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How to eliminate the trouble of centerless grinding machine
Dec 26, 2019

Firstly,the reason whythe center of the parts is big and small

(1) The front and rear guide plates are uniformly inclined to the side of the grinding wheel

(2) The grinding wheel is trimmed into a waist drum shape


How to deal with the trouble  ofThe center of the parts is big and small

(1) Adjust the front and rear guide plate

(2) modify the grinding wheel, each modification allowance should not be too large


Secondly,the reson why there is a ring thread on the surface of the part

(1) The front and rear guide plates protrude the surface of the guide wheel so that the parts are scratched at the edge of the guide wheel at the outlet or at the inlet.

(2) The support ratio is too soft, and the cutting under grinding forms a protruding burr on the support surface, which is etched into a threaded line on the surface of the part.

(3) The coolant is not clean and there are chips or grains inside.

(4) At the outlet, due to the large amount of grinding, the grinding edge of the grinding wheel is scraped.

(5) The center of the part is lower than the center of the grinding wheel, which makes the sand chip and the cutting stick to the wool.

(6) The grinding wheel is dull.

(7) The grinding allowance is too much under the grinding or the grinding wheel or the grinding wheel.


The way to deal with the problem of a ring thread on the surface of the part

1) Adjust the front and rear guide plate.

(2) Replace the support wool with surface lubrication and high hardness.

(3) Replacement of coolant.

(4) The edge of the grinding wheel is fillet so that the 20mm at the exit of the part does not grind.

(5) Advance the center height of the part properly.

(6) Properly reduce wear and slow down the speed of modification.


Thirdly,the cause of a small piece off the front of the part is cutted

(1) The front guide plate protrudes from the surface of the guide wheel.

(2) the front end face of grinding wheel and guide wheel is not in a straight line, and there is a great difference between the front face of grinding wheel and guide wheel.

(3) too much grinding at the entrance.


How to get rid ofa small piece off the front of the part is cut

(1) move the front guide back a little bit.

(2) replace or modify the longest of the two.

(3) reduce the amount of grinding at the entrance.


Fourthly,the reason why the middle or tail of the part is cut out and the incision is rectangular

(1) the excellent guide wheel surface of the rear guide plate prevents the rotation and trudging surface grinding of the parts from continuing in progress.

(2) the rear support pad protrudes out too long and the polished parts are not dropped, which prevents the rotation and progress of the finished parts.


And the method to eliminate the problem ofthe middle or tail of the part is cut out and the incision is rectangular

(1) Move the rear guide plate back properly.

(2) Reinstall the support pad.

Fifthly,an angular or many microshaped mark of the incisionon the middle or tail of the part

(1) the rear guide plate lags behind the surface of the guide wheel.

(2) the center of the part is moving too high so that the part beats at the exit.

The elimination method to remove it :

(1) moves the rear guide plate slightly forward.

(2) properly reduce the height of the center of the part.


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