CN205414680U - A auxiliary fixtures for repairing thin wall loop forming element - Google Patents
A auxiliary fixtures for repairing thin wall loop forming element Download PDFInfo
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- CN205414680U CN205414680U CN201521048705.7U CN201521048705U CN205414680U CN 205414680 U CN205414680 U CN 205414680U CN 201521048705 U CN201521048705 U CN 201521048705U CN 205414680 U CN205414680 U CN 205414680U
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- forming element
- loop forming
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Abstract
The utility model discloses an auxiliary fixtures for repairing thin wall loop forming element. Utilize the utility model discloses can overcome argon arc welding heat the input too high deformation that leads to, undercut and sink defect and manual operation precision low not enough, show improvement thin wall loop forming element qualification rate. The utility model discloses a following technical scheme realizes: to wait to restore thin wall loop forming element clamping on three grab chuck (2), will wait to restore the thin wall loop forming element again and place in the circular arc opened cylinder hole of thin wall loop forming element auxiliary device adjustable atmosphere safety cover (7), then fix plasma nozzle (3) on thin wall loop forming element auxiliary device circular arc opening through plane safety cover (5), and adopt thread feeding mechanism (4) to aim at through the plane safety cover and wait to restore thin wall loop forming element surface, wait to restore the thin wall loop forming element and be at the uniform velocity rotary motion in welding process, linear motion is to the plasma nozzle, waits to restore the thin wall loop forming element and do at the uniform velocity rotary motion formation spiral welding seam under rotary mechanism (1) drives.
Description
Technical field
This utility model relates to a kind of auxiliary mould for repairing thin-wall annular part, especially for the prosthetic device of aircraft engine maintenance field circular thin-wall class parts depreciation.
Technical background
Thin-wall annular part refers to the ring-shaped work pieces that the wall thickness of annular element and its radial dimension differ greatly.It is generally acknowledged that the annular element wall thickness ratio with the internal diameter bilge radius ring less than 1:20 is referred to as thin-wall annular part.Aero-engine circular thin-wall class part plays the very important effects such as joint connection, Stress Transfer in engine operation process.Such part under arms during often there is relative motion because of vibration or alternate stress effect with surrounding components touching, additionally annular thin wall part radial rigidity is very poor easily causes outer wall abrasion to cause part rejection.Having the features such as wall thickness change complexity, poor rigidity due to these parts, be easily deformed during Repair gene, the precision of processing part can not be guaranteed, and majority must be remedied by manual synchronizing, and production efficiency is low, and quality hardly results in guarantee.At present, such part mainly uses manual argon arc welding to repair abrading section.But most of thin-wall annular part abrasion size is less has annular wear characteristic concurrently simultaneously, traditional-handwork argon arc welding is repaired and be there are some unavoidable drawbacks.Arise that when the stress that argon arc welding is formed exceedes the yield strength of material plastic deformation, main Quality show as deforming (formation ellipticity), and surface quality is poor；Operation difficulty degree is big, and fault part wall thickness is generally below 2mm, careless slightly during welding will be burnt by part, and girth joint is difficult to once complete, and the defect such as crackle, pore easily occurs in postwelding；Thermal weld stress controls difficulty, and postwelding easily produces undercut, the weld defect such as subside；The welding operation time is long, and production efficiency is low, repairs a part it is generally required to 60～90min, and quality of weld joint stability is the highest.
Aviation thin-wall annular part majority uses titanium alloy to be fabricated by, and is very easy to oxidative phenomena, has a strong impact on quality of weld joint when argon arc welding is repaired.Compared to manual argon arc welding technology, MICROBEAM PLASMA WELDING technology is the precision welding technology of a kind of advanced person, form plasma arc by mechanical compress, hot compression or electromagnetic compression and realize welding, there is the advantages such as energy density is high, heat input is low, precision is high, weld heat-affected zone is little, postwelding part is unlikely to deform, it is adaptable to thin-walled material (0.05～3mm) welds.
