RU174390U1 - Device for simultaneous scanning by two laser beams - Google Patents

Device for simultaneous scanning by two laser beams Download PDF

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Publication number
RU174390U1
RU174390U1 RU2016144179U RU2016144179U RU174390U1 RU 174390 U1 RU174390 U1 RU 174390U1 RU 2016144179 U RU2016144179 U RU 2016144179U RU 2016144179 U RU2016144179 U RU 2016144179U RU 174390 U1 RU174390 U1 RU 174390U1
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RU
Russia
Prior art keywords
laser beams
scanning
device
scanning devices
characterized
Prior art date
Application number
RU2016144179U
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Russian (ru)
Inventor
Андрей Евгеньевич Орлов
Сергей Сергеевич Смоленцев
Владимир Андреевич Тимофеев
Алексей Олегович Ксенофонтов
Original Assignee
Российская Федерация в лице Министерства промышленности и торговли Российской Федерации (Минпромторг России)
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Priority to RU2016144179U priority Critical patent/RU174390U1/en
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Publication of RU174390U1 publication Critical patent/RU174390U1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08Devices involving relative movement between laser beam and workpiece
    • B23K26/082Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B26/00Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
    • G02B26/08Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating for controlling the direction of light
    • G02B26/10Scanning systems
    • G02B26/101Scanning systems with both horizontal and vertical deflecting means, e.g. raster or XY scanners

Abstract

The device for simultaneous scanning with two laser beams includes two mechanical scanning devices that are installed side by side so that the scan areas of each completely overlap the growth zone of the installation. Both scanning devices are equipped with varifocal lenses that focus laser beams on the entire plane of the growth zone. The technical result consists in expanding the technological capabilities of processing and manufacturing of parts while ensuring their high quality and accuracy of processing by ensuring complete overlap of the working area. 3 s.p. f-ly.

Description

The utility model relates to additive technologies and can be used to manufacture parts from metals and polymers by selective laser fusion and selective laser sintering. More specifically, the utility model relates to a device for simultaneous scanning with two laser beams included in a selective laser fusion or sintering apparatus.

A known installation scheme of two scanning devices side by side so that each scanning device is equipped with an F-theta lens for focusing the laser beam on the plane of the working area.

There is a known installation scheme for a series of two scanning devices, in front of which are installed collimators that provide their illumination by parallel beams, after which F-theta lenses are installed, which ensure laser beams are focused on the plane of the working area, used by SLM in the SLM 280HL installation (https: // slm- solutions.com/products/machines/slmr500hl), which is described in an article by employees of the manufacturing company SLM Solutions (http://lane-conference.org/downloads/IndustrialContributions/LANE2014_Wiesner_Mu lti-Laser_Selective_Laser.pdf). The presence of lenses in the F-theta system is confirmed by the operating instructions for the SLM 280 HL, p. 99, fig. 60 (11/29/2013).

The disadvantage of this scheme is the impossibility of providing complete overlapping by the scanning areas of the entire working area, since F-theta lenses are large and do not provide focusing when working fields necessary for complete overlapping, deviation angles. In this case, each laser beam can process only part of the working area.

A processing device is known that contains two laser heads and zoom lenses described in the publication of international application WO 2016128278 A (08/18/2016), adopted as a prototype. However, in the known device provides only partial overlap of the working area, which limits the processing capabilities of parts and does not allow to obtain parts with high precision processing.

The objective of this utility model is to develop a device that provides broad technological capabilities for the manufacture and processing of parts with high accuracy of such processing.

The technical result achieved by the implementation of the utility model is to expand the technological capabilities of processing and manufacturing of parts while ensuring their high quality and processing accuracy by ensuring complete overlap of the working area.

In particular, the use of a two-laser system that provides complete overlap of the working field allows you to:

- preheat the powder, followed by fusion with a second laser,

- remelting the part area that has not cooled down to the end,

- fuse the perimeter with a thin beam, thus ensuring accuracy and simultaneous fusion of the adjacent region of the strip of the inner region, which in turn provides greater strength to the perimeter.

- allows for double melting when the second laser melts a large area, for example, that homogenizes the material of the part.

The problem is solved in that a device for simultaneous scanning with two laser beams is proposed, comprising two laser sources and two adjacent mechanical scanning devices, each of which is equipped with a mechanized varifocal lens on the input side. The device is characterized in that the varifocal lenses are configured to focus laser beams on the entire plane of the growth zone, and the mechanical scanning devices are mounted relative to each other so that the scan areas of each of them completely overlap the growth zone.

In a preferred embodiment, the varifocal lenses are configured to automatically focus the laser beams on the entire working plane.

The device may be configured to perform parallel or sequential scanning by two mechanical scanning devices.

Not a parallel laser beam is fed to the scanning device, but focused by a varifocal lens so that the focus is located on the plane of the working area. Correction of the focal length depending on the angle of deviation is carried out by a varifocal lens under the control of a specialized software and hardware complex.

Claims (4)

1. A device for simultaneous scanning by two laser beams, containing two laser sources and two adjacent mechanical scanning devices, each of which is equipped with a mechanized varifocal lens on the input side, characterized in that the varifocal lenses are capable of focusing laser beams on the entire plane of the growth zone, and mechanical scanning devices are mounted relative to each other so that the scanning areas of each of them completely overlap tovuyu zone.
2. The device according to claim 1, characterized in that the varifocal lenses are configured to automatically focus the laser beams on the entire working plane.
3. The device according to claim 1 or 2, characterized in that it is arranged to perform parallel scanning by two mechanical scanning devices.
4. The device according to p. 1 or 2, characterized in that it is made with the possibility of sequential scanning by two mechanical scanning devices.
RU2016144179U 2016-11-10 2016-11-10 Device for simultaneous scanning by two laser beams RU174390U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2016144179U RU174390U1 (en) 2016-11-10 2016-11-10 Device for simultaneous scanning by two laser beams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2016144179U RU174390U1 (en) 2016-11-10 2016-11-10 Device for simultaneous scanning by two laser beams

Publications (1)

Publication Number Publication Date
RU174390U1 true RU174390U1 (en) 2017-10-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2016144179U RU174390U1 (en) 2016-11-10 2016-11-10 Device for simultaneous scanning by two laser beams

Country Status (1)

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RU (1) RU174390U1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001075039A (en) * 1999-09-08 2001-03-23 Ricoh Co Ltd Light source device
US20040129685A1 (en) * 2002-12-26 2004-07-08 Hitachi Via Mechanics, Ltd. Multibeam laser drilling apparatus
WO2013061587A1 (en) * 2011-10-25 2013-05-02 Minehara Eisuke Laser decontamination device
WO2016128287A1 (en) * 2015-02-13 2016-08-18 Scanlab Ag Multi-head laser system having a sensor unit with a movable optical guiding element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001075039A (en) * 1999-09-08 2001-03-23 Ricoh Co Ltd Light source device
US20040129685A1 (en) * 2002-12-26 2004-07-08 Hitachi Via Mechanics, Ltd. Multibeam laser drilling apparatus
WO2013061587A1 (en) * 2011-10-25 2013-05-02 Minehara Eisuke Laser decontamination device
WO2016128287A1 (en) * 2015-02-13 2016-08-18 Scanlab Ag Multi-head laser system having a sensor unit with a movable optical guiding element

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Legal Events

Date Code Title Description
MM9K Utility model has become invalid (non-payment of fees)

Effective date: 20181111