CN201198012Y

CN201198012Y - Mould for age forming for bending

Info

Publication number: CN201198012Y
Application number: CNU2008200286511U
Authority: CN
Inventors: 甘忠; 熊威; 许旭东
Original assignee: Northwestern Polytechnical University
Current assignee: Northwestern Polytechnical University
Priority date: 2008-03-26
Filing date: 2008-03-26
Publication date: 2009-02-25
Anticipated expiration: 2018-03-26

Abstract

The utility model relates to a mould used for the bending and the age forming, which comprises a base (1), a cover plate (3), a box body (4), mouldboards (6) and a loading device; the loading device is positioned on the upper surface of the base (1); a support plate (8) is positioned at the center of the upper surface of the base (1); the two mouldboards (6) are fixed on the upper surface of the support plate (8); pressure shaft supports (5) are sleeved on the mouldboards (6) and fixedly connected with the support plate (8); and an upper pressure shaft (7) and a lower pressure shaft (10) are respectively arranged on the box body (4) and the pressure shaft supports (5). When external force is transferred to the support plate (8) through a guide screw (9), a guide screw nut (15) converts the rotation of the guide screw to translation along the inner surface of the box body (4), and the mouldboards (6) and the lower pressure shaft (10) move upwards, therefore, the pure bending loading of a testpiece is completed. The utility model is concise in external appearance, simple in structure and convenient in use, uses large fillet transition at the joint of surfaces, and adopts the cover plate to cover the part probably being subjected to the tension fracture of a vacuum bag; in addition, the base is larger than the box body.

Description

A kind of mould that is used for crooked age forming

One, technical field

The present invention relates to panel beating shaping field, is a kind of mould that is used for crooked age forming.

Two, background technology

Age forming (Age Forming) domesticly is referred to as usually that season stress is lax to be shaped, abroad be referred to as creep age forming (Creep Age-forming, CAF).

Typical age forming technology, mainly be to utilize alloy material that the effect of stress relaxation takes place in high temperature, make workpiece produce certain initial deformation, the distortion that keeps workpiece by plus load, in constant temperature, leave standstill a period of time, the stress level of material prolongs in time and reduces, and the part elastic strain is converted into plastic strain, thereby reaches the purpose of shaping.

For the research of age forming bending springback, the most succinct with pure bending research, the present invention has designed the shaping dies that a cover is used to study, and this mould can carry out bending to test specimens such as flat board, T type beams, and is to be pure bending more than the 1000mm in radius of curvature.

Northwestern Polytechnical University is in application number is 200810017544.3 application for a patent for invention, a kind of pure bending age forming die is disclosed, its operation principle comes from four-point bending, with the last item that is installed in the last item hole is following two fulcrums of four-point bending, two briquettings are top two fulcrums of four-point bending, and the relative motion by last lower fulcrum realizes the loading to test specimen.Relative motion between the fulcrum realizes by the leading screw screw drive mechanism.This characteristic feature of an invention is, can realize the pure bending of test specimen is loaded, and shape face retaining part is provided with sliding trough plate and can slides along groove, and then can satisfy the requirement of different in width test specimen.But this is invented to the test specimen age forming time, and mould need wrap up vacuum bag.Because the profile of this mould is complicated, makes the parcel vacuum bag be difficult for, and damage vacuum bag easily.

Three, summary of the invention

Can not realize the pure bending of test specimen is loaded for overcoming existing frock, simplify the complexity of sheet metal bending, the present invention proposes a kind of mould that is used for crooked age forming.

