Automatic focusing three-dimensional five-axis laser cutting head

Abstract

The utility model relates to an automatic focusing three-dimensional five-axis laser cutting head which comprises an optical fiber QBH automatic collimation assembly, a C-axis rotating assembly, an A-axis rotating assembly, a light path reflection assembly and a cutting assembly, and has the advantages that the structure is compact, focusing is accurate, the optical fiber QBH automatic collimation assembly and an automatic focusing lens assembly are adopted, the center position and the focal length of a light beam can be accurately adjusted, and the cutting efficiency is improved. Stable and consistent cutting quality is guaranteed, and cutting precision is improved. The protection assembly is internally provided with pressurized gas to prevent dust pollution, and the service life of the optical element is prolonged; the anti-collision assembly is in magnetic attraction connection with an annular magnet through a contact type sensor, the cutting head is effectively protected against collision damage, the equipment reliability is improved, and the service life is prolonged. The laser machining device is high in adaptability, can adapt to various types of lasers, meets different machining requirements, has good universality and flexibility, and expands the application range. The automatic focusing function reduces manual intervention, accelerates the cutting speed, improves the production efficiency and reduces the production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a laser cutting head, concretely relates to an automatic focusing three-dimensional five -axis laser cutting head belongs to laser cutting equipment field. BACKGROUND

[0002] In the modern industrial processing field, the application of laser cutting technology is extremely wide, especially for the processing of three-dimensional workpieces, three-dimensional five-axis laser cutting system plays a vital role, is widely used in three-dimensional cutting processing of metal and nonmetal materials, it usually involves three linear axes (X, Y, Z) and two rotating axes (usually A and C), through the independent control and coordinated movement of the five axes, the cutting head can change position and angle flexibly in three-dimensional space, realize accurate cutting of complex curved surface and solid structure.

[0003] At present, the three-dimensional five-axis laser cutting head on the market mainly adopts two driving modes: one is DD motor driving, its structure is relatively complex, resulting in that the upper limit of the acceleration of the cutting head is limited, and it is extremely inconvenient to maintain, once a fault occurs, the maintenance cost is high, the maintenance period is long, and the production efficiency is seriously affected; the other is ordinary servo motor plus planetary reducer driving, this mode has a significant problem, that is, there is no light hole, so that the infinite rotation function of the cutting head cannot be realized, which limits its application range in complex three-dimensional workpiece processing.

[0004] In addition, most of the three-dimensional five-axis laser cutting heads are only suitable for fiber lasers, and products for CO2 hard light paths are rare, which greatly limits the application of different laser types and cannot meet the diversified processing needs. More importantly, the existing cutting heads have obvious deficiencies in focusing, protection and anti-collision and other key performances. In terms of focusing, the existing cutting heads either have no automatic focusing function or have low focusing precision, which cannot meet the requirements of high-precision processing, resulting in unstable cutting quality. In terms of protection, the cutting head lacks effective protection measures inside, is easily affected by dust and other pollutants, shortens the service life of optical elements, and increases maintenance cost. In terms of anti-collision, the existing anti-collision mechanism responds slowly and cannot timely and effectively protect the cutting head, and once collision occurs, the cutting head is easily damaged, affecting production efficiency and equipment reliability. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides an automatic focusing three-dimensional five-axis laser cutting head to solve the above problems existing in the prior art.

[0006] The technical scheme for solving the above technical problems of the utility model is as follows:

[0007] The application discloses an automatic focusing three-dimensional five-axis laser cutting head which comprises a fiber QBH automatic collimation assembly, a C-axis rotating assembly, an A-axis rotating assembly, a light path reflection assembly and a cutting assembly.

[0008] The C-axis rotating assembly comprises a slip ring assembly and a gear assembly, the slip ring assembly is internally provided with a rotating inner core which is in transmission connection with the gear assembly, the rotating inner core is internally formed with a first light channel, and a light source is shot into the first light channel through a light passing hole formed on the slip ring assembly shell.

[0009] The A-axis rotating assembly comprises an A-axis rotary body, the input end of the A-axis rotary body is connected with the rotating inner core, and the A-axis rotary body is internally formed with a second light channel which is in communication with the first light channel.

