CN116455165A - Laser radar motor, laser radar and process - Google Patents
Laser radar motor, laser radar and process Download PDFInfo
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- CN116455165A CN116455165A CN202310423715.7A CN202310423715A CN116455165A CN 116455165 A CN116455165 A CN 116455165A CN 202310423715 A CN202310423715 A CN 202310423715A CN 116455165 A CN116455165 A CN 116455165A
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- Prior art keywords
- motor
- duplication
- laser
- lidar
- outer end
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/16—Centering rotors within the stator; Balancing rotors
- H02K15/165—Balancing the rotor
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
- G02B7/1821—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors for rotating or oscillating mirrors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a laser radar motor, which comprises a rotor assembly, a stator assembly and an optical reflector, wherein the rotor assembly comprises a motor shell and a fastening ring which are fixed together, and the optical reflector is fixed on the peripheries of the motor shell and the fastening ring, wherein the motor shell and the fastening ring are fixed through laser welding, a first welding part is arranged on the periphery of an inner cylinder of the motor shell, and a first air groove extending along the axis direction of the motor shell is formed between the first welding part and the inner cylinder of the motor shell. The air tank can insulate heat by using air, so that the deformation of the inner cylinder of the motor shell caused by laser welding is prevented, and meanwhile, the weight can be properly reduced.
Description
The application is a divisional application of Chinese invention patent application based on the application date of 2021, 11-month and 24-day, the application number of 2021114004648 and the invention name of 'dynamic balance de-duplication technology and structure for laser radar prism motor'.
Technical Field
The invention relates to the technical field of laser radars, in particular to a laser radar motor, a laser radar and a process for the laser radar motor.
Background
With the rapid development of unmanned technology, vehicle-mounted lidar is receiving more and more attention, and the application of the vehicle-mounted lidar has a trend of explosive growth. In vehicle-mounted lidar, the stability of the rotating optical mirror is very important, which directly relates to the laser imaging effect, thereby affecting the reliability of unmanned operation.
Currently, the rotation of an optical mirror of an on-board laser radar is usually driven by a motor, i.e. the optical mirror is part of an outer rotor of the motor. As is known, in order to reduce motor vibration noise and ensure motor product reliability, it is necessary to perform dynamic balance processing on the motor rotor.
At present, conventional dynamic balance has two modes of weight increase and weight removal, the weight increase is limited by weight increasing materials and weight increasing processes, and the product reliability can not meet the requirements of a laser radar motor. However, the conventional lidar motor adopts a mechanical de-duplication mode, and the following three problems are caused due to the need of drilling/milling during de-duplication:
1) The product is stressed greatly and is easy to deform or damage; 2) Scrap iron splashes, damages or pollutes products can be generated in the process of removing the weight; 3) The precision is lower, can't satisfy this product low noise requirement.
Because the vehicle-mounted laser radar is compact in structure, and the weight of the optical reflectors is limited by weight removal, the product laser radar motor is difficult to meet the product requirement by one-time weight removal. In addition, the fixed position can not be used as an effective position for removing weight due to the fixed mode of tightening the existing bolts of the motor shell and the tightening ring, so that the weight removal is insufficient, and the requirement of low unbalance amount is difficult to meet.
Disclosure of Invention
Aiming at the technical problems, the invention aims at: the utility model provides a laser radar motor and be used for dynamic balance of laser radar prism motor to remove heavy technology and structure, solved the problem that conventional laser radar scanning prism motor adopted the mechanical mode of removing to cause.
