Manufacturing process of machine tool bed with outer protective cover

Abstract

The invention relates to the technical field of computer numerical control machine tools and particularly discloses a process for manufacturing a machine tool bed with an outer protective hood. The process comprises the following steps: step (1), welding a tool bed steel skeleton except a guide rail supporting plate; step (2), subjecting the welded tool bed steel skeleton to heat aging treatment twice or for three times, wherein the heat aging time interval lasts for 48 hours or longer, the internal temperature of a heating furnace is controlled to be 600-650 DEG C, the heat preservation timelasts for 18-24 hours, the cooling time is not less than 36 hours, the heating and heat preservation processes of the heat aging treatment are performed in a vacuum environment, and air is introducedinto the powered-off heating furnace after passing through a burning charcoal layer during the cooling process; step (3), filling the tool bed steel skeleton with concrete; and step (4), fixing the guide rail supporting plate onto the tool bed steel skeleton. The heating, heat preservation and cooling processes of the heat aging treatment are all isolated from oxygen, so that the circumstance thatiron sheets being easy to fall off are formed on the surface of the tool bed steel skeleton when the tool bed steel skeleton is oxidized in the high-temperature state can be avoided.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tools, in particular to a manufacturing process of a machine bed with an outer protective cover. Background technique [0002] In order to improve the machining accuracy of precision machine tools, the vibration of the machine tool should be minimized during high-speed machining. The bed of a high-precision machine tool should have high structural rigidity and high damping performance. The machine tool bed of traditional materials cannot meet the above two conditions at the same time. To this end, a machine tool bed with polymer concrete poured outside the steel frame has been developed. The bed has high rigidity and high damping performance. The machine tool has high stability during high-speed machining and can meet the needs of supporting large parts in high-speed machining centers. performance requirements. Compared with similar traditional body machine tools, the machinin...

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Problems solved by technology

[0003] The overall pouring of large and complex polymer concrete bed is difficult, the manufacturing cost is high, and the molding quality is difficult to guarantee

In order to solve this problem, the Chinese patent application number 201711399179.2 discloses a CNC machine tool bed processing process; when the process performs thermal aging treatment on the steel frame, since the steel frame is not isolated from the air, and the steel frame is at a high temperature state, so the surface of the steel skeleton will be rapidly oxidized, and a peeled oxide layer will be produced, resulting in uneven surface of the steel skeleton, which is not easy to paint

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