jigsaw

A jigsaw and saw blade technology, which is applied in the field of hand-held jigsaws, can solve the problems that the saw blade can not cut freely, the effect of free cutting is weakened, and whether the teeth are staggered or not can be realized independently.

Inactive Publication Date: 2019-05-14
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A disadvantage of the prior art is that the free cutting of the saw blade, which is necessary for easy and precise sawing of the corresponding saw grooves, cannot be achieved independently of the presence or absence of staggering of the teeth
Furthermore, after prolonged use of the saw blade, the corresponding free-cutting effect of the interlaced saw teeth is impaired due to wear, which is particularly disadvantageous for jig sawing.

Method used

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Embodiment Construction

[0030] figure 1 A hand-held jigsaw 10 is shown, which is designed, for example, in the manner of a semi-automatic hand-held jigsaw 11 and has a tool housing 14 provided with a handle 12 in the form of a handle. The semiautomatic jigsaw 11 is preferably provided with a flexible electrical connection 16 for a networked power supply. It should be noted, however, that the invention is not limited to hand-held semi-automatic jigsaws 11 operable over a network, but can also be applied to all types of jigsaws operable without a network, for powering these jigsaws The saw can also be connected, for example mechanically and electrically, to an associated battery pack. Furthermore, it should be noted that the invention is also not limited to jigsaws with a tool housing forming a grip handle, but can also be applied to jigsaws with a bar-shaped tool housing.

[0031] By way of example, a drive motor 20 for driving a drive shaft 22 is arranged in the tool housing 14 . The drive motor 2...

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Abstract

A hand-guided jig saw includes a tool housing that houses a drive motor. The drive motor is configured to drive a reciprocating transmission that drives a reciprocating unit connected to a tool receptacle. A vertical axis of the tool receptacle saw is configured to receive a saw blade. In order to enable at least partial free cutting of the saw blade for forming a sawing passage in a workpiece, the tool receptacle, via an electromechanical actuating system, is pivotable by a pre-defined angle about a vertical axis. A pivoting movement of the saw blade is superimposed by at least a reciprocating movement of the tool receptacle.

Description

technical field [0001] The invention relates to a hand-held jigsaw with a tool housing, in which a drive motor is arranged for driving a lift drive, which is designed at least for the lift drive of a lift unit , the lifting unit is connected to a tool receiving portion constituting a vertical axis for receiving a saw blade. Background technique [0002] Such hand-held jigsaws in the form of so-called “semi-automatic” jigsaws are known from the prior art and have a tool receptacle assigned to the saw blade. The tool receptacle is designed to be pivotable about its vertical axis by means of a servomotor, wherein the servomotor is actuated, for example, using a signal from a photoelectric element that detects a premarked position on the associated workpiece. The direction of the marker line. The saw blade can thus always be oriented semi-automatically, ie autonomously, depending on the course of the marking line, so that the user can carry out the corresponding sawing easily ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D49/10B23D51/16
CPCB23D49/167
Inventor N·克洛茨U·霍夫曼
Owner ROBERT BOSCH GMBH
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