An object of the present invention is to provide a lidar motor, including a rotor assembly, a stator assembly and an optical reflector, wherein the rotor assembly includes a motor housing and a fastening ring which are fixed together, and the optical reflector is fixed on the outer circumferences of the motor housing and the fastening ring, wherein the motor housing and the fastening ring are fixed by laser welding, a first welding part is arranged on the outer circumference of an inner cylinder of the motor housing, and a first air groove extending along the axial direction of the motor housing is formed between the first welding part and the inner cylinder of the motor housing. The air tank can insulate heat by using air, so that the deformation of the inner cylinder of the motor shell caused by laser welding is prevented, and meanwhile, the weight can be properly reduced. It is yet another object of the present invention to provide a dynamic balancing deduplication structure for a lidar prism motor, the motor comprising a rotor assembly and an optical mirror, the rotor assembly comprising a motor housing and a tightening ring secured together, the optical mirror being secured to the outer peripheries of the motor housing and the tightening ring;
the dynamic balance weight removing structure comprises a motor shell weight removing structure, a tightening ring weight removing structure and an optical reflector weight removing structure, wherein the motor shell weight removing structure is formed by laser material removing and weight removing of two axial end faces of the motor shell, the tightening ring weight removing structure is formed by laser material removing and weight removing of outer end faces of the tightening ring weight removing structure, and the optical reflector weight removing structure is formed by laser material removing and weight removing of non-optical mirrors of two end faces of the optical reflector weight removing structure.
Optionally, the motor shell and the fastening ring are fixed by laser welding.
Optionally, the outer periphery of the inner cylinder of the motor housing is provided with a first welding part, the inner periphery of the fastening ring is provided with a second welding part, and the motor housing and the fastening ring are welded and fixed through the first welding part and the second welding part.
Optionally, the welding positions of the first welding part and the second welding part are respectively formed with chamfers.
Optionally, a cooling air groove extending along the axial direction of the motor housing is formed between the first welding portion and the inner cylinder of the motor housing.
Optionally, the axial length of the first weld is less than the inner cylinder of the motor housing;
the motor shell weight-removing structure is obtained by carrying out laser material removal and weight removal on the axial outer end face of the first welding part and the axial outer end face of the other end of the motor shell.
Optionally, the fastening ring includes the second welding portion and a body portion disposed outside the second welding portion, where the body portion is formed by a body with an axially outer end surface lower than an axially outer end surface of an inner cylinder of the motor housing and an extension portion formed by extending an outer end of the body outward, and the axially outer end surface of the extension portion and the axially outer end surface of the inner cylinder of the motor housing are in the same plane;
the tightening ring weight removing structure is obtained by carrying out laser material removing and weight removing on the axial outer end face of the second welding part and the axial outer end face of the body.
Another object of the present invention is to provide a dynamic balance de-duplication process for a lidar prism motor, comprising the steps of:
primary de-duplication: completing the assembly of a rotor assembly, and performing laser material removal and weight removal on the axially outer end face of the fastening ring and the axially two end faces of the motor shell by using a laser;
secondary de-duplication: the rotor assembly and the stator assembly which are subjected to one-time de-duplication are assembled, and laser de-duplication is carried out on the two axial end faces of the optical reflector by using a laser, so that the whole motor is balanced;
wherein the weight of the primary de-duplication is greater than the weight of the secondary de-duplication.
Optionally, the laser intensity of the primary deduplication is greater than the laser intensity of the secondary deduplication, and the accuracy of the secondary deduplication is higher than that of the primary deduplication.
Optionally, in the secondary de-duplication step, after the rotor assembly assembling step is completed, before the laser is used to perform laser de-duplication on the axial outer end face of the fastening ring and the axial two end faces of the motor housing, the method further includes a step of mounting the rotor assembly on a dynamic balancing machine to measure the unbalance amount of the rotor assembly, and
in the secondary weight removing step, after laser material removal and weight removal are carried out on two axial end faces of the optical reflector by using a laser, the whole motor is arranged on a dynamic balancing machine to measure the unbalance amount of the motor.
