CN103286437B - Drum barrel flywheel friction welding clamp system before engine - Google Patents
Drum barrel flywheel friction welding clamp system before engine Download PDFInfo
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- CN103286437B CN103286437B CN201210050764.2A CN201210050764A CN103286437B CN 103286437 B CN103286437 B CN 103286437B CN 201210050764 A CN201210050764 A CN 201210050764A CN 103286437 B CN103286437 B CN 103286437B
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Abstract
Drum barrel flywheel friction welding clamp system before engine, its clamping structure mode adopting machinery, hydraulic system and low temperature grease tension mechanism to combine; Wherein: the mechanical clamping structure of Outer Taper in tailstock clamp part to be processed adopts; For strengthening soldering reliability, elasticity semi-ring is adopted to tighten up part to be processed at weld parts place so that gain in strength control weld parts distortion; Main shaft fixture adopts low temperature grease tension mechanism, correspondingly the hermetically-sealed construction of sealing applications O RunddichtringO and semicircular arc support rubber ring and corresponding with equipment oil circuit interface identical.Friction welding (FW) fixture of the present invention makes rotor connection quality and production efficiency have to improve significantly, ensure that the machining accuracy of part and the service life of friction welding (FW) fixture, reduce the manufacturing cost of frock, improve the reliability that frock uses, meet production scene and technological requirement.
Description
Technical field
The present invention relates to inertia friction weld clamp structure design and devdlop technical field, specifically provide drum barrel flywheel friction welding clamp system before a kind of engine.
Background technology
The process of flywheel friction welding, is that the main shaft of dress flywheel and part is accelerated to required rotating speed, then under welding pressure effect, pushes the part do not rotated on tailstock to main parts on shaft, make it contact and produce friction.Along with the carrying out of process, the speed of mainshaft constantly reduces, and the kinetic energy that flywheel stores is converted to heat energy, adds thermowelding surfaces.Along with the rising of temperature, face of weld constantly produces adhesion and shearing, and when face of weld is heated to mecystasis, and when the intensity of whole face of weld adhesion is greater than the intensity of shearing, main shaft is automatic stopping at once, and welding process completes.That is, friction welding is the increase along with friction pressure, and the energy that frictional interface consumes increases, and the energy stored in advance just consumes soon, and the required friction welding time is just short.So inertia friction weld main shaft jig Design just needs part accurate positioning blind-mate structure, and working strength is large, good seal performance, must ensure that flywheel friction welding main shaft fixture uses reliable.
Flywheel friction welding welding fixture belongs to machinery, the clamping structure mode that hydraulic system and low temperature grease combine, company is first by certain emphasis model one, the welding of secondary wheel assemblies adopts flywheel friction welding connection technology, aviation also belongs to first Application at home, for a design bold trial especially of flywheel friction welding welding fixture, flywheel friction welding welding job intensity is large, require jig Design good seal performance, part accurate positioning blind-mate structure and fixture use reliable, friction welding (FW) jig Design and external introducing equipment Connection Element can exchange, to meet the requirement of inertia friction weld technological parameter.
The development and design of friction welding (FW) fixture, all has a significant impact rotor connection quality and production efficiency.Low temperature grease tensioner internal oil passages and encapsulating method are without any can data for reference.The important topic that domestic air mail manufacturing industry faces to the research and development of technique.
People urgently catch at drum barrel flywheel friction welding clamp system before the excellent engine of a kind of technique effect.
Summary of the invention
The object of this invention is to provide drum barrel flywheel friction welding clamp system before the excellent engine of a kind of technique effect.
The invention provides drum barrel flywheel friction welding clamp system before a kind of engine, it is characterized in that: its clamping structure mode adopting machinery, hydraulic system and low temperature grease tension mechanism to combine; Wherein:
The mechanical clamping structure of Outer Taper in tailstock clamp part to be processed adopts; For strengthening soldering reliability, elasticity semi-ring is adopted to tighten up part to be processed at weld parts place so that gain in strength control weld parts distortion;
Main shaft fixture adopts low temperature grease tension mechanism, correspondingly the hermetically-sealed construction of sealing applications O RunddichtringO and semicircular arc support rubber ring and corresponding with equipment oil circuit interface identical.
Described tailstock fixture is specifically configured to: inner conical drogue 2, external conical sleeve 3; The two coordinates the positioning seat 1 be arranged on as jig main body outside in pairs, and the lateral surface of inner conical drogue 2 and the medial surface of external conical sleeve 3 are formed and coordinate contact surface; Inner conical drogue 2 medial surface and formed with the corresponding lateral surface of the positioning seat 1 that it contacts and coordinate contact surface; External conical sleeve 3 outer ring holds out against the inner ring of drum barrel before the engine as work piece part.
