| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: proposed drill comprises drive unit incorporating transfer shaft revolving about its axis, cutting tool with rotational axis, and means of connecting cutting tool with output shaft. Note here that said connection means allow transmitting toque to cutting tool and incorporate elastic means to create automatically sustained axial vibration of cutting in drilling. To expand operating performances, aforesaid connection means may allow angular deviation between cutting tool axis and transfer shaft axis caused by axial forces applied to cutting tool in drilling. Cutting tool comprises first cutting end with rotational axis and second cutting end with rotational axis and serves for connection with drive means. To expand operating performances, connection zone is arranged between two ends to transmit frilling torque and allow elastic deformation along tool axis for creation of automatically sustained vibration of tool end along its axis under action of forced generated by drilling. Note here that said zone may elastically deform in too rotation that allow cutting tool axis and that of second end to form an angle. ^ EFFECT: expanded operating performances. ^ 19 cl, 6 dwg |
