CN103753099A - Device for heat shaping of thin-walled titanium alloy parts - Google Patents
Device for heat shaping of thin-walled titanium alloy parts Download PDFInfo
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- CN103753099A CN103753099A CN201410003626.8A CN201410003626A CN103753099A CN 103753099 A CN103753099 A CN 103753099A CN 201410003626 A CN201410003626 A CN 201410003626A CN 103753099 A CN103753099 A CN 103753099A
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Abstract
The invention relates to a device for heat shaping of thin-walled titanium alloy parts. A first pressing mechanism is fixed at one end of a body, and a second pressing mechanism is fixed at the other end of the body. Two clamping mechanisms are mounted in the middle of the body. Two clamping plates of a lateral ejection mechanism are fixed on two lateral surfaces of the body respectively and located between the first pressing mechanism and the clamping mechanisms. A width inner-supporting mechanism is located between the two clamping plates of the lateral ejection mechanism, one end of the width inner-supporting mechanism is mounted in a to-be-shaped part, and cavity inner-supporting mechanisms are mounted on the upper surface and the lower surface of the width inner-supporting mechanism. One ends of the cavity inner-supporting mechanisms are mounted in the clamping mechanisms, so that a support body with a wedge-shaped inner cavity is formed in the to-be-shaped part. By the device, utilization rate of a heat treatment furnace is increased, and cost of vacuum heat shaping is lowered. Since the to-be-shaped parts are clamped symmetrically, main stresses of a tooling are symmetric in direction and offset each other, stress state of the tooling is improved, and deformation resistance of the tooling is enhanced indirectly.
Description
Technical field
The present invention relates to field of machining, specifically utilize this device under hot state to the thin-wall titanium alloy part processing that corrects shape, formalizes after distortion.
Background technology
Thin-wall titanium alloy part is a kind of vitals of engine, for engine provides required air mass flow.At present, both at home and abroad this thin-wall titanium alloy part of development is generally divided into casting, panel beating welding fabrication, casting and panel beating to weld the moulding that combines etc. several.This part is complex thin-wall structure, length > 1000mm, sectional dimension is about 120mm * 100mm, wall thickness≤2mm, a lot of machined surface profile degree of textural existence, surface roughness, form and position tolerance, profile that size tolerance requirements is very high, cavity, location and installation datum level etc.This part material is unmanageable titanium alloy, and this material has high affinity for oxygen, and under hot conditions, this tendency that is melting into oxygen, hydrogen of titanium alloy will cause it to produce serious embrittlement; In welding process, be prone to bubble, slag inclusion, defects i.e.cracks; In pressure processing process, have very serious rebound phenomenon, cause the theoretical profile of processed profile substantial deviation, these characteristics bring very large difficulty to shaping and processing.According to current processing technology, adopt any processing scheme, the distortion of this thin-wall titanium alloy part is all inevitable.The distortion of this thin-wall titanium alloy part will reduce its serviceability greatly, and especially the distortion of part entrance position, air-flow compression profile and integrated straight dimension will have a strong impact on its aeroperformance, be out of shape when serious and can directly cause part failure, and engine is scrapped.It is unreasonable that existing all schools shape technology all exists corrector to design and produce, school shape effect is not thorough, the part profile that school shape is complete still cannot reach the problem that design objective requires, object of the present invention is exactly the technical disadvantages for above-mentioned thin-wall titanium alloy part deformation elimination aspect, a kind of correction, shaping device are provided, can realize the debugging functions to the distortion of thin-wall titanium alloy part key position, make the distortion of this each key position of part meet design instructions for use.
Summary of the invention
For overcoming thin-wall titanium alloy parts of Casting, machine, add, the distortion in the process such as welding, heat treatment, cause this part serviceability substantial deviation designing requirement, the present invention proposes a kind of device for the hot school of thin-wall titanium alloy part shape.
