Available online at ScienceDirect. Procedia Engineering 150 (2016 )

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1 Availabl onlin at ScincDirct Procdia Enginring 150 (2016 ) Intrnational Confrnc on Industrial Enginring ICIE 2016 Controlld Forming of Machin Componnts Oprating Charactristics A.S. Vasiliv a * a Moscow Stat Tchnical Univrsit Namd aftr N.E. Bauman 2-a Baumansa str. 5 Moscow Th Russian Fdration Abstract Th main tas of machin production is assuring thir oprating qualit dirctl dpnding on componnts oprating charactristics. Charactristics assuring th componnts prforming st functions undr st oprating conditions and assuring st componnts lif ar considrd as oprating charactristics of sparat surfacs and whol componnts. Th common mthod of nginring support of th oprating charactristics is basd on ncssit of assuring crtain nginring and manufacturing qualit paramtrs during production basd on th assumption that th warrant raching st oprating charactristics. It is alrad provd that diffrnt sts and squncs of procss mthods can lad to similar componnts qualit nginring and manufacturing paramtrs but to significantl diffrnt oprating charactristics. Th mthod of procss dsign basd on suprimposing procss impact rsults on production subjct has run its cours. Suggstd concpt of controlld forming of goods (in particular componnts) charactristics considrs thir rachd qualit as a rsult of transforming its sparat paramtrs taing into account oprativ impact on production objct as wll as succssion and mutual influnc of forming faturs. In ordr to dscrib th transformation a mathmatical tool allowing dtrministic stochastic modling of such transformation was word out. Th prsnt wor includs using th concpt for controlld forming of st oprating charactristics of goods using componnts as xampl. Th prspctiv is to form tchnological solutions 100% assuring dirctl st oprating charactristics of oprating surfacs or th whol componnt. It is dmonstratd that th ncssar and sufficint lvl of warrantd assuring st oprating charactristics should b limitd and should ta into account influnc of th mrgnc of th tchnological procss as a sstm on rsults of th lmntar solutions prformd in such sstm Publishd Th Authors. b Elsvir Publishd Ltd. b This Elsvir is an opn Ltd. accss articl undr th CC BY-NC-ND licns ( Pr-rviw undr rsponsibilit ofth organizing committ of ICIE Pr-rviw undr rsponsibilit of th organizing committ of ICIE 2016 Kwords: tchnolog; componnt; oprating charactristic; forming; assuring; dirctivit. * Corrsponding author. Tl.: addrss: vas@bmstu.ru Publishd b Elsvir Ltd. This is an opn accss articl undr th CC BY-NC-ND licns ( Pr-rviw undr rsponsibilit of th organizing committ of ICIE 2016 doi: /j.prong

2 976 A.S. Vasiliv / Procdia Enginring 150 ( 2016 ) Introduction An machin componnt is an ordrd complx of oprating and conncting surfacs. Oprating surfacs assur th componnt fulfilling st functions during product oprating conncting surfacs orint oprating surfacs in an appropriat wa and limit th componnt as a solid bod. Oprating charactristics (OC) of sparat oprating surfacs and componnts in whol charactristics assuring componnt prforming st functions undr st rsourc and oprating conditions. Corrctl dtrmind during dsigning and tchnologicall assurd OC warrant high oprating qualit of componnts and whol machin. Mor svr rquirmnts on machins oprating qualit rasond b ncssit of nhancing comptitivnss of such machins mad OC nginring support mthod changing quit ssntial. Traditional OC nginring support mthod is rasond b ncssit of forming tchnological solutions (TS) warranting raching st valus of componnts nginring and manufacturing qualit paramtrs which is idntifid with raching st OC. It is dmonstratd that OC of th oprating surfacs and whol componnts ar dtrmind not onl b rachd valus of th aggrgat of thir nginring and manufacturing qualit paramtrs but also b how ths valus wr rachd [1]. Diffrnt sts and squncs of procss mthods can lad to similar valus of componnts qualit nginring and