Snmek 1
Anglicky v odbornch pedmtech"Support of teaching technical subjects in EnglishTutorial: Engineering technology
Topic: Rivet joints
Prepared by: Ing. Jaroslav Hbl
Projekt Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002je spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk republiky.
RIVET JOINTSRivet joint is non-dismountable joint with the shape contact. It is made by permanent rivet deformation or one of connected parts. Rivet joint is not capable to provide exact position of connected parts. Presently, rivet joints are mostly replaced by welded joints. They are mainly used in such areas where it is not possible to apply other technologies (e.g. aviation)
TYPES OF RIVETS
a) With semi-ball shaped head, b) with flat semi-ball shaped head,e) With flat head, f) drilled, g) boilers, h) shipping,closed, l) split, m) hollow with mandrel
DIRECT RIVETINGDirect riveting one of the components is riveted in another.
INDIRECT RIVETINGIndirect riveting for joining parts is used independent riveting connection.
TYPES OF RIVET JOINTSAccording to the number of cross-sections, where rivet cutting can happen, rivet joints are divided into: - one-cutting- two-cutting
MANUAL RIVETING
Closing headChecknutClosing little headSupporting headRivet shankSupporting little headRivet lengthAllowanceGripping lengthManual riveting
RIVETS WITH MANDREL
1 Mandrel with rivet2 Fixed to riveting pliers3 Mandrel stretches rivet and it tears4 Rivet is seated
Calculation of rivet joint
Choice of rivet diameter:d = 2s for s 12 mm, d = s + 10 for s>12
One-cutting rivets:Slide: F n AD,s where A = . d2 / 4Imprint: F n A pD where A = d . s
Two-cutting rivets:Slide: F n 2AD,s where A = . d2 / 4Imprint: F n A pD where A = d . s
LiteratureStroje a zazen I, J. Doleek, P. Gajdo, V. Novk Strojnictv I, J. Doleek, Z. HoloubekStrojnictv II, J. Doleek, Z. HoloubekModern strojrenstv, Josef Dillinger a kolektiv
Write down the types of rivets.
What is the difference between direct and indirect riveting.
Draw the rivet with mandrel.
