Method for manufacturing metal compact and apparatus for manufacturing metal compact
AssigneeToyota Boshoku Kabushiki Kaisha
InventorKazuyuki Hirata
Life of this patent
Estimating the term…
Abstract
A heat sink having a base and a projecting portion that extends from the base is manufactured by cold pressing a metal component. In the first process, a preparatory compact is formed by pressing the metal component with a first die including a first die block and a first punch. The preparatory compact has a depression on a surface of the metal component that faces the first punch and a protrusion on a surface of the metal component that faces the first die block. In the second process, by pressing the preparatory compact with the second die including a second punch and a second die block, the depression is crushed and the protrusion is pushed out toward the back of the hole of the second die block to form the projecting portion.
Claims4
A method for manufacturing a metal compact having a base and at least one projecting portion that extends from the base by cold pressing a metal component, the method comprising:
- a first process for obtaining a preparatory compact, in which the metal component is pressed with a first die including a first punch, which has a projection corresponding to the at least one projecting portion, and a first die block, which has a hole corresponding to the projection, so that a depression corresponding to the projection is formed on a surface of the metal component that faces the first punch, and a protrusion corresponding to the hole is formed on a surface of the metal component that faces the first die block;
- and
- a second process for forming the at least one projecting portion, in which the preparatory compact is pressed with a second die including a second punch having a planar face with no projections, which presses a surface including the depression of the preparatory compact formed in the first process, and a second die block, which has a hole corresponding to the depression, so that the depression is crushed, and the protrusion is pushed out toward a back of the hole of the second die block to form the at least one projecting portion.
Dependencies are inferred from the claim text.