CA2526774A1 - Method for producing a peripherally closed hollow profiled element - Google Patents
Method for producing a peripherally closed hollow profiled element Download PDFInfo
- Publication number
- CA2526774A1 CA2526774A1 CA002526774A CA2526774A CA2526774A1 CA 2526774 A1 CA2526774 A1 CA 2526774A1 CA 002526774 A CA002526774 A CA 002526774A CA 2526774 A CA2526774 A CA 2526774A CA 2526774 A1 CA2526774 A1 CA 2526774A1
- Authority
- CA
- Canada
- Prior art keywords
- blank
- trimming
- hollow profiled
- profiled element
- internal high
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract 4
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract 6
- 238000009966 trimming Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims 4
- 238000005094 computer simulation Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 2
- 101000987063 Adamsia palliata Phospholipase A2 A2-hormotoxin-Apt1a Proteins 0.000 description 1
- 241001647756 Aulax Species 0.000 description 1
- 241000937413 Axia Species 0.000 description 1
- 240000008100 Brassica rapa Species 0.000 description 1
- 241001049165 Caria Species 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- 241000543381 Cliftonia monophylla Species 0.000 description 1
- 101150029544 Crem gene Proteins 0.000 description 1
- 101150083807 HSD17B10 gene Proteins 0.000 description 1
- 101100501326 Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809) nfo gene Proteins 0.000 description 1
- 241000594011 Leuciscus leuciscus Species 0.000 description 1
- 101100537948 Mus musculus Trir gene Proteins 0.000 description 1
- 241001614181 Phera Species 0.000 description 1
- 101100230601 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) HBT1 gene Proteins 0.000 description 1
- 241000344858 Tiaris Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 description 1
- SCJNCDSAIRBRIA-DOFZRALJSA-N arachidonyl-2'-chloroethylamide Chemical compound CCCCC\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCCl SCJNCDSAIRBRIA-DOFZRALJSA-N 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 125000004043 oxo group Chemical group O=* 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 101150097442 xthA gene Proteins 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/053—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure characterised by the material of the blanks
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
The invention relates to a method for producing a peripherally closed hollow profiled element by means of internal high-pressure forming. According to said method, a hollow longitudinal blank (5) is inserted into an internal high-pressure form tool (1) and, during the closing process of the form tool (1), the blank (5) which is fully inserted thereinto is compressed in a region between the two ends (9,10) thereof, whereafter the compressed blank (5) is enlarged into the end shape of the hollow profiled element by means of fluidic internal high pressure. The aim of the invention is to enable a reliable production of the hollow profiled element even in the event of large deformation of the hollow profiled blank (5) resulting during the closing of the form tool (1). To this end, the ends (9,10) of the blank (5) are cut before the compression process, respectively forming a bevelled front surface (12,13), and the cut contour of the ends (9,10) and the bevelling angle (.alpha.) are selected in such a way that the ends (9,10) are deformed by means of the compression process such that the front surfaces (12,13) thereof have an essentially plane form and assume a position that is as perpendicular as possible to the longitudinal extension of the blank (5).
Description
P0359~,5fW0/1 Da~.m~.erChr~r9~.er ~Q
t~etl~od fr~r raduc~.r~ a sr.i hera~:l closed. k~ol7,ow pxo~~.~.ed elr~mer~t ' .
s the ~.~ventian relates to e. m~~,hod far producing a per~.pl~exal~.y alaeed hollow ~a~of~,~,ed e~:emer~t according to the p~ream,ble o~ pe,tent ~cla.~,m 11 method of thg getae~i~ rye hoe been d~.~cloeed b~ WO
98/43758 Al. xn t-hia nae~, a Yi~,ank 4~ a k~ol,7,ctw profiled e~.ement c?f un~,~dxm ~xaa~ eectior~ ie 3.n~erte~d ~.n,to axx ir~ter~,a1 h~,gh~pra~~tix~e fprm~,ng tool, the die cav~.t~ of whic~ri has a radueed Garo~~ seat3ot~ relat~tve to the blank 15~ iri the xegion between ~,te ex~dg . Re a resu~.t, the inserted I~~.ank o~ th,e hollow pra~~,le~d element ~.s oampressed i~, th~.~ xeg~,ori d~r~.ng the a~,o~ir~g operation.
of the forming total. HowevGx, the e~rawing~-ire, x~aulting ~froiri this; c~f the blank ~t the hollow praf~.l~d e7,emexlt mar~i~ests iltse~.f ~,~, it~ol~.ri~,t~.an or defo~mat~.an a~ the end c?f the ble,nk, this ~ri~d.. aCUriri.i.rlg ~."'Eiat~..y.i~'leel,x~.y at '~~le Start of t~,e ~Faduata:on p~a~~~~ end berg di:~pr~~ed with the fxont dace per,~endi~cular~.~r to tYte lo~~itud,ina~.
extent c~~ ~.he blank. 0.h eoCGUnt o~ this ex~d aontc~ur ch'~txged bar the r~ot~,aret~8ioz~, end c~r~ aa~t~ux'a.t of the . tiJ.tin~ of the ~rnri~ faoe, the ~,~~.a~. p7.un~ere pre~~.ded with a c~ar~ia~,1 sealing reg~ioz~ r~r~d ~uh~sequ,entl~ daek~.~,g . with tl~e e~.~s a~. tl~e black. a~n oh~,~ peal o~~. th~ blank inadeyuate~Y xei~ct~.ve to the ~;rite~nal hig~1 pxeseure ~'ubeegti~n fly to be p~r~duaed.. The xeault c~~ this ~.s that th,~ ciperation aubeequeri-tly te.k~:n~ ,~~.ece~ ~ fog e~pandirig the b~:ar~k key ~ceer~e of the f~.uidia internal. h~,gk~
preeeur~ ~.~. not ao~~.etez~r r~3.ia3~'ie end t~ius the hai~;ow prs~~~.led eve~ce~t oanriot 3~e prod~tc~sd a~ deeixed.
~5 The el~jyot cif the i~i~rentio~, is to de~elc~p a method of then e~enerie~ type to th~~ e~~'e~r~t that rel~;e~~ss~ prbc'tudt~.on .
of the hali,dW p~a~ii~d eXemerrit 3.s made p~ee~.b~,e even duririrg prariour'laet~ aoseipreesiari deformeGiorie of the bla,n'k ~'~~5~15~WO~l ~ 'thd hollow prcs~i~.ed elerite~tt, whioh rssu~,t, durit~.g the alosiri~ a~ the ~'orm~.ng foal.
The ob~evt is adh.~,ev~d aoaord~,ng ~a the inve~e~ian by~
~ the. ~aatu~:es c~~ patent cXa~.m i.
