The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 1984
Filed:
Dec. 01, 1982
Klaus Herzog, Oberkochen, DE;
Carl-Zeiss-Stiftung, Heidenheim, DE;
Abstract
The invention contemplates a measuring machine wherein a portal (2) is displaceable on a flat base plate (1) of granite. The bridge portion (3) of the portal (2) includes a guide rail (22) which is centrally fixed to the bridge portion (3) and extends in the x-direction of portal displacement. A separate superstructure (23) fixed to and upstanding from the base plate (1) provides support and guidance for the guide rail (22). In a manually operated embodiment, the operating knob for the use is arranged on a carriage which is displaceable along the bridge portion (3), in the y-direction. Since points relevant to displacement force application (e.g., drive, center of gravity, guidance) are at approximately the same elevation, bending forces can introduce essentially only two kinds of error, namely, a lateral offset (.DELTA.Y) of the portal and/or an incremental rotation of the portal about the vertical (z). The invention provides for detection of these errors via a measuring device (30, 35), coacting between a leg (4) of the portal (2) and a reference lateral alignment (34) of portal-leg displacement in the x-direction. And the detected errors are then included by calculation in the measurement result determined by the machine.