This Motion Control enables laser machining of unlimited sized work pieces with highest accuracy and throughput. Synchronized motion control of the scan head, stage and laser is jointly developed by experts for galvanometer scanners and stage motion control.

XL SCAN is an advanced scanning solution designed for largefield applications with demanding requirements. The user gainsflexibility through the choice of options between multiplesyncAXIS control instances, positioning stages or scan heads.

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Key Features

• Large-field scanning solution

• Unlimited job duration

• Increased throughput

• High accuracy

• No stitching errors

• Highly dynamic process without stage vibrations

• Automatic laser control, e.g. Spot Distance Control (SDC)

• Multiple scan heads, positioning stages and instances

Typical Applications

• Large-field marking, cutting and engraving

• Glass and foil processing

• Micromachining

• Drilling of large-area PCBs

Principle of Operation

The motion path of the laser spot, relative to the work piece, is automatically split between scan head and XY stage. Intrinsic motion splitting enables optimal usage of scan head´s and stage´s dynamic capabilities. The scan head is responsible for short distance, high speed movements; the stage extends the working area.

Additional Options• Multiple positioning stages• Multiple syncAXIS control instances• Multiple scan heads

Unlimited Process Area

Until now, laser processing possibilities wereoften limited by the scan head´s imagefield. In large working fields conventionalproduction methods are slow because theyrely on picewise processing of the patternto be manufatured. Additionally, stitchingerrors (marking displacements at image fieldboundaries) are generated.XLSCAN, the latest scanning solution developed by SCANLAB and ACS Motion Controlallows for a quasi-unlimited working area.

High Accuracy

excelliSCAN exhibits zero tracking error.Combined with XL SCAN´s trajectory planning and jerk-limited motion control ofboth XY stage and scan head, the absenceof tracking error allows the user to obtainan overall accuracy only limited by the sumof static positioning errors of the XY stageand scan head without any additional errorcontribution.An advanced control algorithm preventsvibrations of the whole system. The scanhead with its high dynamics enables highspeeds even on complex paths with simultaneous smooth movement of the XY stage.

Increased Throughput

Combined sequencing of scan head andXY stage motion allows for significantreduction of process time in numerousapplications. For example, throughput forsmall circular markings was increased by41% (see figure 1).

Simultaneous movement enables 41% higher throughput(the number of additionally marked circles is indicated by thered marking)

No Stitching Errors

XLSCAN eliminates the need for dividing the process area into individual tilescovered by the scan head´s field of viewand enables all-in-one processing of thewhole area. Consequently, stitching errorsare completely absent.

Fast Circular Marking

Large patterns with detailed markings areproduced with highest efficiency and accuracy. For example, using XL SCAN to markcircular paths with tiny details is simple andstraightforward (see figure 3).

Large circle with detailed marking

Spot Distance Control (SDC)

The spot distance control is SCANLAB´s latest innovation and a feature of the RTC6board, which is included in the XL SCANpackage. SDC sends a signal to the lasercontroller to trigger a single laser pulse orpulse train. In each clock cycle, SDC verifies whether a laser pulse is required toproduce desired spot distance with a resolution of 64 MHz. For lasers with frequencies between 200 - 800 kHz, a maximumspot distance deviation of ± 2.5 % can bereached under optimal system conditions.

Two laser parameters can be controlled at the same time, e.g. pulse energy and spot distance. Characteristic curves for each control parameter (non linearity compensation) are defined in the configuration file.

Fast Processing and Highest Precision with Trajectory Plannings 

yncAXIS control´s behaviour is highlyconfigurable, e.g. users can adjust tolerable rounding. The movements are planedexactly according to the user‘s requirements by intelligent algorithms.syncAXIS control provides highest accuracywith exact precalculation of each trajectory.With look-ahead trajectory planning, thepattern to be scanned is reflected in detail.Individual paths for the scan head andstage are planned based on the system`sdynamic capabilities and user-definedtrajectory parameters. Conventional scansystems without trajectory planning sufferfrom having a tracking error, which leadsto unwanted corner rounding and curvedistortion.The intelligent algorithms of trajectoryplanning use the maximum dynamics ofthe system within the tolerance limitsspecified by the user. A shortening of theprocess time results from time-optimizedjumps between the marking vectors andthe intelligent use of „Sky-Writing“.

Example of time saving with zig zag line

This example shows the combined stage`s and scan head`s motion path for marking a zig zag line. Onthe left side, constant energy deposition is achieved via using sky writing. On the right side, trajectoryplanning is used for constant energy deposition, even in acceleration and deceleration phases. Production time is reduced by 38% with trajectory planning.

Contour-Dependent Laser Control

With SDC, laser pulse distances can bekept constant along the path, independently of the pattern to be scanned.Constant distance can be defined eitherfor the spot´s center or for the spot´s edgethat actually meets the workpiece for evenmore constant energy deposition on theworkpiece side (see figure 1 and figure 2)or even on the waste side. This setting isapplied to all signals that use velocity dependent laser control.

Ramping of Laser Control Signals

The laser control signals can be rampedaccording to user requirements. This canbe realized along straight or curved laserpaths as well as for jumps. Even multipleramps and jumps are possible in single vectors. Ramps can be defined for both lasercontrol signals individually. Figure 3 showsan example of laser power ramping.

Deflection-Angle-Dependent 

Control of the Laser Signal Laser spot size in the working area depends on the deflection angle from the scan head. With syncAXIS control, the user can define a deflection-angle-dependent laser control to keep the energy density constant, although spot size varies minimally along the laser path (see figure 4).This can be applied to each laser control signal.

激光加工服务-首选-福唐激光-一站式服务平台，省钱，省心：

品类全、精度高、质量好、价格优惠、交期及时！

新用户首次体验享500元优惠！

http://www.laserplatform.com/

laser@ftiworks.com

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