APPARATUS AND METHODS FOR Z-AXIS CONTROL AND COLLISION DETECTION AND RECOVERY FOR WATERJET CUTTING SYSTEMS

摘要

This invention relates to apparatus and methods for z-axis control and collision detection and recovery for waterjet and abrasive-jet cutting systems. In one embodiment, an apparatus includes a linear rail (216), a slide member (214), at least one actuator (208) having a first end coupled to the slide member and a second end fixed with respect to the linear rail, a position sensor (224), and a controller (230). The actuator provides an adjustable support force that supports the weight of the cutting head (120), allowing the cutting head to be controllably positioned at a desired height above the workpiece (12). In another aspect, a collision between the cutting head and an obstruction, causes a second mount member to disengage from a first mount member to prevent breakage of the cutting head. The members are quickly and easily re-engaged without time-consuming re-calibration, for example by a biasing member.