Laser processing galvanometer capable of continuously measuring distance

Abstract

The utility model discloses a laser processing galvanometer capable of continuously measuring distance, which comprises a shell, the side wall of the shell is connected with a light reflecting mechanism, one inner side wall of the shell is connected with a light splitting unit, the side wall of the shell is provided with a light inlet hole, the light inlet hole is opposite to the light splitting mechanism, and the top of the shell is connected with a laser displacement sensor. The laser displacement sensor is arranged right above the light splitting unit, and the bottom of the shell is connected with a field lens assembly. In a laser processing operation process, laser from the laser device is focused on different parts of a working surface of a target object through the light splitting unit and the field lens assembly, light rays irradiated on the working surface of the target object at different parts are reflected, the built-in lens focuses the reflected light rays, and the focused reflected light rays are output to the optical signal receiver; and after the captured optical signal is digitally processed, the distance measurement function is realized.

Description

Technical Field

[0001] This utility model belongs to the field of laser processing equipment technology, specifically relating to a laser processing galvanometer for continuous ranging. Background Technology

[0002] Laser processing technology, with its advantages of high precision, high efficiency, and non-contact processing, has been widely used in many fields. As a key actuator in laser processing systems, the laser galvanometer can quickly and accurately control the deflection of the laser beam, enabling flexible scanning of the processing area and greatly improving the efficiency and precision of laser processing. However, when processing workpieces with complex three-dimensional structures, the actual distance between each point on the workpiece surface and the laser processing head cannot be known in advance. This can lead to uneven energy distribution due to defocusing of the laser beam during propagation, resulting in unstable processing quality and problems such as inconsistent processing depth and large differences in edge roughness.

[0003] Existing laser galvanometers use a rotating lead screw to position the laser focusing distance and processing depth. Before processing, the laser focusing and processing depth must be pre-positioned, which makes it difficult to achieve precise positioning. Due to human factors, it is difficult to guarantee the accuracy and consistency of the laser focusing distance and processing depth in actual operation. Utility Model Content

[0004] The purpose of this invention is to provide a laser processing galvanometer for continuous ranging, which solves the problem that it is difficult to achieve accurate real-time positioning of processing depth in the prior art.

[0005] The technical solution adopted by this utility model is: a laser processing galvanometer for continuous ranging, including a housing, a reflective mechanism connected to the side wall of the housing, a beam splitting unit connected to the inner side wall of the housing, an entrance hole opened on the side wall of the housing, the entrance hole being arranged opposite to the beam splitting mechanism, a laser displacement sensor connected to the top of the housing, the laser displacement sensor being arranged directly above the beam splitting unit, and a field lens assembly connected to the bottom of the housing.

[0006] The feature of this utility model is that,

[0007] The outer casing has a locking hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the locking hole. The clamping unit is connected to the reflective mechanism.

[0008] The clamping unit includes two clamping plates arranged opposite each other. Each clamping plate has a clamping hole on one side opposite to the other. The reflective mechanism matches the clamping hole, and both clamping plates are snapped into the hole.

[0009] The side of the clamping plate opposite to the clamping hole is connected to the card hole by bolts.

[0010] The reflective mechanism includes a first galvanometer motor and a second galvanometer motor. The output ends of the first galvanometer motor and the second galvanometer motor are both connected to reflectors. Both reflectors are set inside the housing. The reflector on the first galvanometer motor is arranged opposite to the light entrance hole. The first galvanometer motor and the second galvanometer motor are respectively clamped in the clamping hole.

[0011] The beam splitting unit includes a connecting frame, one side of which is connected to the inner wall of the housing. A beam splitter is connected to the bottom of the connecting frame and is positioned at an angle. The beam splitter is positioned directly below the laser displacement sensor and is located between the field lens assembly and the laser displacement sensor.

[0012] The beam splitter and the inner wall of the connecting bracket housing form an angle of +45° or -45°.

[0013] The laser displacement sensor has an internal laser connected to it. The laser is positioned directly above the beam splitter. A built-in lens is located on one side of the laser, which is also positioned directly above the beam splitter. A light signal receiver is located above the built-in lens.