The inven~,ion. is ~a,sed ox~, the kncw~led~e that tkie i da~c~x~matio~s Qoeuxring durirxg the oompx~s~ing o~ the k~~ar~k vary; bw ~~~npe~satad Cdr by the bxar~,l~ ends . being ~.o aut t4 sire ~Lr~ a spac~.~~.~ ma~.r~vx. "the t~~,mmfng acccxd~.ri~ tQ the ~.~IV'.ez~ticin a~ the k~J,anl~ e~ads aohiswee tk~e e~feo.~ t,ha~, a~tex xha cornpx~s~ion and, when the fcYm~.n~ tool ie ~vmpl.ete~.y a~.c~~~dt~ ths~ ~rorrt ~ ~aae~
the ends are flat as~d are a~ far as possib~,e on~rited Z8 p~rperia~iaularl,x ~c the . 7,angitudinal extent d~ the 'b~.an~'k. As a result o~ the ~ao~it~.ax~ o~ they blank e~tds which is a~hs.ev~d, the axial. plungers c~~,n dook with throe erid;~ a~ ~:~ the iaZ~nJ~ had not been trimtnad and had t~dt beeY~ eub~~rc~ted to acarc~pression be~'orahand;
the a~s~.al o plungers oaM there~'c~re su~~EiQ~.ont~,~r seal. o~~~
the ~alank at both ahda xt~lat~.ve trs the ~.r~t~r~nal l~.~gh. ~re's~wxe~
~tv,li tow F~e~ prcaducdd, a~ a result o~ ~h;ich ~~~.iable ~prQduct~.ar~ ~s~ the. Y~c~~l,oW p~xO~~.xed exet~ta~it i~ made ; ~abss~.~~.e. ~r~ ~ddi,tioh, a chip-remov~.z~~_ aol~.ision '; betv~ree~s, the a~~.a~., pl,u~~~xs and t~hc~ b~~nl~ ~btherwise ~5 yx~v'~:d~d w~,tb. t~.lted ~xc~t :~a.~ae~' 3~ avoided by the.
ih.~creM~io~; the ohi~ra arid ~7,iv~re wh~.aki axe p~'~duG~d iri the ,pxt~eess h:av'iiig to kse~ ~~rmc~ved iri a do~li-dated manner r~.'~tr~.n~ x r~wark o~erat~.c~r~ after . rettt~val.
of t'h,~.
~G ~~i~~.sh-~o.rcn~d ha~lc~~t. ~irc~'i~ed B~.e111e~.t. Tk~,is reniatral . us~ua:~.ly iriwa~.ves se~t~e~xrs~ e~f~ the sea.l.i~.~
s~~~~ori~ a~
the l~~aralc, ~~ld~, gc~ that, eLWri, ~, tx'ilttm3rlc"~
d~ara,t3cit'~ dxri 1~~ d~.~p~n~ed r~~,t~t ~rw aG~r~~:r~t 'a~ the ~.n.~rerrtt~:on,.
it. b-ei~,g pwsyib~.e.. iii ac~di'titi~, trr 'savix~~ l~bc~r, to' ea~re ~rtat~ri.~.l:
~
~ ~~r~;p ~ c~i,~~'ioult tar dig~aeg a.. It ~;s a~.aa~ Mca 1o~2~e~
~eo~svaxy t~ plan in advax~d~ for a~ :oat am~~ib'~,~snal l~hc~th. o~ tha: b'iankv. ~e~ a ra~u~a o~ ~rF~3~h: the Fri~t,ior~
k~~tv~r~e~~ bia~xk ~.nd, ~Clrtni~~ fowl to b~ c~V'er~t~m~.
during .
P035915/WO/1 - 3 w the eube~equent ~x~ane~.vn o~.the blank by means o~
3nt~xnal ha.gh presguxe is aorieid~erab~.y reduced . en account o~ the ehdrter ~,~~agth of the blank, Tn a pxe~er~~d embodiment e~f the ~,rsv~erit~,Qr~ a~ c~a~,med ~.n, claim 2, the ends 0~ ~ the ~~,e,r~k are trimmed in euGh a way that, the ~'ro~t ~'acea a~ they ends are bave~led re~.ative to the aex~ter aa~is ly~.rag in the compxesaion e~iredtic~n an,d rutxnyng transversely to the ~.dngitudi~.a1 1o axis o~ the ?alarik. This txi~m~d ~o'rm results from the additipnal, khowredge that the de~or~atiorm o~ the blank wh~,eh aye produced $y the aomp~esaion as a. ~unot~.or~ o~
the Gc~mpre~ei~icsxx d~.reot~.r~r~ ~.ead to ~.~ali~,ation oaf the tuba end crcge. e~~t~.an arid thu6 of the ~'xtr~t ~aoe is ralat3.yvg to ea~.d a~ef.~ r ea that 'the rube ends. arcs beveled iri the Qp~roe~.t~+- direction with~.n the scope o~
the i,nverit~.ori. During Che aforesaid iMaTinatic~itz a~ the are~ee ea~tionr a top pe~ripheraJ, rsgia.z~ of the tuh~i end p~o~-~eots beyond its bottom per'iph~rai ~"e~'~nx~ ire, the 24 a,a~a.al, direotion.
Tw a ~~:xthA.~ pre~erxed c~e~e~:Apmerxt 4~ the. ~,nvent 3~on ae claimed ~~ri claim ~ , tha blank E:~d# are t,r~.t~rrie~l.. in ~'~,k~Y~
a way ehaC thoix f~c~nt ~aaee remain arranged para'11e1 ~5 to cue another. ~~, the event a~ the end, ragions c~ the '. bLax~~ o~ the hollbw pro~'i~.ed element oatlir~y ~Gc~ l~:e '~rertiQaxly outset x~lative tc~ ane aMathar ai°te~
aare~e~~,dn hd~r deer: e~~"edt~ad, tl~e grant ~aoe a~. the owe uritr~.mmed,, ehd ie tiltad upward, ec~ the,t the bottom 3t~ pe~riphera~l re~y~,~ri: p~o~eoGe axa,a7,7;y lae~r~nd the top pex~~.phe~xl version a~ th,e endr anal the ~xoz~~ ~aae: c~~ the other s~nt~smt~~d end ~.a tilted downward., the top pe~r~,phera~, r:e~iaw e~ th:e i~~cd ~rro~act~.rir,~ be~yc~nd the b~a~tcm peryphei~al res~~:c~n ire the a~.~,a7. c~.~.xeoti.~on. '~'he 3~ h~.~~T~ oen tl~er~~o~e be . tr~.nttied eat. both ends at tMe same aazg~.~ 3:r~, C~he~ oppat~ite . di~ea'ti~n caf the t~.ltir~g~ b~~pre thy ~a~tp~e~~iori op~e~at3,r~r~: '~'h~ xee~xting hottra~~~,~ity o~
the tr:tctu~tir~g at tha ewCrte time ma~ee the wo~~. duxiriy the ~435915/WOJ1 - 4 ~ __ atxt~,iz~g praae~~ e~eier. ~t~, addition, the sa,tn~ a.~~iie~
to a ~:~tera7. d~~set of the ersds after compresg3on has b~et~ e~~e~t~d:
R~~ ~s~eoia7.yy ~xre~erred ernbodi.mant aE the ir~~rer~~~.on as cla~.m~:d ita oiaim 4 cax~st~.tutea. tk~e ~ip~ai~id determir~atior~ of ,the be~r~~,ing anc~Za~ of tMe tr~.mma.ng, which l~.es With~.n a range d~ between 6~ arid ~.0°, pxe~era.la~.y 84. xx~ th~.a r~speCt, pr~atica2 arid o t~reoraticaJ. iz~ues~G~:gation~ hare sh,owri that the tiit~.r~g of the ~rc~rit. faCles whidh ie caused, Iayr~ the cc~ctt~~eesin~
da~carmatior~ virtually always lien within this ~ngu7,ar rang. do that are, e~qua~,7:~r large beveliri~ ari,g7,e pf the ~rt~rst ~aae of tli~ e~r:d has to he pxa~rid~ed i~t the ~ nppoait$ direatian dux~.~xg xh8 trimming.
