CN112247342B - Switching light editable laser processing system and method - Google Patents
Switching light editable laser processing system and method Download PDFInfo
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- CN112247342B CN112247342B CN202011049432.3A CN202011049432A CN112247342B CN 112247342 B CN112247342 B CN 112247342B CN 202011049432 A CN202011049432 A CN 202011049432A CN 112247342 B CN112247342 B CN 112247342B
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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
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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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Abstract
The invention discloses a switching light editable laser processing system and a switching light editable laser processing method, wherein the system comprises a laser emitting device, processing equipment, a monitoring module and a control center, the processing equipment is used for adopting a laser processing element, the monitoring is used for measuring the delay time of the processing equipment and the laser delay time, and the control center controls the time point of emitting laser or finishing light emitting by the laser emitting device according to the delay time. According to the laser processing device and the laser processing method, the mechanical delay time of the processing device is calculated or measured, the light emitting time and the light emitting end time of the laser device are properly set according to the delay time, the duration time of laser after the starting point and the end point is shortened, the phenomenon of over-processing does not occur in the whole processing process, the processing precision is improved, and the loss is reduced.
Description
Technical Field
The invention relates to the technical field of laser processing, in particular to a switching light editable laser processing system and method.
Background
At present, laser processing is widely applied to the processing fields of automobiles, electronics, electrical appliances, aviation, metallurgy, mechanical manufacturing and the like as an advanced manufacturing technology, and plays an increasingly important role in improving the product quality, improving the labor productivity, realizing automation, avoiding pollution and reducing the material consumption. Compared with the traditional processing mode, the laser processing has many advantages, such as energy concentration, small heat affected zone, easy focusing and guiding of laser beams, convenient automatic control and the like. To realize the automatic control of laser processing, the traditional realization method is as follows: the control system outputs a high level signal, the laser emitting device starts to operate and outputs laser, the laser is focused on an element to be processed, meanwhile, a machine and a transmission part of the processing equipment start to move according to a set track, and the laser processing equipment starts to process from a starting point; when the machine and the transmission part of the equipment move to a set end point, the control system outputs a low level signal, the laser emitting device stops running, and meanwhile, the machine and the transmission part of the equipment also stop moving.
However, due to the delayed nature of the mechanical movement, at the beginning of the machining, after the control system outputs a high level, the machine and its transmission components will have a time delay (τ) from the receipt of the start signal to the start of the movement1) During the delay period, the laser emitter is always in working state, and the laser will always act on the initial point of the element to be machined, so that the initial point of the element to be machined gathers a great deal of heat, and the phenomenon of over-machining occurs, which causes certain machining precision of the elementInfluence and even damage of the processing element; when the machine and the transmission part thereof move to the processing end point, the control system can output a low level signal to stop the laser emitting device and finish the movement of the machine and the transmission part thereof, but a time delay is also generated between the movement of the machine and the transmission part thereof to the processing end point and the stop of the laser emitting device. During this time, the laser emitting device is still in operation and the machine and its transmission components are still in motion, again resulting in over-machining.
Therefore, overcoming the over-processing in the laser processing process is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a switching light editable laser processing system and a switching light editable laser processing method, which can be used for reducing the duration time of laser on a starting point and an ending point by calculating or measuring the mechanical delay time of processing equipment and properly setting the light emitting time and the ending time of the laser equipment according to the delay time, ensuring that the irradiation time of the laser on each processing point is the same in the whole processing process, improving the processing precision and reducing the loss.
In a first aspect, the above object of the present invention is achieved by the following technical solutions:
a switching light editable laser processing system comprises a laser emitting device, processing equipment, a monitoring module and a control center, wherein the processing equipment is used for adopting a laser processing element, the monitoring module is used for measuring delay time and laser delay time of the processing equipment, and the control center controls a time point of laser emitting device emitting laser or finishing light emitting according to the delay time, so that the processing uniformity of the laser on a starting point and an end point of element processing is ensured.
The invention is further configured to: the delay time comprises processing equipment delay time and laser delay time, wherein the processing equipment delay time comprises starting delay time which is used for recording a time interval from the moment that the control center sends a processing starting signal to the processing equipment to the moment that the processing equipment starts to run; the laser delay time comprises laser initial delay time and laser ending delay time, and the laser initial delay time refers to a time interval from the beginning of sending a laser emission signal by the control center to the moment when the laser emission device starts emitting laser beams; the laser end delay time is the time interval from the time when the control center sends the laser emission end signal to the time when the laser emission device stops working and emits light.
