JPH033165U

JPH033165U -

Info

Publication number: JPH033165U
Application number: JP6181889U
Authority: JP
Priority date: 1989-05-30
Filing date: 1989-05-30
Publication date: 1991-01-14

Description

[Brief explanation of drawings]

第１図は本考案の第１の実施例を係る引抜型を
示す正面図、第２図は第１の実施例により形成し
た整流子片を示す正面図、第３図は本考案の第２
の実施例に係る引抜型を示す正面図、第４図は第
２の実施例により形成した整流子片を示す正面図
、第５図ａ，ｂは整流子を示す構成図、第６図は
従来の引抜型を示す断面図、第７図ａ，ｂは従来
の引抜型を示す正面図、第８図は従来の整流子の
面取部分を拡大して示す構成図である。図面中、３０，４０……引抜型、３１，４１…
…加工孔、３２，３３，４２，４３……面取部、
３５，４５……整流子片である。 FIG. 1 is a front view showing a drawing die according to the first embodiment of the present invention, FIG. 2 is a front view showing a commutator piece formed according to the first embodiment, and FIG.
FIG. 4 is a front view showing a commutator piece formed according to the second embodiment, FIGS. 5 a and b are configuration diagrams showing the commutator, and FIG. FIGS. 7a and 7b are front views showing the conventional drawing die, and FIG. 8 is an enlarged configuration diagram showing the chamfered portion of the conventional commutator. In the drawing, 30, 40...drawing die, 31, 41...
...Processed hole, 32, 33, 42, 43... Chamfered part,
35, 45... Commutator pieces.

Claims

[Claims for Utility Model Registration] Commutator piece processing in which a commutator piece has a processed hole in a shape corresponding to the cross-sectional shape of the commutator piece, and a commutator piece is formed by passing commutator piece material through the processed hole and pulling it out. In the drawing die for use, a chamfer is formed in the drawing die so as to chamfer two corners of the commutator piece that extend in the axial direction on the brush sliding contact surface side. A drawing die for processing child pieces.