Closed hydrostatic workbench of heavy-duty vertical milling machine

Abstract

The invention relates to the field of rotary workbenches and particularly relates to a closed hydrostatic workbench of a heavy-duty vertical milling machine. The closed hydrostatic workbench comprises a base, a main shaft, a guide rail, a pressing plate, a disk chuck, a driving shaft and a tooth ring, wherein the main shaft is arranged at the center of the base, and the disk chuck is mounted on the main shaft; the driving shaft is arranged at the side edge of the base and is in linkage connection with the disk chuck through the tooth ring clung to the outside of a bottom ring of the disk chuck, the guide rail and the pressing plate are arranged between the disk chuck and the base, the pressing plate is located at an inner ring of the disk chuck and is located on the guide rail, an upper hydrostatic oil cavity is arranged below the pressing plate, an oil pad is arranged between the guide rail and the base, and a lower hydrostatic oil cavity is formed between the oil pad and the guide rail. Due to the adoption of the structure, the carrying capacity is larger, the accuracy is higher, and the performance is more stable.

Description

[0001] technical field [0002] The invention relates to the field of rotary worktables, in particular to the closed static pressure of heavy-duty vertical turning and milling machines [0003] workbench. [0004] Background technique [0005] The rotary table is a machine tool accessory with a rotatable table, which is used to clamp the workpiece and realize the rotation and index positioning. Traditional large and medium-sized vertical lathe worktables mostly use static pressure technology, because they use pressure oil film as the medium, and have High load-bearing rigidity, no wear between friction pairs, can overcome the phenomenon of crawling, sensitive and stable operation, and the error homogenization, shock absorption and shock absorption of the bearing oil film make the static pressure table have extremely high rotation accuracy and positioning accuracy. It is precisely because of the above-mentioned outstanding advantages that it has been widely used in the prec...

AI Technical Summary

Problems solved by technology

[0006] In recent years, with the development of large-scale, heavy-duty, high-speed and high-precision products, new requirements have been put forward for the load-bearing capacity, static and dynamic performance of the workbench, especially in the emergence of large-scale vertical turning-milling machine tools. The rotary table cannot meet the design requirements due to structural reasons

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