Title:
CYLINDER FORMING DEVICE AND CYLINDER FORMING METHOD
Document Type and Number:
WIPO Patent Application WO/2010/013688
Kind Code:
A1
Abstract:
A cylinder forming method comprises a forward rotating step of positioning auxiliary rolls (3) at a forming position and forwardly rotating a main roll (2) while the main roll is brought into contact with a work (W) between the first end (W1) and the center (W3), a conveying step of positioning the auxiliary rolls (3) at a retreating position and forwardly rotating the main roll (2) while the main roll is brought into contact with the work (W) between the center (W3) and the second end (W2), a reverse rotating step of positioning the auxiliary rolls (3) at a forming position and reversely rotating the main roll (2) while the main roll is brought into contact with the work (W) between the second end (W2) and the center (W3). These steps are performed in this order. The auxiliary rolls (3) are rotated in the direction reverse to the rotating direction of the main roll (2). The work (W) does not pass through the peripheral surface of the main roll (2) on the opposite side of the auxiliary rolls (3).
Inventors:
TANIGUCHI HIDESHI (JP)
Application Number:
PCT/JP2009/063378
Publication Date:
February 04, 2010
Filing Date:
July 28, 2009
Export Citation:
Assignee:
FUJI MACHINE WORKS CO LTD (JP)
TANIGUCHI HIDESHI (JP)
TANIGUCHI HIDESHI (JP)
International Classes:
B21D5/14
Foreign References:
| JPH0333414B2 | 1991-05-17 | |||
| JPS5216987B2 | 1977-05-12 | |||
| JPH034283B2 | 1991-01-22 | |||
| JPS61502175A | 1986-10-02 | |||
| JP2004034038A | 2004-02-05 | |||
| JP2004130354A | 2004-04-30 |
Other References:
See also references of EP 2332666A4
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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