CN208556736U - Process two grade blade recruitment of aero-engine free turbine dress - Google Patents

Process two grade blade recruitment of aero-engine free turbine dress Download PDF

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Publication number
CN208556736U
CN208556736U CN201820910815.7U CN201820910815U CN208556736U CN 208556736 U CN208556736 U CN 208556736U CN 201820910815 U CN201820910815 U CN 201820910815U CN 208556736 U CN208556736 U CN 208556736U
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China
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grade
pedestal
supporting part
collet
top cover
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CN201820910815.7U
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Chinese (zh)
Inventor
彭正明
周健
刘壮
李亮甲
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Changzhou Hangfa China Lanxiang Machinery LLC
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Changzhou Hangfa China Lanxiang Machinery LLC
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Abstract

The utility model relates to a kind of two grade blade recruitment of processing aero-engine free turbine dresses, including pedestal, the arranged on left and right sides of the pedestal is equipped with a vertical left and right supporting part, and the left supporting part is equipped with collet, and the right side of the collet is equipped with V-arrangement flank of tooth slot;The medial surface of the right supporting part is equipped with top cover, and the left side of the top cover offers rectangular channel, the workbench of two grade blade right ends and the rectangular channel secure fit, the tenon secure fit of the V-arrangement flank of tooth slot and two grade blade left ends.The finishing to two grade blades face to be processed can be completed on three axis machining center using the tooling of the utility model, get rid of dependence of the existing processing method to Four-axis milling center or manual processing;The high-efficient and time saving of two grade blades is processed using this tooling, under the premise of guaranteeing second level leaf quality qualification rate, the processing quality in each two grade blades face to be processed is unified.

