| 摘要 |
PURPOSE:To increase the efficiency of bi-surface machining of an article, by laying a rail in the front of a two-spindle type vertical lathe, by arranging an article supply conveyer and an article delivery conveyer at both ends of the rail in a face-to-face relationship, and by mounting an auto-loader provided thereon with an arm adapted to grip an article and vertically swing the same, on the rail so that the autoloader may travel on the rail. CONSTITUTION:An auto-loader 10 supplies an article W on an article supply conveyer 11 onto a first rotary table 3a, picks up the article W on the first rotary table 3a after one surface of the article W is machined, then turns over the article W and supplies the same onto a second rotary table 3b, and picks up the article W on the second rotary table 3b after the other surface of the article W is machined, and shifts the article W onto an article delivery conveyer 12 in accordance with a predetermined program. Thus, the upper and lower surfaces of the article W are machined on the individual rotary tables, respectively, and therefore, the cutting operation may be carried out efficiently. Further, the series operations of supply, turn-over and delivery of the articles may be carried out by the auto-loader 10, and the movement thereof may be up to a limited position, and therefore, may be carried out under sequence control.
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