Global Patent Index - EP 1045738 A1

EP 1045738 A1 2000-10-25 - A METHOD AND DEVICE FOR MACHINING A THROUGH BORE

Title (en)

A METHOD AND DEVICE FOR MACHINING A THROUGH BORE

Title (de)

VERFAHREN UND VORRICHTUNG ZUR BEARBEITUNG EINES DURCHGEHENDEN LOCHES

Title (fr)

PROCEDE ET DISPOSITIF D'USINAGE D'UN TROU TRAVERSANT

Publication

EP 1045738 A1 (EN)

Application

EP 98951656 A

Priority

  • IL 9800533 W
  • IL 12216997 A

Abstract (en)

[origin: WO9924201A1] A method for machining a through bore (5) within a workpiece (W) and a device (10) for the implementation of the method. The method is suitable for finishing and semi-finishing machining operations of through bores and holes, in particular, tapping of internal threads, drilling, counter-boring, reaming, roll burnishing and piercing, etc. The method comprises imparting to the cutting tool (4) a linear motion accompanied by rotation thereof about the bore (5) axis and imparting to the tool auxiliary motion which is associated with the propelling thereof to an initial position after completing each stroke. Propelling of the tool is carried outside the bore (5) through a duct (14) between the bore (5) exit and entrance. Since friction associated with linear backward motion of the tool (4) through the bore (5) is avoided it is possible to reduce wear of the cutting tool (4) to improve tool life and to increase productivity of machining.

IPC 1-7 (main, further and additional classification)

B23B 35/00; B21D 53/24; B21J 13/02; B23B 39/10; B23B 51/06; B23Q 5/22

IPC 8 full level (invention and additional information)

B23G 9/00 (2006.01); B23Q 5/06 (2006.01); B23Q 5/26 (2006.01)

CPC (invention and additional information)

B23Q 5/06 (2013.01); B23G 9/001 (2013.01); B23Q 5/261 (2013.01)

Citation (search report)

See references of WO 9924201A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

WO 9924201 A1 19990520; AU 9759298 A 19990531; EP 1045738 A1 20001025; IL 122169 D0 19980405

INPADOC legal status


2004-01-07 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030603

2000-10-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000613

2000-10-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT