CN112247380A - Rotary-cut perforating device based on dove prism - Google Patents
Rotary-cut perforating device based on dove prism Download PDFInfo
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- CN112247380A CN112247380A CN202011156231.3A CN202011156231A CN112247380A CN 112247380 A CN112247380 A CN 112247380A CN 202011156231 A CN202011156231 A CN 202011156231A CN 112247380 A CN112247380 A CN 112247380A
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- dove prism
- optical wedge
- optical
- focusing lens
- laser
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention belongs to the technical field of laser processing, and particularly provides a rotary cutting and punching device based on a dove prism, which comprises a supporting plate capable of moving horizontally as a whole, a reflecting mirror, a group of optical wedges, the dove prism and a focusing lens, wherein the reflecting mirror, the group of optical wedges, the dove prism and the focusing lens are arranged in sequence along the direction of a light path, the group of optical wedges are complementarily arranged, the reflecting mirror and the group of optical wedges are fixedly arranged on the supporting plate, the dove prism is arranged in a rotatable hollow motor, and a processing material is positioned on the focus. The scheme has the advantages of fewer adjusting devices, simpler installation steps and simpler adjusting steps. The optical wedge device can be used for holes with different apertures and different tapers without replacing devices, the problems of simple adjustment of the rotation angle of the optical wedge and the overall position of the carriage can be solved, and the processing cost is greatly reduced. The efficiency of the hollow motor working on the rotation of the laser beam is improved by utilizing the dove prism, the punching efficiency is doubled compared with other methods, and the overall efficiency is greatly improved.
Description
Technical Field
The invention belongs to the technical field of laser processing, and particularly relates to a rotary cutting and punching device based on a dove prism.
Background
Laser drilling is the laser processing technology which is the earliest to achieve the practicability, and is one of the main application fields of laser processing, and the laser drilling processing technology is widely applied to numerous industrial processing technologies and is mainly used in the industries of aerospace, automobile manufacturing, electronic instruments and the like. How to solve the required aperture size of processing round hole, aperture tapering and circularity are the main problems that laser beam drilling needs to consider. The traditional punching process mainly comprises drill bit punching and electric spark machining punching, the drill bit punching precision is low, the hole diameter change cannot be timely changed, the traditional punching process is suitable for holes with the diameter of more than 2mm, the drill bit is easy to break, the yield is low, the like, the electric spark punching has the problems of instability, high energy consumption and the like, the machining speed is low, and the holes punched by the method have the problems of edge burning, conicity and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rotary cutting and punching device based on a dove prism, which has a simple structure and low cost and aims to solve the technical problem.
The invention provides a rotary-cut punching device based on a dove prism, which comprises a supporting plate capable of moving horizontally as a whole, a reflector, a group of optical wedges, the dove prism and a focusing lens, wherein the reflector, the optical wedges, the dove prism and the focusing lens are sequentially arranged along the direction of a light path, the reflector and the optical wedge group are fixedly arranged on the supporting plate, the dove prism is arranged in a rotatable hollow motor, and a processing material is positioned on the focus of the focusing lens.
Preferably, a set of two complementary optical wedges are identical in model and are respectively a fixed optical wedge and a deflectable optical wedge, wherein the fixed optical wedge is fixed, and the deflectable optical wedge is arranged on the supporting plate in a deflectable manner.
Preferably, the fixed wedge deflects the laser light to a certain extent, a laser deflection angle δ of the fixed wedge is (n-1) α, n is a refractive index of the wedge, α is a wedge refraction angle, the deflectable wedge deflects θ, the deflection angle θ of the deflectable wedge defines a wedge thickness to deflect toward the fixed wedge to be positive and negative in reverse, and a final laser deflection angle is (n-1) α
Preferably, the focal length R and the aperture R of the focusing lens are expressed as:
R＝ftanφ
wherein f is the focal length of the focusing lens, phi is the deflection angle of the laser beam, and R is the aperture size.