manufacturing paramtrs but to significantl diffrnt oprating charactristics. Problm of assuring st OC of th goods alwas was important for machin building industr. Signatur fatur of traditional approachs to dtrmining and forcasting of th manufacturd machins building products qualit is in using suprposition principl according to which an of acting tchnological factors acts indpndntl from othr factors and thir combind action rsult is dtrmind b thir partial sum prsntd in on form or anothr [2 3]. Tchnological sstms ar multilind production objcts ar charactrizd b nonlinarit inconvrtibilit and disquilibrium. Implmnting th suprposition principl convrts multilind intractions in th procss sstms into singllind ignoring mutual influnc of tchnological factors [4]. Advancing of rquirmnts on manufacturing qualit and OC of machins componnts mas suprposition principl basd mthods of qualit dtrmining and forcasting of a littl us as ffct of mutual factors influncing is comparabl with rsults of thir dirct influnc. Procss of goods faturs changing should b considrd as aggrgat of intracting procsss spciall of faturs changing and saving [5]. Indicatd was rflctd in original concpt of controlld forming of machin building industr products charactristics. 2. Controlld forming of products charactristics Controlld forming of products (for xampl of componnts) charactristics concpt is basd on following main provisions [5 8]: componnt qualit is formd during its tchnological prhistor. Man componnt qualit paramtrs rsult from its prhistor; an tchnological and rlatd to its influnc on th wor pic changs all qualit paramtrs of th wor pic; whn changing an qualit paramtr changs all othr wor pic qualit paramtrs; componnt qualit is formd b tchnological nvironmnt intracting with th componnt at ach stag of production. Main tas of controlld componnt qualit (charactristics) forming: to dtrmin tchnological nvironmnt optimal from th point of viw of transforming th charactristics undr nown initial and final production subjct faturs. W suggst dscribing production subjct faturs transforming (on th xampl of th componnt) b mans of th modl [5 6]: K S K K (1) Ki j * i i i il i whr Ki j 1 i j componnt producing accordingl; j j j 1 j* K column-vctors of th production objct qualit paramtrs valus at (j-1) and j stags of th S i matrix of oprativ transforming of th production objct qualit j paramtrs at j stag of th componnt manufacturing procss; matrix of mutual influnc of th production il

3 A.S. Vasiliv / Procdia Enginring 150 (2016 ) objct faturs;k i j * column-vctor of th production objct qualit paramtrs valus formd prior to stag j but influncing qualit paramtrs forming at stag j of th componnt manufacturing procss. First summand in (1) charactrizs influnc of oprativ production subjct qualit transformation (tchnological impact) on final componnt qualit; scond summand charactrizs influnc of th tchnological hritag and mutual impact of forming paramtrs [6]. It is provd [6] that shar of tchnological hritag and mutual influnc of forming faturs in final componnt qualit paramtrs is qual to: whn assuring surfac siz accurac according to IT % whn assuring surfac siz accurac according to IT3 up to 40 50%. Thr was word out a mathmatical tool allowing dtrministic and stochastic modling of goods faturs transformation [9] allowing succssful implmnting suggstd concpt whn forming th goods OC [10 12]. 3. Controlld forming of products oprating charactristics Th prspctiv is to form tchnological solutions 100% assuring dirctl st oprating charactristics of oprating surfacs or th whol componnt [12]. Implmnting of such approach is rstraind b its not sufficint mthodical dvlopmnt. Each OC can b assignd with a paramtr quantitizing it for xampl war rsistanc can b charactrizd b waring intnsit (rlativ war). Condition of assuring th production objct OC can b prsntd as follows 1 K; P P or P P (2) whr P valu of paramtr charactrizing -th OC actuall rachd whn manufacturing th componnt; P limit valu of th sam paramtr st b manufactur