2007 American WJTA Conference and Expo August 19-21, 2007 . Houston, Texas Paper BENEFITS OF DYNAMIC WATERJET ANGLE COMPENSATION Mohamed Hashish Flow International Corporation Kent, WA, USA 98032 mhashish@flowcorp.com www.flowcorp.com ABSTRACT Dynamic waterjet (DWJ) angle compensation systems have been introduced to the marketplace. They offer new advantages for producing accurate parts. Before DWJ, the cutting speed was the only one degree of freedom available to control part geometry for a given jet. Now, two additional degrees of freedom, namely taper and lead angles control, are provided with DWJ. By accurately modeling and using taper and lead angles, the productivity can be increased by several factors because the jet may no longer need to be slowed down significantly around corners or to obtain parallel walls. The cutting speed should mainly (or only) be determined by the required surface finish and not by the cut geometry. In this paper, the speed range is divided into zones based on the level of produced waviness and these zones also relate to taper and trailback. Optimal selection of the lead and taper angles is related to waviness, taper, and trailback. Organized and Sponsored by the WaterJet Technology Association