Adjustment device for a measuring head

1. An adjustment arrangement, the adjustment arrangement being configured to simplify calibration of a measurement probe ( 3 ) supported by a measuring head ( 2 ) in a coordinate measuring machine ( 1 ), the adjustment arrangement comprising:

means for determining a measured position of a probe ball ( 7 ); and

means for turning or displacing, or both, the probe ball ( 7 ) to a desired orientation with the probe ball ( 7 ) being in contact with a calibration seating ( 9 ), in order to determine a position of the probe ball in the desired orientation, whereby an offset of the probe ball ( 7 ) can be determined,

wherein the calibration seating ( 9 ) is formed from three balls ( 10 ) arranged in a triangle, the calibration seating ( 9 ) is arranged in a holder ( 11 ) on which the balls ( 10 ) are mounted, and a leaf spring ( 12 ) is attached to the holder ( 11 ) and arranged such that the leaf spring ( 12 ) presses the probe ball ( 7 ) against the seating formed by the three balls ( 10 ) when the probe ball is introduced into the calibration seating ( 9 ).

2. The adjustment arrangement according to claim 1 , wherein the coordinate measuring machine ( 1 ) comprises a portal ( 4 ) that can be displaced in a x-direction, which in turn supports a rod ( 6 ) that can be displaced in a z-direction, the measuring head ( 2 ) being mounted on a lower end of the rod ( 6 ).

3. The adjustment arrangement according to claim 2 , wherein the measuring head ( 2 ) can be rotated around both a vertical axis φ and a horizontal axis θ, such that the measurement probe ( 3 ) can be turned and such that the ball ( 7 ) can be brought into contact with each point on an object placed onto a measurement table ( 8 ) of the coordinate measuring machine ( 1 ).

4. The adjustment arrangement according to claim 1 , wherein the measuring head ( 2 ) can be locked and released.

5. The adjustment arrangement according to claim 1 , wherein the measuring head ( 2 ) can be locked and released with an electromagnet.

6. An adjustment arrangement, the adjustment arrangement being configured to simplify calibration of a measurement probe ( 3 ) supported by a measuring head ( 2 ) in a coordinate measuring machine ( 1 ), the adjustment arrangement comprising:

a probe ball ( 7 ) configured to determine a measured position, the probe ball being adapted to turn or displace, or both, to a desired orientation with the probe ball ( 7 ) being in contact with a calibration seating ( 9 ), in order to determine a position of the probe ball in the desired orientation, whereby an offset of the probe ball ( 7 ) can be determined,

wherein the calibration seating ( 9 ) is formed from three balls ( 10 ) arranged in a triangle, the calibration seating ( 9 ) is arranged in a holder ( 11 ) on which the balls ( 10 ) are mounted, and a leaf spring ( 12 ) is attached to the holder ( 11 ) and arranged such that the leaf spring ( 12 ) presses the probe ball ( 7 ) against the seating formed by the three balls ( 10 ) when the probe ball is introduced into the calibration seating ( 9 ).

7. The adjustment arrangement according to claim 6 , wherein the coordinate measuring machine ( 1 ) comprises a portal ( 4 ) that can be displaced in a x-direction, which in turn supports a rod ( 6 ) that can be displaced in a z-direction, the measuring head ( 2 ) being mounted on a lower end of the rod ( 6 ).

8. The adjustment arrangement according to claim 7 , wherein the measuring head ( 2 ) can be rotated around both a vertical axis φ and a horizontal axis θ, such that the measurement probe ( 3 ) can be turned and such that the ball ( 7 ) can be brought into contact with each point on an object placed onto a measurement table ( 8 ) of the coordinate measuring machine ( 1 ).

9. The adjustment arrangement according to claim 6 , wherein the measuring head ( 2 ) can be locked and released.

10. The adjustment arrangement according to claim 6 , wherein the measuring head ( 2 ) can be locked and released with an electromagnet.