| 摘要 |
The rotary machine grinds plates or strips of granite, marble etc. to the desired thickness, having a tool set with vertical shaft and a number of radial shafts caused to rotate by it about it and about their own axes. Each tool comprises a grinder disc (30) with small diamond plates (31), mounted on the outer end of a radial shaft (209. Inside the rotary tool set (10) the radial shafts can be arranged to slope downwards, so that their axes intersect that of the vertical shaft (11) at or slightly above the surface of the granite etc.
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