Rotating mirror assembling tool, device and method

Abstract

The invention relates to a rotating mirror assembling tool, device and method.The rotating mirror assembling tool is used for assembling a rotating mirror and comprises a negative pressure adsorption tool, a support tool and an adjusting mechanism, the negative pressure adsorption tool comprises an adsorption end for fixing a reflective mirror in a negative pressure adsorption mode, a positioning seat is arranged on the support tool and used for positioning a rotating mirror support, and the adjusting mechanism is arranged on the support tool; the positioning seat is matched with the rotating mirror bracket, so that the circumferential angle of the rotating mirror bracket can be converted through the matching of the positioning seat and the rotating mirror bracket, any reflector fixing surface can be converted to the position facing the adsorption end, and the adjusting mechanism is used for adjusting the position posture of the adsorption end, so that the position posture of the reflector adsorbed on the adsorption end is adjusted. The invention further provides a rotating mirror assembling device with the rotating mirror assembling tool and a corresponding rotating mirror assembling method. The reflective mirror is adsorbed and fixed through the negative pressure adsorption tool, the position posture of the reflective mirror is adjusted by adjusting the position posture of the negative pressure adsorption tool, and the quality defects such as collision and scraping of the reflective mirror are avoided.

Description

Technical Field

[0001] The present invention relates to the technology of manufacturing a rotating mirror, and specifically relates to an assembly tooling, device and method for a rotating mirror bracket and a reflecting mirror. Background Art

[0002] The rotating mirror device is an important component of a scanning lidar. By rapidly rotating the rotating mirror, a large-range scanning of the laser beam can be achieved. The rotating mirror generally includes a rotating mirror bracket and a reflecting mirror. The rotating mirror bracket is provided with a plurality of reflecting mirror fixing surfaces, and the plurality of reflecting mirror fixing surfaces are uniformly arranged around the axis of the rotating mirror bracket on the outer periphery of the rotating mirror bracket. A reflecting mirror is fixed on each reflecting mirror fixing surface. The accuracy of the reflecting surface has a great influence on the accuracy of the scanning lidar and subsequent data processing. Therefore, when manufacturing the rotating mirror, the position consistency of each reflecting surface should be ensured. Currently, a common method for assembling a rotating mirror is to separately manufacture the rotating mirror bracket and the reflecting mirror, and bond the reflecting mirrors one by one on the reflecting mirror fixing surfaces. Due to manufacturing errors and assembly errors, the position accuracy of the reflecting mirrors of the rotating mirror manufactured by this method is relatively low, and it is difficult to ensure the consistency of the reflecting surfaces. Based on the above problems, Patent Application CN114527566A proposes a manufacturing method for a rotating mirror device, which calibrates the positions of the reflecting mirrors through the projection spots generated by the laser emitted by the laser emitter after being reflected by the reflecting mirrors. However, in this patent application, the reflecting mirror is first placed in the mirror groove on the rotating mirror bracket, and the reflecting mirror can shake in the mirror groove. During the position adjustment process of the reflecting mirror, it is easy to cause collisions and scratches between the reflecting mirror and the mirror groove, affecting the mirror surface quality of the reflecting mirror. Summary of the Invention

[0003] Therefore, in view of the above problems, the present invention proposes a rotating mirror assembly tooling and device with optimized structures, and also proposes an optimized rotating mirror assembly method.

[0004] The present invention is implemented by adopting the following technical solutions:

[0005] The present invention proposes a rotating mirror assembly tooling for assembling a rotating mirror. The rotating mirror includes a rotating mirror bracket and a plurality of reflecting mirrors. The rotating mirror bracket is fixedly provided with a plurality of reflecting mirror fixing surfaces, and includes: a negative pressure adsorption tooling, a bracket tooling and an adjustment mechanism. The negative pressure adsorption tooling includes an adsorption end for fixing the reflecting mirror by negative pressure adsorption. The bracket tooling is provided with a positioning seat for positioning the rotating mirror bracket, and the cooperation between the positioning seat and the rotating mirror bracket can allow the rotating mirror bracket to convert its circumferential angle, so that any one of the reflecting mirror fixing surfaces can be converted to a position facing the adsorption end. The adjustment mechanism is used to adjust the position and attitude of the adsorption end, and further adjust the position and attitude of the reflecting mirror adsorbed on the adsorption end.

