(19)
(11)EP 3 569 325 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
27.11.2019 Bulletin 2019/48

(43)Date of publication A2:
20.11.2019 Bulletin 2019/47

(21)Application number: 19180343.6

(22)Date of filing:  22.11.2016
(51)Int. Cl.: 
B21D 15/04  (2006.01)
B21D 17/02  (2006.01)
B21H 1/20  (2006.01)
B21H 1/18  (2006.01)
B21D 15/06  (2006.01)
B21D 17/04  (2006.01)
B21H 1/22  (2006.01)
B21H 7/18  (2006.01)
(84)Designated Contracting States:
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

(30)Priority: 30.11.2015 US 201562260922 P
07.07.2016 US 201662359395 P
19.07.2016 US 201662363892 P
16.09.2016 US 201662395747 P

(62)Application number of the earlier application in accordance with Art. 76 EPC:
16871289.1 / 3383563

(71)Applicant: Victaulic Company
Easton, PA 18040 (US)

(72)Inventor:
  • DOLE, Douglas, R.
    Whitehouse Station, NJ New Jersey 08889 (US)

(74)Representative: De Anna, Pier Luigi 
DEANNA-PATENT c/o Meissner Bolte Widenmayerstrasse 47
80538 München
80538 München (DE)

  


(54)CAM GROOVING MACHINE


(57) A device for cold working pipe elements has two or more cams, each having a gear which meshes with a pinion to turn all of the cams. Each cam has a cam surface with a region of increasing radius and may have a region of constant radius extending around a cam body. Each cam also has a traction surface extending around a cam body. A discontinuity in each cam surface is aligned with a gap in the traction surface of each cam. The discontinuities and gaps provide clearance for insertion and removal of the pipe element between the cams to form a circumferential groove when the cams are rotated.