The present invention includes in main body, the first hold-down mechanism, Ce Ding mechanism, the second hold-down mechanism, width support mechanism in support mechanism, die cavity, locating piece, cant board, 2 clamping mechanisms and positioning and clamping mechanism.Wherein: the first hold-down mechanism is fixed on main body one end, the second hold-down mechanism is fixed on the main body other end.2 clamping mechanisms are arranged on the middle part of main body.Two clamping plate in Ce Ding mechanism are separately fixed at the both side surface of main body, and between described the first hold-down mechanism and clamping mechanism; Between two clamping plate of the interior support mechanism Ce Ding of width mechanism, and in this width, one end of support mechanism packs into by the shape workpiece of school, in die cavity, support mechanism is arranged on upper surface and the lower surface of support mechanism in described width, and one end of support mechanism packs in clamping mechanism in this die cavity, thereby in by school shape workpiece, formed the supporter that inner chamber is wedge shape.By in the packaged wedge shape inner chamber that enters described supporter of the compaction plug in support mechanism in width, and it is contrary with the bevel direction of wedge shape inner chamber to make to compress the direction on chock inclined-plane.Described the first hold-down mechanism comprises two block pressur plates and for the housing screw of each pressing plate.Two block pressur plates are arranged on respectively upper surface and the lower surface of main body by housing screw.Two block pressur plates of the second hold-down mechanism are separately fixed at upper surface and the lower surface of main body.Card orchid in the second hold-down mechanism is installed on the side plate of described two block pressur plates.
The cross section of the pressing plate in described the first hold-down mechanism is all L-shaped, and the minor face forming in " L " shape pressing plate is gripper shoe, and the height of this gripper shoe is greater than by the thickness of school shape workpiece.The long limit forming in " L " shape pressing plate is pressure strip, has the via hole of housing screw on this pressure strip, and this via hole is concentric with the first hold-down mechanism installing hole of main body one end.
Described the second hold-down mechanism comprises two block pressur plates, blue for housing screw and 4 cards of each pressing plate.The cross section of described pressing plate is all L-shaped, and the long limit forming in " L " shape pressing plate is gripper shoe, and the height of this gripper shoe is greater than by the thickness of school shape workpiece; There is respectively steam vent at geometric center place in described each gripper shoe.The minor face forming in " L " shape pressing plate is pressure strip, is evenly equipped with three screwed holes that housing screws are installed on this pressure strip, by described housing screw by Work-sheet pressing upper surface and the lower surface in main body.Describedly respectively block orchid and be " U " shape, at a blue side of each card, have the installing hole of housing screw.
The upper surface at described main body two ends and the reduced thickness of lower surface, formed cascaded surface.In described main body, for being installed, upper surface and the lower surface of first hold-down mechanism one end have respectively outstanding this surperficial locating piece, the position of this locating piece is determined according to the structure of workpiece, make this locating piece be positioned at the end, workpiece one end after installation, and by the lateral displacement of this locating piece restriction workpiece.In one end of described main body, there is the first hold-down mechanism installing hole; The other end in described main body has lifting through hole.
In described width, support mechanism comprises two back-up blocks and a compression chock.A surface of described two back-up blocks is the inclined-plane of 3～5 degree, and four surfaces of described compression chock are the inclined-plane of 3～5 degree.In described die cavity, support mechanism comprises profile back-up block and lower profile back-up block.The upper surface of described upper profile back-up block is cambered surface, and the curvature of this cambered surface is with identical by the interior shape face of school shape workpiece; One end of upper profile back-up block upper surface is recessed ladder, to facilitate the dismounting of workpiece.The lower surface of described upper profile back-up block is the inclined-plane of 3～5 degree.The upper surface of lower profile back-up block is the inclined-plane of 3～5 degree.The lower surface of lower profile back-up block is cascaded surface, and the ladder that is positioned at this lower profile back-up block one end fills concave surface and coordinated by school shape workpiece.
The present invention utilizes hot mastication and the stress relaxation effect of titanium alloy material, makes to be converted into plastic deformation by the strain under school shape part part room temperature condition, thereby reaches the object of correcting part deformation.Hot school shape frock material is manufactured with stainless steel 1Cr18Ni9Ti material, has stable non-oxidizability, good stability and excellent thermal shock resistance under this stainless steel material high temperature.
When the present invention has considered by the hot school of shape part, school shape in frock location and the setting of frock clamping mechanism, installation way, frock with inconsistent and cause compensation problem to stress and strain, tool structure form, modes of emplacement with the lifting transhipment of the mating of heat-treatment furnace size, frock, frock in heat-treatment furnace and be convenient to process and the factor such as maintenance by school shape part material linear expansion coefficient.