A~carding~ to ~ further ~ ~are~erxed embad:Lment of the ixwent~.an as. olaimed ~.n a7;a.im 3. they arid defvzmati.on a~s~tua~.ly or~~ur~ing doer tc the euk~pec~uet~,t com~xeeei.vr~.
o v~~rat,~;an ie determined by a ao~putex ~imulat~,o~nr ire p~t~t~.aulax a firi~,te-elem~n~t eimu7~atian, J~efc~rv the;
trimming of the ends aMd tl~eM, a;ri csp~iirtutr~ triimt~ing ~r ntaur arid an opt~.m~xm b~~reZ~.ng angle r~~ tlaa txi~minc~
tc~ be effe~sted ie pxeo~.eely aa~,cu~.atecl. th$r~~xc~ril far ~ cc~tti~eneatir~g for thp def4rmatic~n. ~r~, this wad, the b~wsc~.i,ng~ angle ~d t~ei~mi.z~~ ccantaur au~aa~le far eat~h aotnpcsrie~t arid far ~~xex~ hype of adfipr~se~.bt~ a~~, deG:exm~.ri~d ind~,vidtia~.xy relatively oaealg ~withaut rveo~tine~ te, rzumerou~r, Xal~orious, ~thpi~~.va,l 3 4 ~:n~r$~t i~at ivrig .
~~eardi~sg to a further pr~fer'x~d ~t~ar~dirn~r~t a~ the i,ri~r~~it~:cr~ as. a~,aim~d ~,r~ Q~,~,~:m .~, the t~immir~y of d~y' ~i~ affected two~dime~.~~.caria~.T~. ~w this ~~~e, 3~ a7.thc~ugM t~e~ exa~at ~~pat~:a~~1 ~~ntc~ur c~~ tie. b~:a,rik ei~~. ig ntst aave,red. auah trir~3~t~ a~n . 3~e c-a~x~.~d but i~, yin ~~~~e~ial3:~r ~aon.om~.aa~ m~nna.x w~:t.h ~es~ewt. to the m~~~l~dd;
ati~d ~u~.ak5.~.
P03591~/W0~1 - 5 -Ia an espeaia~.3.y p~re~erred eri~l~odimer~.t~ of the invention . as al$~.Zt~ted iri ala~.m 7, the trimm~.r~.g o~. the ends is effected by a three-dimene~.onal con~tcsur cut , Th~.s mad be effedted, fox exampxe, by m~ax~s c~~ a~ dotting laser and offers the best oox~r~,eeting area. im~rgirt~,b7:e to the axially doak~,x~g pluMgare, eo that optimum ~eal~.ng is achieved by ttt~ane of bhe plungers.
~o ~, The ~.nver~tiari i~ expl:ained in more deta3Z with referer~oe to are exemplary emb8diment enewn in. the drawings, ias rwh~.ah:
fig. Z ahoWe a, ~.a~teral half seatio~r of s. b~.ank of a 15 hol~.ow prof~.led e7.ement trimmed oz~ - both e~.dds acoordingr to she ~.nve~t~,on. ire an opened forming tool, .
fig. 2 shows a lat~ara~. ha~.f sect3.or~ of the la~.~rik o~ the ~o ho5:low profiled elemsz~t fr4m f~.gure l aft~x Che compres~~.er~, operat'iort~ nee been effedted, in a ~clo~ed inte~r~ax hi~h~pxeseure fbrminr~ tco7; .
Shaven in f~.gurs ~1 is an ~.riter~na~. high-pree~uace forming ~ tool 1 whfiah aonsists of a tog part 2 and a bo~Gtc~t~ part 3. '~ha tvol die oa-v~~.ty ~,, whi,ah. is foxtried by botY~ tool parts Z and. 3 ~,nd de~~.ne~ a ~vri»ing ~spaoe .far ~, k3la~k 5 of a ho7:3,ow pxo~i~.ed, eletitent to 'be ~ctrYttad w15t3ah is ~.~xeerted ~.nto the tool, z,, ~.~ .~~~x~.gned in eua~. a Way 3o that one end 6 of they die oatrity 4 ~a e.~rax~ged ~rertically ofipet rel~,t,~:~~e~ to the ether Grid 7. Ixs, the closed fo~m~.z~g foal 1 aaaordin~ xo f~.gure~ 2, these two.
ends 6 and 7 c~~ the die t~awity hare ap~rvx~.riwt~7.y the:
s~cire vismster a.~s tkie inl~e~t~sd bls,z~ ~ df tie ho~.~.t~w ~ p~rof~.led el~me~xt . 'the die Cav~i~y' 9r ie co'~ididexablxr cenartxiated in oxoes e~sation in a oex~te~r re~i.o~i 6, wk~iah. aorx~ieats the two e~,da ~ a~c~ ? to one a~othdx.
I~0~5915/~1o/1 - 6 -The blank 5 of tyke hol5.o~r pro~~.led. eleinsnt l~a~ ~.x~ turn, at ate two ands 9 and 10, ~ ra~pedti~we f .rout face 12 Or Z~ inc~.ined i,~, the dixeet~.4n' o~ the lon~it~,d~.na~. ~.xie y3, off' the bl~,rilc 5 c~f the ~ral~.ow pra~iled e~,emer~t , 8 Whereas a top per3phex~~,~. ~eg:Con. o~ the frr~tst ~'aaa 12 prc~~ ~cte . ~e~rond ita b~tt~rm per~.phex~al reg~.bn 1.5 irt the a~~.al dix~ec~tion, a bQ~~an~ pe~i~,pheral, reg~.on o~ the front face 13 projects. beyo~,d itp top per~,phexa~. xegien 1'7 ~.n the ax~.a~, d~.xeat~:~ir~. The b7.arik 5 of the I~al'7.aw ~.0 profi.led element, in which' the ~xorit ~aoee ~.~ and ~.~ of ite erode 9 and 1o are axr~,n5ed Pa~a7.~.e1 td axxe a~n~stri.er,.
is ~oca,ted aot~plete~,y ~.n~sid~ the die aav~:ty ~ of th,e fc~rtitf n~ tao~, 1 , The. , bev~~li~;g ang~,e a. o~ tha ~rr~rit ~aca l~ ox 13, reapect~.~xel.~r', r~slati~ra .to the center v'ertiea~.
