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CRI has been awarded Fanuc Robotic Integrator status.
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CRI has been integrating Fanuc Robots with centerless grinders for over a decade and has been awarded integrator status because of our innovative approach allowing communication directly from the grinder to the robot. CRI's EZ Touch control system makes robot operation easy. Very little information is needed to set-up the robot and to grind. The ease of use allows quick training operators and fast start-ups in-plant.
Click on any of the pictures below for a short video.
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Robotic loading of class 9 bearings: this customer has small batch sizes and therefore set-up time needed to be kept to a minimum. CRI was able to provide short set-ups and reduce the number of passes required with a 340-20 twin grip while holding size tolerance to .000050 with roundness held under .000020. Operators were reduced with one robot loading and another robot unloading. The operator simply sets up the machine and monitors the operation.
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Bowl feed to robotic load, unload, and grind three parts at a time: CRI's CSV-12 has 3.1 million pounds of static stiffness. No grinder has ever been produced with this much capability. The CSV-12 has two-axis CNC dressing on both the regulating wheel and the grinding wheel. The dual servo slide system eliminates slide locks and provides automatic comp after regulating wheel dress. Operators love the ease of set-up and the extreme repeatability of the machine.
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Robotic palletized loading of pump shafts: this 330-15 was designed to infeed grind many different part numbers with CRI's EZ Touch operator friendly control and a robot to load and unload the grinder. The robot unloads from the pallet that comes straight from heat treat and fills the shipping container after grind, saving many handling steps that the operator did manually in the past. The reduction in handling and the programmability of the grinder quadrupled the production rate.
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Robotic load of 30 inch shafts: The Kodiac was the perfect choice to infeed grind 30 inch long shafts for this automotive manufacturer. The Kodiac is the largest of CRI's brand new machines with many features designed into the build of the grinder. The Kodiac has no hydraulics at all, and comes with either 20 or 30 inch wide wheel capabililty. Dual servo slides eliminates slide locks and provides for compensation after regulating wheel dress. The robot receives load information from the grinder so it never needs resetting.
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Robotic loading of 18 inch OD bearings: This project involved massive re-engineering of a 430-12 to create greater opening of the machine for infeed grinding multiple very large bearings. The machine's static stiffness was greatly enhanced with the addition of dual servo slides to achieve .050 stock removal in one pass, holding a +/- .0005 tolerance. CRI employed dressing during the infeed cycle to keep the wheels cutting freely and achieve a fine micro finish on the bearings. The machine's controls also control the robot, keeping the operator's job simple. Parametrics are used to input vital information easily and all part information is stored for easy retrival the next time the part is run. Changeover from part to part is accomplished in about 15 minutes allowing flexibility for the vast multitude of different part numbers that the machine will handle.
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Robotic integration into a manufacturing cell for throttle shafts: The throttle shaft this 220-8 is grinding had burr issues from the preceeding process. The thru slot covering the main diameter of the body had a .060 burr on either end. The grind operation was required to grind over the entire slot and remove the burr while maintaining roundness and concentricity between several journals. Floor to floor cycle is under 13 seconds on 400 series stainless steel. The flelxibility of the robotic system and the easy to operate control system enabled the company to bring the product line in-house and get up and running quickly.
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Robotic integration into plant wide part conveyance: The crankshaft has unique handling issues well solved with robotics. This 220-8 effectively handles grinding the journals while the robot unloads the grinder, loads the grinder, places the crank into gaging, and onto hangers that transfer the crank to the next operation. The contact gage is used for automatic size compensation.
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Robotic loading of crankshafts for pin grinding: This crankshaft is robotically loaded into a special pin grinding machine. This special machine has dual synchronized chucks, diamond roll dressing, and robotic loading for effective grinding of the pin in crankshafts. Developed for an extremely aggressive cycle, the Pin Grinder improves production rates and quality of the part.
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