The Major Difficulties that this type of thin-wall titanium alloy part is carried out to hot corrector design is: by the material of school shape part, be 1. titanium alloy, oxidizable, resilience is difficult for greatly occurring plastic deformation, school shape difficulty.2. complicated by school shape part deformation situation, the direction of distortion, irregular the following of size.3. by school shape part, be thin-wall part, in the shape process of school, must consider by the deformation relationship of shape position, school and region of interest, during corrector design, pressure, top, Cheng Deng mechanism must be comprehensively set.4. by school shape part, must be carried out vacuum hot sizing, in corrector when design, will be considered anti-oxidant, the high-temperature resistance, non-deformability, device materials of the material of device and by inconsistent produce deformation-compensated of school shape material and the factors such as pollution level to Equipment for Heating Processing.Therefore, the innovative point of this hot corrector design is, first, this hot corrector has been used heat-resisting 1Cr18Ni9Ti stainless steel material, and this material has: at high temperature will have enough non-deformabilities; There is higher phase transition temperature; There is good thermal shock resistance; Under high temperature, non-oxidizability is strong, can titanium alloy workpiece not produced and be polluted; The processing technology having had.Secondly, this hot corrector is for being provided with clamping device by the distortion of school shape part different parts, clamping mechanism by shape position, school is designed to two-way clamping mostly, can realize the effects such as pressure, top, support according to the different deformation of part, and the deformation place of part is adjusted to ideal position.Again, this hot corrector has been designed to symmetrical cage gantry structure, is symmetrical arranged by school shape part location and hold-down mechanism, the ability that makes frock possess clamped one time, proofread and correct two thin-wall titanium alloy parts on positive and negative two faces of frock main body.This kind of layout improved the utilization rate of heat-treatment furnace on the one hand, reduced the cost of vacuum hot sizing, the hot school shape cost of part 50%, simultaneously owing to being symmetrical clamping by school shape part, frock be mainly subject to force direction symmetrical, cancel out each other, the suffered bending force of main body steel plate is zero, improved the stress of frock, indirectly improved the non-deformability of frock, to the use of frock, safeguard also favourable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention, and wherein, Fig. 1 a is front view, and Fig. 1 b is left view.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the top view of main body mechanism schematic diagram.
Fig. 4 is the cutaway view of main body mechanism schematic diagram.
Fig. 5 is the structural representation of the first hold-down mechanism.
The structural representation of Tu6Shi Ceding mechanism.
Fig. 7 is the structural representation of the second hold-down mechanism card orchid.
Fig. 8 is the structural representation of support mechanism in width.
Wherein
1. main body; 2. the first hold-down mechanism; 3.Ce Ding mechanism; 4. the second hold-down mechanism; 5. support mechanism in width; 6. support mechanism in die cavity; 7. hold-down mechanism installing hole; 8. locating piece; 9. cant board; 10. clamping mechanism; 11. positioning and clamping mechanisms; 12. holes for hoist.11. cards are blue
The specific embodiment
Embodiment mono-
The present embodiment is a kind of device for the hot school of thin-wall titanium alloy part shape, comprises support mechanism 5 in main body 1, the first hold-down mechanism 2, Ce Ding mechanism 3, the second hold-down mechanism 4, width, the interior support mechanism 6 of die cavity, locating piece 8,9,2 clamping mechanism 10He positioning and clamping mechanisms 11 of cant board.
Described main body 1 is carrier of the present invention.The first hold-down mechanism 2 is fixed on main body 1 one end, and the second hold-down mechanism 4 is fixed on main body 1 other end.2 clamping mechanisms 10 are arranged on the middle part of main body 1, and the spacing between described 2 clamping mechanism 10 adjacent external surfaces is determined according to the clamping position of institute's clamping workpiece.Two clamping plate in Ce Ding mechanism 3 are separately fixed at the both side surface of main body 1, and between described the first hold-down mechanism 2 and clamping mechanism 10; Screw in described Ce Ding mechanism 3 is respectively through each clamping plate, by workpiece pre-tightening in main body 1.Between two clamping plate of the interior support mechanism of width 5 Ce Ding mechanisms 3, and in this width, one end of support mechanism 5 packs into by the shape workpiece of school.In die cavity, support mechanism 6 is arranged on upper surface and the lower surface of support mechanism 5 in described width, and in this die cavity, one end of support mechanism 6 packs in clamping mechanism 10.