The present invention includes base, cover plate, casing, last item support, template, upper pressure axial, supporting plate, leading screw, following last item, endless screw support, worm gear and worm screw, wherein:

Base 1 is the basis of whole device.Upper surface middle part at base has the boss of width with the interior width, and the thickness sum of its length and two endless screw supports equals the length of interior; Endless screw support all is equipped with in the end at these boss two ends.On place, the upper surface two ends of boss, along its length center line, axis and the perpendicular leading screw of base are installed all; Worm gear is installed in an end of leading screw; Two worm gear baffle plates are enclosed within on two leading screws respectively, the top of worm gear, and are fixed on the base 1 by double threaded screw.Worm screw is installed on the endless screw support by the support cylinder at two ends, cooperatively interacts with worm gear.Feed screw nut is positioned at worm gear baffle plate top, and is fixed on the lower surface of supporting plate.Casing is fixed on the base; Two upper pressure axials are installed on the both sides of the two side wall panels upper end that is positioned at the casing symmetry, and the center line of upper pressure axial is perpendicular to the center line of casing.

The rectangle supporting plate is positioned at the base upper surface center.Supporting plate is three grades of stairsteppings of two ends symmetry: the first order of its bottom constitutes the basis of whole carriage; The second level in the longitudinal direction by two ends to the centre, it reduces highly gradually, and extends to the center of supporting plate, constitutes the V-arrangement face of a wide-angle, is used for template centering location in the longitudinal direction; The third level is the projection that is positioned at two symmetries at two ends.

The lower surface of template is to be " V " shape face, and angle is identical with supporting plate " V " shape face; The upper surface both sides of template are step-like, and the centre is the die face of circular arc; Two template branches are listed in the both sides of supporting plate third level projection, and " V " profile of template lower surface and supporting plate partial " V " profile are cooperated.

The last item support casing of frame plate structure on template, and is fixedlyed connected with supporting plate respectively and clamped template by bolt.Following last item is installed on the last item support.

Among the present invention, when external force through worm screw, worm gear, when leading screw is delivered to supporting plate, by the feed screw nut that is positioned on the supporting plate rotation of leading screw is converted into the translation of supporting plate along interior, the template that promotion is positioned on the supporting plate upward moves with a pair of the pressing down axially that is positioned on the last item support, and the pure bending of finishing testpieces loads.

Will wrap up the needs of vacuum bag when the present invention has taken into full account age forming, a whole set of die shape is succinct, needs to use the test specimen sweep of vacuum bag pressurization unlimited fully, and face and face joining place use big round-corner transition as far as possible during manufacturing; The machinery pressures partially encapsulates with casing, adopts cover plate to cover to the various deep holes that may cause the vacuum bag drawing crack; By filled silicon rubber, iron sand etc. eliminate between the testpieces in the method for indeformable material under the HTHP, gap between testpieces and the Die Box inwall, to reduce destruction to vacuum bag.The base size of mould is than the big last circle of Die Box, the mould bottom surface does not need to cover air guide felt and vacuum bag, helps the intensification of test specimen in autoclave, and base is provided with hanging bolt for four jiaos, behind the parcel vacuum bag, still can carry, have characteristics simple in structure, easy to use with crane.

Four, description of drawings

Accompanying drawing 1 is the vertical view that is used for the mould of crooked age forming.

Accompanying drawing 2 is the structural representations that are used for the mould of crooked age forming, is the A-A view of accompanying drawing 1.

Accompanying drawing 3 is dismantle front views behind casing and the cover plate of the mould that is used for crooked age forming.

Accompanying drawing 4 is the profile schematic diagrames that are used for the mould of crooked age forming.

Accompanying drawing 5 is shaft side figures of last item support.

Accompanying drawing 6 is structural representations of template.

Accompanying drawing 7 is shaft side figures of supporting plate.Wherein:

1. base 2. hanging bolts 3. cover plates 4. casings 5. last item supports 6. templates

7. 10. times last items of upper pressure axial 8. supporting plates, 9. leading screws, 11. endless screw supports, 12. double threaded screws

13. worm gear 14. worm gear baffle plates 15. feed screw nuts 16. worm screws

Five, the specific embodiment

Embodiment one

Present embodiment is the mould (accompanying drawing 1 is to accompanying drawing 4) that is used for the thick plate bending age forming of (500 * 50 * 5) mm, comprise base 1, hanging bolt 2, cover plate 3, casing 4, last item support 5, template 6, upper pressure axial 7, supporting plate 8, leading screw 9, following last item 10, endless screw support 11, double threaded screw 12, worm gear 13, worm gear baffle plate 14 and feed screw nut 15, worm screw 16, wherein:

