Title:
METHOD FOR MANUFACTURING ROLLER
Document Type and Number:
WIPO Patent Application WO/2011/093215
Kind Code:
A1
Abstract:
Provided is a method for manufacturing a roller, which improves the efficiency of grinding performed on a roller end surface of a work piece for a tapered roller or a convex roller, and expands the range of work pieces that can be processed with sufficient precision. A work piece (1) is fixed by jaws (14) of a retractable mechanical chuck (13) provided in a headstock (11) of a five-axis control machining center. The apparent outer diameter of the work piece (1) is made larger by using a jig (15). A clamping surface (14a) of the jaws (14) and a receiving surface (15a) of the jig (15) are shaped using a machine. A cutting tool (16) is mounted on a main spindle (12) by an automatic tool changer. The work piece (1) is rotated about a C-axis to cut the machining-side edge section of the work piece (1) using the cutting tool (16) in such a way that the machining-side edge section of the work piece (1) has a shape close to a spherical surface (S) which is the target shape for grinding. A grindstone (17) is mounted on the main spindle (12) using the automatic tool changer. The position/orientation of the grindstone (17) with respect to the work piece (1) is set by means of five-axis control in terms of the relationship between a predetermined tilt angle (α) and a predetermined offset amount (e) etc. corresponding to the grinding process. The work piece (1) is grinded to have the spherical surface (S) by cutting with the grindstone (17) performed by means of Z-axial feeding.
Inventors:
HIGASHI Kohei (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
東 晃平 (〒37 静岡県磐田市東貝塚１５７８番地 ＮＴＮ株式会社内 Shizuoka, 〒4380037, JP)
東 晃平 (〒37 静岡県磐田市東貝塚１５７８番地 ＮＴＮ株式会社内 Shizuoka, 〒4380037, JP)
Application Number:
JP2011/051055
Publication Date:
August 04, 2011
Filing Date:
January 21, 2011
Export Citation:
Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 〒5500003, JP)
HIGASHI Kohei (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 〒5500003, JP)
HIGASHI Kohei (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
International Classes:
B24B7/16; B23B5/00; B23P15/00; B24B9/00; B24B41/06
Attorney, Agent or Firm:
KAMADA Bunji et al. (18-12, Nipponbashi 1-chome Chuo-ku, Osaka-sh, Osaka 73, 〒5420073, JP)
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Claims: