to prevent the guide vane assemblies 100 from being deformed under pressure. In this embodiment, the guide vane plate is pushed out of the disc 1 by the push-out mechanism 6, and the guide vane plate is separated from the disc.
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 (9)
1. A guide vane assembly jigger processing clamp is used for clamping and combining a plurality of groups of guide vane assemblies (100) into a disc-shaped structure, so that the plurality of groups of guide vane assemblies (100) are bonded into a guide vane disc through low-melting-point alloy to carry out jigger processing on the plurality of groups of guide vane assemblies (100), one side surface of each guide vane assembly (100) is a positioning surface,
it is characterized in that the preparation method is characterized in that,
the guide blade assembly turning clamp comprises a disc (1) for mounting a plurality of groups of guide blade assemblies (100), a movable positioning mechanism (2) for mounting on the disc (1) to position the guide blade assemblies (100), a pressing mechanism (3) for mounting on the disc (1) to press and fix the guide blade assemblies (100) on the disc (1), and a positioning processing mechanism (4) arranged on the disc (1) and used for positioning and mounting the disc (1) on a processing lathe,
the movable positioning mechanism (2) is provided with a datum plane (22) which is used for being attached to the positioning surface of the guide blade assembly (100) so as to position and install the guide blade assembly (100) on the disc (1),
the disc (1) is uniformly provided with a plurality of positioning and mounting structures for mounting the movable positioning mechanisms (2) and a plurality of pressing and mounting structures for mounting the pressing mechanisms (3) along the circumferential direction, the positioning and mounting structures are matched with the pressing and mounting structures, the positioning and mounting structures and the pressing and mounting structures are the same as the number of the guide blade assemblies (100) contained in the guide blade disc, the movable positioning mechanisms (2) are sequentially mounted on different positioning and mounting structures according to gaps in the assembly of the plurality of groups of guide blade assemblies (100), the plurality of groups of guide blade assemblies (100) are positioned and mounted on the disc (1), and the plurality of groups of guide blade assemblies (100) are pressed and fixed on the disc (1) by respectively mounting the plurality of pressing and mounting structures (3) on the corresponding pressing and mounting structures;
the positioning and mounting structure comprises an indexing hole (5) arranged on the disc (1),
the movable positioning mechanism (2) comprises a movable positioning block (21) provided with a reference surface (22) and a movable bolt (23) inserted in the movable positioning block (21), and the movable bolt (23) is inserted in the indexing hole (5) to install the movable positioning block (21) on the disc (1).
2. The guide blade assembly turning jig of claim 1,
the disc (1) is provided with an annular convex strip along the circumferential direction, the movable positioning block (21) is provided with a groove matched with the annular convex strip, and the indexing holes (5) are arranged on the annular convex strip along the radial direction of the disc (1).
3. The guide blade assembly turning jig of claim 1,
the datum plane (22) is made of alloy steel welded with hard alloy to increase the wear resistance of the datum plane (22).
4. The guide blade assembly turning jig of claim 1,
the pressing mechanism (3) comprises an upper pressing plate (31) used for pressing the upper edge plate of the guide blade assembly (100) on the disc (1), an upper mounting rod connected with the upper pressing plate (31) and arranged on the disc (1) in a penetrating way, a lower pressing plate (32) used for pressing the lower edge plate of the guide blade assembly (100) on the disc (1) and a lower mounting rod connected with the lower pressing plate (32) and arranged on the disc (1) in a penetrating way,
the pressing mounting structure comprises an upper mounting hole which is arranged on the disc (1) and used for penetrating the upper mounting rod and a lower mounting hole which is arranged on the lower mounting rod.
5. The guide blade assembly turning jig of claim 4,
the pressing mechanism (3) further comprises a limiting block (33) which is used for abutting against the outer edge plate of the guide blade assembly (100) along the radial direction of the disc (1), and the guide blade assembly (100) is limited and fixed in the radial direction through the limiting block (33) so as to prevent the guide blade assembly (100) from moving along the radial direction of the disc (1).
6. The guide blade assembly turning jig of claim 5,
the limiting groove (7) used for supporting the rear end of the lower pressing plate (32) is arranged on the disc (1), the groove bottom surface of the limiting groove (7) is in a slope shape, the height of the slope-shaped groove bottom surface from one end close to the outer edge of the disc (1) to one end close to the center of the disc (1) is gradually increased, the rear end of the lower pressing plate (32) is supported on the groove bottom surface of the limiting groove (7), the lower pressing plate (32) is prevented from moving to the center of the disc (1) in the machining process, and therefore the lower pressing plate (32) is guaranteed to be pressed on the lower edge plate of the guide vane assembly (100).