~,5 axis ~.$ :Ls s~ .
To produce the holavw px'v~~:led e~.ement, ~ixst, whe ~srid~
s and to v~ t~hs blank 5 pare trimmed in such a way that Jae'v'~Zed front ~a,ae~ ~,~ and' ~.3~ axe obtainedr iri which 20 ~ca~e the lat.tew are whe.xe ~r~i~~ible to be b~~re.~.ed re~;~,t~.~e , to the axis Ty~.i~~ in the aQm~xe~a~.n~x d~.~eation a.ri order to obtain ~,ra. optimum defo~icri ~e~sult grotto the aom~sreas~.an cap~ratian, aizd; thin ire ardv~ tv az~eure -~ ~sou~d aeal~.ng o~ the ax~.al plungers d~st~king l
t~etl~od fr~r raduc~.r~ a sr.i hera~:l closed. k~ol7,ow pxo~~.~.ed elr~mer~t ' .
s the ~.~ventian relates to e. m~~,hod far producing a per~.pl~exal~.y alaeed hollow ~a~of~,~,ed e~:emer~t according to the p~ream,ble o~ pe,tent ~cla.~,m 11 method of thg getae~i~ rye hoe been d~.~cloeed b~ WO
98/43758 Al. xn t-hia nae~, a Yi~,ank 4~ a k~ol,7,ctw profiled e~.ement c?f un~,~dxm ~xaa~ eectior~ ie 3.n~erte~d ~.n,to axx ir~ter~,a1 h~,gh~pra~~tix~e fprm~,ng tool, the die cav~.t~ of whic~ri has a radueed Garo~~ seat3ot~ relat~tve to the blank 15~ iri the xegion between ~,te ex~dg . Re a resu~.t, the inserted I~~.ank o~ th,e hollow pra~~,le~d element ~.s oampressed i~, th~.~ xeg~,ori d~r~.ng the a~,o~ir~g operation.
of the forming total. HowevGx, the e~rawing~-ire, x~aulting ~froiri this; c~f the blank ~t the hollow praf~.l~d e7,emexlt mar~i~ests iltse~.f ~,~, it~ol~.ri~,t~.an or defo~mat~.an a~ the end c?f the ble,nk, this ~ri~d.. aCUriri.i.rlg ~."'Eiat~..y.i~'leel,x~.y at '~~le Start of t~,e ~Faduata:on p~a~~~~ end berg di:~pr~~ed with the fxont dace per,~endi~cular~.~r to tYte lo~~itud,ina~.
extent c~~ ~.he blank. 0.h eoCGUnt o~ this ex~d aontc~ur ch'~txged bar the r~ot~,aret~8ioz~, end c~r~ aa~t~ux'a.t of the . tiJ.tin~ of the ~rnri~ faoe, the ~,~~.a~. p7.un~ere pre~~.ded with a c~ar~ia~,1 sealing reg~ioz~ r~r~d ~uh~sequ,entl~ daek~.~,g . with tl~e e~.~s a~. tl~e black. a~n oh~,~ peal o~~. th~ blank inadeyuate~Y xei~ct~.ve to the ~;rite~nal hig~1 pxeseure ~'ubeegti~n fly to be p~r~duaed.. The xeault c~~ this ~.s that th,~ ciperation aubeequeri-tly te.k~:n~ ,~~.ece~ ~ fog e~pandirig the b~:ar~k key ~ceer~e of the f~.uidia internal. h~,gk~
preeeur~ ~.~. not ao~~.etez~r r~3.ia3~'ie end t~ius the hai~;ow prs~~~.led eve~ce~t oanriot 3~e prod~tc~sd a~ deeixed.
~5 The el~jyot cif the i~i~rentio~, is to de~elc~p a method of then e~enerie~ type to th~~ e~~'e~r~t that rel~;e~~ss~ prbc'tudt~.on .
of the hali,dW p~a~ii~d eXemerrit 3.s made p~ee~.b~,e even duririrg prariour'laet~ aoseipreesiari deformeGiorie of the bla,n'k ~'~~5~15~WO~l ~ 'thd hollow prcs~i~.ed elerite~tt, whioh rssu~,t, durit~.g the alosiri~ a~ the ~'orm~.ng foal.
The ob~evt is adh.~,ev~d aoaord~,ng ~a the inve~e~ian by~
~ the. ~aatu~:es c~~ patent cXa~.m i.
The inven~,ion. is ~a,sed ox~, the kncw~led~e that tkie i da~c~x~matio~s Qoeuxring durirxg the oompx~s~ing o~ the k~~ar~k vary; bw ~~~npe~satad Cdr by the bxar~,l~ ends . being ~.o aut t4 sire ~Lr~ a spac~.~~.~ ma~.r~vx. "the t~~,mmfng acccxd~.ri~ tQ the ~.~IV'.ez~ticin a~ the k~J,anl~ e~ads aohiswee tk~e e~feo.~ t,ha~, a~tex xha cornpx~s~ion and, when the fcYm~.n~ tool ie ~vmpl.ete~.y a~.c~~~dt~ ths~ ~rorrt ~ ~aae~
the ends are flat as~d are a~ far as possib~,e on~rited Z8 p~rperia~iaularl,x ~c the . 7,angitudinal extent d~ the 'b~.an~'k. As a result o~ the ~ao~it~.ax~ o~ they blank e~tds which is a~hs.ev~d, the axial. plungers c~~,n dook with throe erid;~ a~ ~:~ the iaZ~nJ~ had not been trimtnad and had t~dt beeY~ eub~~rc~ted to acarc~pression be~'orahand;
the a~s~.al o plungers oaM there~'c~re su~~EiQ~.ont~,~r seal. o~~~
the ~alank at both ahda xt~lat~.ve trs the ~.r~t~r~nal l~.~gh. ~re's~wxe~
~tv,li tow F~e~ prcaducdd, a~ a result o~ ~h;ich ~~~.iable ~prQduct~.ar~ ~s~ the. Y~c~~l,oW p~xO~~.xed exet~ta~it i~ made ; ~abss~.~~.e. ~r~ ~ddi,tioh, a chip-remov~.z~~_ aol~.ision '; betv~ree~s, the a~~.a~., pl,u~~~xs and t~hc~ b~~nl~ ~btherwise ~5 yx~v'~:d~d w~,tb. t~.lted ~xc~t :~a.~ae~' 3~ avoided by the.
ih.~creM~io~; the ohi~ra arid ~7,iv~re wh~.aki axe p~'~duG~d iri the ,pxt~eess h:av'iiig to kse~ ~~rmc~ved iri a do~li-dated manner r~.'~tr~.n~ x r~wark o~erat~.c~r~ after . rettt~val.
of t'h,~.
