| 摘要 |
771,787. Copy-milling. STARRFRASMASCHINEN AKT.- GES. Sept. 8, 1953 [Sept. 10, 1952], No. 30907/55. Divided out of 771,786. Class 83 (3). [Also in Group XXIX] A copying-device, e.g. for a milling- machine comprising a table 4, movable by pistons 7a, 8a, relatively to a tool 2 and supporting the work 5 and a pattern 6, comprises a feeler 11, suspended by a spherical joint 11a in a casing 10 and passing through a tube 12 also suspended by a spherical joint 12a in casing 10, which is supported by arm 9 on the machine-frame 1. The pistons are hydraulically operated under the control of four valves 26 arranged radially around, and spring- urged into contact with, the tube 12, and the table is moved in the same direction as the tube. Feeler 11 traces the pattern-contour and closes appropriate switches 41 arranged radially and energizing coils 43 of magnets 43a, which deflect the tube in the direction opposite to that in which the feeler has moved. The device is operated in similar manner to that described in the parent Specification. |
