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Movies - Thrufeed    Print


Click on one of the samples below for a short movie clip of some past automation projects. Call today to ask for a copy to be sent to you.


Programmed turnkey infeed/thrufeed combination grinding: CRI designed this 220-8 to grind CB antenna's from straight bar stock with .090 stock removal on the tapered end. Many different part numbers are produced with everything the machine needs to know, preprogrammed to make operation a breeze. This turnkey system uses CRI's EZ Touch PC based system which integrates the machine and all automation.


Small diameter shafts, fully automated.  The magazine shaft loader feeds parts into the grinder and laser gaging keeps parts on size with automatic compensation as the parts come out of the grinder. The operator is left available to the other machines in the cell. The 350-20 AE has been retrofit with many advanced features to improve the grind process including dressing-on-the-fly, eliminating the need to shut down the grinder and interrupting cell flow.


 

Deep groove centerless grinding.  Yes, deep grooves can be centerless ground.  This customer has a bearing journal on an output shaft with deep groove requirements. CRI developed a thrufeed shuttle loader to feed the parts into the 340-20 and incorporated automatic plunge dressing. CRI's comp system can be programmed to automatically compensate after dressing and still give the operator the ability to manually override.

Automating part handling for thrufeed applications reduces operators: Long run production has historically involved more operators to feed the machine at a fast pace. This system incorporates a hopper to feed a Pick & Place system that keeps the conveyor loaded for continual thrufeed grinding on this 340-20.

Part handling eases long run thrufeed grinding: These shafts have .012 to .015 stock removal and .008 bend, creating issues in part handling and grinding. The solution was a conveyor system with CRI's frequency regulating wheel drive to feed the parts with separation during the grind. Automatic dressing and compensation keeps the process running in a 24x7 operation on this 340-20.


Short bar support fixture aids feeding of long shafts: The special work support design has easy adjustment that isn't prone to corrosion from the grinding process.  roller adjustment is easy and free-moving. Perfect for thrufeed shaft grinding on the 340-20 or any model, the longer the part the more this workrest design pays off in reduced set-up time.


One micron total tolerance achieved in thrufeed grinding: This transmission component has a .000039 total size tolerance.  CRI maintains size with CRI's transmission retrofit, gaging with auto-loop feedback to CRI's servo comp system, and low-friction slides on this 340-20. The compensation system is programmed to automatically comp after dress.



 

Automatic gaging with closed loop feedback to the grinder. This 340-20 machine is a turnkey system grinding bearings. Incorporating gaging guarantees the parts stay on size.  The gage system automatically sends a signal to the compensation system when a comp is required to correct a trend of diameter growth.  The system is programmed with outer and inner limits and monitors the trend to maintain optimum diameter.  CRI's comp system can be programmed to automatically compensate after dressing and still give the operator the ability to manually override.

Synchronous manufacturing of motor armatures: This turnkey grinding system combines a #3 EA set-up as a buffer to remove the aluminum slag prior to grinding on a 340-20 Grinder. The parts are automatically loaded into the #3, de-burred, conveyor delivered to the 340-20, and then ground.  One operator handles the complete grinding process.


Power Roller Fixture for ring grinding: CRI has re-engineered the standard power roller fixture used to feed bearings and other rings in thrufeed grinding. It is now easy to adjust for part OD changes; a simple handwheel allows the operator quick adjustment. Shown on this 340-20, the power roller fixture starts the parts turning prior to entering the wheels and drives the parts into the machine.

 

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