| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the sliding friction resistance of a telescopic cover device of a machine tool. <P>SOLUTION: The telescopic cover device includes: a telescopic cover 2 which is freely reciprocatable in conjunction with the reciprocation movement of a sliding part of a machine tool, in order to protect the sliding part from chips, dust, cutting oil and the like; and wipers 3 provided at ends of respective partial covers 2a-2d of the telescopic cover and removing chips, dust, cutting oil and the like dropping on sliding faces of adjacent partial covers 2b-2e. A large number of fine linear grooves 4 are formed on the sliding faces of the respective partial covers and friction-reducing film 5 is formed on the sliding faces. As a result, the contact areas with the wipers 3 is made small thereby reducing the sliding friction resistance and the sliding resistance is further reduced by the friction-reducing film 5. <P>COPYRIGHT: (C)2012,JPO&INPIT |
