Measuring body for verifying geometrical deviations of a 3-axis machine tool, 3-axis machine tool, and method for compensating geometrical deviations of a 3-axis machine tool

A method for verifying and compensating geometrical deviations of a 3-axis machine tool comprising the steps:

• clamping of a measuring device in a tool spindle of the 3-axis machine tool,
• providing a measuring body for verifying geometrical deviations in a 3-axis machine tool comprising:
• a base plate,
• a first wall stationarily fixed on the base plate and projecting perpendicularly from the base plate, and
• a second wall stationarily fixed on the base plate and projecting perpendicularly from the base plate,
• wherein a first row of holes and a second row of holes are stationarily formed in the base plate,
• wherein the first wall, at an upper exposed region thereof, has a stepped region with a plurality of steps, and
• wherein the second wall, at an upper exposed region, has a stepped region with a plurality of steps,
• wherein the stationary fixing of the first wall and the second wall on the base plate maintains a fixed dimensional relationship between the first and second walls and between the first and second walls and the first and second rows of holes;
• wherein said first wall is arranged along a first edge of said base plate and wherein said second wall is arranged along a second edge of said base plate, wherein the first row of holes is arranged along a third edge of said base plate and wherein the second row of holes is arranged along a fourth edge of said base plate;
• wherein the first wall and the second wall are adjacent to each other at a corner of the base plate;
• arranging the measuring body in a work area of the 3-axis machine tool,
• moving to a plurality of positions of the measuring body to collect geometric actual data of the 3-axis machine tool using the measuring body,
• performing a nominal/actual comparison of the actual geometric data with stored nominal data of the measuring body to determine geometrical deviations, and
• compensating the geometrical deviations in a control unit of the 3-axis machine tool.