WO2021120400A1 - 一种定距追踪激光清洗设备 - Google Patents
一种定距追踪激光清洗设备 Download PDFInfo
- Publication number
- WO2021120400A1 WO2021120400A1 PCT/CN2020/077757 CN2020077757W WO2021120400A1 WO 2021120400 A1 WO2021120400 A1 WO 2021120400A1 CN 2020077757 W CN2020077757 W CN 2020077757W WO 2021120400 A1 WO2021120400 A1 WO 2021120400A1
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- WIPO (PCT)
- Prior art keywords
- axis moving
- laser
- moving pair
- axis
- cleaning head
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Definitions
- the invention relates to the technical field of laser cleaning, in particular to a fixed distance tracking laser cleaning equipment.
- laser cleaning technology is developed based on the interaction between laser and material. It has the advantages of no pollution to the environment, good cleaning effect, high control accuracy, and less damage to the substrate.
- the research and application of laser cleaning are mainly aimed at planar structures.
- the surface of parts such as airplanes and automobiles is complicated.
- the distance between the laser focus and the surface to be cleaned cannot be controlled. If the distance is not well controlled, it will cause changes in the input energy, resulting in incomplete or excessive cleaning. Even cause damage to the substrate. Therefore, in the laser cleaning process, the distance feedback between the laser head and the workpiece is added to adjust the distance between the laser head and the workpiece in real time. To achieve high-quality laser cleaning of non-planar surfaces.
- the present invention provides a fixed distance tracking laser cleaning equipment to solve the problem that laser cleaning machines on the market cannot clean non-planar workpieces.
- a fixed distance tracking laser cleaning equipment for laser cleaning the surface of a workpiece including:
- a three-axis platform is composed of a workpiece placement platform, an X-axis movement pair, a Y-axis movement pair and a Z-axis movement pair.
- the X-axis movement pair is arranged on both sides of the workpiece placement platform, and the Y-axis movement The pair is installed on the top of the X-axis moving pair, and the Z-axis moving pair is installed on the side of the Y-axis moving pair;
- a laser the laser is placed on one side of a three-axis platform, the laser is connected to a cleaning head through an optical fiber, and the cleaning head is fixed on the side of the Z-axis moving pair;
- a vacuum cleaner the vacuum cleaner is placed on the other side of the three-axis platform, the vacuum cleaner is connected to a dust suction port through a bellows, and the dust suction port is fixedly installed under the cleaning head;
- the controller is connected to the three-axis platform through a communication cable, and the controller respectively controls the operation of the linear guide motors inside the three axes of the X-axis moving pair, the Y-axis moving pair, and the Z-axis moving pair.
- a laser displacement sensor is installed on the moving sliding block of the Z-axis moving pair, and the laser displacement sensor is the same height as the cleaning head. The direction is straight down.
- the laser ejection outlet of the laser displacement sensor is arranged obliquely downward, and the angle between the laser ejection outlet of the laser and the cleaning head is 15-30 degrees, and the distance measurement of the laser displacement sensor The spot coincides with the focal length of the laser beam of the cleaning head, and the laser displacement sensor is electrically connected with the controller.
- the movement directions of the three axes of the X-axis moving pair, the Y-axis moving pair and the Z-axis moving pair are perpendicular to each other, the strokes of the X-axis moving pair and the Y-axis moving pair are 300mm, and the Z-axis The moving auxiliary stroke is 100mm.
- the X-axis moving pair, the Y-axis moving pair and the Z-axis moving pair are driven by a servo motor through a timing belt or a screw rod, and the X-axis moving pair, Y-axis moving pair and Z-axis moving pair are Both ends of the axis moving pair are equipped with photoelectric switch limit.
- the bottom of the cleaning head is equipped with a dust suction pipe
- the dust suction pipe is L-shaped
- one end of the dust suction pipe is connected to a dust suction port
- one end of the dust suction pipe is connected to a bellows
- the bellows is a hose.
- the front of the workpiece placement platform is provided with a control panel and several control buttons, a power switch and a communication interface, and the control panel is connected to a control system integrated in the workpiece placement platform.
- the controller is connected to the communication interface through the corresponding communication cable.
- a workpiece positioning device is installed in the middle of the top end of the workpiece placement platform, and the workpiece positioning device is composed of a long strip plate and a placement table, and the strip placement plate is fixed by screws.
- the placing table is set on the top of the long strip placing board and slidably connected with the strip placing board.