Compared with the prior art, the invention has the advantages that:
according to the de-duplication process for the dynamic balance de-duplication structure of the vehicle-mounted laser radar motor, the motor shell, the fastening ring and the optical reflector are subjected to laser de-duplication respectively by adopting the secondary de-duplication process, so that the production feasibility is improved, and the whole motor rotor assembly achieves dynamic balance. The laser material removal and duplication removal are adopted, no mechanical force is applied to the product, the metal and the optical mirror surface cannot be deformed and damaged, the duplication removal directly acts on the metal and the non-optical mirror surface, and the pollution to the optical mirror surface cannot be generated.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic diagram of a dynamic balance weight-removing structure for a vehicle-mounted lidar motor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a motor assembly for achieving dynamic balance after de-duplication.
Wherein: 1. a motor housing; 10. a motor shell weight removing structure; 11. a first welded portion; 2. a tightening ring; 20. tightening the ring de-duplication structure; 21. a body portion; 211. a body; 212. an extension; 22. a second welded portion; 3. an optical mirror; 30. an optical mirror de-duplication structure; 4. a rubber plain washer; 5. an air tank; 6. a magnetic ring; 7. a shaft; 8. a bottom plate; 9. a wound stator; 12. a bearing; 13. a bearing retainer ring; 14. a protective ring; 15. a wave washer; 16. a wave pad compression ring; 17. and (5) a bolt.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
Examples:
referring to fig. 1 to 2, the dynamic balancing deduplication structure for a vehicle-mounted lidar motor according to an embodiment of the present invention, wherein the motor includes a rotor assembly, a stator assembly and an optical mirror 3. The rotor assembly comprises a motor housing 1 and a tightening ring 2 fixed together. The optical mirror 3 is fixed to the outer circumferences of the motor case 1 and the fastening ring 2. The dynamic balance weight removing structure comprises a motor shell weight removing structure 10, a fastening ring weight removing structure 20 and an optical reflector weight removing structure 30, wherein the motor shell weight removing structure 10 is formed by performing laser material removing and weight removing on two axial end faces of the motor shell 1, the fastening ring weight removing structure 20 is formed by performing laser material removing and weight removing on the outer end faces of the fastening ring weight removing structure 20, and the optical reflector weight removing structure 30 is formed by performing laser material removing and weight removing on the two end faces, namely the non-optical mirror faces.
The laser material removing and duplication removing mode is adopted for processing the vehicle-mounted laser radar motor, and the aim of duplication removing is achieved by utilizing the laser ablation of materials on the axial end surfaces of the tightening ring, the motor shell and the optical reflector, namely, the material removing. The laser material and weight removal has no mechanical force on the product, and the metal structure and the surface of the optical reflector 3 cannot be deformed and damaged. And the metal structure and the non-optical mirror surface of the optical mirror 3 are directly ablated during laser material removal and duplication removal, so that the mirror surface with high requirements on cleanliness cannot be polluted. The reliability is high.
For convenience of description, an upper end surface of the inner cylinder of the motor housing 1, an upper end surface of the first welding portion 11, an upper end surface of the second welding portion 22, an upper end surface of the body 211, an upper end surface of the extension 212, and an upper end surface of the optical mirror 3 as shown in fig. 1 and 2 are described as a-plane, and correspondingly, a lower end surface of the motor housing 1 and a lower end surface of the optical mirror 3 are described as B-plane.
According to some embodiments of the invention, the motor housing 1 and the fastening ring 2 are fixed by laser welding. The problem that the fixed position can not be used as an effective position for removing weight when the existing bolt is screwed in a fixed mode is solved, the weight is removed, the requirement of low unbalance is difficult to meet, and the problem that the pretightening force of the rubber flat washer 4 can not be detected when the fixed mode of interference pressing in is adopted is solved.
According to some embodiments of the present invention, the outer circumference of the inner cylinder of the motor housing 1 is provided with a first welding portion 11, and the inner circumference of the fastening ring 2 is provided with a second welding portion 22, and the motor housing 1 and the fastening ring 2 are welded and fixed by the first welding portion 11 and the second welding portion 22. In this embodiment, the first welding portion 11 and the second welding portion 22 are both cylindrical, and are sleeved with each other, the outer peripheral wall of the first welding portion 11 is abutted against the inner peripheral wall of the second welding portion 22, and in order to facilitate welding, chamfers are provided at the welding position of the first welding portion 11 and the welding position of the second welding portion 22. Specifically, the upper end periphery of the first welding part 11 is provided with a chamfer, the upper end inner periphery of the second welding part 22 is provided with a matched chamfer, and the two chamfers form a V-shaped welding part.