Thin-wall annular part belongs to electromotor vitals, especially variable cross-section special-shaped thin wall part, and manufacturing process is complicated, cost is high, and Service Environment badly belongs to easy waste product.Use specific aim special warfare method and supporting thin-wall annular part auxiliary device to realize annular abrasion and repair the effective way being to reduce part rejection.The most also it is to reduce weld defect, raising conforming product rate, the effective measures of reduction labourer's intensity.
Utility model content
The weak point that this utility model exists for existing manual argon arc welding technology, thering is provided a kind of rehabilitation cost low, efficiency is high, it is possible to reduce labor intensity, improve and repair working (machining) efficiency and control accuracy, and can effectively reduce thin-wall annular part repair scrappage auxiliary device.To solve prior art argon arc welding heat too high deformation, undercut and the collapse defect caused of input.
This utility model solves technical problem and be employed technical scheme comprise that, a kind of auxiliary mould for repairing thin-wall annular part, including plasma nozzle 3, wire feeder 4, plane protective cover 5 and adjustable atmosphere protection cover 7, it is characterized in that: adjustable atmosphere protection cover 7 is made up of by connecting shaft 10 is connected two symmetrical U-shaped clinohedrals 9, connecting shaft 10 is positioned at the top of the inverted V-shaped open slot that two symmetrical U-shaped clinohedral 9 medial slope are formed, the pore of connection air chamber passage 11 is distributed on the inner arc face on V-arrangement open slot top, two inner arc faces define thin-wall annular part 6 to be repaired and are grabbed the circular arc opening bore passed through after chuck 2 clamps by three, two symmetrical U-shaped clinohedral 9 medial plane are communicated with the air inlet pipe 13 of left and right breather chamber passage 11.
This utility model has the advantages that compared to prior art.
Rehabilitation cost is low, and efficiency is high.This utility model utilizes the relative motion principle of thin-wall annular part to be repaired and wire feeder 4, by adjusting plasma nozzle and workpiece relative motion state, completes the thin-wall annular part reparation worn and torn in various degree.Moved along thin-wall annular part axis direction to be repaired by plasma nozzle 3, thin-wall annular part to be repaired is uniform speed rotation and forms spiral weld, complete large area abrasion to repair, utilize the advantage that plasma arc energy density is high, heat input is low, make up argon arc welding heat and input too high deformation, undercut and the collapse defect caused.Effectively reduce thin-wall annular part and repair scrappage.
Reduce manual labor intensity, improve repairing working (machining) efficiency and control accuracy.This utility model drives workpiece at the uniform velocity to rotate by independently rotated mechanism; thin-walled thin-wall annular part to be repaired can form circular weld when being grabbed be uniform speed rotation after chuck 2 clamps under rotating mechanism 1 drives by three; compensate for the deficiency that manual operations precision is low, is substantially reduced operator's labor intensity and working (machining) efficiency.Test data shows, uses the engine scuffing hinge weld interval that this utility model is repaired, can be foreshortened to 3～5min by 60 needed for manual argon arc welding～90min, and qualification rate is promoted to 95% by original 60%.
This utility model is by being placed on repairing thin-wall annular part in the circular arc open slot of adjustable atmosphere protection cover 7 of thin-wall annular part auxiliary device; atmosphere protection device 7 mating protection cover; it is allowed to and welded piece diameter matches by adjusting protection face diameter; atmosphere protection is provided in welding process, prevents weld seam from oxidative phenomena occurring.Ensureing to have welded and connect joint quality and stability by adjustable atmosphere protection device, widened and can repair thin-wall part kind, actual repair result shows that thin-wall workpiece postwelding weld seam is silvery white in color non-oxidation phenomenon.
Accompanying drawing explanation
Fig. 1 is this utility model for repairing the auxiliary mould of the thin-wall annular part principle schematic to thin-wall annular part REPAIR WELDING.
Fig. 2 is Fig. 1 adjustable atmosphere protection cover 7 broken section organigram.
