Machine tool monitoring device

• US 8,935,000 B2
• Filed: 08/31/2007
• Issued: 01/13/2015
• Est. Priority Date: 09/04/2006
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Krapf, Reiner, Braun, Heiko, Mahler, Michael, Hees, Alexander Werner
• Primary Examiner(s): Jarrett, Ryan A.
• Assistant Examiner(s): DUNN, DARRIN D
• Application Number:
  US12/439,648
• Publication Number:
  US 20100018830A1
• Time in Patent Office: 2,692 Days
• Field of Search: 83/72, 700/174, 700/17, 702/163, 702/27, 375/130, 375/132, 375/138, 375/239, 375/295, 340/435, 340/686.6, 340/572.1, 340/505, 340/573.7, 340/575, 343/700, 343/900, 342/21, 342/22, 342/27, 342/28, 342/72
• US Class Current: 700/174
• CPC Class Codes: B23Q 11/0082 by determining whether the operator is in a dangerous position B23Q17/2438 takes precedence
• CPC Class Codes: B23Q 17/20 for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
• CPC Class Codes: F16P 3/14 the means being photocells or other devices sensitive without mechanical contact
• CPC Class Codes: F16P 3/145 using magnetic technology
• CPC Class Codes: F16P 3/147 using electro-magnetic technology, e.g. tags or radar
• CPC Class Codes: F16P 3/148 using capacitive technology
• CPC Class Codes: G01S 13/0209 Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
• CPC Class Codes: G01S 13/04 Systems determining presence of a target based on relative movement of target G01S13/56
• CPC Class Codes: G01S 13/88 Radar or analogous systems specially adapted for specific applications electromagnetic prospecting or detecting of objects, e.g. near-field detection, G01V3/00
• CPC Class Codes: G01S 7/411 Identification of targets based on measurements of radar reflectivity G01S7/415 takes precedence
• CPC Class Codes: Y10T 83/141 With means to monitor and control operation [e.g., self-regulating means]

Abstract

The invention relates to a machine tool monitoring device. It is proposed that the machine tool monitoring device comprises at least one signal unit for an ultra wide band operation.

Claims

1. A machine tool monitoring device, comprising at least one signal unit for an ultra-wide band operation, the signal unit including:

an ultra wide band radar sensor; and

at least one further sensor, wherein the at least one further sensor is one of;

a capacitive sensor;

an inductive sensor;

a mechanic sensor; and

an optical sensor,

wherein the ultra wide band radar sensor and the at least one further sensor are arranged in a machine tool basic assembly position on both a first and second side of a machine tool work surface for placing a work piece; and

wherein the ultra wide band radar sensor and the at least one further sensor comprise a sensor system that is configured for detecting a first signal part that is transmitted through a work piece for processing and a second signal part that is reflected from the work piece for processing;

a regulating unit configured to;

accept threshold values for a plurality of work parameters from an operator related; and

notify the operator with an acoustic signal when at least one of the plurality of work parameters reaches a corresponding threshold value;

wherein the ultra wide band radar sensor is used to detect the plurality of work parameters simultaneously, the detected work parameters including at least one of a position of a work piece and a position of a tool portion of the machine tool, and

wherein the ultra wide band radar sensor is used to detect at least one of;

human and animal tissue in a predetermined danger zone via the at least one ultra wide band radar sensor.

2. The machine tool monitoring device of claim 1, wherein the at least one ultra wide band radar sensor is arranged in a machine tool basic assembly position below a machine tool work surface for placing a work piece.

3. The machine tool monitoring device of claim 1, wherein the at least one further sensor is arranged in a machine tool basic assembly position above a machine tool work surface for placing a work piece.

4. The machine tool monitoring device of claim 1, further comprising at least one additional sensor in addition to the sensor system.

5. The machine tool monitoring device of claim 1, further comprising a unit that is configured for bundling a radiation of the at least one signal unit.

6. The machine tool monitoring device of claim 1, wherein the at least one signal unit comprises a tool that determines a duty cycle for a transmitting signal in at least one energy saving mode.

7. The machine tool monitoring device of claim 1, wherein the at least one signal unit comprises a listen-before-talk function.

8. The machine tool monitoring device of claim 1, wherein the at least one signal unit is configured for processing a signal that has a series of pulses.

9. The machine tool monitoring device of claim 1, wherein the at least one signal unit is configured for producing a signal with the aid of a stepped frequency modulation.

10. The machine tool monitoring device of claim 1, wherein the at least one signal unit comprises an arithmetic unit that is configured to assign a detected signal to an application situation by a signal processing that is based on at least one of:

a fuzzy logic; and

a neuronal logic.

11. The machine tool monitoring device of claim 1, wherein the at least one signal unit comprises a data base, wherein an application situation is assigned in the data base to at least one signal pattern.

12. The machine tool monitoring device of claim 1, wherein the at least one signal unit comprises a programmable data base, wherein an application situation at a processing is assigned in the data base to a procedure for changing the processing.

13. The machine tool monitoring device of claim 1, wherein the at least one signal unit is configured for determining a work progress at a work piece processing.

14. The machine tool monitoring device of claim 1, wherein the at least one signal unit is configured for determining a distance.

15. The machine tool monitoring device of claim 1, wherein the at least one signal unit is configured for determining a speed of a work piece for processing.

16. The machine tool monitoring device of claim 1, further comprising an electronic output unit that is configured for an output of monitoring information to an operator.

17. The machine tool monitoring device of claim 1, further comprising an electronic input unit that is configured for an input of at least one monitoring information.

18. The machine tool monitoring device of claim 1, further comprising an actuator engineering unit for carrying out a security measure that is in a functional connection with the at least one signal unit.

19. The machine tool monitoring device of claim 1, wherein the at least one signal unit operates in at least one operating mode for an evaluation of at least one radiation from a group of at least two radiation parts, wherein the at least two radiation parts are spatially separated from each other due to a reflection of a signal at the at least two interfaces of a medium.

20. The machine tool monitoring device of claim 1, wherein the machine tool monitoring device is arranged on a machine tool.