Forging device and method therefor

• US 6,457,342 B2
• Filed: 02/23/2001
• Issued: 10/01/2002
• Est. Priority Date: 02/24/2000
• Status: Expired due to Term

• Current Assignee: Klaus Schmidt
• Original Assignee: Klaus Schmidt
• Inventors: Tanahashi, Masanori, Ogata, Yoshinori
• Primary Examiner(s): Crane, Daniel C.
• Application Number:
  US09/790,607
• Publication Number:
  US 20010017050A1
• Time in Patent Office: 585 Days
• Field of Search: 723/64, 723/421, 724/04, 723/06, 723/56
• US Class Current: 72/364
• CPC Class Codes: B21J 1/06 Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations B21J5/063 takes precedence
• CPC Class Codes: B21J 13/08 Accessories for handling work or tools
• CPC Class Codes: B21J 5/00 Methods for forging, hammering, or pressing for working sheet-metal or metal tubes, rods, or profiles B21D; for working wire B21F; Special equipment or accessories therefor
• CPC Class Codes: B21J 9/08 equipped with devices for heating the work-piece electric heating elements H05B

Abstract

A forging device and a method therefor that enables improve forging precision of a work and lengthen life of dies of a forging device, by efficiently heating the work chiefly made of aluminum in one heating furnace, wherein the device has: a heating furnace for heating works W while moving the works W along the movement path; an intermediate processing means, disposed in the midst of the movement path in a heating furnace, for intermediately forming works W; an intermediate conveyance means for conveying works W from the heating furnace to the intermediate processing means; and a final processing means for making the intermediate conveyance means convey the intermediately formed works W to the heating furnace, reheating the conveyed the works W, and finally processing to form the works W.

Claims

1. A forging device, comprising:

a heating furnace for heating a work while moving the work along a movement path in said heating furnace,

an intermediate processing means, being connected at a point in the midst of the movement path, for intermediately forming the work,

an intermediate conveyance means for conveying said work from said heating furnace to said intermediate processing means, and for conveying the intermediately formed work from said intermediate processing means to said heating furnace, and

a final processing means for finally forming the intermediately formed work reheated in said heating furnace.

2. The forging device according to claim 1, wherein said movement path inside said heating furnace is formed into an annular shape.

3. The forging device according to claim 1, wherein the side wall of said heating furnace has an opening/closing door for conveying said work to said intermediate processing means.

4. The forging device according to claim 1, wherein a plurality of said works in the state of being loaded on a conveying tray are moved along said movement path inside said heating furnace and are conveyed by said intermediate conveyance means between said heating furnace and a neighborhood of said intermediate processing means.

5. The forging device according to claim 1, said intermediate conveyance means comprising

guide rails designed for said intermediate conveyance means to take said work out of said heating furnace, and

a rotary table for horizontally and rotatively moving part of said guide rails together with said work.

6. The forging device according to claim 4, said intermediate conveyance means comprising

guide rails designed for said intermediate conveyance means to take said work out of said heating furnace, and

a guide means for moving said conveyance tray on said guide rails by moving the conveyance tray along said guide rails.

7. The forging device according to claim 6, said intermediate conveyance means further comprising a rotary table for making said intermediate conveyance means horizontally and rotatively move part of said guide rails together with said work.

8. A forging method using forging device having a heating furnace for heating a work while moving the work along a movement path in said heating furnace, an intermediate processing means, being connected at a point in the midst of the movement path, for intermediately forming the work, an intermediate conveyance means for conveying said work from said heating furnace to said intermediate processing means, and for conveying the intermediately formed work from said intermediate processing means to said heating furnace, and a final processing means for finally forming the intermediately formed work reheated in said heating furnace, comprising the sequential steps of:

taking a work into said heating furnace,

heating said work in said heating furnace while moving the work along the movement path,

conveying said work, in the midst of the movement path, from said heating furnace to said intermediate processing means,

intermediately forming said work by said intermediate processing means,

taking said intermediately formed work out of said intermediate processing means at a point in the midst of the movement path,

heating said work in said heating furnace while moving the remaining part inside said heating furnace,

taking said work, at the terminal of the movement path, out of said heating furnace, and

finally processing to form said work taken out of said heating furnace in said conveyance process.

9. The forging method according to claim 8, wherein said work is chiefly made of aluminum.