Title:
ボールエンドミルの製造方法及びボールエンドミル
Document Type and Number:
Japanese Patent JP6771213
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a ball end mill of a smaller diameter than 0.1 mm in an outer diameter.SOLUTION: A rough-processed raw material 20 is set so as to become a negative electrode and a copper system block 35 is set so as to become a positive electrode in a power source 36, and the rough-processed raw material 20 is advanced to the copper system block 35 by a movement mechanism 33 while rotating by a rotary mechanism 31, and a recess is formed in the copper system block 35 by discharge of turning to the copper system block 35 from the rough-processed raw material 20, and is formed in a hemispherical shape by melting a tip corner part of the rough-processed raw material 20 by heat from this recess.EFFECT: In discharge processing, the rough-processed raw material side is daringly set as the negative electrode, that is, the electrode side. As a result, a tip fine pillar of the rough-processed raw material is indirectly gently melted by heat on the copper system block side. Thus, a superfine ball end mill being 0.005 mm in a minimum outer diameter can be manufactured.SELECTED DRAWING: Figure 3
Inventors:
Mitsuhashi
Application Number:
JP2016175336A
Publication Date:
October 21, 2020
Filing Date:
September 08, 2016
Export Citation:
Assignee:
Mitsui stamped company
International Classes:
B23P15/34; B23C5/10; B23C5/16; B23H9/00
Domestic Patent References:
| JP3161423U | ||||
| JP2011016224A | ||||
| JP2003094226A | ||||
| JP2009000771A |
Attorney, Agent or Firm:
Yoichiro Shimoda