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US 4,726,717 AGranted
Deep-bore drilling machine
AssigneeTBT Tiefbohrtechnik GmbH & Co. KG
InventorWolfgang Schmid
Life of this patent
Estimating the term…
Abstract
A deep-bore drilling machine consists of a deep-bore drilling unit (1) which is driven by rotation and has a deep drill tool (4, 7). The front end (7) of the deep-bore drilling tool (4) is led into the drill bushing (10) at the beginning of the drilling operation. The drill bushing (10) is thereby contained in a main spindle (22) and is replaceable. Also, the main spindle (22) can also be driven independent of drive (2) of the deep-bore drilling unit (1) by another drive (30).
Claims9
A machine tool, comprising:
- drilling unit means provided with a first motor drive means for drilling deep or long bore holes in a work piece, said first motor drive means rotating a long drill bit;
- drill bushing bearing means, said drill bushing bearing having mounted thereon a rotatable main spindle, said main spindle being provided with a second motor drive means, said second motor drive means being independent of said first motor drive means;
- said main spindle being removably fitted at its center of rotation with a drill bushing for receiving said drill bit or another selected tool holder whereby a bore hole may be drilled in a work piece and subsequently selected operations may be performed on the work piece by withdrawing said drill bit and installing selected tools on said main spindle tool holder which remains in alignment with the bore hole in the work piece.
A deep-bore drilling machine comprising:
- a first machine spindle (3) adapted for receiving a deep drilling tool (4);
- first driving means (2) for driving said first machine spindle (3);
- a drill bushing carrier (8);
- a second spindle (22) rotatably provided on said drill bushing carrier (8) adapted for selectively receiving and driving one of a plurality of tool units (32,33,34) or a bushing unit (21) for said deep drilling tool (4);
- second driving means (30) for driving said second spindle (22) independently of said first machine spindle (3);
- and
- means to selectively lock said second driving means when said bushing unit (21) is received in said second spindle (22).
4 more elements
Dependencies are inferred from the claim text.