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Pressure controlled grinding- the new way

Chapter: 1. Who ? Has pressure controlled grinding 2. Why ? Has pressure controlled grinding benefits Comparison : stiff grinding versus pressure controlled 3. How ? Does it work Technical explanation : sketch and drawings 4. Where ? Can it be incorporated

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Pressure controlled grinding- the new way

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  1. Chapter: 1. Who ? Has pressure controlled grinding 2. Why ? Has pressure controlled grinding benefits Comparison : stiff grinding versus pressure controlled 3. How ? Does it work Technical explanation : sketch and drawings 4. Where ? Can it be incorporated Video presentation : Customer Phoenix Tube / USA Video examples of machinery : round, flat, center type Pressure controlled grinding- the new way

  2. Who ? Has pressure controlled grinding • Customers with high demand on constant surface finish ( like ornamental stainless, guide rails with bearing surface quality ) • Customers with tight tolerances which have to be maintained ( tolerance compliance for hydraulic components ) • Customers in Stainless steel, Steel and Chromium plating industry ( bend and unround tubing large size, critical layer thickness of plated products ) • Customers with curved profiles ( free axis polishing at implants, car wheels, car interiors )

  3. Who ? Has pressure controlled grinding • US companies like : Sandvik, Schoeller Bleckmann ( Tubacex ), Greenville Tube Phoenix Tube, Salem Tube, Romac Metals, Royal Precision, Industrial Hard Chrome, Scot Industries, Savic Superchrome... • Worldwide companies like: Thyssen, Schmolz & Bickenbach, Avesta, AB Sandvik, Arfa, Voss Tubacex, Butting, Fischer, Kieselmann, Metalfinish, Schoeller Bleckmann, Ugine, Vallourec, Framatome, British Steel, Shanghai Stainless, Stappert ...

  4. Why ? Has pressure controlled grinding benefits • Comparison : stiff grinding versus pressure controlled grinding Stiff system with slides The head is in a fixed position and can not follow the contour of a not perfectly round tube. Bend tubes are pressed through multiple stations and cause high variations in the grinding pressure seen on the ammeter which shows the load of the grinding motor Pressure controlled with pivot point The head is flexible mounted on a pivot point. By air cylinder it can follow the surface of a unround tube. The regulating wheel is mounted the same way and insures a self centering of the tube. Constant grinding pressure can be seen on the constant load of the motor.

  5. Why ? Has pressure controlled grinding benefits • Comparison : stiff grinding versus pressure controlled grinding Stiff system with slides Pressure variations cause reduced belt live Variations in the finish Variations in the tube speed as it passes through the stations ( Spinning of tubes ) Variations in the noise level Pressure controlled with pivot point Smooth run, improved belt life with economic efficiency Constant stock removal and finish over the entire tube surface Reduced noise level due to a constant noise level Higher grinding speeds possible No risk of overloading belt and motors

  6. How ? Does it work • Technical explanation

  7. How ? Does it work • Pressure controlled contour adjustment for bend or conical tubes • Example for stainless steel tube polishing

  8. How ? Does it work • Pressure loaded pinch rolls for tube transport

  9. How ? Does it work • Pinch rolls positioned beside each polishing head

  10. How ? Does it work • Secure transport of the tube due to pinch rolls each side of the grinding head

  11. How ? In centerless polishing - horizontal stations

  12. How ? In centerless polishing - vertical stations

  13. How ? In flat polishing - vertical stations

  14. How ? In double side flat polishing – pivot point stations

  15. Where ? Can it be incorporated • Centerless polishing machines • Center type polishing machines • Flat polishing machine • Superfinishing machines • Shape polishing machines • Robot finishing cells • Back stand machines

  16. Grinding of tubes for customer Phoenix Tube / USA PLC controlled with memory for tube dimensions and grinding sequence 12 station grinding,polishing and sleeving machine for tubes and bars Applications

  17. Centerless pressure controlled polishing Grinding of stainless steel tubing of large diameters WUMAG / GERMANY 2 Station grinding and polishing machine with double head SIEMENS - PLC controlled

  18. Flat pressure controlled polishing • Flat grinding of flat stainless steel bars or tubes • with return conveyor for 6“ x 6“ parts • Inside view of grinding head

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