~G ~~i~~.sh-~o.rcn~d ha~lc~~t. ~irc~'i~ed B~.e111e~.t. Tk~,is reniatral . us~ua:~.ly iriwa~.ves se~t~e~xrs~ e~f~ the sea.l.i~.~
s~~~~ori~ a~
the l~~aralc, ~~ld~, gc~ that, eLWri, ~, tx'ilttm3rlc"~
d~ara,t3cit'~ dxri 1~~ d~.~p~n~ed r~~,t~t ~rw aG~r~~:r~t 'a~ the ~.n.~rerrtt~:on,.
it. b-ei~,g pwsyib~.e.. iii ac~di'titi~, trr 'savix~~ l~bc~r, to' ea~re ~rtat~ri.~.l:
~
~ ~~r~;p ~ c~i,~~'ioult tar dig~aeg a.. It ~;s a~.aa~ Mca 1o~2~e~
~eo~svaxy t~ plan in advax~d~ for a~ :oat am~~ib'~,~snal l~hc~th. o~ tha: b'iankv. ~e~ a ra~u~a o~ ~rF~3~h: the Fri~t,ior~
k~~tv~r~e~~ bia~xk ~.nd, ~Clrtni~~ fowl to b~ c~V'er~t~m~.
during .
P035915/WO/1 - 3 w the eube~equent ~x~ane~.vn o~.the blank by means o~
3nt~xnal ha.gh presguxe is aorieid~erab~.y reduced . en account o~ the ehdrter ~,~~agth of the blank, Tn a pxe~er~~d embodiment e~f the ~,rsv~erit~,Qr~ a~ c~a~,med ~.n, claim 2, the ends 0~ ~ the ~~,e,r~k are trimmed in euGh a way that, the ~'ro~t ~'acea a~ they ends are bave~led re~.ative to the aex~ter aa~is ly~.rag in the compxesaion e~iredtic~n an,d rutxnyng transversely to the ~.dngitudi~.a1 1o axis o~ the ?alarik. This txi~m~d ~o'rm results from the additipnal, khowredge that the de~or~atiorm o~ the blank wh~,eh aye produced $y the aomp~esaion as a. ~unot~.or~ o~
the Gc~mpre~ei~icsxx d~.reot~.r~r~ ~.ead to ~.~ali~,ation oaf the tuba end crcge. e~~t~.an arid thu6 of the ~'xtr~t ~aoe is ralat3.yvg to ea~.d a~ef.~ r ea that 'the rube ends. arcs beveled iri the Qp~roe~.t~+- direction with~.n the scope o~
the i,nverit~.ori. During Che aforesaid iMaTinatic~itz a~ the are~ee ea~tionr a top pe~ripheraJ, rsgia.z~ of the tuh~i end p~o~-~eots beyond its bottom per'iph~rai ~"e~'~nx~ ire, the 24 a,a~a.al, direotion.
Tw a ~~:xthA.~ pre~erxed c~e~e~:Apmerxt 4~ the. ~,nvent 3~on ae claimed ~~ri claim ~ , tha blank E:~d# are t,r~.t~rrie~l.. in ~'~,k~Y~
a way ehaC thoix f~c~nt ~aaee remain arranged para'11e1 ~5 to cue another. ~~, the event a~ the end, ragions c~ the '. bLax~~ o~ the hollbw pro~'i~.ed element oatlir~y ~Gc~ l~:e '~rertiQaxly outset x~lative tc~ ane aMathar ai°te~
aare~e~~,dn hd~r deer: e~~"edt~ad, tl~e grant ~aoe a~. the owe uritr~.mmed,, ehd ie tiltad upward, ec~ the,t the bottom 3t~ pe~riphera~l re~y~,~ri: p~o~eoGe axa,a7,7;y lae~r~nd the top pex~~.phe~xl version a~ th,e endr anal the ~xoz~~ ~aae: c~~ the other s~nt~smt~~d end ~.a tilted downward., the top pe~r~,phera~, r:e~iaw e~ th:e i~~cd ~rro~act~.rir,~ be~yc~nd the b~a~tcm peryphei~al res~~:c~n ire the a~.~,a7. c~.~.xeoti.~on. '~'he 3~ h~.~~T~ oen tl~er~~o~e be . tr~.nttied eat. both ends at tMe same aazg~.~ 3:r~, C~he~ oppat~ite . di~ea'ti~n caf the t~.ltir~g~ b~~pre thy ~a~tp~e~~iori op~e~at3,r~r~: '~'h~ xee~xting hottra~~~,~ity o~
the tr:tctu~tir~g at tha ewCrte time ma~ee the wo~~. duxiriy the ~435915/WOJ1 - 4 ~ __ atxt~,iz~g praae~~ e~eier. ~t~, addition, the sa,tn~ a.~~iie~
to a ~:~tera7. d~~set of the ersds after compresg3on has b~et~ e~~e~t~d:
R~~ ~s~eoia7.yy ~xre~erred ernbodi.mant aE the ir~~rer~~~.on as cla~.m~:d ita oiaim 4 cax~st~.tutea. tk~e ~ip~ai~id determir~atior~ of ,the be~r~~,ing anc~Za~ of tMe tr~.mma.ng, which l~.es With~.n a range d~ between 6~ arid ~.0°, pxe~era.la~.y 84. xx~ th~.a r~speCt, pr~atica2 arid o t~reoraticaJ. iz~ues~G~:gation~ hare sh,owri that the tiit~.r~g of the ~rc~rit. faCles whidh ie caused, Iayr~ the cc~ctt~~eesin~
da~carmatior~ virtually always lien within this ~ngu7,ar rang. do that are, e~qua~,7:~r large beveliri~ ari,g7,e pf the ~rt~rst ~aae of tli~ e~r:d has to he pxa~rid~ed i~t the ~ nppoait$ direatian dux~.~xg xh8 trimming.
A~carding~ to ~ further ~ ~are~erxed embad:Lment of the ixwent~.an as. olaimed ~.n a7;a.im 3. they arid defvzmati.on a~s~tua~.ly or~~ur~ing doer tc the euk~pec~uet~,t com~xeeei.vr~.
o v~~rat,~;an ie determined by a ao~putex ~imulat~,o~nr ire p~t~t~.aulax a firi~,te-elem~n~t eimu7~atian, J~efc~rv the;
trimming of the ends aMd tl~eM, a;ri csp~iirtutr~ triimt~ing ~r ntaur arid an opt~.m~xm b~~reZ~.ng angle r~~ tlaa txi~minc~
tc~ be effe~sted ie pxeo~.eely aa~,cu~.atecl. th$r~~xc~ril far ~ cc~tti~eneatir~g for thp def4rmatic~n. ~r~, this wad, the b~wsc~.i,ng~ angle ~d t~ei~mi.z~~ ccantaur au~aa~le far eat~h aotnpcsrie~t arid far ~~xex~ hype of adfipr~se~.bt~ a~~, deG:exm~.ri~d ind~,vidtia~.xy relatively oaealg ~withaut rveo~tine~ te, rzumerou~r, Xal~orious, ~thpi~~.va,l 3 4 ~:n~r$~t i~at ivrig .