Base 1 is made of the rectangular boss at a rectangular metal base plate and plate upper surface middle part; The width of boss is consistent with the width of casing 4 inner surfaces, and cooperatively interacts; On the base plate, the boss both ends of the surface have endless screw support 11 respectively, the thickness sum of the length of boss and two endless screw supports 11 equals the length of casing 4 inner surfaces.1 four jiaos the tapped through hole that hanging bolt 2 is installed is arranged respectively at base.On the base plate of base 1 tapped blind hole is arranged, be used for fixing casing 4.There is the installing hole of the perpendicular blind hole of two axis and base as leading screw 9 at place, upper surface two ends in rectangular boss on the center line along its length; The diameter of this installing hole is with the diameter of leading screw lower end cylinder.Two tapped blind holes that double threaded screws 12 are installed are arranged respectively on the both sides of two leading screw installing holes, and and leading screw worm gear 13 between enough spaces are arranged.

Hanging bolt 2 adopts standard component.

Cover plate 3 is the rectangle framework, and the length and width of its housing are with the appearance and size of casing 4 lower end flange, and the length and width of inside casing are with the appearance and size of the rectangle frame of casing 4; The thickness of cover plate 3 should satisfy and holding quick change bolt head height, and its intensity should bear 15 atmospheric pressure, and can block the groove of casing 4 inferior horns.Cover plate 3 upper surface external margins are led big fillet, have blind hole on the corresponding position of profiled holes on lower surface and the casing 4, and the size of this blind hole is advisable to hold the quick change bolt head.

Casing 4 also is the rectangle framework, is the rectangular channel of up/down perforation in the framework, and its height can hold inner sleeve mechanism; Outwards there is a circle flange lower end of casing 4, has special-shaped through hole on the corresponding position of casing installing hole on flange and the base 1, is used for fixing casing 4; Special-shaped through hole is a rectangle, and big fillet is led at two ends, by quick change bolting casing 4; The lower end of the wallboard of casing 4 one sides and be positioned on the endless screw support 11 at this place and have concentric through hole; On the wallboards of box body of worm screw 16 1 ends that this through hole is opened at charger, and match with worm screw 6; For when mentioning casing 4, casing can not interfere with worm screw, and the through hole the latter half on casing 4 wallboards extends to the lower surface of casing 4 downwards always, has formed " door " shape groove that connects wallboard on wallboards of box body, should keep the complete of flange simultaneously.

Both sides on the two side wall panels of casing 4 symmetries have the installing hole of two upper pressure axials 7, and the center line of this installing hole is at same horizontal plane, and corresponding hole is concentric on two side wall panels; Two upper pressure axials 7 pass corresponding hole on the two side wall panels respectively, and make the center line of the center line of upper pressure axial 7 perpendicular to casing, by needle bearing and casing 4 movable cooperate (accompanying drawings 2).

The quick change bolt that uses on the casing 4 forms with the plain bolt transformation of the way, and plain bolt head hexahedron is processed into strip, and its width and length are slightly less than the width and the length of special-shaped through hole respectively.

Rectangle supporting plate 8 is three grades of stairsteppings of two ends symmetry.The first order of supporting plate 8 bottoms constitutes the basis of whole carriage, and there is the installing hole of feed screw nut 15 the corresponding position of leading screw installing hole on its lower surface two ends and the base 1, and the installation axis of the axis in this hole and leading screw coincides; Second level width is narrow slightly than the first order, for the last item support is reserved installing space, and in the longitudinal direction by two ends to the centre, it reduces highly gradually, and extend to the center of supporting plate, and constitute the V-arrangement face of a wide-angle, be used for template centering location in the longitudinal direction; In the lowest point of this " V " shape face, i.e. the center of supporting plate has shallow slot along the width of supporting plate, prevents to interfere with the wedge angle of template 6 bottoms.The third level is the projection that is positioned at two symmetries at two ends, the height of this projection is lower than the height of template 6 two ends steps slightly, being used for template clamps in the location of width, the width of the projection of two symmetries is more bigger than the cylinder diameter of envelope leading screw 9, makes between the leading screw 9 that is clipped in the middle of two templates 6 and two templates 6 all gapped.

