摘要
The tool (1) has a tool-holding spindle (4) extended along an axis (A) and holding a tunneling tool (30) i.e. drill, and brushless electric motors (8, 10) connected to a tool-holding spindle driving mechanism (12) for rotating respective driving units i.e. driving pinions (40, 46). An electronic control unit independently controls the motors to adjust rotation speed of the respective units (40, 46), in an independent manner. The motors have output shafts (32, 34) that rotate the units (40, 46), respectively, where the shafts are engaged with respect to one another. An independent claim is also included for a tunneling method.
摘要译文
The tool (1) has a tool-holding spindle (4) extended along an axis (A) and holding a tunneling tool (30) i.e. drill, and brushless electric motors (8, 10) connected to a tool-holding spindle driving mechanism (12) for rotating respective driving units i.e. driving pinions (40, 46). An electronic control unit independently controls the motors to adjust rotation speed of the respective units (40, 46), in an independent manner. The motors have output shafts (32, 34) that rotate the units (40, 46), respectively, where the shafts are engaged with respect to one another. An independent claim is also included for a tunneling method.
Jaillon, Jacques (Rue de la Dhuys, 93130 Noisy le Sec, FR) Galand, Jérôme (Résidence Impératrice 6 rue du Stade, 77340 Pontault Combault, FR). Machining machine: European Patent Application EP1982783[P]. 10/22/2008: