Title:
【発明の名称】常温圧延金属成形物及びその成形方法並びにその成形装置
Document Type and Number:
Japanese Patent JP2853123
Kind Code:
B2
Abstract:
Equipment to produce shaped metal strip from initially flat stock comprises a number of roll forming stands arranged in tandem and preferably operating at room temp. The rolls are frustoconical in shape, and each stand has two upper rolls working against the inclined surfaces of a single lower roll. This roll disposition deforms the strip by a shearing action along the inclined surfaces, and produces a channel-shaped cross-section. The shearing action reduces the thickness of the inclined portions of the strip by an amt. which depends upon the cone angle of the rolls. If T1 denotes initial strip thickness, T2 denotes deformed strip thickness and A denotes the cone angle (usually about 30 degrees), the preferred minimum value of T2 is defined by the relationship T2 = T1 sinA.
Inventors:
BOSURU JOOJI EFU
KERII PATORITSUKU EMU
ARUBAREZU DENISU EI
SOA GEIRU
HOSEBAA JOSEFU EI
KERII PATORITSUKU EMU
ARUBAREZU DENISU EI
SOA GEIRU
HOSEBAA JOSEFU EI
Application Number:
JP50195887A
Publication Date:
February 03, 1999
Filing Date:
March 04, 1987
Export Citation:
Assignee:
DON INC
International Classes:
E04C2/08; B21B1/08; B21B15/00; B21B15/02; B21D5/08; B21D5/14; B21D13/02; B21D13/04; E04C3/04; B21B; (IPC1-7): B21D5/08
Domestic Patent References:
| JP59167119U |
Other References:
【文献】米国特許3792602(US,A)
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)