Raytools BM114 Series User manual

BM114 SERIES
6KW Auto-Focusing Laser Cutting Heads User Manual
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Fax: [phone]
Email: [e-mail]
Add: No.72, Lane 1500, Xinfei Road, Songjiang District, Shanghai

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Historical Version：
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V1.0
2018/03/01
Establish BM111 User Manual
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2018/03/01
Alex Li
Thank you for your choosing our product!
This manual makes a detail introduction about the use of BM114 laser cutting head, including
installation, setup, operation and service etc. Please directly contact us if you have other things to
know.
Please read these instructions carefully before use the series cutting head and relative equips.
This will help you to use it better.
Because the product keeps renewing, please note the product you receive may differ slightly
from the illustrations in this manual in some aspects. We apologize for your inconvenience here.
Version
V1.0
Date:
2018/03/01

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Index
1 Summary......................................................................................................................................4
1.1 Product Advantages................................................................................................................. 4
1.2 Structure & Function................................................................................................................ 5
2 Machinery Installation.................................................................................................................6
2.1 Hole site installation installation.............................................................................................. 6
2.2 Connection of Water Pipe and Gas Pipe.................................................................................. 6
2.2.1 Water-cooled interface..........................................................................................6
2.2.2 Assist gas interface................................................................................................ 7
2.3 Connection of Cutting Head Cable........................................................................................... 8
2.3.1 Connection of Cutting Head and Cable................................................................. 8
2.3.2 Cable Connection and Driver Connection............................................................. 8
2.4 Fiber Input Interface.................................................................................................................8
2.5 Fiber Insertion and Interface Direction Adjustment................................................................ 9
3 System Installation Commissioning...........................................................................................10
3.1 EtherCAT Installation.............................................................................................................. 10
3.1.1 Distribution..........................................................................................................10
3.1.2 Configure the Hardware...................................................................................... 10
3.1.3 eInterface Settings and Adjustments.................................................................. 11
3.1.4 Cutting Parameter Setting................................................................................... 13
3.2 BC with position mode........................................................................................................... 14
3.2.1 Distribution..........................................................................................................14
3.2.2 Software Settings.................................................................................................14
3.2.3 Interface Operation............................................................................................. 15
3.3 BC with velocity mode............................................................................................................16
3.3.1 Distribution..........................................................................................................16
3.3.2 Software settings.................................................................................................16
3.3.3 Interface Operation............................................................................................. 17
4 Beam Adjustments and Focusing.............................................................................................. 18
4.1 Beam Adjustments (QBH interface)....................................................................................... 18
4.2 The Focus Position Adjustment..............................................................................................19
5 Maintenance..............................................................................................................................19
5.1 Cleaning Lens..........................................................................................................................19
5.2 Removal and Installation of Lenses........................................................................................20
5.2.1 Removal and Installation of Collimating Protective Lenses................................ 20
5.2.2 Removal and Installation of Collimating Lenses..................................................20
5.2.3 Removal and Installation of Collimating Lenses..................................................21
5.2.4 Removal and Installation of Focus Lenses...........................................................22
5.3 Replace Nozzle Connector......................................................................................................23

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5.3.1 Replace Ceramic Body......................................................................................... 23
5.3.2 Replace Nozzle.....................................................................................................24
5.4 Troubleshooting of Driver...................................................................................................... 24
5.4.1 Fault Analysis of AheadTechs Driver....................................................................24
6 BM114 System Constitution......................................................................................................26
6.1 System Constitution (Bus)...................................................................................................... 26
6.2 System Constitution (Non-bus position loop -BC)..................................................................27
6.3 System Constitution (Non-bus position loop -BC)..................................................................28
7 Mechanical and Optical Configurations Diagram......................................................................30
7.1 Cutting Head Shape................................................................................................................30
7.1.1 Focus length.........................................................................................................32

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1 Summary
This manual covers the general description of BM114 series products, including the basic installation, factory
settings, operation, use and maintenance services and other aspects. The specific Optical mechanical
customization configurations are too much, so only the main unit parts will be introduced in this manual.
The BM114 series is an automatic focusing fiber cutting head released by Swiss RAYTOOLS AG in 2016. The
product is equipped with external servo motor and internal driver units, which can drive the focus lamp to change
position automatically in the range of about 25mm by linear mechanism. Users can continuously focus through
setting program to finish the rapid perforation of thick plates and the automatic cutting of plates of varies
thickness and material. The product can be equipped with D37 composite lens group to integrate the beam, a
variety of interface settings, so that it can be used with a variety of fiber lasers; optimized optical and
water-cooled design allows the laser head work under high power steadily for a long time.
1.1 Product Advantages
Optimized optical configuration and smooth and efficient airflow design;
Automatic focusing range + 10 ~ -15mm, adjustment accuracy 0.05mm;
Equipped with D37 composite lens, the maximum fiber input power can carry 6KW;
Maximum acceleration of focus lens driver 10m / s2, maximum speed 10m / min;
The drawer type lens holder make the replacement of protective lens more quickly and easier
The composite lenses were used for collimation and focusing to obtain the best optical quality and cutting
QBH interface
Collimating module
Base module with focusing system
Protective lens module
Cutting nozzle module
Collimating protective lens module
Fig 1 - laser head structure

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effect;
Equipped with QBH, QD and other fiber interfaces can match with various fiber lasers.
1.2 Structure & Function
As shown in Figure 1, the laser head consists of four basic units, such as collimating
module CM, focusing driving module, protective lens module and nozzle module.
Collimating module: The collimation function of the optical fiber is collimated after the
incident laser is collimated into a parallel beam and the function of tuning;
Focusing driving module: The collimated beam is focused into a concentrator beam with high power
density, and the focus position is automatically adjusted by the driving device;
Protective lens module: the protective lens protects the focusing lens from damage by returning the slag
and prolongs the service life of the focusing lens;
Nozzle module: Guide the focus beam to the work piece and produce high velocity jet cutting to achieve
high quality cutting