[0006] In one embodiment, preferably, at least one of the positioning seat and the adsorption end is set to be movable, so that the positioning seat and the adsorption end can approach each other relatively, causing one of the mirror fixing surfaces of the rotary mirror bracket on the positioning seat to be attached to the mirror on the adsorption end, or the positioning seat and the adsorption end can move away from each other relatively to create a space for the rotary mirror bracket to change its circumferential angle.

[0007] In one embodiment, preferably, the negative pressure adsorption tooling includes a negative pressure chamber. One end of the negative pressure chamber relatively close to the bracket tooling is the adsorption end, and the other end of the negative pressure chamber relatively far from the adsorption end is provided with a light-transmitting part.

[0008] In one embodiment, preferably, the positioning seat is a fixed support. The circumferential angle of the rotary mirror bracket is changed by positioning and placing the rotary mirror bracket on the fixed support at different circumferential angles; alternatively, the positioning seat is a rotating support, and the rotary mirror bracket and the rotating support are circumferentially limitedly connected, and the circumferential angle of the rotary mirror bracket is changed by the rotation of the rotating support.

[0009] In one embodiment, preferably, the adjustment mechanism includes an adjustment table. The negative pressure adsorption tooling is fixedly connected to the adjustment table. The adjustment table has a first adjustment stroke of rotating around a vertical / horizontal axis for adjusting the angle of the mirror adsorbed on the adsorption end, and the adjustment table also has a second adjustment stroke for driving the negative pressure adsorption tooling to approach or move away from the positioning seat relatively.

[0010] In one embodiment, preferably, the adjustment table is arranged below the negative pressure adsorption tooling. The bracket tooling includes a base fixedly arranged, and a cantilever extending towards the negative pressure adsorption tooling is fixedly connected to the base. The cantilever is arranged above the adjustment table, and the positioning seat is arranged at the free end of the cantilever.

[0011] Based on the above-mentioned rotary mirror assembly tooling, the present invention also proposes a rotary mirror assembly device, including a laser emitter, an observation screen, an industrial camera and the above-mentioned rotary mirror assembly tooling; the laser emitter is used to emit cross laser from the back side of the adsorption end towards the mirror adsorbed on the adsorption end; the observation screen is arranged on the optical path after the cross laser is reflected by the mirror for showing the light spot; the industrial camera is used to observe and record the light spot positions corresponding to the three mirrors on the observation screen respectively.

[0012] The present invention also proposes a rotary mirror assembly method for respectively assembling a plurality of mirrors onto a plurality of mirror fixing surfaces of a rotary mirror bracket, including the following steps:

[0013] S10. Provide a bracket tooling and a negative pressure adsorption tooling. Position and install the rotating mirror bracket on the positioning seat provided by the bracket tooling. Use the negative pressure adsorption tooling to fix the first reflecting mirror through negative pressure adsorption. Fix one of the reflecting mirror fixing surfaces of the rotating mirror bracket and the adsorbed and fixed reflecting mirror in a fixed connection. Use a laser emitter to emit laser light to the adsorbed and fixed reflecting mirror, and observe and record the position of the reflected light spot of the first reflecting mirror on a fixed observation screen as a reference point.

[0014] S20. Release the adsorption and fixation of the previous reflecting mirror by the negative pressure adsorption tooling, separate the negative pressure adsorption tooling and the rotating mirror bracket, and then use the negative pressure adsorption tooling to fix the next unfixed reflecting mirror through negative pressure adsorption. Press one of the empty reflecting mirror fixing surfaces on the rotating mirror bracket against the adsorbed and fixed reflecting mirror, and adjust the position and attitude of the negative pressure adsorption tooling so that the light spot generated on the observation screen after the adsorbed and fixed reflecting mirror reflects the laser light is consistent with the position of the reference point, and fix the adsorbed and fixed reflecting mirror and the reflecting mirror fixing surface pressed against it in a fixed connection.

[0015] Repeat step S20 until a reflecting mirror is fixed on each reflecting mirror fixing surface of the rotating mirror bracket.