[0014] The beneficial effects of this utility model are as follows: A laser processing galvanometer with continuous ranging capability integrates a laser displacement sensor within the galvanometer, enabling continuous ranging. The near and far positions of the target object reflect the sensor output light. The reflected light passes through the field lens of the field lens assembly and the beam splitter of the beam splitter assembly, reflecting the reflected light onto the lens of the laser displacement sensor. The lens of the laser displacement sensor focuses the received reflected light, which is then received by the optical signal receiver of the laser displacement sensor, forming data capture. An external signal processor component enables data capture and parameter data processing. Simultaneously, by measuring the photosensitive position difference between the near and far positions of the laser on the target object, the distance between the laser galvanometer and the target object can be measured. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the laser processing galvanometer for sustainable ranging according to this utility model;

[0016] Figure 2 This is a side view of the laser processing galvanometer for sustainable ranging according to this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the laser processing galvanometer for sustainable ranging according to this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the laser displacement sensor in the laser processing galvanometer for sustainable ranging according to this utility model.

[0019] In the figure, 1. outer shell, 2. laser displacement sensor, 21. laser, 22. built-in lens, 23. optical signal receiver, 3. light entrance hole, 4. first galvanometer motor, 5. second galvanometer motor, 6. field lens assembly, 7. connecting frame, 8. beam splitter, 9. clamping plate, 10. clamping hole, 11. reflector. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] This invention provides a laser processing galvanometer for sustainable ranging, such as... Figure 1-2 As shown, the device includes a housing 1, a reflector mechanism connected to the side wall of the housing 1, a beam splitting unit connected to the inner side wall of the housing 1, and an entrance hole 3 on the side wall of the housing 1, which is positioned opposite to the beam splitting mechanism. A laser displacement sensor 2 is connected to the top of the housing 1 and is positioned directly above the beam splitting unit. A field lens assembly 6 is connected to the bottom of the housing 1. The laser light entering the housing 1 through the entrance hole 3 has its optical path changed by the reflector mechanism, and then reflected by the beam splitting unit to the field lens assembly. The field lens assembly focuses the laser light onto the working surface of the target object for laser processing. The laser displacement sensor 2 enables continuous ranging.

[0022] Example 1

[0023] A laser processing galvanometer for continuous ranging includes a housing 1, a reflective mechanism connected to the side wall of the housing 1, a beam splitting unit connected to an inner side wall of the housing 1, an entrance hole 3 opened on the side wall of the housing 1, the entrance hole 3 being arranged opposite to the beam splitting mechanism, a laser displacement sensor 2 connected to the top of the housing 1, the laser displacement sensor 2 being positioned directly above the beam splitting unit, and a field lens assembly 6 connected to the bottom of the housing 1.

[0024] The outer casing 1 has a locking hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the locking hole. The clamping unit is connected to the reflector mechanism. The reflector mechanism is engaged in the locking hole through the clamping unit, which facilitates disassembly and maintenance.

[0025] Example 2

[0026] A laser processing galvanometer for continuous ranging includes a housing 1, a reflective mechanism connected to the side wall of the housing 1, a beam splitting unit connected to an inner side wall of the housing 1, an entrance hole 3 opened on the side wall of the housing 1, the entrance hole 3 being arranged opposite to the beam splitting mechanism, a laser displacement sensor 2 connected to the top of the housing 1, the laser displacement sensor 2 being positioned directly above the beam splitting unit, and a field lens assembly 6 connected to the bottom of the housing 1.

[0027] The outer casing 1 has a locking hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the locking hole. The clamping unit is connected to the reflective mechanism.

[0028] like Figure 3 As shown, the clamping unit includes two clamping plates 9 arranged opposite each other. Each clamping plate 9 has a clamping hole 10 on one side opposite to the other. The reflective mechanism matches the clamping hole 10, and both clamping plates 9 are engaged in the clamping hole. Each clamping hole 10 is a semi-circular structure. The two clamping plates 9 are engaged in the clamping hole, and the two semi-circular clamping holes 10 are put together to form a complete circular structure, which clamps the reflective mechanism.

[0029] The clamping plate 9 is bolted to the locking hole on the side opposite to the clamping hole 10. The clamping plate 9 is then bolted to the locking hole, that is, connected to the inner wall of the outer casing 1, to ensure the stability of the clamping plate 9.

