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
Application
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
IPC 8 full level
B25B 11/00 (2006.01)
CPC (source: EP)
B25B 11/005 (2013.01)
Citation (search report)
- [X] US 3307818 A 19670307 - MICHAEL COCITO JOE
- [XP] US 4448404 A 19840515 - OGAWA KOJI [JP], et al
- [A] DE 1923833 A1 19701112 - VER FLUGTECHNISCHE WERKE
- [A] US 3627338 A 19711214 - THOMPSON SHELDON
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