Hand-held jigsaw

• US 8,826,548 B2
• Filed: 09/20/2007
• Issued: 09/09/2014
• Est. Priority Date: 11/09/2006
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Kaiser, Hans, Marx, Klaus, Niehsen, Wolfgang, Koeder, Thilo, Flinspach, Gunter, Frangen, Joachim, Platzer, Joachim, Delfini, Stefano
• Primary Examiner(s): Peterson, Kenneth E.
• Assistant Examiner(s): DAVIES, SAMUEL ALLEN
• Application Number:
  US12/281,442
• Publication Number:
  US 20090025233A1
• Time in Patent Office: 2,546 Days
• Field of Search: 303/92, 303/93, 303/94, 700/279, 144/48.5, 144/154.5, 83/74, 83/75, 83/755, 83/766, 83/767, 83/768, 833/64, 833/65, 833/68, 833/71, 835/20, 382/141, 382/152
• US Class Current: 30/392
• 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 51/02 of beds; of guiding arrangements for work-tables or saw carriers; of frames
• CPC Class Codes: B23D 59/002 for the position of the saw blade B27B5/36 and B27B9/02 take precedence
• CPC Class Codes: Y10T 83/531 With plural work-sensing means
• CPC Class Codes: Y10T 83/828 With illuminating or viewing means for work

Abstract

A hand-held jigsaw includes a saw blade and control element for automating a tracking the saw blade, the hand-held jigsaw, or both along layout lines. A sensor, preferably a camera unit, detects a layout line provided on a work piece.

Claims

1. A hand-held jigsaw, comprising:

a saw blade;

control means for automating a tracking of an element selected from the group consisting of a saw blade, the hand-held jigsaw, and both along layout lines;

a sensor comprising a camera unit configured to use analog image processing to divide a monitoring region into individual search lines and, to detect individual points of layout lines provided on a workpiece;

optical mouse sensors for detecting movement and speed data;

an actuator unit;

a processor unit for receiving and processing sensor information, including movement and speed data, image data and data associated with the detected points and, based on the points, image data, movement and speed data interpolates and adapts an actual path curve or spline, generates control signals and transmits said control signals to the actuator unit for controlling said saw blade speed and movement direction and, by adjustment of a saw blade angle, wherein the saw blade angle represents an angle by which the saw blade is moveable around a longitudinal axis of the saw blade, and wherein said longitudinal axis of said saw blade extends parallel to a main span direction of the saw blade.

2. The hand-held jigsaw as recited in claim 1, wherein the actuator unit adapts the saw blade angle as a function of an overlaid user guidance of a hand-held jigsaw.

3. The hand-held jigsaw as recited claim 1, wherein the actuator unit is a mechanical/actuator system for adjusting the saw blade angle of the saw blade.

4. The hand-held jigsaw as recited in claim 1, further comprising an actuator with a regulator.

5. The hand-held jigsaw as recited in claim 4, wherein the actuator with the regulator is a unit selected from the group consisting of a servo motor, a step motor and a piezoelectric actuator.

6. The hand-held jigsaw as recited in claim 1, wherein means that permit an automation of the element is switchable.

7. The hand-held jigsaw as recited in claim 1, further comprising a display element provided to display a recommended advancing direction.

8. The hand-held jigsaw as recited in claim 7, wherein the display element is selected from the group consisting of LEDs, a display and both.

9. The hand-held jigsaw at least as recited in claim 1, wherein the saw blade is pivotable and drivable by the control means.

10. The hand-held jigsaw at least as recited in claim 1, wherein the hand-held jigsaw is a scrolling jigsaw.