MEASURING ASSEMBLY

• US 20170336189A1
• Filed: 04/12/2017
• Published: 11/23/2017
• Est. Priority Date: 04/18/2016
• Status: Active Grant

• Current Assignee: Jenoptik Industrial Metrology Germany, GmbH (Jenoptik AG)
• Original Assignee: Jenoptik Industrial Metrology Germany, GmbH (Jenoptik AG)
• Inventors: VOLK, Raimund
• Granted Patent: US 10,408,597 B2
• Time in Patent Office: Days
• CPC Class Codes: G01B 21/20 for measuring contours or curvatures, e.g. determining profile
• CPC Class Codes: G01B 5/003 Measuring of motor parts
• CPC Class Codes: G01B 5/004 for measuring coordinates of points
• CPC Class Codes: G01B 5/20 for measuring contours or curvatures
• CPC Class Codes: G01B 5/201 for measuring roundness
• CPC Class Codes: G01B 5/28 for measuring roughness or irregularity of surfaces

Abstract

A measuring assembly for measuring the contour of a workpiece has a measuring probe that is pivotably supported and deflectable about a first axis (measuring axis) in order to contact a surface of the workpiece, and has a second axis that is associated with the workpiece. The first axis and the second axis are parallel or approximately parallel to one another for radially contacting a surface of the workpiece. A device for rotating the measuring probe and the workpiece relative to one another is provided, such that the measuring probe contacts the surface of the workpiece during the rotation, and a device for plotting the angular deflection of the measuring probe as a function of the particular rotational position of the workpiece relative to the measuring probe is provided.

Claims

1. A measuring assembly for measuring the contour of a workpiece, comprising:

a) a measuring probe that is pivotably supported and deflectable about a first axis in order tc contact a surface of the workpiece;

b) a second axis that is associated with the workpiece;

c) the first axis and the second axis are substantially parallel to one another for radially contacting a surface of the workpiece;

d) a means for rotating the measuring probe and the workpiece relative to one another are provided, such that the measuring probe contacts the surface of the workpiece during the rotation; and

e) a means for plotting the angular deflection of the measuring probe as a function of the rotational position of the workpiece relative to the measuring probe is provided.

2. The measuring assembly according to claim 1, wherein:

a) a rotary drive is associated with the workpiece in order to rotate the workpiece about the second axis during the measurement.

3. The measuring assembly according to claim 2, wherein:

a) the rotary drive is in drive connection with a holding device for holding the workpiece during the measurement.

4. The measuring assembly according to claim 3, wherein:

a) the holding device includes a clamping device for clamping the workpiece.

5. The measuring assembly according to claim 1, wherein:

a) the measuring probe includes a pivot lever that is pivotably supported about the first axis and on whose free end a probe element is situated.

6. The measuring assembly according to claim 5, wherein:

a) the probe element is one of a sphere and a cylinder whose axis of symmetry is substantially perpendicular to the first axis and a longitudinal direction of the pivot lever.

7. The measuring assembly according to claim 1, wherein:

a) a digital angle measuring system for detecting the angular position of the measuring probe is associated with the measuring probe.

8. The measuring assembly according to claim 1, wherein:

a) an adjustment device for adjusting the position of the measuring probe relative to the second axis is associated with the measuring probe.

9. The measuring assembly according to claim 8, wherein:

a) the adjustment device includes a pivot device, associated with the first axis of the measuring probe, for pivoting the measuring probe by substantially 90°

in such a way that in a first pivot position, the first axis and the second axis are substantially parallel to the radial contact with a surface of the workpiece, and in a second pivot position, the first axis is substantially perpendicular to the second axis in order to contact a surface of the workpiece facing in the direction of the second axis.

10. The measuring assembly according to claim 1, wherein:

a) means for setting a probe force for contacting the workpiece, using the measuring probe, is provided.

11. The measuring assembly according tc claim 1, wherein:

a) a measured value memory is provided for storing measured values that are formed by the particular angular deflection of the measuring probe as a function of the rotational position of the workpiece relative to the measuring probe, the measured value memory being in data transmission connection with an evaluation device in order tc reconstruct the contour of the workpiece from the stored measured values.

12. The measuring assembly according to claim 8, wherein:

a) the adjustment device adjusts the position of the measuring probe relative to the second axis for contacting the workpiece.

13. A measuring assembly for measuring the contour of a workpiece, comprising:

a) a measuring probe is provided that is pivotably supported and deflectable about a first axis in order to contact a surface of the workpiece;

b) a second axis that is associated with the workpiece;

c) the first axis and the second axis are substantially parallel to one another for radially contacting a surface of the workpiece;

d) a rotary drive for rotating the measuring probe and the workpiece relative to one another, such that the measuring probe contacts the surface of the workpiece during the rotation; and

e) of a plotter is provided, the plotter plots the angular deflection of the measuring probe as a function of the rotational position of the workpiece relative to the measuring probe.

14. The measuring assembly according to claim 13, wherein:

a) a rotary drive is associated with the workpiece in order to rotate the workpiece about the second axis during the measurement.

15. The measuring assembly according to claim 14, wherein:

a) the rotary drive is in drive connection with a holder which holds the workpiece during the measurement.

16. The measuring assembly according to claim 15, wherein:

a) the holder includes a clamp which clamps the workpiece.

17. The measuring assembly according to claim 13, wherein:

a) the measuring probe includes a pivot lever that is pivotably supported about the first axis and on whose free end a probe element is situated.