Two block pressur plates of described the first hold-down mechanism 2 are arranged on respectively upper surface and the lower surface of main body 1 by housing screw, by described two block pressur plates by Work-sheet pressing upper surface and the lower surface in main body 1.
Two block pressur plates of the second hold-down mechanism 4 are separately fixed at upper surface and the lower surface of main body 1.The housing screw of the second hold-down mechanism 4 passes respectively the panel of each pressing plate, upper surface and lower surface by Work-sheet pressing in main body 1.Card orchid in the second hold-down mechanism 4 is installed on the side plate of described two block pressur plates, for by Work-sheet pressing, the outer surface of this workpiece is adjacent to respectively with the surface of main body and the second compressing structure.
Described main body 1 is dull and stereotyped.The reduced thickness of this main body 1 two ends upper surface and lower surface, has formed cascaded surface.Described main body 1 thickness at attenuate place and the length of attenuate, all according to the structure of workpiece and deflection, adopt conventional method to determine.In described main body 1, for being installed, upper surface and the lower surface of first hold-down mechanism 2 one end have respectively outstanding this surperficial locating piece 8, the position of this locating piece is determined according to the structure of workpiece, make this locating piece be positioned at the end, workpiece one end after installation, and by the lateral displacement of this locating piece restriction workpiece.In one end of described main body 1, there is the first hold-down mechanism installing hole 7; The other end in described main body 1 has lifting through hole.
Described the first hold-down mechanism 2 comprises two block pressur plates and for the housing screw of each pressing plate.The cross section of described pressing plate is all L-shaped, and the minor face forming in " L " shape pressing plate is gripper shoe, and the height of this gripper shoe is greater than by the thickness of school shape workpiece, to facilitate the installation of workpiece.The long limit forming in " L " shape pressing plate is pressure strip, has the via hole of housing screw on this pressure strip, and this via hole is concentric with the first hold-down mechanism installing hole of main body 1 one end.
Described the second hold-down mechanism 4 comprises two block pressur plates, for the housing screw of each pressing plate and 4 cards blue 11.The cross section of stating pressing plate is all L-shaped, and the long limit forming in " L " shape pressing plate is gripper shoe, and the height of this gripper shoe is greater than by the thickness of school shape workpiece, to facilitate the installation of workpiece; There is respectively steam vent at geometric center place in described each gripper shoe.The minor face forming in " L " shape pressing plate is pressure strip, is evenly equipped with three screwed holes that housing screws are installed on this pressure strip, by described housing screw by Work-sheet pressing upper surface and the lower surface in main body 1.Describedly respectively block orchid and be " U " shape, at a blue side of each card, have the installing hole of housing screw, during use, 4 blue openings of card are installed on respectively in the gripper shoe of two block pressur plates in the second hold-down mechanism 4, and compress by housing screw, workpiece and described gripper shoe are adjacent to.
Described clamping mechanism 10 is by two panels and four rectangular frame structure that pole forms.Size in described clamping mechanism framework is slightly larger than the appearance and size of workpiece.The installing hole that has respectively a plurality of housing screws on the top panel of described clamping mechanism and lower panel, is adjacent to the surface of workpiece and the upper surface of main body and lower surface by housing screw.By clamping mechanism 10 during by Work-sheet pressing, at housing screw and workpiece, pressed between surface and laid backing plate, for the protection of surface of the work, and make workpiece stressed evenly.
Described Ce Ding mechanism 3 is comprised of two cant boards 9 and a plurality of housing screw.On described cant board 9, have the installing hole of row's housing screw, and the line between each housing screw installing hole is parallel to the surface of main body.In described each housing screw installing hole, the center of outermost housing screw installing hole is concordant with the top of workpiece.In the present embodiment, on every cant board, there are three housing screws.
