| 摘要 |
<p>PROBLEM TO BE SOLVED: To produce a damping effect by making a convex or concave round diametral surface of the rolling circumferential surface of a rolling body, so that when the rolling body rolls on the rolling groove, the frictional torque is positively increased. SOLUTION: In rolling groove 13 is formed on the inside surface of a slider 4 with regard to the rolling groove 12 formed on the let side of a rail 2, and on the inside surface of the slider 4, rolling grooves 16 and 17 corresponding respectively to a rolling groove 14 and a rolling groove 15 oppositely positioned to the rolling groove 14 with regard to the center line L of the rolling groove 12 are formed on the right side of the rail 2. The rail 2 is fixed to a base 1 by means of bolts, and the slider 4 is fixed to a reciprocating feeding table 3. Thereby, the preload acting on the entire rollers via the table 3 can be adjusted by changing the dimensions of a spherical roller 5, and the rolling grooves 13, 14, 15 form a part of common true circle so that the roller circulates around the slider 4 among the rolling grooves. Thus, the working can be facilitated and the rigidity of the entire structure can be enhanced, and the damping effect can be increased.</p> |