Before part to be processed engine, the inner circle seam of drum barrel is Φ 238.6
+ 0.05location, jig Design adopts inner conical drogue 2, external conical sleeve 3 to coordinate the Tensioning structure formed, and is screwed, make part to be processed inner stopper by tensioner external conical sleeve 3 spreading by inner conical drogue 2 screw thread, eliminates the positioning gap of part to be processed.See Fig. 1.
Flywheel friction welding is that the main shaft of dress flywheel and part is accelerated to required rotating speed, then under welding pressure effect, pushes the part do not rotated on tailstock to main parts on shaft, makes it contact and produce friction.Accordingly, elastic protection circle 4 is also provided with close to weld parts surface in drum barrel flywheel friction welding clamp system so that auxiliary positioning strengthens the intensity of part before described engine, its elasticity semi-loop adopting overall processing two semi-ring to form, is clamped on the outside diameter of part to be processed end face to be welded;
Being constructed as follows of elastic protection circle 4: outer positioning ring 401, elasticity semi-ring 402; Outer positioning ring 401 is arranged in outside elasticity semi-ring 402 and the two is formed and coordinates contact;
The cylindrical of elasticity semi-ring 402 to be pressurizeed by oil nozzle oil-feed by outer positioning ring 401 and outer positioning ring 401 is out of shape clamped by elasticity semi-ring 402.Structure is as Fig. 2.
Require coordinating between outer positioning ring 401 with elasticity semi-ring 402 as interference fits, if the cylindrical fit clearance of the inner circle of outer positioning ring 401 and elasticity semi-ring 402 is excessive, after pressurization, O RunddichtringO 6 under pressure, make can not play sealing function outside sealing ring extruding groove, if gap is too small, elasticity semi-ring 402 and outer positioning ring 401 are just difficult to assemble.Elasticity semi-ring 402 tensioner acting on part to be processed is made, due to part to be processed inner stopper Φ 238.6 by inner conical drogue 2 and the distortion of external conical sleeve 3
+ 0.05locate, so just require that outer positioning ring 401 controls within the scope of tolerance+0.01mm with the axiality of part to be processed, external conical sleeve 3.
Also be provided with in drum barrel flywheel friction welding clamp system before described engine: be out of shape rise ring 5, O RunddichtringO 6, semicircular arc support rubber ring 7; Wherein:
The cylindrical of part to be processed tightens up by elastic protection circle 4, is out of shape rise ring 5, O RunddichtringO 6 and semicircular arc support rubber ring 7 and is clamped by the elasticity semi-ring 402 be fixed tightly on part to be processed; The distortion ring 5 that rises is arranged in elastic protection circle 4 cylindrical side and the two contacts with each other; Semicircular arc support rubber ring 7 is arranged in distortion and rises ring 5 cylindrical side, and semicircular arc support rubber ring 7 and distortion are risen between ring 5 and formed hermetically-sealed construction by O RunddichtringO 6; As Fig. 3.
According to the height dimension of part to be processed, the corresponding location parameter of each structure in drum barrel flywheel friction welding clamp system can be revised before engine of the present invention.Tailstock fixture can be moved forward, carry out prewelding experimental tests and a pressure answers back to test; Then move suitable distance by after tailstock fixture, measuring surface is beated so that the requirement met the specification.Surface jitter value should be not more than 0.05mm.
According to process parameter value, tailstock fixture can be slid onto position to be welded to major axes orientation and then carry out part to be processed soldering test.
Check beating of all sizes after welding, meet technological requirement, the quality of visual examination weld seam overlap, ensure that weld seam overlap is even.
Before engine of the present invention, drum barrel Friction welding technique difficult point is as follows: 1) after drum barrel welding, axiality is not more than 0.15mm; 2) friction welding technological strictly controls the weld shrinkage tolerance between every two-stage dish, is generally no more than ± 0.25mm.This brings certain difficulty to friction welding jig Design and welding procedure, in friction welding process, ensures the axiality after two dish welding, and weld seam carries out ultrasonic inspection, heat treatment and subsequent mechanical processing.
In actual applications, the clamping of welded disc meets following requirement:
1) tailstock end: with one-level dish axle web inner stopper location, hold out against end standard, tensioner is close to weld part outer; 2) spindle end: with secondary dish axle web inner stopper location, hold out against end standard.