[0010] The light path reflection assembly comprises a plurality of reflecting mirrors.

[0011] The cutting assembly comprises a mounting seat and a nozzle, the mounting seat is connected with the output end of the A-axis rotary body, the mounting seat is internally provided with a third light channel which is in communication with the second light channel, and a light source is shot out from the nozzle through the third light channel.

[0012] On the basis of the above technical scheme, the application further has the following improvements.

[0013] Further, the A-axis rotary body comprises a mounting plate, a rotating disc and a driving member, the rotating disc is arranged on the mounting plate and is in transmission connection with the driving member arranged on the mounting plate, and the rotating inner core is connected with the rotating disc.

[0014] Further, the reflecting mirrors are arranged at the communication position of the first light channel and the second light channel, the inside of the second light channel and the end of the cutting assembly close to the second light channel through incidence angle adjusting members.

[0015] Further, the cutting assembly further comprises a collimating mirror, a focusing mirror, a focusing seat and a focusing member, the focusing seat is mounted on the mounting seat through the focusing member and is located above the nozzle, and the focusing mirror is mounted in the third light channel and is located above the focusing seat.

[0016] Further, the application further comprises an anti-collision assembly, and the anti-collision assembly is detachably arranged on the outer wall of the input end of the A-axis rotary body.

[0017] Further, the anti-collision assembly is provided with a contact type contact point.

[0018] The application has the following beneficial effects.

[0019] The automatic focusing three-dimensional five-axis laser cutting head has the advantages of compact structure, accurate focusing, perfect protection, strong adaptability and improved efficiency, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a whole structure schematic view of the utility model;

[0021] Fig. 2 It is a structure sectional view of the utility model.

[0022] In the drawings, the components represented by each reference numeral are listed as follows:

[0023] 1, the optical fiber QBH automatic collimation assembly, 2, the C-axis rotation assembly, 21, the gear assembly, 22, the rotating inner core, 3, the A-axis rotation assembly, 31, the mounting plate, 32, the turntable, 33, the driving part, 4, the cutting assembly, 41, the mounting seat, 42, the nozzle, 5, the anti-collision assembly. DETAILED DESCRIPTION

[0024] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0025] As shown in the drawings, Figs. 1-2 The automatic focusing three-dimensional five-axis laser cutting head comprises an optical fiber QBH automatic collimation assembly 1, a C-axis rotation assembly 2, an A-axis rotation assembly 3, a light path reflection assembly and a cutting assembly 4.

[0026] The optical fiber QBH automatic collimation assembly 1 is composed of a servo motor, a lead screw and a collimation mirror, and the center position of the light beam is achieved by adjusting the movement mechanism of the collimation mirror position through the servo motor driving the lead screw.

[0027] The C-axis rotating assembly 2 comprises a slip ring assembly and a gear assembly 21, the slip ring assembly is internally provided with a rotating inner core 22 in transmission connection with the gear assembly 21, the rotating inner core 22 is internally formed with a first light channel, the inner wall is sealed to prevent light leakage, and the light source is shot into the first light channel through a light passing hole formed on the slip ring assembly shell;

[0028] The A-axis rotating assembly 3 comprises an A-axis rotary body, the input end of the A-axis rotary body is connected with the rotating inner core 22, and the A-axis rotary body is internally formed with a second light channel in communication with the first light channel;

[0029] The light path reflection assembly comprises a plurality of reflecting mirrors;

[0030] The cutting assembly 4 comprises a mounting seat 41 and a nozzle 42, the mounting seat 41 is connected with the output end of the A-axis rotary body, the mounting seat 41 is internally provided with a third light channel in communication with the second light channel, and the light source is shot out by the nozzle 42 through the third light channel;

[0031] In addition, the laser cutting head further comprises:

[0032] The cooling assembly adopts water cooling or air cooling to cool the optical element and the motor, so that the stable operation of the equipment in a high-temperature environment is ensured.