[0016] In one embodiment, preferably, in steps 10 and 20, the steps of fixedly connecting the reflecting mirror fixing surface of the rotating mirror bracket and the adsorbed and fixed reflecting mirror include: moving the negative pressure adsorption tooling and / or the positioning seat to make the reflecting mirror fixing surface press against the adsorbed reflecting mirror; in step 20, after releasing the adsorption and fixation of the previous reflecting mirror by the negative pressure adsorption tooling, move the negative pressure adsorption tooling and / or the positioning seat to separate the negative pressure adsorption tooling and the rotating mirror bracket.

[0017] In one embodiment, preferably, the rotating mirror bracket is installed on the positioning seat in a circumferentially angle-convertible manner. In step S20, the step of pressing one of the empty reflecting mirror fixing surfaces on the rotating mirror bracket against the adsorbed and fixed reflecting mirror includes: converting the circumferential angle of the rotating mirror bracket so that one of the empty reflecting mirror fixing surfaces on the rotating mirror bracket faces the negative pressure adsorption tooling.

[0018] The present invention has the following beneficial effects: The present invention uses a negative pressure adsorption tooling to adsorb and fix the reflecting mirror and adjusts the position and attitude of the reflecting mirror by adjusting the position and attitude of the negative pressure adsorption tooling, avoiding quality defects such as collision and scratching of the reflecting mirror. Particularly importantly, once the position and angle of the reflecting mirror are determined, the reflecting mirror can remain stationary under the adsorption action of the negative pressure adsorption tooling. After the reflecting mirror is fixed on the rotating mirror bracket, the position consistency of each reflecting mirror is very high. Moreover, the rotating mirror assembly device of this embodiment is simple to operate and has high manufacturing efficiency. Description of the Drawings

[0019] Figure 1It is a schematic diagram of the assembly of the rotating mirror in Embodiment 1;

[0020] Figure 2 It is a schematic diagram of one of the reflecting mirrors of the rotating mirror separated from the rotating mirror bracket in Embodiment 1;

[0021] Figure 3 It is an overall view of the rotating mirror assembly device in Embodiment 1;

[0022] Figure 4 It is a schematic diagram of the substrate, laser emitter and rotating mirror assembly tooling of the rotating mirror assembly device in Embodiment 1;

[0023] Figure 5 It is an exploded view of the structure of the rotating mirror assembly tooling in Embodiment 1 (angle one);

[0024] Figure 6 It is an exploded view of the structure of the rotating mirror assembly tooling in Embodiment 1 (angle two);

[0025] Figure 7 It is a schematic diagram of the bracket tooling and the rotating mirror bracket in Embodiment 1;

[0026] Figure 8 It is an exploded view of the structure of the negative pressure adsorption tooling in Embodiment 1. Detailed implementation manners

[0027] To further illustrate each embodiment, the present invention provides accompanying drawings. These accompanying drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] Now, the present invention will be further described in conjunction with the accompanying drawings and specific implementation manners.

[0029] Embodiment 1:

[0030] As a preferred embodiment of the present invention, a rotating mirror assembly device is provided for assembling a rotating mirror. The structure of the rotating mirror is as Figure 1 shown, including a rotating mirror bracket 40 and a reflecting mirror 50. The rotating mirror bracket 40 is provided with a plurality of reflecting mirror fixing surfaces 41. The plurality of reflecting mirror fixing surfaces 41 are uniformly arranged around the axis Y of the rotating mirror bracket 40 on the outer periphery of the rotating mirror bracket 40. That is, in the axial projection of the rotating mirror bracket 40, the plurality of reflecting mirror fixing surfaces 41 can be sequentially connected to form a regular polygon. One reflecting mirror 50 is fixed on each reflecting mirror fixing surface 41. The rotating mirror assembly device in this embodiment is used to accurately fix each reflecting mirror 50 on the reflecting mirror fixing surface 41 to ensure that the reflection postures of several reflecting mirrors 50 are consistent.