In order to prevent the distortion in welding process, the external diameter tightening that one-level all overlapping and has turn, compressing with the tension force of grease dish; As can be seen here, one-level dish axle web inner stopper is located, and the welding precision of I precision on whole drum barrel that add holding out against end standard has direct impact.
Inertia friction welding technology is one of state-of-the-art solder technology in the world, and it is the key technology of welding modern aeroengine compressor rotor.Friction welding (FW) fixture is the critical component in precision friction weldering solder technology, the development and design of friction welding (FW) fixture of the present invention, rotor connection quality and production efficiency are had improve significantly, ensure that the machining accuracy of part and the service life of friction welding (FW) fixture, reduce the manufacturing cost of frock, improve the reliability that frock uses, meet production scene and technological requirement.
In the cases of engineering that the present invention is corresponding, in thin-wall part process, use frock clamp effectively can improve the distortion of thin-wall part, reduce the vibration adding man-hour.Slide block tensioning clamper can self-centering and Clamp blocks effectively, improves part processing precision.Use inner bearing type expander vibration-proof structure and over-sleeved vibration-proof structure to reduce cutting vibration in thin-wall part processing, improve the rigidity of part.
The invention belongs to the clamping structure mode that machinery, hydraulic system and low temperature grease combine, the design of drum barrel inertia friction weld fixture clamping mechanism and encapsulating method research before a kind of engine, before being used in aero-engine, drum barrel inertia friction weld is technical, effect of field application is fine, can meet design technology requirement.
Inertia friction weld main shaft fixture of the present invention, rotor connection quality and production efficiency will be made to have and to improve significantly.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is the tailstock clamp structure simplified schematic diagram before engine in drum barrel flywheel friction welding clamp system;
Fig. 2 is the structural representation sketch front view of elastic protection circle 4;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the upward view corresponding with Fig. 2;
Fig. 5 is drum barrel flywheel friction welding clamp system simplified schematic diagram before engine; Reference numeral 10 represents part to be processed (before engine drum barrel).
Detailed description of the invention
Embodiment 1
Drum barrel flywheel friction welding clamp system before a kind of engine, its clamping structure mode adopting machinery, hydraulic system and low temperature grease tension mechanism to combine; Wherein:
The mechanical clamping structure of Outer Taper in tailstock clamp part to be processed adopts; For strengthening soldering reliability, elasticity semi-ring is adopted to tighten up part to be processed at weld parts place so that gain in strength control weld parts distortion; Main shaft fixture adopts low temperature grease tension mechanism, correspondingly the hermetically-sealed construction of sealing applications O RunddichtringO and semicircular arc support rubber ring and corresponding with equipment oil circuit interface identical.
Described tailstock fixture is specifically configured to: inner conical drogue 2, external conical sleeve 3; The two coordinates the positioning seat 1 be arranged on as jig main body outside in pairs, and the lateral surface of inner conical drogue 2 and the medial surface of external conical sleeve 3 are formed and coordinate contact surface; Inner conical drogue 2 medial surface and formed with the corresponding lateral surface of the positioning seat 1 that it contacts and coordinate contact surface; External conical sleeve 3 outer ring holds out against the inner ring of drum barrel before the engine as work piece part.Before part to be processed engine, the inner circle seam of drum barrel is Φ 238.6
+ 0.05location, jig Design adopts inner conical drogue 2, external conical sleeve 3 to coordinate the Tensioning structure formed, and is screwed, make part to be processed inner stopper by tensioner external conical sleeve 3 spreading by inner conical drogue 2 screw thread, eliminates the positioning gap of part to be processed.See Fig. 1.
Flywheel friction welding is that the main shaft of dress flywheel and part is accelerated to required rotating speed, then under welding pressure effect, pushes the part do not rotated on tailstock to main parts on shaft, makes it contact and produce friction.Accordingly, elastic protection circle 4 is also provided with close to weld parts surface in drum barrel flywheel friction welding clamp system so that auxiliary positioning strengthens the intensity of part before described engine, its elasticity semi-loop adopting overall processing two semi-ring to form, is clamped on the outside diameter of part to be processed end face to be welded;
Being constructed as follows of elastic protection circle 4: outer positioning ring 401, elasticity semi-ring 402; Outer positioning ring 401 is arranged in outside elasticity semi-ring 402 and the two is formed and coordinates contact; The cylindrical of elasticity semi-ring 402 to be pressurizeed by oil nozzle oil-feed by outer positioning ring 401 and outer positioning ring 401 is out of shape clamped by elasticity semi-ring 402.Structure is as Fig. 2.
