Method for reducing vibrations, which occur during a machining process, of a machine element and/or of a workpiece

• US 8,360,697 B2
• Filed: 10/19/2006
• Issued: 01/29/2013
• Est. Priority Date: 11/28/2005
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Hamann, Jens, Wedel, Bernd, Schfers, Elmar, Trndle, Hans-Peter
• Primary Examiner(s): HOWELL, DANIEL W
• Application Number:
  US12/095,232
• Publication Number:
  US 20100247261A1
• Time in Patent Office: 2,294 Days
• Field of Search: 408/143, 408/8, 408/9, 408/5, 408/6, 408/1.R, 409131-132, 409/141, 409/186, 409/187, 409193-194, 409/231, 409/235, 188378-380, 700/175, 700/279, 701/124, 734/60, 734/62
• US Class Current: 409/131
• CPC Class Codes: B23Q 11/0035 by adding or adjusting a mass, e.g. counterweights
• CPC Class Codes: F16F 7/10 using inertia effect F16F13/108, F16F13/22, F16F15/10, F16F15/22 take precedence; stabilising vehicle bodies by means of movable masses B62D37/04; protection of buildings against vibrations or shocks by mass dampers E04H9/0215; arrangements or devices for damping mechanical oscillations of power lines H02G7/14
• CPC Class Codes: Y10T 408/03 Processes
• CPC Class Codes: Y10T 409/303752 Process
• CPC Class Codes: Y10T 409/304312 with means to dampen vibration

Abstract

The invention relates to a method of reducing vibrations, occurring during a machining operation, of a machine element (7,8) and/or of a workpiece (5) in a machine tool, production machine and/or in a machine (1) designed as a robot, wherein an additional mass (9a, 9b, 9c) is attached to the machine element (7,8) and/or to the workpiece (5) in an automated manner, wherein the mass of the additional mass (9a, 9b, 9c) is adapted to the machining operation. Furthermore, the invention relates to a machine (1) in this respect. The invention enables vibrations, occurring during a machining operation, of a machine element (7,8) of a machine (1) and/or of a workpiece (5) to be reduced.

Claims

1. A method for reducing vibrations of a workpiece during a machining process of a machine, comprising the steps of:

selecting a compensation mass having a mass suited to a machining process in dependence on a regulating parameter of the machine; and

attaching the compensation mass in an automated fashion upon the workpiece.

2. The method of claim 1, wherein the machine is a member selected from the group consisting of machine tool, production machine, and robot.

3. The method of claim 1, wherein the compensation mass is attached upon the workpiece in close proximity to the machining process.

4. The method of claim 1, wherein the compensation mass includes sub-masses attached in symmetry upon the workpiece.

5. The method of claim 1, wherein the attaching step is realized by a member selected from the group consisting of gripper, clamping device, and magnetic holder with the member being associated to the workpiece.

6. The method of claim 1, wherein the attaching step is realized by means of an automatic exchange device which permits a selection of a plurality of additional compensation masses with different masses.

7. The method of claim 6, wherein the selecting step includes the step of matching a compensation mass of increased mass as an actuating force required for the machining process increases and/or a feed of the workpiece and/or a tool increases.

8. The method of claim 1, further comprising the step of automatically interrupting the machining process in the presence of vibrations before carrying out the selecting and attaching steps, and automatically continuing the machining process after the selecting and attaching steps.

9. The method of claim 1, wherein the attaching step is implemented during the machining process.

10. The method of claim 1, wherein the selecting step includes the step of selecting the compensation mass as a function of a dominant frequency of the vibrations.

11. A machine for reducing vibrations of a workpiece during a machining process, comprising:

a compensation mass having a mass adapted to a machining process of the machine in dependence on a regulating parameter of the machine; and

an automatic exchange device to detachably secure the compensation mass in an automated fashion to the workpiece.

12. The machine of claim 11, embodied as a machine tool, production machine and/or robot.

13. The machine of claim 11, further comprising a member selected from the group consisting of gripper, clamping device, and magnetic holder, with the member being associated to the workpiece.