[0030] Example 3

[0031] A laser processing galvanometer for continuous ranging includes a housing 1, a reflective mechanism connected to the side wall of the housing 1, a beam splitting unit connected to an inner side wall of the housing 1, an entrance hole 3 opened on the side wall of the housing 1, the entrance hole 3 being arranged opposite to the beam splitting mechanism, a laser displacement sensor 2 connected to the top of the housing 1, the laser displacement sensor 2 being positioned directly above the beam splitting unit, and a field lens assembly 6 connected to the bottom of the housing 1.

[0032] The outer casing 1 has a locking hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the locking hole. The clamping unit is connected to the reflective mechanism.

[0033] The clamping unit includes two clamping plates 9 arranged opposite each other. Each clamping plate 9 has a clamping hole 10 on one side opposite to the other. The reflective mechanism matches the clamping hole 10, and both clamping plates 9 are engaged in the clamping hole.

[0034] The clamping plate 9 is connected to the clamping hole on the side opposite to the clamping hole 10 by bolts.

[0035] The reflecting mechanism includes a first galvanometer motor 4 and a second galvanometer motor 5. The output ends of both motors are connected to reflectors 11. Both reflectors 11 are housed within the outer casing 1. The reflector 11 on the first galvanometer motor 4 is positioned opposite the light entrance aperture 3. The first galvanometer motor 4 and the second galvanometer motor 5 are respectively clamped within clamping holes 10. Laser light entering through the light entrance aperture 3 has its optical path altered by the reflectors 11 on both the first and second galvanometer motors.

[0036] Example 4

[0037] A laser processing galvanometer for continuous ranging includes a housing 1, a reflective mechanism connected to the side wall of the housing 1, a beam splitting unit connected to an inner side wall of the housing 1, an entrance hole 3 opened on the side wall of the housing 1, the entrance hole 3 being arranged opposite to the beam splitting mechanism, a laser displacement sensor 2 connected to the top of the housing 1, the laser displacement sensor 2 being positioned directly above the beam splitting unit, and a field lens assembly 6 connected to the bottom of the housing 1.

[0038] The outer casing 1 has a locking hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the locking hole. The clamping unit is connected to the reflective mechanism.

[0039] The clamping unit includes two clamping plates 9 arranged opposite each other. Each clamping plate 9 has a clamping hole 10 on one side opposite to the other. The reflective mechanism matches the clamping hole 10, and both clamping plates 9 are engaged in the clamping hole.

[0040] The clamping plate 9 is connected to the clamping hole on the side opposite to the clamping hole 10 by bolts.

[0041] The reflective mechanism includes a first galvanometer motor 4 and a second galvanometer motor 5. The output ends of the first galvanometer motor 4 and the second galvanometer motor 5 are both connected to a reflector 11. Both reflectors 11 are set inside the housing 1. The reflector 11 on the first galvanometer motor 4 is arranged opposite to the light entrance hole 3. The first galvanometer motor 4 and the second galvanometer motor 5 are respectively clamped in the clamping hole 10.

[0042] The beam splitting unit includes a connecting frame 7, one side of which is connected to the inner wall of the housing 1. A tilted beam splitter 8 is connected to the bottom of the connecting frame 7, positioned directly below the laser displacement sensor 2. The beam splitter 8 is located between the field lens assembly 6 and the laser displacement sensor 2. The connecting frame 7 is bolted to one of the inner walls of the housing 1. The laser, with its altered optical path, passes through the beam splitter 8 and the field lens assembly 6, and is focused onto the processing surface of the target object, thus achieving laser processing.

[0043] Example 5

[0044] A laser processing galvanometer for continuous ranging includes a housing 1, a reflective mechanism connected to the side wall of the housing 1, a beam splitting unit connected to an inner side wall of the housing 1, an entrance hole 3 opened on the side wall of the housing 1, the entrance hole 3 being arranged opposite to the beam splitting mechanism, a laser displacement sensor 2 connected to the top of the housing 1, the laser displacement sensor 2 being positioned directly above the beam splitting unit, and a field lens assembly 6 connected to the bottom of the housing 1.

[0045] The outer casing 1 has a locking hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the locking hole. The clamping unit is connected to the reflective mechanism.

[0046] The clamping unit includes two clamping plates 9 arranged opposite each other. Each clamping plate 9 has a clamping hole 10 on one side opposite to the other. The reflective mechanism matches the clamping hole 10, and both clamping plates 9 are engaged in the clamping hole.

[0047] The clamping plate 9 is connected to the clamping hole on the side opposite to the clamping hole 10 by bolts.