In described width, support mechanism 5 comprises two back-up blocks and a compression chock.A surface of described two back-up blocks is the inclined-plane of 3～5 degree, and four surfaces of described compression chock are the inclined-plane of 3～5 degree.In described die cavity, support mechanism 6 comprises profile back-up block and lower profile back-up block.The upper surface of described upper profile back-up block is cambered surface, and the curvature of this cambered surface is with identical by the interior shape face of school shape workpiece; One end of upper profile back-up block upper surface is recessed ladder, to facilitate the dismounting of workpiece.The lower surface of described upper profile back-up block is the inclined-plane of 3～5 degree.The upper surface of lower profile back-up block is the inclined-plane of 3～5 degree.The lower surface of lower profile back-up block is cascaded surface, and the ladder that is positioned at this lower profile back-up block one end fills concave surface and coordinated by school shape workpiece.
During use, the lower profile back-up block in support mechanism 6 in described die cavity is packed into by the lower surface of school shape workpiece lumen; 5 two back-up blocks of support mechanism in described width are respectively charged into by the both side surface of school shape workpiece lumen, and make two back-up blocks in support mechanism in described width be placed in respectively the upper surface of the lower profile back-up block in support mechanism in described die cavity; Upper profile back-up block in support mechanism in described die cavity is packed into by school shape workpiece lumen upper surface, and profile back-up block on this is placed on two back-up blocks in the interior support mechanism of width.Two back-up blocks in width after laying in support mechanism are identical with the direction on each inclined-plane of lower profile back-up block with the upper profile back-up block in support mechanism in described die cavity, thereby in by school shape workpiece, have formed the supporter that inner chamber is wedge shape.By in the packaged wedge shape inner chamber that enters described supporter of the compaction plug in support mechanism in width 5, and it is contrary with the bevel direction of wedge shape inner chamber to make to compress the direction on chock inclined-plane.Insertion depth by compressing chock to be to regulate described supporter inner cavity size, thereby realizes by the support of school shape workpiece lumen width and height.
Described in the present embodiment for the device of the hot school of thin-wall titanium alloy part shape:
Main body 1.This part is the about 1500mm of a block length, wide 225mm, thickness is the 1Cr18Ni9Ti corrosion resistant plate of 30mm, two large planes up and down of steel plate are step, middle part is high, and two-end part is low, and the height of step is 3mm, the Position Design of leading portion step with by the corresponding position of school shape part front end longitudinal seam, back segment step design is by the position of school shape part turnaround section girth joint.In main body 1 standardized by school shape Central of the parts line, this center line does not overlap with the center line of main body 1 width, at a distance of 17mm.At main body 1 front end, two M16 hold-down mechanism installing holes 7 apart from termination 80mm, 105mm place, have been processed on by school shape Central of the parts line, for the first hold-down mechanism 2 is installed.In main body 1, in large plane, apart from front end 105mm place, two long 200mm have respectively been processed up and down, wide 10mm, the locating piece 8 of high 5mm, two locating pieces on same are with symmetrical by school shape Central of the parts line, distance between locating piece is by the width of school shape part, be about 100mm, in order to fix by school shape part front end the position in main body plane.In main body 1 apart from body front end face 168mm place, a wide 145mm has been designed respectively in two sides of body width direction, long 200mm, the cant board 9 of thick 30mm, cant board is symmetrical along body width center line, on every cant board apart from the large surperficial 40mm of main body place uniform processing along its length 3 M12 tapped through holes, for installation side top mechanism 3.In main body 1 apart from front end 420mm be in main body plane symmetry up and down respectively processed two long 175.5mm, wide 275mm, the clamping mechanism 10 of high 165mm, between two clamping mechanisms, distance is 66.5mm, each clamping mechanism is comprised of column and a horizontal cover plate of 4 25mm * 25mm, cover plate is of a size of 175.5mm * 275mm, thickness is 25mm, on the top of four columns, respectively processed the screw of a M16, screw hole depth is greater than 50mm, between cover plate and column, adopt four M16 bolts to be connected, five M16 tapped through holes in the centre position of every cover plate, have been processed, wherein four screws arrangement of being rectangle, this rectangular length of side is 116mm * 54mm, another one screw is positioned at this rectangular center, 5 screws are used for installing top housing screw herein, housing screw is M16 * 85.In main body 1 apart from front end 912mm place, near main body 1 one sides in the plane symmetry up and down of main body steel plate, respectively processed a long 186.4mm, wide 105mm, high 139mm, thickness is the positioning and clamping mechanism 11 of 25mm, the inside stand identity distance body front end locating piece distance between center line of riser is 53.5mm, this riser is inverted "L" shaped, on the center line of riser width, apart from 50mm place, bottom section body surface, processed the steam vent of a φ 30mm, in the upper plane of riser uniform processing 3 M12 tapped through holes, and the position corresponding with screw processed three slots to make way on riser, the groove width of stepping down 20mm, long 30mm, dark 5mm, slot to make way is in order to dodge the M12 screw of installing on riser.In main body 1, apart from rear end face 30mm place, 12, two holes for hoist of hole for hoist of having processed two φ 20 are symmetrical along the large plane centreline of main body, and the distance between two holes is 100mm.
