Plasma cutting torch protection and collision detection device of numerically controlled plasma cutting machine

Abstract

The invention discloses a plasma cutting torch protection and collision detection device of a numerically controlled plasma cutting machine. A positioning plate is mounted on the base plate of the device. A plasma cutting torch mounting base is mounted in the through holes of the base plate and the positioning plate. The upper surface of the positioning plate is provided with a conductive layer, and three pairs of evenly distributed steel balls which are in contact with the conductive layer are mounted on the positioning plate. Three evenly distributed metal pins are mounted on a plasma cutting torque mounting base, and the metal pins are in contact with the steel balls respectively. The bottom of the plasma cutting torque mounting base is provided with a flange, and three springs are evenly distributed between the flange and the base plate. A plasma cutting torch is mounted in the mounting hole of the plasma cutting torch mounting base. One end of a wiring terminal is connected to a numerical control system, while the other end of the wiring terminal is connected to the conductive layer. The device provided by the invention is capable of preventing the plasma cutting torque from being collided and damaged while cutting a metal; under support of the numerical control system, the system is used for measuring the distance between the plasma cutting torque and a steel plate at the beginning of cutting, so that the cutting height is automatically set, and the production efficiency and the cutting quality are improved.

Description

technical field [0001] The invention relates to a plasma cutting torch protection and collision detection device of a numerical control plasma cutting machine. Background technique [0002] During the cutting process of the CNC plasma cutting machine, the ion cutting torch moves in three-dimensional space, and the ion cutting torch must maintain precise positioning in order to maintain the cutting accuracy within the required range. If the height of the ion cutting torch is out of control or the cutting material is deformed, or a collision accident occurs, the ion cutting torch may be damaged and the workpiece may be scrapped. [0003] In order to reset the position of the ion cutting torch in time, the numerical control system is usually used to receive the signal returned by the proximity switch. Once the proximity switch is triggered, the numerical control system can stop cutting and report an error. However, in the actual process, there is a distance between the positio...

AI Technical Summary

Problems solved by technology

There is a distance between the position of the sensor and the front end of the ion cutting torch, and the accuracy of the sensor is also limited. It cannot accurately measure the collision height point between the material and the ion cutting torch, and the quality of the perforation cannot be guaranteed.

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