Press-tool

Patent metadata

Field	Value
Publication number	US-11285535-B2
Application number	US-201716311479-A
Country	US
Kind code	B2
Filing date	Jun 29, 2017
Priority date	Jun 30, 2016
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

A press-tool for manufacturing a cutting insert green body includes a first and a second punch movable along a first pressing axis. A first and a second die member are movable towards an end position. The first and the second die members are configured to form, in the end position, a die cavity. A core extends between and through the die cavity when the first and the second die member are in the end position. At least a first core portion is arranged to form the core, wherein the at least first core portion is arranged in the first or the second die member such that the at least first core portion is moved together with the first or the second die member.

First claim

The invention claimed is:

1. A press-tool for manufacturing a cutting insert green body, comprising:
a first and a second punch arranged to move towards and away from each other along a first pressing axis;
a first and a second die member arranged to move towards and away from an end position along at least a second axis which is non-parallel to the first pressing axis, wherein the first die member includes a first die cavity surface and the second die member includes a second die cavity surface, the first and second die members being configured to form, in the end position, a die cavity having first and second openings for receiving the first and second punches;
a core extending between the first and the second die cavity surfaces, through the die cavity, when the first and the second die members are in the end position; and
at least a first core portion for forming at least a portion of the core, the at least first core portion being arranged in the first or the second die member and joined to the first or the second die member, such that the at least first core portion is moved together with the first or the second die member to the end position.

2. The press-tool according to claim 1 , wherein the at least first core portion is releasably attached to the first or the second die member.

3. The press-tool according to claim 1 , wherein the at least first core portion is arranged in the first die member.

4. The press-tool according to claim 3 , wherein the first die member includes a first bore extending from the first die cavity surface towards a rear end of the first die member and wherein the first core portion includes a first pin arranged in the first bore.

5. The press-tool according to claim 4 , wherein at least a portion of the first pin is adhesively or mechanically joined to the bore in the first die member.

6. The press-tool according to claim 3 , wherein the first die member includes a first recess and wherein the first core portion includes a first locking member configured to fit into the first recess of the first die member, whereby the locking member and the first recess are configured such that the first locking member is held in the first recess such that rotational and/or translational movement of the first core portion is restricted.

7. The press-tool according to claim 1 , further comprising a second core portion for forming at least a portion of the core, wherein the second core portion is arranged in the second die member.

8. The press-tool according to claim 7 , wherein the second die member includes a second bore extending from the second die cavity surface towards a rear end of the second die member and wherein the second core portion includes a second pin arranged in the second bore.

9. The press-tool according to claim 8 , wherein at least a portion of the second pin is adhesively or mechanically joined to the second bore in the second die member.

10. The press-tool according to claim 7 , wherein the second die member includes a second recess and wherein the second core portion includes a second locking member configured to fit into the recess of the second die member whereby the second locking member and the second recess are configured such that the second locking member is held in the second recess such that rotational and/or translational movement of the second core portion is restricted.

11. The press-tool according to claim 7 , wherein the first core portion is arranged in, and joined to, the first die member and the second core portion is arranged in, and joined to, the second die member such that the first core portion is moved together with the first die member to the end position and the second core portion is moved together with the second die member to the end position and form the core through the die cavity.

12. The press-tool according to claim 7 , wherein the first core portion includes a first front portion and the second core portion includes a second front portion, the first and second front portions being arranged to mutually engage each other to form a continuous core through the die cavity.

13. The press-tool according to claim 7 , wherein a total compressional stiffness of one of the first or the second core portion is greater than a total compressional stiffness of the other of the first or the second core portion.

14. The press-tool according to claim 1 , wherein the at least first core portion includes a shoulder which is configured to rest on the first or the second die cavity surface.

15. The press-tool according to claim 1 , wherein the at least first core portion is integral with the first or the second die member.

16. The press-tool according to claim 15 , wherein the first die member includes a first bore extending through the first core portion towards a rear end of the first die member, and a first pin is arranged in the first bore and extends through the first core portion.

17. The press-tool according to claim 6 , wherein the first die member includes a first bore extending through the first core portion towards a rear end of the first die member, and a first pin is arranged in the first bore and extends through the first core portion.

Assignees

• Seco Tools Ab

Inventors

• Sterkenburg Dirk

Classifications

• B22F2302/10

  Carbide · CPC title

• B30B11/007

  using a plurality of pressing members working in different directions · CPC title

• B22F2003/033

  with multiple punches working in the same direction · CPC title

• B22F2999/00

  Aspects linked to processes or compositions used in powder metallurgy · CPC title

• B22F3/03 Primary

  Press-moulding apparatus therefor · CPC title