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Why is there concavity or protrusion on the surface when grinding crankshafts?

August 13, 2020

ManifestationsⅠ:

The crankshaft journal has a depression on the edge of the groove

The crankshaft journal has a depression on the edge of the groove

 

 

 Cause Analysis:

Incomplete when dressing the vitrified CBN grinding wheel。

 

 

 

Solution:

 

(1)Confirm the position of the grinding wheel and whether the grinding wheel is installed in place After replacing the vitrified CBN grinding wheel.

vitrified CBN grinding wheel.

 

(2)Adjust the wheel movement control switch to a reasonable position, and confirm that the position of the travel switch is stable.

More Super Hard Products Co., Ltd

 

 

(3)Adjust the position of the dressing roller and make a mark to prevent the position of the dressing roller from shifting.

 

 

 Manifestations Ⅱ:

The crankshaft journal has a protrusion on the edge of the groove.

 crankshaft journal

 

 

Cause Analysis:

 

(1)The vitrified CBN wheel have a collapse.

 

(2)The axial position of the grinding wheel or workpiece is offset.

  

(3)Improper rinsing of the grinding wheel causes local abrasive particles to fall off too quickly.

 

 crankshaft journal

 

 

 Solution:

 

(1)Regularly check the surface of the grinding wheel.

More Super Hard Products Co., Ltd

 

(2)Check the position of the grinding wheel to ensure that the dressing surface of the grinding wheel completely covers the journal surface after replacing the grinding wheel.

 crankshaft journal

 

 

(3)Confirm the position of the cooling nozzle to prevent improper washing of the grinding wheel causing the abrasive particles on the surface of the grinding wheel to fall off too quickly.

 crankshaft journal

 

https://www.morediamondwheel.com/products/products239.html

 
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