~~eardi~sg to a further pr~fer'x~d ~t~ar~dirn~r~t a~ the i,ri~r~~it~:cr~ as. a~,aim~d ~,r~ Q~,~,~:m .~, the t~immir~y of d~y' ~i~ affected two~dime~.~~.caria~.T~. ~w this ~~~e, 3~ a7.thc~ugM t~e~ exa~at ~~pat~:a~~1 ~~ntc~ur c~~ tie. b~:a,rik ei~~. ig ntst aave,red. auah trir~3~t~ a~n . 3~e c-a~x~.~d but i~, yin ~~~~e~ial3:~r ~aon.om~.aa~ m~nna.x w~:t.h ~es~ewt. to the m~~~l~dd;
ati~d ~u~.ak5.~.
P03591~/W0~1 - 5 -Ia an espeaia~.3.y p~re~erred eri~l~odimer~.t~ of the invention . as al$~.Zt~ted iri ala~.m 7, the trimm~.r~.g o~. the ends is effected by a three-dimene~.onal con~tcsur cut , Th~.s mad be effedted, fox exampxe, by m~ax~s c~~ a~ dotting laser and offers the best oox~r~,eeting area. im~rgirt~,b7:e to the axially doak~,x~g pluMgare, eo that optimum ~eal~.ng is achieved by ttt~ane of bhe plungers.
~o ~, The ~.nver~tiari i~ expl:ained in more deta3Z with referer~oe to are exemplary emb8diment enewn in. the drawings, ias rwh~.ah:
fig. Z ahoWe a, ~.a~teral half seatio~r of s. b~.ank of a 15 hol~.ow prof~.led e7.ement trimmed oz~ - both e~.dds acoordingr to she ~.nve~t~,on. ire an opened forming tool, .
fig. 2 shows a lat~ara~. ha~.f sect3.or~ of the la~.~rik o~ the ~o ho5:low profiled elemsz~t fr4m f~.gure l aft~x Che compres~~.er~, operat'iort~ nee been effedted, in a ~clo~ed inte~r~ax hi~h~pxeseure fbrminr~ tco7; .
Shaven in f~.gurs ~1 is an ~.riter~na~. high-pree~uace forming ~ tool 1 whfiah aonsists of a tog part 2 and a bo~Gtc~t~ part 3. '~ha tvol die oa-v~~.ty ~,, whi,ah. is foxtried by botY~ tool parts Z and. 3 ~,nd de~~.ne~ a ~vri»ing ~spaoe .far ~, k3la~k 5 of a ho7:3,ow pxo~i~.ed, eletitent to 'be ~ctrYttad w15t3ah is ~.~xeerted ~.nto the tool, z,, ~.~ .~~~x~.gned in eua~. a Way 3o that one end 6 of they die oatrity 4 ~a e.~rax~ged ~rertically ofipet rel~,t,~:~~e~ to the ether Grid 7. Ixs, the closed fo~m~.z~g foal 1 aaaordin~ xo f~.gure~ 2, these two.
ends 6 and 7 c~~ the die t~awity hare ap~rvx~.riwt~7.y the:
s~cire vismster a.~s tkie inl~e~t~sd bls,z~ ~ df tie ho~.~.t~w ~ p~rof~.led el~me~xt . 'the die Cav~i~y' 9r ie co'~ididexablxr cenartxiated in oxoes e~sation in a oex~te~r re~i.o~i 6, wk~iah. aorx~ieats the two e~,da ~ a~c~ ? to one a~othdx.
I~0~5915/~1o/1 - 6 -The blank 5 of tyke hol5.o~r pro~~.led. eleinsnt l~a~ ~.x~ turn, at ate two ands 9 and 10, ~ ra~pedti~we f .rout face 12 Or Z~ inc~.ined i,~, the dixeet~.4n' o~ the lon~it~,d~.na~. ~.xie y3, off' the bl~,rilc 5 c~f the ~ral~.ow pra~iled e~,emer~t , 8 Whereas a top per3phex~~,~. ~eg:Con. o~ the frr~tst ~'aaa 12 prc~~ ~cte . ~e~rond ita b~tt~rm per~.phex~al reg~.bn 1.5 irt the a~~.al dix~ec~tion, a bQ~~an~ pe~i~,pheral, reg~.on o~ the front face 13 projects. beyo~,d itp top per~,phexa~. xegien 1'7 ~.n the ax~.a~, d~.xeat~:~ir~. The b7.arik 5 of the I~al'7.aw ~.0 profi.led element, in which' the ~xorit ~aoee ~.~ and ~.~ of ite erode 9 and 1o are axr~,n5ed Pa~a7.~.e1 td axxe a~n~stri.er,.
is ~oca,ted aot~plete~,y ~.n~sid~ the die aav~:ty ~ of th,e fc~rtitf n~ tao~, 1 , The. , bev~~li~;g ang~,e a. o~ tha ~rr~rit ~aca l~ ox 13, reapect~.~xel.~r', r~slati~ra .to the center v'ertiea~.
~,5 axis ~.$ :Ls s~ .
To produce the holavw px'v~~:led e~.ement, ~ixst, whe ~srid~
s and to v~ t~hs blank 5 pare trimmed in such a way that Jae'v'~Zed front ~a,ae~ ~,~ and' ~.3~ axe obtainedr iri which 20 ~ca~e the lat.tew are whe.xe ~r~i~~ible to be b~~re.~.ed re~;~,t~.~e , to the axis Ty~.i~~ in the aQm~xe~a~.n~x d~.~eation a.ri order to obtain ~,ra. optimum defo~icri ~e~sult grotto the aom~sreas~.an cap~ratian, aizd; thin ire ardv~ tv az~eure -~ ~sou~d aeal~.ng o~ the ax~.al plungers d~st~king l
2~ subeaguc~rit~.y fcrr tree interxsa7. h~.~h-~~rawuxe ~'wrm~.ng~. In~
th$.s ~xsi~p~.a.ry ~~ibr~c~~.r~erit, the ble,i~l~ c~rid~ 9 ari~t~ ~.0 are trioimed: i~; such a way that tl~e~;x front ~~zces 12 end 13 ~s~r~iri ~iaraa~,e1 to area ar~ather. ~ri order eo permit the desired tri~ntning, the defrirma'~iai~ o~ the snda 9 aMd 10 ~0 wl~~.ah i.~ cauaad by the suukw~c~u~nt ac~iire~s~.on. i~pc~x.~t~.an ~.a. det,~rmined ~ae~o.ra the trtmm~.3~g c~p4r~,t,iori ire. a ~~a~ita-e7.ement computer ~ i~i,mu~,ation arid they, the ~ui~al~~,e trimming ~c~ritaur vr~t~ the ~utitala7~e. bew~~.~n~
acg~:e oc, is ~a~.au~:ated there~xdm~ T~,a 'blank ~, of th$
~5 h.ca~:l~w ~xa~~,~.ed e~~m~nt t~;~.m~ried 3n this way ~,e mow lr~~erted i~stc~ tl~e d~;e c~avlty a~ a~ the ~r~~~ting tool a~t~r i~h~,ah them latt~x i,~ ~~.a~ed, tin. aoGc~u~t, r~~ the o~M't~r r~g~.c~n ~ which, conet~~ot~ th~~ d~,~ da~t~,t~ g, the P4359~.5/Wd/~.~ : 7 b~.e~x~k 5 of the hollow profixed e~.eme~t is aomprase~sd duri~xg the axo~ing c~~t~ir~;tion of the formia~r ~too~, 2 by thc~ tCp part 2 and the bpttcim part 3 mo~xi.~,g toward ana anothex, ~k~~ Centex ac~mpre~aian ~.~, which aari be eeeri S from ~~.gure Z, which, showy tk~e forming tool ~7, i~a its d~.o~3ad atats, acts en ~ the ands 9 and 7,0 of the b.~.~,~k ~a of the ht~lldrn profi~,ed e~.~ment ire ~~u,ah s, v~ay that the front faaee ~.2 arid 13 of the b~,ank 5 are ~i~.epoeed per~aarsdiou~.arly to its lcir~gitudinal extent . 'fhe ax~.a1 16 ~rlun~era are then mn~ed tap tca the ex~.da 9 arid 1C of tha blank s of th~ hollow prd~iled eiemer~~, and aea~. the latter with a aoriiaa5. aea~.~.ng xa~~.an. V~,a the ax~.a1 glurtgers, a preaaure~, flt,id is row directed into tl~e b~.an3~ ~ of the hollow ,~xof fixed elt~ment . and put under ~.5 high pressure : on account crf the ~.nternal. ha.gh pressure present, the b~.ar~k ~ of the ho~.~c~w grofiled element 3.~s e~pai~ded., in the oourae of which ~,t abate fully a.ga~.net~
the da.e cavity 4 o'f the fi~rtrii~ng t~aa1 ~,. 1"he $~ce~~ura.
