CN110666346A - Curved surface cutting device - Google Patents
Curved surface cutting device Download PDFInfo
- Publication number
- CN110666346A CN110666346A CN201911095191.3A CN201911095191A CN110666346A CN 110666346 A CN110666346 A CN 110666346A CN 201911095191 A CN201911095191 A CN 201911095191A CN 110666346 A CN110666346 A CN 110666346A
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- shell
- laser beam
- curved surface
- cutting device
- reflecting mirror
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- 238000005520 cutting process Methods 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 26
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 description 16
- 238000003754 machining Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
-
- 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 discloses a curved surface cutting device, which comprises a shell and a driving device, wherein the shell is internally provided with a containing cavity, the driving device is in transmission connection with the shell and drives the shell to rotate, one end of the shell is provided with a through hole for an external laser beam to enter the containing cavity, the axial center line of the through hole is superposed with the rotation axis of the shell, and the interior of the shell is provided with a light path conducting mirror group for transmitting the laser beam entering the containing cavity; and the other end of the shell is provided with a focusing lens cone which is used for focusing the laser beams transmitted by the light path conducting lens group on the rotating axis of the shell. The invention utilizes the driving device to drive the shell to rotate, and can be matched with the traditional three-axis machine platform to be used or used as one of the rotating shafts on the five-axis machine platform, thereby realizing the processing of complex curved surfaces.
Description
Technical Field
The invention belongs to the technical field of laser cutting, and particularly relates to a curved surface cutting device for a laser cutting machine.
Background
As a high-quality, high-precision, and high-efficiency processing method, the laser cutting technique has been widely used in the fields of consumer electronics, aviation, aerospace, and automobile manufacturing. The existing laser cutting system can be applied to the processing of various plane workpieces. The flat workpiece can be processed by adopting a common three-axis laser cutting machine due to simple shape, and for the complex curved workpiece, a three-dimensional laser cutting machine is required due to complex shape.
Most of the existing laser cutting machines can only realize three-axis cutting movement, and the cutting of some curved surfaces is difficult to realize. In order to realize the multi-angle flexible operation of the laser cutting head, five-axis machining equipment is generally used, so that the cost is high; five-linkage-shaft numerical control machining equipment for machining complex curved surfaces generally needs to have a cutter center point management (RTCP) function, namely, the cutter center point and the actual contact point of the cutter and the surface of a workpiece are kept unchanged, at the moment, the cutter center point falls on a normal line of the actual contact point of the cutter and the surface of the workpiece, and a cutter handle rotates around the cutter center point. For five-axis laser cutting equipment, the RTCP function is more difficult and complex to realize, the light path of a laser beam needs to be adjusted for multiple times, and the flexible motion track of the laser cutting head is obtained through motion synthesis so as to adapt to the processing of three-dimensional workpieces with various curved surfaces. The three-dimensional laser cutting head has a complex control program, the light path is difficult to adjust, and the laser beam loses part of energy after being subjected to multiple times of light path conversion, so that the cutting efficiency is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a curved surface cutting device, wherein a driving device is used for driving a shell to rotate, and the curved surface cutting device can be matched with a traditional three-axis machine table to be used or used as one of rotating shafts on a five-axis machine table, so that the machining of a complex curved surface is realized.
In order to solve the technical problem, the invention provides a curved surface cutting device which comprises a shell and a driving device, wherein the shell is internally provided with a containing cavity, the driving device is in transmission connection with the shell and drives the shell to rotate, one end of the shell is provided with a through hole for an external laser beam to enter the containing cavity, the axial center line of the through hole is superposed with the rotation axis of the shell, and a light path conducting lens group for transmitting the laser beam entering the containing cavity is arranged inside the shell; and the other end of the shell is provided with a focusing lens cone which is used for focusing the laser beams transmitted by the light path conducting lens group on the rotating axis of the shell.