The first hold-down mechanism 2.Hold down gag is comprised of two inverted "L" shaped pressing plates and two M16 bolts.Pressing plate is about 180mm, wide about 80mm, thickness is 20mm, in the large plane of pressing plate, near a side of 180mm, processed a boss, boss height is 10mm, width 10mm, length is identical with the width of pressing plate, for 80mm, on the center line of two block pressur plate widths, respectively designed respectively the through hole of a φ 18, the through hole centre-to-centre spacing of the two block pressur plates separately distance of boss inner side edge is 50mm, 70mm.The M16 bolt length of clamping platen is 65mm.When front end hold down gag uses, be arranged on the M16 screwed hole place that main body 1 front end is corresponding, after tighting a bolt, two block pressur plates are subject to respectively the active force of boss and two bolts, thereby form leverage realization, compress by the object of school shape part up and down simultaneously.For will being down pressed on step surface by school shape part front end.
Ce Ding mechanism 3.Ce Ding mechanism is positioned at the both sides of main body 1 width, both on the cant board 8 of main body 1, correspondence was installed the screw of 6 M12 * 90, cant board 8 forms Ce Ding mechanism jointly with screw, during the shape of school, by adjusting the length of side screw, reaches and regulates by the object of school shape part width.
The second hold-down mechanism 4.Each second hold-down mechanism of main body both sides Shang Xia 1 is comprised of 3 M12 * 50 screws and two card orchids, M12 screw is arranged on the upper surface screw place of main body 1 rear end inverted "L" shaped riser, during school shape by adjusting the elongation of diverse location screw, to adjust by the linearity of school shape part turnaround section flange side direction.The blue screw by " U " shape clamp and a M16 * 85mm of each card forms, the long 130mm of clamp, wide 75mm, thick 30mm, during use, by being clipped in by card part in the middle of clamp by tightening screw, realize being pressed on by the turnaround section end face of flange of school shape part on the side elevation of inverted "L" shaped vertical plate type positioning and clamping mechanism of main body, play and proofread and correct by the effect of school shape part adpting flange plane.
Support mechanism 6 in die cavity.In die cavity, support mechanism is comprised of five parts, is respectively: upper profile back-up block, lower profile back-up block and three middle compression chocks.Upper profile back-up block, lower profile back-up block are respectively according to being designed by the upper profile of school shape part, lower profile, middle three compress chock and are designed to respectively wedge shape, by regulating the insertion depth of center chock, can realize the adjustment of the upper and lower and width size of support mechanism in die cavity, thereby realize by the adjusting of cavity dimension in the shape part of school, also be to by the supplemental support of school shape inner cavity of component, avoid causing by the problem of school shape inner cavity of component distortion because stepping up the clamping of mechanism simultaneously.
The specific implementation process that the present embodiment corrects shape two cover thin-wall titanium alloy parts is:
To the thin-wall titanium alloy part that has occurred after welding to be out of shape, use this corrector to carry out hot school shape, the front distortion being occurred by school shape part of school shape mainly contains: the large plane of part bottom is because welding generation warpage, inlet portion shrink, profile is out of shape, turnaround section flange is out of shape and flexural deformation with respect to being twisted by school shape part main body.