f~,u~,d is raw xelieved and d~,reatcd out of the now 20 finish-~~arm~d hQl~aew prc~filad e~..emerit., after which the ax~.a1 p.lunge~e are retxaated f~rarii the forming tac~l.
Fina~.~.~r, the latter to ap~r~ed and the. hollow prof~.~.ed eleme~xt id removed from the d~.a Cavity 4:.
29 ,~a~t ~xam that,., it ma.y by einpha~sixed ab this pQ~.r~t tY~at b~,~nk mater~.a~, can be gushed up axia~.xy by meaha at tl~g ax~.~,~: p~,un~erg duriae~ the inte~al h~:gh.~praa~ure fort~~.Mg'. fCx~ th~.s purpt~a~e, the irsvr~nt~,vn has th,e adnvide~a~ble ad,~ar~tage that tyke ~~rai.ghxeni~~ c~f~ the ~o front faces i~,, l~ ~t~,ke~s~ po~sibxe a hotn~~s~xac~us introi~~aat iota. of foxt~e ,b~;r fillip a~cia~, ~~.us~~~~e i~td t~,e fr~ri~liiyr~ reg~.r~n, to ~e 1~u'lged Csut3 t of the ~:riterrial high-pros~sure farm;irig pxc~eesHn a. ~aatdr w~t~,ch~ due to the ~aat th~.t this ae~nset~ueritl'y a.~roide~ uric'~e~i~rable fold
th$.s ~xsi~p~.a.ry ~~ibr~c~~.r~erit, the ble,i~l~ c~rid~ 9 ari~t~ ~.0 are trioimed: i~; such a way that tl~e~;x front ~~zces 12 end 13 ~s~r~iri ~iaraa~,e1 to area ar~ather. ~ri order eo permit the desired tri~ntning, the defrirma'~iai~ o~ the snda 9 aMd 10 ~0 wl~~.ah i.~ cauaad by the suukw~c~u~nt ac~iire~s~.on. i~pc~x.~t~.an ~.a. det,~rmined ~ae~o.ra the trtmm~.3~g c~p4r~,t,iori ire. a ~~a~ita-e7.ement computer ~ i~i,mu~,ation arid they, the ~ui~al~~,e trimming ~c~ritaur vr~t~ the ~utitala7~e. bew~~.~n~
acg~:e oc, is ~a~.au~:ated there~xdm~ T~,a 'blank ~, of th$
~5 h.ca~:l~w ~xa~~,~.ed e~~m~nt t~;~.m~ried 3n this way ~,e mow lr~~erted i~stc~ tl~e d~;e c~avlty a~ a~ the ~r~~~ting tool a~t~r i~h~,ah them latt~x i,~ ~~.a~ed, tin. aoGc~u~t, r~~ the o~M't~r r~g~.c~n ~ which, conet~~ot~ th~~ d~,~ da~t~,t~ g, the P4359~.5/Wd/~.~ : 7 b~.e~x~k 5 of the hollow profixed e~.eme~t is aomprase~sd duri~xg the axo~ing c~~t~ir~;tion of the formia~r ~too~, 2 by thc~ tCp part 2 and the bpttcim part 3 mo~xi.~,g toward ana anothex, ~k~~ Centex ac~mpre~aian ~.~, which aari be eeeri S from ~~.gure Z, which, showy tk~e forming tool ~7, i~a its d~.o~3ad atats, acts en ~ the ands 9 and 7,0 of the b.~.~,~k ~a of the ht~lldrn profi~,ed e~.~ment ire ~~u,ah s, v~ay that the front faaee ~.2 arid 13 of the b~,ank 5 are ~i~.epoeed per~aarsdiou~.arly to its lcir~gitudinal extent . 'fhe ax~.a1 16 ~rlun~era are then mn~ed tap tca the ex~.da 9 arid 1C of tha blank s of th~ hollow prd~iled eiemer~~, and aea~. the latter with a aoriiaa5. aea~.~.ng xa~~.an. V~,a the ax~.a1 glurtgers, a preaaure~, flt,id is row directed into tl~e b~.an3~ ~ of the hollow ,~xof fixed elt~ment . and put under ~.5 high pressure : on account crf the ~.nternal. ha.gh pressure present, the b~.ar~k ~ of the ho~.~c~w grofiled element 3.~s e~pai~ded., in the oourae of which ~,t abate fully a.ga~.net~
the da.e cavity 4 o'f the fi~rtrii~ng t~aa1 ~,. 1"he $~ce~~ura.
f~,u~,d is raw xelieved and d~,reatcd out of the now 20 finish-~~arm~d hQl~aew prc~filad e~..emerit., after which the ax~.a1 p.lunge~e are retxaated f~rarii the forming tac~l.
Fina~.~.~r, the latter to ap~r~ed and the. hollow prof~.~.ed eleme~xt id removed from the d~.a Cavity 4:.