In figure: 1 rotating mechanism, 2 three grab chuck, 3 plasma nozzles, 4 wire feeders, 5 plane protective cover, 6 welded pieces; 7 adjustable atmosphere protection covers, 8 bases, 9 symmetrical U-shaped clinohedrals, 10 connecting shafts, 11 air chamber passages; 12 filter screens, 13 air inlets, 14 adjusting nuts, 15 stretching screws, 16 springs.
Specific embodiment mode
Refering to Fig. 1.In embodiment described below, as a example by double hinge is for actual repair object, abrading section wall thickness is 1.5mm, wear morphology rule, scope is little, therefore repair and only need rotating mechanism 1 sports to circularize weld seam, concrete reparation flow process and frock service condition are as described below: according to this utility model, can thin-wall annular part wear of hinge end clamping to be repaired be grabbed on chuck 2 three, it is placed on repairing thin-wall annular part in the circular arc open slot of adjustable atmosphere protection cover 7 of thin-wall annular part auxiliary device again, then plasma nozzle 3 is fixed on thin-wall annular part auxiliary device circular arc overthe openings by plane protective cover 5；Wire feeder 4 is used to be directed at thin-wall annular part surface to be repaired by plane protective cover 5；In welding process; adjustable atmosphere protection cover 7 provides atmosphere protection; three grab chuck drives thin-wall annular part to be repaired to be uniform speed rotation by rotating mechanism 1; plasma nozzle 3 moves along a straight line along the axis direction of thin-wall annular part to be repaired; molten bath is formed under the effect of the plasma arc that the welding wire sent constantly into wire feeder 4 ejects at plasma nozzle 3; thin-wall annular part to be repaired ultimately forms helical annular weld seam under the motion of rotating mechanism 1 with plasma nozzle 3 superposes, and completes abrasion and repairs.
In welding process, adjusting plasma nozzle 3 and workpiece relative motion state, mobile plasma nozzle 3 is apart from abrading section 4～5mm, and wire feeder 4 is directed at thin-wall annular part surface distance workpiece 3～5mm to be repaired by plane protective cover 5.The circular arc opening degree of two symmetrical U-shaped clinohedrals 9 of turn atmosphere protection device by adjusting nut 14 adjust stretching screw 15 compress or discharge spring 16 drive connecting shaft 10 rotation be adjusted.Circular arc extended distance parts to be welded 2～3mm.Air inlet 13 is passed through 20L/min argon; by plane protective cover 5 is passed through 16L/min argon; the rotary speed running rotating mechanism 1 is set to 0.3 rev/min; the size of current starting plasma arc is 30A; after plasma arc ignites 2s, wire feeder 4 starts wire feed, and wire feed rate is 25mm/min, repairs and continues ventilation protection after terminating; remove atmosphere protection device after 60s, take off part and complete to repair.
Refering to Fig. 1, Fig. 2.Thin-wall annular part includes plasma nozzle 3 for the auxiliary mould repairing thin-wall annular part, wire feeder 4, plane protective cover 5 and adjustable atmosphere protection cover 7, wherein: adjustable atmosphere protection cover 7 is made up of by connecting shaft 10 is connected two symmetrical U-shaped clinohedrals 9, connecting shaft 10 is positioned at the top of the inverted V-shaped open slot that two symmetrical U-shaped clinohedral 9 medial slope are formed, the pore of connection air chamber passage 11 is distributed on the inner arc face on V-arrangement open slot top, two inner arc faces define thin-wall annular part 6 to be repaired and are grabbed the circular arc opening bore passed through after chuck 2 clamps by three, two symmetrical U-shaped clinohedral 9 medial plane are communicated with the air inlet pipe 13 of left and right breather chamber passage 11.It is equipped with filter screen 12 in left and right breather chamber passage 11.Connect by being set with the stretching screw 15 of spring 16 at two symmetrical U-shaped clinohedral 9 inverted V-shaped bases, stretching screw 15 is equipped with the adjusting nut 14 of regulation spring 16.It is fixed on circular arc opening with plasma nozzle 3 and wire feeder 4 plane protective cover 5.Thin-wall annular part auxiliary device circular arc opening rotating mechanism 1 and thin-wall annular part auxiliary device are positioned on the same plane of base 8.