[0033] Further, the A-axis rotary body comprises a mounting plate 31, a rotating disc 32 and a driving piece 33, the rotating disc 32 is arranged on the mounting plate 31 and is in transmission connection with the driving piece 33 arranged on the mounting plate 31, the rotating range of the A-axis is ±135°, the rotating inner core 22 is connected with the rotating disc 32, and the stable rotation of the A-axis is ensured.

[0034] Further, the reflecting mirrors are arranged at the communication position of the first light channel and the second light channel, the inside of the second light channel and the end of the cutting assembly 4 close to the second light channel through the incidence angle adjusting pieces.

[0035] Further, the cutting assembly 4 further comprises a collimating mirror, a focusing mirror, a focusing seat and a focusing piece, the focusing seat is installed on the mounting seat 41 through the focusing piece and is located above the nozzle 42, the focusing mirror is installed in the third light channel and is located above the focusing seat, the focusing piece can adjust the distance between the nozzle 42 and the focusing mirror, and the automatic focusing function is realized.

[0036] Further, the anti-collision assembly 5 is detachably arranged on the outer wall of the input end of the A-axis rotary body and is used for protecting the equipment and the workpiece.

[0037] Further, the anti-collision assembly 5 is detachably arranged on the outer wall of the input end of the A-axis rotary body and is used for protecting the equipment and the workpiece.

[0038] When the device works, the light source enters the first light channel through the light hole on the shell of the slip ring assembly, is transmitted to the third light channel of the cutting assembly 4 through the second light channel in the A-axis rotary body, and is finally emitted by the nozzle 42. Among them, a plurality of mirrors are used to ensure the accurate transmission and stability of the light path, the focusing seat is driven by the focusing member to move up and down, so that the distance between the nozzle 42 and the focusing mirror is adjusted, automatic focusing is realized, when the cutting head collides with the workpiece or the frame, the contact sensor triggers, the operation of the cutting head is immediately stopped, and the device and the workpiece are effectively protected.

[0039] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An auto-focusing three-dimensional five-axis laser cutting head, characterized in that, The application relates to an optical fiber QBH automatic collimation assembly, a C-axis rotating assembly, an A-axis rotating assembly, an optical path reflection assembly and a cutting assembly. The C-axis rotating assembly comprises a slip ring assembly and a gear assembly, a rotating inner core is arranged in the slip ring assembly and is in transmission connection with the gear assembly, a first light channel is formed in the rotating inner core, and a light source is injected into the first light channel through a light hole arranged on the slip ring assembly shell. The A-axis rotating assembly comprises an A-axis rotary body, an input end of the A-axis rotary body is connected with the rotating inner core, and a second light channel is formed in the A-axis rotary body and is in communication with the first light channel. The optical path reflection assembly comprises a plurality of reflecting mirrors. The cutting assembly comprises a mounting seat and a nozzle, the mounting seat is connected with an output end of the A-axis rotary body, the mounting seat is provided with a third light channel in communication with the second light channel, and a light source is emitted from the nozzle through the third light channel. The A-axis rotary body comprises a mounting plate, a rotating disc and a driving member, the rotating disc is arranged on the mounting plate and is in transmission connection with the driving member arranged on the mounting plate, and the rotating inner core is connected with the rotating disc.

2. The autofocus three-dimensional five-axis laser cutting head of claim 1, wherein, The reflecting mirrors are arranged at the communication position of the first light channel and the second light channel, the inner position of the second light channel and the end of the cutting assembly close to the second light channel through an incident angle adjusting member.

3. The autofocus three-dimensional five-axis laser cutting head of claim 1, wherein, The cutting assembly further comprises a collimating mirror, a focusing mirror, a focusing seat and a focusing member, the focusing seat is installed on the mounting seat through the focusing member and is located above the nozzle, the focusing mirror is installed in the third light channel and is located above the focusing seat.

4. The autofocus three-dimensional five-axis laser cutting head of claim 1, wherein, The application further relates to an anti-collision assembly which is detachably arranged on the outer wall of the input end of the A-axis rotary body.

5. The autofocusing three-dimensional five-axis laser cutting head according to any one of claims 1 to 4, characterized in that, The anti-collision assembly is provided with a contact type contact.

6. The autofocus three-dimensional five-axis laser cutting head of claim 5, wherein, ​

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