Position measuring system

• US 20030159305A1
• Filed: 12/17/2002
• Published: 08/28/2003
• Est. Priority Date: 12/17/2001
• Status: Active Grant

• Current Assignee: Dr. Johannes Heidenhain GmbH
• Original Assignee: Dr. Johannes Heidenhain GmbH
• Inventors: Bauer, Rosemarie, Golowin, Andrea, Wahl, Claudia
• Granted Patent: US 6,826,847 B2
• Time in Patent Office: Days
• US Class Current: 33/707
• CPC Class Codes: F16C 29/005 Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
• CPC Class Codes: F16C 41/007 Encoders, e.g. parts with a plurality of alternating magnetic poles
• CPC Class Codes: G01D 5/34761 Protection devices, e.g. caps; Blowing devices

Abstract

A support body designed in accordance with a support body that includes a groove with lateral wall areas cut into a support body and a profiled unit. The profiled unit including a profiled area attached to both a cover flange with a laterally protruding contact area and a scale, wherein the profiled area is inserted in a releasably fixable manner into the groove from an open side of the groove, and while the profiled area is inserted into the groove, alignment of the scale takes place by contact of the protruding contact area against the lateral wall areas at a top of the groove.

Claims

1. A support body with a scale, comprising:

a groove with lateral wall areas cut into a support body;

a profiled unit comprising;

a profiled area attached to both a cover flange with a laterally protruding contact area and a scale, wherein said profiled area is inserted in a releasably fixable manner into said groove from an open side of said groove, and while said profiled area is inserted into said groove, alignment of said scale takes place by contact of said protruding contact area against said lateral wall areas at a top of said groove.

2. The support body with a scale in accordance with claim 1, wherein said scale is in the shape of a tape.

3. The support body with a scale in accordance with claim 1, wherein said profiled area is resilient and is placed fixingly against undercut areas of said groove.

4. The support body with a scale in accordance with claim 2, wherein said profiled area is resilient and is placed fixingly against undercut areas of said groove.

5. The support body with a scale in accordance with claim 1, wherein said profiled area is clipped or snapped into said groove.

6. The support body with a scale in accordance with claim 1, wherein said profiled area is a hollow profiled area with a resilient wall.

7. The support body with a scale in accordance with claim 6, wherein said resilient wall is embodied in such a way that, when a vacuum is applied to said hollow profiled area, said profiled area is inserted into said groove.

8. The support body with a scale in accordance with claim 7, wherein said resilient wall is embodied in such a way that, when an overpressure is applied to said hollow profiled area, said profiled area can be removed from said groove.

9. The support body with a scale in accordance with claim 6, wherein said scale is releasably provided inside said hollow profiled area.

10. The support body with a scale in accordance with claim 9, wherein when said profiled unit is inserted into said groove, said resilient wall fixes said scale in place inside said hollow profiled area.

11. The support body with a scale in accordance with claim 10, wherein said wall of said hollow profiled area of said profiled unit is embodied in such a way that, when an overpressure is applied, said scale can be pulled out of said profiled unit.

12. The support body with a scale in accordance with claim 6, wherein said profiled area is made of a metallic material.

13. The support body with a scale in accordance with claim 6, wherein said profiled area is made of plastic.

14. The support body with a scale in accordance with claim 1, wherein said cover flange is said scale.

15. A position measuring system, comprising:

a groove with lateral wall areas cut into a support body;

a profiled unit comprising;

a profiled area attached to both a cover flange with a laterally protruding contact area and a scale, wherein said profiled area is inserted in a releasably fixable manner into said groove from an open side of said groove, and while said profiled area is inserted into said groove, alignment of said scale takes place by contact of said protruding contact area against said lateral wall areas at a top of said groove; and

at least one sensor for scanning said scale.

16. A position measuring system, comprising:

a scale which is arranged in a groove provided on a profiled body;

a profiled unit comprising a hollow profiled area attached to a cover flange with a laterally protruding contact area, wherein said scale is releasably provided inside said hollow profiled area and said hollow profiled area is inserted into said groove from an open side of said groove in a manner where said scale is releasably fixed in place; and

wherein with said profiled unit inserted into said groove, alignment of said scale takes place by contact of said protruding contact area against a lateral edge area on a top of said groove;

at least one sensor which is moved along said scale and detects information stored on said scale; and

an evaluation unit that evaluates said information received from said at least one sensor.