Furthermore, the curved surface cutting device further comprises a speed reducer, the shell is rotatably arranged on one end face of the speed reducer, the driving device is in transmission connection with the shell through the speed reducer, and a through hole is formed in the position, corresponding to the through hole, of the speed reducer.
Further, a bearing is arranged between the shell and the speed reducer; the driving device is a motor.
Furthermore, a motor base is arranged on one side of the other end face of the speed reducer, the motor is fixed on the motor base, and a rotating shaft of the motor is in transmission connection with a transmission mechanism in the speed reducer.
Further, light path conduction mirror group includes that three all is 45 degrees angle slope settings and locates in proper order first speculum, second speculum and third speculum in the shell, first speculum is used for receiving the entering laser beam in the appearance intracavity and vertically transmit the laser beam to the second speculum, the second speculum is used for receiving the laser beam that first speculum transmitted and transversely transmits the laser beam to the third speculum, the third speculum is used for receiving the laser beam that second speculum transmitted and vertically transmits the laser beam to the focus lens cone.
Furthermore, the curved surface cutting device also comprises an auxiliary fixing piece, the auxiliary fixing piece is fixed on the end face, provided with the motor base, of the speed reducer, and a notch for accommodating the motor base is formed in one side of the auxiliary fixing piece; the inside of supplementary mounting is equipped with and is 45 degrees fourth speculum that the angle slope set up, the fourth speculum is used for receiving outside laser beam and transversely transmits the laser beam to first speculum.
Furthermore, the auxiliary fixing piece is also provided with a transmission hole for transmitting an external laser beam to the fourth reflecting mirror.
Further, the focus lens barrel is perpendicular to the rotational axis of the housing.
Furthermore, one end of the focusing lens cone protrudes out of the shell, and the other end of the focusing lens cone is inserted into the shell and fixed by a hoop, so that the focusing lens cone is movably arranged on the shell.
Furthermore, the focusing lens barrel comprises a lens barrel and a plurality of focusing lenses arranged in the lens barrel.
The invention has the following beneficial effects:
the curved surface cutting device of the invention utilizes the driving device to drive the shell to rotate, so that the curved surface cutting device can be installed on the traditional three-axis laser cutting equipment for use, the processing of a curved surface workpiece is realized, and simultaneously, the curved surface cutting device can also be used as one of rotating shafts on a five-axis machine tool.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:
FIG. 1 is a schematic view of a curved surface cutting apparatus according to an embodiment;
FIG. 2 is a schematic view of the curved surface cutting apparatus of the embodiment with the front cover and the auxiliary fixing members removed;
fig. 3 is an exploded view of the housing in the example.
Detailed Description
For a fuller understanding of the technical content of the present invention, reference should be made to the following detailed description taken together with the accompanying drawings.
Examples
As shown in fig. 1 to 3, the curved surface cutting device for a laser cutting machine in this embodiment includes a housing 1 having a cavity 10 therein, and a driving device 2 in transmission connection with the housing 1 and driving the housing 1 to rotate, where the driving device is a motor in this embodiment; one end of the shell 1 is provided with a through hole 11 for external laser beams to enter the cavity 10, the axial center line of the through hole 11 is overlapped with the rotation axis of the shell 1, namely, the laser injected through the through hole is overlapped with or parallel to the rotation axis of the shell, and a light path conducting lens group for transmitting the laser beams entering the cavity 10 is arranged in the shell 1; the other end of the shell 1 is provided with a focusing lens barrel 3, the focusing lens barrel 3 is used for focusing the laser beam transmitted by the light path conducting lens group on the rotating axis of the shell 1, namely the emitted focal point of the laser beam is positioned on the rotating axis of the shell, so that when the motor drives the shell (namely the laser cutting head) to rotate, the focal point position of the focusing lens barrel is unchanged; in the structure, the driving device is used for driving the shell to rotate, so that the shell can be installed on the traditional three-axis laser cutting equipment for use, a curved surface workpiece is machined, the shell can be used as one of rotating shafts on a five-axis machine tool, and the focal position of the focusing lens barrel is unchanged when the shell rotates, so that the function of RTCP is realized in a mechanical mode, the control difficulty of equipment movement is reduced, the equipment cost is reduced, and the machining precision and the machining efficiency are improved.
