Profile grinding machine

A profile grinding machine comprising:

• a base;
• a work unit disposed on one side on the base and including a work table for gripping a work;
• and
• a stone unit disposed on another side on the base and including a stone rotating mechanism for holding and rotating a grinding stone about axis thereof,
• wherein the work unit includes first, second and third moving devices for supporting and moving the work table in an X-direction and a Y-direction intersecting with each other in a horizontal plane, and in a Z-direction normal to the horizontal plane, respectively;
• the stone unit includes a turning mechanism capable of turning the grinding stone about a vertical axis substantially coinciding with a leading end portion of the grinding stone, and the turning mechanism comprising a rotatable table having a rotational axis;
• and
• a numerical controller which controls the first, second and third moving devices in the work unit and the rotatable table in the stone unit,
• wherein the numerical controller controls the work unit such that the work is moved in the X-direction and the Y-direction in synchronism with movement of the work in the Z-direction, and
• the numerical controller controls the stone unit to rotate the rotating table at a predetermined angle on the rotational axis.