Machining tool for grinding a workpiece

A machining tool for grinding a workpiece in a machine tool, comprising:

• at least a first machining portion having particles of a harder material than the material of the workpiece to be machined, the particles being arranged in a binder;
• and
• at least a second machining portion having particles of larger or smaller diameter than the first machining portion, and of a harder material than the material of the workpiece to be machined, the particles of the second machining portion being arranged in an identical binder to that of the first machining portion or in a different binder,
• wherein the first and second machining portions are annular bands continuously formed around a circumference of a same tool body,
• wherein said first and second machining portions are formed by first and second abrasive bands, each of the first and second abrasive bands are arranged on top of a same planar front outer face of the tool body,
• wherein a width of the first abrasive band in a direction along the top of the planar front outer face of the tool body is a same width as the second abrasive band along the top of the planar front outer face of the tool body, and
• wherein a thickness of the first abrasive band from the planar front outer face of the tool body to a height of the first abrasive band is different from a thickness of the second abrasive band from the planar front outer face of the tool body to a height of the second abrasive band.