Description

Process two grade blade recruitment of aero-engine free turbine dress
Technical field
The utility model relates to aviation tool for processing, and in particular to a kind of processing aero-engine free turbine second level leaf Piece tooling.
Background technique
Two grade blade 4 of free turbine is the important spare part in aero-engine, and material is forging state high temperature alloy GH93; Hardness >=290, one engine domestic demand is furnished with 60 multi-disc, two grade blade 4, therefore manufacturer is larger to the throughput requirements of the part;Two The face to be processed of grade blade 4 includes leading edge 5, rear 6, leaf basin 7, blade back 8, and the left end portion of two grade blades is tenon 11, second level The right end portion of blade is workbench 12, and two grade blades 4 before finishing are by electrical discharge machining as roughing, electrical spark working Work has processed the blade profile of two grade blades 4 and there are fraction of machining allowance in each face to be processed, obtains second level leaf through measurement The machining allowance in each section of the blade of piece 4 is inconsistent.
The processing method of existing two grade blade 4 is polished by artificial manual grinding so that face to be processed reaches qualified mark Standard, manual labor's intensity needed for the processing method is higher, and artificial working environment is more severe, is difficult in process fast Speed exhausts the heat that two grade blades 4 generate during polishing grinding, and temperature-fall period reduces production efficiency, the processing method Production efficiency it is low and result in that the yield of two grade blades 4 is few, because the material hardness of two grade blades 4 is higher so that when sanding and polishing Between it is longer, processing one two grade blade 4 averagely need to spend 3.5 hours, because the processing method be pure manual processing make second level The processing quality of blade 4 can not be unified.
In addition there are a kind of method for processing two grade blades 4 using Four-axis milling center, processing method benefit in the prior art A kind of tooling is used, the tooling includes collet 9 and top cover 10, and the left end of the collet 9 offers V-arrangement flank of tooth slot, the flank of tooth 11 secure fit of tenon of slot and two grade blades 4, the right side shape of the collet are in cylindrical body, the periphery clamping of the cylindrical body On the chuck at Four-axis milling center, the right end of the top cover 10 offers square groove, the work of the groove and two grade blades 4 The left end of platform secure fit, the top cover 10 offers centre bore, which holds out against on tailstock centre, the collet 9 Left side shape is in cube, and the leading flank of the cube is fixed with baffle, and the trailing flank of the cube is fixed with pressing plate, the baffle With pressing plate for two grade blades 4 tenon 12 the V-arrangement flank of tooth trough inner water square to limit, two grade blades 4 add in four axis Clamping is in the tooling in the way of above-mentioned one top of a folder on work center, after clamping, the top surface of the cube and level Face is parallel, in process: Four-axis milling center drives two grade blades 4 to rotate different angles to second level leaf by chuck The face to be processed of piece 4 carries out milling.
The above-mentioned method that two grade blades 4 are processed on Four-axis milling center has the following problems: used in the processing method Tooling carries out clamping in two grade blade 4 of clamping, by the way of one top of a folder, because of the knot at the face to be processed of two grade blades 4 It is configured that shape is relatively thin, so the installation way on one top of a folder can make the blade 4 after clamping by certain axial force and cause Flexible deformation occurs in it, and when completion of processing and after unclamp tailstock centre, internal stress suffered by two grade blades 4 is died off, at this time The blade face shape processed produce be resiliently deformed and result in two grade blades 4 processing it is unqualified, while being used when clamping Centre bore is the same centre bore, therefore produces clamping error;The cutter that the face to be processed of two grade blade 4 of milling uses is D8r4 ball head knife, the ball head knife diameter is small and rigidity is relatively poor, while because more than the processing in each section of blade of two grade blades 4 Measure it is inconsistent, so limit the feeding speed of cutter when milling, the blade of the blade 4 when Milling Process do not have Auxiliary support into One step results in serious vibration knife phenomenon, and serious vibration knife phenomenon, which results in machined surface quality difference while further limiting, to be added The feeding speed of working hour cutter;One two grade blade 4 of processing take around 5 hours, and the passing rate of processing of two grade blades 4 about exists 30%, therefore the processing efficiency of this processing method and processing quality fall flat.
Utility model content
The technical problems to be solved in the utility model is by a kind of two grade blade of processing airspace engine free turbine The finishing to two grade blades face to be processed can be completed on three axis machining center, get rid of for tooling, the tooling of the utility model Dependence of the existing processing method to Four-axis milling center or manual processing;Using this tooling process two grade blades high-efficient and Time saving, under the premise of guaranteeing second level leaf quality qualification rate, the processing quality in each two grade blades face to be processed is unified.
In order to solve the above technical problems, the technical solution adopted in the utility model be to provide a kind of processing aero-engine from By the tooling of two grade blade of turbine, including pedestal, the arranged on left and right sides of the pedestal is equipped with a vertical left and right supporting part, The left supporting part is equipped with collet, and the right side of the collet is equipped with V-arrangement flank of tooth slot;
The medial surface of the right supporting part is equipped with top cover, and the left side of the top cover offers rectangular channel, two grade blades The workbench of right end and the rectangular channel secure fit, the tenon secure fit of the V-arrangement flank of tooth slot and two grade blade left ends.
Further, the bottom surface of the pedestal is in plane and is bonded with the work top at three axis machining center, the bottom The left and right both ends of seat bottom are equipped with the left and right extension an of horizontal direction, and the pedestal is pressed on described by pressing plate The top surface of left and right extension with the work top at three axis machining center to mutually fix;The shape feature of the bottom of the pedestal It ensure that the position precision of two grade blades of the clamping in tooling.
Further, the left and right supporting part of the pedestal is equipped with left and right support holes point in the horizontal direction
Yong Yu not support collet and top cover, the center line of the left and right support holes on the same line and with the pedestal Bottom surface it is parallel;The position feature of the left and right end support holes ensure that the position precision of two grade blades of the clamping in tooling.
