Device for producing a curved surface

Abstract

A device for producing a curved surface (2) of a work piece (1) includes a tool (3) and a tool holder for receiving the tool (3), the tool holder being drivable for rotation about a tool axis (4). At least one work piece holder accommodates a work piece (1). The work piece holder is drivable for rotation about a work piece axis (5). The tool axis (4) and the work piece axis (5) are positionable at an angle relative to one another. The tool axis (4) and the work piece axis (5) are positionable at an angle relative to one another. A work piece holder support (6) receives a plurality of work piece holders, the work piece holders being rotatably drivable relative to the work piece holder support (6). The work piece holder support (6) is rotatably drivable about a work piece holder support axis (7), so that based on superposed rotations of work piece holders and work piece holder support (6) and the rotating tool, the surface (2) of each work piece (1) is curved after end machining, depending on an inclination angle.

Claims

1. A device for producing a curved surface (2) of a work piece (1), comprising: a tool holder for receiving a tool (3), wherein the tool holder is drivable for rotation about a tool axis (4); at least one work piece holder for receiving a work piece (1), wherein the work piece holder is drivable for rotation about a work piece axis (5), wherein the tool axis (4) of the tool holder is inclined with an inclination angle relative to the work piece axis (5) of the at least one work piece holder; a work piece holder support (6) for receiving a plurality of work piece holders, wherein said work piece holders are rotatably drivable relative to the work piece holder support (6), wherein the work piece holder support (6) is rotatably drivable about a work piece holder support axis (7), so that due to superposed rotations of the work piece holders and the work piece holder support (6) and the tool during machining, a surface (2) of each work piece (1) is curved after end machining depending on the inclination angle.

2. The device according to claim 1, wherein the work piece axes (5) of the at least one work piece holder are oriented parallel to the work piece holder support axis (7) and wherein the tool axis (4) is positionable at an angle relative to the work piece holder support axis (7).

3. The device according to claim 2, wherein the tool holder is arranged radially outwardly offset relative to the work piece holder support axis (7).

4. The device according to claim 1, wherein the work piece axes (5) of the at least one work piece holder are positionable at an angle to the work piece holder support axis (7), and wherein the tool axis (4) is oriented parallel to the work piece holder support axis (7).

5. The device according to claim 4, wherein the at least one work piece holder is pivotable about an axis for inclination, wherein the axis runs tangential to an imaginary circumference, where a center point of said circumference is penetrated by the work piece holder support axis (7).

6. The device according to claim 4, wherein an outer diameter of the tool (3) is selected, such that an outer edge of the tool (3) contacts center points of the surface to be machined that are defined by the work piece axes (5).

7. The device according to claim 1, wherein the at least one work piece holder is arranged in a circulation formation in the work piece holder support (6).

8. The device according to claim 1, wherein the at least one work piece holder is drivable via a common drive.

9. The device according to claim 1, wherein the at least one work piece holder is pivotable about an axis transverse to the work piece holder support axis (7).

10. The device according to claim 1, wherein the tool (3) is a cup wheel and the at least one work piece holder is a spindle.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention as well as the technical field will be described with reference to the accompanying figures. In the figures:

(2) FIG. 1 shows a first embodiment of a finishing device for machining multiple work pieces; and

(3) FIG. 2 shows a further embodiment of a finishing device for machining multiple work pieces.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(4) FIG. 1 shows a work piece holder support 6, which is drivable by means of a drive (not shown) about a work piece holder support axis. In the work piece holder support 6, multiple work pieces 1 are rotatably mounted by means of respective work piece holders, whereby the work piece holders are drivable, respectively, rotatably about a work piece axis 5. The work piece holders can be coupled with one another, for example, by means of a belt drive. The work piece holders are pivoted with the surface 2 to be machined away from the work piece holder support axis 7 and fixed into the pivoted position.

(5) The device further includes a tool 3 formed as a cup wheel, which can be driven by means of a drive (not shown) to a rotation about the tool axis 4. The tool axis 4 is oriented parallel to the work piece holder support axis 7.

(6) Based on the relative drive of the work piece 1 to the rotating work piece holder 6, the surface 2 of the work piece 1 obtains a slightly convex curvature by machining with the rotating tool 3.

(7) If the work pieces 1 were pivoted with the surfaces 2 in the direction of the work piece holder support axis 7 and the tool 3 were to contact with its outer edge the center points of the surfaces 2 to be machined, then a slightly concave surface would be produced based on the relative rotation of the work piece 1 to the work piece holder support 6.

(8) The embodiment shown in FIG. 2 differs from the embodiment shown in FIG. 1, in that the work piece axes 5 are oriented parallel to the to the work piece holder support axis 7 and the tool axis 4 is positioned at an angle or inclined to the work piece holder support axis 7. In this regard, the inclination angle can be changed by pivoting the tool 3. The tool axis 4 intersects a work piece axis 5 of a work piece 1 at least in one respective rotational position of the work piece holder support 6.

(9) In order to produce a concave surface 2 with this embodiment, the tool 3 must be arranged, such that a radially inner or radially outer circumferential edge of the tool 3, with reference to the work piece holder support axis 6, runs through the center point of the surface 2 to be machined, whereby the tool 3 must be angled inwardly or outwardly.

(10) The features of the subject matter of this invention set forth in the above description, the patent claims, the abstract and the drawings can be used individually and in any desired combination for the realization of the invention in its various embodiments.

(11) The present invention is, of course, in no way restricted to the specific disclosure of the specification and drawings, but also encompasses any modifications within the scope of the appended claims.

REFERENCE NUMERAL LIST

(12) 1 work piece 2 surface 3 tool 4 tool axis 5 work piece axis 6 work piece holder support 7 work piece holder support axis