29 ,~a~t ~xam that,., it ma.y by einpha~sixed ab this pQ~.r~t tY~at b~,~nk mater~.a~, can be gushed up axia~.xy by meaha at tl~g ax~.~,~: p~,un~erg duriae~ the inte~al h~:gh.~praa~ure fort~~.Mg'. fCx~ th~.s purpt~a~e, the irsvr~nt~,vn has th,e adnvide~a~ble ad,~ar~tage that tyke ~~rai.ghxeni~~ c~f~ the ~o front faces i~,, l~ ~t~,ke~s~ po~sibxe a hotn~~s~xac~us introi~~aat iota. of foxt~e ,b~;r fillip a~cia~, ~~.us~~~~e i~td t~,e fr~ri~liiyr~ reg~.r~n, to ~e 1~u'lged Csut3 t of the ~:riterrial high-pros~sure farm;irig pxc~eesHn a. ~aatdr w~t~,ch~ due to the ~aat th~.t this ae~nset~ueritl'y a.~roide~ uric'~e~i~rable fold
3~ faa~m~.ti,ons and materi~,~ th.iaker~;~:n~, makes apt ~~a~~tiona7. ar~nt~ibut~.ah, to they r~s5.~.aY~i~:~,ty of the j pro~sesv~,
Claims (7)
1. A method for producing a peripherally closed hollow profiled element by means of internal high-pressure forming, a hollow elongated blank being inserted into an internal high-pressure forming tool, the blank located completely inside the forming tool after the insertion being compressed in a region lying between its ends during the closing operation of the forming tool, after which the compressed blank is expanded into the final shape of the hollow profiled element by means of fluidic internal high pressure, characterized in that the ends (9, 10) of the blank (5) are trimmed before the compression operation, with a respective beveled front face (12, 13) being formed, and in that the trimming contour of the ends (9, 10) and the beveling angle (.alpha.) are selected in such a way that the ends (9, 10) are deformed by means of the compression operation in such a way that their front faces (12, 13) have an essentially plane form and assume a position which is as perpendicular as possible to the longitudinal extent of the blank (5).
2. The method as claimed in claim 1, characterized in that the trimming is effected in such a way that the front faces (12, 13) of the ends (9, 10) are beveled relative to the center axis (18) lying in the compression direction and running transversely to the longitudinal axis (11) of the blank (5).
3. The method as claimed in either of claims 1 and 2, characterized in that the blank ends (9, 10) are trimmed in such a way that their front faces (12, 13) remain arranged parallel to one another.
4. The method as claimed in one of claims 1 to 3, characterized in that the beveling angle (.alpha.) lies within a range of between 6° and 10°, preferably 8°.
5. The method as claimed in one of claims 1 to 4, characterized in that the end deformation occurring due to the subsequent compression operation is determined by a computer simulation before the trimming of the ends (9, 10) and then a trimming contour and a beveling angle (.alpha.) of the trimming to be affected is calculated therefrom for compensating for the deformation.
6. The method as claimed in one of claims 1 to 5, characterized in that the trimming of the ends (9, 10) is effected two-dimensionally.
7. The method as claimed in one of claims 1 to 5, characterized in that the trimming of the ends (9, 10) is effected by a three-dimensional contour cut.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10323738.0 | 2003-05-24 | ||
| DE10323738A DE10323738B3 (en) | 2003-05-24 | 2003-05-24 | Manufacturing closed hollow profile involves cutting semi-finished product ends to form angled ends before squeezing; contour, angle are selected so ends form essentially flat shape after squeezing |
| PCT/EP2004/004301 WO2004103602A1 (en) | 2003-05-24 | 2004-04-23 | Method for producing a peripherally closed hollow profiled element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2526774A1 true CA2526774A1 (en) | 2004-12-02 |
Family
ID=33305223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002526774A Abandoned CA2526774A1 (en) | 2003-05-24 | 2004-04-23 | Method for producing a peripherally closed hollow profiled element |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060248933A1 (en) |
| EP (1) | EP1628788B1 (en) |
| JP (1) | JP2006528075A (en) |
| CA (1) | CA2526774A1 (en) |
| DE (3) | DE10323738B3 (en) |
| WO (1) | WO2004103602A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201114521A (en) * | 2009-10-29 | 2011-05-01 | Metal Ind Res & Dev Ct | Method of forming and manufacturing U-shaped metal tube support frame |
| CN114653806B (en) * | 2022-03-01 | 2023-12-22 | 哈尔滨工业大学（威海） | Preforming method for high-strength steel reducing tubular part |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE645954A (en) * | 1963-03-28 | |||
| USRE33990E (en) * | 1987-05-06 | 1992-07-14 | Ti Corporate Services Limited | Method of forming box-like frame members |
| DE4320237C1 (en) * | 1993-06-18 | 1994-08-18 | Schaefer Maschbau Wilhelm | Method and device for producing a hollow item according to the internal high-pressure process |
| US5644829A (en) * | 1993-08-16 | 1997-07-08 | T I Corporate Services Limited | Method for expansion forming of tubing |
| JP3509217B2 (en) * | 1994-09-20 | 2004-03-22 | 株式会社日立製作所 | Forming method and forming apparatus for deformed cross-section pipe |
| US5557961A (en) * | 1995-11-13 | 1996-09-24 | General Motors Corporation | Hydroformed structural member with varied wall thickness |
| AU2170297A (en) * | 1997-03-27 | 1998-10-22 | Ti Corporate Services Limited | Method and apparatus for forming of tubing |
| US6016603A (en) * | 1997-05-12 | 2000-01-25 | Dana Corporation | Method of hydroforming a vehicle frame component |
| CN1081099C (en) * | 1997-07-18 | 2002-03-20 | 科西马国际公司 | Hydroforming of tubular blank having oval cross section and hydroforming apparatus |
| DE19813012C2 (en) * | 1998-03-25 | 2002-08-01 | Daimler Chrysler Ag | Process for producing a hollow body from a tubular blank by hydroforming |
| US6065502A (en) * | 1998-10-07 | 2000-05-23 | Cosma International Inc. | Method and apparatus for wrinkle-free hydroforming of angled tubular parts |
| JP3854812B2 (en) * | 2001-03-27 | 2006-12-06 | 新日本製鐵株式会社 | Strength members for automobiles |
| JP4207570B2 (en) * | 2001-05-22 | 2009-01-14 | 三菱自動車工業株式会社 | Hydroform molding method |
-
2003
- 2003-05-24 DE DE10323738A patent/DE10323738B3/en not_active Expired - Fee Related
-
2004
- 2004-04-23 WO PCT/EP2004/004301 patent/WO2004103602A1/en active IP Right Grant
- 2004-04-23 EP EP04729065A patent/EP1628788B1/en not_active Expired - Lifetime
- 2004-04-23 DE DE112004000725T patent/DE112004000725D2/en not_active Expired - Fee Related
- 2004-04-23 US US10/559,165 patent/US20060248933A1/en not_active Abandoned
- 2004-04-23 DE DE502004003973T patent/DE502004003973D1/en not_active Expired - Lifetime
- 2004-04-23 CA CA002526774A patent/CA2526774A1/en not_active Abandoned
- 2004-04-23 JP JP2006529701A patent/JP2006528075A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE502004003973D1 (en) | 2007-07-12 |
| DE112004000725D2 (en) | 2006-10-19 |
| JP2006528075A (en) | 2006-12-14 |
| EP1628788B1 (en) | 2007-05-30 |
| EP1628788A1 (en) | 2006-03-01 |
| WO2004103602A1 (en) | 2004-12-02 |
| US20060248933A1 (en) | 2006-11-09 |
| DE10323738B3 (en) | 2004-11-18 |
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