- the laser displacement sensor is used to set the value of the distance from the workpiece.
- the present invention has the beneficial effects: monitors the distance from the workpiece in real time, and feeds back to the controller to control the Z-axis to float up and down.
- the Z-axis drives the cleaning head to ensure that the distance to the workpiece is the laser focus position in real time. Realize laser cleaning of complex curved workpieces.
- Figure 1 is a schematic diagram of the structure of the fixed distance tracking laser cleaning equipment.
- Figure 2 is the second structural diagram of the fixed distance tracking laser cleaning equipment.
- Figure 3 is the control flow chart of the fixed distance tracking laser cleaning equipment.
- Fig. 4 is a schematic diagram of the fixed distance measurement control in the embodiment.
- a fixed distance tracking laser cleaning equipment for laser cleaning the surface of a workpiece including:
- the three-axis platform 1 is composed of a workpiece placement platform 101, an X-axis moving pair 102, a Y-axis moving pair 103 and a Z-axis moving pair 104.
- the X-axis moving pair 102 is set on both sides of the workpiece placing platform 101, Y
- the shaft moving pair 103 is installed on the top of the X-axis moving pair 102, and the Z-axis moving pair 104 is installed on the side of the Y-axis moving pair 103;
- the laser 2 is placed on one side of the three-axis platform 1, the laser 2 is connected to the cleaning head 202 through the optical fiber 201, and the cleaning head 202 is fixed on the side of the Z-axis moving pair 104;
- the vacuum cleaner 3 is placed on the other side of the three-axis platform 1, and the vacuum cleaner 3 is connected to the dust suction port 302 through a bellows 301, and the dust suction port 302 is fixedly installed under the cleaning head 202;
- the controller 4 is connected to the three-axis platform 1 through a communication cable.
- the controller 4 controls the operation of the linear guide motors inside the three axes of the X-axis moving pair 102, the Y-axis moving pair 103, and the Z-axis moving pair 104, respectively.
- a laser displacement sensor 5 is installed on the moving slider of the Z-axis moving pair 104, and the laser displacement sensor 5 is the same height as the cleaning head 202.
- the lower part of the cleaning head 202 is the laser exit, and the laser beam direction is vertically downward.
- the laser exit of the laser displacement sensor 5 is set obliquely downward, and the angle between the laser exit of the laser displacement sensor 5 and the cleaning head 202 is 15-30 degrees, and the distance measuring point of the laser displacement sensor 5 is the focal length of the laser beam of the cleaning head 202.
- the laser displacement sensor 5 and the controller 4 are electrically connected.
- the movement directions of the three axes of X-axis moving pair 102, Y-axis moving pair 103 and Z-axis moving pair 104 are perpendicular to each other, the stroke of X-axis moving pair 102 and Y-axis moving pair 103 is 300mm, and the stroke of Z-axis moving pair 104 is 100mm.
- the X-axis moving pair 102, the Y-axis moving pair 103 and the Z-axis moving pair 104 are driven by a servo motor through a timing belt or a screw rod.
- the two ends of the X-axis moving pair 102, Y-axis moving pair 103 and Z-axis moving pair 104 All are equipped with photoelectric switch limit.
- the bottom of the cleaning head 202 is equipped with a dust suction pipe 303, the dust suction pipe 303 is L-shaped, one end of the dust suction pipe 303 is connected to the dust suction port 302, one end of the dust suction pipe 303 is connected to the bellows 301, the bellows 301 is soft tube.
- the front of the workpiece placement platform 101 is provided with a control panel 105 and a number of control buttons, power switches and communication interfaces.
- the control panel 105 is connected to the control system integrated in the workpiece placement platform 101, and the controller 4 is connected with the corresponding communication cable.
- the communication interface is connected.
- a workpiece positioning device is installed at the middle of the top of the workpiece placement platform 101.
- the workpiece positioning device is composed of a long strip plate and a placement table.
- the long strip placement plate is fixed on the top of the workpiece placement platform 101 by screws, and the placement table is set on the long
- the top of the strip-shaped placing board is slidably connected with the strip-shaped placing board.
- the laser displacement sensor is used to set the value of the distance to the workpiece.
- the controller 4 can set the path cleaning from point A to point B of the workpiece, the controller 4 controls the laser 2 to switch the laser and the vacuum cleaner 3, and the controller 4 controls the X axis movement 102 and Y axis movement of the three-axis platform 1
- the sub 103 drives the cleaning head 202 to move horizontally.