The first step: first, by the front end by midget plant inserts in the cage framework of main body 1 by school shape part, adjust by school shape part front and back position, make two of front and back girth joint be positioned at the step place of main body 1 large plane.
Second step: from inner chamber supporting mechanism 6 being installed by the porch of school shape part, during installation, first install profile back-up block, lower profile back-up block, make the profile of upper and lower two back-up blocks and fitted completely by the profile up and down of school shape part, by three of centre, compressing chock is again inserted between upper and lower profile back-up block, according to compressed the axial insertion depth of chock by school shape part die cavity deformation adjustment, guarantee cavity shape and size.
The 3rd step: support mechanism 5 in width is being installed by school shape part inlet portion, during installation existing by the upright support piece of both sides with by the corresponding sidewall in shape part entrance position, school, fitted, again intermediate wedge is compressed to chock and insert the wedge gap place between two upright support pieces, adjust the insertion depth that wedge shape compresses chock, guarantee by by the side wall support of school shape part inlet portion to the width that meets design and processes and require.
The 4th step: 10 housing screws on main body clamping mechanism 10 are installed, first will by the second half section of school shape part base plane, be pressed on the interlude of step plane of main body 1, thrust can not be excessive, can fix to be made it to move by school shape part, be limited, follow-up after other mechanisms are in place the unified screw of tightening again.
The 5th step: the first hold-down mechanism 2 is installed, to be pressed on the first half step surface of main body by the base plane at shape part entrance position, school, when compressing front end hold down gag, tighten the side screw of Ce Ding mechanism 3, entrance position lateral wall by school shape part is adjusted to consistent with main body 1 front end locating piece 8, after being adjusted by school shape part front end lateral position, compress again the first hold-down mechanism 2, make to be pressed on the front transverse plane of main body 1 by shape part entrance position, school, be pressed between two locating pieces 8 simultaneously.
The 6th step: use the card of rear end hold down gag 4 blue, to be pressed on the vertical surface of main body 1 rear end " L " shape riser by the large plane of school shape part adpting flange, the bending and torsion of adjusting adpting flange by blocking blue thrust is out of shape, adjust the screw in " L " shape riser upper water plane, to being corrected shape by the flexural deformation of school shape part adpting flange simultaneously.
The 7th: complete after above each step installation, the thrust of the hold down gag at each position is suitably being adjusted, after assurance is completely eliminated by the distortion of school shape part, install main body 1 in addition one side by school shape part, two by school shape part, installed after, band frock enters vacuum heat treatment furnace, then carries out hot school shape.
Hot school shape is forward and backward measures deformation of products degree respectively, the results are shown in Table 1.Measurement result shows to use the flatness of the forward and backward product of this corrector school shape to be significantly improved, and the expansion phenomenon of entrance position position while welding is eliminated substantially.The size at thin-wall titanium alloy part base plane degree, inlet portion bit width and other position is given, form and position tolerance has all reached designing requirement.
Flatness contrast (mm of unit) before and after the shape of the hot school of table 1 thin-wall titanium alloy part
Claims (5)
1. the device for the hot school of thin-wall titanium alloy part shape, it is characterized in that, comprise in main body, the first hold-down mechanism, Ce Ding mechanism, the second hold-down mechanism, width support mechanism in support mechanism, die cavity, locating piece, cant board, 2 clamping mechanisms and positioning and clamping mechanism; Wherein: the first hold-down mechanism is fixed on main body one end, the second hold-down mechanism is fixed on the main body other end; 2 clamping mechanisms are arranged on the middle part of main body; Two clamping plate in Ce Ding mechanism are separately fixed at the both side surface of main body, and between described the first hold-down mechanism and clamping mechanism; Between two clamping plate of the interior support mechanism Ce Ding of width mechanism, and in this width, one end of support mechanism packs into by the shape workpiece of school, in die cavity, support mechanism is arranged on upper surface and the lower surface of support mechanism in described width, and one end of support mechanism packs in clamping mechanism in this die cavity, thereby in by school shape workpiece, formed the supporter that inner chamber is wedge shape; By in the packaged wedge shape inner chamber that enters described supporter of the compaction plug in support mechanism in width, and it is contrary with the bevel direction of wedge shape inner chamber to make to compress the direction on chock inclined-plane; Described the first hold-down mechanism comprises two block pressur plates and for the housing screw of each pressing plate; Two block pressur plates are arranged on respectively upper surface and the lower surface of main body by housing screw; Two block pressur plates of the second hold-down mechanism are separately fixed at upper surface and the lower surface of main body; Card orchid in the second hold-down mechanism is installed on the side plate of described two block pressur plates.