In this embodiment, the curved surface cutting device further includes a speed reducer 4, the housing 1 is rotated and arranged on an end face of the speed reducer 4, the motor is in transmission connection with the housing 1 through a transmission mechanism inside the speed reducer 4, and a through hole 41 penetrating through the body of the speed reducer 4 is arranged at a position corresponding to the through hole 11.
Specifically, a bearing 5 is arranged between the shell 1 and the speed reducer 4, and the friction force between the shell and the speed reducer is reduced through the bearing, so that the shell can rotate conveniently; a motor seat 42 is arranged on one side of the other end face of the speed reducer 4, the motor is fixed on the motor seat 42, and a rotating shaft of the motor is in transmission connection with a transmission mechanism in the speed reducer 4.
In this embodiment, the optical path conducting lens group includes three first reflecting mirrors 6, second reflecting mirrors 7 and third reflecting mirrors 8, which are all arranged in an inclined manner at an angle of 45 degrees and are sequentially arranged in the housing 1, the first reflecting mirror 6 is used for receiving the laser beam entering the housing 10 and longitudinally transmitting the laser beam to the second reflecting mirror 7, the second reflecting mirror 7 is used for receiving the laser beam transmitted by the first reflecting mirror 6 and transversely transmitting the laser beam to the third reflecting mirror 8, and the third reflecting mirror 8 is used for receiving the laser beam transmitted by the second reflecting mirror 7 and longitudinally transmitting the laser beam to the focusing lens barrel 3; specifically, the laser beam advances along the through hole and the through hole, and strikes the first reflecting mirror 6 to be vertically reflected once, so that the laser beam advances along the longitudinal direction, strikes the second reflecting mirror to be vertically reflected twice, so that the laser beam advances along the transverse direction, strikes the third reflecting mirror to be vertically reflected three times, so that the laser beam advances along the longitudinal direction until the laser beam is converged and focused on the rotating axis of the housing by the focusing lens barrel, and the advancing directions of the laser beam after being reflected by the first reflecting mirror and the third reflecting mirror are opposite.
In this embodiment, the curved surface cutting device further includes an auxiliary fixing member 9, the auxiliary fixing member 9 is fixed on an end surface of the speed reducer, where the motor base is provided, and a notch for accommodating the motor base 42 is provided on one side of the auxiliary fixing member 9; a fourth reflector 91 obliquely arranged at an angle of 45 degrees is arranged inside the auxiliary fixing member 9, and the fourth reflector 91 is used for receiving an external laser beam and transversely transmitting the laser beam to the first reflector 6 along the through hole and the through hole; a transmission hole 92 is formed in the auxiliary fixing member 9 on one side corresponding to a laser emitter on the laser cutting machine, the transmission hole 92 is used for injecting a laser beam emitted by the laser emitter onto the fourth reflecting mirror 91, and the laser beam injected onto the fourth reflecting mirror 91 is vertically reflected, so that the laser beam is transversely advanced along the through hole and is transmitted to the first reflecting mirror 6; in the above structure, only the housing and the components disposed on the housing can rotate, and the positions of the speed reducer, the motor and the auxiliary fixing member remain unchanged, i.e., the fourth reflecting mirror 91 can continuously receive the laser beam emitted by the laser emitter and transmit the laser beam to the focusing lens barrel for focusing.
The optical path conducting lens group can strictly ensure that the laser beam 20 is transmitted according to the route of the laser emitter → the fourth reflector → the first reflector → the second reflector → the third reflector → the focusing lens cone; even if the housing rotates, the laser beam does not change the transmission route.
Specifically, the focusing barrel 3 is perpendicular to the rotation axis of the housing 1, so that the cutting path of the laser is perpendicular to the object to be cut.
