Hydraulic drive mechanism in machine tool

Details Hydraulic drive mechanism in machine tool Hydraulic drive mechanism in machine tool

1991-06-27

1992-06-30

Briggs, William

Metal working

Plural diverse manufacturing apparatus including means for...

Type of machine

91410, 408130, 409212, B23Q 526, F15B 1304

Patent

active

051251396

ABSTRACT:
A hydraulic drive mechanism in a machine tool, in which both the ends of a feed rod connected to frontward/reverse rotation drive means are journaled in bearings by a base frame and a cylinder frame, a feed plate is threadably mounted on the feed rod between the cylinder frame and the base frame, reciprocatively movable members are connected to the rods of double-acting cylinders, the primary chambers and secondary chambers of these cylinders are respectively connected to the primary chambers and secondary chambers of double-acting drive cylinders being oil pressure sources for the first-mentioned cylinders, the drive cylinders are fixed to one surface of the cylinder frame and have their rods inserted through holes provided in the cylinder frame, the distal ends of the rods of the drive cylinders turnably connected to the feed plate, and the other surface of the cylinder frame is confronted to the base frame with a proper spacing therebetween. In addition, drive-cylinder transfer valves which communicate and shut off the primary and secondary chambers of the drive cylinders are interposed in pipe lines laid between these chambers.

REFERENCES:
patent: 1877701 (1932-09-01), Speck et al.
patent: 3244077 (1966-04-01), Mary
patent: 3274891 (1966-09-01), Rollat
patent: 4658485 (1987-04-01), Yang
patent: 4901627 (1990-02-01), Schulze

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