[0031] As shown in Figure 3-8 , the rotating mirror assembly device specifically includes a laser emitter 10, a rotating mirror assembly tooling 20, and an observation screen 30. The rotating mirror assembly tooling 20 further includes a support tooling 1, a negative pressure adsorption tooling 2, and an adjustment mechanism 3. The support tooling 1 is used to position and install a rotating mirror support 40. As shown in Figure 7 , a rotating support 11 is provided on the support tooling 1. The rotating mirror support 40 and the rotating support 11 are cooperatively connected, and the circumferential angle of the rotating mirror support 40 is converted by the rotation of the rotating support 11. The rotating support 11 can be implemented by using existing technologies, such as bearings and rollers. The rotating mirror support 40 is sleeved outside the rotating support 11 and is circumferentially limitedly connected to the rotating support 11.

[0032] The negative pressure adsorption tooling 2 is as shown in Figure 4 and 6 and Figure 8. The negative pressure adsorption tooling 2 is arranged between the support tooling 1 and the laser emitter 10 and includes an adsorption seat 21 and a light-transmitting sheet 22. A through hole 23 is provided on the adsorption seat 21. The through hole 23 includes a first hole end 231 and a second hole end 232. Among them, the first hole end 231 is relatively close to the laser emitter 10, and the second hole end 23 is relatively close to the support tooling 1. The light-transmitting sheet 23 is fixedly sealed on the first hole end 231 of the through hole 22. A negative pressure interface 24 is communicated with the through hole 23, and a negative pressure generator is externally connected to the negative pressure interface 24. When the negative pressure generator works, the through hole 23 becomes a negative pressure chamber through the negative pressure interface 24. Since the light-transmitting sheet 23 is fixedly sealed on the first hole end 231, the second hole end 232 becomes the adsorption end of the adsorption seat 21 for adsorbing the reflecting mirror 50 to be assembled. The light-transmitting sheet 22 is made of a light-transmitting material such as glass, so that the laser emitted by the laser emitter 10 can be emitted to the reflecting mirror 50 adsorbed at the second hole end 232 through the light-transmitting sheet 22 and the through hole 23. In other embodiments, the entire adsorption seat 21 can be made of a light-transmitting material, and the light-transmitting sheet 22 is replaced by a light-transmitting closed wall surface integrally formed at one end of the negative pressure chamber. As long as a light-transmitting part is provided at one end of the negative pressure chamber relatively close to the laser emitter 10 and can allow the laser to pass through.

[0033] The adjustment mechanism 3 includes an adjustment table 31, and the lower end of the adsorption seat 21 is fixedly connected to the adjustment table 31. The adjustment table 31 has a first adjustment stroke of rotating around the vertical axis, thereby adjusting the angle of the reflector 50 adsorbed on the adsorption seat 21. The adjustment mechanism 3 can be configured with adjustment modes of coarse adjustment and fine adjustment, and the adjustment mechanism 3 is configured with a driving handle to provide a force application operation end to control the movement of the position adjustment table 31. The adjustment stroke of the adjustment table 31 can be realized by the driving handle cooperating with a transmission mechanism, such as a gear transmission mechanism or a rack and pinion transmission mechanism. In other embodiments, the adjustment table 31 can have an adjustment stroke of rotating around the horizontal axis, or the adjustment table 31 can have both an adjustment stroke of rotating around the horizontal axis and an adjustment stroke of rotating around the vertical axis to improve the flexibility of the angle adjustment of the reflector 50. Such an adjustment mechanism 3 with multiple degrees of freedom can be realized by the prior art, and the details thereof will not be elaborated in this example.

[0034] In this embodiment, the adjustment table 31 further has a second adjustment stroke of moving, enabling the adsorption seat 21 to move relatively closer to or farther away from the rotary support 11.

[0035] As Figure 7 shown, in this embodiment, the bracket tooling 1 includes a base 12, a cantilever 13, and a rotary support 11. The base 12 is fixedly arranged. For example, in this embodiment, the base 12 is fixedly connected to the substrate 100. The cantilever 13 is fixedly connected to the base 12. The cantilever 13 extends towards the negative pressure adsorption tooling 2. The rotary support 11 is installed at the free end of the cantilever 13. The adjustment table 31 is arranged below the negative pressure adsorption tooling 2, and the cantilever 13 is arranged above the adjustment table 31. Such a mechanism can make the layout of the bracket tooling 1, the negative pressure adsorption tooling 2, and the adjustment mechanism 3 more compact.