Specifically, one end of the focusing lens barrel 3 protrudes out of the shell 1, the other end of the focusing lens barrel 3 is inserted into the shell 1 and fixed by the hoop 12, so that the focusing lens barrel 3 is movably arranged on the shell 1, the position of the focusing lens barrel can be adjusted up and down by unscrewing the hoop, the focusing focus of the focusing lens barrel is changed, later-stage installation and adjustment are facilitated, the focusing lens barrels with different lengths can be used, and the focusing focus of the focusing lens barrel can fall on the axis of a rotating shaft of the shell by adjusting the position of the focusing lens barrel up and down, so that the application range of the cutting device is widened; and the focusing focus of the focusing lens barrel can be adjusted according to actual requirements without falling on the rotating axis of the shell when an object to be cut is not required to be cut according to the cutting requirements of curved surface processing.
Specifically, the focusing barrel 3 includes a barrel and a plurality of focusing lenses (not shown) disposed inside the barrel.
In this embodiment, the housing 1 includes a housing 13 having the cavity 10 and a front cover 14 covering the housing 13, the first reflector, the second reflector and the third reflector are all fixed to the housing by screws, and the fourth reflector is fixed to the auxiliary fixing member by screws.
In this embodiment, the four mirrors may be plane mirrors, total reflection prisms or right-angle prisms, because the light may be deflected by using the reflection characteristics of the plane mirrors or the reflection characteristics of the prisms.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.
Claims (10)
1. The curved surface cutting device is characterized by comprising a shell with a containing cavity inside and a driving device which is in transmission connection with the shell and drives the shell to rotate, wherein one end of the shell is provided with a through hole for an external laser beam to enter the containing cavity, the axial center line of the through hole is superposed with the rotation axis of the shell, and a light path conducting mirror group for transmitting the laser beam entering the containing cavity is arranged inside the shell; and the other end of the shell is provided with a focusing lens cone which is used for focusing the laser beams transmitted by the light path conducting lens group on the rotating axis of the shell.
2. The curved surface cutting device according to claim 1, further comprising a speed reducer, wherein the housing is rotatably disposed on an end surface of the speed reducer, the driving device is in transmission connection with the housing through the speed reducer, and a through hole is disposed on the speed reducer at a position corresponding to the through hole.
3. The curved surface cutting device according to claim 2, wherein a bearing is provided between the housing and the reducer; the driving device is a motor.
4. The curved surface cutting device according to claim 3, wherein a motor base is provided on one side of the other end surface of the speed reducer, the motor is fixed to the motor base, and a rotating shaft of the motor is in transmission connection with a transmission mechanism inside the speed reducer.
5. The curved surface cutting device according to claim 4, wherein the optical path conducting lens group comprises three first reflecting mirrors, a second reflecting mirror and a third reflecting mirror, wherein the three first reflecting mirrors, the second reflecting mirrors and the third reflecting mirrors are all arranged in the housing in an inclined manner at an angle of 45 degrees, the first reflecting mirror is used for receiving the laser beam entering the cavity and longitudinally transmitting the laser beam to the second reflecting mirror, the second reflecting mirror is used for receiving the laser beam transmitted by the first reflecting mirror and transversely transmitting the laser beam to the third reflecting mirror, and the third reflecting mirror is used for receiving the laser beam transmitted by the second reflecting mirror and longitudinally transmitting the laser beam to the focusing lens barrel.
6. The curved surface cutting device according to claim 5, further comprising an auxiliary fixing member fixed to an end surface of the speed reducer on which the motor base is provided, and a notch for accommodating the motor base is provided on one side of the auxiliary fixing member; the inside of supplementary mounting is equipped with and is 45 degrees fourth speculum that the angle slope set up, the fourth speculum is used for receiving outside laser beam and transversely transmits the laser beam to first speculum.
7. The curved surface cutting apparatus as claimed in claim 6, wherein said auxiliary fixture is further provided with a transmission hole for transmitting an external laser beam to said fourth reflecting mirror.