Further, the top surface of the left supporting part of the pedestal is equipped with a location hole, institute in the vertical direction
The top surface for stating the right supporting part of pedestal is equipped with a threaded hole in the vertical direction, the location hole and threaded hole from The top surface for the supporting part respectively held is through to the inner surface of respectively end support holes, the center line of the location hole and threaded hole with The center line of the left and right support holes of pedestal intersects;The position feature of the location hole ensure that the positioning pin of pedestal positioning hole It can be smoothly inserted into the positioning hole of collet, the position feature of the threaded hole ensure that the jackscrew in base threaded hole can be withstood on In the annular groove of set;
Further, the left side of the collet is equipped with external screw thread, a nut is combined on the external screw thread;Institute
The tightening force for stating folder nut can solve rolling between the location hole of collet and the clearance fit bring part of positioning pin Dynamic problem guarantees that two grade blades keep being completely fixed in tooling.
Further, the right side shape of the collet is in cube, the right side of the cube offers in the horizontal direction One V-arrangement flank of tooth slot, the upper and lower groove face of the V-shaped groove is toothed surfaces, the groove face of the V-arrangement flank of tooth slot and the tenon of two grade blades The face portion cooperation of head;Horizontally left direction offers a rectangular channel for the groove face angle of the V-arrangement flank of tooth slot, described The cube is divided into upper portion and lower section by collet by rectangular channel, offers a spiral shell on the upper side of the cube vertically Pit simultaneously runs through the upper portion, offers a through-hole on the bottom side of institute's cube vertically and runs through the lower section, described The center line of through-hole and threaded hole is on the same line;The leading flank of the upper portion offer two not through threaded hole, Two threaded holes are used for fixed baffle;The trailing flank in the upper and lower portion offer one not through threaded hole, institute Threaded hole is stated for installing pressing plate;The right side structure feature of the collet ensure that its stability fixed with tongue portion.
Further, the middle part shape of the collet is in cylindrical body, a left side for the periphery of the cylindrical body and the pedestal Support holes cooperation, the cylindrical body opened up respectively on the different directions of periphery there are four not through location hole, it is described fixed The direction that opens up in position hole is corresponded with four face directions to be processed of two grade blades respectively, and the axis of four location holes is equal On the same section of the cylindrical body, the size of four location holes and the location hole size one of the left supporting part top surface of pedestal It causes.Positioning pin in the location hole of the left supporting part top surface of pedestal may be reversed two by four location holes cooperation with collet respectively Each face to be processed of grade blade is processed, and drives part rotation to be processed with chuck instead of on Four-axis milling center, The position feature of four location holes ensure that the positioning pin of the positioning hole of pedestal can smoothly be inserted into the positioning hole of collet.
Further, the left side level of the top cover offers a rectangular channel and the workbench phase with two grade blades Cooperation, the upper side of the rectangular channel offer a perforative threaded hole vertically upward, offer one in the middle part of the top cover Annular groove, the axis alignment of the top surface threaded hole of the right supporting part at the middle part and pedestal of the annular groove;Top cover left side The position feature of rectangular channel ensure that the position precision for two grade blades being mounted in tooling, and the position feature of annular groove ensure that Jackscrew in the top surface threaded hole of the right supporting part of pedestal can be held out against in the annular groove of top cover, prevent top tight position to top cover with The scratch of seat.
The utility model has the beneficial effects that used in the tooling comparison Four-axis milling center processing method of the utility model Tooling, the tooling of the utility model are added to pedestal, and in the processing method of Four-axis milling center with tooling on the basis of do Part-structure change;The utility model tooling is in the assembly installation process with two grade blades: top cover and pedestal pass through screw Fixation is held out against, collet is positioned with pedestal by the positioning pin in location hole, the tenon of two grade blades and the V-arrangement flank of tooth of collet Slot is fixed with merga pass screw thread, and the workbench of two grade blades and top cover hold out against fixation by screw, after clamping, institute The upper side for stating the cube on the right side of collet is parallel with the bottom surface of pedestal;Between existing because of the cooperation between above-mentioned location hole and positioning pin Gap, above-mentioned fit clearance causes the shaking between part to eliminate by the tightening force of the nut on the external screw thread on the left of collet, above-mentioned In the fixation of two grade blades generated axial force, the dress of the utility model tooling are not pushed up by a folder one in Four-axis milling method Clamping method is more firm so the better D12r6 ball head knife of intensity can be used in process carries out machining, because of second level leaf The clamping method of piece is firm and has used the better cutter of intensity, therefore feeding speed of the cutter in milling can greatly improve, And the vibration knife phenomenon in process is obviously reduced, therefore processing efficiency has obtained biggish promotion, averagely processes a second level Blade only needs 2 hours;The positioning pin of the positioning hole of the left supporting part top surface of pedestal, by matching from location holes different on collet The each face to be processed for closing turnable two grade blades is processed, and drives part rotation with chuck instead of on Four-axis milling center It is processed, therefore the finishing to two grade blades face to be processed can be completed on three axis machining center using this tooling;Cause Belong to machining using the method that this tooling processes two grade blades, positioning is reliable and accurately when clamping, therefore two grade blades are to be added The processing quality in work face can guarantee unified.
Detailed description of the invention
In order to clearly illustrate the innovative principle and its advantage compared with the prior art of utility model, below by way of attached drawing Illustrate possible embodiment by the non-limiting example of the application principle.In figure:
Fig. 1 is the tooling of two grade blade of processing aero-engine free turbine of the utility model and the assembly of two grade blades Perspective view;
Fig. 2 is the perspective view of two grade blade of aero-engine free turbine;
