TOOL ATTACHMENT FOR A HAND-HELD MACHINE TOOL

• US 20140346744A1
• Filed: 08/15/2014
• Published: 11/27/2014
• Est. Priority Date: 11/15/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: HERR, Tobias, SAUR, Dietmar, WELKE, Joerg, BLUM, Jens, FISCHER, Gerald, NECKER, Andreas, TUSSING, Torsten
• Granted Patent: US 10,011,008 B2
• Time in Patent Office: Days
• US Class Current: 279/144
• CPC Class Codes: B23B 31/0261 for centering the tool
• CPC Class Codes: B23B 31/1071 Retention by balls balls acting as jaws B23B31/22
• CPC Class Codes: B23B 31/1207 moving obliquely to the axis of the chuck in a plane containing this axis
• CPC Class Codes: B23B 45/003 Attachments
• CPC Class Codes: B23Q 3/12 for securing to a spindle in general B23Q3/152 takes precedence; chucks B23B31/02
• CPC Class Codes: B25D 11/10 comprising a cam mechanism
• CPC Class Codes: B25D 11/125 with a fluid cushion between the crank drive and the striking body
• CPC Class Codes: B25D 17/00 Details of, or accessories for, portable power-driven percussive tools details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00
• CPC Class Codes: B25F 3/00 Associations of tools for different working operations with one portable power-drive means; Adapters therefor
• CPC Class Codes: Y10T 279/3406 Adapter
• CPC Class Codes: Y10T 279/3412 Drive conversion

Abstract

A tool system having a hand-held machine tool including a tool holder for receiving an insert tool; and a mounting interface configured for mounting thereon: an angle attachment that includes an angle locking section for locking on the mounting interface and an angle drive unit; and an eccentric attachment that includes an eccentric locking section for locking on the mounting interface and an eccentric drive unit.

Claims

1-21. -21. (canceled)

22. A tool system, comprising:

a hand-held machine tool including;

a tool holder for receiving an insert tool; and

a mounting interface configured for mounting thereon;

an angle attachment that includes an angle locking section for locking on the mounting interface and an angle drive unit, and

an eccentric attachment that includes an eccentric locking section for locking on the mounting interface and an eccentric drive unit.

23. The tool system as recited in claim 22, wherein the mounting interface is configured for further mounting thereon a hammer-blow attachment, wherein the hammer-blow attachment includes a hammer-blow locking section for locking on the mounting interface and a striking-mechanism drive unit.

24. The tool system as recited in claim 23, wherein the mounting interface is configured for further mounting thereon a drill-chuck attachment, wherein the drill-chuck attachment includes a drill-chuck locking section for locking on the mounting interface and a clamping-chuck unit.

25. The tool system as recited in claim 22, wherein the tool holder includes:

a receiving member for receiving the insert tool; and

a locking sleeve.

26. The tool system as recited in claim 25, wherein the insert tool has an outer multi-edge coupling and the receiving member has an inner multi-edge receiver for receiving the insert tool.

27. The tool system as recited in claim 25, wherein the tool holder has a spring element which preloads the locking sleeve in an axial direction away from the hand-held machine tool.

28. The tool system as recited in claim 27, wherein each of the angle attachment and the eccentric attachment has an actuating element configured to shift, when mounting the respective attachment on the hand-held machine tool, the locking sleeve against a spring force applied by the spring element, in a direction of the hand-held machine tool.

29. The tool system as recited in claim 27, wherein each of the angle attachment and the eccentric attachment has an actuating element configured to act upon, when mounting the respective attachment on the hand-held machine tool, the locking sleeve axially in a direction of the hand-held machine tool.

30. The tool system as recited in claim 28, wherein the actuating element is assigned to a drive shaft of each of the angle attachment and the eccentric attachment.

31. The tool system as recited in claim 30, wherein the actuating element surrounds the drive shaft at least sectionally in sleeve-shaped fashion.

32. The tool system as recited in claim 31, wherein the actuating element is sleeve-shaped and is disposed coaxially relative to the drive shaft.

33. The tool system as recited in claim 32, wherein the actuating element is coupled in rotatably fixed manner to the drive shaft.

34. The tool system as recited in claim 33, wherein the drive shaft and the actuating element are formed in one piece.

35. The tool system as recited in claim 22, wherein the tool holder includes:

a receiving member for receiving the insert tool; and

a springy retaining ring configured as a locking element for locking the insert tool to the tool holder.

36. The tool system as recited in claim 22, wherein a drive shaft of each of the angle attachment and the eccentric attachment is coupled in a rotatably fixed manner to the tool holder for rotating actuation of the respective attachment.

37. The tool system as recited in claim 22, wherein the mounting interface includes:

first securing elements for axial securing of the angle attachment and the eccentric attachment; and

second securing elements for protecting the angle attachment and the eccentric attachment against twisting on the hand-held machine tool.

38. The tool system as recited in claim 22, wherein the mounting interface has groove-like receivers having end areas that taper in a direction away from the hand-held machine tool, the groove-like receivers configured to protect the angle attachment and the eccentric attachment against twisting and to axially secure the angle attachment and the eccentric attachment on the hand-held machine tool.

39. The tool system as recited in claim 22, wherein the mounting interface includes:

holding elements in the form of bayonet projections for axially securing the angle attachment and the eccentric attachment; and

angle-adjustment components for protecting the angle attachment and the eccentric attachment against twisting on the hand-held machine tool.

40. The tool system as recited in claim 22, wherein the locking section of each of the angle attachment and the eccentric attachment has a plurality of locking elements for axially securing and for protecting the respective attachment against twisting on the hand-held machine tool.

41. The tool system as recited in claim 40, wherein the plurality of locking elements are in the form of locking spheres.

42. The tool system as recited in claim 22, wherein the locking section of each of the angle attachment and the eccentric attachment includes:

holding elements in the form of bayonet projections for axially securing the respective attachment; and

angle-adjustment serrations for protecting the respective attachment against twisting on the hand-held machine tool.