In order to prevent the inner cylinder of the motor housing 1 from being deformed during laser welding to cause product failure, according to a preferred embodiment of the present invention, an air groove 5 extending in the axial direction of the motor housing 1 is opened between the inner cylinder of the motor housing 1 and the first welding portion 11, one end of the air groove 5 penetrating the outer end surface of the first welding portion 11, but the other end of the air groove 5 does not penetrate the inner end surface of the first welding portion 11. The air groove 5 is arranged, so that air can be used for heat insulation, the deformation of the inner cylinder of the motor shell 1 caused by laser welding is prevented, and meanwhile, the weight can be properly reduced. According to some alternative embodiments of the invention, the axial length of the first weld 11 is smaller than the axial length of the inner cylinder of the motor housing 1. Specifically, the axially outer end face of the first welded portion 11, that is, the a-face of the first welded portion 11 is lower than the axially outer end face of the inner cylinder of the motor housing 1, that is, the a-face of the inner cylinder of the motor housing 1. The entire outer shape of the fastening ring 2 is umbrella-shaped. Specifically, the fastening ring 2 includes a second welding portion 22 and a body portion 21 disposed outside the second welding portion 22, the body portion 21 includes a body 211 having an arc bottom surface connected to the second welding portion 22 and an extension portion 212 extending outward from an outer end of the body 211, and an outer side surface of the extension portion 212 is also arc. The axially outer end face of the body 211, i.e. the a-face of the body 211, is also lower than the axially outer end face of the inner cylinder of the motor housing 1, i.e. the face of the inner cylinder of the motor housing 1, in this embodiment the axially outer end face of the body 211, i.e. the a-face of the body 211, is slightly higher than the axially outer end face of the second weld 22, i.e. the a-face of the second weld 22, and the axially outer end face of the extension 212, i.e. the a-face of the extension 212, is in the same plane as the upper end face of the inner cylinder of the motor housing 1, i.e. the a-face of the inner cylinder of the motor housing 1. In order to prevent the deformation of the body 211 of the fastening ring 2 during welding from causing the realization of a product, air grooves 5 extending in the axial direction are also provided between the second welding portion 22 and the body 211, and in order to facilitate the distinguishing description, the air grooves 5 are described as second air grooves 5, the air grooves 5 on the motor housing 1 are described as first air grooves 5, the width of the second air grooves 5, that is, the radial dimension as shown in the figure, is greater than that of the first air grooves 5, the number of the second air grooves 5 can be multiple, and the second air grooves 5 can be arranged at intervals in the radial direction and can also play a role in weight reduction.
Specifically, as shown in fig. 2, the motor housing de-weighting structure 10 is obtained by performing laser de-weighting on an axially outer end face of the first welding portion 11, that is, an axially outer end face of the first welding portion 11A shown in fig. 2 and an axially outer end face of the other end of the motor housing 1, that is, a B face of the motor housing 1 shown in fig. 2. The fastening ring de-duplication structure 20 is obtained by performing laser de-duplication on an axially outer end surface of the second welding portion 22, that is, an a-surface of the second welding portion 22 shown in fig. 2, and an axially outer end surface of the main body 211, that is, an a-surface of the main body 211 shown in fig. 2.