[0048] The reflective mechanism includes a first galvanometer motor 4 and a second galvanometer motor 5. The output ends of the first galvanometer motor 4 and the second galvanometer motor 5 are both connected to a reflector 11. Both reflectors 11 are set inside the housing 1. The reflector 11 on the first galvanometer motor 4 is arranged opposite to the light entrance hole 3. The first galvanometer motor 4 and the second galvanometer motor 5 are respectively clamped in the clamping hole 10.

[0049] The beam splitting unit includes a connecting frame 7, one side of which is connected to the inner wall of the housing 1. A beam splitter 8 is connected to the bottom of the connecting frame 7 and is set at an angle. The beam splitter 8 is set directly below the laser displacement sensor 2 and is set between the field lens assembly 6 and the laser displacement sensor 2.

[0050] The beam splitter 8 forms an angle of +45° or -45° with the inner wall of the outer casing 1 of the connecting bracket 7. The beam splitter 8 both reflects and projects light.

[0051] Example 6

[0052] A laser processing galvanometer for continuous ranging includes a housing 1, a reflective mechanism connected to the side wall of the housing 1, a beam splitting unit connected to an inner side wall of the housing 1, an entrance hole 3 opened on the side wall of the housing 1, the entrance hole 3 being arranged opposite to the beam splitting mechanism, a laser displacement sensor 2 connected to the top of the housing 1, the laser displacement sensor 2 being positioned directly above the beam splitting unit, and a field lens assembly 6 connected to the bottom of the housing 1.

[0053] The outer casing 1 has a locking hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the locking hole. The clamping unit is connected to the reflective mechanism.

[0054] The clamping unit includes two clamping plates 9 arranged opposite each other. Each clamping plate 9 has a clamping hole 10 on one side opposite to the other. The reflective mechanism matches the clamping hole 10, and both clamping plates 9 are engaged in the clamping hole.

[0055] The clamping plate 9 is connected to the clamping hole on the side opposite to the clamping hole 10 by bolts.

[0056] The reflective mechanism includes a first galvanometer motor 4 and a second galvanometer motor 5. The output ends of the first galvanometer motor 4 and the second galvanometer motor 5 are both connected to a reflector 11. Both reflectors 11 are set inside the housing 1. The reflector 11 on the first galvanometer motor 4 is arranged opposite to the light entrance hole 3. The first galvanometer motor 4 and the second galvanometer motor 5 are respectively clamped in the clamping hole 10.

[0057] The beam splitting unit includes a connecting frame 7, one side of which is connected to the inner wall of the housing 1. A beam splitter 8 is connected to the bottom of the connecting frame 7 and is set at an angle. The beam splitter 8 is set directly below the laser displacement sensor 2 and is set between the field lens assembly 6 and the laser displacement sensor 2.

[0058] The beam splitter 8 and the inner wall of the outer shell 1 of the connecting bracket 7 form an angle of +45° or -45°.

[0059] like Figure 4 As shown, a laser 21 is connected to the inner wall of the laser displacement sensor 2. The laser 21 is positioned directly above the beam splitter 8. A built-in lens 22 is located on one side of the laser 21, also positioned directly above the beam splitter 8. A light signal receiver 23 is positioned above the built-in lens 22. The upper part of the laser displacement sensor 2 extends through the top surface of the housing 1. One end of the laser 21, located outside the top surface of the housing 1, is connected to a connection port electrically connected to the light signal receiver 23. This connection port is electrically connected to the signal processor and the display screen. The laser 21 outputs light, which passes through the beam splitter 8 and the field lens assembly 6, reaching the target object's processing surface. After reflection, the light is focused by the built-in lens 22 and received by the light signal receiver 23. The light signal receiver 23 then converts the light into an electrical signal, which is output to the signal processor through the connection port. During laser processing, the signal processor calculates the distance between the laser galvanometer and the processing object based on the positional difference between the laser beams received on the target object's processing surface, and displays the result on the display, thus achieving continuous laser ranging functionality. Only when the laser displacement sensor 2, the beam splitter 8, the field mirror assembly 6, and the laser reflected by the second galvanometer motor 5 onto the beam splitter 8 form an optical path that can achieve processing and distance measurement.

