Method for checking the driftability of metallic tubes
AssigneeV & M Deutschland GmbH
InventorsAndreas Groos, Stefan Nitsche
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for testing the driftability of metal tubes, wherein a cylindrical drift body having a defined diameter and a defined length is guided through the tube with defined force for ensuring a predetermined internal diameter and a minimum straightness. Virtual drifting is hereby performed instead of the physical drift operation.
Claims3
-2. (canceled)
A method for testing the driftability of metallic tubes, wherein in a physical drift operation a cylindrical drift body with a defined diameter, a defined length is moved with a defined force through a tube for ensuring a predetermined inside diameter and a minimum straightness, comprising the steps of:
- completely describing a geometry of the tube in form of a three-dimensional image by using previously determined measurement data for an outside diameter and a wall thickness along a circumference and along an entire length of the tube as well as measurement data or assumed values for a straightness at precise locations of the tube,
- performing a virtual drift operation based on the three-dimensional image,
- virtually pushing in a simulated movement a virtual drift body having a predetermined length and a predetermined diameter through the tube, and
- determining the driftability of the tube by comparing geometric values of the tube and the drift body at identical locations of the tube.
Dependencies are inferred from the claim text.