The invention is further configured to: the control center calculates the difference between the starting delay time and the laser initial delay time to obtain a first delay time, and after the control center sends a processing starting signal and delays the first delay time, the control center sends a laser emission signal, so that when the processing element reaches an initial processing position, a laser beam also starts to be emitted.
The invention is further configured to: and the control center advances a laser ending delay time before sending the machining stopping signal, sends a laser emission ending signal to the laser emission device and controls the laser emission device to stop emitting laser.
The invention is further configured to: before the processing equipment starts to process, the control center simultaneously sends a processing starting signal and a laser emission signal, and the monitoring module measures the duration time of laser emitted by the laser emission device at a processing starting point, namely the starting duration delay time; after the machining is finished, the control center simultaneously sends a machining stopping signal and a laser emission ending signal, and the duration of the laser after the final machining point is measured as the ending duration delay time.
The invention is further configured to: and the control center calculates the laser emission time as the time of starting to process the signal, and then starts the time delay minus the starting duration delay time.
The invention is further configured to: the control center calculates the laser emission stopping time as the time of subtracting the stopping duration delay time from the machining stopping signal time.
The invention is further configured to: the control center includes a memory and a processor, the memory storing a computer program that can be loaded and executed by the processor for processing by the system.
In a second aspect, the above object of the present invention is achieved by the following technical solutions: a method for processing laser with editable switch light includes measuring or calculating start delay time of laser at processing start point, delaying a start delay time after starting to send processing signal and starting to emit laser.
The invention is further configured to: and measuring or calculating the end delay time of the laser at the final processing point, and before the processing signal is stopped, advancing the end delay time and stopping laser emission.
Compared with the prior art, the invention has the beneficial technical effects that:
1. according to the method and the device, the delay time is accurately measured or calculated, so that the time of laser emission or ending emission is accurately grasped, and the accuracy of laser processing is ensured;
2. furthermore, the method and the device overcome the excessive processing after the starting point and the final point by calculating the processing equipment and the laser delay time, and improve the processing quality.
Drawings
FIG. 1 is a schematic diagram of a timing control architecture according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a timing control structure according to another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Detailed description of the preferred embodiment
The invention discloses a switching light editable laser processing system which comprises a laser emitting device, processing equipment, a monitoring module and a control center, wherein the processing equipment is used for processing elements by adopting laser according to a processing starting signal and a processing stopping signal of the control center; the laser emitting device and the processing equipment are movably and fixedly installed, the monitoring module is used for monitoring the delay time of the processing equipment and the laser delay time and transmitting the delay time to the control center, and the control center controls the time point of emitting laser or finishing light emitting of the laser emitting device according to the delay time so as to ensure that the processing time of the laser on each processing point of the element is the same.
The delay time of the processing equipment comprises starting delay time which is used for recording a time interval from the moment that the control center sends a processing starting signal to the processing equipment to the moment that the processing equipment starts to run.
The laser delay time comprises laser initial delay time and laser ending delay time, and the laser initial delay time refers to a time interval from the beginning of sending a laser emission signal by the control center to the moment when the laser emission device starts emitting laser beams; the laser end delay time is the time interval from the time when the control center sends the laser emission end signal to the time when the laser emission device stops working and emits light.
Before processing, the delay time is measured, and the starting delay time tau 1, the laser starting delay time tau 3 and the laser ending delay time tau 4 of the equipment are obtained through measurement.
As shown in fig. 1, the control signal sent by the control center is shown as a signal line in the figure, the operation timing of the processing equipment is shown as a signal line B in the figure, the operation timing of the laser emitting device after the delay is shown as a signal line C in the figure, and the operation timing of the laser emitting device under the delay control is shown as a signal line D in the figure.
And the control center sends a machining starting signal to the machining equipment at the time t1, and the machining equipment starts to operate at the time t2 after the time period of the starting delay time tau 1.
Meanwhile, the control signal sends a laser emission signal to the laser emission device at a time t1, and the laser emission device starts to operate to emit a laser beam at a time t5 after a delay time period τ 10 is τ 1- τ 3, wherein τ 3 is the laser initial delay time of the laser emission device.
