Apparatus and method for manufacturing blade

Patent metadata

Field	Value
Publication number	US-10137487-B2
Application number	US-201514926082-A
Country	US
Kind code	B2
Filing date	Oct 29, 2015
Priority date	Oct 29, 2015
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

An apparatus for manufacturing a blade is provided. The apparatus for manufacturing a blade includes: an arm module including a pressing unit pivoting around a first shaft; a molding module including a molding die pressed by the pressing unit and molding bulk metallic glass (BMG) to a blade; and a drawing module pulling an end portion of the BMG exposed to the outside of the molding die to form an edge of the blade, wherein the drawing module includes a pair of drawing tools pulling one end portion of the BMG in two directions.

First claim

What is claimed is:

1. An apparatus for manufacturing a blade, the apparatus comprising:
an arm module including a pressing unit pivoting around a first shaft;
a molding module including a molding die, wherein the molding die is pressed by the pressing unit and a bulk metallic glass (BMG) is pressed to be molded to a blade in the molding die; and
a drawing module pulling an end portion of the BMG exposed to the outside of the molding die to form an edge of the blade,
wherein the drawing module includes a pair of drawing tools pulling one end portion of the BMG in two directions so as to generate a necking due to a plastic deformation of the BMG, and
wherein the pair of drawing tools pull the one end portion of the BMG in the two directions positioned to be coplanar with a direction in which the blade extends and forming a predetermined angle with respect to the direction in which the blade extends.

2. The apparatus of claim 1 , wherein
the pair of drawing tools are disposed to pull both sides of one end portion of the BMG in directions at angles ranging from 30 degrees to 60 degrees and ranging from −30 degrees to −60 degrees with respect to the direction in which the blade extends.

3. The apparatus of claim 2 , wherein
the arm module further comprises:
a linear driving unit that moves linearly; and a base unit configured to support the pressing unit and the linear driving unit,
wherein one side of the pressing unit is supported by the base unit so as to rotate around the first shaft, and the other side of the pressing unit is supported by the linear driving unit so as to rotate around a second shaft.

4. The apparatus of claim 3 , wherein:
the linear driving unit is supported by the base unit so as to rotate around a third shaft; and
the first shaft, the second shaft, and the third shaft are parallel to each other.

5. The apparatus of claim 4 , wherein
the linear driving unit moves in a direction perpendicular to the first shaft, the second shaft, and the third shaft.

6. The apparatus of claim 1 , wherein
the molding module comprises:
an upper support member disposed above the molding die to transmit pressing force from the pressing unit to the molding die;
a lower support member supporting the bottom of the molding die; and
a guide member provided in the lower support member and configured to guide a movement of the upper support member such that the upper support member pressed by the pressing unit moves linearly.

7. The apparatus of claim 1 , wherein
the molding die comprises:
an upper molding die configured to mold an upper portion of the blade; and
a lower molding die configured to mold a lower portion of the blade.

8. The apparatus of claim 1 , wherein
the molding module further comprises
a first cartridge heater configured to transmit heat to the molding die.

9. The apparatus of claim 1 , wherein
each of the pair of drawing tools comprises:
a clamping unit configured to press one end portion of the BMG; and
a driving unit configured to move the clamping unit such that one end portion of the BMG is pulled.

10. The apparatus of claim 9 , wherein
pressing force of the clamping unit applied to one end portion of the BMG is adjusted.

11. The apparatus of claim 9 , wherein
each of the pair of drawing tools may further include a second cartridge heater configured to transmit heat to the clamping unit.

Assignees

• Korea Inst Mach & Materials

Inventors

• Park Jong-Kweon
• Ro Seung Kook
• Lee Sung Cheul
• Kapoor Shiv G
• Zhu James

Classifications

• B26B21/4068

  Mounting devices; Manufacture of razors or cartridges (B26B21/528 takes precedence) · CPC title

• B21D53/64

  knives; scissors; cutting blades (B21D53/72 takes precedence; handle portions B21D53/70) · CPC title

• B26B21/58

  characterised by the material · CPC title

• C22C45/00 Primary

  Amorphous alloys (making amorphous non-ferrous alloys C22C1/11) · CPC title

• B26B9/00

  Blades for hand knives · CPC title