Patent ID: 7056072
Filing Date: 2006-06-06
Classification: B23Q,G05B,Y10S,Y10T

Abstract:
1. An apparatus for controlling a relative movement of a cutting blade and a workpiece that are moved relative to each other by a movement device in an operation with a machine tool, said apparatus controlling said relative movement based on a relative position of said cutting blade and an object that is detected by said movement device when said cutting blade and said object are brought into contact with each other as a result of a relative movement of said cutting blade and said object that is made by said movement device, said apparatus comprising: a checking device that checks if a contact detecting device for detecting contact of said cutting blade and said object is in a normal condition in which said contact detecting device detects said contact when said cutting blade and said object are brought into contact with each other; and a contact determining device that determines that said cutting blade and said object have been brought into contact with each other, in accordance with an output provided by said contact detecting device.