Tool changing method for numerical control machine tool

Abstract

The invention discloses a tool changing method for a numerical control machine tool. According to the method, when a tool changing program starts, a tool sheath starts to swing, meanwhile, a main shaft starts to move and rotates at the same time, the three actions are performed at the same time, and therefore time is saved. Moreover, according to the method, an in-place signal of a mechanical arm is replaced by a braking signal of the mechanical arm. When the braking signal of the mechanical arm is received, a tool clamping component starts to act immediately, so that action time of the tool clamping component is minimized. The tool changing method can be used for increasing tool changing speed.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tools, in particular to a tool changing method for numerical control machine tools. Background technique [0002] At present, the more commonly used tool change methods on CNC machine tools are: 1. The system receives the tool change command, the tool change program starts, the spindle moves to make the tool in use move to the tool exchange position, and the spindle rotates to make the tool in use switch to the tool change angle So that the tool in use can be buckled with the manipulator; 2. The tool holder on the tool magazine that is fixed with the tool to be changed swings from the horizontal position to the vertical position; 3. The manipulator starts the knife grabbing program, and the manipulator starts to rotate; 4. The manipulator rotates in place That is, one end of the manipulator is engaged with the tool in use, and the other end of the manipulator is engaged with the ...

AI Technical Summary

Problems solved by technology

[0003] In step 5 and step 7 of the above tool change method, it is necessary to wait for the manipulator to rotate in place before the tool clamping part is released and clamped. That is to say, when the manipulator rotates in place, the system first receives the in-position signal, and then the system sends out an action The signal causes the tool holding part to loosen or clamp, that is to say, after the manipulator rotates in place, the tool holding part still needs to wait for the system to send an action signal before it can be released or clamped. The process of the tool holding part waiting for the action signal and receiving The response process after the action signal takes a certain amount of time, and it takes a long time to loosen and clamp the tool clamping parts in steps 5 and 7; Move to the tool exchange place and rotate the spindle to the tool change angle before starting to swing the tool to be changed to a vertical position. The swing of the tool to be changed and the movement and rotation of the spindle are not carried out at the same time, which also takes a long time , after the system receives the tool change command, it takes a long time to wait for the tool to be changed to swing to the vertical position, the spindle to move to the tool exchange position, and the spindle to rotate to the tool change angle

It can be seen from the above that the current tool change method is relatively slow, which makes the machining efficiency of CNC machine tools not high.