Apparatus for straightening long saw blades, especially for band saws

US5931057A · kind A · utility

Assignee

• Vollmer Werke Maschinenfabrik GmbH · DE

Inventors

• Ernst Beck · Maselheim, DE
• Peter Lenard · Biberach, DE

Key dates

• Filing date: Jan 13, 1998
• Grant date: Aug 3, 1999
• Expiry date: Jan 13, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23D63/18
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A machine table (16) on which a saw blade (10) is movable in a direction of movement (A) which essentially conforms to the longitudinal extension of the saw blade is provided with a first measuring station (22) for measuring the saw blade (10) in a measuring plane (B) perpendicular to the direction of movement (A) thereof. The machine table (16) furthermore supports a second measuring station (28) for scanning an edge (14) of the saw blade (10) in the plane thereof transversely of the direction of movement (A) as well as a rolling station (26) which comprises first and second rollers (34, 36) for changing the tension profile of the saw blade (10) and the curvature of the edge (14) thereof. The second roller (36) is pivotably adjustable with respect to the first roller (34) about a pivot axis (C) which intersects the axes of rotation (D1, D2) of the two rollers (34, 36) approximately at right angles and thereby adapted to be positioned obliquely for correcting distortions of the saw blade (10). Independently thereof, the two rollers (34, 36) are pivotably adjustable in common about the pivot axis (C) mentioned and thus adapted to be positioned obliquely in accordance with the measur…