7. The guide blade assembly turning jig of claim 1,
the turning machining clamp for the guide blade assembly further comprises ejection mechanisms (6) which are arranged on the disc (1) and used for ejecting the machined guide blade disc to the outside of the disc (1), and the ejection mechanisms (6) are uniformly distributed on the disc (1) along the circumferential direction so as to separate the machined guide blade disc from the disc (1) and turn to the next process for machining the guide blade disc.
8. The guide blade assembly turning jig of claim 1,
the ejection mechanism (6) comprises an ejection block arranged below the guide vane disc (100) and an ejector rod connected with the ejection block, the disc (1) is provided with a mounting groove and a mounting hole communicated with the mounting groove and penetrating through the disc (1),
the ejector rod is connected with the mounting hole in a threaded fit mode, the ejector block is installed in the mounting groove, the ejector block is ejected out of the mounting groove to the guide blade disc through adjusting the ejector rod, and then the guide blade disc is separated from the disc (1).
9. A guide blade turning method, characterized in that a plurality of groups of guide blade assemblies (100) are clamped and combined into a disc-shaped structure by using the guide blade assembly turning clamp of claims 1-8, comprising the following steps:
the movable positioning mechanism (2) is arranged on one positioning and mounting structure, the positioning surface of the first group of guide blade assemblies (100) is matched and attached with the datum surface (22) on the movable positioning mechanism (2), so that the first group of guide blade assemblies (100) are positioned and mounted on the disc (1), and the pressing mechanism (3) is mounted on the corresponding pressing and mounting structure, so that the first guide blade assemblies (100) are pressed and fixed on the disc (1);
the movable positioning mechanism (2) is detached from the disc (1);
according to the gaps of the multiple groups of guide blade assemblies (100) during assembly, the movable positioning mechanism (2) is arranged on the disc (1) through another mounting structure, the multiple groups of guide blade assemblies (100) are sequentially positioned and arranged on the disc (1) in the above mode, and the multiple groups of guide blade assemblies (100) are respectively pressed and fixed on the disc (1) through the multiple pressing mechanisms (3), so that the multiple groups of guide blade assemblies (100) are clamped and combined into a disc-shaped structure;
pouring low-melting-point alloy in a gap between the guide blade assembly (100) and the disc (1) until the low-melting-point alloy is cooled and solidified, and bonding a plurality of groups of guide blade assemblies (100) into a guide blade disc through the low-melting-point alloy and fixing the guide blade disc on the disc (1);
the disc (1) is positioned and installed on a processing lathe through a positioning and machining mechanism (4), the guide blade disc is separated from the disc (1) after one surface of the guide blade disc is lathed, and the guide blade disc is separated from the disc (1) after the other surface of the guide blade disc is lathed in the same positioning and installation mode;
and melting the low-melting-point alloy among the guide blade assemblies (100) on the guide blade disc after the turning is finished, so as to obtain a plurality of groups of processed guide blade assemblies (100).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010359905.3A CN111673495B (en) | 2020-04-30 | 2020-04-30 | Guide blade assembly turning machining clamp and turning machining method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010359905.3A CN111673495B (en) | 2020-04-30 | 2020-04-30 | Guide blade assembly turning machining clamp and turning machining method |
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| CN111673495A CN111673495A (en) | 2020-09-18 |
| CN111673495B true CN111673495B (en) | 2021-08-06 |
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| CN101074609A (en) * | 2006-05-18 | 2007-11-21 | 曼柴油机欧洲股份公司 | Guide for an axial inlet turbine of an exhaust gas turbocharger |
| CN203003673U (en) * | 2012-12-28 | 2013-06-19 | 四川国际航空发动机维修有限公司 | Grinding fixture of exhaust guide vane end face |
| WO2014197044A2 (en) * | 2013-03-12 | 2014-12-11 | United Technologies Corporation | Vane tip machining fixture assembly |
| CN105344975A (en) * | 2015-11-26 | 2016-02-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Datum transformation fixture and datum transformation method for guide blades |
| CN106392505A (en) * | 2016-11-23 | 2017-02-15 | 沈阳黎明航空发动机(集团)有限责任公司 | Assembly method for guide vane assemblies |
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2020
- 2020-04-30 CN CN202010359905.3A patent/CN111673495B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101074609A (en) * | 2006-05-18 | 2007-11-21 | 曼柴油机欧洲股份公司 | Guide for an axial inlet turbine of an exhaust gas turbocharger |
| CN203003673U (en) * | 2012-12-28 | 2013-06-19 | 四川国际航空发动机维修有限公司 | Grinding fixture of exhaust guide vane end face |
| WO2014197044A2 (en) * | 2013-03-12 | 2014-12-11 | United Technologies Corporation | Vane tip machining fixture assembly |
| CN105344975A (en) * | 2015-11-26 | 2016-02-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Datum transformation fixture and datum transformation method for guide blades |
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| CN111673495A (en) | 2020-09-18 |
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