Fig. 3 is the perspective view of tooling used in Four-axis milling method;
Fig. 4 is the main view of collet;
Fig. 5 is the cross-sectional view of the positioning bore portion of collet;
Fig. 6 is the rearview of Fig. 4;
Fig. 7 is the perspective view of top cover;
Fig. 8 is the V-arrangement flank of tooth slot of collet and the enlarged drawing of second level blade tenon part occlusion portion.
Specific embodiment
Such as Fig. 1, a kind of two grade blade recruitment of processing aero-engine free turbine dress of the present embodiment, including pedestal 1, institute The arranged on left and right sides for stating pedestal 1 is equipped with vertical left supporting part 1-1, a right supporting part 1-2, and the left supporting part is equipped with The right side of collet 2, the collet 2 is equipped with V-arrangement flank of tooth slot;
The medial surface of the right supporting part is equipped with top cover 3, and the left side of the top cover 3 offers rectangular channel, second level leaf The tenon 11 of the workbench 12 of 4 right end of piece and the rectangular channel secure fit, 4 left end of the V-arrangement flank of tooth slot and two grade blades is solid Fixed cooperation.
The bottom surface of the pedestal 1 is bonded in plane and with the work top at three axis machining center, 1 bottom of pedestal Left and right both ends are equipped with the left and right extension an of horizontal direction, and the pedestal 1 is pressed on the left and right extension by pressing plate The top surface in portion with the work top at three axis machining center to mutually fix;
The left and right supporting part of the pedestal 1 is equipped with left and right support holes in the horizontal direction and is respectively used to support
Collet 2 and top cover 3, the center line of the left and right support holes are on the same line and flat with the bottom surface of the pedestal 1 Row;
The top surface of the left supporting part of the pedestal 1 is equipped with a location hole, the right bearing of the pedestal 1 in the vertical direction The top surface in portion is equipped with a threaded hole in the vertical direction, and the location hole and threaded hole are passed through from the top surface for the supporting part respectively held It wears to the inner surface of respective end support holes, the center line of the location hole and threaded hole is and in the left and right support holes of pedestal 1 The intersection of heart line.
The left side of the collet 2 is equipped with external screw thread, is combined with a nut on the external screw thread;
The right side shape of the collet 2 is in cube, and the right side of the cube offers a V-arrangement flank of tooth in the horizontal direction The upper and lower groove face of slot, the V-shaped groove is toothed surfaces, the flank of tooth of the tenon 11 of the groove face of the V-arrangement flank of tooth slot and two grade blades 4 Part cooperates;Horizontally left direction offers a rectangular channel for the groove face angle of the V-arrangement flank of tooth slot, and the rectangular channel will The cube is divided into upper portion and lower section by collet 2, offers a threaded hole on the upper side of the cube vertically simultaneously Through the upper portion, a through-hole is offered on the bottom side of institute's cube vertically and through the lower section, the through-hole and The center line of threaded hole is on the same line;The leading flank of the upper portion offer two not through threaded hole, described two Threaded hole is used for fixed baffle 13;The trailing flank in the upper and lower portion offer one not through threaded hole, the spiral shell Pit is for installing pressing plate;
The middle part shape of the collet 2 is in cylindrical body, and the periphery of the cylindrical body and the left support holes of the pedestal 1 are matched Close, the cylindrical body opened up respectively on the different directions of periphery there are four not through location hole, the location hole opens Set direction is corresponded with four face directions to be processed of two grade blades 4 respectively, and the axis of four location holes is described On the same section of cylindrical body, the size of four location holes and the location hole of the left supporting part top surface of pedestal 1 are in the same size.
The left side level of the top cover 3 offers a rectangular channel and matches with the workbench 12 of two grade blades 4, institute The upper side for stating rectangular channel offers a perforative threaded hole vertically upward, and the middle part of the top cover 3 offers an annular Slot, the axis alignment of the top surface threaded hole of the right supporting part at the middle part and pedestal 1 of the annular groove, the right side shape of the top cover 3 Shape is in cylindrical body, the right support holes cooperation of the cylindrical body and the pedestal 1.
The two grade blade recruitment of processing aero-engine free turbine of the present embodiment fills, in the assembly peace with two grade blades 4 During dress: top cover 3 holds out against fixation by screw with pedestal 1, and collet 2 and pedestal are determined by the positioning pin in location hole Position, the tenon 11 of two grade blades are fixed with the V-arrangement flank of tooth slot of collet 2 with merga pass screw thread, the workbench of two grade blades 4 12 hold out against fixation by screw with top cover 3, after clamping, the upper side of the cube on 2 right side of collet and the bottom surface of pedestal 1 In parallel;Because the cooperation between above-mentioned location hole and positioning pin is there are gap, above-mentioned fit clearance causes the shaking between part to pass through folder The tightening force of nut on the external screw thread in first 2 left side is eliminated, not by Four-axis milling method in the fixation of above-mentioned two grade blade 4 One folder one pushes up generated axial force, and the clamping method of the utility model tooling is more firm so can be used in process strong It spends better D12r6 ball head knife and carries out machining, because the clamping method of two grade blades 4 is firm and has used the better knife of intensity Tool, therefore feeding speed of the cutter in milling can greatly improve, and the vibration knife phenomenon in process is obviously reduced, therefore add Work efficiency rate has obtained biggish promotion, and averagely processing two grade blades 4 only needs 2 hours;The top surface of the left supporting part of pedestal 1 The positioning pin of positioning hole, by from location holes different on collet cooperation may be reversed two grade blades 4 each face to be processed into Row processing is driven part rotation to be processed, therefore is added using this tooling in three axis instead of on Four-axis milling center with chuck The finishing to the face to be processed of two grade blade 4 can be completed on work center;Because processing the method category of two grade blades 4 using this tooling It is reliably and accurate to position when machining, clamping, therefore the processing quality in the face to be processed of two grade blade 4 can guarantee unification.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, under the premise of not departing from principle described in the utility model, also it can make several improvements and retouch, these are improved and profit Decorations also should be regarded as the protection scope of the utility model.

