| 摘要 |
<p>Disclosed is a collision avoidance system for preventing collision between a moving body and a workpiece in a machine tool including, for example, a table (13) on which a workpiece (w) is placed, a moving body (ram (17), saddle (16)), and movement axes (X axis, Y axis, Z axis, W axis) along which the moving body or the table is moved linearly, the collision avoidance system comprising: a non-contact-type distance sensor (ultrasonic sensors (21a) to (21f)) that is attached to the moving body and that detects the distance to the workpiece; and a collision avoidance control means (NC device (31)). The collision avoidance control means includes: a collision determination unit (38) that determines whether or not a sensor signal of the distance sensor is shorter than a distance setting value; and a collision avoidance processing unit (39) that executes a process for preventing collision between the moving body and the workpiece if it is determined by the collision determination unit that the sensor signal is shorter than the distance setting value.</p> |