Require coordinating between outer positioning ring 401 with elasticity semi-ring 402 as interference fits, if the cylindrical fit clearance of the inner circle of outer positioning ring 401 and elasticity semi-ring 402 is excessive, after pressurization, O RunddichtringO 6 under pressure, make can not play sealing function outside sealing ring extruding groove, if gap is too small, elasticity semi-ring 402 and outer positioning ring 401 are just difficult to assemble.Elasticity semi-ring 402 tensioner acting on part to be processed is made, due to part to be processed inner stopper Φ 238.6 by inner conical drogue 2 and the distortion of external conical sleeve 3
+ 0.05locate, so just require that outer positioning ring 401 controls within the scope of tolerance+0.01mm with the axiality of part to be processed, external conical sleeve 3.
Also be provided with in drum barrel flywheel friction welding clamp system before described engine: be out of shape rise ring 5, O RunddichtringO 6, semicircular arc support rubber ring 7; Wherein: the cylindrical of part to be processed tightens up by elastic protection circle 4, be out of shape rise ring 5, O RunddichtringO 6 and semicircular arc support rubber ring 7 the elasticity semi-ring 402 be fixed tightly on part to be processed is clamped; The distortion ring 5 that rises is arranged in elastic protection circle 4 cylindrical side and the two contacts with each other; Semicircular arc support rubber ring 7 is arranged in distortion and rises ring 5 cylindrical side, and semicircular arc support rubber ring 7 and distortion are risen between ring 5 and formed hermetically-sealed construction by O RunddichtringO 6; As Fig. 3.
According to the height dimension of part to be processed, the corresponding location parameter of each structure in drum barrel flywheel friction welding clamp system can be revised before engine described in the present embodiment.Tailstock fixture can be moved forward, carry out prewelding experimental tests and a pressure answers back to test; Then move suitable distance by after tailstock fixture, measuring surface is beated so that the requirement met the specification.Surface jitter value should be not more than 0.05mm.
According to process parameter value, tailstock fixture can be slid onto position to be welded to major axes orientation and then carry out part to be processed soldering test.
Check beating of all sizes after welding, meet technological requirement, the quality of visual examination weld seam overlap, ensure that weld seam overlap is even.
Before described engine, drum barrel Friction welding technique difficult point is as follows: 1) after drum barrel welding, axiality is not more than 0.15mm; 2) friction welding technological strictly controls the weld shrinkage tolerance between every two-stage dish, is generally no more than ± 0.25mm.This brings certain difficulty to friction welding jig Design and welding procedure, in friction welding process, ensures the axiality after two dish welding, and weld seam carries out ultrasonic inspection, heat treatment and subsequent mechanical processing.
In actual applications, the clamping of welded disc meets following requirement:
1) tailstock end: with one-level dish axle web inner stopper location, hold out against end standard, tensioner is close to weld part outer; 2) spindle end: with secondary dish axle web inner stopper location, hold out against end standard.
In order to prevent the distortion in welding process, the external diameter tightening that one-level all overlapping and has turn, compressing with the tension force of grease dish; As can be seen here, one-level dish axle web inner stopper is located, and the welding precision of I precision on whole drum barrel that add holding out against end standard has direct impact.
Inertia friction welding technology is one of state-of-the-art solder technology in the world, and it is the key technology of welding modern aeroengine compressor rotor.Friction welding (FW) fixture is the critical component in precision friction weldering solder technology, the development and design of friction welding (FW) fixture described in the present embodiment, rotor connection quality and production efficiency are had improve significantly, ensure that the machining accuracy of part and the service life of friction welding (FW) fixture, reduce the manufacturing cost of frock, improve the reliability that frock uses, meet production scene and technological requirement.
In the cases of engineering that the present embodiment is corresponding, in thin-wall part process, use frock clamp effectively can improve the distortion of thin-wall part, reduce the vibration adding man-hour.Slide block tensioning clamper can self-centering and Clamp blocks effectively, improves part processing precision.Use inner bearing type expander vibration-proof structure and over-sleeved vibration-proof structure to reduce cutting vibration in thin-wall part processing, improve the rigidity of part.
The present embodiment belongs to the clamping structure mode that machinery, hydraulic system and low temperature grease combine, the design of drum barrel inertia friction weld fixture clamping mechanism and encapsulating method research before a kind of engine, before being used in aero-engine, drum barrel inertia friction weld is technical, effect of field application is fine, can meet design technology requirement.Inertia friction weld described in the present embodiment with main shaft fixture, will make rotor connection quality and production efficiency have and improve significantly.