Preferably, the pallet is driven by a motor.
Preferably, the 90-degree plane reflector on the supporting plate forms an included angle of 45 degrees with the light rays, so that the incident light rays and the emergent light rays are in the same horizontal plane.
Preferably, the light beam passes through an axis of the hollow motor about which the hollow motor rotates.
The invention has the beneficial effects that: the rotary cutting and punching device based on the dove prism comprises a supporting plate capable of moving horizontally as a whole, a reflecting mirror, a group of optical wedges, the dove prism and a focusing lens, wherein the reflecting mirror, the group of optical wedges, the dove prism and the focusing lens are sequentially arranged along the direction of a light path, the reflecting mirror and the group of optical wedges are arranged in a complementary mode, the dove prism is arranged in a rotatable hollow motor, and a processing material is located on the focus of the focusing lens. The scheme has the advantages of fewer adjusting devices, simpler installation steps and simpler adjusting steps. The optical wedge device can be used for holes with different apertures and different tapers without replacing devices, the problems of simple adjustment of the rotation angle of the optical wedge and the overall position of the carriage can be solved, and the processing cost is greatly reduced. The efficiency of the hollow motor working on the rotation of the laser beam is improved by utilizing the dove prism, the punching efficiency is doubled compared with other methods, and the overall efficiency is greatly improved.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a rotary-cut perforating device based on dove prism. (ii) a
FIG. 2 is a detailed schematic diagram of two complementary wedges of the rotary-cut perforating device based on dove prism according to the present invention;
FIG. 3 is a schematic view of a rotary-cut perforating device based on dove prism, in which one side of a laser beam is perpendicularly incident on the surface of a material;
FIG. 4 is a schematic diagram of the laser beam of the rotary-cut perforating device based on dove prism of the present invention being obliquely incident on the surface of the material;
fig. 5 is a schematic diagram of the focusing lens of the rotary-cut perforating device based on dove prism to adjust the focusing point to the inner part and the bottom part of the material.
Description of reference numerals: the device comprises a supporting plate 1, a reflecting mirror 2, an optical wedge 3, a hollow motor 4, a dove prism 5, a focusing mirror 6 and a processing material 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The invention provides a rotary-cut perforating device based on a dove prism, which comprises a supporting plate capable of moving horizontally as a whole, a reflector, a group of optical wedges, the dove prism and a focusing lens, wherein the reflector, the optical wedges, the dove prism and the focusing lens are sequentially arranged along the direction of a light path, the reflector and the optical wedge group are arranged on the supporting plate in a complementary mode, the dove prism is arranged in a rotatable hollow motor, and a processing material is located on the focus of the focusing lens. The centers of the reflector on the carriage and the two complementarily-placed optical wedges are positioned on the central axis of the laser beam;
one of the two complementary optical wedges is fixed, and the other optical wedge can be manually adjusted and can also be controlled to rotate by an electric control system with a power supply through wireless control. The fixed optical wedge can make laser form fixed deflection, and through the certain angle of deflecting about the optical wedge that can deflect, and then adjust laser deflection angle, rethread focusing lens, according to the formation of image law of focusing mirror, aperture size and laser beam incident with the focusing mirror when with the contained angle that deflects directly proportional, can adjust the aperture size of processing round hole.
The position of the laser beam relative to the focusing lens is adjusted by the reflector on the carriage through the integral movement of the carriage, corresponding calculation is carried out firstly, the carriage is adjusted to a proper position, and whether the moving distance of the carriage is proper or not is checked through the taper of the processed hole.
The movement of the focusing lens can adjust the movement of a focusing point relative to the inner surface or the inner part of the material, and reduce the influence of the laser beam on the aperture taper. Laser beams are focused and then are irradiated on the surface of a material, the laser beams are driven to rotate by a motor, energy received by the interior of the material is insufficient after the energy of the laser is acted on the surface, and the material cannot be completely punctured, so that the position of a focus is lowered when the hole is punched, the focus is slowly lowered from the upper surface of the material which is just started to the lower surface of the material, the rotary cutting is integrated, and the punching mode can be expressed as spiral descending punching.
