Coplanar adjustment method for laser planes of two optical sensors

Abstract

The invention relates to a coplanar adjustment method for laser surfaces of two optical sensors, and belongs to the technical field of optical sensor laser surface adjustment. The laser plane coplanar adjustment method comprises the steps of installing two optical sensors, placing a tool, starting the optical sensors, judging a space state, adjusting a three-dimensional adjustment combination mechanism to enable laser planes of the two optical sensors to be coplanar, and the like. Compared with a method for realizing coplanar adjustment by means of other additional sensors or instrument equipment and the like, the coplanar adjustment of the laser surfaces of the two optical sensors is realized; the method provided by the invention has the characteristics of convenience, high efficiency, low implementation cost, wide application scene, reduction of the technical difficulty in implementation of coplanar adjustment of the laser surfaces of the two optical sensors, and the like, and field personnel can quickly implement coplanar adjustment of the laser surfaces of the two optical sensors.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical sensor laser surface adjustment, and in particular relates to a method for coplanar adjustment of laser surfaces of two optical sensors. Background Art

[0002] With the advancement of machine vision technology and the limitations of contact-based inspection methods, which require contact with the object being inspected, non-contact inspection methods are increasingly being used across various industries. Non-contact inspection applications in different industries may involve larger inspection objects, which a single sensor cannot fully cover. Therefore, multi-sensor combination inspection methods are increasingly being used.

[0003] Currently, coplanar adjustment of multiple laser surfaces is difficult in the implementation of combined line laser optical sensor detection. Existing coplanar adjustment often requires the use of other sensors or adjustment instruments, or relies on optical image processing and calculations to determine coplanarity. This is difficult to adjust and is limited by other reference sensors or instruments, making it unable to meet the general coplanar adjustment needs. Summary of the Invention

[0004] Based on the problems existing in the above-mentioned background technology, the present invention proposes a method for coplanar adjustment of the laser surfaces of two optical sensors, which solves the problem that the existing coplanar adjustment method of the laser surfaces requires the use of other sensors or adjustment instruments, optical image processing or calculation to perform coplanar judgment, which is difficult to adjust and is limited by other reference sensors or instruments, and cannot meet the general coplanar adjustment needs.

[0005] The embodiment of the present invention is achieved as follows: An embodiment of the present invention provides a method for adjusting the coplanarity of laser surfaces of two optical sensors, characterized by comprising the following steps: Step 1. Install two optical sensors: Install the two optical sensors that require laser plane coplanarity adjustment on two three-dimensional adjustment assembly mechanisms, each of which includes an X-axis rotation adjustment platform, a Y-axis translation adjustment platform, and a Z-axis rotation adjustment platform arranged in sequence from top to bottom. The two optical sensors are respectively arranged on the two X-axis rotation adjustment platforms of the two three-dimensional adjustment assembly mechanisms; Step 2: Place a fixture: Place a fixture in the direction of the laser surface irradiation of the two optical sensors, wherein the fixture has two or more planes with a spatial height difference; Step 3. Start the optical sensors: Turn on the two optical sensors. The laser surfaces of the two optical sensors illuminate the double planes or multiple planes on the tooling and form two laser lines on each plane. Step 4: Determine the spatial state: Observe and determine the intersection state of the two laser lines on different planes of the tooling, and determine the spatial state of the laser surfaces of the two optical sensors based on the intersection state; Step 5. Adjust the three-dimensional adjustment combination mechanism to make the laser surfaces of the two optical sensors coplanar: adjust the rotation of the X-axis rotation adjustment platform and the Z-axis rotation adjustment platform and adjust the translation of the Y-axis translation adjustment platform according to the spatial states of the laser surfaces of the two optical sensors until the two laser lines are in a state of overlap on planes with different height differences of the tooling. Lock the X-axis rotation adjustment platform, the Y-axis translation adjustment platform and the Z-axis rotation adjustment platform, evacuate the tooling, and complete the coplanar adjustment of the laser surfaces of the two optical sensors.

[0006] As an optional solution to the above embodiment, the front projection of the tooling is a "convex" structure, the upper end surface of the top of the tooling is the first plane, the upper end surface of the bottom of the tooling is the second plane, and there is a spatial height difference between the first plane and the second plane.

