Self-straightening machine tool cross beam

Abstract

The invention discloses a self-straightening machine tool cross beam. The self-straightening machine tool cross beam comprises a cross beam body, a plurality of tie bars, a tension device, sensors, gaskets and nuts, the cross beam body is of a barrel-shaped structure with the two closed ends, the cross section of the cross beam body is rectangular or trapezoidal, and longitudinal ribs are arrangedin an abdominal cavity of the cross beam body in the horizontal direction; the plurality of tie bars are arranged in the abdominal cavity of the cross beam body in the horizontal direction, penetratethrough the end faces of the two ends of the cross beam body and are distributed on the upper sides and the lower sides of the longitudinal ribs; the tension device is fixedly arranged on the outer end face of one end of the cross beam body and used for applying tension to the tie bars, the nuts are arranged at the other ends of the tie bars, the gaskets are attached to the backs of the nuts, andthe other faces of the gaskets are attached to the outer end face of the other end of the cross beam body; and the sensors are arranged on the tie bars and used for detecting the deformation condition of the machine tool cross beam in real time and feeding the deformation condition back to a numerical control system. The machine tool cross beam is straightened by adjusting the tension of the tiebars in real time, the rigidity and the stability of the machine tool cross beam are further improved, the manufacturing difficulty is not increased, and the application range is wide.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to a self-straightening machine tool beam. Background technique [0002] Machine tools are machines for manufacturing machines, also known as machine tools. Due to the wide variety of machines or mechanical parts, different shapes, and different manufacturing processes, machine tools produced according to manufacturing processes are also various, usually classified as metal cutting machine tools, Forging machine tools and woodworking machine tools, etc. There are many ways to obtain mechanical parts in mechanical manufacturing. In addition to cutting, there are casting, forging, welding, stamping, extrusion and 3D printing. However, parts that require high precision and fine surface roughness are currently mainly The final processing is carried out by cutting on the machine tool. Therefore, the metal cutting machine tool is the key equipment to ensure high-precision parts or manufactur...

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Problems solved by technology

In practice, the deformation of the beam is not only affected by the pressure of the slide plate ram spindle head assembly 3, but also affected by many factors such as instantaneous cutting resistance, friction, vibration and temperature. The deformation and poor rigidity of the machine tool beam will not only affect the machine tool. The overall rigidity of the frame, and the deformation of the beam will directly lead to the reduction of the machining accuracy of the machine tool. Therefore, in the research of continuously improving the precision and stability of high-end CNC machine tools, how to improve the rigidity and stability of the machine tool beam is the current research of the machine tool industry. Key topics, that is to say, if the rigidity and stability of the beam of the machine tool are improved, the precision and stability of the high-end CNC machine tool can also be improved

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