EP 1743103 A1 20070117 - BALL ELEMENT FOR TWO-PART BALL PIVOT AND CORRESPONDING METHOD OF PRODUCTION
Title (en)
BALL ELEMENT FOR TWO-PART BALL PIVOT AND CORRESPONDING METHOD OF PRODUCTION
Title (de)
KUGELELEMENT FÜR ZWEITEILIGEN KUGELZAPFEN UND HERSTELLUNGSVERFAHREN
Title (fr)
ELEMENT ROTULE DESTINE A DES PIVOTS A ROTULES EN DEUX PARTIES ET SON PROCEDE DE PRODUCTION
Publication
Application
Priority
- DE 2005000823 W 20050502
- DE 102004022248 A 20040504
Abstract (en)
[origin: WO2005106263A1] The invention relates to a method for producing balls, especially for ball pivots, and to a ball element for two-part ball pivots. The balls according to the invention are produced by cold extrusion and subsequent grinding, using a micro-alloy carbon-manganese steel. The use of micro-alloy carbon-manganese steel allows to obtain balls having excellent strength and hardness already due to the cold shaping. It is not necessary to use a tempering step as required for the production of generic balls, which allows the use of less expensive materials, thereby considerably reducing production costs. The invention allows for a simple and inexpensive method for producing balls for two-part ball pivots while maintaining and/or increasing surface and material quality as well as strength and wear resistance. As a result, the complexity of the method is reduced and the problem of dents which can occur on the ball surfaces during tempering is removed.
IPC 8 full level
F16C 11/06 (2006.01); B21K 1/02 (2006.01); B21K 1/76 (2006.01); C21D 7/02 (2006.01); C22C 38/04 (2006.01); C21D 9/36 (2006.01)
CPC (source: EP KR US)
B21K 1/02 (2013.01 - EP US); B21K 1/762 (2013.01 - EP US); C21D 7/02 (2013.01 - KR); C22C 38/04 (2013.01 - KR); F16C 11/06 (2013.01 - KR); F16C 11/0609 (2013.01 - EP US); F16C 23/045 (2013.01 - EP US); F16C 2204/62 (2013.01 - EP US); F16C 2204/74 (2013.01 - EP US); F16C 2220/48 (2013.01 - EP US); Y10T 29/49664 (2015.01 - EP US)
Citation (search report)
See references of WO 2005106263A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005106263 A1 20051110; BR PI0510575 A 20071120; BR PI0510575 B1 20180313; CN 1950619 A 20070418; CN 1950619 B 20100901; DE 102004022248 A1 20051215; DE 102004022248 B4 20070614; EP 1743103 A1 20070117; JP 2007538203 A 20071227; KR 101157685 B1 20120620; KR 20070012819 A 20070129; MX PA06012713 A 20070214; US 2007211972 A1 20070913
DOCDB simple family (application)
DE 2005000823 W 20050502; BR PI0510575 A 20050502; CN 200580014259 A 20050502; DE 102004022248 A 20040504; EP 05747383 A 20050502; JP 2007511851 A 20050502; KR 20067023368 A 20050502; MX PA06012713 A 20050502; US 56864005 A 20050502