[0036] The assembly process of the rotating mirror in this embodiment is as follows:

[0037] First, install the rotating mirror bracket 40 on the rotary support 11. Take the first reflector 50 and adsorb and fix the reflector 50 at the adsorption end of the negative pressure adsorption tooling 2. Drive the adsorption seat 21 to move closer to the rotary support 11 through the adjustment table 31, so that one of the reflector fixing surfaces 41 of the rotating mirror bracket 40 abuts against the adsorbed reflector 50, and then fixedly connect the reflector fixing surface 41 and the adsorbed reflector 50. In this embodiment, the reflector fixing surface 41 and the reflector 50 are fixedly bonded with UV glue. Then, turn on the laser emitter 10 and emit laser from the back side of the adsorption end of the adsorption seat 21 to the adsorbed and fixed reflector 50. Since the light-transmitting sheet 22 is provided in this embodiment, the laser can penetrate into the light-transmitting sheet 22 and shine on the reflector 50, and the inner cavity space formed by the through hole 23 can allow the laser to be reflected therein. After being reflected by the reflector 50, the laser passes through the light-transmitting sheet 22 again and is projected on the observation screen 30 to generate a light spot. Take the position where the light spot is located as the reference point.

[0038] Release the adsorption of the negative pressure adsorption tooling 2 on the reflector 50 thereon (turn off the negative pressure generator), drive the adsorption seat 21 to move away from the rotary support 11 through the adjustment table 31, and then use the negative pressure adsorption tooling 2 to adsorb and fix the next unfixed reflector 50. Since the adsorption seat 21 and the rotary support 11 are separated, a space for the rotary mirror support 40 to convert the circumferential angle is generated therebetween. Then, convert the circumferential angle of the rotary mirror support 40 so that one of the empty reflector fixing surfaces 41 on the rotary mirror support 40 faces the negative pressure adsorption tooling 2 (the empty reflector fixing surface 41 is the reflector fixing surface 41 without the reflector 50 installed). Drive the adsorption seat 21 to move closer to the rotary support 11 through the adjustment table 31, so that the empty reflector fixing surface 41 is attached to the adsorbed reflector 50. Adjust the position and attitude of the negative pressure adsorption tooling 2 through the adjustment table 31 so that the position of the spot generated on the observation screen 30 after the adsorbed and fixed reflector 50 reflects the laser is consistent with the position of the reference point, and fixedly connect the adsorbed and fixed reflector 50 and the reflector fixing surface 41 attached to it. Repeat this process until a reflector 50 is fixed on each reflector fixing surface 41.

[0039] In this embodiment, the negative pressure adsorption tooling 2 is used to adsorb and fix the reflector 50, and the position and attitude of the reflector 50 are adjusted by adjusting the position and attitude of the negative pressure adsorption tooling 2, avoiding quality defects such as collision and scratching of the reflector 50. Particularly importantly, once the position and angle of the reflector 50 are determined, the reflector 50 can remain stationary under the adsorption action of the negative pressure adsorption tooling 2. After the reflector 50 is fixed on the rotary mirror support 40, the position consistency of each reflector 50 is very high. And the rotary mirror assembly device of this embodiment is simple to operate and has high manufacturing efficiency.

[0040] In this embodiment, the adjustment table 31 has a moving second adjustment stroke, so that the adsorption seat 21 can move relatively closer to or away from the rotary support 11. In other embodiments, the cantilever 13 can also be set to be slidable (the sliding stroke can be locked). In short, as long as at least one of the rotary support 11 and the adsorption seat 21 is set to be movable, so that the rotary support 11 and the adsorption seat 21 can move relatively closer to or away from each other. However, integrating this moving function on the adjustment table 31 in this embodiment can make the structure more compact and also facilitate operation.

[0041] In other embodiments, the rotary support 11 can also be replaced with a fixed support. By positioning the rotating mirror support 40 on the fixed support at different circumferential angles, the circumferential angle of the rotating mirror support 40 can be converted. For example, for the rotating mirror support 40 with three reflecting mirror fixing surfaces 41 corresponding to this embodiment, the fixed support can be in the form of a triangular prism. The rotating mirror support 40 is inserted over the triangular prism. Manually lift the rotating mirror support 40, rotate the rotating mirror support 40 by 60° around the axis, and then manually insert it back into the triangular prism to achieve the conversion of the circumferential angle of the rotating mirror support 40. However, since the rotary support 11 is provided in this embodiment, the rotating mirror support 40 can rotate freely, which is easier to operate. And when the adsorbed reflecting mirror 50 approaches the rotating mirror support 40, it can automatically guide one of the reflecting mirror fixing surfaces 41 to be in contact with it, which can also improve the position stability between the reflecting mirror fixing surface 41 and the reflecting mirror 50.

