| 摘要 |
A machine slide comprising a support member having two longitudinally-extending races with outwardly-facing, longitudinally extending grooves at opposite sides thereof, and a carriage movable on the support member. The carriage has two longitudinally-extending races having inwardly facing, longitudinally-extending grooves. When the carriage is placed on the support member, the grooves of the support member and the grooves of the carriage correspond to define two parallel longitudinally-extending raceways for roller bearings. There are two longitudinally-extending slits forming an island in the bottom surface of the carriage above one of the races on the carriage. A longitudinally-extending groove is located along the outside face of the side wall of the carriage nearest the island. A bearing retainer that regulates the spacing of the roller bearings is mounted within each raceway. At least one adjustment screw is disposed in the outside wall of the carriage nearest the island and extends through the race on the support member. Turning the adjustment screw adjusts the size of the raceways and applies a preload to the bearings. The slits and the longitudinally-extending groove on the carriage allow the carriage to flex and absorb irregular forces during sliding. In an alternative embodiment, the carriage is rigid and the support member has a flexible side wall that can absorb irregular forces.
|
