HEAD CHANGING TYPE CUTTING TOOL AND MANUFACTURE THEREOF

Japanese Patent JP3539210

B2

PROBLEM TO BE SOLVED: To improve engaging strength and tool rigidity.
SOLUTION: A head part 12 and a shank part 11 are engaged with each other by shrinkage fitting. The shank part 11 is formed with a shaft part 16 and a taper face 18. The head part 12 is formed with a hole part 26 engaged with the shaft part 16 and a tapered part 28 engaged with the taper face 18. The hole part 26 and the tapered part 28 are respectively provided with interference, the inner diameters are smaller than the outer diameters or the shaft part 16 and the taper face 18. By shrinkage fitting, the shaft part 16 and the hole part 26, and the taper face 18 and the tapered part 28 are respectively fixed together. A key 17 is provided on the extreme end face of the shaft part 16, a key way 27 is provided on the bottom face 26b of the hole part 26 to engage with each other, and the sides of the key 17 and the key way 27 are positioned so as to nearly squarely meet with the main component of force of cutting resistance.

JP2020172020	FASTENING DEVICE HAVING CONTACT PLANE
JP6802919	Quick clamp device and portable machine tool
JPH11333606	HYDRAULIC CLAMP

Takamasa Shimano
Masayuki Okawa
Kazuya Yamazaki

JP15175398A

July 07, 2004

June 01, 1998

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Mitsubishi Materials Corporation

B23B31/02; B23B29/00; B23B31/117; B23P11/02; (IPC1-7): B23B29/00; B23P11/02

JP6046815U
JP62063002A
JP2082404U
JP7100795A
JP4063314U
JP3054444U

Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama

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