Machine tool separating device

Patent metadata

Field	Value
Publication number	US-10173339-B2
Application number	US-201214002433-A
Country	US
Kind code	B2
Filing date	Mar 2, 2012
Priority date	Mar 3, 2011
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A machine tool separating device, in particular on a handheld machine tool separating device, includes at least one cutting strand and at least one guide unit, which form a self-contained system. The guide unit comprises at least one main guide unit element and/or at least one cutting strand holding unit, wherein at least the main guide unit element and/or the cutting strand holding unit has at least two guide surfaces, which have different alignments in relation to one another and which, when mounted, are provided to guide the cutting strand.

First claim

The invention claimed is:

1. A machine tool separating device, comprising:
at least one cutting strand; and
at least one guide unit including (i) at least one of at least one guide unit main element and at least one cutting strand holding unit and (ii) at least one further guide unit main element releasably connected to the at least one of at least one guide unit main element and at least one cutting strand holding unit,
wherein the at least one cutting strand and the at least one guide unit define a closed system,
wherein the at least one of the at least one guide unit main element and the at least one cutting strand holding unit includes at least two guide surfaces having different alignments with respect to one another and which, in a mounted state, are configured to guide the at least one cutting strand, and
wherein the at least one further guide unit main element includes at least two further guide surfaces having different alignments with respect to one another and which, in a mounted state, are configured to guide the at least one cutting strand.

2. The machine tool separating device as claimed in claim 1 , wherein the at least one guide unit main element and the at least one further guide unit main element, in a mounted state, are connected together by at least one of a positive-locking connection and a friction-locking connection.

3. The machine tool separating device as claimed in claim 1 , wherein the at least one guide unit, when viewed in a cutting plane of the at least one cutting strand, has at least two convex ends.

4. The machine tool separating device as claimed in claim 1 , wherein the at least one cutting strand holding unit is arranged at least in part on the at least one guide unit main element.

5. The machine tool separating device as claimed in claim 1 , wherein the at least one cutting strand holding unit includes at least one disc-shaped cutting strand holding element configured to hold the at least one cutting strand in at least one mounting position.

6. The machine tool separating device as claimed in claim 5 , wherein the at least one cutting strand holding element includes at least one drive element coupling recess.

7. The machine tool separating device as claimed in claim 1 , wherein the at least one cutting strand holding unit includes at least one cutting strand holding element and at least one machine tool coupling element integrally formed with the at least one cutting strand holding element.

8. The machine tool separating device as claimed in claim 1 , wherein:
the at least one cutting strand holding unit includes at least one cutting strand holding element and two machine tool coupling elements, and
the at least one cutting strand holding element, when viewed along a direction which extends at least substantially at right angles to a cutting plane of the at least one cutting strand, is arranged between the two machine tool coupling elements.

9. The machine tool separating device as claimed in claim 1 , wherein:
the at least one cutting strand includes at least two interconnected cutting edge carrying elements and at least one connecting element, and
the at least two interconnected cutting edge carrying elements are connected together by the at least one connecting element, which closes off in an at least substantially flush manner with at least one outside surface of one of the at least two cutting edge carrying elements.

10. The machine tool separating device as claimed in claim 9 , wherein:
the at least one guide unit includes a guide element, and
the at least one connecting element is guided at least in part by the guide element.

11. The machine tool separating device as claimed in claim 1 , further comprising a torque transmitting element mounted at least in part in the at least one guide unit.

12. The machine tool separating device as claimed in claim 1 , wherein the at least one guide unit, when viewed along a cutting direction of the at least one cutting strand, has a cross section which changes at least in a part region of the at least one guide unit in a direction at least substantially at right angles to a cutting plane of the at least one cutting strand.

13. A portable machine tool, comprising:
a coupling device; and
wherein the coupling device is configured to couple in at least one of a positive-locking coupling and a friction-locking coupling with a machine tool separating device having at least one cutting strand and at least one guide unit, the at least one guide unit including (i) at least one of at least one guide unit main element and at least one cutting strand holding unit and (ii) at least one further guide unit main element releasably connected to the at least one of at least one guide unit main element and at least one cutting strand holding unit, the at least one of the at least one guide unit main element and the at least one cutting strand holding unit including at least two guide surfaces having different alignments with respect to one another and which, in a mounted state, are configured to guide the at least one cutting strand, and the at least one cutting strand and the at least one guide unit defining a closed system, the at least one further guide unit main element including at least two further guide surfaces having different alignments with respect to one another and which, in a mounted state, are configured to guide the at least one cutting strand.

14. A machine tool system, comprising:
at least one machine tool separating device having at least one cutting strand with at least one guide unit including (i) at least one of at least one guide unit main element and at least one cutting strand holding unit and (ii) at least one further guide unit main element releasably connected to the at least one of at least one guide unit main element and at least one cutting strand holding unit, the at least one of the at least one guide unit main element and the at least one cutting strand holding unit including at least two guide surfaces having different alignments with respect to one another and which, in a mounted state, are configured to guide the at least one cutting strand, the at least one further guide unit main element including at least two further guide surfaces having different alignments with respect to one another and which, in a mounted state, are configured to guide the at least one cutting strand, and the at least one cutting strand and the at least one guide unit defining a closed system; and
a portable machine tool having a coupling device configured to couple in at least one of a positive-locking coupling and a friction-locking coupling with the at least one machine tool separating device.

15. The machine tool separating device as claimed in claim 1 , wherein the machine tool separating device is configured for use with a hand-held machine tool.

16. The machine tool separating device as claimed in claim 1 , wherein the at least one guide unit includes the guide unit main element and the further guide unit main element, the further guide unit element releasably connected to the guide unit main element.

17. The machine tool separating device as claimed in claim 9 , wherein the at least one connecting element closes off in a flush manner with the outside surface of the one cutting edge carrying element.

18. The machine tool separating device as claimed in claim 9 , wherein:
at least one of the two guide surfaces of the at least one guide unit main element is a lateral guide surface oriented parallel to a cutting plane of the at least one cutting strand, and
the at least one

Assignees

• Fuchs Rudolf
• Grulich Petr
• Engelfried Uwe
• Bosch Gmbh Robert

Inventors

• Fuchs Rudolf
• Grulich Petr
• Engelfried Uwe

Classifications

• B27B17/025

  Composite guide bars, e.g. laminated, multisectioned; Guide bars of diverse material · CPC title

• B27B33/142

  Cutter elements · CPC title

• B27B17/02 Primary

  Chain saws equipped with guide bar (B27B17/06 takes precedence) · CPC title

• B23D57/023 Primary

  hand-held or hand-operated · CPC title