Laser cutting equipment (6)

(4) Integrated cutting equipment

In the integrated cutting device, the laser is mounted on the frame and moved longitudinally in the frame, and the torch is integrated with the driving mechanism to move laterally on the frame beam, and the various molding parts can be cut by the numerical control method. In order to compensate for the lateral movement of the torch to change the length of the optical path, it is usually provided with an adjustment of the optical path length, which can obtain a homogeneous beam within the cutting area and maintain the homogeneity of the quality of the cutting surface.

The integrated cutting device generally uses a high-power laser, which is suitable for the cutting process of large-size steel structural parts of medium and heavy plates (8-35mm). Table 5 lists the processing capabilities of the integrated laser cutting equipment. The main technical parameters of LMX integrated laser cutting equipment are shown in Table 6.

Table 5 Processing capacity of integrated laser cutting equipment

Laser power / kW

1.4

2

3

6

Effective cutting range / mm

1830×7000

2440×36000

4200~36000

2600~36000

Cutting carbon steel maximum thickness / mm

9

16

19

40

Table 6 Main technical parameters of LMX integrated laser cutting equipment

model

LMX25

LMX30

LMX35

LMX40

Effective cutting width / mm

2600

3100

3600

4100

Effective cutting length / mm

According to user requirements (standard 6m)

Gauge / mm

Effective cutting width +1700

Total track length / mm

Effective cutting width +4800

Cutting machine height / mm

2200

Torch height floating stroke / mm

200

Drive mode

Rack and pinion driven on both sides

Cutting feed rate / mm · min -1

6 to 5000

Rapid feed rate / mm·min -1

24000

Cutting torch up and down movement speed / mm · min -1

1200

Origin return accuracy / mm

±0.1

Positioning accuracy / mm

±0.0001

Laser (CO2 gas laser)

TF3500 (rated power 3kW) or TF2500 (rated power 2kW)

(5) Laser cutting robot

The laser cutting robot has a CO 2 gas laser and a YAG solid laser cutting robot. Laser cutting robots are usually used for both cutting and welding.

1) CO 2 laser cutting robot

A schematic diagram of the structure of the L-1000 CO 2 laser cutting robot is shown in Figure 11.

The L-1000 CO 2 laser cutting robot is a polar coordinate 5-axis control robot equipped with a C1000 to C3000 laser. The light beam is transmitted through four mirrors disposed in the robot arm, and is focused and then ejected from the nozzle. The mirror is made of copper, and the surface is subjected to reflection treatment so that the beam transmission loss does not exceed 0.8%, and the positional accuracy of the focus is quite good. In order to prevent the mirror from being stained, the optical path is completely out of contact with the outside, and the cleaned air filtered by the filter is also filled in the optical path and has a certain pressure to prevent the surrounding dust from entering.

The main technical parameters of the L-1000 CO 2 laser cutting robot are shown in Table 7.

Table 7 Main technical parameters of L-1000 CO 2 laser cutting robot

project

Technical Parameters

Action form

Polar coordinate

Control axis number

5 axes (θ, w, R, γ, β)

Setting status

Fixed to the ground or suspended on the gantry

The scope of work

θ axis / (°)

200

w axis / (°)

60

R axis / mm

1200

γ axis / (°)

360

轴 axis / (°)

280

Maximum speed

θ axis / (°) · s -1

90

w axis / (°) · s -1

70

R axis / mm · s -1

90

γ axis / (°) · s -

360

轴 axis / (°) · s -

360

The front part of the arm can carry the mass / kg

5

Drive mode

AC servo motor servo drive

control method

Digital servo control

Position repeatability / mm

±0.5

Number of laser mirrors

4

Laser inlet diameter / mm

62

Auxiliary gas piping system

2 sets

Optical path cleaning air piping system

1 set

Laser mirror cooling water system

1 set of inlet and outlet

Mass of mechanical structure part / kg

580

2) YAG solid laser cutting robot

The structure of the multi-joint YAG laser cutting robot developed in Japan is shown in Fig. 12.

The multi-joint YAG laser cutting robot uses optical fibers to directly transmit the beam from the laser to the torch mounted on the robot arm, so it is more flexible than the CO2 gas laser cutting robot. This kind of robot is made up of the original welding robot. It adopts the teaching method and is suitable for the trimming, punching and cutting of three-dimensional metal parts such as car body moldings.

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