Saw Tool

Patent metadata

Field	Value
Publication number	US-2022274191-A1
Application number	US-202017638262-A
Country	US
Kind code	A1
Filing date	Sep 3, 2020
Priority date	Sep 4, 2019
Publication date	Sep 1, 2022
Grant date	—

Abstract

The disclosure relates to a saw tool, in particular a saw blade, for a machine tool, in particular an oscillating multifunctional machine tool, comprising at least one iron-containing support and at least one tungsten-containing hard metal strip which has a strip connection edge, wherein the at least one hard metal strip is bonded to the support at the strip connection edge via a diffusion connection which has at least one diffusion zone. The strip connection edge is designed to be at least substantially curved, in particular along a circular arc.

First claim

1 . A saw blade, for a multifunctional power tool configured to be driven in oscillation, comprising:
at least one iron-containing carrier; and at least one tungsten-containing hard metal strip that has a strip connection edge, wherein the at least one tungsten-containing hard metal strip is connected to the at least one iron-containing carrier at the strip connection edge in a materially bonded manner via a diffusion joint that has at least one diffusion zone, and the strip connection edge is at least substantially curved along a circular arc.

2 . The saw blade as claimed in claim 1 , wherein the strip connection edge extends over a segment angle of at least 15°.

3 . The saw tool as claimed in claim 1 , wherein:
the at least one diffusion zone has two end edges that are located at the end regions of the maximum extent of the strip connection edge; and the end edges are of at least substantially equal lengths.

4 . The saw tool as claimed in claim 1 , wherein the at least one tungsten-containing hard metal strip has, opposite the strip connection edge, at least one cutting edge on which cutting teeth are arranged and which extends over a circular segment having a segment angle of at least 15°.

5 . The saw tool as claimed in claim 1 , wherein the strip connection edge is at least substantially undulated.

6 . The saw tool as claimed in claim 1 , wherein:
the at least one tungsten-containing hard metal strip has at least one cutting edge opposite the strip connection edge; the at least one cutting edge and the strip connection edge are on average at least substantially parallel to each other; and the strip connection edge has a lesser maximum extent than the at least one cutting edge.

7 . The saw tool as claimed in claim 1 , wherein:
the at least one tungsten-containing hard metal strip has at least one cutting edge opposite the strip connection edge; the at least one cutting edge has a continuous, curved shape that is at least substantially parallel to the strip connection edge; and the strip connection edge and the at least one cutting edge each extend over a circular segment having a segment angle of at least 15°.

8 . The saw tool as claimed in claim 1 , wherein:
the at least one iron-containing carrier has at least one carrier connection edge by which the at least one iron-containing carrier is connected to the at least one tungsten-containing hard metal strip; and the at least one iron-containing carrier connection edge has a continuous, curved shape that extends over a circular segment having a segment angle of at least 15°.

9 . A power tool system comprising:
at least one multifunctional power tool that can be driven in oscillation; at least one saw blade as claimed in claim 1 .

10 . A method for producing a saw blade as claimed in claim 1 , comprising:
connecting the at least one tungsten-containing hard metal strip to the at least one iron-containing carrier.

11 . The method as claimed in claim 10 , further comprising:
effecting a spatially inhomogeneous depletion of alloy particles in the at least one tungsten-containing hard metal strip to achieve the diffusion joint.

Assignees

• Bosch Gmbh Robert

Inventors

• Lauber Heinrich
• Nendaz Gerald Ducrey
• Mooser Fabian
• Burgener Sebastian
• Anthamatten Martin
• Imboden Martin

Classifications

• B23D61/127

  of special material · CPC title

• B23D61/006 Primary

  Oscillating saw blades · CPC title