Global Patent Index - EP 0139824 A3

EP 0139824 A3 19860212 - VACUUM CLAMPING DEVICE FOR CLAMPING WORK PIECES ON MACHINE TOOL TABLES AND THE LIKE

Title (en)

VACUUM CLAMPING DEVICE FOR CLAMPING WORK PIECES ON MACHINE TOOL TABLES AND THE LIKE

Publication

EP 0139824 A3 19860212 (DE)

Application

EP 84105771 A 19840521

Priority

DE 3338476 A 19831022

Abstract (en)

[origin: EP0139824A2] In a device for clamping workpieces on machine tool benches, in particular as circular chucks on lathes having a clamping plate, the grooves are formed by a spiral whose windings emanate from a fixed point. The vacuum source is advantageously connected to this point. The consequence of this is that, when clamping a workpiece, it is in principle only necessary to employ a small elastic gasket at one point in order to separate from the vacuum source the part of the spiral groove which is no longer in the projection area of the workpiece. <IMAGE>

IPC 1-7

B25B 11/00; B23Q 3/08

IPC 8 full level

B25B 11/00 (2006.01)

CPC (source: EP)

B25B 11/005 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI LU NL SE

DOCDB simple family (publication)

DE 3338476 C1 19840823; EP 0139824 A2 19850508; EP 0139824 A3 19860212

DOCDB simple family (application)

DE 3338476 A 19831022; EP 84105771 A 19840521