Last item support 5 is the rectangle frame plate structure of symmetry, is rectangular through slot in the deckle board, and the height of this groove should be with the height sum of the supporting plate second level and the third level; The thickness of deckle board is with the width of supporting plate 8 first order steps, and height should satisfy deckle board upper surface height a little less than template 6 arc surface minimum points after the mould assembling.Deckle board upper surface on the long limit of the deckle board lower surface at last item support 5 two ends and rectangle is concordant, makes under the deckle board at two ends to be " door " font groove; Top, last item support long margin frame plate two ends all extends upward, and forms the relative last item installing plate of a pair of direction together with the deckle board at two ends, and the last item installing plate middle inside at two ends has a positioning block respectively, makes the cross section of last item installing plate be " E " shape; On the locating piece on the biside plate of last item installing plate and middle part, the installing hole of last item is once all arranged, and three holes are coaxial; Two clip slots that form between the locating piece at last item installing plate middle part and the biside plate of last item installing plate are as the testpieces mounting groove, and the mode that adds by machine, form a lid in the upper end of each mounting groove, the width of this lid should reach the position of center line of last item installing hole, forms the protection to last item; The width of testpieces mounting groove should satisfy the width of testpieces, and in mold integral assembling back and template 6 central lines along its length that is arranged in this groove.The deckle board two ends on long limit are arranged above and below and are distributed with four pairs of countersunk head screwed holes, below two pairs be used for fixedlying connected of last item support 5 self and supporting plate 8, above two pairs be used to clamp template 6.

Template 6 has two, and its profile is all identical with size, and all is symmetrical in its center line; The lower surface of template 6 is to be " V " shape face, and angle is identical with supporting plate " V " shape face, and both cooperatively interact; The upper surface both sides of template 6 are step-like, and the centre is the die face of circular arc; The chord length of die face and following last item 10 diameter sums equal the distance between the center of circle of casing 4 both upper ends thereof circular holes.

Upper pressure axial 7 and following last item 10 are cylindrical, and its diameter all cooperates with the internal diameter of needle bearing, and has enough intensity, to satisfy the needs of testpieces bending; Upper pressure axial 7 cooperates by needle bearing and casing 4, and following last item 10 cooperates by needle bearing and last item support 5; The length of upper pressure axial 7 and following last item 10 is slightly less than the width of casing 4 and last item support 5 respectively, and after guaranteeing that diaxon is installed, the two ends of axle can not be exposed at outside casing 4 and the last item support 5.

The length of leading screw 9 should make leading screw 9 at leading screw the height of near axis is installed highly being no more than arc surface on the template 6 after the installation, and has and enough intensity is arranged to satisfy the needs of testpieces bending.

Endless screw support 11 is tabular, and the boss width of length and base plate 1 equates that top is useful on the through hole that worm screw is installed.

The two ends of double threaded screw 12 are screw thread, and the centre is a polished rod, and the length of polished rod part is greater than turbine 13 thickness, and turbine rotation is flexible when guaranteeing that assembling is finished.

Worm gear 13 is the typical turbine of tin bronze, and its modulus is 2, and reference diameter is 84mm; The proportioning 40:1 of worm gear 13 and worm screw 16.

Worm gear baffle plate 14 is rectangular metal plate, and there is the via hole of leading screw 9 centre, and periphery has the installing hole of double threaded screw 12; The position of installing hole is corresponding with the tapped blind hole on base plate 1 boss.

Feed screw nut 15 is with reference to the feed screw nut on the lathe.

Worm screw 16 is a metal rod, and passing through is support cylinder, worm screw, power transmission shaft, worm screw, support cylinder and six square toes successively; Through hole on two support cylinder and the endless screw support 11 is rotatably assorted; The length of two ends six square toes is no more than the wall thickness of casing 4.

The accessory size of all supporting plate upper edge casing 4 inner surface movements and the fit clearance of interior equal the fit clearance of machine tool guideway.

During assembling:

Hanging bolt 2 is installed on the base 1 by the screwed hole on base 1 base plate.Two endless screw supports 11 are installed in the center, two ends of rectangular boss on the base 1.Two rhizoid thick sticks 9 be installed in rectangular boss on the base 1 on blind hole in, worm gear 13 is installed in an end of leading screw 9; Two worm gear baffle plates 14 are enclosed within respectively on two leading screws 9, and are fixed on the base 1 by double threaded screw 12.Worm screw 16 is installed on the endless screw support 11 by the support cylinder at two ends, and the coordination that cooperatively interacts of worm screw 16 and worm gear 13.Feed screw nut 15 is installed in the feed screw nut installing hole of supporting plate 8 lower surfaces, penetrates leading screw 9 again.Two templates were listed in the both sides of supporting plate third level projection in 6 minutes, and the V-type face of template 6 lower surfaces and supporting plate 8 cooperations; Last item support 5 is enclosed within on the template 6, and fixedlys connected with supporting plate 8 respectively and clamp template 6 by bolt.Following last item 10 is installed on the last item support 5 by needle bearing, and all must not give prominence to the side surface of last item support 5; Upper pressure axial 7 cooperates by needle bearing and casing 4, also all must not give prominence to the side surface of casing 4.So far, promptly finish the assembling of present embodiment.

During use, by the testpieces mounting groove on the last item support 5 two testpieces are installed earlier; The casing 4 that upper pressure axial 7 will be housed again is enclosed within on the base plate 1, and the quick change bolt of screwing on; After the loading, cover cover plate 3 at outer surface along casing 4.When external force through worm screw, worm gear, when leading screw is delivered to supporting plate, by the feed screw nut that is positioned on the supporting plate rotation of leading screw is converted into the translation of supporting plate along interior, the template that promotion is positioned on the supporting plate upward moves with a pair of the pressing down axially that is positioned on the last item support, finishes the crooked age forming to testpieces.

Claims

1. mould that is used for crooked age forming, it is characterized in that, comprise base (1), cover plate (3), casing (4), last item support (5), template (6), upper pressure axial (7), supporting plate (8), leading screw (9), following last item (10), endless screw support (11), worm gear (13) and worm screw (16), the upper surface middle part of base (1) is a boss, and endless screw support (11) all is equipped with in the end at these boss two ends; On place, the upper surface two ends of boss, along its length center line, axis and the perpendicular leading screw (9) of base are installed all; Worm gear (13) is installed in an end of leading screw (9); Two worm gear baffle plates (14) are enclosed within on two leading screws (9) respectively, the top of worm gear (13), and are fixed on the base (1); The two ends of worm screw (16) are installed on the endless screw support (11), cooperatively interact with worm gear (13); Feed screw nut (15) is positioned at worm gear baffle plate (14) top, and is fixed on the lower surface of supporting plate (8); Casing (4) is fixed on the base; Two upper pressure axials (7) are installed on the both sides of the two side wall panels upper end that is positioned at casing (4) symmetry, and the center line of upper pressure axial (7) is perpendicular to the center line of casing; Supporting plate (8) is positioned at base (1) upper surface center; Supporting plate is three grades of stairsteppings of two ends symmetry, and its upper surface is the V-arrangement face; The lower surface of template (6) is to be " V " shape face, and angle is identical with supporting plate " V " shape face; The upper surface both sides of template (6) are step-like, and the centre is the die face of circular arc; Two template branches are listed in the both sides of supporting plate third level projection, and " V " shape face of template (6) lower surface and supporting plate (8) partial " V " shape face are cooperated; The last item support (5) of frame plate structure is enclosed within on the template (6), and fixedlys connected with supporting plate (8) respectively and clamp template (6) by bolt; Following last item (10) is installed on the last item support (5).

