| 摘要 |
PCT No. PCT/SE94/00475 Sec. 371 Date Nov. 17, 1995 Sec. 102(e) Date Nov. 17, 1995 PCT Filed May 19, 1994 PCT Pub. No. WO94/26462 PCT Pub. Date Nov. 24, 1994A mounting apparatus for securing alternative grinding wheels to a threaded portion of an output shaft of a portable rotary grinding machine, the mounting apparatus comprising a threaded clamping device which cooperates with the threaded portion of the output shaft; a support hub which rigidly mounts on the output shaft, the support hub having an inner annular contact surface and an outer annular contact surface for backing grinding wheels mounted on the output shaft. The inner and outer annular contact surfaces are disposed concentrically relative to each other as well as relative to the output shaft, and the inner and outer annular contact surfaces are disposed at different axial levels such that the outer annular contact surface protrudes in front of the inner annular contact surface. Two alternatively applicable flanged clamping elements are provided, each having a respective annular plane contact surface and each clamping element being alternatively arranged to cooperate with the threaded clamping device. One of the clamping elements has a contact surface which opposes and is substantially equal in size to the outer annular contact surface of the hub, and the other of the clamping elements has a contact surface which opposes and is substantially equal in size to the inner annular contact surface of the hub. |
