Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device for optically determining a distance

An equipment and optical technology, applied in laser welding equipment, optical devices, welding equipment, etc., can solve problems such as affecting measurement results

Active Publication Date: 2016-10-12
TRUMPF WERKZEUGMASCHINEN GMBH & CO KG
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, calibration of the distance sensor system is necessary and the area considered in the capacitance measurement on the workpiece surface is relatively large, so that interference contours that may exist there can influence the measurement results

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for optically determining a distance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] figure 1 An exemplary structure of a device in the form of a laser processing machine 1 is shown, which comprises a processing head 3 for focusing a laser beam 2 onto a workpiece 4 spaced apart from the processing head 3 . The laser beam 2 is in the example shown by CO 2 Lasers are generated. Alternatively, the laser beam 2 can be generated, for example, by a solid-state laser. The laser beam 2 is focused on the workpiece 4 by means of a focusing device in the form of a focusing lens 5 in order to carry out workpiece processing on the workpiece 4 , for example in the form of a laser welding process or a laser cutting process.

[0036] Furthermore, the processing head 3 comprises a processing nozzle 6 , wherein in the example shown a focusing lens 5 focuses the laser beam 2 onto the workpiece 4 through the processing nozzle 6 , more precisely through the opening 7 on the inside of the processing nozzle 6 On, more precisely, focused on the workpiece surface 8 formed on...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for optically determining the distance (A) between an opening (7) formed on a device (1) and a reference surface (8), said method comprising the steps of: beams (17a, 17b) irradiating the reference surface (8) through the opening (7), the illuminating beam passing through the opening (7) at an angle (α, -α'); passing through the At least one image (24) of the reference surface (8) is taken with the opening (7); and in the at least one taken image (24) according to the radiation beam ( The offset (V) between the illuminated area (22) of 17a, 17b) and the edge contour (9) of the opening (7) determines the distance (A). The invention also relates to a device (1) for optically determining a distance (A) between an opening (7) formed on the device (1) and a reference surface (8). In particular, the opening ( 7 ) can be formed on the processing nozzle ( 6 ). The reference surface (8) may be a workpiece surface.

Description

technical field [0001] The invention relates to a method for optically determining the distance between an opening and a reference surface. The invention also relates to an associated device for determining the distance between an opening formed in the device and a reference surface. The device can be, for example, a processing head, in particular a laser processing head, or a processing machine, for example a laser processing machine. Background technique [0002] Capacitive distance measurement methods are known for determining the distance between the machining head and the workpiece surface, wherein the distance between the machining head or a component rigidly connected to the machining head, for example a machining nozzle, and the workpiece is determined in order to determine the distance of capacitance. In such capacitive distance measurement methods, electronics are typically arranged in the vicinity of the process nozzle. Typically, a calibration of the distance ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/02B23K26/03G01B11/06
CPCG01B11/026B23K26/032G01B11/028G01B11/0608
Inventor A·米利希B·雷加阿尔德
Owner TRUMPF WERKZEUGMASCHINEN GMBH & CO KG