Novel beam and ram combined structure

Abstract

The invention provides a novel beam and ram combined structure. A U-shaped ram and a beam are included. The beam is transversely arranged in a groove of the U-shaped ram. The U-shaped ram can transversely slide on the beam through two transverse sliding mechanisms symmetrically arranged on the two sides of the beam and vertically move along the beam through two vertical sliding mechanisms symmetrically arranged on the two sides of the beam. A main shaft box is arranged at the center position of the lower end of the U-shaped ram, so that a cantilever structure in the horizontal direction disappears, and influences on product machining precision from the cantilever structure are avoided. Additional bending moment exerted on the beam during product machining due to gravity center deflection of the main shaft box is eliminated. Two lead screws are used for driving a sliding saddle, and it can be guaranteed that the main shaft box part has better advantages in the aspect of rapid braking; meanwhile, stress of the main shaft box is relatively uniform, and the later machining precision is further improved; and two grating rulers are arranged on the side wall of the beam so that movement synchronism of the transverse sliding mechanisms is guaranteed.

Description

technical field [0001] The invention relates to the technical field of machine tools, in particular to a novel beam ram combination structure. Background technique [0002] The three-axis linkage gantry machining center is a multi-purpose machine tool machining center that performs mobile processing on the three axes of X, Y, and Z. Among them, most gantry machining centers use table movement to solve the movement of the X-axis, while the Y-axis and The Z-axis works on the beam and the ram. The beam is fixed on the column, and the ram can move left and right on the beam by relying on the saddle. That is, the saddle moves on the beam with the ram to realize the Y-axis. Movement, for the movement of the Z axis, the up and down movement of the ram relative to the saddle is used to solve the problem. As a result, three-axis linkage is formed, which enables the gantry machining center to realize the machining of complex planes and curved surfaces. As for the word Longmen, it is...

AI Technical Summary

Problems solved by technology

Due to the existence of the cantilever structure, the center of gravity of the main shaft in the vertical direction is offset, which makes the center of gravity of the main shaft and the direction of the processing force required for processing not on the same straight line, resulting in an offset. The processing accuracy is affected, and at the same time, it also makes the beam bear additional bending moment when the product is processed by the machine tool

Moreover, the cantilever structure will cause the upper and lower wire gauges to bear different forces, resulting in different degrees of wear, which will make the cantilever structure more obvious in the later stages of production.

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