US 8,790,157 B2 · Method and device for machining workpieces

Abstract

A method for grinding the surface of non-round workpieces. The method includes the steps of clamping a workpiece within a machining unit; machining the workpiece; without unclamping the workpiece, contactlessly measuring the workpiece using an optical measuring device having a conoscopic holography sensor with a characteristic measuring range; and machining and measuring the workpiece in an alternating manner to iteratively approach the desired measurements of a specified form by adjusting the distance between the optical measuring device and the surface of the workpiece depending on there being a deviation of the surface from the specified form so that a respectively measured area of the surface of the workpiece remains within the measuring range of the optical sensor.

Claims20

Dependent claims

A method for machining workpieces, in particular for grinding the surface of non-round workpieces, the method including the steps of:

a. clamping a workpiece within a machining unit;
b. machining the workpiece;
c. without unclamping the workpiece, contactlessly measuring the workpiece using an optical measuring device having a conoscopic holography sensor with a characteristic measuring range;
and
d. machining and measuring the workpiece in an alternating manner to iteratively approach the desired measurements of a specified form by adjusting the distance between the optical measuring device and the surface of the workpiece depending on there being a deviation of the surface from the specified form so that a respectively measured area of the surface of the workpiece remains within the measuring range of the optical sensor.

2 more elements

A method for machining workpieces, the method having the following steps:

clamping a workpiece within a machining unit;
contactlessly measuring the surface of this workpiece by means of a measuring device including a conoscopic holography sensor with a characteristic measuring range, the measuring taking place while the workpiece is clamped within the machine;
carrying out machining operations alternating with the measuring operations and in such a manner that the desired dimensions of the product are approached iteratively;
and
changing the distance between the optical scanner and the surface of the workpiece so long as there is a deviation of the surface from the specified form so that the respectively measured area of the surface of the workpiece remains within the measuring range of the scanner.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/769,431Filed 18 Feb 2013 · continuation

Priority

CH 1298/0717 Aug 2007

Published

US 2013/0260644 A13 Oct 2013

Granted

29 Jul 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

B24B 49/12
Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring…
B23Q 17/2419
For indicating desired positions guiding the positioning of tools or workpieces: by projecting a single light beam
B24B 5/02
Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories…:…
B24B 19/08
Single-purpose machines or devices for particular grinding operations not covered by any other main group: for grinding non-circular…

Family

PCT/CH2008/000351Parent of this continuation · filed 18 Aug 2008

US 2013/0260644 A1Pre-grant publication · published 3 Oct 2013

Application12/673,591Parent of this continuation

US 8,403,725 B2Parent of this continuation

US 2011/0009031 A1Published application

US 8,790,157 B2This patent

From the US filing history. Foreign family members aren’t listed.

Method and device for machining workpieces

Life of this patent

Method and device for machining workpieces

Life of this patent

Abstract

Claims20