Title:
DEFLECTION CORRECTION DEVICE FOR RAM
Document Type and Number:
WIPO Patent Application WO/2011/080820
Kind Code:
A1
Abstract:
Disclosed is a machine tool that is provided with a ram and that, by means of a device that does not require balance weights for weight balancing and that has a simple structure along with an inexpensive device cost, can correct mispositioning of the end of a primary shaft unit arising as a result of feeding out the ram. The machine tool—which is provided with a saddle (13) that moves vertically under the guidance of a column (14), and a ram (1) that contains the primary shaft unit (15) and that is fit to said saddle (13) slidably in the horizontal direction—is characterized by being provided with a control means (10) that: supports the aforementioned saddle (13) on the aforementioned column (14) using a plurality of hydrostatic bearings along the lengthwise direction of the aforementioned column (14); and corrects mispositioning of the aforementioned primary shaft unit (15) by means of the inclination of the saddle (13) that complies with the control of applied hydraulic pressure by controlling the hydraulic pressure of the aforementioned hydrostatic bearings (2a) in accordance with the vertical displacement of the ram in a manner so as to alter the hydraulic pressure of said hydrostatic bearings (2a), maintaining the straightness of the direction of the primary shaft of the aforementioned ram (1).
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Inventors:
HORI, Takumi (C/O TAKASAGO Research & Development Center, MITSUBISHI HEAVY INDUSTRIES LTD., 1-1, Arai-cho Shinhama 2-chome, Takasago-sh, Hyogo 86, 〒6768686, JP)
堀 匠 (〒86 兵庫県高砂市荒井町新浜２丁目１番１号 三菱重工業株式会社高砂研究所内 Hyogo, 〒6768686, JP)
FURUTATE, Satoshi (C/O Machine Tool Division, MITSUBISHI HEAVY INDUSTRIES LTD., 130, Roku-jizo, Ritto-sh, Shiga 80, 〒5203080, JP)
堀 匠 (〒86 兵庫県高砂市荒井町新浜２丁目１番１号 三菱重工業株式会社高砂研究所内 Hyogo, 〒6768686, JP)
FURUTATE, Satoshi (C/O Machine Tool Division, MITSUBISHI HEAVY INDUSTRIES LTD., 130, Roku-jizo, Ritto-sh, Shiga 80, 〒5203080, JP)
Application Number:
JP2009/071754
Publication Date:
July 07, 2011
Filing Date:
December 28, 2009
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES, LTD. (16-5, Konan 2-chome Minato-k, Tokyo 15, 〒1088215, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 〒1088215, JP)
HORI, Takumi (C/O TAKASAGO Research & Development Center, MITSUBISHI HEAVY INDUSTRIES LTD., 1-1, Arai-cho Shinhama 2-chome, Takasago-sh, Hyogo 86, 〒6768686, JP)
堀 匠 (〒86 兵庫県高砂市荒井町新浜２丁目１番１号 三菱重工業株式会社高砂研究所内 Hyogo, 〒6768686, JP)
三菱重工業株式会社 (〒15 東京都港区港南二丁目１６番５号 Tokyo, 〒1088215, JP)
HORI, Takumi (C/O TAKASAGO Research & Development Center, MITSUBISHI HEAVY INDUSTRIES LTD., 1-1, Arai-cho Shinhama 2-chome, Takasago-sh, Hyogo 86, 〒6768686, JP)
堀 匠 (〒86 兵庫県高砂市荒井町新浜２丁目１番１号 三菱重工業株式会社高砂研究所内 Hyogo, 〒6768686, JP)
International Classes:
B23Q1/38; B23Q1/70
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (Room 1003, Ambassador Roppongi Buildings 16-13, Roppongi 3-chome, Minato-k, Tokyo 32, 〒1060032, JP)
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