January 26, 2012
Guyson Corp. has designed and built a robotic pressure-blast machine that operates either as a seven-axis rotary table surface preparation system or as a horizontal roller-blasting system for preparing ID and OD surfaces of hollow-shaft components. The multiple-mode concept eliminates the need for a separate roller-blast machine, according to the company.
The multitasking robotic blast cabinet features a 12-ft.-long track extension with a powered transfer cart on which is mounted a servomotor-driven turntable with a 1.1-ton weight capacity. The 84-in.-dia. table comes with T-slots and quick-change fixture locating hardware to enable processing of a variety of part shapes and sizes. When the roller drive unit is needed for grit blasting of long cylindrical parts, it can be lowered into position by overhead crane and bolted to the table in less than 30 min.
For ID surface preparation in roller-blasting mode, the component is rotated at a controlled and adjustable speed, while a lance with an angled pressure-blast nozzle enters the bore of the part in programmed increments via a linear ball screw/ball nut actuator. The component OD can be grit-blasted simultaneously by the robotically manipulated blast nozzle.