[0060] The working principle of this novel laser processing galvanometer for continuous ranging is as follows:

[0061] The laser enters the galvanometer housing 1 through the light entrance 3, is reflected by the reflectors 11 on the first galvanometer motor 4 and the second galvanometer motor 5, and reaches the beam splitter 8. Then, it passes through the working surface of the field lens assembly 6 for laser processing. During the laser processing operation, the laser 21 continuously outputs light, and the light passes through the beam splitter 8 and the field lens assembly 6 to capture the target object. The continuous output of light can capture the near and far positions of the target object. At the same time, the near and far positions of the target object reflect the laser light output from the laser 21. The reflected light passes through the field lens assembly 6 and the beam splitter 8 and is reflected onto the built-in lens 22. The built-in lens 22 focuses the received reflected light, and the focused reflected light is received by the optical signal receiver 23, forming data capture. The optical signal receiver 23 is electrically connected to the external signal processor of the laser displacement sensor. The external signal processor component, the optical signal receiver 23, converts the optical signal into an electrical signal and outputs it to the signal processor through the connection port to realize data capture and parameter data processing. At the same time, by measuring the difference in photosensitive position between the laser at the near end and far end of the target object, the distance between the laser galvanometer and the target object can be measured and displayed on the external display screen.

[0062] This invention relates to a laser processing galvanometer for continuous ranging. During the laser processing operation, the laser light from the laser is focused onto different parts of the working surface of the target object by a beam splitter and a field lens assembly. The light illuminating the working surface of the target object at different parts is reflected, and the reflected light is focused by a built-in lens. The focused reflected light is output to a light signal receiver, and the captured light signal is digitally processed to realize the ranging function.

Claims

1. A laser processing galvanometer for continuous ranging, characterized in that, The device includes a housing (1), a reflective mechanism connected to the side wall of the housing (1), a beam splitting unit connected to an inner side wall of the housing (1), an entrance hole (3) opened on the side wall of the housing (1), the entrance hole (3) being disposed opposite to the beam splitting mechanism, a laser displacement sensor (2) connected to the top of the housing (1), the laser displacement sensor (2) being disposed directly above the beam splitting unit, and a field lens assembly (6) connected to the bottom of the housing (1).

2. The laser processing galvanometer for continuous ranging as described in claim 1, characterized in that, The outer casing (1) has a card hole in the middle of the adjacent two side walls, and a clamping unit is engaged in the card hole. The clamping unit is connected to the reflective mechanism.

3. The laser processing galvanometer for continuous ranging as described in claim 2, characterized in that, The clamping unit includes two clamping plates (9) arranged opposite to each other. Each clamping plate (9) has a clamping hole (10) on one side opposite to the other. The reflective mechanism matches the clamping hole (10), and both clamping plates (9) are engaged in the clamping hole.

4. The laser processing galvanometer for continuous ranging as described in claim 3, characterized in that, The clamping plate (9) is bolted to the card hole on the side opposite to the clamping hole (10).

5. The laser processing galvanometer for continuous ranging as described in claim 3, characterized in that, The reflective mechanism includes a first galvanometer motor (4) and a second galvanometer motor (5). The output ends of the first galvanometer motor (4) and the second galvanometer motor (5) are connected to reflectors (11). The two reflectors (11) are both located inside the housing (1). The reflector (11) on the first galvanometer motor (4) is arranged opposite to the light entrance hole (3). The first galvanometer motor (4) and the second galvanometer motor (5) are respectively clamped in the clamping hole (10).

6. The laser processing galvanometer for continuous ranging as described in claim 1, characterized in that, The beam splitting unit includes a connecting frame (7), one side of which is connected to the inner wall of the outer shell (1). The bottom of the connecting frame (7) is connected to an inclined beam splitter (8), which is located directly below the laser displacement sensor (2). The beam splitter (8) is located between the field lens assembly (6) and the laser displacement sensor (2).

7. The laser processing galvanometer for continuous ranging as described in claim 6, characterized in that, The beam splitter (8) forms an angle of +45° or -45° with the inner wall of the outer shell (1) of the connecting frame (7).

8. The laser processing galvanometer for continuous ranging as described in claim 6, characterized in that, The inner wall of the laser displacement sensor (2) is connected to a laser (21), which is located directly above the beam splitter (8). A built-in lens (22) is provided on one side of the laser (21), which is also located directly above the beam splitter (8). A light signal receiver (23) is provided above the built-in lens (22).

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