The embodiment of the invention also provides a de-duplication process for processing the dynamic balance de-duplication structure for the vehicle-mounted laser radar motor, which comprises the following steps:
primary de-duplication: completing the assembly of a rotor assembly, and performing laser material removal and weight removal on the axially outer end face of the fastening ring 2 and the axially two end faces of the motor shell 1 by using a laser;
secondary de-duplication: the rotor assembly and the stator assembly which are subjected to one-time de-duplication are assembled, and laser de-duplication is carried out on the two axial end faces of the optical reflector 3 by using a laser, so that the whole motor is balanced;
wherein the weight of the primary de-duplication is greater than the weight of the secondary de-duplication. In the implementation, the laser adopts ultraviolet laser, the laser power is 15 watts, and the laser is an ultrafast pulse laser. One time de-duplication uses a nanosecond pulsed laser with pulse width <50ns. The secondary deduplication uses a picosecond pulsed laser with pulse width <50ps.1 ns=1000 ps. The smaller the pulse width is, the smaller the laser heat influence is, the smaller the corresponding temperature generated on the surface of the material is, and the less damage is caused to the material such as glass. In this embodiment, the primary de-duplication target is made of stainless steel, and the secondary de-duplication target is made of glass. The stainless steel is cut, ultraviolet picoseconds and ultraviolet nanoseconds can be cut, but the nanosecond pulse width is large, the single pulse energy is large, the thickness of the single etched metal is more under the same condition, no other influence exists, and the efficiency is higher. Etching glass, because of the material, if the heat is large, can lead to glass collapse, picosecond equipment has lower single pulse energy, so the glass is more suitable for picosecond processing. The primary weight removal speed is high, but the precision is low, which can be 100 times of the weight of the secondary weight removal.
Specifically, in the step of removing the weight once, the assembly of the rotor assembly comprises the steps of assembling the magnetic ring 6, the rubber flat gasket 4, the fastening ring 2 and the motor housing 1, and then fixing the fastening ring 2 and the motor housing 1 by adopting laser welding.
In the secondary de-duplication step, in the combined step, the stator assembly is assembled by the bottom plate 8, the shaft 7 and the stator winding.
Preferably, the laser de-lamination of the motor housing and the fastening ring and the optical mirror is performed in two steps in order to improve the production feasibility. In this embodiment, preferably, the laser power of the primary deduplication is greater than that of the secondary deduplication, and the method is not particularly limited in detail, for example, the laser power of the primary deduplication is one five times, two times, and so on of the laser power of the secondary deduplication, and the primary deduplication can effectively shorten the deduplication time by adopting the greater laser power, thereby improving the processing efficiency. While the secondary de-duplication uses low-intensity laser to protect the optical reflector and reduce processing cost, because the higher-intensity laser has higher power consumption. In this embodiment, the accuracy of the secondary deduplication is higher than that of the primary deduplication.
According to some embodiments of the present invention, after the assembling step of the rotor assembly is completed in the primary de-duplication step, before the laser ablation de-duplication is performed on the axially outer end face of the fastening ring 2 and the axially both end faces of the motor housing 1, the method further includes a step of mounting the rotor assembly on a dynamic balancer (not shown, which is a conventional dynamic balancer) to measure the unbalance thereof, and in the secondary de-duplication step, after the laser de-duplication is performed on the axially both end faces of the optical mirror 3 using the laser, the entire motor is mounted on the dynamic balancer to measure the unbalance thereof. If the unbalance is zero in this step, this indicates that the whole motor is balanced.
According to some embodiments of the present invention, in the secondary de-duplication step, after the rotor assembly of the primary de-duplication, specifically, the stator assembly assembled by the B-face of the rotor assembly, as shown in fig. 2, with the base plate 8, the shaft 7, and the winding stator 9, the step of laser ablation and de-duplication is performed on the two axial end faces of the optical reflector 3, that is, the a-face and the B-face, as shown in fig. 2, further includes the step of assembling the complete machine, specifically, the a-face, as shown in fig. 2, with the guard ring 14, the wave washer 15, the wave pad compression ring 16, and the bolt 17.
