Title:
MACHINE TOOL FOR MACHINING SCREW ROTOR AND METHOD OF MACHINING SCREW ROTOR USING SAME
Document Type and Number:
WIPO Patent Application WO/2011/096274
Kind Code:
A1
Abstract:
Disclosed is a machine tool for machining screw rotors, capable of machining a large number of high-precision screw rotors having variable lead and tilt angles at low cost in a short time without requiring enormous machining workload and thereby capable of supplying a large number of screw-type vacuum pump at low cost. Also disclosed is a method of machining screw rotors using the same. Specifically, a machine tool (200) for machining screw rotors comprises a spindle (211); a headstock (210); a tool stock (220); a tool (221); a C-axis serving as the rotational axis of the spindle (211); X-, Z-, and Y-axes serving as moving directions of the tool stock (220); an A-axis for adjusting the rake angle of the tool (221) with respect to a workpiece (W) to be machined by rotating the tool (221) in accordance with the lead angle of a screw rotor (120); and a numerical control means (230). Also disclosed is a method of machining screw rotors using the same.
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Inventors:
OHMI, Tadahiro (1-1 Katahira 2-chome, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
大見 忠弘 (〒77 宮城県仙台市青葉区片平二丁目１番１号 国立大学法人東北大学内 Miyagi, 〒9808577, JP)
AKUTSU, Isao (1-1 Katahira 2-chome, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
大見 忠弘 (〒77 宮城県仙台市青葉区片平二丁目１番１号 国立大学法人東北大学内 Miyagi, 〒9808577, JP)
AKUTSU, Isao (1-1 Katahira 2-chome, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
Application Number:
JP2011/050855
Publication Date:
August 11, 2011
Filing Date:
January 19, 2011
Export Citation:
Assignee:
NATIONAL UNIVERSITY CORPORATION TOHOKU UNIVERSITY (1-1 Katahira 2-chome, Aoba-ku Sendai-sh, Miyagi 77, 〒9808577, JP)
国立大学法人東北大学 (〒77 宮城県仙台市青葉区片平二丁目１番１号 Miyagi, 〒9808577, JP)
IIZUKA & CO., LTD. (15-16, Handa 3-chome Kashiwazaki-sh, Niigata 12, 〒9450812, JP)
株式会社飯塚鉄工所 (〒12 新潟県柏崎市半田３丁目１５番１６号 Niigata, 〒9450812, JP)
OHMI, Tadahiro (1-1 Katahira 2-chome, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
国立大学法人東北大学 (〒77 宮城県仙台市青葉区片平二丁目１番１号 Miyagi, 〒9808577, JP)
IIZUKA & CO., LTD. (15-16, Handa 3-chome Kashiwazaki-sh, Niigata 12, 〒9450812, JP)
株式会社飯塚鉄工所 (〒12 新潟県柏崎市半田３丁目１５番１６号 Niigata, 〒9450812, JP)
OHMI, Tadahiro (1-1 Katahira 2-chome, Aoba-ku, Sendai-sh, Miyagi 77, 〒9808577, JP)
International Classes:
B23F15/08; B23F23/12; F04C25/02
Attorney, Agent or Firm:
IKEDA, Noriyasu et al. (Hibiya Daibiru Bldg, 2-2 Uchisaiwaicho 1-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
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Claims: