Vertical servo hydraulic tool rest

Abstract

The invention discloses a vertical servo hydraulic tool rest, which comprises a base, cylindrical vertical shafts, a drive system, inner gear rings, tool stages and a braking and loosening component, wherein the inner sides of the lower ends of the tool stages are fixedly with a movable fluted disc respectively, while upper ends are fixedly connected with the inner gear rings; fixed fluted discs are arranged on the upper end face of the base between the movable fluted discs and the vertical shafts; meshing teeth are arranged on the upper end faces of the movable fluted discs and the fixed fluted discs; the inner gear rings and the tool stages are driven by the drive system to rotate; the drive system comprises a speed reducer, a servo motor, a drive gear and a transmission gear; the speed reducer and the servo motor are connected with each other and are arranged below a bearing block; the drive gear is arranged above the bearing block, and is connected with an output shaft of the speed reducer; and the transmission gear is arranged on the bearing block, is externally meshed with the drive gear and is internally meshed with the inner gear rings. The vertical servo hydraulic tool rest has the characteristics of small moment of inertia, stable rotation, large output torque and relatively larger braking torque.

Description

technical field [0001] The invention relates to the field of mechanical processing, and more specifically relates to a vertical servo hydraulic tool holder with small moment of inertia, stable rotation, large output torque and relatively large braking torque. Background technique [0002] CNC tool post is an important functional part of CNC lathe, and its performance directly affects the overall performance of the machine tool. Now commonly used vertical tool holders, such as figure 2 As shown, the stepper motor is used to drive the gear set to rotate, the triple chainring is positioned, and the brake is tightened and released by the rectangular thread to drive the double chain to move up and down, which is realized by the interaction force between the triple chains. [0003] The existing technology does not use hydraulic pressure to tighten and loosen the brake, but connects the double toothed plate and the tool table through a key, and adds a rotating sleeve to the doubl...

AI Technical Summary

Problems solved by technology

[0003] The existing technology does not use hydraulic pressure to tighten and loosen the brake, but connects the double toothed plate and the tool table through a key, and adds a rotating sleeve to the double toothed plate, and the rotating sleeve is connected to the vertical shaft through a nut rectangular thread transmission, so that the When the sprocket is engaged, the key restricts the rotation of the knife table and the rotating sleeve so that it can only move up and down. In this way, the brake is tightened and released, and the brake force cannot be effectively guaranteed, and the indexing is not reliable; at the same time, the step The motor drives the gear set to realize the rotation of the knife table. In order to achieve the required reduction ratio, the number of gear stages used is generally not less than 4, such as image 3 As shown, limited by the space, the gears are relatively small, and the gear shaft is also relatively thin, which leads to too many high-speed rotating bodies, large moment of inertia, low gear strength, and small transmission torque. Once the torque is slightly larger, the gear teeth and the gear shaft are very easy to break

Images