| 摘要 |
1,182,013. Copy-milling. FRIEDRICH DECKEL PRAZISIONS MECHANIK & MASCHINENBAU. 19 Sept., 1967 [21 Sept., 1966], No. 42697/67. Heading B3K. A manually-controlled copy milling machine, Fig. 1, e.g. of the type having a pantograph 84 linking the tracer and cutter, is adapted for servo-assistance of the copying movements by means of a bearing arm 44, Figs. 1, 3, 4 extending from the tool carrier 36 and carrying servo control means 58, Figs. 1, 3 and 7, at an end portion thereof, the bearing arm 44 also supporting a pivoted lever 72, Fig. 4, through a further pivoted lever 68, Figs. 1, 3 and 4, which lever 72 at one end is connected rigidly to the tracer holder 80, Fig. 3, and at the other end carries a coupling pin 88, Fig. 7, which is rigidly attached to an input member 92 of the servo means 58. The tracer holder 80 has a coupling 82 for connection to the pantograph 84. Thus hand controlled movements of the tracer cause small pivotal or three dimensional movements of the lever 72 with corresponding input through the pin 88 and input member 92 to the servo means 58. For three dimensional copying the lever 72 is made vertically displaceable on its pivot. The servo means 58 preferably controls movements of the work-table 24 by means of hydraulic servomotors 16, 30, 32, Fig. 1, but may control feed of the tool carrier. If the work-table is servo controlled the tool support 36 is bolted up to machine column 10. If it is desired, e.g. for a finishing cut, to return to totally manually controlled copying the servo means 58 may be removed and a plug, Fig. 8, (not shown) attached in its place, this plug serving to connect the lever 72 rigidly and impivotably again to the bearing arm 44. |