[0007] As an optional solution of the above embodiment, the emission direction of the two optical sensors is the Z-axis direction, the length direction of the laser line is the X-axis direction, and the width direction of the laser line is the Y-axis direction.

[0008] As an optional solution of the above embodiment, in step 4, the spatial states of the two optical sensor laser planes include oblique intersection, parallel intersection, and coplanarity.

[0009] As an optional solution of the above embodiment, in step 5, adjusting the rotation of the X-axis rotation adjustment platform and the Z-axis rotation adjustment platform and adjusting the translation of the Y-axis translation adjustment platform according to the spatial state of the laser surfaces of the two optical sensors includes: When the spatial states of the laser surfaces of the two optical sensors are in an oblique spatial state, turn the Z-axis rotation adjustment platform to adjust the oblique spatial state to a horizontal spatial state; When the spatial states of the laser surfaces of the two optical sensors are in a horizontally intersecting spatial state, turn the X-axis rotation adjustment platform to adjust the horizontally intersecting spatial state to a parallel spatial state; When the spatial states of the laser surfaces of the two optical sensors are in a parallel spatial state, the Y-axis translation adjustment platform is turned to adjust the parallel spatial state to a preliminary coplanar spatial state.

[0010] The preliminary coplanar spatial state is further adjusted to a coplanar state that meets the requirements through X-axis rotation, Z-axis rotation and Y-axis translation.

[0011] The beneficial effects of the present invention are: 1. The present invention provides a method for coplanar adjustment of the laser surfaces of two optical sensors. The method directly adopts a simple tooling structure to achieve the coplanar adjustment of the laser surfaces of the two optical sensors. Compared with the method that requires the use of other additional sensors or instruments and equipment to achieve coplanar adjustment, the method of the present invention has the characteristics of convenience, high efficiency, low implementation cost, and wide adaptability. It enables on-site personnel to quickly achieve the coplanar adjustment of the laser surfaces of the two optical sensors.

[0012] 2. The present invention provides a method for coplanar adjustment of the laser surfaces of two optical sensors, which uses the spatial state of the laser surfaces emitted by the two optical sensors as the basis for coplanar adjustment. It does not rely on external references and reduces repeated adjustment work caused by abnormal changes in the position of external references.

[0013] 3. The present invention provides a method for adjusting the coplanarity of the laser surfaces of two optical sensors. Compared with the method that requires coplanarity judgment based on algorithm processing, it reduces the technical difficulty of implementing the coplanarity adjustment of the laser surfaces of two optical sensors and is less affected by the external environment and image processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive work. The above and other objects, features and advantages of the present invention will become more apparent through the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings. The drawings are not intentionally scaled to their actual sizes, and the focus is on illustrating the main purpose of the present invention.

[0015] Figure 1 The present invention is a flow chart of a method for adjusting the coplanarity of laser surfaces of two optical sensors.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the three-dimensional adjustment combination mechanism in the present invention.

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the X-axis rotation adjustment platform in the three-dimensional adjustment combination mechanism.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the Y-axis translation adjustment platform in the three-dimensional adjustment combination mechanism.

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the Z-axis rotation adjustment platform in the three-dimensional adjustment combination mechanism.

[0020] Figure 6 Schematic diagram of the spatial state of the laser surfaces of two optical sensors being in an oblique spatial state.

[0021] Figure 7 Schematic diagram of the spatial state of the laser surfaces of two optical sensors being in a horizontally intersecting spatial state.

[0022] Figure 8 Schematic diagram of the spatial state of the laser surfaces of two optical sensors being in parallel.

[0023] Figure 9 Schematic diagram of the spatial state of the laser surfaces of two optical sensors being coplanar.

