Arrangement for monitoring tools when machining rotationally symmetric workpieces

Abstract

A multi-loop antenna and an RFID system are used for monitoring tools when machining rotationally symmetric workpieces. A multi-loop antenna is arranged on a tool carrier near a rotationally symmetric tool so that multi-loop antenna encloses the rotationally symmetric tool and the rotationally symmetric tool carries an RFID transponder. The position of this RFID transponder is arranged on the rotationally symmetric tool so that it is arranged in the electromagnetic ring field of the multi-loop antenna. The multi-loop antenna is arranged on the tool carrier so that it is possible to query the RFID transponder on the rotationally symmetric tool in any position while in motion and when at rest.

Claims

1. In an electrode cap milling device, a multi-loop antenna for monitoring a milling tool, comprising: a tool carrier for carrying the milling tool; a plurality of stratifications of electrically conductive layers and insulating layers separating said electrically conducting layers, said plurality of stratifications disposed in said tool carrier; and said electrically conductive layers being connected to one another; and an RFID system for monitoring the milling tool, said RFID system including an RFID transponder configured for being carried on the milling tool.

2. The multi-loop antenna according to claim 1, wherein said multi-loop antenna is configured to describe and read out said RFID transponder carried on the milling tool, thus enabling electronic control and evaluation of a selection and targeted information of the milling tool.

3. The multi-loop antenna according to claim 2, wherein the targeted information is selected from the group consisting of a type of milling tool, a serial number of the milling tool, times of use of the milling tool, and idle times of the milling tool.

4. The multi-loop antenna according to claim 2, wherein said multi-loop antenna encloses said RFID transponder.

5. In an electrode cap milling device, a device for monitoring a milling tool, comprising: a multi-loop antenna arranged on a tool carrier in a vicinity of a rotationally symmetric milling tool, said multi-loop antenna enclosing the rotationally symmetric milling tool and being configured to generate an electromagnetic ring field; an RFID transponder carried on the rotationally symmetric milling tool and in a position within the electromagnetic ring field of said multi-loop antenna; and said multi-loop antenna being arranged on the tool carrier to enable said RFID transponder on the rotationally symmetric milling tool to be queried in any position while in motion and when at rest.

6. The multi-loop antenna according to claim 5, wherein said multi-loop antenna is configured to describe and read out said RFID transponder of the rotationally symmetric milling tool, thus enabling electronic control and evaluation of a selection and targeted information of the milling tool.

7. The multi-loop antenna according to claim 6, wherein the targeted information is selected from the group consisting of a type of milling tool, a serial number of the milling tool, times of use of the milling tool, and idle times of the milling tool.

8. An arrangement in electrode cap milling devices for monitoring milling tools when machining rotationally symmetric workpieces, the arrangement comprising: a multi-layered, ring-shaped multi-loop antenna; and an RFID system for monitoring rotationally symmetric milling tools when machining the rotationally symmetric workpieces, said RFID system including an RFID transponder carried on the rotationally symmetric milling tool and being configured to communicate with said multi-loop antenna; said multi-loop antenna being arranged on a tool carrier in a vicinity of the rotationally symmetric milling tool and to enclose the rotationally symmetric milling tool; said RFID transponder being disposed in a position on the rotationally symmetric milling tool within in an electromagnetic ring field of the multi-loop antenna; and said multi-loop antenna being arranged on the tool carrier to enable querying said RFID transponder on the rotationally symmetric milling tool in any position when in motion and when at rest.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) FIG. 1 is a perspective view of a multiloop antenna according to the invention; and

(2) FIG. 2 is a diagrammatic section view of the antenna structure.

(3) FIG. 1 shows the arrangement of the multi-loop antenna 1 according to the invention in a device for metalworking, especially for the machining of rotationally symmetric metallic workpieces, using an electrode cap milling machine as an example.

DETAILED DESCRIPTION OF THE INVENTION

(4) A multi-loop antenna 1 is arranged on a tool carrier 2 near a rotationally symmetric tool 3, an electrode cap milling tool in the example, so that the multi-antenna 1 encloses the rotationally symmetric tool 3.

(5) In this case the multi-loop antenna 1 is connected to the process monitoring and control technology via an antenna connection 5.

(6) As seen in FIG. 2, the multi-loop antenna 1 includes at least two electrically conductive layers 6 connected by a connection 8. The at least two electrically conductive layers 6 are separated by an insulating layer 7. In addition, the antenna used has one or more insulating layers 7 above and below the antenna structure, and thus on the potential contact surfaces.

(7) An RFID transponder 4 is mounted on the rotationally symmetric tool 3.

(8) RFID refers to a technology for transmitter-receiver systems, which is used for the automatic and contactless authentication and localization of objects and living beings using radio waves.

(9) An RFID system comprises a transponder, which is located on or in the object or living being and which contains an identification code, and a reader for reading this identification code.

(10) The position of the RFID transponder 4 is arranged on the rotationally symmetric tool 3 so that it is located within the electromagnetic ring field of the multi-loop antenna 1.

(11) The multi-loop antenna 1 is arranged on the tool carrier 2 so that it is possible to query the RFID transponder 4 on the rotationally symmetric component in any position, when in motion, and when at rest.

(12) To monitor the rotationally symmetric tool 3, it is possible to write to and read from RFID transponder 4 with this multi-loop antenna 1.

(13) This not only makes it possible to detect the presence of the rotationally symmetric tool 3, but also to read and write specific information on the RFID transponder 4 of the rotationally symmetric tool 3, and thus to monitor it.

(14) In particular, this is possible for process monitoring purposes, and it is advantageous that information such as the tool type, serial number of the tool, operating times, downtimes can be read, as well as, for example, to read the tool type of previously used tool, the serial number of the previously used tool, the operating times of the previously used tool, and the downtimes of the previously used tool.

(15) This information to be monitored and retrieved enables direct process monitoring and control of the current tool as well as data that is advantageous for process monitoring for the statistical recording and evaluation of process-relevant data and information.