Claims (6)
1. the auxiliary mould being used for repairing thin-wall annular part, including plasma nozzle (3), wire feeder (4), plane protective cover (5) and adjustable atmosphere protection cover (7), it is characterized in that: adjustable atmosphere protection cover (7) is made up of by connecting shaft (10) is connected two symmetrical U-shaped clinohedrals (9), connecting shaft (10) is positioned at the top of the inverted V-shaped open slot that two symmetrical U-shaped clinohedral (9) medial slope are formed, the pore of connection air chamber passage (11) is distributed on the inner arc face on V-arrangement open slot top, two inner arc faces define the circular arc opening bore passed through after thin-wall annular part to be repaired (6) is grabbed chuck (2) clamping by three, two symmetrical U-shaped clinohedral (9) medial plane are communicated with the air inlet pipe (13) of left and right breather chamber passage (11).
2. the auxiliary mould for repairing thin-wall annular part as claimed in claim 1, it is characterised in that: it is equipped with filter screen (12) in left and right breather chamber passage (11).
3. the auxiliary mould for repairing thin-wall annular part as claimed in claim 1, it is characterized in that: connect by being set with the stretching screw (15) of spring (16) at two symmetrical U-shaped clinohedral (9) inverted V-shaped bases, stretching screw (15) is equipped with the adjusting nut (14) of regulation spring (16).
4. as claimed in claim 1 for repairing the auxiliary mould of thin-wall annular part, it is characterised in that: the circular arc opening degree of two symmetrical U-shaped clinohedrals (9) compresses or discharges spring (16) by adjusting nut (14) adjustment stretching screw (15) and drives connecting shaft (10) rotation to be adjusted.
5. the auxiliary mould for repairing thin-wall annular part as claimed in claim 1, it is characterised in that: it is fixed on circular arc opening with plasma nozzle (3) and wire feeder (4) plane protective cover (5).
6. the auxiliary mould for repairing thin-wall annular part as claimed in claim 1, it is characterised in that: thin-wall annular part auxiliary device circular arc opening rotating mechanism (1) and thin-wall annular part auxiliary device are positioned on the same plane of base (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048705.7U CN205414680U (en) | 2015-12-16 | 2015-12-16 | A auxiliary fixtures for repairing thin wall loop forming element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048705.7U CN205414680U (en) | 2015-12-16 | 2015-12-16 | A auxiliary fixtures for repairing thin wall loop forming element |
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| CN205414680U true CN205414680U (en) | 2016-08-03 |
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| CN201521048705.7U Active CN205414680U (en) | 2015-12-16 | 2015-12-16 | A auxiliary fixtures for repairing thin wall loop forming element |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689872A (en) * | 2015-12-16 | 2016-06-22 | 中国人民解放军第五七九工厂 | Repair method for abraded outer surface of thin-walled annular piece and auxiliary device of repair method |
| CN106425622A (en) * | 2016-10-30 | 2017-02-22 | 山西汾西重工有限责任公司 | Machining tool for conical curved-surface cylinder |
| CN113798606A (en) * | 2021-09-28 | 2021-12-17 | 晋西工业集团有限责任公司 | Method for machining internal thread of thin-wall cylindrical part |
-
2015
- 2015-12-16 CN CN201521048705.7U patent/CN205414680U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689872A (en) * | 2015-12-16 | 2016-06-22 | 中国人民解放军第五七九工厂 | Repair method for abraded outer surface of thin-walled annular piece and auxiliary device of repair method |
| CN105689872B (en) * | 2015-12-16 | 2018-04-20 | 中国人民解放军第五七一九工厂 | Thin-wall annular part surface wear restorative procedure and its auxiliary device |
| CN106425622A (en) * | 2016-10-30 | 2017-02-22 | 山西汾西重工有限责任公司 | Machining tool for conical curved-surface cylinder |
| CN113798606A (en) * | 2021-09-28 | 2021-12-17 | 晋西工业集团有限责任公司 | Method for machining internal thread of thin-wall cylindrical part |
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