Title:
REAMER
Document Type and Number:
Japanese Patent JPH10263928
Kind Code:
A
Abstract:
To reduce bending moment in machining and enhance working accuracy.
In a reamer 10, three first cutting blades and three second cutting blades are alternately formed on a long cylindrical bar-like member at its circumferential face. Each first cutting blade has a first rough blade part 1b for rough working formed by given length 12 from its tip part and a first finishing blade part 1a following the first rough blade part 1b and formed to a finishing dimension. A radius step d2 is formed between the first rough blade part 1b and the first finishing blade part 1a.
Inventors:
OUMOTO TADASHI
NAKAYAMA TORU
NAKAYAMA TORU
Application Number:
JP7823097A
Publication Date:
October 06, 1998
Filing Date:
March 28, 1997
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
B23D77/00; (IPC1-7): B23D77/00
Attorney, Agent or Firm:
Yasunori Otsuka (1 person outside)