for assuring th componnt rsourc; K quantit of th componnt rgulatd OC. ">" smbol corrsponds with maximizd smbol "<" corrsponds with minimizd paramtrs valus. It is possibl to valuat lvl of assuring of ach of th OC (U ): P if P max U ; P (3) P if P min U. P If 1 K; U 1 U 1 than lvl of assuring th whol aggrgat of th componnt OC (U): K 1 U U. (4) If for on part of th OC U 1 and for anothr U 1 than U valu is not nough to full charactriz total OC lvl so it is mor rasonabl to valuat lvl of assuring for ach of th dtrmind OC sparatl or onl for on of thm (dominating charactristic). U 1 corrsponds with warrantd componnt OC assuring but warrant lvl charactrizd b assuring lvl valuating should b rasond. It is most rasonabl that whn dsigning a machin its componnts will b harmonizd taing into account its oprating rsourc rat. This is oftn impossibl. This fact is provd b prsnc of quic-waring componnts practicall in vr machin. Ncssar and appropriat lvl of assuring at last dominating OC can b dtrmind as condition of warrantd assuring th OC undr balancing tchnical and conomical principls of dsigning taing into account st machin rsourc and comptitivnss. Lts illustrat this b an xampl of OC assuring for which it is prfrabl that P max. Limit valu of charactrizing it paramtr [P ] st b dsignr corrsponds with rliabl opratd componnt. Dsignr usuall provids for allowabl rang of paramtr valu changing (loss) P. Nominal componnt rsourc (T ) pr discussd OC: P ( T) p (5) p

4 978 A.S. Vasiliv / Procdia Enginring 150 ( 2016 ) whr p nominal ffctivnss loss pr discussd OC. ( U ) min valu dtrmins minimal limit of this OC assuring lvl corrsponding with componnt rgular opration. Dsign rsourc of th componnt in trms of this OC will not b assurd in cas actual ffctivnss loss rat will b highr than dsignd which is vr difficult to stimat (vn approximatl) during machin dsigning. This lads to ncssit of warrantd assuring th OC and stablishing its rasond limiting lvl. On of th most obvious was of assuring th OS is finding tchnological mthods thir squncs and combinations as wll as th tchnological solutions of highr lvls 100% assuring spcific OS. This rquirs xprimntal vrification of th OC vn for sparat oprating surfacs manufacturd as a rsult of th tchnological solution ralization. It is ncssar to rcord th tchnological solution paramtrs and oprating conditions of th controlld componnts which allows forming appropriat data bans rquird whn forming nw tchnological solutions. In particular rangd b fficinc and slctd squncs of tchnological mthods can b considrd as an informational basis for snthsis of routing tchnological procsss [13]. Elmntar routing procsss of manufacturing main (oprating) surfacs in tchnological procsss of componnts manufacturing ar ralizd not concntratd in sparat oprations but onl in som of thm on diffrnt stags of th tchnological procss. Indicatd lmntar procsss ar disintgratd and in th form of sparat oprations (or vn switchs) fit into gnral structur of th routing tchnological procss. It is possibl that lmntar routing procss rliabl assuring th OC undr concntratd ralization will not assur th sam whn ralizd in th frams of th routd tchnological procss of componnt manufacturing considrd as an intgral sstm in particular bcaus of mrgnc in th form of tchnological hritag. With U 1 this will invitabl lad to dcrasing of th componnt actual rsourc. Rang of paramtr P changing corrsponding to warrantd assuring th OC P can b valuatd according to formula: P P P r r c (6) whr P P c paramtr changing compnsating th mrgnc of th tchnological procss as a sstm; P changing of paramtr dtrmind b dsird lvl of th machin comptitivnss. Actual componnt rsourc ( T ) b discussd OC: P P P c ( T ). (7) p Undr accurac nough for practical calculations w can considr [6]: P P (8) c Whr cofficint taing into account ngativ ffct of th mrgnc of th tchnological procss as a sstm on forming valu of th paramtr charactrizing th OC: P ( T) f (1 )( T) nf (9) f whr ( T ) actual componnt rsourc dtrmind b nominall st OC rsrv. nf Additional warrantis if th OC charactrizd b last summand in (9) ma componnt manufacturing mor xpnsiv and should b introducd and assurd tchnologicall onl whn ncssar. Whn supposing tchnological similarit of goods A and B w'll compar comptitivnss paramtrs of similar goods A and B b "usful ffct/xpnss" rlation [14]: ( T) f ( T) f K ; K Z Z (10) whr ( T ) ( T ) actual rsourcs corrsponding componnts of goods A and B; Z Z xpnss on f f componnts manufacturing and opration. Whn 0 qualit of K and K or: P K K othrwis it is possibl to hav approximat A B A

