| 摘要 |
1,137,652. Replacing worn tools. GENERAL ELECTRIC CO. 11 Jan., 1967 [12 Jan., 1966], No. 1559/67. Headings B3B and B3T. Apparatus comprises means for releasing a cutting insert from a toolholder, indexing it and re-clamping it. The bit is of round, triangular, square or other shape. The tool 11 is secured in a block 28 by screws 30. The insert 15 is secured by a cam pin 19 held in locked position by a key 21 operated by a pneumatic or hydraulic device 31. When the device 31 is operated to release the insert, an electromagnetic gripper 34 is lowered with a slide 45 (by a device 50 mounted on a slide 47), grips and raises the insert and then indexes it by way of a device 44 and gears 40, 39. New inserts are stacked in a magazine 57 and can be fed by a slide 61 and a device 63 to a point beneath a second gripper 35 also mounted on the slide 45. If the slide 47 is then moved by a device 53, the new insert can be positioned over the tool and an old insert discarded by the gripper 34 into a magazine (57a). The insert and seat are cleaned by air jets 64, 64a. The apparatus is controlled by an electricallyoperated timer driving cams and operating on a time basis or according to the number of cuts made or the condition of the operative cutting edge. When a magazine (57a) is full of inserts used once, it is inverted and used as a supply magazine. |
