Machine tool cutter automatic replacing device

Abstract

The invention relates to a machine tool with a cutter head which is a sector disc whose angle is less than 270 degrees. Several clamps are uniformly distributed along the circle of said sector disc; the cutter head is mounted at the upper end of rotation shaft, which is inserted in the bracket; the bracket is vertically mounted on the support which is interlocked with the cradle; the lower end ofrotation shaft is meshed with worm via worm wheel, while the worm is driven by servo-motor; left and right gripping jaws are individually mounted on the cutter head via left and right rotation shafts; obconic hole is arranged on the sheets at the left of left and right rotation shafts and the left of left and right gripping jaws; the axial center of obconic hole is at the connection part of left and right gripping jaws; a cylinder hole is arranged along the axial direction of sliding rod; a space is arranged between the lower side surface of clamping plate and the upper surface of obconic hole, while a inclined dovetail with one inclined end-surface is mounted at the lower end of sliding rod. The invention can realize the change of knives between cutter head and main axis.

Description

technical field [0001] The invention relates to the field of machine tools, in particular to an automatic changing device for machine tools. Background technique [0002] The existing automatic tool changer for machine tools generally adopts a "bamboo hat-type tool magazine", and the clamps for holding tools are evenly arranged on a 360-degree circle, and the tool is loaded and unloaded through the movement of the mechanical Z-axis. Driven by air cylinders, etc., there is no mechanism (locking mechanism) to prevent the tool from flying out. Since the tools are arranged around the entire circumference, the processing area is occupied, resulting in a narrow processing area (the size of the workpiece that can be processed), and the entire track of the cylinder and the "bamboo hat" is required, so the structure is complicated and the cost is high. In addition, there is no way to prevent the tool from flying out. The locking mechanism cannot perform high-speed rotary positioning...

AI Technical Summary

Problems solved by technology

Since the tools are arranged on the entire circumference, the processing area is occupied, resulting in a narrow processing area (the size of the workpiece that can be processed), and the entire track of the cylinder and the "bamboo hat" is required, so the structure is complicated and the cost is high. In addition, there is no way to prevent the tool from flying out. The locking mechanism cannot perform high-speed rotary positioning of heavy tools, and the tool change time is long

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