Preferably, a set of two complementary optical wedges are identical in type and are respectively a fixed optical wedge and a deflectable optical wedge, wherein the fixed optical wedge is fixed, and the deflectable optical wedge is arranged on the supporting plate in a deflectable manner. The deflection angle of the optical wedge is the key for adjusting the aperture size, and the effect of the optical wedge is further optimized by calculating and selecting a proper optical wedge.
Preferably, the fixed optical wedge deflects laser light to a certain extent, a laser deflection angle δ is (n-1) α, n is a refractive index of the optical wedge, α is an optical wedge refraction angle, the deflectable optical wedge deflects θ, the deflection angle θ of the deflectable optical wedge defines a deflection angle of the optical wedge thick edge towards the fixed optical wedge, the deflection angle is positive and negative, and a final deflection angle of the laser light is (n-1) α
Preferably, the expression of the focal length R and the aperture R of the focusing lens is:
R＝ftanφ
wherein f is the focal length of the focusing lens, phi is the deflection angle of the laser beam, and R is the aperture size.
Preferably, the pallet is driven by a motor. Or may be manually operated.
Preferably, the 90-degree plane reflector on the supporting plate forms an included angle of 45 degrees with the light rays, so that the incident light rays and the emergent light rays are on the same horizontal plane. When laser beams are incident, the plane reflector on the carriage forms an included angle of 45 degrees with the light rays, the horizontal incidence of the incident light rays is kept, the incident light rays and the emergent light rays are in the same horizontal plane, and the influence of other aspects on a light path is reduced
Preferably, the beam passes through an axis of the hollow motor about which the hollow motor rotates.
As shown in fig. 1 to 5, a rotary cutting and punching device based on dove prism comprises a reflector 2 and a group of optical wedges 3 which are complementarily arranged along the direction of an optical path, wherein the reflector 2 and the group of optical wedges 3 are arranged on a carriage 1 which can move integrally, pass through the dove prism 5 carried by a hollow motor 4, pass through a focusing lens 6 and finally focus light and hit on a processing material 7, as shown in fig. 1.
According to fig. 2, the size of the machining aperture is related to the deflection angle Φ of the laser beam, R ═ ftan Φ, and the larger the deflection angle Φ, the larger the machining aperture R will be.
The part for generating deflection angle is performed by two optical wedges, and the deflection angle delta generated by the fixed optical wedge1(n-1) α, angle of refraction of laser light after passing through first face of deflecting wedge
Deflection angle delta between laser and optical axis2Z- (θ + α); the laser beam passes through the second surface of the deflecting wedge at an incident angle β δ2+ θ ═ z- α, angle of refraction z2When n (β sinn) is equal to rac si, the final deflection angle is equal to z2+β＝z2+ z-alpha, if a larger deflection angle needs to be generated, the deflection optical wedge can be directly rotated to change the deflection angle theta of the optical wedge on the premise of not changing the used devices, the angles of the rotatable optical wedge are different, and the deflection angles generated by laser are also different.
After the relevant deflection is further adjusted, the position of the focus needs to be adjusted, the thermal response of the focused light beam on the vertical side can be further reduced by placing the focus on the bottom surface, however, whether the oblique side of the focused light beam contacts the other side of the round hole needs to be considered, and if the oblique side of the focused light beam contacts the other side of the round hole, the focus needs to be moved upwards. In addition, the overall movement of the carriage is adjusted, as shown in fig. 3, to maintain the outer side perpendicular to the focus, so as to obtain a non-tapered machined surface. Fig. 4 is a schematic diagram of two cases of oblique incidence of the laser beam on the surface of the material, and fig. 5 is a schematic diagram of the focusing lens adjusting the focusing point to the inside and the bottom of the material.