2. as claimed in claim 1 for the device of the hot school of thin-wall titanium alloy part shape, it is characterized in that, the cross section of the pressing plate in described the first hold-down mechanism is all L-shaped, and the minor face forming in " L " shape pressing plate is gripper shoe, and the height of this gripper shoe is greater than by the thickness of school shape workpiece; The long limit forming in " L " shape pressing plate is pressure strip, has the via hole of housing screw on this pressure strip, and this via hole is concentric with the first hold-down mechanism installing hole of main body one end.
3. as claimed in claim 1 for the device of the hot school of thin-wall titanium alloy part shape, it is characterized in that, described the second hold-down mechanism comprises two block pressur plates, blue for housing screw and 4 cards of each pressing plate; The cross section of described pressing plate is all L-shaped, and the long limit forming in " L " shape pressing plate is gripper shoe, and the height of this gripper shoe is greater than by the thickness of school shape workpiece; There is respectively steam vent at geometric center place in described each gripper shoe; The minor face forming in " L " shape pressing plate is pressure strip, is evenly equipped with three screwed holes that housing screws are installed on this pressure strip, by described housing screw by Work-sheet pressing upper surface and the lower surface in main body; Describedly respectively block orchid and be " U " shape, at a blue side of each card, have the installing hole of housing screw.
4. as claimed in claim 1 for the device of the hot school of thin-wall titanium alloy part shape, it is characterized in that, the upper surface at described main body two ends and the reduced thickness of lower surface, formed cascaded surface; In described main body, for being installed, upper surface and the lower surface of first hold-down mechanism one end have respectively outstanding this surperficial locating piece, the position of this locating piece is determined according to the structure of workpiece, make this locating piece be positioned at the end, workpiece one end after installation, and by the lateral displacement of this locating piece restriction workpiece; In one end of described main body, there is the first hold-down mechanism installing hole; The other end in described main body has lifting through hole.
5. as claimed in claim 1 for the device of the hot school of thin-wall titanium alloy part shape, it is characterized in that, in described width, support mechanism comprises two back-up blocks and a compression chock; A surface of described two back-up blocks is the inclined-plane of 3～5 degree, and four surfaces of described compression chock are the inclined-plane of 3～5 degree; In described die cavity, support mechanism comprises profile back-up block and lower profile back-up block; The upper surface of described upper profile back-up block is cambered surface, and the curvature of this cambered surface is with identical by the interior shape face of school shape workpiece; One end of upper profile back-up block upper surface is recessed ladder, to facilitate the dismounting of workpiece; The lower surface of described upper profile back-up block is the inclined-plane of 3～5 degree; The upper surface of lower profile back-up block is the inclined-plane of 3～5 degree; The lower surface of lower profile back-up block is cascaded surface, and the ladder that is positioned at this lower profile back-up block one end fills concave surface and coordinated by school shape workpiece.
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| CN109500145A (en) * | 2018-11-08 | 2019-03-22 | 北京星航机电装备有限公司 | A kind of titanium alloy thin wall aerofoil class part hot sizing method |
| CN111069861A (en) * | 2019-12-31 | 2020-04-28 | 湖北三江航天红阳机电有限公司 | Method for processing U-like thin and long thin-wall cast titanium alloy structural member |
| CN111069861B (en) * | 2019-12-31 | 2021-05-18 | 湖北三江航天红阳机电有限公司 | Method for processing U-like thin and long thin-wall cast titanium alloy structural member |
| CN111633066A (en) * | 2020-06-04 | 2020-09-08 | 金川集团股份有限公司 | Correcting and resetting device |
| CN112646967A (en) * | 2020-12-14 | 2021-04-13 | 北京航星机器制造有限公司 | Auxiliary supporting device and heat treatment method of aluminum alloy member |
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