- the laser displacement sensor 5 and the laser beam of the cleaning head 202 are fixed on the Z-axis slider of the Z-axis moving pair 104 at a certain angle, and the beam of the laser displacement sensor 5 has the same position on the workpiece as the beam of the cleaning head 202; laser displacement sensor Values can be set on 5, the distance signal measured by the laser displacement sensor 5 to the workpiece is sent to the signal processing unit for comparison with the set value, and the comparison result is sent to the controller 4 to control the Z-axis movement of the three-axis platform 1.
- 104 moves up and down to adjust the distance between the cleaning head 202 and the workpiece, and keeps it at the focus position in real time. So as to achieve the effect of all-round, accurate and efficient surface cleaning.
Abstract
Description
Claims (9)
- 一种定距追踪激光清洗设备,用于对工件表面进行激光清洗,其特征在于,包括,三轴平台(1),所述三轴平台(1)由工件放置平台(101)、X轴移动副(102)、Y轴移动副(103)和Z轴移动副(104)组成,所述X轴移动副(102)设置在工件放置平台(101)的两侧,所述Y轴移动副(103)安装在X轴移动副(102)的顶部,所述Z轴移动副(104)安装在Y轴移动副(103)的侧面;激光器(2),所述激光器(2)放置在三轴平台(1)的一侧,所述激光器(2)通过光纤(201)与清洗头(202)连接,所述清洗头(202)固定在所述Z轴移动副(104)的侧面;吸尘器(3),所述吸尘器(3)放置在三轴平台(1)的另一侧,吸尘器(3)通过波纹管(301)与吸尘口(302)连接,所述吸尘口(302)固定安装在清洗头(202)的下方;控制器(4),所述控制器(4)通过通信线缆与三轴平台(1)连接,所述控制器(4)分别控制X轴移动副(102)、Y轴移动副(103)和Z轴移动副(104)三轴内部的直线导轨电机的运转。
- 根据权利要求1所述的定距追踪激光清洗设备,其特征在于,所述Z轴移动副(104)的移动滑块上安装有激光位移传感器(5),所述激光位移传感器(5)与清洗头(202)等高,所述清洗头(202)的下方为激光射出口,激光光束方向竖直向下。
- 根据权利要求1所述的一种定距追踪激光清洗设备,其特征在于,所述激光位移传感器(5)的激光射出口斜向下设置,切与清洗头(202)的激光射出口之间呈15-30度夹角,所述激光位移传感器(5)的测距点与清洗头(202)的激光光束焦距重合,所述激光位移传感器(5)与控制器(4)之间电性连接。
- 根据权利要求1所述的一种定距追踪激光清洗设备,其特征在于,所述X轴移动副(102)、Y轴移动副(103)和Z轴移动副(104)三轴的运动方向相互垂直,X轴移动副(102)和Y轴移动副(103)的行程为300mm,Z轴移动副(104)行程为100mm。
- 根据权利要求1所述的一种定距追踪激光清洗设备,其特征在于,所述X轴移动副(102)、Y轴移动副(103)和Z轴移动副(104)采用伺服电机通过同步带或丝杆传动,所述X轴移动副(102)、Y轴移动副(103)和Z轴移动副(104)的两端均装有光电开关限位。
- 根据权利要求1所述的一种定距追踪激光清洗设备,其特征在于,所述清洗头(202)的底部装有吸尘管道(303),所述吸尘管道(303)呈L形,吸尘管道(303)的一端连接吸尘口(302),吸尘管道(303)的一端连接波纹管(301),所述波纹管(301)为软管。
- 根据权利要求1所述的一种定距追踪激光清洗设备,其特征在于,所述工件放置平台(101)的正面设置有控制面板(105)和若干控制按钮、电源开关和通信接口,所述控制面板(105)与集成在工件放置平台(101)内部的控制系统连接,所述控制器(4)通过对应的通信线缆与通信接口相连。
- 根据权利要求1所述的一种定距追踪激光清洗设备,其特征在于,所述工件放置平台(101)顶端中部安装有工件定位装置,所述工件定位装置由长条形板和放置台两部分组成,所述长条形放置板通过螺钉固定在工件放置平台(101)的顶端,所述放置台设置在长条形放置板的顶部并与长条形放置板滑动连接。
- 根据权利要求1所述的一种定距追踪激光清洗设备,其特征在于,所述激光位移传感器用于设定距离工件的数值。
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