Method and apparatus for dressing an electroplated grinding wheel

A method of dressing an electroplated grinding wheel having a circular core and a single layer of hard abrasive grains held on the peripheral surface of said core by a plating layer, said method comprising steps of:

• rotating said grinding wheel about a first axis in a direction;
• rotating a circular role made of hard material about a second axis at a predetermined speed in a direction opposite to the rotational direction of said grinding wheel so that the difference in surface speed between said role and said grinding wheel becomes zero at a location at which said role contact with said grinding wheel, said first axis and second axis being in a common plane;
• and
• effecting relative infeed movement between said role and said grinding wheel in a radial direction of said grinding wheel so that said role is relatively fed toward the peripheral surface of said grinding wheel by a predetermined infeed amount from a radial position corresponding to the radial position of the peripheral surface of said grinding wheel.

A method of dressing an electroplated grinding wheel having a circular core and a single layer of hard abrasive grains held on the peripheral surface of said core by a plating layer, said method comprising steps of:

• rotating said grinding wheel about a first axis in a direction;
• rotating a circular role made of hard material about a second axis at a predetermined speed in a direction opposite to the rotational direction of said grinding wheel so that the difference in surface speed between said role and said grinding wheel becomes substantially zero at a location at which said role contact with said grinding wheel, said first axis and second axis being in a common plane;
• and
• effecting relative infeed movement between said role and said grinding wheel in a radial direction of said grinding wheel so that said role is relatively fed toward the peripheral surface of said grinding wheel by a predetermined infeed amount from a radial position corresponding to the radial position of the peripheral surface of said grinding wheel, said infeed amount being larger than half of the size difference in diameter between the upper grain size and the lower grain size of the abrasive grains.