Title:
DRILLING DEVICE HAVING RADIALLY DISPLACEABLE DRILL SHANK
Document Type and Number:
Japanese Patent JP2749532
Kind Code:
B2
Abstract:
PURPOSE: To prolong the service life of a drill bit by supporting a drill bit chuck and/or a plate with radially resilient support members.
CONSTITUTION: A drill bit 4 is lowered toward a plate 10 in the arrow direction 9 for drilling. The plate 10 is a decorative plate mounted on a vibrating table 11. The vibrating table 11 is supported by radially resilient support members 12 and is vibrated in the horizontal direction by an unbalanced motor 13 serving as a vibrating device. During the manufacture of the cylinder portion 14 of a hole 15, a relative motion in the radial direction is made between the plate 10 and a drill head 5, thus a high polishing speed or grinding speed is attained at the center of the grinding face 6 of the drill head 5. When the vibrating device is used to generate this relative motion, the vibrating device is used at least during the manufacture of the cylinder portion 14.
Inventors:
HARUTOMUUTO BOONETSUTO
SHUTEFUAN RINTO
UIRI HAUGU
SHUTEFUAN RINTO
UIRI HAUGU
Application Number:
JP29987494A
Publication Date:
May 13, 1998
Filing Date:
December 02, 1994
Export Citation:
Assignee:
ARUTSUURU FUITSUSHAA GMBH
International Classes:
B23B41/06; B23B19/02; B23B29/034; B23B41/00; B23B51/00; B27C3/00; B28D1/14; (IPC1-7): B23B41/06; B23B19/02; B28D1/14
Domestic Patent References:
| JP5546294B2 |
Attorney, Agent or Firm:
Toshio Yano (2 outside)