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November 2015

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Robotic Finishing Machine Blasts Shot or Grit

Guyson Corporation offers a newer version of its RB-RSSA-8 robotic blast system and has customized it according to the special requirements for cleaning and surface preparation of machined aerospace castings using either shot or grit media.

The new variant of this model has a FANUC Robotics LR Mate-200iD 6-axis robot mounted on the reinforced back wall of the blast chamber, a position that allows greater reach and motion capability to accommodate the range of components to be processed by the customer. In previous versions, a larger robot is mounted on a pedestal or hung from the roof of the cabinet.

A 24-inch diameter turntable is adapted to accept the component-holding fixtures for all parts to be blasted and is servomotor-driven, so the radial orientation of the component is coordinated as a seventh axis by the robot's R-30iB controller. A jib crane mounted on the roof of the blast enclosure and a rubber-flapped crane slot facilitate loading of heavy parts onto the table, which is designed with a weight capacity of 250 pounds.

The media reclamation and delivery system of the custom RB-RSSA-8 robotic blasting machine is configured to enable separation of stainless steel shot and aluminum oxide grit media fed to two different pressure pots of 2.3 cubic foot capacity. Depending on the particular components to be treated, an operator connects either the blast hose from the grit-blast pressure vessel or the shot-blast pressure pot. Dust collection for the system is provided by a single cartridge-type collector with an extraction value of 2,000 cfm designed and built by the robotic blast machine manufacturer.

The nozzle-manipulating robot is fitted with a custom-tailored suit made from laminated material with fabric and polymer film plies to isolate the precision articulated arm from the harsh abrasive environment of the blasting chamber. In operation, the 7-axis robotic blasting system is designed to execute the motion program for each different component with accuracy, constantly maintaining the correct nozzle angle, stand-off distance and surface speed to produce an identical surface condition on all areas of the part, even as it follows the contours of complex-shaped components.

Quick access to pre-programmed recipes for dozens of different components, as well as real-time process data, such as blast pressure and media levels, is provided by a custom-designed touchscreen human-machine interface (HMI). In addition to its process monitoring and control functions, the HMI displays production statistics and prompts for the performance of important maintenance activities or inspections that are driven by the total number of blasting hours.

Prospective users of automated or robotic blasting equipment are encouraged to submit sample components for free laboratory testing and application engineering evaluation at the blast machinery manufacturer's factory in northeastern New York State.

For more information contact:

John C. Carson

Guyson Corporation

13 Grande Blvd.

Saratoga Springs, NY 12866-9090

800-633-6677 / 518-587-7894

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