Hot forming tool

US7165434B2 · kind B2 · utility

Assignee

• BENTELER MASCHINENBAU GMBH · DE

Inventors

• Martin Vinnen · Witten, DE
• Robert Stockter · Hannover, DE
• Hans-Jürgen Knaup · Bad Lippspringe, DE

Key dates

• Filing date: Sep 15, 2005
• Grant date: Jan 23, 2007
• Expiry date: Sep 15, 2025

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C51/428
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The object of the invention is a hot-forming tool (1) having an upper die and a lower die (1a, 1b), the upper as well as the lower die (1a, 1b) each consisting of a base plate (2) having a forming cheek (3) fixed thereto and a core (4) which is also fixed to the base plate (2), and a duct system (5) for the guiding-through of a coolant being constructed between the core (4) and the backside of the forming cheek (3) facing the core (4).In this case, at least the forming cheeks (3) are constructed as cast parts.As a result of this manufacturing method relating to the forming cheeks (2) (3? translator), the manufacturing costs of the hot-forming tool (1) can be significantly lowered because a high-expenditure mechanical cutting machining of the forming cheeks is only still required in the area of the mounting surfaces (3a) as well as the mutually facing exterior sides (3b).