| 摘要 |
PROBLEM TO BE SOLVED: To secure a smooth movement of a moving table, and excellently maintain machining accuracy of a machine tool by preventing sticking of dust and chips to a guide rail. SOLUTION: Flexible bellows 18 and 19 are installed on both ends of the table 14 for reciprocating along the guide rail 13. When reciprocating the table 14 for grinding a work 16 by a grinding wheel 17, for example, atmospheric pressure in the bellows 18 increases, and atmospheric pressure in the bellows 19 tries to reduce, and since a hole 20 formed in a base 12 flows air in the bellows 18 and 19, the atmospheric pressure is equalized. Thus, the air including the dust, etc., does not intrude into the bellows 19 from the outside.
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