According to the de-duplication process provided by the embodiment of the invention, the production feasibility is improved through secondary laser de-duplication, the de-duplication is performed on the metal structure, namely the motor shell 1 and the fastening ring 2, the optical reflector 3 can meet the product requirement with little de-duplication weight, and the product reliability of the optical reflector 3 is ensured. The laser ablation motor shell 1 axial two end surfaces, the fastening ring 2 axial outer end surfaces and the laser ablation optical reflector 3 axial two end surfaces, namely non-optical mirror surfaces, are utilized, rapid laser pulse de-duplication has no mechanical force on products, metal and optical mirror surfaces can not be deformed and damaged, de-duplication directly acts on the metal and non-optical mirror surfaces, and pollution to the mirror surfaces can not be generated.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (21)
1. The laser radar motor comprises a rotor assembly, a stator assembly and an optical reflector, wherein the rotor assembly comprises a motor shell and a fastening ring which are fixed together, and the optical reflector is fixed on the peripheries of the motor shell and the fastening ring;
the motor shell is fixed with the fixing ring through laser welding, a first welding part is arranged on the periphery of the inner cylinder of the motor shell, and a first air groove extending along the axis direction of the motor shell is formed between the first welding part and the inner cylinder of the motor shell.
2. The lidar motor according to claim 1, wherein one end of the first air groove penetrates an outer end surface of the first welded portion, and the other end does not penetrate an inner end surface of the first welded portion.
3. The lidar motor according to claim 1, wherein the axial length of the first weld is smaller than the axial length of the inner cylinder of the motor housing.
4. The lidar motor according to any of claims 1 to 3, wherein an inner periphery of the fastening ring is provided with a second welded portion, and the motor housing and the fastening ring are welded and fixed by the first welded portion and the second welded portion.
5. The lidar motor according to claim 4, wherein the welding positions of the first welding portion and the second welding portion are respectively formed with a chamfer.
6. The lidar motor according to claim 4, wherein a second air groove extending in the axial direction is provided between the second welding portion and the body of the tightening ring.
7. The lidar motor of claim 6, wherein the second air slot has a radial dimension that is greater than the first air slot.
8. The lidar motor of claim 6, wherein the second air groove is a plurality of air grooves that are radially spaced apart from each other.
9. The lidar motor according to claim 6, wherein an axially outer end surface of the body is higher than an axially outer end surface of the second weld.
10. The lidar motor of claim 4, wherein the lidar motor further comprises a dynamic balance de-duplication structure, the dynamic balance de-duplication structure comprises a motor housing de-duplication structure, and the motor housing de-duplication structure is formed by performing laser de-duplication on two axial end surfaces of the motor housing.
11. The lidar motor according to claim 10, wherein the motor housing weight-removing structure is obtained by performing laser material removal and weight removal on an axially outer end face of the first welded portion and an axially outer end face of the other end of the motor housing.
12. The lidar motor of claim 10, wherein the dynamic balance de-duplication structure further comprises a tightening ring de-duplication structure formed by laser de-duplication of an outer end surface thereof.
13. The lidar motor according to claim 12, wherein the fastening ring comprises the second welding portion and a body portion provided outside the second welding portion, the body portion being constituted by a body having an axially outer end surface lower than an axially outer end surface of an inner cylinder of the motor housing and an extension portion extending outwardly from an outer end of the body, the axially outer end surface of the extension portion being in the same plane as the axially outer end surface of the inner cylinder of the motor housing;
the tightening ring weight removing structure is obtained by carrying out laser material removing and weight removing on the axial outer end face of the second welding part and the axial outer end face of the body.
14. The lidar motor according to any of claims 10 to 13, wherein the dynamic balance de-duplication structure further comprises an optical mirror de-duplication structure, which is formed by performing laser de-duplication of non-optical mirrors at both ends of the optical mirror.
15. A lidar comprising a lidar motor according to any of claims 1 to 14.
16. A process for a lidar motor comprising a rotor assembly, a stator assembly, and an optical mirror, the rotor assembly comprising a motor housing and a tightening ring, the optical mirror being for fixing to an outer periphery of the motor housing and the tightening ring, wherein the process comprises:
the motor shell and the fastening ring are fixed by laser welding so as to complete the assembly of the rotor assembly, wherein a first welding part is arranged on the outer periphery of the inner cylinder of the motor shell, and a first air groove extending along the axial direction of the motor shell is formed between the first welding part and the inner cylinder of the motor shell.
