Title:
CONNECTOR FOR IMPACT TYPE DRILLING MACHINE
Document Type and Number:
Japanese Patent JPS6119575
Kind Code:
A
Abstract:
A coupling arrangement for a percussion drilling machine for coupling of a shank (7) unrotatably to a frame bushing (2) rotatably mounted in a frame and rotated by a rotating device. The frame bushing is provided with axial driving grooves (12) opening towards the shank and the shank is provided with axial counter grooves (13) opening towards the frame bushing. Rod-like wedge pieces (11) are mounted each in a pair of grooves formed by the grooves. The cross-section of each wedge piece comprises an arched surface portion (11a) and at least one planar surface portion (11b). Such wedge piece can adjust its position by turning in one groove of the pair of grooves so that the planar surface of the wedge piece is pressed into a planar contact with the planar surface of the other groove.
Inventors:
PETSUKA SARUMI
TEIMO MUUTONEN
TEIMO MUUTONEN
Application Number:
JP13212385A
Publication Date:
January 28, 1986
Filing Date:
June 19, 1985
Export Citation:
Assignee:
TAMPELLA OY AB
International Classes:
B23B45/16; B25D17/08; E21B1/00; E21B1/38; F16D1/08; F16D3/18; (IPC1-7): B25D17/08
Attorney, Agent or Firm:
Kiyotaka Sasaki
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