[0024] Among them, 1. Optical sensor; 2. Three-dimensional adjustment combination mechanism; 201. X-axis rotation adjustment platform; 202. Y-axis translation adjustment platform; 203. Z-axis rotation adjustment platform; 3. Tooling; 301. First plane; 302. Second plane. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0029] Please refer to Figures 1 to 5 As shown, the present invention provides a method for adjusting the coplanarity of laser surfaces of two optical sensors, characterized by comprising the following steps: Step 1: Install two optical sensors 1: Install the two optical sensors 1 that need to adjust the laser surface coplanarity on two three-dimensional adjustment assembly mechanisms 2. Each of the three-dimensional adjustment assembly mechanisms 1 includes an X-axis rotation adjustment platform 201, a Y-axis translation adjustment platform 202, and a Z-axis rotation adjustment platform 203, which are arranged in sequence from top to bottom. The two optical sensors 1 are respectively arranged on the two X-axis rotation adjustment platforms 201 of the two three-dimensional adjustment assembly mechanisms 2. Specifically, the emission direction of the two optical sensors 1 is the Z-axis direction, the length direction of the laser line is the X-axis direction, and the width direction of the laser line is the Y-axis direction. In this embodiment, the model of the X-axis rotation adjustment platform 201 is the Misumi GPG60-100 high-precision manual rotary slide, the model of the Y-axis translation adjustment platform 202 is the Misumi XLPG60 manual fine-tuning displacement platform, and the model of the Z-axis rotation adjustment platform 203 is the Misumi RPGT100 high-precision manual rotary slide.

[0030] Step 2, place the tooling 3: Place a tooling 3 in the irradiation direction of the laser surfaces of the two optical sensors 1. The tooling 3 has two or more planes with a spatial height difference, so that the laser line formed by the optical sensor 1 on the two planes with a spatial height difference of the adjustment tooling can be used to judge the spatial state of the laser surface of the optical sensor 1.

[0031] Step 3, start the optical sensors 1: turn on the two optical sensors 1, and the laser surfaces of the two optical sensors 1 illuminate the double planes or multiple planes on the tooling 3, and form two laser lines on each plane; Step 4, determine the spatial state: observe and determine the intersection state of the two laser lines on different planes of the tooling 3, and determine the spatial state of the laser surfaces of the two optical sensors 1 by the intersection state; specifically, Figures 6 to 9 As shown, the spatial states of the two laser planes of the optical sensors 1 include oblique intersection, parallel intersection, and coplanarity.

[0032] Step 5. Adjust the three-dimensional adjustment combination mechanism 2 so that the laser surfaces of the two optical sensors 1 are coplanar: adjust the rotation of the X-axis rotation adjustment platform 201 and the Z-axis rotation adjustment platform 203 and adjust the translation of the Y-axis translation adjustment platform 202 according to the spatial state of the laser surfaces of the two optical sensors 1 until the two laser lines are in a state of overlap on planes of different height differences of the tooling 3. Lock the X-axis rotation adjustment platform 201, the Y-axis translation adjustment platform 202 and the Z-axis rotation adjustment platform 203, evacuate the tooling 3, and complete the coplanar adjustment of the laser surfaces of the two optical sensors 1.

[0033] Specifically, if Figures 6 to 9As shown, the front projection of the tooling 3 is a "convex" structure, the upper end surface of the top of the tooling 3 is a first plane 301, and the upper end surface of the bottom of the tooling 3 is a second plane 302. There is a spatial height difference between the first plane 301 and the second plane 302.

[0034] Adjusting the rotation of the X-axis rotation adjustment platform 201 and the Z-axis rotation adjustment platform 203 and adjusting the translation of the Y-axis translation adjustment platform 202 according to the spatial states of the laser surfaces of the two optical sensors includes: like Figure 6 As shown, when the spatial states of the laser surfaces of the two optical sensors 1 are in an oblique spatial state, the Z-axis rotation adjustment platform 203 is adjusted to adjust the oblique spatial state to a horizontal spatial state; like Figure 7 As shown, when the spatial states of the laser surfaces of the two optical sensors 1 are in a horizontally intersecting spatial state, the X-axis rotation adjustment platform 201 is adjusted to adjust the horizontally intersecting spatial state to a parallel spatial state; like Figure 8 As shown, when the spatial states of the laser surfaces of the two optical sensors 1 are in a parallel spatial state, the Y-axis translation adjustment platform 202 is turned to adjust the parallel spatial state to a preliminary coplanar spatial state.

[0035] like Figure 9 As shown, the preliminary coplanar spatial state is further adjusted to a coplanar state that meets the requirements through X-axis rotation, Z-axis rotation and Y-axis translation.