[0042] The support structure on the fixture tool 1 is not necessary. For example, in other embodiments, a bearing platform can be provided only on the side of the negative pressure adsorption fixture 2 facing away from the laser emitter 10 to bear the rotating mirror support 40. Since the reflecting mirror 50 is adsorbed and fixed by the negative pressure adsorption fixture 2 in this embodiment, when the negative pressure adsorption fixture 2 is fixed, the reflecting mirror 50 provides a constant and immovable positioning plane. As long as the rotating mirror support 40 is manually aligned and pressed against the reflecting mirror 50 adsorbed and fixed by the negative pressure adsorption fixture 2, the assembly of the rotating mirror can also be achieved. In this solution, mating parts that can be inserted into each other can be provided on the rotating mirror support 40 and the negative pressure adsorption fixture 2 respectively, so as to align the rotating mirror support 40. On this basis, a simpler solution is to omit the bearing platform and directly hold the rotating mirror support 40 by hand and align it and press it against the reflecting mirror 50 adsorbed and fixed by the negative pressure adsorption fixture 2. However, the fixture tool 1 and the support structure thereon provided in this embodiment can ensure that the rotating mirror support 40 has high position reliability.

[0043] In other embodiments, the adsorption end of the negative pressure adsorption fixture 2 can be provided with positioning grooves / blocks for positioning the reflecting mirror 50 to improve the position consistency of each reflecting mirror 50 adsorbed and fixed at the adsorption end.

[0044] If the observation screen 30 is far from the negative pressure adsorption fixture 2, an industrial camera can also be fixedly provided on the substrate 100 to observe and record the spot image on the observation screen 30.

[0045] The laser emitter 10 is preferably a cross laser emitter, which can generate a cross-shaped light spot and is more conducive to the position calibration of the reflecting mirror 50.

[0046] In this embodiment, there are three mirror fixing surfaces 41 on the rotating mirror bracket 40. That is, this embodiment is described with a rotating mirror equipped with three mirrors. However, the rotating mirror assembly tooling and device provided in this embodiment can also be used for rotating mirrors with different numbers of mirrors in other embodiments, such as a rotating mirror with four mirrors.

[0047] Embodiment 2:

[0048] Based on the basic principle of the rotating mirror assembly device in Embodiment 1, this embodiment provides a rotating mirror assembly method for respectively assembling multiple mirrors onto multiple mirror fixing surfaces on the rotating mirror bracket, including the following steps:

[0049] S10. Provide a bracket tooling and a negative pressure adsorption tooling. Position and install the rotating mirror bracket on the positioning seat provided by the bracket tooling. Use the negative pressure adsorption tooling to fix the first mirror by negative pressure adsorption. Fix the connection between one of the mirror fixing surfaces of the rotating mirror bracket and the adsorbed and fixed mirror. Use a laser emitter to emit laser light at the adsorbed and fixed mirror, and observe and record the position of the reflected light spot of the first mirror on a fixed observation screen as a reference point.

[0050] S20. Release the adsorption and fixation of the previous mirror by the negative pressure adsorption tooling, separate the negative pressure adsorption tooling and the rotating mirror bracket, and then use the negative pressure adsorption tooling to fix the next yet-to-be-installed mirror by negative pressure adsorption. Press one of the empty mirror fixing surfaces on the rotating mirror bracket against the adsorbed and fixed mirror, and adjust the position and attitude of the negative pressure adsorption tooling so that the light spot generated on the observation screen after the adsorbed and fixed mirror reflects the laser light is consistent with the position of the reference point. Fix the connection between the adsorbed and fixed mirror and the mirror fixing surface pressed against it.

[0051] Repeat step S20 until each mirror fixing surface of the rotating mirror bracket is fixed with a mirror.

[0052] In the above step of fixedly connecting any mirror fixing surface and the mirror, this embodiment uses bonding to achieve the fixed connection. Bonding not only has a fast fixing speed but also does not cause displacement of the mirror fixing surface and the mirror.

