MACHINE TOOL AUTOMATIC LUBRICATION SYSTEM Russian patent published in 1995 - IPC

FIELD: machine tool industry. SUBSTANCE: system has reversible pump 8, directly connected to control spaces 18 and 19 of shutoff valves 10 and 11, and intended for successive delivery of oil into circulating lubrication line 2 of headstock 4 and into periodical pressure lubrication line 3 of cross feed carriage 5. Pump 8 communicates through distribution panel 7 with oil reservoir 6 and through pressure line 36, filtering element 37, branches 39 and 40, with spaces 14 and 15 of shutoff valves 10 and 11. Installed in control spaces 18 and 19 of valves 10 and 11 are springs 16 and 17 which press on plungers 12 and 13. Two pairs of different-size non-return valves 26, 33 and 27, 34 are installed in distribution panel 7. Valves are located, respectively, in stepped channels 24 and 25. Delivery valve 23 intended to set pressure in line 3 is also installed in distribution panel 7. Non-return valves 33 and 34 are installed at inlet of channel 35 connected to pressure line 36. EFFECT: enhanced lubrication of machine tool. 1 dwg