Automatic cutting machine utilizing high negative pressure to adsorb materials

Abstract

An automatic cutting machine utilizing high negative pressure to adsorb materials comprises a machine frame, a movable crane span structure, a crane span structure sliding rail, a numerical control servo electromechanical system, a cutting machine head, a machine head sliding rail, a cutting disc, a blade and a negative pressure box. The machine frame and the negative pressure box are in a mutually independent structure. The negative pressure is arranged in a frame which is arranged on the upper portion of the machine frame. The automatic cutting machine utilizing high negative pressure to adsorb materials has the advantages that the machine frame of a main machine is processed through inblock cast, the machine frame and the negative pressure box are separately manufactured and then combined, not only strength of a machine tool platform is guaranteed, but also accuracy of the machine tool is guaranteed, even if the negative pressure boxy which is separated from the machine frame deforms a little due to the frequent compressing and releasing of ultra negative pressure, the main machine frame does not deform, and therefore, processing accuracy is not influenced, the machine tool is not damaged, and the machine tool is enabled to keep accuracy requirements of manufacturing design. Due to the adoption of the movable crane span structure which can compensate expansion caused by heat and contraction caused by cold, the expansion caused by heat and the contraction caused by cold do not cause deformation and clamping stagnation of a guide rail. The blade is tightly clamped and is arranged under the cutting disc, cutting accuracy is improved, and the blade is prevented from deforming and breaking.

Description

technical field [0001] The invention relates to an automatic cutting machine capable of absorbing materials (workpieces) under a large negative pressure, commonly known as a computerized cutting bed, which is mainly used for cutting various cloth (surface) materials. Background technique [0002] The main frame of the current computer cutting machine is welded by steel pipe and steel plate, and the vacuum (negative pressure) box is integrally welded with the main frame. The first problem caused by this structure is: the use of steel pipe welding as the machine tool The main frame makes the overall structural strength of the machine insufficient, and in actual use, it will cause a deviation of the perpendicularity between the tool and the machine surface, resulting in a decrease in precision and errors; another major problem is: because the negative pressure box is made of steel plates and The main frame is welded as a whole, and the negative pressure box should be evacuated ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an automatic cutting of large negative pressure adsorption materials to solve the fatigue and deformation of the frame caused by high vacuum adsorption materials in the prior art, resulting in inaccurate accuracy and inaccurate cutting materials; There is no compensation mechanism for thermal expansion and contraction. When the temperature changes, the slide rail carrying the mobile bridge will be deformed or even stuck, and the resistance will increase, which will affect the normal operation of the servo system and seriously affect the cutting accuracy of the machine tool; and the blade is easy to damage. The problem

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