The power off design requires pressure applied to the hydraulic piston and transmitted through the rod to push the clamping sleeve down. Loss or reduction in hydraulic pressure will not release the tool. The cam inside the spindle closes the gripper fingers and the tool is securely locked. The angle design of the clamping ring and cylinder shoulder increases the spring force 300%, the company reports. The spring force applied to the clamping sleeve pushes the balls outward. The pull-in force is multiplied by the patented intensifying mechanism. These fingers are pulled into the taper with the spring pack of the power drawbar. The cutting tool is held securely in the spindle taper with gripper fingers. Advantages of the OTT-JAKOB Power Drawbar include: power off clamping, intensified spring force, compact design with minimal rotating mass, no load on spindle bearings during tool change, and low tool release force required. Advanced Machining & Engineering has introduced the improved OTT-JAKOB brand power drawbar for toolholding, the company said.
0 kommentar(er)