The control center calculates the difference (tau 1-tau 3) between the starting delay time and the laser starting delay time,
and obtaining a first delay time (tau 10), sending a processing starting signal by the control center at the time of t1, delaying the first delay time (tau 10), and then sending a laser emission signal, thereby ensuring that the laser beam also starts to emit when the processing element reaches the initial processing position.
And the control signal sends a laser emission ending signal to the laser emission device, and after the laser emission ending delay time tau 4 period, the laser emission device stops working and ends light emission.
Before the control center sends the machining stopping signal at the time t3, the control center advances a laser ending delay time tau 4, namely, at the time t6 before the time t3 is not reached, the control center sends a laser emission ending signal to the laser emission device, and controls the laser emission device to stop emitting laser. Thereby stopping the irradiation of the laser beam when the processing element reaches the final point.
In the figure, the period τ 2 is a period in which the machining equipment continues to operate due to inertia after the control center transmits the machining termination signal.
Detailed description of the invention
The invention discloses a switching light editable laser processing system which comprises a laser emitting device, processing equipment, a monitoring module and a control center.
Before the processing equipment starts to process, the control center simultaneously sends a processing starting signal and a laser emission signal, and the monitoring module measures the duration time of laser emitted by the laser emission device at a processing starting point, namely the starting duration delay time; after the machining is finished, the control center simultaneously sends a machining stopping signal and a laser emission ending signal, and the duration of the laser after the final machining point is measured as the ending duration delay time.
Specifically, as shown in fig. 2, a control signal sent by the control center is shown as a signal line a in the figure, an operation timing sequence of the processing equipment is shown as a signal line B in the figure, and a trigger signal of the laser emitting device is shown as a signal line D in the figure; the operation timing sequence of the laser emitting device in the non-delay control state is shown as an E signal line in the figure.
The control center sends a machining starting signal and a laser emission signal at the same time at t1, and the monitoring module measures delay time.
And at the time t2 after the time period of the starting delay time tau 1, the processing equipment starts to operate.
As shown by a signal line E, when the delay control is not considered, the laser emitting device starts emitting the laser beam at time t7 after receiving the laser emission signal and after the delay of the laser emitting device, and the processing device starts operating at time t2 where the laser beam continues for a period of time τ 6 on the starting point of the processing element. After the processing is finished, the control center sends a processing stopping signal and a laser emission stopping signal at t3, and respectively measures the time delay period tau 2 for the processing equipment to end and the time delay tau 5 for the laser emission device to end.
In consideration of the delay time, the control center calculates a period τ 1 after the starting time point of the laser is the time t1, subtracts the duration period τ 6 of the laser on the starting point to obtain the time t5 when the laser emitting device starts emitting the laser, and after the duration period τ 7- τ 6, the laser beam is irradiated at the time t2, which is the starting point of the operation of the processing equipment. That is, at the time when the processing apparatus is operated, the laser beam irradiates the start point without generating the over irradiation.
The laser beam end emission time point is controlled to be the machining stop signal time t3 minus the end duration delay time τ 5, and then a control end laser emission signal is sent at the time t6, so that the laser beam end irradiation is realized at the time t 3. It is ensured that the laser beam ends irradiation at time t3 when the processing element reaches the processing end point.
The termination duration delay time is essentially the same as the laser termination delay time.
Finally, at each time of processing the element, the laser emission is controlled to be started at the time t5, and the laser emission is controlled to be stopped at the time t6, so that the processing sequence shown by the C signal line in fig. 1 is realized, namely, the laser irradiates the processing element at the time t2, the laser irradiates at the time t3, the laser beam irradiation is ensured when the operation of the processing equipment is started, and the laser irradiation is stopped when the control center stops processing.
The control center comprises a memory and a processor, the memory stores a computer program for laser processing, and the processor loads and executes the computer program to realize processing of the element.
Detailed description of the preferred embodiment
The switching light editable laser processing method measures or calculates the starting delay time tau 1 of laser at the starting point of processing equipment and the delay time tau 3 of laser emission, delays one starting delay time (tau 1-tau 3) after the sending time of a processing signal is started, and controls the laser emission, so that the synchronization of the starting operation of the processing equipment and the laser irradiation is realized at the time t 2.
Measuring or calculating the ending delay time tau 4 of the laser after the final processing point, and advancing the ending delay time tau 4 before the time t3 before the processing signal is stopped, namely stopping laser emission at the time t6, so that the laser irradiation end is realized at the time t3 when the processing is stopped.
