Automatic tool unclamping device and tool changing method of drilling machining center

Abstract

The invention relates to the technical field of machine tools, in particular to an automatic tool unclamping device and tool changing method of a drilling machining center. The tool unclamping device comprises a stand column and a spindle box, the spindle box is glidingly mounted on the stand column, and the stand column is provided with a lifting mechanism for driving the spindle box to ascend and descend; the spindle box is provided with a spindle assembly fixedly mounted on the spindle box, a tool unclamping rod capable of rotating relative to the spindle box and a reset spring, one end of the reset spring is fixedly connected with the spindle box, the other end of the reset spring is fixedly connected with the tool unclamping rod, and a pressurizing tool unclamping mechanism is further arranged in the spindle box and comprises a telescopic rod capable of moving telescopically; during tool changing, the telescopic rod of the pressurizing tool unclamping mechanism stretches out and drives the tool unclamping rod to rotate in the tool unclamping direction, and the tool unclamping rod rotates and is matched with a tool unclamping ring of the spindle assembly to change tools. Compared with the prior art, the tool unclamping device has the advantages that the structure is simple, the manufacturing cost is low, and the spindle box can carry out tool changing work in any position through additional arrangement of the pressurizing tool unclamping mechanism.

Description

technical field [0001] The invention relates to the technical field of machine tools, in particular to an automatic tool-setting device and a tool-changing method for a drilling machining center. Background technique [0002] During the processing of CNC machine tools, in order to meet the processing of different processes, the operator needs to change different tools for processing, while the tool magazine of CNC machine tools is a device for storing tools and realizing automatic tool change, thus replacing In the past, the manual tool change method was adopted. [0003] For some special processes, special tools are required for processing, and some special tools cannot be installed in the original tool magazine of the machine tool due to their own structure. The special tools will interfere with the tool magazine, and some special tools The weight of the tool exceeds the load-bearing limit of the tool magazine, and it cannot be installed in the tool magazine originally kn...

AI Technical Summary

Problems solved by technology

[0003] For some special processes, special tools are required for processing, and some special tools cannot be installed in the original tool magazine of the machine tool due to their own structure. The special tools will interfere with the tool magazine, and some special tools The weight of the tool exceeds the load-bearing limit of the tool magazine, and it cannot be installed in the tool magazine originally known by the machine tool, so that automatic tool change cannot be realized

These special tools are generally placed on special tool holders, and manual tool changes are assisted, so the operator is at risk of being easily bruised

[0004] In addition, the current drilling machining center adopts the mechanical tool change method. The spindle needs to move to a specific position to perform the tool change. It is impossible to change the tool at any position in the spindle movement direction. If the tool is changed at a different position, it is necessary to manually assist the tool change. The operating space is narrow and the operator is prone to the risk of being injured.

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