2. a kind of according to claim 1 mould that is used for crooked age forming is characterized in that the first order of supporting plate (8) bottom constitutes the basis of whole carriage; The second level is the upper surface of supporting plate, and described " V " shape face is to reduce height by two ends gradually to the centre on the length direction of supporting plate, and it is formed to extend to the center of supporting plate; The third level is the projection that is positioned at two symmetries at two ends; There is the installing hole of feed screw nut (15) the corresponding position of leading screw installing hole on supporting plate (8) lower surface two ends and the base (1), and the installation axis of the axis in this hole and leading screw coincides;

3. a kind of according to claim 1 mould that is used for crooked age forming is characterized in that the thickness sum of the length of upper surface boss of base (1) and two endless screw supports (11) equals the length of casing (4) inner surface.

4. a kind of according to claim 1 mould that is used for crooked age forming is characterized in that the chord length of die face of template (6) upper surface and the distance between the center of circle that following last item (10) diameter sum equals casing (4) both upper ends thereof circular hole.

5. a kind of according to claim 1 mould that is used for crooked age forming is characterized in that casing (4) is the rectangle framework, is the rectangular channel of up/down perforation in the framework; The latter half of worm screw installing hole on the wallboards of box body extends to the lower surface of casing (4) downwards always, has formed " door " shape groove that connects wallboard on wallboards of box body; The center line of the installing hole of the upper pressure axial (7) of casing (4) two side wall panels upper end is at same horizontal plane, and corresponding hole is concentric on two side wall panels; Outwards there is a circle flange lower end of casing (4), and installing hole is arranged on the flange, and the position in this hole is corresponding with the casing installing hole on the base (1).

6. a kind of according to claim 1 mould that is used for crooked age forming is characterized in that the rectangle frame plate structure of last item support (5) for symmetry, is rectangular through slot in the deckle board, and the height of this groove should be with the height sum of the supporting plate second level and the third level; The width of the same supporting plate of the thickness of deckle board (8) first order step, height should satisfy deckle board upper surface height a little less than template (6) arc surface minimum point after the mould assembling; Last item support (5) two ends deckle board upper surface has a pair of cross section to be " E " shape, the relative last item installing plate of direction; On the locating piece on the biside plate of last item installing plate and middle part, the installing hole of following last item is all arranged, and three holes are coaxial; Two testpieces mounting grooves that form between the locating piece at last item installing plate middle part and the biside plate of last item installing plate; The deckle board two ends on long limit are arranged above and below and are distributed with screwed hole, and two pairs of following screwed holes are used for fixedlying connected of last item support (5) self and supporting plate (8), and two pairs of top screwed holes are used to clamp template (6).

7. a kind of according to claim 1 mould that is used for crooked age forming is characterized in that the activity of upper pressure axial (7) and casing (4) cooperates, and following last item (10) and last item support (5) are movable to be cooperated; The length of upper pressure axial (7) is slightly less than the width of casing (4); The length of following last item (10) is slightly less than last item support (5).

8. a kind of according to claim 1 mould that is used for crooked age forming is characterized in that cover plate (3) is rectangle framework, the appearance and size of the same casing of the length and width of its housing (4) lower end boss, the appearance and size of the rectangle frame of the same casing of the length and width of inside casing (4); The thickness of cover plate (3) should be able to hold the bolt head height, and can block the groove of casing (4) inferior horn; Cover plate (3) upper surface external margin is led big fillet, on the corresponding position of installing hole on lower surface and the casing (4) connecting hole is arranged.

9. as a kind of mould that is used for crooked age forming as described in the claim 2, it is characterized in that the center of " V " shape face of supporting plate (8) upper surface has shallow slot along the width of supporting plate; The height of the projection of the third level of formation supporting plate (8) is lower than the height of template (6) two ends step slightly, and the third level of supporting plate (8) is slightly larger than the cylindrical diameter of envelope leading screw (9).

10. as a kind of mould that is used for crooked age forming as described in the claim 6, it is characterized in that the upper end of described testpieces mounting groove has a width to reach the shield of the position of center line of last item installing hole; The width of testpieces mounting groove should satisfy the width of testpieces.