[0036] In summary, the present invention provides a method for coplanar adjustment of the laser surfaces of two optical sensors, which directly uses a simple tooling 3 to achieve coplanar adjustment of the laser surfaces of the two optical sensors 1. Compared with the method that requires the use of other additional sensors or instruments and equipment to achieve coplanar adjustment, the method of the present invention has the characteristics of convenience, high efficiency, low implementation cost, and wide adaptability, which enables on-site personnel to quickly achieve coplanar adjustment of the laser surfaces of the two optical sensors 1. The spatial state of the laser surfaces emitted by the two optical sensors 1 is used as the basis for coplanar adjustment, which does not rely on external references and reduces repeated adjustment work caused by abnormal changes in the position of external references. Compared with the method that requires coplanar judgment based on algorithmic processing, the technical difficulty of achieving coplanar adjustment of the laser surfaces of the two optical sensors 1 is reduced, and it is less affected by the outside world and the accuracy of image processing.

[0037] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for adjusting the coplanarity of laser surfaces of two optical sensors, characterized in that: The following steps are involved: Step 1. Install two optical sensors: Install the two optical sensors that require laser plane coplanarity adjustment on two three-dimensional adjustment assembly mechanisms, each of which includes an X-axis rotation adjustment platform, a Y-axis translation adjustment platform, and a Z-axis rotation adjustment platform arranged in sequence from top to bottom. The two optical sensors are respectively arranged on the two X-axis rotation adjustment platforms of the two three-dimensional adjustment assembly mechanisms; Step 2: Place a fixture: Place a fixture in the direction of the laser surface irradiation of the two optical sensors, wherein the fixture has two or more planes with a spatial height difference; Step 3. Start the optical sensors: Turn on the two optical sensors. The laser surfaces of the two optical sensors illuminate the double planes or multiple planes on the tooling and form two laser lines on each plane. Step 4: Determine the spatial state: Observe and determine the intersection state of the two laser lines on different planes of the tooling, and determine the spatial state of the laser surfaces of the two optical sensors based on the intersection state; Step 5. Adjust the three-dimensional adjustment combination mechanism to make the laser surfaces of the two optical sensors coplanar: adjust the rotation of the X-axis rotation adjustment platform and the Z-axis rotation adjustment platform and adjust the translation of the Y-axis translation adjustment platform according to the spatial states of the laser surfaces of the two optical sensors until the two laser lines are in a state of overlap on planes with different height differences of the tooling. Lock the X-axis rotation adjustment platform, the Y-axis translation adjustment platform and the Z-axis rotation adjustment platform, evacuate the tooling, and complete the coplanar adjustment of the laser surfaces of the two optical sensors.

2. The method for adjusting the coplanarity of laser surfaces of two optical sensors according to claim 1, characterized in that: The front projection of the tooling is a "convex" structure, the upper end surface of the top of the tooling is a first plane, the upper end surface of the bottom of the tooling is a second plane, and there is a spatial height difference between the first plane and the second plane.

3. The method for adjusting the coplanarity of laser surfaces of two optical sensors according to claim 1, characterized in that: The emission directions of the two optical sensors are the Z-axis direction, the length direction of the laser line is the X-axis direction, and the width direction of the laser line is the Y-axis direction.

4. The method for adjusting the coplanarity of laser surfaces of two optical sensors according to claim 3, characterized in that: In step 4, the spatial states of the two optical sensor laser planes include oblique intersection, parallel intersection, and coplanarity.

5. The method for adjusting the coplanarity of laser surfaces of two optical sensors according to claim 4, characterized in that: In step 5, adjusting the rotation of the X-axis rotation adjustment platform and the Z-axis rotation adjustment platform and adjusting the translation of the Y-axis translation adjustment platform according to the spatial states of the laser surfaces of the two optical sensors includes: When the spatial states of the laser surfaces of the two optical sensors are in an oblique spatial state, turn the Z-axis rotation adjustment platform to adjust the oblique spatial state to a horizontal spatial state; When the spatial states of the laser surfaces of the two optical sensors are in a horizontally intersecting spatial state, turn the X-axis rotation adjustment platform to adjust the horizontally intersecting spatial state to a parallel spatial state; When the spatial states of the laser surfaces of the two optical sensors are in a parallel spatial state, the Y-axis translation adjustment platform is turned to adjust the parallel spatial state to a preliminary coplanar spatial state. The preliminary coplanar spatial state is further adjusted to a coplanar state that meets the requirements through X-axis rotation, Z-axis rotation and Y-axis translation.

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