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2 Machinery Installation
2.1 Hole site installation installation
BM114 laser machining head and the fixed mounting hole size and position of the machine tool are shown in
Figure 3.1. Customers are advised to Install the laser head perpendicular to the machined surface as requested
and make sure the laser head is locked, which is one of the premises to ensure the follow up sable cutting effect.
CAUTION: the Z-axis sliding base for fixing laser processing head should be connected with machine tools
and keep a good grounded.
2.2 Connection of Water Pipe and Gas Pipe
2.2.1 Water-cooled interface
BM114 laser processing head has 3 sets of water-cooled channels which direction of water entry and exit can
be arranged arbitrarily. It is important to note that when the laser power is greater than 500 watt hours, it is
recommended to use water-cooled.as you can see from Figure 3.2, the position and amount of the water
interface, and the right table details the recommended flow velocity.
The design of this water-cooled interface is closed loop water-cooled system, and it also can be used
equipped with external water supplied but subjected to the requirements of the list.
Outer diameter of water pipe
caliber
6mm
Minimum flow speed
1.8 l/min(0.48gpm)
Entry pressure
170-520kPa(30-60 psi)
Entry temperature
≥room tempreture /＞dew point
Hardness (relative to CaCO3)
＜250mg/liter
PH range
6 to 8
Particles size available
Diameter less than 200 microns
Figure 3.1 — Hole site installation

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2.2.2 Assist gas interface
The impurity in auxiliary gas such as hydrocarbon and steam will damage the lens and cause cutting power
fluctuation as well as inconsistencies between the sections of the work piece. The firm below is the recommended
auxiliary gas specification. The higher the purity of the gas, the better the quality of the cutting section.
Impurity can be filtered out in gas supply tube, but Oxygen and water vapor can permeate light path through
nonmetal materials, which is the source of the appearance of dust and hydrocarbon. Stainless steel fittings are
recommended, at the same time must use filters which can remove a minimum of 0.01 micron particle to purify.
A pressure gauge with a stainless steel diaphragm is recommended. Industrial pressure gauges suck in air.
Rubber diaphragm produce hydrocarbon by aging or other factors.
CAUTION: Gas interface can not be replaced arbitrarily, especially do not use PTFE TAPE, Otherwise,
the gas path will be blocked, the normal cutting will not be possible and the laser head parts will be
damaged at the same time.
Gas
Purity
Maximum content
of water vapor
Maximum content of
hydrocarbon
oxygen
99.95%
<5 ppm
<1 ppm
nitrogen
99.99%
<5 ppm
<1 ppm
argon
99.998%
<5 ppm
<1 ppm
helium
99.998%
<5 ppm
<1 ppm
Diameter of auxiliary gas
pipe (Outer diameter)
10mm
Diameter of cooled gas
pipe (Outer diameter)
8mm

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2.3 Connection of Cutting Head Cable
This paper mainly introduces the connection between the cable and the cutting head. The control section of
the driver and the connection refer to the wiring diagram of each series of system.
2.3.1 Connection of Cutting Head and Cable
Connect the corresponding connector of cutting head with motor power cable, encoder cable, sensor cable
respectively (as shown in figure 3.3). After the proper length is reserved, the cable is inserted into the track groove
of the machine tool and fixed.
2.3.2 Cable Connection and Driver Connection
Connect motor power wire and encoder wire with the corresponding interface of driver according to the
definition in cable sleeve. The wiring of the drive and limit sensor cables is shown in the wiring diagram of the
various wiring systems attached. Caution: The limiting sensor is divided into high level output and low level
output, and the two are normally closed output mode(high level and low level signal are output by the sensor
when not triggered); electric relay should be self installed when necessary to carry on the high-low level or the
normally open and normally closed conversion.
CAUTION: All wiring is in the state of power failure, and the power can be debugged after inspection.
2.4 Fiber Input Interface
BM114 is suitable for most industrial laser generators. It is equipped with collimating mirror assembly
The connection between the end of the fiber and the cutting head is called fiber interface. Commonly used
fiber connectors include QBH, QD, etc, and every fiber interface has its unique fixation method. Please refer to
corresponding instruction of fiber interface. Figure 5 shows the installation interface of QBH connector.
WARNING: The optical devices must be kept clean and all dust must be removed before use. If the laser
head is vertically inserted in the optical fiber, the laser head must be rotated 90 degrees to the
horizontal level and then inserted into the optical fiber to prevent dust from entering the interface and
falling on the surface of the lens. Upper limitng in the fiber before fixing the laser head.

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2.5 Fiber Insertion and Interface Direction Adjustment
In this paper, an optical fiber insertion method is described in conjunction with a QBH joint.
First, align the red point at the end of the QBH interface with the red point of the handwheel; then remove
QBH dust proof cover and the red mark of fiber output end is aligned QBH red mark and insert straight to
bottom; Then turn the QBH handwheel clockwise. It is in place when you hear the "Da" sound,then pull the
handwheel up and turn clockwise again. (see Figure 3.4)
If when the fiber connector insert into the interface, the red dot on fiber is too far away from the red dot on
laser head interface, causing an out of alignment insertion, when can refer to steps below to adjust the position of
fiber interface on laser head for solving the problem. As shown in Fig. 3.4, unscrew the 4 locking screws of the
position of the part icon with a wrench, rotate the QBH interface and screw the locking screws after the red mark
is in place.