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:
Jan. 24, 2023
Filed:
Feb. 05, 2019
Reishauer Ag, Wallisellen, CH;
Daniel Cölestin Dimitri Rabadzijev, Opfikon, CH;
Thomas Keller, Gossau, CH;
REISHAUER AG, Wallisellen, CH;
Abstract
The invention relates to a device for monitoring the contact of a workpiece () or tool on a spindle () of a machine tool, which device has a contact surface () for the workpiece () or tool. At least one measurement nozzle () is arranged in the region of the contact surface in order to produce a fluid flow directed away from the contact surface (). Upstream of the measurement nozzle, the fluid flow is conducted through a vacuum nozzle, which can comprise a jet nozzle () and a collector nozzle (). When the fluid medium flows through the vacuum nozzle, the vacuum nozzle produces a negative pressure in a negative pressure chamber (). A pressure sensor () or pressure switch senses a measurement pressure (p) in the negative pressure chamber.