Portable Power Tool

• US 20110190936A1
• Filed: 05/28/2009
• Published: 08/04/2011
• Est. Priority Date: 07/28/2008
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Platzer, Joachim, Koeder, Thilo, Koegel, Jan, Hoffmann, Ulli
• Application Number:
  US13/056,075
• Publication Number:
  US 20110190936A1
• Time in Patent Office: Days
• US Class Current: 700/259
• CPC Class Codes: B23Q 17/2233 for adjusting the tool relative to the workpiece
• CPC Class Codes: B23Q 17/24 using optics or electromagnetic waves
• CPC Class Codes: B25H 1/0021 Stands, supports or guiding devices for positioning portable tools or for securing them to the work B23B41/00 takes precedence
• CPC Class Codes: B25H 1/0092 by optical means
• CPC Class Codes: B27C 5/10 Portable hand-operated wood-milling machines; Routers
• CPC Class Codes: Y10T 409/306608 End mill [e.g., router, etc.]

Abstract

The present invention relates to a portable power tool (1) comprising a sensor unit adapted to detect a working mark (17, 18) provided on a work piece to be processed using the portable power tool (1), said mark defining a target position of the portable power tool (1), and a control unit for determining a deviation of the actual position from the target position based on the signal output of the sensor unit, wherein a positioning unit is provided that is adapted to make an automatic correction of the portable power tool (1) from the actual position to the target position, and or a signal output unit is provided for issuing signals that represent the determined deviation to a user for the purposes of making manual corrections.

Claims

1. A portable power tool having comprising:

a sensor unit configured to detect a working mark on a workpiece;

a control unit configured to determine a deviation of an actual position of the portable power tool from a required position based upon a first signal output of the sensor unit; and

at least one of (i) a positioning unit configured to perform an automatic correction of the portable power tool from the actual position to the required position based upon the first signal output, and (ii) a signal output unit configured to output second signals based on the determined deviation to assist a user in performing a manual correction.

2. The portable power tool as claimed in claim 1, wherein the sensor unit includes an optical recognition unit and the control unit includes a microcontroller.

3. The portable power tool as claimed in claim 2, wherein the optical recognition unit records an image in a linear manner, and the control unit determines the deviation based upon the image.

4. The portable power tool as claimed in claim 2, wherein the optical recognition unit includes an annular lens.

5. The portable power tool as claimed in claim 1, wherein the sensor unit is removable from the portable power tool.

6. The portable power tool as claimed in claim 1, wherein the positioning unit includes (i) an actuating drive for each of a plurality of independent positioning directions, and (ii) a corresponding controlling means for each actuating drive.

7. The portable power tool as claimed in claim 1, wherein the signal output unit includes a visual signal output apparatus.

8. The portable power tool as claimed in claim 7, wherein the visual signal output apparatus includes at least one of an LED and a display.

9. The portable power tool as claimed in claim 1, wherein the control unit controls together the positioning unit and a working portion of the portable power tool.

10. The portable power tool as claimed in claim 1, further comprising:

an aiming device configured to project a mark on a region of the workpiece,

wherein the sensor unit is configured to detect the projected mark.

11. The portable power tool as claimed in claim 10, wherein (i) the aiming device includes at least one light element and (ii) the projected mark of is a radiated light from the at least one light element.

12. The portable power tool as claimed in claim 10, wherein the aiming device includes a marking device configured to indicate the preferred direction of displacement of the portable power tool.

13. The portable power tool as claimed in claim 1, wherein the portable power tool has a path detecting apparatus configured to detect a displacement of the portable power tool on the workpiece.

14. The portable power tool as claimed in claim 1, further comprising:

a mechanical guide element configured to engage a groove or channel of the workpiece, or configured to be placed on an edge of the workpiece.

15. The portable power tool as claimed in claim 14, wherein the mechanical guide element is resiliently retractable into the portable power tool.

16. The portable power tool as claimed in claim 14, wherein the mechanical guide element is detachable from the portable power tool.