Dead weight balancing device and method applied to cross beam saddle of numerical control gantry machine tool

Abstract

The invention belongs to the technical field of numerical control gantry machine tools, and discloses a self-weight balancing device and method applied to a cross beam saddle of a numerical control gantry machine tool. The device comprises a component used for reducing the gravity of a sliding saddle and a ram acting on first inclined iron, so that the friction force of a first guide rail combination surface is reduced, and the response speed of the sliding saddle and the ram in the Y direction is increased; a second disc spring is pre-pressed by means of a second screw and acts on a sliding block through a second pressing block, the direction of torque M2 formed by the force F2 is opposite to the direction of torque MG formed by the dead weight of the sliding saddle and the dead weight of the ram, and the acting force resists forward overturning generated by the dead weight of the sliding saddle, so that the overturning stress of the sliding saddle and the ram is reduced. The abrasion degree of the main guide rail junction surface is reduced. In the finish machining process of a machine tool, friction force is smaller, sensitivity is higher, cutting force borne by the machine tool during rough machining is larger, impact resistance is higher, a certain damping effect is achieved, and cutting vibration can be eliminated.

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