Cutting Device, Multifunction Machine Tool and Method for Producing a Cutting Device

Patent metadata

Field	Value
Publication number	US-2025065523-A1
Application number	US-202218722846-A
Country	US
Kind code	A1
Filing date	Dec 19, 2022
Priority date	Dec 30, 2021
Publication date	Feb 27, 2025
Grant date	—

Abstract

A cutting device for an oscillating multifunction machine tool includes at least one shearing unit with at least one base body, a cutting edge and a backing edge. The cutting edge and the backing edge bound a cutting opening for inserting a workpiece. The cutting device further includes a tool interface for attaching the shearing unit to a tool holder of the multifunction machine tool. The cutting edge and the backing edge are disposed rigidly relative to one another and an angular bisector of a cutting opening angle of the cutting opening is disposed in a plane perpendicular to an oscillation axis of the tool interface, at an angle between 70° and 110° to a radial axis of the tool interface, which is perpendicular to the oscillation axis and passes through an intersection point of the cutting edge and the backing edge.

First claim

1 . A cutting device for an oscillating multifunction machine tool, comprising:
at least one shearing unit comprising at least one base body, a cutting edge, and a backing edge, the cutting edge and the backing edge bounding a cutting opening configured for inserting a workpiece; and a tool interface configured to attach the shearing unit to a tool holder of the multifunction machine tool, wherein: the cutting edge and the backing edge are disposed rigidly relative to one another, and an angular bisector of a cutting opening angle of the cutting opening is disposed in a plane perpendicular to an oscillation axis of the tool interface, at an angle between 70° and 110° to a radial axis of the tool interface, the radial axis being (i) perpendicular to the oscillation axis, (ii) passing through an intersection point of the cutting edge and the backing edge, and (iii) in a plane which is perpendicular to the oscillation axis.

2 . The cutting device according to claim 1 , wherein the shearing unit comprises at least one blade, which at least forms the cutting edge and is disposed on a lateral surface of the base body, which is substantially perpendicular to the oscillation axis.

3 . The cutting device according to claim 2 , wherein:
the blade further comprises at least one further cutting edge the base body comprises at least one further backing edge, the further cutting edge and the further backing edge bound a further cutting opening, and a further angular bisector of the further cutting opening is disposed in a plane perpendicular to the oscillation axis of the tool interface at an angle between 70° and 110° to the radial axis of the tool interface.

4 . The cutting device according to claim 2 , wherein:
the shearing unit comprises at least one further blade disposed on a further lateral surface of the base body facing away from the lateral surface, and the blade and the further blade are disposed congruent to each other when viewed perpendicular to a main extension plane of the base body.

5 . The cutting device according to claim 1 , wherein the base body comprises at least one chamfered edge, which is disposed on a side of the base body facing away from the blade and runs parallel to the backing edge.

6 . The cutting device according to claim 1 , wherein the blade comprises at least one chamfered edge, which is disposed on a side of the blade facing away from the base body and runs parallel to the cutting edge.

7 . The cutting device according to claim 1 , wherein the base body comprises at least one carbide insert, which forms at least the cutting edge and/or the backing edge.

8 . The cutting device according to claim 1 , wherein the tool interface and the base body of the shearing unit are integrally connected to one another.

9 . The cutting device according to claim 1 , wherein the base body, and the blade are integrally connected to each other.

10 . A multifunction machine tool comprising:
the cutting device according to claim 1 .

11 . A method for manufacturing the cutting device according to claim 1 .

12 . The method according to claim 11 , comprising:
producing the a shearing unit of the cutting device from a blank; and shaping the shearing unit such that main extension planes of the blade and the base body of the shearing unit are disposed parallel to one another.

13 . The method according to claim 12 , further comprising:
producing the shearing unit via at least one material connection between the at least one blade and the base body of the shearing unit.

14 . The cutting device according to claim 4 , wherein the at least one further blade is identical to the blade.

15 . The cutting device according to claim 3 , wherein the base body comprises at least one chamfered edge, which is disposed on a side of the base body facing away from the blade and runs parallel to the backing edge and/or to the further backing edge.

Assignees

• Bosch Gmbh Robert

Inventors

• Fritsch Rhea
• Mueller Johannes

Classifications

• B26D2001/006

  the cutting blade having a special shape, e.g. a special outline, serrations · CPC title

• B26D1/0006

  Cutting members therefor · CPC title

• B23D35/001

  cutting members · CPC title

• B23D29/005

  for cutting sheets · CPC title

• B26D7/2614

  Means for mounting the cutting member · CPC title