The rotary cutting and punching device using the laser can effectively solve the related problems of the traditional punching, compared with the traditional method, the rotary cutting and punching device has the advantages of high precision, and the precision can be adjusted to the micron level after the laser is focused, so that the precision problem in the traditional process is solved. And because the laser has the characteristics of high energy, good directivity and the like, the thermal influence of the surface of the material perforated by the method is small; meanwhile, laser drilling is non-contact, so that the structure of the finally drilled material cannot be damaged, and various characteristics of the hole can be kept to the maximum extent. On the other hand, the deflection and the position of a laser beam are changed through the rotation of the optical wedge and the integral movement of the supporting plate, the diameter and the taper of the processing hole can be conveniently and directly adjusted through the focusing of the focusing lens, and the processing method is simple and convenient.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1. the invention provides a rotary-cut perforating device based on dove prism, which determines the size and the taper of a processed aperture by a reflector and a group of complementary optical wedges, and has the advantages of fewer adjusting devices, simpler installation steps and simpler adjusting steps. The optical wedge device can be used for holes with different apertures and different tapers without replacing devices, the problems of simple adjustment of the rotation angle of the optical wedge and the overall position of the carriage can be solved, and the processing cost is greatly reduced.
2. The invention provides a rotary cutting and punching device based on a dove prism, which rotates a laser beam by using the dove prism, and has the following characteristics: the dove prism rotates theta, and the passing laser beam rotates 2 theta, so that the efficiency of the hollow motor working on the rotation of the laser beam is improved by utilizing the dove prism, the punching efficiency is doubled compared with other methods, and the overall efficiency is greatly improved.
3. The invention provides a rotary-cut perforating device based on a dove prism, which is characterized in that one side of a focused laser beam is vertically converged to a focus through the action of a group of complementary optical wedge devices and a focusing lens, the heat effect near a hole on the upper surface of a material and the possibility of edge breakage at the periphery of the hole can be reduced in the perforating process under the action of the vertical edge, the vertical incidence of the laser beam is ensured through the vertical edge, the taper of the hole is ensured, and the attractiveness of the hole is improved.
4. The invention provides a rotary-cut perforating device based on a dove prism, which can adjust the position of a focus point by moving a focusing lens, move the focus point to the surface of a material, the bottom surface of the material or other positions of the material, and select a proper position, so that the distributed energy in laser can be fully utilized, and the influence of a laser beam on aperture taper is adjusted.
5. The invention provides a rotary-cut punching device based on dove prisms, which can control the aperture and the taper in real time in the process of processing micropores and process the micropores with complex structures after an electric control system is introduced into the device.
In summary, the laser beam is reflected by a reflector, passes through a set of optical wedges which are arranged in a complementary way, so that the laser beam has a certain deflection angle, passes through a hollow motor with a dove prism to drive the laser beam to rotate, and finally, the beam with the deflection angle is focused into a beam with one side vertical to the material through a focusing lens. The method can be used in a plurality of fields such as laser drilling or surface treatment of certain materials and the like to improve the process efficiency.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (7)
1. The utility model provides a rotary-cut perforating device based on dove prism which characterized in that: the laser processing device comprises a supporting plate capable of moving horizontally as a whole, a reflecting mirror, a group of optical wedges, a dove prism and a focusing lens, wherein the reflecting mirror, the group of optical wedges, the dove prism and the focusing lens are arranged along the direction of a light path in sequence, the reflecting mirror and the group of optical wedges are arranged on the supporting plate in a complementary mode, the dove prism is arranged in a rotatable hollow motor, and a processing material is located on the focus of the focusing lens.
2. The dove prism-based rotary-cut perforating device as claimed in claim 1, wherein: the two optical wedges which are complementarily placed have the same type and are respectively a fixed optical wedge and a deflectable optical wedge, wherein the fixed optical wedge is fixed, and the deflectable optical wedge is arranged on the supporting plate in a deflection way.