[0053] Before the above step S10, the rotating mirror assembly method of this embodiment further includes an additional step S05: Provide a bracket tooling, and position and install the rotating mirror bracket on the positioning seat provided by the bracket tooling. Such a setting can improve the position stability of the rotating mirror bracket.

[0054] In steps 10 and 20, the steps of fixedly connecting the mirror fixing surface of the rotating mirror bracket and the mirror to be adsorbed and fixed include: moving the negative pressure adsorption tooling and / or the positioning seat to make the mirror fixing surface close to the mirror to be adsorbed; in step 20, after releasing the adsorption and fixation of the negative pressure adsorption tooling on the previous mirror, move the negative pressure adsorption tooling and / or the positioning seat to separate the negative pressure adsorption tooling from the rotating mirror bracket.

[0055] In this embodiment, the rotating mirror bracket is rotatably mounted on the positioning seat. In the above step S20, the step of making one of the empty mirror fixing surfaces on the rotating mirror bracket close to the mirror to be adsorbed and fixed specifically includes: rotating the circumferential angle of the rotating mirror bracket to make one of the empty mirror fixing surfaces on the rotating mirror bracket face the negative pressure adsorption tooling, and moving the negative pressure adsorption tooling and / or the positioning seat to make the empty mirror fixing surface close to the mirror to be adsorbed.

[0056] In this embodiment, the negative pressure adsorption tooling includes a negative pressure chamber. One end of the negative pressure chamber is provided with a light-transmitting part. The other end of the negative pressure chamber opposite to and away from the light-transmitting part is the adsorption end for adsorbing the mirror. The laser emitted by the laser emitter penetrates the light-transmitting part and shoots at the mirror adsorbed at the adsorption end, and after being reflected by the mirror, it passes through the light-transmitting part and shoots at the observation screen.

[0057] In this embodiment, the negative pressure adsorption tooling is used to adsorb and fix the mirror, and the position and attitude of the mirror are adjusted by adjusting the position and attitude of the negative pressure adsorption tooling, avoiding quality defects such as collision and scratching of the mirror. Particularly importantly, once the position and angle of the mirror are determined, the mirror can remain stationary under the adsorption action of the negative pressure adsorption tooling. After the mirror is fixed on the rotating mirror bracket, the position consistency of each mirror is very high. And the rotating mirror assembly device of this embodiment is simple to operate and has high manufacturing efficiency.

[0058] Although the present invention is specifically shown and described in combination with the preferred embodiments, those skilled in the art should understand that various changes made to the present invention in form and details without departing from the spirit and scope of the present invention defined by the appended claims all fall within the protection scope of the present invention.

Claims

1. A rotating mirror assembly tool, used for assembling a rotating mirror, the rotating mirror comprising a rotating mirror bracket and a plurality of reflectors, the rotating mirror bracket being fixed with a plurality of reflector fixing surfaces, characterized in that: include: Negative pressure adsorption fixture, bracket fixture and adjustment mechanism, A negative pressure adsorption tool, wherein the negative pressure adsorption tool comprises an adsorption end for fixing the reflector by negative pressure adsorption, A support fixture is provided with a positioning seat for positioning the rotating mirror bracket, and the cooperation between the positioning seat and the rotating mirror bracket can allow the rotating mirror bracket to change its circumferential angle, so that any one of the reflector fixing surfaces can be converted to a position facing the adsorption end. The adjusting mechanism is used to adjust the position and posture of the adsorption end, and further adjust the position and posture of the reflector adsorbed on the adsorption end.

2. The rotating mirror assembly tool according to claim 1, characterized in that: At least one of the positioning seat and the adsorption end is configured to be movable, so that the positioning seat and the adsorption end can be relatively close to each other so that one of the mirror fixing surfaces of the rotating mirror bracket on the positioning seat is attached to the reflector on the adsorption end, or the positioning seat and the adsorption end can be relatively far away from each other to create a space between the two for the rotating mirror bracket to change the circumferential angle.

3. The rotating mirror assembly tool according to claim 1, characterized in that: The negative pressure adsorption tooling comprises a negative pressure chamber, one end of the negative pressure chamber relatively close to the support tooling is the adsorption end, and the other end of the negative pressure chamber relatively far from the adsorption end is provided with a light-transmitting portion.

