| 摘要 |
PCT No. PCT/DE93/00157 Sec. 371 Date Oct. 8, 1993 Sec. 102(e) Date Oct. 8, 1993 PCT Filed Feb. 24, 1993 PCT Pub. No. WO93/17828 PCT Pub. Date Sep. 16, 1993.An orbital disk grinder comprises a housing, grinding disk which can be applied to a working surface, a motor for moving the grinding disk so that the grinding disk gyrates in a circular orbit and simultaneously rotates about its axis, and speed control means operative for setting a speed of the grinding disk low when a normal force acting on the working surface is low, and high when the normal force acting on the working surface is high, so that a normal force acting on the grinding disk serves as a setting variable of the speed control means.
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