The delay time of the present application is explained with a positive delay time, and similarly, the present application is also applicable to a negative delay time in some cases.
The runtime of the processing tool, in some cases, the relative runtime of the laser and the tool, is not merely indicative of the runtime of the processing tool.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (6)
1. A switched light editable laser processing system, characterized by: the laser processing device comprises a laser emitting device, processing equipment, a monitoring module and a control center, wherein the processing equipment is used for processing an element by adopting laser, the monitoring module is used for measuring delay time and laser delay time of the processing equipment, and the control center controls a time point of emitting laser or finishing light emission of the laser emitting device according to the delay time so as to ensure that the laser is processed uniformly at a starting point and an end point of element processing;
the delay time comprises processing equipment delay time and laser delay time, wherein,
the delay time of the processing equipment comprises starting delay time which is used for recording a time interval from the moment that the control center sends a processing starting signal to the processing equipment to the moment that the processing equipment starts to run;
the laser delay time comprises laser initial delay time and laser ending delay time, and the laser initial delay time refers to a time interval from the beginning of sending a laser emission signal by the control center to the moment when the laser emission device starts emitting laser beams; the laser end delay time is the time interval from the time when the control center sends a laser emission end signal to the time when the laser emission device stops working and finishes emitting light; before the processing equipment starts to process, the control center simultaneously sends a processing starting signal and a laser emission signal, and the monitoring module measures the duration time of laser emitted by the laser emission device at a processing starting point, namely the starting duration delay time; after the processing is finished, the control center simultaneously sends a processing stopping signal and a laser emission finishing signal, and the duration of the laser after the final processing point is measured as the ending duration delay time;
and the control center advances a laser ending delay time before sending the machining stopping signal, sends a laser emission ending signal to the laser emission device and controls the laser emission device to stop emitting laser.
2. The switched light editable laser processing system according to claim 1, wherein: the control center calculates the difference between the starting delay time and the laser initial delay time to obtain a first delay time, and after the control center sends a processing starting signal and delays the first delay time, the control center sends a laser emission signal, so that when the processing element reaches an initial processing position, a laser beam also starts to be emitted.
3. The switched light editable laser processing system according to claim 1, wherein: and the control center calculates the laser emission time as the time of starting to process the signal, and then starts the time delay minus the starting duration delay time.
4. The switched light editable laser processing system according to claim 3, wherein: the control center calculates the laser emission stopping time as the time of subtracting the stopping duration delay time from the machining stopping signal time.
5. The switched light editable laser processing system according to claim 1, wherein: the control center comprises a memory and a processor, said memory storing a computer program that can be loaded and executed by the processor for performing the processing according to the system of any one of claims 1-4.
6. A switching light editable laser processing method is characterized in that: measuring or calculating the starting delay time of the laser at the processing starting point by adopting the switching light editable laser processing system of any one of claims 1 to 5, delaying one starting delay time after the starting processing signal sending moment, and starting to emit the laser;
and measuring or calculating the end delay time of the laser at the final processing point, and before the processing signal is stopped, advancing the end delay time and stopping laser emission.
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| CN100383659C (en) * | 2003-07-16 | 2008-04-23 | 中国科学院光电技术研究所 | Synchronous sequential control method for rotating disk type mechanical shutter and application thereof |
| JP2007207314A (en) * | 2006-01-31 | 2007-08-16 | Toshiba Microelectronics Corp | Recording laser beam controller |
| JP5324487B2 (en) * | 2010-01-21 | 2013-10-23 | 三井造船株式会社 | Calibration apparatus for fluorescence detection, calibration method for fluorescence detection, and fluorescence detection apparatus |
| CN102231472A (en) * | 2011-04-18 | 2011-11-02 | 电子科技大学 | Laser pulse synchronization control device |
| JP2013022614A (en) * | 2011-07-20 | 2013-02-04 | Disco Corp | Laser beam machining apparatus |
| CN102636464A (en) * | 2012-04-12 | 2012-08-15 | 淮海工学院 | Femtosecond laser film micro-nanomachining real-time monitoring device |
| JP2015153917A (en) * | 2014-02-17 | 2015-08-24 | 住友重機械工業株式会社 | Laser processing device |
| CN108318020B (en) * | 2017-12-15 | 2021-12-03 | 中国航空工业集团公司西安飞行自动控制研究所 | Resonant mode fiber optic gyroscope resonant frequency tracking system based on pseudorandom signal |
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