Claims (3)
1. drum barrel flywheel friction welding clamp system before engine, its clamping structure mode adopting machinery, hydraulic system and low temperature grease tension mechanism to combine; Wherein:
The mechanical clamping structure of Outer Taper in tailstock clamp part to be processed adopts; For strengthening soldering reliability, elasticity semi-ring is adopted to tighten up part to be processed so that gain in strength control part to be processed welding deformation at part to be processed weld;
Main shaft fixture adopts low temperature grease tension mechanism, correspondingly the hermetically-sealed construction of sealing applications O RunddichtringO and semicircular arc support rubber ring and corresponding with equipment oil circuit interface identical;
It is characterized in that: described tailstock fixture is specifically configured to: inner conical drogue (2), external conical sleeve (3); The two coordinates the positioning seat (1) be arranged on as jig main body outside in pairs, and the lateral surface of inner conical drogue (2) and the medial surface of external conical sleeve (3) are formed and coordinate contact surface; Inner conical drogue (2) medial surface and formed with the corresponding lateral surface of the positioning seat that it contacts (1) and coordinate contact surface; External conical sleeve (3) outer ring holds out against the inner ring of drum barrel before the engine as part to be processed.
2. according to drum barrel flywheel friction welding clamp system before engine described in claim 1, it is characterized in that: before described engine, in drum barrel flywheel friction welding clamp system, be also provided with elastic protection circle (4) close to part to be processed face of weld place, be clamped on the outside diameter of part to be processed end face to be welded;
Being constructed as follows of elastic protection circle (4): outer positioning ring (401), elasticity semi-ring (402); Outer positioning ring (401) is arranged in elasticity semi-ring (402) outside and the two forms cooperation contact;
The cylindrical of elasticity semi-ring (402) makes outer positioning ring (401) distortion be clamped by elasticity semi-ring (402) by outer positioning ring (401) by oil nozzle oil-feed pressurization;
Require coordinating between outer positioning ring (401) with elasticity semi-ring (402) as interference fits.
3. according to drum barrel flywheel friction welding clamp system before engine described in claim 2, it is characterized in that: be also provided with in drum barrel flywheel friction welding clamp system before described engine: be out of shape rise ring (5), O RunddichtringO (6), semicircular arc support rubber ring (7); Wherein:
The cylindrical of part to be processed tightens up by elastic protection circle (4), is out of shape elasticity semi-ring (402) clamping that rise ring (5), O RunddichtringO (6) and semicircular arc support rubber ring (7) will be fixed tightly on part to be processed; The distortion ring (5) that rises is arranged in elastic protection circle (4) cylindrical side and the two contacts with each other; Semicircular arc support rubber ring (7) is arranged in distortion and rises ring (5) cylindrical side, and semicircular arc support rubber ring (7) and distortion are risen between ring (5) and formed hermetically-sealed construction by O RunddichtringO (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050764.2A CN103286437B (en) | 2012-02-29 | 2012-02-29 | Drum barrel flywheel friction welding clamp system before engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210050764.2A CN103286437B (en) | 2012-02-29 | 2012-02-29 | Drum barrel flywheel friction welding clamp system before engine |
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| CN103286437A CN103286437A (en) | 2013-09-11 |
| CN103286437B true CN103286437B (en) | 2016-04-27 |
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| CN201210050764.2A Active CN103286437B (en) | 2012-02-29 | 2012-02-29 | Drum barrel flywheel friction welding clamp system before engine |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567535B (en) * | 2013-11-04 | 2016-08-24 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of overall drum barrel processing technique manufacture method |
| CN107971625B (en) * | 2017-11-24 | 2020-04-10 | 中国航发沈阳黎明航空发动机有限责任公司 | Special method for adjusting coaxiality of spindle side and tailstock side of inertia friction welding machine |
| CN108000448A (en) * | 2017-12-05 | 2018-05-08 | 内蒙古航天红峡化工有限公司 | A kind of solid propellant rocket support roller protective device and application method |
| CN113547198A (en) * | 2021-08-16 | 2021-10-26 | 哈尔滨焊接研究院有限公司 | Inertia friction welding device and method for turbine disc shaft of aircraft engine |
| CN113927153B (en) * | 2021-11-10 | 2022-05-13 | 中国兵器工业第五九研究所 | Multi-stage pressure friction welding control and quality evaluation method based on flash vision |
| CN113977061B (en) * | 2021-12-03 | 2023-01-31 | 中国航发燃气轮机有限公司 | Method for guaranteeing electron beam welding coaxiality of large-diameter drum barrel of gas turbine |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |