US 11,725,923 B2
Method for positioning a body having an angle scale
Alois Bartlechner, Palling (DE); Sebastian Gruber, Kirchdorf (DE); Jürgen Hertenberger, Aich (DE); and Karsten Sändig, Palling (DE)
Assigned to DR. JOHANNES HEIDENHAIN GmbH, Traunreut (DE)
Filed by DR. JOHANNES HEIDENHAIN GmbH, Traunreut (DE)
Filed on Jun. 2, 2022, as Appl. No. 17/830,844.
Claims priority of application No. 21177908 (EP), filed on Jun. 7, 2021.
Prior Publication US 2022/0390221 A1, Dec. 8, 2022
Int. Cl. G01B 5/25 (2006.01); G01B 3/22 (2006.01)
CPC G01B 5/25 (2013.01) [G01B 3/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for positioning a body that includes a surface extending along a circular arc and an angular scale, comprising:
attaching the body to a machine part that is adapted to pivot about a stationary axis;
attaching a stationary, first distance gauge adapted to determine a first value of a distance between a first stationary point and the surface of the body;
attaching a stationary, second distance gauge adapted to determine a second value of a distance between a second stationary point and the surface of the body, the first distance gauge being positioned offset relative to the second distance gauge by an angle in a circumferential direction with respect to the surface of the body;
determining three first distance values and three second distance values at three predetermined angular positions of the machine part that are different from each other;
calculating a first offset value based on the three first distance values and corresponding angular positions, and a second offset value based on the three second distance values and the corresponding angular positions; and
shifting the body relative to the machine part, until the first offset value is output by the first distance gauge and the second offset value is output by the second distance gauge within permissible tolerances.