Patent ID: 6409442
Filing Date: 2002-06-25
Classification: B23D,Y10T

Abstract:
A vertical internal push broaching machine, comprisinga 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).