Fixed cylindrical gear steel speed VW = 1200 mm / min, grinding depth AP = 50 μ m. The test is carried out under vs different grinding speeds. The influence of grinding speed of cylindrical gear steel on residual stress is shown in the figure.
The figure shows the effect of the change of grinding speed of cylindrical gear steel on the surface residual stress of 30crmnti material after grinding. It can be seen from the figure that the grinding surface is in the state of residual compressive stress after machining, and the value of residual compressive stress gradually decreases with the increase of grinding speed of cylindrical gear steel. This is because with the increase of grinding speed vs of cylindrical gear steel, the number of abrasive particles involved in grinding per unit time increases, and the grinding heat of cylindrical gear steel increases, resulting in the increase of tensile stress caused by grinding heat of cylindrical gear steel. At the same time, due to the weakening of grinding force of cylindrical gear steel and the reduction of extrusion effect on materials, the surface residual compressive stress caused by cold plastic deformation will continue to decrease, The combined action of the two makes the value of residual compressive stress show a downward trend.