US 7,500,320 B2
Position measuring arrangement and procedure for the assembly of a position measuring arrangement
Andreas Schroter, Traunstein (Germany); Thomas Jäger, Trostberg (Germany); and Waltraud Aichhorn, Palling (Germany)
Assigned to Dr. Johannes Heidenhain GmbH, Traunreut (Germany)
Filed on Jul. 30, 2007, as Appl. No. 11/881,904.
Claims priority of application No. 10 2006 036 746 (DE), filed on Aug. 05, 2006.
Prior Publication US 2008/0028629 A1, Feb. 07, 2008
Int. Cl. G01B 21/24 (2006.01)
U.S. Cl. 33—613  [33/706; 33/1 PT] 9 Claims
OG exemplary drawing
 
1. A position measuring arrangement for measuring the relative position of a first object with respect to a second object, the position measuring arrangement comprising:
a first unit comprising a graduation support and fastened on said first object;
a second unit comprising a scanning element for scanning a graduation of said graduation support at a preset scanning distance (A), wherein said second unit is fastened on said second object;
an alignment element placed between a first limit stop face of said first unit and a second limit stop face of said second unit, wherein said alignment element fixes a position relationship between said scanning element and said graduation support in a direction of said preset scanning distance (A) for mounting on said first object and said second object to be measured, wherein either said first limit stop face or said second limit stop face is defined by a positionable limit stop element, and wherein said limit stop element is positioned in said direction of said scanning distance (A) and is fixed on either said first unit, if said first limit stop face is defined by said positionable limit stop element, or said second unit, if said second limit stop face is defined by said positionable limit stop element, after positioning.