3. The dove prism-based rotary-cut perforating device as claimed in claim 2, wherein: the fixed optical wedge deflects laser to a certain extent, the laser deflection angle delta is (n-1) alpha, n is the refractive index of the optical wedge, alpha is the refraction angle of the optical wedge, the deflectable optical wedge deflects theta, the deflection angle theta of the deflectable optical wedge defines the deflection of the thick edge of the optical wedge towards the fixed optical wedge to be positive and negative in the opposite direction, and the final deflection angle of the laser is (n-1) alpha
4. The dove prism-based rotary-cut perforating device as claimed in claim 1, wherein: the expression of the focal length R and the aperture R of the focusing lens is as follows:
R＝ftanφ
wherein f is the focal length of the focusing lens, phi is the deflection angle of the laser beam, and R is the aperture size.
5. The dove prism-based rotary-cut perforating device as claimed in claim 1, wherein: the pallet is driven by a motor.
6. The dove prism-based rotary-cut perforating device as claimed in claim 1, wherein: the 90-degree plane reflector on the supporting plate forms a 45-degree included angle with light rays, so that incident light rays and emergent light rays are on the same horizontal plane.
7. The dove prism-based rotary-cut perforating device as claimed in claim 1, wherein: the light beam passes through an axis of the hollow motor, about which the hollow motor rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011156231.3A CN112247380A (en) | 2020-10-26 | 2020-10-26 | Rotary-cut perforating device based on dove prism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011156231.3A CN112247380A (en) | 2020-10-26 | 2020-10-26 | Rotary-cut perforating device based on dove prism |
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| CN112247380A true CN112247380A (en) | 2021-01-22 |
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| CN202011156231.3A Pending CN112247380A (en) | 2020-10-26 | 2020-10-26 | Rotary-cut perforating device based on dove prism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846546A (en) * | 2021-03-10 | 2021-05-28 | 武汉华工激光工程有限责任公司 | Laser cutting system |
| CN112975171A (en) * | 2021-03-25 | 2021-06-18 | 清华大学 | Ultrafast laser micropore rotary-cut processingequipment |
| CN113385838A (en) * | 2021-05-12 | 2021-09-14 | 华东师范大学 | Method for improving femtosecond laser metal material drilling efficiency and drilling thickness |
| CN114227028A (en) * | 2021-12-29 | 2022-03-25 | 中国科学院西安光学精密机械研究所 | Spiral scanning laser punching head and punching method |
| CN114226954A (en) * | 2021-12-27 | 2022-03-25 | 中国科学院西安光学精密机械研究所 | Laser processing system and method for surface insulation structure of heterogeneous material |
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2020
- 2020-10-26 CN CN202011156231.3A patent/CN112247380A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846546A (en) * | 2021-03-10 | 2021-05-28 | 武汉华工激光工程有限责任公司 | Laser cutting system |
| CN112846546B (en) * | 2021-03-10 | 2022-04-26 | 武汉华工激光工程有限责任公司 | Laser cutting system |
| WO2022188321A1 (en) * | 2021-03-10 | 2022-09-15 | 武汉华工激光工程有限责任公司 | Laser cutting system |
| CN112975171A (en) * | 2021-03-25 | 2021-06-18 | 清华大学 | Ultrafast laser micropore rotary-cut processingequipment |
| CN113385838A (en) * | 2021-05-12 | 2021-09-14 | 华东师范大学 | Method for improving femtosecond laser metal material drilling efficiency and drilling thickness |
| CN113385838B (en) * | 2021-05-12 | 2022-07-08 | 华东师范大学 | Method for improving femtosecond laser metal material drilling efficiency and drilling thickness |
| CN114226954A (en) * | 2021-12-27 | 2022-03-25 | 中国科学院西安光学精密机械研究所 | Laser processing system and method for surface insulation structure of heterogeneous material |
| CN114227028A (en) * | 2021-12-29 | 2022-03-25 | 中国科学院西安光学精密机械研究所 | Spiral scanning laser punching head and punching method |
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