17. The process of claim 16, wherein the inner circumference of the tightening ring is provided with a second welding portion for welding with the first welding portion, wherein a second air groove extending in the axial direction is provided between the second welding portion and the body of the tightening ring.
18. The process according to claim 16 or 17, further comprising the step of:
primary de-duplication: and (3) completing the assembly of the rotor assembly, and carrying out laser material removal and weight removal on the axially outer end face of the fastening ring and the axially two end faces of the motor shell by using a laser.
19. The process of claim 18, further comprising the step of:
secondary de-duplication: the rotor assembly and the stator assembly which are subjected to one-time de-duplication are assembled, and laser de-duplication is carried out on the two axial end faces of the optical reflector by using a laser, so that the whole motor is balanced;
wherein the weight of the primary de-duplication is greater than the weight of the secondary de-duplication.
20. The process of claim 19, wherein the primary deduplication laser intensity is greater than the secondary deduplication laser intensity, and the secondary deduplication accuracy is greater than the primary deduplication accuracy.
21. The process of claim 19, wherein the one-time de-duplication step further comprises a step of mounting the rotor assembly on a dynamic balancer to measure unbalance amount thereof, and
in the secondary weight removing step, after laser material removal and weight removal are carried out on two axial end faces of the optical reflector by using a laser, the whole motor is arranged on a dynamic balancing machine to measure the unbalance amount of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310423715.7A CN116455165A (en) | 2021-11-24 | 2021-11-24 | Laser radar motor, laser radar and process |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111400464.8A CN114142699B (en) | 2021-11-24 | 2021-11-24 | Dynamic balance weight removing process and structure for laser radar prism motor |
| CN202310423715.7A CN116455165A (en) | 2021-11-24 | 2021-11-24 | Laser radar motor, laser radar and process |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111400464.8A Division CN114142699B (en) | 2021-11-24 | 2021-11-24 | Dynamic balance weight removing process and structure for laser radar prism motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116455165A true CN116455165A (en) | 2023-07-18 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310423715.7A Pending CN116455165A (en) | 2021-11-24 | 2021-11-24 | Laser radar motor, laser radar and process |
| CN202111400464.8A Active CN114142699B (en) | 2021-11-24 | 2021-11-24 | Dynamic balance weight removing process and structure for laser radar prism motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116609766A (en) * | 2023-07-21 | 2023-08-18 | 深圳市速腾聚创科技有限公司 | Laser radar and mobile device |
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| CN216356147U (en) * | 2021-11-24 | 2022-04-19 | 图达通智能科技(苏州)有限公司 | Vehicle-mounted laser radar motor, vehicle-mounted laser radar and vehicle |
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| JP2002199692A (en) * | 2000-12-27 | 2002-07-12 | Minebea Co Ltd | Stepping motor, stepping motor device and its drive method |
| JP2016012988A (en) * | 2014-06-30 | 2016-01-21 | シナノケンシ株式会社 | Rotary body driving device |
| CN105108345B (en) * | 2015-09-21 | 2017-06-27 | 北京航天控制仪器研究所 | A kind of laser accurate machining system and method |
| CN109709528B (en) * | 2019-01-11 | 2021-09-28 | 宁波傲视智绘光电科技有限公司 | Motor, motor element and laser emission assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116609766A (en) * | 2023-07-21 | 2023-08-18 | 深圳市速腾聚创科技有限公司 | Laser radar and mobile device |
| CN116609766B (en) * | 2023-07-21 | 2023-11-07 | 深圳市速腾聚创科技有限公司 | Laser radar and mobile device |
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| CN114142699B (en) | 2023-05-12 |
| CN114142699A (en) | 2022-03-04 |
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