Tool assembly for a rotating device

Abstract

Tool assembly for a rotating device having a drive, a control and a supporting arrangement for at least one tool insert. In order to provide a device for off-round turning which can be constructed with little technical and mechanical effort and nonetheless be used at almost any axial position of a workpiece, the application proposes a tool assembly of the type mentioned above. The tool assembly is designed as a crank drive assembly, wherein the supporting arrangement has a swinging piston unit and the crank drive assembly has a crank unit, and the swinging piston unit and the crank unit are connected to one another by a thrust rod unit.

Claims

1. A tool assembly for a rotating device having a drive, a control and a supporting arrangement for at least one tool insert, the tool assembly comprising a crank drive assembly, wherein the supporting arrangement comprises a swinging piston unit and the crank drive assembly comprises a crank unit, and the swinging piston unit and the crank unit are connected by a thrust rod unit wherein the crank unit includes a gear unit by means of which an input force rotating about an axis can be converted into an output force rotating eccentrically about the axis, wherein the crank unit includes an imbalance compensation unit.

2. The tool assembly from claim 1, wherein the swinging piston unit has a swinging piston carried pivotally about another axis.

3. The tool assembly from claim 2, wherein the swinging piston is configured as a segment of a disc.

4. The tool assembly from claim 2, wherein the swinging piston is configured as a mass carrier.

5. The tool assembly from claim 1, wherein the eccentricity of the crank unit can be adjusted.

6. The tool assembly from claim 1, wherein the drive comprises an electric motor.

7. The tool assembly from claim 6, wherein a speed of the electric motor can be controlled.

8. The tool assembly from claim 1, wherein a path of motion of a cutting tool located on the swinging piston is curvilinear.

9. The tool assembly from claim 1, wherein the thrust rod unit is adjustable in length.

10. The tool assembly from claim 1, wherein the tool assembly is located on a radially and/or longitudinally adjustable slide.

11. The tool assembly from claim 1, wherein a pivot point between thrust rod unit and swinging piston is variable.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) Additional advantages and features of the invention emerge from the following description, with reference to the FIGURE.

(2) The drawing described herein is for illustrative purposes only of selected embodiments and not all possible implementations, and is not intended to limit the scope of the present disclosure.

(3) FIG. 1 shows a schematic representation of an embodiment of a tool assembly in accordance with the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(4) Example embodiments will now be described more fully with reference to the accompanying drawing.

(5) The tool assembly 1, shown purely schematically, comprises a crank unit 2, a swinging piston unit 3 and a thrust rod unit 4. The swinging piston unit 3 comprises a disc-shaped swinging piston that pivots about an axis 5. A cutting tool 6 is shown schematically at the open end. In the embodiment shown the piston 3 is shown designed as a disc segment. On the outer edge, for example, it has a rail-like extension. Above this, it can be guided in a housing, as indicated by line 8 by meshing with a correspondingly precise guide.

(6) The crank unit 2 has an eccentric 9, the eccentricity of which can preferably be adjusted. The thrust rod unit 4 is used as a connection, comprising a thrust rod 10 that is preferably designed to be adjustable in length. The pivot point 11 at the swinging piston 3 is preferably also variable. Crank unit 2 incorporates a gear unit 13 that transmits a centrally introduced driving force of an electric motor 14 into eccentric 9.

(7) The embodiment described is solely for explanation and is not restrictive.

(8) The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.