EP 2528702 A1 20121205 - METHODS OF MANUFACTURING A RESILIENT RAIL CLIP
Title (en)
METHODS OF MANUFACTURING A RESILIENT RAIL CLIP
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER NACHGIEBIGEN SCHIENENKLEMME
Title (fr)
PROCÉDÉS DE FABRICATION D'UN SERRE-RAIL ÉLASTIQUE
Publication
Application
Priority
- GB 201001301 A 20100127
- EP 2010068893 W 20101203
Abstract (en)
[origin: GB2477282A] The method comprises bending a rod into a predetermined shape and then applying a cold setting process to induce a predetermined amount of permanent set (S). One cold setting process comprises applying a first load (Fo) to part of the bent rod so as to cause a first amount of deflection, which first load (Fo) is a predetermined load having a value equal to or greater than that required to reach the yield point of metal having the highest hardness value in the range, measuring the first amount of deflection (dx) of the part of the bent rod achieved by applying the predetermined first load (Fo), determining, on the basis of the measured deflection amount (dx), either (i) a second load (Fo + AFx), which, when applied to the bent rod part, will cause it to acquire the predetermined amount of permanent set (S), or (ii) a second amount of deflection (dx + Adx) of the bent rod part required in order to bring about the predetermined amount of permanent set (S), and applying the second load (Fo+ AFx ) to the bent rod part or deflecting it by the determined second amount of deflection (dx + Adx). An alternative cold setting process comprises deflecting part of the bent rod by a predetermined first amount (do) by applying a first load (Fx) having a value equal to or greater than that required to reach the yield point of metal having the highest hardness value in the range, measuring the amount of the first load (Fx) required to achieve the predetermined first amount of deflection (do), determining, on the basis of the measured load, either (i) a second deflection amount (do + Adx) required in order to bring about in the bent rod the predetermined amount of permanent set (S), or (ii) a second load (Fx + LFx), which, when applied to the bent rod part, will cause it to acquire the predetermined amount of permanent set (S), and deflecting the bent rod part by the determined second deflection amount (d) + Adx) or applying the determined second load (Fx + LIFx) to the bent rod part.
IPC 8 full level
B21D 53/36 (2006.01); E01B 9/30 (2006.01)
CPC (source: EP GB KR US)
B21D 53/36 (2013.01 - EP KR US); E01B 9/30 (2013.01 - KR); E01B 9/303 (2013.01 - EP GB KR US)
Citation (search report)
See references of WO 2011091893A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
GB 201001301 D0 20100310; GB 2477282 A 20110803; AU 2010344043 A1 20120816; AU 2010344043 B2 20140717; BR 112012017549 A2 20160628; BR 112012017549 B1 20200422; CA 2787694 A1 20110804; CA 2787694 C 20170207; CN 102712028 A 20121003; CN 102712028 B 20141105; DK 2528702 T3 20150526; EP 2528702 A1 20121205; EP 2528702 B1 20150218; ES 2531309 T3 20150312; JP 2013518196 A 20130520; JP 5677466 B2 20150225; KR 101779394 B1 20170918; KR 20120116006 A 20121019; MX 2012008685 A 20120823; PL 2528702 T3 20150731; PT 2528702 E 20150227; RU 2012136430 A 20140310; RU 2543588 C2 20150310; SI 2528702 T1 20150529; US 2013074559 A1 20130328; WO 2011091893 A1 20110804; ZA 201205545 B 20130424
DOCDB simple family (application)
GB 201001301 A 20100127; AU 2010344043 A 20101203; BR 112012017549 A 20101203; CA 2787694 A 20101203; CN 201080062326 A 20101203; DK 10796315 T 20101203; EP 10796315 A 20101203; EP 2010068893 W 20101203; ES 10796315 T 20101203; JP 2012550340 A 20101203; KR 20127022098 A 20101203; MX 2012008685 A 20101203; PL 10796315 T 20101203; PT 10796315 T 20101203; RU 2012136430 A 20101203; SI 201030911 T 20101203; US 201013520522 A 20101203; ZA 201205545 A 20120723