IP Library Granted Patent US 10,173,339
Granted Patent B2
US 10,173,339 · App. 14/002,433 · Granted Jan 8, 2019

Machine tool separating device

Inventors: Rudolf Fuchs (Neuhausen, DE); Petr Grulich (Kirchheim unter Teck, DE); Uwe Engelfried (Ostfildern, DE)
Assignee: Robert Bosch GmbH
B27B17/02B23D57/023B27B17/025B27B33/142
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Quick Facts
Patent No.
US 10,173,339
App. No.
14/002,433
Granted
Jan 8, 2019
Kind
B2
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.

Claims (48)

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 connecting element is guided at least in part by contact with the lateral guide surface.

19. A machine tool separating device, comprising:

at least one cutting strand; and

at least one guide unit including 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,

wherein the at least one cutting strand includes at least two interconnected cutting edge carrying elements and at least one connecting element,

wherein 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,

wherein the at least one connecting element is configured integrally with at least one of the at least two interconnected cutting edge carrying elements, and

wherein one or more of (i) the at least one connecting element is configured in a bolt-shaped manner and (ii) the at least two interconnected cutting edge carrying elements are connected directly to each other.

20. The machine tool separating device as claimed in claim 19 , wherein:

the at least two interconnected cutting edge carrying elements include a first cutting edge carrying element and a second cutting edge carrying element,

the first cutting edge carrying element includes a first connecting element and a first connecting recess spaced from the first connecting element, and

the second cutting edge carrying element includes a second connecting element and a second connecting recess spaced from the second connecting element, the first connecting element engaged with the second connecting recess to interconnect the first and second cutting edge carrying elements.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 12, 2014
From: FUCHS, RUDOLF; GRULICH, PETR; ENGELFRIED, UWE
To: ROBERT BOSCH GMBH
Reel/Frame 032414/0615 →
Priority Claims (1)
DE 10 2011 005 016 · Mar 3, 2011 · national
Continuity (1)
Related Publication 20140173918A1 · Jun 26, 2014
Cited By (2)
US 12,193,684 US 12,649,255