Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Work or object holding type
Patent
1980-08-22
1983-04-05
Harris, George
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Work or object holding type
335306, H01F 704
Patent
active
043792774
ABSTRACT:
A magnetic chuck or holder for workpieces adapted to be mounted on a worktable of a machine tool comprises a stack of alternating permanent magnets and magnetically conducting plates having a central passage through the stack in which a second stack of magnets and magnetically conductive plates is received for longitudinal movement, e.g. by a crank or an eccentric drive cooperating with one end of the second step. The two stacks are so arranged that they magnetically cancel the magnetic field lines on the upper, lateral and bottom surfaces of the chuck in one position of the second stack but create such field lines in a second position that all surfaces of the upper, lower and lateral surfaces are magnetically effective. This allows switching of the chuck to an effective state so that a workpiece is affixed magnetically to the upper surface of either or both lateral surfaces, and at the same time the chuck is magnetically fixed on the worktable of the machine tool.
REFERENCES:
patent: 2471067 (1949-05-01), Hitchcock
patent: 3017545 (1962-01-01), Meier
patent: 3818399 (1974-06-01), Edwards
patent: 4055824 (1977-10-01), Baermann
Dubno Herbert
Harris George
Ross Karl F.
LandOfFree
Magnetic chuck does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic chuck, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic chuck will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-566482