| 摘要 |
<p>Revolving tool holder (1) is connected to hydromotor (2) with reversible flow direction. The supply end of the hydraulic cylinder (3) and piston (4) incorporating damping device for both terminal position of piston. The pressurised fluid is supplied to cylinder chambers (31) or (32) by pump (5) via non-return valve (6), distributing valve (8) and a further distributing valve (9). The movement of piston (3) in cylinder (3) causes a displacement of fluid on the other side of the piston (4). The hydraulic fluid is supplied to the hydromotor via adjustable throttling valve (10), distributing valve (8) and a further distributing valve (11). The fluid leaves the hydromotor via distributing valve (11), pressure limiting valve (16) and is piped into return line (12). The distributing valve (8) controls the fluid supply to the cylinder (3) when operated in its two positions. By operating the valve (11) a change of rotation of hydromotor (2) is achieved.</p> |