Claims (3)

1. a kind of two grade blade recruitment of processing aero-engine free turbine dress, including pedestal (1), which is characterized in that the bottom The arranged on left and right sides of seat (1) is equipped with left and right supporting part (1-1,1-2) vertically respectively, and the left supporting part is equipped with collet (2), institute The right side for stating collet (2) is equipped with V-arrangement flank of tooth slot;
The medial surface of the right supporting part is equipped with top cover (3), and the left side of the top cover (3) is equipped with rectangular channel, second level leaf The workbench (12) of piece (4) right end and the rectangular channel secure fit, the tenon of the V-arrangement flank of tooth slot and two grade blades (4) left end Head (11) secure fit.
2. tooling as described in claim 1, it is characterised in that: the left part of the collet (2) is in cylindrical body, the cylindrical body The left support holes of periphery and the pedestal (1) cooperate, the cylindrical body be distributed on the circumferential surface there are four positioning counterbore, it is each fixed The direction that opens up of position counterbore is corresponded with four face directions to be processed of two grade blades (4) respectively, four positioning counterbores Axis on the same section of the cylindrical body, the size of four positioning counterbores respectively with pedestal (1) left supporting part The location hole of top surface is in the same size.
3. tooling as described in claim 1, it is characterised in that: the left side of the top cover (3)
Level offers a rectangular channel, and the workbench (12) of the rectangular channel and two grade blades (4) right end plugs cooperation, described The upper side of rectangular channel offers a perforative threaded hole vertically upward, offers an annular in the middle part of the top cover (3) The axis of the top surface threaded hole of slot, the middle part of the annular groove and the right supporting part is aligned, the right end of the top cover (3) and institute State the right support holes cooperation of pedestal (1).
CN201820910815.7U 2018-06-13 2018-06-13 Process two grade blade recruitment of aero-engine free turbine dress Active CN208556736U (en)

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Application Number Priority Date Filing Date Title
CN201820910815.7U CN208556736U (en) 2018-06-13 2018-06-13 Process two grade blade recruitment of aero-engine free turbine dress

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113182906A (en) * 2021-06-16 2021-07-30 中国航发航空科技股份有限公司 Aeroengine turbine blade machining clamp and clamping method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113182906A (en) * 2021-06-16 2021-07-30 中国航发航空科技股份有限公司 Aeroengine turbine blade machining clamp and clamping method thereof
CN113182906B (en) * 2021-06-16 2022-12-09 中国航发航空科技股份有限公司 Aeroengine turbine blade machining clamp and clamping method thereof

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