8. The curved surface cutting device according to any one of claims 1 to 7, wherein the focus lens barrel is perpendicular to the rotational axis of the housing.
9. The curved surface cutting device according to claim 8, wherein one end of the focus lens barrel protrudes from the housing, and the other end of the focus lens barrel is inserted into the housing and fixed by a hoop, so that the focus lens barrel is movably disposed on the housing.
10. The curved surface cutting device according to claim 9, wherein the focusing barrel includes a barrel and a plurality of focusing lenses disposed inside the barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095191.3A CN110666346A (en) | 2019-11-11 | 2019-11-11 | Curved surface cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095191.3A CN110666346A (en) | 2019-11-11 | 2019-11-11 | Curved surface cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110666346A true CN110666346A (en) | 2020-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911095191.3A Pending CN110666346A (en) | 2019-11-11 | 2019-11-11 | Curved surface cutting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110666346A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115431103A (en) * | 2021-06-02 | 2022-12-06 | 上海名古屋精密工具股份有限公司 | Method and device for compensating ultra-fast laser light path rotation error and machine tool |
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|---|---|---|---|---|
| US20060191883A1 (en) * | 2005-02-25 | 2006-08-31 | Michael Wessner | Laser processing |
| CN201239859Y (en) * | 2008-06-26 | 2009-05-20 | 北京大恒激光设备有限公司 | Cutting angle adjustable laser cutting device and laser cutting machine equipped therewith |
| CN202824995U (en) * | 2012-01-19 | 2013-03-27 | 昆山思拓机器有限公司 | System of cutting reflective light path by laser and conducting auto-collimation on focus lens |
| CN103212788A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Laser cutting turning light path and focusing mirror auto-collimation system |
| CN107186338A (en) * | 2017-07-04 | 2017-09-22 | 华工法利莱切焊系统工程有限公司 | Laser cutting head and dimension laser cutting device |
| CN109277704A (en) * | 2018-09-07 | 2019-01-29 | 济南邦德激光股份有限公司 | Oscillating laser cutting head |
| WO2019047347A1 (en) * | 2017-09-11 | 2019-03-14 | 山东镭鸣数控激光装备有限公司 | Optical fiber three-dimensional laser cutting apparatus |
| CN211438578U (en) * | 2019-11-11 | 2020-09-08 | 常州英诺激光科技有限公司 | Curved surface cutting device |
-
2019
- 2019-11-11 CN CN201911095191.3A patent/CN110666346A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060191883A1 (en) * | 2005-02-25 | 2006-08-31 | Michael Wessner | Laser processing |
| CN201239859Y (en) * | 2008-06-26 | 2009-05-20 | 北京大恒激光设备有限公司 | Cutting angle adjustable laser cutting device and laser cutting machine equipped therewith |
| CN202824995U (en) * | 2012-01-19 | 2013-03-27 | 昆山思拓机器有限公司 | System of cutting reflective light path by laser and conducting auto-collimation on focus lens |
| CN103212788A (en) * | 2012-01-19 | 2013-07-24 | 昆山思拓机器有限公司 | Laser cutting turning light path and focusing mirror auto-collimation system |
| CN107186338A (en) * | 2017-07-04 | 2017-09-22 | 华工法利莱切焊系统工程有限公司 | Laser cutting head and dimension laser cutting device |
| WO2019047347A1 (en) * | 2017-09-11 | 2019-03-14 | 山东镭鸣数控激光装备有限公司 | Optical fiber three-dimensional laser cutting apparatus |
| CN109277704A (en) * | 2018-09-07 | 2019-01-29 | 济南邦德激光股份有限公司 | Oscillating laser cutting head |
| CN211438578U (en) * | 2019-11-11 | 2020-09-08 | 常州英诺激光科技有限公司 | Curved surface cutting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115431103A (en) * | 2021-06-02 | 2022-12-06 | 上海名古屋精密工具股份有限公司 | Method and device for compensating ultra-fast laser light path rotation error and machine tool |
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