PROCEDURE FOR OPERATING A MACHINE TOOL AND MACHINE TOOL FOR THIS PURPOSE

• US 20100032178A1
• Filed: 08/05/2009
• Published: 02/11/2010
• Est. Priority Date: 08/07/2008
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Platzer, Joachim, Koeder, Thilo, Hoffmann, Ulli
• Application Number:
  US12/536,130
• Publication Number:
  US 20100032178A1
• Time in Patent Office: Days
• US Class Current: 173/1
• CPC Class Codes: B23D 49/167 with means to adjust the guide plate or with means to adjust the plane in which the saw blade moves
• CPC Class Codes: B23D 59/002 for the position of the saw blade mounting for swiveling or tilting a circular saw blade B27B5/36; portable power-driven circular saws with adjustment for cutting depth or amount of tilting B27B9/02

Abstract

A machine tool, in particular in a handheld configuration, that is equipped with tools for a sensory detection of a trajectory that serves as a guideline and is detected in characteristic values and read in, alternatively to a programmed trajectory. The characteristic values that are on a side of the machine tool are converted into control signals for a working line that is tracked mark-free.

Claims

1. A method of operating a handheld machine tool comprising a sensory tool for a sensory detection of a reference characteristic that describes a default trajectory on a side of a work piece as a route guidance and for an arithmetic conversion of characteristic values that correspond with the reference characteristic into control signals, the method comprising:

detecting a default trajectory for the machine tool by the characteristic values;

reading in the default trajectory; and

providing a working line for a working tool to be driven along and that corresponds with the default trajectory by control signals that correspond with the characteristic values.

2. A method of operating a machine tool comprising a sensory tool for a sensory detection of reference characteristics on a side of a work piece and for an arithmetic conversion of the reference characteristics into characteristic values for control signals, the method comprising:

presenting a trajectory programmed in characteristic values for the machine tool as a route guidance, wherein the control signals that correspond with the characteristic values provide a working line for the working tool that has to be driven along and that corresponds with the trajectory.

3. The method of claim 2, further comprising detecting an advance speed along the working line with sensors, wherein a working speed of working tool is adjusted adaptively to the advance speed.

4. The method of claim 3, further comprising adjusting the working speed by at least one of:

a change of a number of strokes; and

a rotational speed of the working tool.

5. A method of operating a handheld machine tool comprising a working tool and sensory tools for a sensory detection of reference characteristics visible on a side of a work piece as characteristic values and for an arithmetic conversion of the characteristic values into control signals, the method comprising:

detecting the reference characteristics on the side of the work piece in an area of a starting point;

determining a position of the machine tool to the work piece related to a reference position that is provided by the reference characteristics and by a display of the position of the machine tool to the reference position;

displaying a working line to be driven along; and

controlling the working tool that is oriented towards the working line.

6. The method of claim 5, further comprising, with an oriented direction on the side of the user of the machine tool related to a desired working direction, detecting the reference characteristics on the side of the work piece in the area of the starting point on the side of the work piece;

detecting the position of the machine tool to the reference characteristic;

detecting the position of the working line that has to be driven along to the reference characteristic in the area of the starting point;

determining an advance direction of the machine tool that is oriented towards the working line; and

displaying the advance direction of the machine tool.

7. The method of claim 5, further comprising, with an oriented direction on the side of the user of the machine tool related to a desired working direction,

detecting the starting point of the working tool of the machine tool on the side of the work piece;

detecting the reference characteristics on the side of the work piece in the area of the starting point;

detecting the position of the machine tool to the reference characteristics;

detecting the position of the working line that has to be driven along to the reference characteristics in the starting point;

determining the orientation of the machine tool in the starting point that corresponds with the orientation of working line; and

controlling the working tool corresponding with the determined orientation.

8. The method of claim 5, wherein the working line is a default working line on the side of the work piece.

9. The method of claim 5, wherein the working line is a default working line on the side of the machine tool.

10. A handheld machine tool, comprising:

a working area for a working tool to be positioned at a work piece;

one or more optical tools for a sensory detection of reference characteristics that are provided on a side of the work piece; and

an arithmetic unit and a control unit that are configured for;

processing characteristics values that correspond with the reference characteristics,

compensating the characteristic values with values that describe a programmed default trajectory, and

creating control signals for operation of the machine tool with an orientation of the working tool towards a working line to be driven along and that corresponds with the default trajectory.

11. The handheld machine tool of claim 10, further comprising a signal-beamer that illustrates the working line.

12. The handheld machine tool of claim 10, wherein the one or more tools for the sensory detection are created by a camera.

13. The handheld machine tool of claim 10, wherein the one or more tools for the sensory detection are created by mouse sensors that are arranged in working direction moved up towards the working tool and pointed towards the work piece.

14. The handheld machine tool claim 10, wherein the machine tool is a jigsaw comprising an adjustable saw blade that is stroke driven and rotatable around a longitudinal axis.

15. The handheld machine tool of claim 14, wherein the saw blade is adjusted by a power-operated rotary drive that is controlled by the control signals.