5 A.S. Vasiliv / Procdia Enginring 150 (2016 ) ( T) f ( T) f ; Z Z ( T ) K Z. f Introducing (9) into (11) givs that for assuring good A comptitivnss it is ncssar to: P A KZ B A (1 )( T) nfa. (12) VfA Aftr stting ncssar assumptions (12) lads to valu P dtrmining limit of warrantd assuring th OC A according to (6). Dscribd approach can b usd whn valuating and analzing rsults of using combind mthods of machining and for dsigning tchnological complxs [15 16]. Its formalizd natur assurs in particular nhancing advantags of paralll dsigning using informational tchnologis [17]. 4. Conclusions 1. Formd tchnological solutions should 100 % assur xplicit oprating charactristics of th componnts. 2. Ncssar and sufficint lvl of warrantd assuring st oprating charactristics should b limitd and should ta into account: influnc of th mrgnc of th tchnological procss as a sstm on rsults of th lmntar solutions ralizd in such sstm; ncssit of th good comptitivnss support. Rfrncs [1] A.G. Suslov V.P. Fdorov Tchnological Assuring and Enhancing Oprating Charactristics of Componnts and thir Unions Mashinostroni Moscow [2] K.S. Kolsniov G.F. Balandin A.M. Dal'si Tchnological Basis of Assuring Machins Qualit Mashinostroni Moscow [3] N.D. Kuzntsov V.I. Tsitlin V.I. Volov Tchnological Mthods of Enhancing Machins Componnts Rliabilit Mashinostroni Moscow [4] A.S. Vasiliv A.M. Dal'si S.A. Klimno Tchnological Basis of th Machins Qualit Control Mashinostroni Moscow [5] A.M. Dal'si B.M. Bazrov A.S. Vasil'v Tchnological Inhritanc in Machin Building Production MAI Moscow [6] A.S. Vasiliv A.M. Dal'si Yu.M. Zolotarvsi A.I. Kondaov Controlld Forming of Machin Building Goods Faturs Forming Mashinostroni Moscow [7] M. Khiftz Dsign dcisions during modling transfr of qualit paramtrs in lif ccl of machin dtails Procdings on th 11 Intrnational scintific confrnc on advancd production tchnologis Novi Sad Srbia 2012 pp [8] A. Vasil'v Formation of qualit paramtrs in lif ccl of machin dtails on th basis of tchnological inhritanc Procdings on th 11 Intrnational scintific confrnc on advancd production tchnologis Novi Sad Srbia 2012 pp [9] A.S. Vasiliv Statistic Modl of Transforming Goods Charactristics in Tchnological Environmnts MSTU Bulltin: Machin Construction. 4 (1997) [10] P.I. Yashchritsin M.L. Khifts S.A. Klimno A.S. Vasiliv Tchnological and Oprational Hritag of Qualit Paramtrs in Machin Building Industr Products Lif Ccls Rport of NAS of Blorussia. 49 (2005) [11] A.S. Vasiliv A.I. Kondaov S.A. Klimno M.L. Khifts V.A. Gaio Tchnological Control ovr Hritag of th Oprational Charactristics of th Hardnd Surfacs Qualit Hardning Mthods and Covrs. 1 (2011) [12] A.I. Kondaov Tchnological Solutions and Warrantd Assuring of Machins Componnts Oprating Charactristics Rfrnc Boo Enginring Magazin. 3 (2009) [13] A.I. Kondaov Forming Innovativ Basis for Dsigning Routd Procsss of Componnts Production Rfrnc Boo Enginring Magazin. 3 (2001) [14] A.I. Kondaov A.V. Kharitonov Quantitativ Critria of th Machin Building Industr Product Lif Ccl Rfrnc Boo Enginring Magazin. 1 (2004) 5 9. [15] M. Khiftz Analsis and dsign of highl fficint mthods of tratmnt Procdings on th 34 Intrnational confrnc on production nginring Nis Srbia 2011 pp [16] V. Borodavo Dsign of tchnological complxs for highl fficint tratmnt Procdings on th 34 Intrnational confrnc on production nginring Nis Srbia 2011 pp [17] Manufacturing Tchnologis for Machins of th Futur Springr Vrlag Brlin (11)