Method of processing formed product, and metal cope and metal drag used for the method

• US 20060027626A1
• Filed: 09/30/2003
• Published: 02/09/2006
• Est. Priority Date: 10/01/2002
• Status: Active Grant

• Current Assignee: Amada Company Limited
• Original Assignee: Amada Company Limited
• Inventors: Endo, Shigeru
• Granted Patent: US 7,490,501 B2
• Time in Patent Office: Days
• US Class Current: 228/101
• CPC Class Codes: B21D 28/10 Incompletely punching in such a manner that the parts are still coherent with the work
• CPC Class Codes: B21D 35/00 Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00 B21D21/00 takes precedence
• CPC Class Codes: B21D 5/01 between rams and anvils or abutments
• CPC Class Codes: B21D 5/045 With a wiping movement of the bending blade
• CPC Class Codes: Y10T 29/49792 Dividing through modified portion

Abstract

A method is provided for processing a product formed by a punch press. The method includes leaving a micro joint connecting a workpiece to a raw material forming the product when forming a slit in the workpiece along an outer shape of the raw material. The method also includes forming the product by bending a bending process portion downward on the basis of a cooperation of an upper metal mold and a lower metal mold. The method further includes dropping the product by separating the connection between the product and the workpiece by the micro joint.

Claims

1. A method of processing a product formed by a punch press, comprising:

leaving a micro joint connecting a workpiece to a raw material for the product when forming a slit in the workpiece along an outer shape of the raw material;

forming the product by positioning a bending process portion of the raw material on a lower metal mold and bending the bending process portion downward on the basis of a cooperation of an upper metal mold and the lower metal mold; and

dropping the product by separating the connection between the product and the workpiece by the micro joint.

2. An upper metal mold, comprising:

a punch guide supported to an upper mold holder in a punch press so as to be vertically movable;

a punch body provided within the punch guide so as to be vertically movable; and

a punch body provided in a lower end portion of the punch body,

wherein a bending process portion is provided in a lower end portion of the punch chip so as to protrude to a side portion; and

wherein the punch chip is provided so as to be movable in a protruding direction of the bending process portion with respect to the punch body.

3. The upper metal mold according to claim 2, further comprising:

a pressure moving mechanism for pressure moving the punch chip in the protruding direction of the bending process portion when the punch body moves vertically.

4. The upper metal mold according to claim 3, pressure moving mechanism comprising:

an inclined surface formed in an opposite side to the protruding direction of the bending process portion in the punch chip; and

a punch chip pressing member provided in a lower portion of the punch guide, the pressing member being slidable with the inclined surface.

5. A lower metal mold, comprising:

a die main body detachable with respect to a lower mold holder of a punch press, the die main body having a die hole formed therein; and

a plurality of bending process edges formed at a plurality of positions in an inner peripheral edge of the die hole, the bending process edges bending a workpiece,

wherein each of a plurality of dimensions from a center of the die hole to the plurality of bending process edges is differentiated so as to be capable of corresponding to the workpieces having different thicknesses.

6. A lower metal mold, comprising:

a die main body that is detachable with respect to a lower mold holder of a punch press, the die main body having a die hole formed therein; and

a die chip that forms a part of an inner peripheral edge of the die hole and that is provided with a bending process edge for executing a bending process of a workpiece,

wherein the die chip is provided so as to be detachable with respect to the die main body.