4. The rotating mirror assembly tool according to claim 1, characterized in that: The positioning seat is a fixed support, and the circumferential angle of the rotating mirror support is converted by positioning the rotating mirror support on the fixed support at different circumferential angles; or, the positioning seat is a rotating support, and the rotating mirror support and the rotating support are connected in a circumferentially limited manner, and the circumferential angle of the rotating mirror support is converted by rotating the rotating support.

5. The rotating mirror assembly tool according to claim 1, characterized in that: The adjustment mechanism includes an adjustment platform, the negative pressure adsorption tooling is fixedly connected to the adjustment platform, the adjustment platform has a first adjustment stroke rotating around a vertical / horizontal axis for adjusting the angle of the reflector adsorbed on the adsorption end, and the adjustment platform also has a second adjustment stroke for driving the negative pressure adsorption tooling to be relatively close to or away from the positioning seat.

6. The rotating mirror assembly tool according to claim 5, characterized in that: The adjustment platform is arranged below the negative pressure adsorption tooling, and the support tooling includes a fixed base, to which a cantilever extending toward the negative pressure adsorption tooling is fixedly connected, the cantilever is arranged above the adjustment platform, and the positioning seat is arranged at the free end of the cantilever.

7. A rotating mirror assembly device, characterized in that: It comprises a laser emitter, an observation screen, an industrial camera and the rotating mirror assembly tool as described in any one of claims 1 to 6; the laser emitter is used to emit a cross laser toward the reflector adsorbed on the adsorption end; The observation screen is arranged on the optical path of the cross laser after being reflected by the reflector, and is used to show the light spot; the industrial camera is used to observe and record the positions of the light spots corresponding to the three reflectors on the observation screen.

8. A rotating mirror assembly method for assembling a plurality of reflectors respectively onto a plurality of reflector fixing surfaces on a rotating mirror bracket, characterized in that: The steps include: S10, providing a support fixture and a negative pressure adsorption fixture, positioning and installing the rotating mirror support on a positioning seat provided in the support fixture, using the negative pressure adsorption fixture to fix the first reflector by negative pressure adsorption, fixing one of the reflector fixing surfaces of the rotating mirror support and the adsorbed reflector, using a laser transmitter to emit a laser to the adsorbed reflector, observing and recording the reflected light spot position of the first reflector on a fixed observation screen as a reference point, S20, release the adsorption and fixation of the previous reflector by the negative pressure adsorption tooling, separate the negative pressure adsorption tooling and the rotating mirror bracket, and then use the negative pressure adsorption tooling to fix the next reflector that has not been installed by negative pressure adsorption, and stick one of the empty reflector fixing surfaces on the rotating mirror bracket to the reflector to be adsorbed and fixed, adjust the position and posture of the negative pressure adsorption tooling, so that the light spot generated on the observation screen after the reflector to be adsorbed and fixed reflects the laser is consistent with the position of the reference point, and fix the reflector to be adsorbed and fixed and the reflector fixing surface attached to it. S20 is repeatedly performed until a reflector is fixed on each reflector fixing surface of the rotating mirror bracket.

9. The rotating mirror assembly method according to claim 8, characterized in that: In step 10 and step 20, the step of fixing the reflector fixing surface of the rotating mirror bracket and the reflector to be adsorbed and fixed comprises: moving the negative pressure adsorption tooling and / or the positioning seat to make the reflector fixing surface stick to the adsorbed reflector; in step 20, after releasing the adsorption and fixation of the previous reflector by the negative pressure adsorption tooling, moving the negative pressure adsorption tooling and / or the positioning seat to separate the negative pressure adsorption tooling and the rotating mirror bracket.

10. The rotating mirror assembly method according to claim 8, characterized in that: The rotating mirror bracket can be installed on the positioning seat with a convertible circumferential angle. In step S20, the step of attaching one of the empty mirror fixing surfaces on the rotating mirror bracket to the adsorbed and fixed reflector includes: converting the circumferential angle of the rotating mirror bracket so that one of the empty mirror fixing surfaces on the rotating mirror bracket faces the negative pressure adsorption tooling.

Images