Saddle swivel head tilting device
AssigneeToshiba Kikai Kabushiki Kaisha
InventorsAkira Ochiai, Yutaka Saito, Makoto Sagara
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Abstract
The invention relates to improvements in a tilting mechanism for a saddle swivel head for a double housing type machine tool. The saddle swivel head 13 is provided at the sides thereof in the tilting direction with hydraulic cylinders 18R, 18L, to which is connected a hydraulic piping system 19 for giving swivel balancing pressures and back pressures when the swivel head 13 is tilted by a predetermined angle by a tilting driving mechanism. The saddle swivel head 13 is tilted while providing swivel balancing pressures to the hydraulic cylinders 18R, 18L, and after tilting the head by the predetermined angle, back pressures are applied to the hydraulic cylinders 18R, 18L to compensate for a tilting moment of the saddle swivel head 13.
Claims6
A tilting device for a saddle swivel head for a double housing type machine tool, said saddle swivel head having a saddle mounted for horizontal movement on a cross beam and a head body mounted on said saddle for swivel movement in the left and right directions and having a spindle head thereon, said tilting device comprising:
- a tilting driving mechanism connected to said head body and for tilting said head body with a predetermined position as a center;
- a pair of hydraulic cylinders arranged at both sides of said head body in the tilting direction with the end of the rod of each of said hydraulic cylinders being connected to each side of said head body, said rod performing a forward and backward movement following a tilted position of the head body;
- and
- pressure regulating means for regulating pressures applied to said hydraulic cylinders.
Dependencies are inferred from the claim text.