Tool turret with reduced switching times

US5339504A · kind A · utility

Assignee

• SAUTER FEINMECHANIK GMBH · DE

Inventors

• Helmut Thumm · Heidenheim, DE
• Frieder Allgaier · Gräfenberg, DE

Key dates

• Filing date: Nov 4, 1993
• Grant date: Aug 23, 1994
• Expiry date: Nov 4, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/1494
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A tool turret includes a turret housing and a turret head rotatably mounted in and relative to the turret housing to selectable angular positions about a rotational axis. A preliminary indexing bolt secures the turret head in one of the angular positions following movement of the turret head between angular positions. A three-phase synchronous motor forms a rotary drive for the turret head and has at least first and second sets of pole pairs. The first set provides a first indexing speed. The second set has a smaller number of pole pairs then the first set and provides a second indexing speed. An interlocking member securely interlocks the turret head in any of angular positions. The interlocking member is axially slidable along the rotational axis between an interlocking position, in which the interlocking member teeth simultaneously engage the teeth and tooth spaces of the turret housing and the turret head and a contact position in which contact surfaces of the interlocking member and the turret housing engage, precluding engagement of the teeth of the interlocking member and the turret housing in any position other than the selectable angular positions of the turret head. Gears…