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US 6,409,442 B1Granted
Vertical internal push broaching machine
AssigneeOswald Forst Maschinenfabrik und Apparatebauanstalt GmbH
InventorsAndreas Berktold, Thomas Grigutsch
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Abstract
A vertical internal push broaching machine comprises a machine column and a workpiece lifting table which is guided for displacement on carriage guideways. Underneath the lifting table, a feeder carriage is disposed vertically displaceably on guideways. These guideways can be separate from the carriage guideways. The lifting table is actuated by means of a single elevating drive which is disposed behind the plane spanned by the carriage guideways.
Claims16
A vertical internal push broaching machine, comprising
- a machine column (3) having
- an upper rail (4) and
- a back wall (5);
- carriage guideways (9a, 9b) mounted on the back wall (5) and disposed in a common vertical plane;
- a workpiece lifting table (10) displaceably guided on the carriage guideways (9a, 9b) in front of the back wall (5);
- a feeder carriage (11) guided for vertical displacement and disposed underneath the lifting table (10);
- a lifting table drive connecting the machine column (3) and the lifting table (10);
- at least one upper broach holder (31) mounted on the rail (4);
- at least one broach seat (18) disposed on the lifting table (10) for the accommodation of a workpiece (19) which is to broached;
- and
- at least one lower workpiece holder (17) mounted on the feeder carriage (11),
- a workpiece seat (18) and an upper broach holder (31) and a lower broach holder (17) at a time being disposed coaxially of the central longitudinal axis (21) of a broach (18);
- wherein the lifting table drive is formed by a single elevating drive which is disposed behind a plane spanned by the carriage guideways (9a, 9b);
- and
- wherein the elevating drive connects the rail (4) and the lifting table (10).
12 more elements
Dependencies are inferred from the claim text.