| 摘要 |
<p>Hydraulic controller for moving a work table on a machine tool which has a two speed drive, high speed with low power and low speed with high power, fed from a circuit which has a pump and a return tank. A single traverse valve (4) is used with a slide (5) which can be moved manually to achiever infinitely variable movement of the table. Further automatic movement of the slide effects a speed change or the stopping of the table in the end position. The valve guarantees changing from fast to slow traverse when the presure increases in the hydraulic circuit, caused by the working action of the table.</p> |
